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 10060, 10062, 10357, 11120, 11561, 12723, 13550, 13889, 13951, 13988,
13 14142, 14176, 14200, 14280, 14293, 14317, 14327, 14478, 14496, 14686,
14 14812, 14888, 14920, 14964, 14981, 14982, 14985, 14994, 14996, 15003,
15 15006, 15020, 15023, 15036, 15054, 15055, 15062, 15078, 15160, 15214,
16 15232, 15234, 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327,
17 15330, 15335, 15336, 15337, 15342, 15346, 15361, 15366, 15394, 15405.
19 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
22 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
23 fixed (Bugzilla #15330).
25 * Add support for calling C++11 thread_local object destructors on thread
26 and program exit. This needs compiler support for offloading C++11
27 destructor calls to glibc.
29 * Improved worst case performance of libm functions with double inputs and
32 * Support for priority inherited mutexes in pthread condition variables on
33 non-x86 architectures.
35 * Added a benchmark framework to track performance of functions in glibc.
37 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
38 It is based on draft TS 18661 and currently enabled as a GNU extension.
42 * The following bugs are resolved with this release:
44 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
45 9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
46 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
47 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
48 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
49 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298, 14303,
50 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417,
51 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519,
52 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576,
53 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648,
54 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743,
55 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805,
56 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835,
57 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872, 14879,
58 14889, 14893, 14898, 14914.
60 * Optimization of memcpy for MIPS.
62 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
63 EMFILE has been fixed (Bugzilla #14889).
65 * The add-on ports collection is now distributed in the "ports" subdirectory
66 of the main GNU C Library distribution, rather than separately.
68 * Port to ARM AArch64 contributed by Linaro.
70 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
71 Optimized versions of memcpy, memset, and memcmp added for System z10 and
73 Implemented by Andreas Krebbel.
75 * The new function secure_getenv allows secure access to the environment,
76 returning NULL if running in a SUID/SGID process. This function replaces
77 the internal function __secure_getenv.
79 * SystemTap static probes have been added into the dynamic linker.
80 Implemented by Gary Benson.
82 * Optimizations of string functions strstr, strcasestr and memmem.
83 Implemented by Maxim Kuvyrkov.
85 * The minimum Linux kernel version that this version of the GNU C Library
86 can be used with is 2.6.16.
88 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
89 powerpc POWER7. Implemented by Will Schmidt.
91 * New configure option --disable-nscd builds the C library such that it
92 never attempts to contact the Name Service Caching Daemon (nscd).
93 New configure option --disable-build-nscd avoids building nscd itself;
94 this is the default if --disable-nscd is used.
96 * Improved support for cross-compilation, including cross-testing and
97 bootstrap builds without a previously built glibc.
99 * Several testsuite tests are now able to test multiple IFUNC variants of an
100 interface, rather than just testing the one that would be chooen by
103 * New configure options --with-bugurl and --with-pkgversion, for
104 distributors to use to embed their bug-reporting and package version
105 information in --help and --version output.
107 * The ttyname and ttyname_r functions on Linux now fall back to searching for
108 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
109 allows creation of chroots without the procfs mounted on /proc.
111 * The `crypt' function now fails if passed salt bytes that violate the
112 specification for those values. On Linux, the `crypt' function will
113 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
114 enabled, and fail on encrypted strings using the MD5 or DES algorithm
115 when the mode is enabled.
117 * The `clock_*' suite of functions (declared in <time.h>) is now available
118 directly in the main C library. Previously it was necessary to link with
119 -lrt to use these functions. This change has the effect that a
120 single-threaded program that uses a function such as `clock_gettime' (and
121 is not linked with -lrt) will no longer implicitly load the pthreads
122 library at runtime and so will not suffer the overheads associated with
123 multi-thread support in other code such as the C++ runtime library.
