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 10357, 11120, 11561, 12723, 13550, 13889, 13951, 14142, 14176, 14200,
13 14317, 14327, 14496, 14812, 14920, 14964, 14981, 14982, 14985, 14994,
14 14996, 15003, 15006, 15020, 15023, 15036, 15054, 15055, 15062, 15078,
15 15160, 15214, 15232, 15234, 15283, 15285, 15287, 15304, 15307.
17 * Add support for calling C++11 thread_local object destructors on thread
18 and program exit. This needs compiler support for offloading C++11
19 destructor calls to glibc.
21 * Improved worst case performance of libm functions with double inputs and
24 * Support for priority inherited mutexes in pthread condition variables on
25 non-x86 architectures.
27 * Added a benchmark framework to track performance of functions in glibc.
29 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
30 It is based on draft TS 18661 and currently enabled as a GNU extension.
34 * The following bugs are resolved with this release:
36 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
37 9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
38 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
39 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
40 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
41 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298, 14303,
42 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417,
43 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519,
44 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576,
45 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648,
46 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743,
47 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805,
48 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835,
49 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872, 14879,
50 14889, 14893, 14898, 14914.
52 * Optimization of memcpy for MIPS.
54 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
55 EMFILE has been fixed (Bugzilla #14889).
57 * The add-on ports collection is now distributed in the "ports" subdirectory
58 of the main GNU C Library distribution, rather than separately.
60 * Port to ARM AArch64 contributed by Linaro.
62 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
63 Optimized versions of memcpy, memset, and memcmp added for System z10 and
65 Implemented by Andreas Krebbel.
67 * The new function secure_getenv allows secure access to the environment,
68 returning NULL if running in a SUID/SGID process. This function replaces
69 the internal function __secure_getenv.
71 * SystemTap static probes have been added into the dynamic linker.
72 Implemented by Gary Benson.
74 * Optimizations of string functions strstr, strcasestr and memmem.
75 Implemented by Maxim Kuvyrkov.
77 * The minimum Linux kernel version that this version of the GNU C Library
78 can be used with is 2.6.16.
80 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
81 powerpc POWER7. Implemented by Will Schmidt.
83 * New configure option --disable-nscd builds the C library such that it
84 never attempts to contact the Name Service Caching Daemon (nscd).
85 New configure option --disable-build-nscd avoids building nscd itself;
86 this is the default if --disable-nscd is used.
88 * Improved support for cross-compilation, including cross-testing and
89 bootstrap builds without a previously built glibc.
91 * Several testsuite tests are now able to test multiple IFUNC variants of an
92 interface, rather than just testing the one that would be chooen by
95 * New configure options --with-bugurl and --with-pkgversion, for
96 distributors to use to embed their bug-reporting and package version
97 information in --help and --version output.
99 * The ttyname and ttyname_r functions on Linux now fall back to searching for
100 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
101 allows creation of chroots without the procfs mounted on /proc.
103 * The `crypt' function now fails if passed salt bytes that violate the
104 specification for those values. On Linux, the `crypt' function will
105 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
106 enabled, and fail on encrypted strings using the MD5 or DES algorithm
107 when the mode is enabled.
109 * The `clock_*' suite of functions (declared in <time.h>) is now available
110 directly in the main C library. Previously it was necessary to link with
111 -lrt to use these functions. This change has the effect that a
112 single-threaded program that uses a function such as `clock_gettime' (and
113 is not linked with -lrt) will no longer implicitly load the pthreads
114 library at runtime and so will not suffer the overheads associated with
115 multi-thread support in other code such as the C++ runtime library.
117 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
122 * The following bugs are resolved with this release:
124 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
125 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
126 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
127 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
128 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
129 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
130 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
131 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
132 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
133 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
134 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
135 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
136 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
137 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
138 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
139 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
140 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
141 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
142 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
143 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
144 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
145 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
148 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
149 configuring glibc with:
150 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
151 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
152 Implemented by H.J. Lu.
156 + define static_assert
158 + do not declare gets
160 + declare at_quick_exit and quick_exit also for ISO C11
162 + aligned_alloc. NB: The code is deliberately allows the size parameter
163 to not be a multiple of the alignment. This is a moronic requirement
164 in the standard but it is only a requirement on the caller, not the
169 + uchar.h support added
171 + CMPLX, CMPLXF, CMPLXL added
173 Implemented by Ulrich Drepper.
175 * Support for the IA-64 has been moved to ports.
177 * Remove support for anything but ELF binary format
179 * Checking versions of poll, ppoll added.
180 Implemented by Ulrich Drepper.
182 * More generic and 64-bit performance optimizations to math functions.
183 Implemented by Ulrich Drepper.
185 * New configure option --enable-obsolete-rpc makes the deprecated RPC
186 headers and functions available at compile time as they were before
187 version 2.14. This option will be removed at some time in the future
188 after the TI-RPC library becomes fully sufficient for the needs of
189 existing applications.
191 * Compatibility code for Linux kernel versions before 2.4 has been removed.
192 Note that glibc is not expected to work with any Linux kernel version
195 * New header <sys/auxv.h> and function getauxval allowing easy access to
196 the AT_* key-value pairs passed from the Linux kernel. The header also
197 defines the HWCAP_* bits associated with the AT_HWCAP key.
199 * New locales: mag_IN
201 * New configure option --enable-systemtap builds SystemTap static probes
202 into libc for setjmp and longjmp and into libpthread for various operations.
203 So far the setjmp/longjmp probes and some of the libpthread probes are
204 provided only for i*86 and x86_64.
205 Implemented by Roland McGrath and Rayson Ho.
207 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
209 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
212 * More optimized functions for SPARC. Implemented by David S. Miller.
214 * Improved support for cross-compilation, especially bootstrap builds
215 without a previously built glibc.
217 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
218 Chris Metcalf from Tilera.
220 * Support for the old ARM ABI has been removed from ports. Only the EABI is
221 now supported for ARM processors.
223 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
224 as the name of the dynamic linker, to distinguish it from the
225 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
227 * Support for CRIS has been removed from ports.
229 * A new class of installed header has been documented for low-level
230 platform-specific functionality. PowerPC added the first instance with a
231 function to provide time base register access. Contributed by Tulio
232 Magno Quites Machado Filho.
234 * ix86 configurations now install header files that are consistent with
235 what x86-64 configurations install. These same header files can be used
236 for -m32, -m64, or -mx32 builds.
237 Contributed by H.J. Lu.
239 * Math library bug fixes. A thorough audit of all open math library bugs was
240 conducted by Joseph Myers. Significant progress was made on many math
241 library bugs resulting in more accurate exceptions and function results.
242 Many thanks to all those that contributed including Andreas Jaeger for his
243 patch review and work on the x87 trigonometric instruction issues.
245 * Timezone data is no longer installed. Timezone-related binaries and scripts
246 will continue to be installed. Users should obtain their timezone data from
247 their distribution provider or from the tzdata package at
248 <ftp://munnari.oz.au/pub/>.
252 * The following bugs are resolved with this release:
254 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
255 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
256 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
257 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
258 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
259 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
260 13484, 13506, 13515, 13523, 13524, 13538, 13540
262 * New program pldd to list loaded object of a process
263 Implemented by Ulrich Drepper.
265 * Add nss_db support back to glibc. No more dependency on Berkeley db
266 and support for initgroups lookups.
267 Implemented by Ulrich Drepper.
269 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
270 Contributed by HJ Lu.
272 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
273 Contributed by HJ Lu.
275 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
276 on x86-32 and x86-64.
277 Contributed by Liubov Dmitrieva.
279 * Optimized strchr and strrchr for SSE on x86-32.
280 Contributed by Liubov Dmitrieva.
282 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
283 for x86-64 and x86-32.
284 Contributed by Liubov Dmitrieva.
286 * New interfaces: scandirat, scandirat64
287 Implemented by Ulrich Drepper.
289 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
290 Implemented by Ulrich Drepper.
292 * nscd now also caches the netgroup database.
293 Implemented by Ulrich Drepper.
295 * Integrate libm with gcc's -ffinite-math-only option.
296 Implemented by Ulrich Drepper.
298 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
299 to math functions. Implemented by Ulrich Drepper.
301 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
302 Implemented by Ulrich Drepper.
304 * New Linux interfaces: process_vm_readv, process_vm_writev
306 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
307 Implemented by Ulrich Drepper.
309 * Optimized nearbyint and strcasecmp for PPC.
310 Implemented by Adhemerval Zanella.
312 * New locales: bho_IN, unm_US, es_CU, ta_LK
316 * The following bugs are resolved with this release:
318 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
319 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
320 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
321 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
322 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
323 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
324 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
325 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
326 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
327 12795, 12811, 12813, 12814, 12841
329 * The RPC implementation in libc is obsoleted. Old programs keep working
330 but new programs cannot be linked with the routines in libc anymore.
331 Programs in need of RPC functionality must be linked against TI-RPC.
332 The TI-RPC implementation is IPv6 enabled and there are other benefits.
334 Visible changes of this change include (obviously) the inability to link
335 programs using RPC functions without referencing the TI-RPC library and the
336 removal of the RPC headers from the glibc headers.
337 Implemented by Ulrich Drepper.
339 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
340 syncfs, setns, sendmmsg
342 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
343 yue_HK, lij_IT, mhr_RU
345 * New encodings: CP770, CP771, CP772, CP773, CP774
347 * New program sotruss to trace calls through PLTs
348 Implemented by Ulrich Drepper.
350 * The malloc hook implementation is marked deprecated and will be removed
351 from the default implementation in the next version. The design never
352 worked ever since the introduction of threads. Even programs which do
353 not create threads themselves can use multiple threads created internally.
357 * The following bugs are resolved with this release:
359 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
360 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
361 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
362 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
365 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
367 * POWER7 optimizations: memset, memcmp, strncmp
369 * New optimized string functions for x86-64: strnlen (SSE2),
370 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
371 Implemented by Ulrich Drepper.
375 * The following bugs are resolved with this release:
377 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
378 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
379 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
380 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
381 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
382 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
383 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
384 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
386 * New interfaces: pthread_getname_np, pthread_setname_np
388 * New Linux interface: recvmmsg
390 * STT_GNU_IFUNC implemented for Sparc by David Miller.
392 * The dynamic linker now recognizes supported ABI versions from the
393 EI_ABIVERSION field in the ELF header.
394 Implemented by Ulrich Drepper.
396 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
397 will not be used to fill in password fields in the passwd.byname replies.
398 Instead it is used to synthesize the shadow.byname table, should it be
399 missing. This is a useful mode in some installations involving Solaris.
400 Implemented by Ulrich Drepper.
402 * New locales: kok_IN, sq_MK, cv_RU
406 * The following bugs are resolved with this release:
408 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
409 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
410 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
411 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
412 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
413 10789, 10817, 10823, 10840, 10847
415 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
417 Implemented by Ulrich Drepper.
419 * Checking version of longjmp added that fails if an uninitialized stack
420 frame would be created. Implemented by Ulrich Drepper.
422 * STT_GNU_IFUNC is now supported in static executables.
423 Implemented by H.J. Lu.
425 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
427 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
428 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
429 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
430 Contributed by H.J. Lu.
432 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
433 Implemented by Ulrich Drepper.
435 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
437 Contributed by H.J. Lu.
439 * Support for fma instruction in AVX on x86-64.
440 Implemented by H.J. Lu and Ulrich Drepper.
442 * AVX support in x86-64 auditing support in ld.so.
443 Implemented by H.J. Lu.
445 * STB_GNU_UNIQUE support added.
446 Implemented by Ulrich Drepper.
448 * Implement second fallback mode for optimized DNS lookup for even more
449 broken environments. If two requests from the same port are not
450 handled correctly close the socket and open a new one before sending
451 the second request. The 'single-request-reopen' option in /etc/resolv.conf
452 can be used to select this mode right away, instead of rediscovering the
453 necessity is every process again.
454 Implemented by Ulrich Drepper.
456 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
457 Implemented by Adam Tkac.
459 * Optimized iconv conversions for S390x.
460 Implemented by Andreas Krebbel.
462 * Using condvars with PI mutexes is now more efficient due to kernel
463 support for requeueing to PI futexes. NPTL support added for x86-64.
464 Implemented by Ulrich Drepper.
466 * New locales: ps_AF, my_MM
470 * The following bugs are resolved with this release:
472 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
473 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
474 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
475 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
476 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
478 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
479 Implemented by Ulrich Drepper.
481 * New Linux interfaces: accept4, fallocate, fallocate64.
482 Implemented by Ulrich Drepper.
484 * Correct declarations of string function when used in C++ code. This
485 could lead to compile errors for invalid C++ code.
487 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
490 * New POSIX 2008 interface: psiginfo
491 Implemented by Ulrich Drepper.
493 * New ISO C++1x interfaces: quick_exit, at_quick_exit
494 Implemented by Ulrich Drepper.
496 * Support for selecting between multiple function definitions at runtime
497 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
499 * The libcrypt library can now use the hash function implementations in
500 NSS. Implemented by Ulrich Drepper.
502 * The malloc implementation can be compiled to be less memory efficient
503 but higher performing in multi-threaded programs.
504 Implemented by Ulrich Drepper.
506 * New locales: nan_TW@latin, ks_IN
508 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
509 Implemented by Ulrich Drepper.
511 * Extended printf hook support. It is possible to use user-defined types
512 and extend existing format specifiers.
513 Implemented by Ulrich Drepper.
515 * Handling for group shadow files has been added.
516 Implemented by Ulrich Drepper.
518 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
519 servers (the case, e.g., for some people using the built-in DNS
520 server in ADSL modems/routers). There is a once-per-process timeout
521 in case of a broken server. To avoid it, users can run nscd or put
522 'options single-request' in /etc/resolv.conf.
523 Implemented by Ulrich Drepper.
527 * The following bugs are resolved with this release:
529 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
530 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
531 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
532 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
533 6968, 6974, 6980, 6995, 7008, 7009, 7029
535 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
536 up at the same time. Implemented by Ulrich Drepper.
538 * TLS descriptors for LD and GD on x86 and x86-64.
539 Implemented by Alexandre Oliva.
541 * getaddrinfo now handles DCCP and UDPlite.
542 Implemented by Ulrich Drepper.
544 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
545 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
546 Implemented by Ulrich Drepper.
548 * New implementation of memmem, strstr, and strcasestr which is O(n).
549 Implemented by Eric Blake.
551 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
553 * Implement "e" option for popen to open file descriptor with the
554 close-on-exec flag set. Implemented by Ulrich Drepper.
556 * Implement "b" mode for fmemopen. In this mode writes writes don't
557 implicitly add a NUL byte and seeks from the end of the buffer really
558 use the buffer end, not the string length as the basis.
559 Implemented by Ulrich Drepper.
561 * Many functions, exported and internal, now atomically set the close-on-exec
562 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
564 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
566 Implemented by Pravin Satpute.
568 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
572 * The following bugs are resolved with this release:
574 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
575 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
576 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
577 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
578 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
579 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
580 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
582 * New locales: bo_CN, bo_IN, shs_CA.
584 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
586 * Sorting rules for some Indian languages (Devanagari and Gujarati).
587 Implemented by Pravin Satpute.
589 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
591 * nscd caches now all timeouts for DNS entries
592 Implemented by Ulrich Drepper.
594 * nscd is more efficient and wakes up less often.