125 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
130 * The following bugs are resolved with this release:
132 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
133 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
134 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
135 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
136 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
137 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
138 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
139 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
140 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
141 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
142 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
143 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
144 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
145 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
146 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
147 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
148 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
149 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
150 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
151 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
152 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
153 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
156 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
157 configuring glibc with:
158 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
159 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
160 Implemented by H.J. Lu.
164 + define static_assert
166 + do not declare gets
168 + declare at_quick_exit and quick_exit also for ISO C11
170 + aligned_alloc. NB: The code is deliberately allows the size parameter
171 to not be a multiple of the alignment. This is a moronic requirement
172 in the standard but it is only a requirement on the caller, not the
177 + uchar.h support added
179 + CMPLX, CMPLXF, CMPLXL added
181 Implemented by Ulrich Drepper.
183 * Support for the IA-64 has been moved to ports.
185 * Remove support for anything but ELF binary format
187 * Checking versions of poll, ppoll added.
188 Implemented by Ulrich Drepper.
190 * More generic and 64-bit performance optimizations to math functions.
191 Implemented by Ulrich Drepper.
193 * New configure option --enable-obsolete-rpc makes the deprecated RPC
194 headers and functions available at compile time as they were before
195 version 2.14. This option will be removed at some time in the future
196 after the TI-RPC library becomes fully sufficient for the needs of
197 existing applications.
199 * Compatibility code for Linux kernel versions before 2.4 has been removed.
200 Note that glibc is not expected to work with any Linux kernel version
203 * New header <sys/auxv.h> and function getauxval allowing easy access to
204 the AT_* key-value pairs passed from the Linux kernel. The header also
205 defines the HWCAP_* bits associated with the AT_HWCAP key.
207 * New locales: mag_IN
209 * New configure option --enable-systemtap builds SystemTap static probes
210 into libc for setjmp and longjmp and into libpthread for various operations.
211 So far the setjmp/longjmp probes and some of the libpthread probes are
212 provided only for i*86 and x86_64.
213 Implemented by Roland McGrath and Rayson Ho.
215 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
217 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
220 * More optimized functions for SPARC. Implemented by David S. Miller.
222 * Improved support for cross-compilation, especially bootstrap builds
223 without a previously built glibc.
225 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
226 Chris Metcalf from Tilera.
228 * Support for the old ARM ABI has been removed from ports. Only the EABI is
229 now supported for ARM processors.
231 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
232 as the name of the dynamic linker, to distinguish it from the
233 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
235 * Support for CRIS has been removed from ports.
237 * A new class of installed header has been documented for low-level
238 platform-specific functionality. PowerPC added the first instance with a
239 function to provide time base register access. Contributed by Tulio
240 Magno Quites Machado Filho.
242 * ix86 configurations now install header files that are consistent with
243 what x86-64 configurations install. These same header files can be used
244 for -m32, -m64, or -mx32 builds.
245 Contributed by H.J. Lu.
247 * Math library bug fixes. A thorough audit of all open math library bugs was
248 conducted by Joseph Myers. Significant progress was made on many math
249 library bugs resulting in more accurate exceptions and function results.
250 Many thanks to all those that contributed including Andreas Jaeger for his
251 patch review and work on the x87 trigonometric instruction issues.
253 * Timezone data is no longer installed. Timezone-related binaries and scripts
254 will continue to be installed. Users should obtain their timezone data from
255 their distribution provider or from the tzdata package at
256 <ftp://munnari.oz.au/pub/>.
260 * The following bugs are resolved with this release:
262 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
263 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
264 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
265 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
266 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
267 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
268 13484, 13506, 13515, 13523, 13524, 13538, 13540
270 * New program pldd to list loaded object of a process
271 Implemented by Ulrich Drepper.
273 * Add nss_db support back to glibc. No more dependency on Berkeley db
274 and support for initgroups lookups.
275 Implemented by Ulrich Drepper.
277 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
278 Contributed by HJ Lu.
280 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
281 Contributed by HJ Lu.
283 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
284 on x86-32 and x86-64.
285 Contributed by Liubov Dmitrieva.
287 * Optimized strchr and strrchr for SSE on x86-32.
288 Contributed by Liubov Dmitrieva.
290 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
291 for x86-64 and x86-32.
292 Contributed by Liubov Dmitrieva.
294 * New interfaces: scandirat, scandirat64
295 Implemented by Ulrich Drepper.
297 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
298 Implemented by Ulrich Drepper.
300 * nscd now also caches the netgroup database.