595 Implemented by Ulrich Drepper.
597 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
598 vdprintf, and obstack_vprintf.
599 Implemented by Jakub Jelinek.
601 * Faster memset for x86-64.
602 Implemented by Harsha Jagasia and H.J. Lu.
604 * Faster memcpy on x86.
605 Implemented by Ulrich Drepper.
607 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
608 Implemented by Ulrich Drepper.
610 * Faster sqrt and sqrtf implemention for some PPC variants.
611 Implemented by Steven Munroe.
615 * The following bugs are resolved with this release:
617 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
618 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
619 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
620 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
621 5071, 5103, 5104, 5112, 5113, 5184, 5186
623 * More checking functions: fread, fread_unlocked, open*, mq_open.
624 Implemented by Jakub Jelinek and Ulrich Drepper.
626 * Extend fortification to C++. Implemented by Jakub Jelinek.
628 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
629 by not recognizing 'a' as a modifier when those specs are requested.
630 Implemented by Jakub Jelinek.
632 * PPC optimizations to math and string functions.
633 Implemented by Steven Munroe.
635 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
636 options to be passed. Implemented by Ulrich Drepper.
638 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
640 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
641 Implemented by Ulrich Drepper.
643 * Handle private futexes in the NPTL implementation.
644 Implemented by Jakub Jelinek and Ulrich Drepper.
646 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
647 Implemented by Roland McGrath and Ulrich Drepper.
649 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
651 * SHA-256 and SHA-512 based password encryption.
652 Implemented by Ulrich Drepper.
654 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
655 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
658 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
659 Implemented by Ulrich Drepper.
663 * The following bugs are resolved with this release:
665 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
666 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
667 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
668 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
669 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
670 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
671 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
674 * New Linux interfaces: epoll_pwait, sched_getcpu.
676 * New generic interfaces: strerror_l.
678 * nscd can now cache the services database. Implemented by Ulrich Drepper.
682 * The following bugs are resolved with this release:
684 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
685 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
686 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
687 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
688 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
689 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
690 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
691 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
692 3225, 3251, 3252, 3253, 3273
694 * For Linux, the sorting of addresses returned by getaddrinfo now also
695 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
696 Implemented by Ulrich Drepper.
698 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
699 Implemented by Ulrich Drepper.
701 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
703 * New iconv module for MIK. Contributed by Alexander Shopov.
705 * For sites with broken group and/or passwd database, the auto-propagate
706 option of nscd can prevent creating ID lookup entries from the results
707 of a name lookup and vice versa. This usually is no problem but some
708 site might have problems with the default behavior.
709 Implemented by Ulrich Drepper.
711 * Iterating over entire database in NIS can be slow. With the
712 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
713 to trade time for memory. The entire database will be read at once.
714 Implemented by Ulrich Drepper.
716 * The interfaces introduced in RFC 3542 have been implemented by
719 * Support for the new ELF hash table format was added by Ulrich Drepper.
721 * Support for priority inheritance mutexes added by Jakub Jelinek and
724 * Support for priority protected mutexes added by Jakub Jelinek.
726 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
727 or_IN, csb_PL, fy_NL, sr_ME.
731 * More overflow detection functions.
733 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
734 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
736 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
737 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
738 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
739 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
740 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
741 by Masahide Washizawa.
743 * It is now possible to install audit libraries for the dynamic linker using
744 LD_AUDIT. Implemented by Ulrich Drepper.
746 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
747 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
748 For a libc and libpthread that works well on Linux 2.4 kernels, we
749 recommend using the stable 2.3 branch.
751 * The new function open_wmemstream acts like open_memstream,
752 but uses a wchar_t wide character buffer.
754 * The new function ppoll is an improved version of poll, similar to pselect.
756 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
757 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
758 renameat, unlinkat, linkat, symlinkat, readlinkat.
760 * New Linux kernel system calls: unshare,
761 inotify_init, inotify_add_watch, inotify_rm_watch.
763 * The euidaccess function is now also known by the alias eaccess,
764 for compatibility with some other systems.
766 * Timezone data updated to 2006b version.
770 * The following bugs are resolved with this release:
772 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
773 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
774 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
775 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
776 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
777 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
779 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
781 * As of this release, GCC 4 can be used to compile the C Library.
783 * Timezone data updated to 2005m version.
787 * The following bugs are resolved with this release:
789 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
790 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
791 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
792 777, 787, 821, 822, 823, 825
794 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
798 * Support for RFC 3678. Real implementations exist only for Linux so far.
799 Implemented by Ulrich Drepper.
801 * nscd can now cache entries persistently. Expiring entries are reloaded.
802 For speedups the cache can be shared in memory with client processes.
803 Implemented by Ulrich Drepper.
805 * nscd can now perform SELinux checks.
806 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
808 * getaddrinfo queries are now cached. Canonical name lookup is performed
810 Implemented by Ulrich Drepper.
812 * The nothrow function attribute is used when headers are used by gcc when
813 compiling C code. This can avoid significant amounts of exception
816 * The malloc functions perform more error checking and are stricter when
817 it comes to reacting on errors. The default action is to terminate
818 the process after showing an error message. Implemented by Ulrich Drepper.
820 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
821 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
823 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
824 namespaces using the new function dlmopen(). This feature is of course,
825 like most other dynamic loading functionality, not available in statically
826 linked applications. Implemented by Ulrich Drepper.
828 * Low-overhead boundary checking variants of string and some stdio functions
829 were added. These are to be used in conjunction with a gcc patch by
830 Jakub Jelinek which adds calls to these functions if possible.
831 Implemented by Jakub Jelinek and Ulrich Drepper.
833 * Old code for several operating systems and machine architectures that
834 have not been in working condition in a long time have been removed from
835 the main source tree maintained by the GNU C Library's maintainers.
836 These files are now reside in the separate `ports' source module
837 that is usable as an add-on when building the library.
841 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
842 interrogate the dynamic linker, compatible with the Solaris interface.
844 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
845 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
847 * getifaddrs now uses the netlink interface on Linux to get its information.
848 Implemented by Thorsten Kukuk.
850 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
851 Implemented by Ulrich Drepper.
853 * support for non-executable stacks on x86 has been added. Changes mostly
856 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
859 * getaddrinfo now performs destination address selection according to
864 * Thread-safe interfaces for many functions that access locale data
865 were added in version 2.3, but these features were omitted from NEWS.
866 Many functions have variants with an `_l' suffix that take a `locale_t'
867 object as a parameter rather than consulting the current locale.
868 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
869 create and maintain `locale_t' objects. Additionally, the new function
870 `uselocale' sets "the current locale" (as used by functions not so
871 parameterized) set for an individual thread. These features were added
872 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
874 * The functions getresuid, getresgid, setresuid, and setresgid, which
875 have long been available on Linux, are now declared in <unistd.h>
876 and are now also available on the Hurd.
878 * ELF thread-local storage support (TLS) now works on x86-64.
880 * The new dynamic string token $LIB is expanded in shared library names.
881 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
883 * Aldy Hernandez contributed complete software floating point support for
884 PowerPC machines with no FPU.
886 * fexecve is implemented on Linux.
888 * The `btowc' function should work at least twice as fast due to
889 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
891 * With approriate thread add-ons cancelable functions are now implemented
892 in libc.so as well. No need to call the function in libpthread. This
893 change allowed to finally disable the incorrect and expensive handling
894 of weak definition in ld.so.
896 * Yet more PLT entries in libc.so have been removed. We finally arrived
897 at the bare minimum. Startup times improved appropriately.
899 * Support for the new Linux/x86 system call interface was added. The
900 AT_SYSINFO auxiliary vector entry is recognized and handled.
904 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
907 * iconv (the program and the interface) now accepts empty names (excluding
908 options like //TRANSLIT) to mean "use charset of current locale".
910 * localedef can now transliterate characters in strings which are not in
911 the provided charmap. The information from the input locale is used.
913 * Prelinking support was added for ELF targets. This requires additional
914 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
916 * Read-only stdio streams now use mmap to speed up operation by eliminating
917 copying and buffer underflows. To use add 'm' to the mode string of
918 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
920 * The malloc functions were completely rewritten by Wolfram Gloger based
921 on Doug Lea's malloc-2.7.0.c.
923 * Isamu Hasegawa contributed a completely new and POSIX-conformant
924 implementation of regex.
926 * Bruno Haible upgraded the iconv and locale implementation to support
929 * Contents of the LC_* and LANG environment variables in the CEN style are
930 not recognized anymore. It never was used. Change by Ulrich Drepper.
932 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
933 thread-local storage (TLS) ABI on some platforms.
934 Changes by Ulrich Drepper. SH support by Kaz Kojima.
936 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
937 EUC-JISX0213, and TSCII.
939 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
940 BSD-compatible interface for getting all network interface addresses.
941 Implementation for IPv4 by Roland McGrath.
943 * Loading of locale data is faster due to the introduction of a locale
944 archive. Implemented by Roland McGrath and Ulrich Drepper.
946 * Startup times are significantly reduced by not using exported functions
947 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
950 * Steven Munroe contributed a port to PowerPC64/Linux.
954 * The Hurd now uses the GNU libio implementation of stdio rather than the
955 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
957 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
958 with the same behavior as the Linux system call of the same name.
962 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
963 128-bit long double format.
965 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
966 IBM1161, and IBM1162 charsets.
968 * Andreas Jaeger contributed a port to x86-64/Linux.
970 * Peter Bruin contributed a port to PowerPC/Hurd.
972 * libc functions using I/O streams now can handle wide-oriented streams
975 * optimizations in the dynamic linker. Binaries created by recent binutils
976 versions start up quicker due to reduced time spent on relocations.
978 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
982 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
983 asinh, atanh, j0 for the 128-bit long double format.
985 * Bruno Haible updated all the code handling Unicode in some form to
988 * Speed of regex for single-byte locales is back to previous levels.
989 Patch by Isamu Hasegawa.
991 * Alpha, SPARC, and IA-64 now also using floating stacks.
993 * Startup time of internationalized applications greatly improved through
994 iconv cache. Use iconvconfig to generate the cache file.
995 Contributed by Ulrich Drepper.
997 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
998 severe performance problems. Patch by David Mosberger.
1000 * The Hurd port got a lot more functionality like AIO, various stdio
1001 extensions, etc. Mainly done by Roland McGrath.
1003 * mtrace can now lookup symbols in shared libraries.
1007 * Intel's IA-64 math library is largely integrated. It provides fast and
1008 accurate implementatations for most basic and standard math functions
1009 in float, double, and long double format.
1011 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1012 and asin for the 96-bit long double format and asin, log, tan for the
1013 128-bit long double format.
1015 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1016 The basic double functions exist today. Contributed by Abraham Ziv
1017 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1018 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1020 * An asynchronous name lookup library was added. The interface is designed
1021 after POSIX AIO. The proposal was circulated beforehand to get comments.
1022 No negative ones came in. Implemented by Ulrich Drepper.
1024 * Port to S390/64bit contributed by Martin Schwidefsky
1025 <schwidefsky@de.ibm.com>.
1027 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1028 of functions for Linux/IA-64.
1030 * The RPC code is now thread safe. Threads can now use the same service
1031 of different services at the same time. Patch by Eric Norum
1032 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1034 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1035 family of functions for Linux/S390.
1037 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1038 of functions for Linux/x86.
1040 * Port to Linux/CRIS contributed by Axis Communications.
1044 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1045 we can now check for namespace violations and missing declarations. The
1046 result is that almost all headers are now Unix-compliant (as defined in
1047 the upcoming XPG6). The negative side is that some programs might need
1048 corrections, too, if they depend on the incorrect form of the headers in
1049 previous versions which defined too many symbols and included too many
1052 * regex now handles multibyte character sets correctly.
1053 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1055 * iconv (the program) does now conform to the upcoming XPG6 and handles
1056 charmaps. Instead of the charset names the path of charmaps can be
1057 provided and the conversion happens based on this data.
1058 Contributed by Ulrich Drepper.
1060 * The locale program now provides detailed information about the installed
1065 only lists the names of the supported locales
1069 provides details such as country, language, and codeset name.
1070 Contributed by Ulrich Drepper.
1074 * The gencat program now parses the input file according to the charset
1075 selected by the LC_CTYPE category. This is important for stateful
1076 character sets. To make generating catalogs easier there is a way
1077 to overwrite the charset selected by the locale: before the first
1078 message or $ quote line the catalog can contain a line like
1080 $ codeset=ISO-8859-2
1082 to select the charset (ISO-8859-2 in this case).
1084 Implemented by Shinya Hanataka and Ulrich Drepper.
1086 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1087 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1088 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1090 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1091 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1093 * The LANGUAGE environment variable is now ignored unless the locale is
1094 changed from the default "C" locale.
1096 * The usual bug fixes.
1100 * Greg McGary added runtime support for bounds checking using gcc's
1101 new -fbounded-pointers option. ix86 target is complete. PowerPC
1104 * Thorsten Kukuk added secure mode support to nscd.
1106 * The Berkeley db libraries have been removed.
1108 Related, the nss_db module is now in a separate package since it
1109 obviously requires a database library being available.
1111 * Wide character I/O streams implemented by Ulrich Drepper.
1113 * Functions from the extended socket API added by Ulrich Drepper.
1115 * Functions feenableexcept and fedisableexcept to control the
1116 behaviour of individual exceptions have been added by Andreas Jaeger.
1118 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1120 * The resolver code has been updated from bind 8.2.3-T5B which supports
1121 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1124 This change could in some situations effect backward compatibility. Since
1125 now `_res' is a thread-local instead of a global variable, modifying it
1126 in one thread does not have any effect in other threads.
1128 The resolver library was also extended to allow IPv6 as the transport
1129 protocol for the requests. This work was done by Stig Venaas.
1131 * Compatibility code for K&R C compilers has been removed from the
1132 header files. A ISO C compiler is needed to use the library
1133 (conforming to either C89 or C99 standard).
1135 * Complete rewrite of the localedef program to support multibyte character
1136 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1137 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1138 Implemented by Ulrich Drepper.
1140 Bruno Haible significantly improved the generation and use of the data
1141 structures for the wide character tables.
1143 * Plural handling in gettext implemented by Ulrich Drepper.
1145 * The utmp daemon has been removed.
1147 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1149 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1152 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1154 * POSIX barriers implemented by Kaz Kylheku.
1156 * POSIX spawn function family implemented by Ulrich Drepper.
1158 * POSIX spinlocks are now available.
1160 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1162 * the configure option --enable-kernel=X.Y.Z allows to strip out
1163 compatibility for kernel versions before X.Y.Z. This is currently only
1164 implemented for Linux.
1166 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1167 field sin6_scope_id. This means that all programs using IPv6 should be
1168 recompiled. Don't expect binary compatibility with previous glibc
1171 * various conversion modules for IBM character sets contributed by
1174 * IA-64 port by Jes Sorensen and HJ Lu.
1188 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1190 * New xdr functions are added; some rpc functions are now 64bit clean.
1192 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1194 * Fixed known incompatibilities with glibc 2.0.
1196 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1198 * Optimized a number of functions (especially the ELF dynamic loader).
1200 * Update timezone data files.
1202 * lots of charmaps corrections
1204 * some new locale definitions and charmaps
1209 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1210 conform to POSIX member type requirements. Symbol versions have been
1211 adjusted as needed within the library, and for direct use by applications,
1212 but there is potential for problems if third-party libraries use
1213 struct timeval as part of their interface. This does not present
1214 a problem for X and other "essential" system libraries.