301 Implemented by Ulrich Drepper.
303 * Integrate libm with gcc's -ffinite-math-only option.
304 Implemented by Ulrich Drepper.
306 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
307 to math functions. Implemented by Ulrich Drepper.
309 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
310 Implemented by Ulrich Drepper.
312 * New Linux interfaces: process_vm_readv, process_vm_writev
314 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
315 Implemented by Ulrich Drepper.
317 * Optimized nearbyint and strcasecmp for PPC.
318 Implemented by Adhemerval Zanella.
320 * New locales: bho_IN, unm_US, es_CU, ta_LK
324 * The following bugs are resolved with this release:
326 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
327 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
328 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
329 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
330 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
331 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
332 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
333 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
334 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
335 12795, 12811, 12813, 12814, 12841
337 * The RPC implementation in libc is obsoleted. Old programs keep working
338 but new programs cannot be linked with the routines in libc anymore.
339 Programs in need of RPC functionality must be linked against TI-RPC.
340 The TI-RPC implementation is IPv6 enabled and there are other benefits.
342 Visible changes of this change include (obviously) the inability to link
343 programs using RPC functions without referencing the TI-RPC library and the
344 removal of the RPC headers from the glibc headers.
345 Implemented by Ulrich Drepper.
347 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
348 syncfs, setns, sendmmsg
350 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
351 yue_HK, lij_IT, mhr_RU
353 * New encodings: CP770, CP771, CP772, CP773, CP774
355 * New program sotruss to trace calls through PLTs
356 Implemented by Ulrich Drepper.
358 * The malloc hook implementation is marked deprecated and will be removed
359 from the default implementation in the next version. The design never
360 worked ever since the introduction of threads. Even programs which do
361 not create threads themselves can use multiple threads created internally.
365 * The following bugs are resolved with this release:
367 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
368 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
369 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
370 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
373 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
375 * POWER7 optimizations: memset, memcmp, strncmp
377 * New optimized string functions for x86-64: strnlen (SSE2),
378 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
379 Implemented by Ulrich Drepper.
383 * The following bugs are resolved with this release:
385 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
386 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
387 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
388 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
389 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
390 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
391 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
392 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
394 * New interfaces: pthread_getname_np, pthread_setname_np
396 * New Linux interface: recvmmsg
398 * STT_GNU_IFUNC implemented for Sparc by David Miller.
400 * The dynamic linker now recognizes supported ABI versions from the
401 EI_ABIVERSION field in the ELF header.
402 Implemented by Ulrich Drepper.
404 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
405 will not be used to fill in password fields in the passwd.byname replies.
406 Instead it is used to synthesize the shadow.byname table, should it be
407 missing. This is a useful mode in some installations involving Solaris.
408 Implemented by Ulrich Drepper.
410 * New locales: kok_IN, sq_MK, cv_RU
414 * The following bugs are resolved with this release:
416 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
417 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
418 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
419 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
420 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
421 10789, 10817, 10823, 10840, 10847
423 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
425 Implemented by Ulrich Drepper.
427 * Checking version of longjmp added that fails if an uninitialized stack
428 frame would be created. Implemented by Ulrich Drepper.
430 * STT_GNU_IFUNC is now supported in static executables.
431 Implemented by H.J. Lu.
433 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
435 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
436 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
437 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
438 Contributed by H.J. Lu.
440 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
441 Implemented by Ulrich Drepper.
443 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
445 Contributed by H.J. Lu.
447 * Support for fma instruction in AVX on x86-64.
448 Implemented by H.J. Lu and Ulrich Drepper.
450 * AVX support in x86-64 auditing support in ld.so.
451 Implemented by H.J. Lu.
453 * STB_GNU_UNIQUE support added.
454 Implemented by Ulrich Drepper.
456 * Implement second fallback mode for optimized DNS lookup for even more
457 broken environments. If two requests from the same port are not
458 handled correctly close the socket and open a new one before sending
459 the second request. The 'single-request-reopen' option in /etc/resolv.conf
460 can be used to select this mode right away, instead of rediscovering the
461 necessity is every process again.