1216 * An additional locale model to support C++ Standard Library locale
1217 model and probably more was implemented by Ulrich Drepper.
1219 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1222 * Miles Bader provided the `argp' function family to support hierachical
1223 command line argument parsing, layered on top of getopt.
1225 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1227 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1230 * scanf recognizes the %a and %A format for scanning floating point numbers.
1232 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1233 information and interfaces for the available integer types.
1235 * about 130 new math functions were added to implement the ISO C9x math
1238 * the new header <complex.h> contains definitions of the complex math
1239 functions from ISO C 9X.
1241 * the new header <tgmath.h> defines generic macros to use complex or
1242 real valued functions.
1244 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1246 * Andreas Jaeger provided a test suite for the math library.
1248 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1250 * Ulrich Drepper added character set conversion functions (iconv).
1252 * Optimized string functions have been added.
1254 * The localedata addon is now part of glibc.
1256 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1258 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1259 daemon for NSS (nscd).
1261 Missing a better place here are some numbers on improvements. Under
1262 Linux 2.1.125 un-tar-ing the kernel sources takes
1266 using local files 12.19s 6.88s 22.91s
1268 using NIS 13.92s 8.91s 26.34s
1270 using NIS & nscd 10.37s 7.34s 25.30s
1272 using NIS+ 27.57s 30.37s 640.46s
1274 using NIS+ & nscd 10.25s 7.83s 26.51s
1276 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1278 Keep in mind that non-namelookup related operations dominate above times.
1279 It was just a common complain that using NIS+ unpacking the kernel is
1282 [1] The old nscd implementation is not available anymore since it was
1283 distributed with glibc up to version 2.0.98 and thus is now replaced.
1285 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1287 * Mark Kettenis provided a Hesiod NSS module.
1289 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1290 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1292 * rcmd can now handle netgroups (Dick Streefland).
1294 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1297 * Support for the IPv6 protocol has been added to the socket API, as per the
1298 latest draft standards.
1300 * Support for Linux 2.2 has been added.
1302 * Interface changes relative to the latest 2.0.x release:
1303 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1304 addseverity NEW: Unix98
1305 alphasort64 NEW: LFS
1306 argp_err_exit_status NEW: argp, GNU ext
1307 argp_error NEW: argp, GNU ext
1308 argp_failure NEW: argp, GNU ext
1309 argp_help NEW: argp, GNU ext
1310 argp_parse NEW: argp, GNU ext
1311 argp_program_bug_address NEW: argp, GNU ext
1312 argp_program_version NEW: argp, GNU ext
1313 argp_program_version_hook NEW: argp, GNU ext
1314 argp_state_help NEW: argp, GNU ext
1315 argp_usage NEW: argp, GNU ext
1316 authdes_create NEW: Secure RPC
1317 authdes_getucred NEW: Secure RPC
1318 authdes_pk_create NEW: Secure RPC
1319 backtrace NEW: GNU ext.
1320 backtrace_symbols NEW: GNU ext.
1321 backtrace_symbols_fd NEW: GNU ext.
1323 cacosf NEW: ISO C 9x
1324 cacosh NEW: ISO C 9x
1325 cacoshf NEW: ISO C 9x
1326 cacoshl NEW: ISO C 9x
1327 cacosl NEW: ISO C 9x
1334 casinf NEW: ISO C 9x
1335 casinh NEW: ISO C 9x
1336 casinhf NEW: ISO C 9x
1337 casinhl NEW: ISO C 9x
1338 casinl NEW: ISO C 9x
1340 catanf NEW: ISO C 9x
1341 catanh NEW: ISO C 9x
1342 catanhf NEW: ISO C 9x
1343 catanhl NEW: ISO C 9x
1344 catanl NEW: ISO C 9x
1345 cbc_crypt NEW: Secure RPC
1349 ccoshf NEW: ISO C 9x
1350 ccoshl NEW: ISO C 9x
1356 cimagf NEW: ISO C 9x
1357 cimagl NEW: ISO C 9x
1358 clearerr_locked REMOVED
1359 clntunix_create NEW: sunrpc ext
1361 clog10 NEW: ISO C 9x
1362 clog10f NEW: ISO C 9x
1363 clog10l NEW: ISO C 9x
1373 cprojf NEW: ISO C 9x
1374 cprojl NEW: ISO C 9x
1376 crealf NEW: ISO C 9x
1377 creall NEW: ISO C 9x
1382 csinhf NEW: ISO C 9x
1383 csinhl NEW: ISO C 9x
1386 csqrtf NEW: ISO C 9x
1387 csqrtl NEW: ISO C 9x
1391 ctanhf NEW: ISO C 9x
1392 ctanhl NEW: ISO C 9x
1394 des_setparity NEW: Secure RPC
1395 ecb_crypt NEW: Secure RPC
1396 endutxent NEW: Unix98
1398 exp10f NEW: ISO C 9x
1399 exp10l NEW: ISO C 9x
1403 fattach NEW: STREAMS
1404 fdetach NEW: STREAMS
1408 feclearexcept NEW: ISO C 9x
1409 fegetenv NEW: ISO C 9x
1410 fegetexceptflag NEW: ISO C 9x
1411 fegetround NEW: ISO C 9x
1412 feholdexcept NEW: ISO C 9x
1414 feraiseexcept NEW: ISO C 9x
1415 ferror_locked REMOVED
1416 fesetenv NEW: ISO C 9x
1417 fesetexceptflag NEW: ISO C 9x
1418 fesetround NEW: ISO C 9x
1419 fetestexcept NEW: ISO C 9x
1420 feupdateenv NEW: ISO C 9x
1421 fflush_locked REMOVED
1425 fgets_unlocked NEW: GNU ext.
1426 fileno_locked REMOVED
1438 fputc_locked REMOVED
1439 fputs_unlocked NEW: GNU ext.
1440 fread_unlocked NEW: GNU ext.
1445 fstatvfs NEW: Unix98
1449 ftruncate64 NEW: LFS
1451 fwrite_unlocked NEW: GNU ext.
1452 gai_strerror NEW: IPv6
1456 getchar_locked REMOVED
1458 getdate_err NEW: Unix98
1459 getdate_r NEW: GNU ext.
1461 getnameinfo NEW: IPv6
1462 getnetname NEW: Secure RPC
1463 getpmsg NEW: STREAMS
1464 getpt NEW: Unix98 PTY
1465 getrlimit64 NEW: LFS
1466 getutxent NEW: Unix98
1467 getutxid NEW: Unix98
1468 getutxline NEW: Unix98
1469 glob64 NEW: GNU ext.
1470 globfree64 NEW: GNU ext.
1471 gnu_get_libc_release NEW: GNU ext.
1472 gnu_get_libc_version NEW: GNU ext.
1473 grantpt NEW: Unix98 PTY
1474 host2netname NEW: Secure RPC
1476 iconv_close NEW: iconv
1477 iconv_open NEW: iconv
1478 if_freenameindex NEW: IPv6
1479 if_indextoname NEW: IPv6
1480 if_nameindex NEW: IPv6
1481 if_nametoindex NEW: IPv6
1482 in6addr_any NEW: IPv6
1483 in6addr_loopback NEW: IPv6
1484 inet6_isipv4mapped NEW: IPv6
1485 isastream NEW: STREAMS
1486 iswblank NEW: GNU ext.
1487 key_decryptsession NEW: Secure RPC
1488 key_decryptsession_pk NEW: Secure RPC
1489 key_encryptsession NEW: Secure RPC
1490 key_encryptsession_pk NEW: Secure RPC
1491 key_gendes NEW: Secure RPC
1492 key_get_conv NEW: Secure RPC
1493 key_secretkey_is_set NEW: Secure RPC
1494 key_setnet NEW: Secure RPC
1495 key_setsecret NEW: Secure RPC
1496 llrint NEW: ISO C 9x
1497 llrintf NEW: ISO C 9x
1498 llrintl NEW: ISO C 9x
1499 llround NEW: ISO C 9x
1500 llroundf NEW: ISO C 9x
1501 llroundl NEW: ISO C 9x
1506 lrintf NEW: ISO C 9x
1507 lrintl NEW: ISO C 9x
1508 lround NEW: ISO C 9x
1509 lroundf NEW: ISO C 9x
1510 lroundl NEW: ISO C 9x
1512 makecontext NEW: Unix98
1513 mempcpy NEW: GNU ext.
1516 modify_ldt NEW: kernel
1520 nearbyint NEW: ISO C 9x
1521 nearbyintf NEW: ISO C 9x
1522 nearbyintl NEW: ISO C 9x
1523 netname2host NEW: Secure RPC
1524 netname2user NEW: Secure RPC
1525 nexttoward NEW: ISO C 9x
1526 nexttowardf NEW: ISO C 9x
1527 nexttowardl NEW: ISO C 9x
1531 passwd2des NEW: Secure RPC
1533 pow10f NEW: GNU ext.
1534 pow10l NEW: GNU ext.
1537 printf_size NEW: GNU ext.
1538 printf_size_info NEW: GNU ext.
1539 profil_counter REMOVED
1540 pthread_mutexattr_getkind_np REPLACED
1541 pthread_mutexattr_setkind_np REPLACED
1542 ptsname NEW: Unix98 PTY
1543 ptsname_r NEW: Unix98 PTY
1545 putchar_locked REMOVED
1546 putgrent NEW: GNU ext.
1548 putpmsg NEW: STREAMS
1549 pututxline NEW: Unix98
1553 readdir64_r NEW: LFS
1554 remquo NEW: ISO C 9x
1555 remquof NEW: ISO C 9x
1556 remquol NEW: ISO C 9x
1558 roundf NEW: ISO C 9x
1559 roundl NEW: ISO C 9x
1561 scalbln NEW: ISO C 9x
1562 scalblnf NEW: ISO C 9x
1563 scalblnl NEW: ISO C 9x
1565 sendfile NEW: kernel
1566 setcontext NEW: Unix98
1567 setrlimit64 NEW: LFS
1568 setutxent NEW: Unix98
1570 sigignore NEW: Unix98
1571 sigqueue NEW: POSIX.1b
1572 sigrelse NEW: Unix98
1573 sigset NEW: POSIX.1b
1574 sigtimedwait NEW: POSIX.1b
1575 sigwaitinfo NEW: POSIX.1b
1576 sincos NEW: GNU ext.
1577 sincosf NEW: GNU ext.
1578 sincosl NEW: GNU ext.
1582 strcasestr NEW: GNU ext.
1583 strtoimax NEW: ISO C 9x
1584 strtoumax NEW: ISO C 9x
1585 strverscmp NEW: GNU ext.
1586 svcauthdes_stats NEW: Secure RPC
1587 svcunix_create NEW: sunrpc etx
1588 svcunixfd_create NEW: sunrpc ext
1589 swapcontext NEW: Unix98
1590 tcgetsid NEW: Unix98 PTY
1591 tdestroy NEW: GNU ext.
1592 tgamma NEW: ISO C 9x
1593 tgammaf NEW: ISO C 9x
1594 tgammal NEW: ISO C 9x
1598 truncf NEW: ISO C 9x
1599 truncl NEW: ISO C 9x
1601 unlockpt NEW: Unix98 PTY
1602 updwtmpx NEW: Unix98
1603 user2netname NEW: Secure RPC
1604 utmpxname NEW: Unix98
1605 versionsort NEW: GNU ext.
1606 versionsort64 NEW: GNU ext.
1608 wcscasecmp NEW: GNU ext.
1609 wcsncasecmp NEW: GNU ext.
1610 wcsnlen NEW: GNU ext.
1611 wcstoimax NEW: ISO C 9x
1612 wcstoll NEW: ISO C 9x
1613 wcstoull NEW: ISO C 9x
1614 wcstoumax NEW: ISO C 9x
1616 wordexp NEW: POSIX.2
1617 wordfree NEW: POSIX.2
1618 write_profiling REMOVED
1619 xdecrypt NEW: Secure RPC
1620 xdr_authdes_cred NEW: Secure RPC
1621 xdr_authdes_verf NEW: Secure RPC
1622 xdr_cryptkeyarg NEW: Secure RPC
1623 xdr_cryptkeyarg2 NEW: Secure RPC
1624 xdr_cryptkeyres NEW: Secure RPC
1625 xdr_getcredres NEW: Secure RPC
1626 xdr_key_netstarg NEW: Secure RPC
1627 xdr_key_netstres NEW: Secure RPC
1628 xdr_keybuf NEW: Secure RPC
1629 xdr_keystatus NEW: Secure RPC
1630 xdr_netnamestr NEW: Secure RPC
1631 xdr_sizeof NEW: Secure RPC
1632 xdr_unixcred NEW: sunrpc ext
1633 xencrypt NEW: Secure RPC
1634 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1645 * inet_ntoa is thread-safe
1647 * updwtmp is moved from libutil to libc
1649 * rewrite of cbrt function
1651 * update of timezone data
1665 * add atoll function
1667 * fix complex problems in Berkeley DB code
1669 * fix math functions
1673 * fixed lots of header problems (especially Linux/GNU specific)
1675 * dynamic loader preserves all registers
1677 * Roland McGrath provided support for handling of auxiliary objects in
1678 the ELF dynamic loader.
1680 * support for parallel builds is improved
1684 * GNU extensions are no longer declared by default. To enable them you
1685 must define the macro `_GNU_SOURCE' in your program or compile with
1688 * The library has changed from using GNU ld symbol aliases to using weak
1689 symbols where available. The ELF object file format supports weak
1690 symbols; GNU ld also supports weak symbols in the a.out format. (There
1691 is also now support for other GNU ld extensions in ELF. Use the
1692 `--with-elf' option to configure to indicate you have ELF, and
1693 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1694 of many files which contained only symbol aliases, reducing the size of
1695 the source and the compiled library; many other files were renamed to
1696 less cryptic names previously occupied by the symbol alias files.
1697 There is a new header file <elf.h> for programs which operate on
1698 files in the ELF format.
1700 * Converted to Autoconf version 2, so `configure' has more options.
1701 Run `configure --help' to see the details.
1703 * The library can now be configured to build profiling, highly-optimized
1704 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1705 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1706 `configure' enable building these extra libraries. The shared library is
1707 built by default when using both ELF and GNU ld. When shared libraries
1708 are enabled, the new library `-ldl' is available for arbitrary run-time
1709 loading of shared objects; its interface is defined in <dlfcn.h>. The
1710 new header file <link.h> gives access to the internals of the run-time
1711 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1712 application of same name on other systems and it provides information
1713 about dynamically linked binaries.
1715 * The C library now provides the run-time support code for profiling
1716 executables compiled with `-pg'. Programs can control the profiling code
1717 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1718 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1719 the support for this file format was contributed by David Mosberger-Tang.
1721 * The math code has been replaced with a math library based on fdlibm from
1722 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1723 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1724 functions. The math functions now reside in a separate library, so
1725 programs using them will need to use `-lm' their linking commands.
1727 * John C. Bowman contributed optimized ix87 assembler inline functions.