462 Implemented by Ulrich Drepper.
464 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
465 Implemented by Adam Tkac.
467 * Optimized iconv conversions for S390x.
468 Implemented by Andreas Krebbel.
470 * Using condvars with PI mutexes is now more efficient due to kernel
471 support for requeueing to PI futexes. NPTL support added for x86-64.
472 Implemented by Ulrich Drepper.
474 * New locales: ps_AF, my_MM
478 * The following bugs are resolved with this release:
480 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
481 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
482 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
483 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
484 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
486 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
487 Implemented by Ulrich Drepper.
489 * New Linux interfaces: accept4, fallocate, fallocate64.
490 Implemented by Ulrich Drepper.
492 * Correct declarations of string function when used in C++ code. This
493 could lead to compile errors for invalid C++ code.
495 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
498 * New POSIX 2008 interface: psiginfo
499 Implemented by Ulrich Drepper.
501 * New ISO C++1x interfaces: quick_exit, at_quick_exit
502 Implemented by Ulrich Drepper.
504 * Support for selecting between multiple function definitions at runtime
505 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
507 * The libcrypt library can now use the hash function implementations in
508 NSS. Implemented by Ulrich Drepper.
510 * The malloc implementation can be compiled to be less memory efficient
511 but higher performing in multi-threaded programs.
512 Implemented by Ulrich Drepper.
514 * New locales: nan_TW@latin, ks_IN
516 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
517 Implemented by Ulrich Drepper.
519 * Extended printf hook support. It is possible to use user-defined types
520 and extend existing format specifiers.
521 Implemented by Ulrich Drepper.
523 * Handling for group shadow files has been added.
524 Implemented by Ulrich Drepper.
526 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
527 servers (the case, e.g., for some people using the built-in DNS
528 server in ADSL modems/routers). There is a once-per-process timeout
529 in case of a broken server. To avoid it, users can run nscd or put
530 'options single-request' in /etc/resolv.conf.
531 Implemented by Ulrich Drepper.
535 * The following bugs are resolved with this release:
537 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
538 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
539 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
540 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
541 6968, 6974, 6980, 6995, 7008, 7009, 7029
543 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
544 up at the same time. Implemented by Ulrich Drepper.
546 * TLS descriptors for LD and GD on x86 and x86-64.
547 Implemented by Alexandre Oliva.
549 * getaddrinfo now handles DCCP and UDPlite.
550 Implemented by Ulrich Drepper.
552 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
553 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
554 Implemented by Ulrich Drepper.
556 * New implementation of memmem, strstr, and strcasestr which is O(n).
557 Implemented by Eric Blake.
559 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
561 * Implement "e" option for popen to open file descriptor with the
562 close-on-exec flag set. Implemented by Ulrich Drepper.
564 * Implement "b" mode for fmemopen. In this mode writes writes don't
565 implicitly add a NUL byte and seeks from the end of the buffer really
566 use the buffer end, not the string length as the basis.
567 Implemented by Ulrich Drepper.
569 * Many functions, exported and internal, now atomically set the close-on-exec
570 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
572 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
574 Implemented by Pravin Satpute.
576 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
580 * The following bugs are resolved with this release:
582 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
583 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
584 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
585 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
586 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
587 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
588 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
590 * New locales: bo_CN, bo_IN, shs_CA.
592 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
594 * Sorting rules for some Indian languages (Devanagari and Gujarati).
595 Implemented by Pravin Satpute.
597 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
599 * nscd caches now all timeouts for DNS entries
600 Implemented by Ulrich Drepper.
602 * nscd is more efficient and wakes up less often.
603 Implemented by Ulrich Drepper.
605 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
606 vdprintf, and obstack_vprintf.
607 Implemented by Jakub Jelinek.
609 * Faster memset for x86-64.
610 Implemented by Harsha Jagasia and H.J. Lu.
612 * Faster memcpy on x86.
613 Implemented by Ulrich Drepper.
615 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
616 Implemented by Ulrich Drepper.
618 * Faster sqrt and sqrtf implemention for some PPC variants.
619 Implemented by Steven Munroe.
623 * The following bugs are resolved with this release:
625 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
626 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
627 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
628 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
629 5071, 5103, 5104, 5112, 5113, 5184, 5186
631 * More checking functions: fread, fread_unlocked, open*, mq_open.
632 Implemented by Jakub Jelinek and Ulrich Drepper.
634 * Extend fortification to C++. Implemented by Jakub Jelinek.
636 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
637 by not recognizing 'a' as a modifier when those specs are requested.
638 Implemented by Jakub Jelinek.
640 * PPC optimizations to math and string functions.
641 Implemented by Steven Munroe.
643 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
644 options to be passed. Implemented by Ulrich Drepper.
646 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
648 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
649 Implemented by Ulrich Drepper.
651 * Handle private futexes in the NPTL implementation.
652 Implemented by Jakub Jelinek and Ulrich Drepper.
654 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
655 Implemented by Roland McGrath and Ulrich Drepper.
657 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
659 * SHA-256 and SHA-512 based password encryption.
660 Implemented by Ulrich Drepper.
662 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
663 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
666 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
667 Implemented by Ulrich Drepper.
671 * The following bugs are resolved with this release:
673 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
674 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
675 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
676 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
677 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
678 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
679 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
682 * New Linux interfaces: epoll_pwait, sched_getcpu.
684 * New generic interfaces: strerror_l.
686 * nscd can now cache the services database. Implemented by Ulrich Drepper.
690 * The following bugs are resolved with this release:
692 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
693 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
694 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
695 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
696 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
697 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
698 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
699 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
700 3225, 3251, 3252, 3253, 3273
702 * For Linux, the sorting of addresses returned by getaddrinfo now also
703 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
704 Implemented by Ulrich Drepper.
706 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
707 Implemented by Ulrich Drepper.
709 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
711 * New iconv module for MIK. Contributed by Alexander Shopov.
713 * For sites with broken group and/or passwd database, the auto-propagate
714 option of nscd can prevent creating ID lookup entries from the results
715 of a name lookup and vice versa. This usually is no problem but some
716 site might have problems with the default behavior.
717 Implemented by Ulrich Drepper.
719 * Iterating over entire database in NIS can be slow. With the
720 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
721 to trade time for memory. The entire database will be read at once.
722 Implemented by Ulrich Drepper.
724 * The interfaces introduced in RFC 3542 have been implemented by
727 * Support for the new ELF hash table format was added by Ulrich Drepper.
729 * Support for priority inheritance mutexes added by Jakub Jelinek and
732 * Support for priority protected mutexes added by Jakub Jelinek.
734 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
735 or_IN, csb_PL, fy_NL, sr_ME.
739 * More overflow detection functions.
741 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
742 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
744 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
745 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
746 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
747 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
748 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
749 by Masahide Washizawa.
751 * It is now possible to install audit libraries for the dynamic linker using
752 LD_AUDIT. Implemented by Ulrich Drepper.
754 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
755 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
756 For a libc and libpthread that works well on Linux 2.4 kernels, we
757 recommend using the stable 2.3 branch.
759 * The new function open_wmemstream acts like open_memstream,
760 but uses a wchar_t wide character buffer.
762 * The new function ppoll is an improved version of poll, similar to pselect.
764 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
765 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
766 renameat, unlinkat, linkat, symlinkat, readlinkat.
768 * New Linux kernel system calls: unshare,
769 inotify_init, inotify_add_watch, inotify_rm_watch.
771 * The euidaccess function is now also known by the alias eaccess,
772 for compatibility with some other systems.
774 * Timezone data updated to 2006b version.
778 * The following bugs are resolved with this release:
780 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
781 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
782 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
783 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
784 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
785 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
787 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
789 * As of this release, GCC 4 can be used to compile the C Library.
791 * Timezone data updated to 2005m version.
795 * The following bugs are resolved with this release:
797 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
798 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
799 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
800 777, 787, 821, 822, 823, 825
802 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
806 * Support for RFC 3678. Real implementations exist only for Linux so far.
807 Implemented by Ulrich Drepper.
809 * nscd can now cache entries persistently. Expiring entries are reloaded.
810 For speedups the cache can be shared in memory with client processes.
811 Implemented by Ulrich Drepper.
813 * nscd can now perform SELinux checks.