1729 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1730 mechanism similar to that found in Solaris 2. This is now used for the
1731 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1732 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1733 file controls what services are used for each individual database. This
1734 works by loading shared libraries with names specified in `nsswitch.conf',
1735 so service modules can be changed or added at any time without even
1736 relinking any program. Currently there are the file, db, and NIS based
1737 NSS services available.
1739 * The new functions `strtoq' and `strtouq' parse integer values from
1740 strings, like `strtol' and `strtoul', but they return `long long int' and
1741 `unsigned long long int' values, respectively (64-bit quantities).
1743 * The new functions `strtof' and `strtold' parse floating-point values from
1744 strings, like `strtod', but they return `float' and `long double' values,
1745 respectively (on some machines `double' and `long double' are the same).
1747 * Ulrich Drepper has contributed new implementations of the floating-point
1748 printing and reading code used in the `printf' family of functions and
1749 `strtod', `strtof', and `strtold'. These new functions are perfectly
1750 accurate, and much faster than the old ones.
1752 * The implementation of the POSIX locale model was completely rewritten by
1753 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1754 to compile the POSIX locale definition.
1756 * The former dummy implementations of the strcoll and strxfrm function are
1757 now replaced by fully functional code contributed by Ulrich Drepper. The
1758 collation information comes from the POSIX locale definitions.
1760 * The new header <langinfo.h> defines an interface for accessing
1761 various locale-dependent data (using the locale chosen with `setlocale').
1763 * Ulrich Drepper has contributed a new suite of functions for operation on
1764 wide-character and multibyte-character strings, in <wchar.h>;
1765 and classification and case conversion of wide characters, in <wctype.h>.
1766 These new functions are conforming to the ISO C, Amendement 1 specification.
1768 * There is now a second implementation of the standard I/O library available.
1769 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1770 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1772 * You can now use positional parameter specifications in format strings
1773 for the `printf' and `scanf' families of functions. For example,
1774 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1775 ``Number 6, Mr Jones''. This is mainly useful when providing different
1776 format strings for different languages, whose grammars may dictate
1777 different orderings of the values being printed. To support this
1778 feature, the interface for `register_printf_handler' has changed; see
1779 the header file <printf.h> for details.
1781 * The `printf' and `scanf' families of functions now understand a new
1782 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1783 to group numbers as indicated by the locale; for `scanf' and friends, this
1784 says to accept as valid only a number with all the proper grouping
1785 separators in the right places. In the default "C" locale, numbers are
1786 not grouped; but locales for specific countries will define the usual
1787 conventions (i.e. separate thousands with `,' in the US locale).
1789 * The pgrp functions have been regularized, slightly incompatibly but much
1790 less confusingly. The core functions are now `getpgid' and `setpgid',
1791 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1792 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1793 provided for compatibility. There is no longer an incompatible `getpgrp'
1794 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1796 * The new header file <fts.h> and suite of functions simplify programs that
1797 operate on directory trees. This code comes from 4.4 BSD.
1799 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1800 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1801 NSS scheme used in glibc.
1803 * There is a new malloc debugging hook `__memalign_hook'.
1805 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1806 `unsigned int' in <sys/types.h>. These are for compatibility only and
1807 their use is discouraged.
1809 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1810 done differently, so that it works even without GNU ld.
1812 * New function `euidaccess' checks allowed access to a file like `access',
1813 but using the effective IDs instead of the real IDs.
1815 * The time zone data files have been updated for the latest and greatest
1816 local time conventions of the countries of the world.
1818 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1821 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1822 for formatting floating-point numbers. They are provided only for
1823 compatibility; new programs should use `sprintf' instead. There are
1824 also equivalent function for the `long double' floating-point type and
1825 all functions also exist in a reentrant form.
1827 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1828 functions for maintaining the login-record files (primarily of use to
1829 system programs such as `login'), and convenient functions for
1830 allocating and initializing a pseudo-terminal (pty) device.
1832 * Ulrich Drepper has contributed new support for System V style
1833 shared memory and IPC on systems that support it.
1835 * Ulrich Drepper has contributed several miscellaneous new functions found
1836 in System V: The `hsearch' family of functions provide an effective
1837 implementation of hash tables; `a64l' and `l64a' provide a very simple
1838 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1841 * Ulrich Drepper has contributed new reentrant counterparts for the
1842 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1844 * Ulrich Drepper has contributed new, highly-optimized versions of several
1845 string functions for the i486/Pentium family of processors.
1847 * Ulrich Drepper has updated the Linux-specific code, based largely
1848 on work done in Hongjiu Lu's version of GNU libc for Linux.
1849 The GNU library now supports Linux versions 2.0.10 and later,
1850 using the ELF object file format (i[3456]86-*-linux).
1852 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1854 * David Mosberger-Tang and Richard Henderson have ported the C library
1855 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1856 dynamic linking support for ELF/Alpha.
1858 * Richard Henderson contributed several Alpha optimized assembler function
1859 for arithmetic and string handling.
1861 * Ulrich Drepper has contributed a new set of message catalog functions to
1862 support multiple languages using the <libintl.h> interface, for use with
1863 his new package GNU gettext. Translation volunteers have contributed
1864 catalogs of the library's messages in Spanish, German, and Korean.
1866 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1867 program and the `catgets' function for reading the catalog files it
1868 creates. (The <libintl.h> interface is preferred; we include the
1869 <nl_types.h> interface using `catgets' only for source compatibility with
1870 programs already written to use it.)
1872 * New header file <values.h> gives SVID-compatible names for <limits.h>
1875 * Various new macros, declarations, and small header files for compatibility
1878 * New function `group_member' is a convenient way to check if a process has
1879 a given effective group ID.
1881 * When using GCC 2.7 and later, the socket functions are now declared in a
1882 special way so that passing an argument of type `struct sockaddr_in *',
1883 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1884 `struct sockaddr *' type, does not generate a type-clash warning.
1886 * New function `error' declared in header file <error.h> is a convenient
1887 function for printing error messages and optionally exiting; this is the
1888 canonical function used in GNU programs. The new functions `err', `warn',
1889 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1890 doing the same thing.
1892 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1893 POSIX.2 `glob' function to do ~ and {...} expansion.
1895 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1896 `clearenv' which is used in POSIX.9 is also available.
1898 * New function `getsid' returns session ID number on systems that support it.
1900 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1901 files <db.h> and <mpool.h> provide a rich set of functions for several
1902 types of simple databases stored in memory and in files, and <ndbm.h> is
1903 an old `ndbm'-compatible interface using the `db' functions. Link with
1904 `-ldb' to get these functions.
1906 * New macro `strdupa' copies a string like `strdup', but uses local stack
1907 space from `alloca' instead of dynamic heap space from `malloc'.
1909 * New function `strnlen' is like `strlen' but searches only a given maximum
1910 number of characters for the null terminator. `stpncpy', `strndup' and
1911 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1914 * New function `statfs' in header <sys/statfs.h>.
1916 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1917 provide convenient functions for operating on blocks of null-terminated
1920 * A new suite of functions in <utmp.h> handle all the details of reading
1921 and writing the utmp file.
1923 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1926 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1927 completely POSIX compliant and also implemented the extended functionality
1928 to handle alternate digit representation and alternate era date formats.
1930 * Ulrich Drepper provided an implementation of the `strptime' function
1931 defined in XPG4.2 which transforms a string into a `struct tm' value.
1933 * Paul Eggert provided the tzselect shell script as part of the timezone
1934 code. The shell script makes it easy to select the correct timezone
1937 * The implementation of the malloc family of functions is completely replaced
1938 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1939 The implementation uses the mmap function (if available) and it is
1940 optimized for the use in multi threaded programs.
1942 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1943 functions. This new functionality is usable by specifying a special
1944 salt string and it is compatible with implementation on *BSD systems.
1946 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1947 `getsubopt' to handle second level command line options, `bsd_signal'
1948 to access BSD style `signal' functionality, the obsolete `regexp' style
1951 * the `lchown' function is available on system which support this
1954 * The implementation of the shadow password handling function was contributed
1957 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1959 * POSIX.1g support was added. The <sys/select.h> header is available,
1960 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1961 implementation of `getaddrinfo'.
1965 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1967 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1968 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1970 * The new function `daemon' from 4.4 BSD is useful for server programs that
1971 want to put themselves in the background.
1973 * Joel Sherrill has contributed support for several standalone boards that
1974 run without an operating system.
1976 * `printf', `scanf' and friends now accept a `q' type modifier for long
1977 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1979 * All of the code taken from BSD (notably most of the math and networking
1980 routines) has been updated from the BSD 4.4-Lite release.
1982 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1984 * The new functions `getdomainname' and `setdomainname' fetch or change the
1985 YP/NIS domain name. These are system calls which exist on systems which
1988 * The time zone data files have been updated for the latest international
1991 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1992 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1996 * The C library now includes support for Sun RPC, from Sun's free
1997 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1998 are included. (There is still no support for YP.)
2000 * Tom Quinn has contributed a port of the C library to SGI machines running
2001 Irix 4 (mips-sgi-irix4).
2003 * The new `lockf' function is a simplified interface to the locking
2004 facilities of `fcntl', included for compatibility.
2006 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2008 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2010 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2013 * The error message printed by `assert' for a failed assertion now includes
2014 the name of the program (if using GNU ld) and the name of the calling
2015 function (with versions of GCC that support this).
2017 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2019 * The library now includes the <sys/mman.h> header file and memory
2020 management functions `mmap', `munmap', `mprotect', `msync', and
2021 `madvise', on systems that support those facilities.
2023 * The interface for `mcheck' has changed slightly: the function called to
2024 abort the program when an allocation inconsistency is detected now takes
2025 an argument that indicates the type of failure. The new function
2026 `mprobe' lets you request a consistency check for a particular block at
2027 any time (checks are normally done only when you call `free' or `realloc'
2030 * It is now possible to easily cross-compile the C library, building on one
2031 system a library to run on another machine and/or operating system. All
2032 you need to do is set the variable `HOST_CC' in `configparms' to the
2033 native compiler for programs to run on the machine you are building on (a
2034 few generator programs are used on Unix systems); set `CC' to the
2037 * The new function `fexecve' (only implemented on the GNU system) executes
2038 a program file given a file descriptor already open on the file.
2042 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2043 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2045 * You can set the variable `libprefix' in `configparms' to specify a prefix
2046 to be prepended to installed library files; this makes it easy to install
2047 the GNU C library to be linked as `-lgnuc' or whatever.
2049 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2050 copies a limited number of characters from a string, and returns the
2051 address of the last character written.
2053 * You no longer need to check for whether the installed `stddef.h' is
2054 compatible with the GNU C library. configure now checks for you.
2056 * You can now define a per-stream `fileno' function to convert the
2057 stream's cookie into an integral file descriptor.
2059 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2060 allocates zero bytes of storage, and returns a unique pointer which
2061 you can pass to `realloc' or `free'. The behavior is undefined if
2062 you dereference this pointer.
2064 * The C library now runs on Sony NEWS m68k machines running either
2065 NewsOS 3 or NewsOS 4.
2067 * The new `syscall' function is a system-dependent primitive function
2068 for invoking system calls. It has the canonical behavior on Unix
2069 systems, including unreliable return values for some calls (such as
2070 `pipe', `fork' and `getppid').
2072 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2073 to `EAGAIN', which is the preferred name. On systems whose kernels
2074 use two distinct codes, the C library now translates EWOULDBLOCK to
2075 EAGAIN in every system call function.
2079 * The GNU C Library Reference Manual is now distributed with the library.
2080 `make dvi' will produce a DVI file of the printed manual.
2081 `make info' will produce Info files that you can read on line using C-h i
2082 in Emacs or the `info' program.
2083 Please send comments on the manual to bug-glibc-manual@gnu.org.
2085 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2087 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2089 * Jason Merrill has contributed a port to the Sequent Symmetry running
2090 Dynix version 3 (i386-sequent-dynix).
2092 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2093 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2095 * New function `memory_warnings' lets you arrange to get warnings when
2096 malloc is running out of memory to allocate, like Emacs gives you.
2098 * The C library now contains the relocating allocator used in Emacs 19 for
2099 its editing buffers. This allocator (ralloc) minimizes allocation
2100 overhead and fragmentation by moving allocated regions around whenever it
2101 needs to. You always refer to a ralloc'd region with a "handle" (a
2102 pointer to a pointer--an object of type `void **').
2104 * There is a new `printf' format: `%m' gives you the string corresponding
2105 to the error code in `errno'.
2107 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2108 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2109 pass, the `a' modifier says to fill in a `char **' you pass with a
2112 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2113 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2114 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2116 * `mkstemp' is a traditional Unix function to atomically create and open a
2117 uniquely-named temporary file.
2121 * The standard location for the file that says what the local timezone is
2122 has changed again. It is now `/usr/local/etc/localtime' (or more
2123 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2125 * The distribution no longer contains any files with names longer than 14
2128 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2129 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2131 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2135 * The configuration process has changed quite a bit. The `configure'
2136 script is now used just like the configuration scripts for other GNU
2137 packages. The `sysdeps' directory hierarchy is much rearranged.
2138 The file `INSTALL' explains the new scheme in detail.
2140 * The header files no longer need to be processed into ANSI C and
2141 traditional C versions. There is just one set of files to install, and
2142 it will work with ANSI or old C compilers (including `gcc -traditional').
2144 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2145 MIPS DECStation running Ultrix 4.
2147 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2148 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2149 made itself into a shared library.
2151 * Yet further improved support for the i386, running 4.3 BSD-like systems
2152 (such as Mach 3 with the Unix single-server), or System V.
2154 * New function `strncasecmp' to do case-insensitive string comparison
2155 with limited length.
2157 * New function `strsep' is a reentrant alternative to `strtok'.
2159 * New functions `scandir' and `alphasort' for searching directories.
2161 * New function `setenv' is a better interface to `putenv'.
2163 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2164 function for traversing a directory tree.
2166 * The GNU obstack package is now also part of the C library.
2167 The new function `open_obstack_stream' creates a stdio stream that
2168 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2169 formatted output directly to an obstack.
2171 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2172 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2174 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2176 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2177 things to your strings.
2179 * There are some new test programs: test-fseek, testmb, and testrand.
2181 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2182 These ports are not finished, but are a good starting place for really
2183 supporting those systems.
2185 * `/etc/localtime' is now the standard location for the file that says what
2186 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2187 This follows the general principle that `/etc' is the place for all local
2188 configuration files.
2190 * The C library header files now use `extern "C"' when used by the C++
2191 compiler, so the C library should now work with C++ code.
2193 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2194 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2197 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2198 function which uses the `merge sort' algorithm, and is said to be
2199 significantly faster than the old GNU `qsort' function. Merge sort is
2200 now the standard `qsort' function. The new algorithm can require a lot
2201 of temporary storage; so, the old sorting function is called when the
2202 required storage is not available.
2204 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2205 provides the Unix `crypt' function, plus some other entry points.
2207 * The code and header files taken from 4.4 BSD have been updated with the
2208 latest files released from Berkeley.
2210 ----------------------------------------------------------------------
2211 Copyright information:
2213 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2215 Permission is granted to anyone to make or distribute verbatim copies
2216 of this document as received, in any medium, provided that the
2217 copyright notice and this permission notice are preserved,
2218 thus giving the recipient permission to redistribute in turn.
2220 Permission is granted to distribute modified versions
2221 of this document, or of portions of it,
2222 under the above conditions, provided also that they
2223 carry prominent notices stating who last changed them.
2226 version-control: never
projects / thirdparty / glibc.git / blob