814 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
816 * getaddrinfo queries are now cached. Canonical name lookup is performed
818 Implemented by Ulrich Drepper.
820 * The nothrow function attribute is used when headers are used by gcc when
821 compiling C code. This can avoid significant amounts of exception
824 * The malloc functions perform more error checking and are stricter when
825 it comes to reacting on errors. The default action is to terminate
826 the process after showing an error message. Implemented by Ulrich Drepper.
828 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
829 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
831 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
832 namespaces using the new function dlmopen(). This feature is of course,
833 like most other dynamic loading functionality, not available in statically
834 linked applications. Implemented by Ulrich Drepper.
836 * Low-overhead boundary checking variants of string and some stdio functions
837 were added. These are to be used in conjunction with a gcc patch by
838 Jakub Jelinek which adds calls to these functions if possible.
839 Implemented by Jakub Jelinek and Ulrich Drepper.
841 * Old code for several operating systems and machine architectures that
842 have not been in working condition in a long time have been removed from
843 the main source tree maintained by the GNU C Library's maintainers.
844 These files are now reside in the separate `ports' source module
845 that is usable as an add-on when building the library.
849 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
850 interrogate the dynamic linker, compatible with the Solaris interface.
852 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
853 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
855 * getifaddrs now uses the netlink interface on Linux to get its information.
856 Implemented by Thorsten Kukuk.
858 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
859 Implemented by Ulrich Drepper.
861 * support for non-executable stacks on x86 has been added. Changes mostly
864 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
867 * getaddrinfo now performs destination address selection according to
872 * Thread-safe interfaces for many functions that access locale data
873 were added in version 2.3, but these features were omitted from NEWS.
874 Many functions have variants with an `_l' suffix that take a `locale_t'
875 object as a parameter rather than consulting the current locale.
876 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
877 create and maintain `locale_t' objects. Additionally, the new function
878 `uselocale' sets "the current locale" (as used by functions not so
879 parameterized) set for an individual thread. These features were added
880 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
882 * The functions getresuid, getresgid, setresuid, and setresgid, which
883 have long been available on Linux, are now declared in <unistd.h>
884 and are now also available on the Hurd.
886 * ELF thread-local storage support (TLS) now works on x86-64.
888 * The new dynamic string token $LIB is expanded in shared library names.
889 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
891 * Aldy Hernandez contributed complete software floating point support for
892 PowerPC machines with no FPU.
894 * fexecve is implemented on Linux.
896 * The `btowc' function should work at least twice as fast due to
897 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
899 * With approriate thread add-ons cancelable functions are now implemented
900 in libc.so as well. No need to call the function in libpthread. This
901 change allowed to finally disable the incorrect and expensive handling
902 of weak definition in ld.so.
904 * Yet more PLT entries in libc.so have been removed. We finally arrived
905 at the bare minimum. Startup times improved appropriately.
907 * Support for the new Linux/x86 system call interface was added. The
908 AT_SYSINFO auxiliary vector entry is recognized and handled.
912 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
915 * iconv (the program and the interface) now accepts empty names (excluding
916 options like //TRANSLIT) to mean "use charset of current locale".
918 * localedef can now transliterate characters in strings which are not in
919 the provided charmap. The information from the input locale is used.
921 * Prelinking support was added for ELF targets. This requires additional
922 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
924 * Read-only stdio streams now use mmap to speed up operation by eliminating
925 copying and buffer underflows. To use add 'm' to the mode string of
926 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
928 * The malloc functions were completely rewritten by Wolfram Gloger based
929 on Doug Lea's malloc-2.7.0.c.
931 * Isamu Hasegawa contributed a completely new and POSIX-conformant
932 implementation of regex.
934 * Bruno Haible upgraded the iconv and locale implementation to support
937 * Contents of the LC_* and LANG environment variables in the CEN style are
938 not recognized anymore. It never was used. Change by Ulrich Drepper.
940 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
941 thread-local storage (TLS) ABI on some platforms.
942 Changes by Ulrich Drepper. SH support by Kaz Kojima.
944 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
945 EUC-JISX0213, and TSCII.
947 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
948 BSD-compatible interface for getting all network interface addresses.
949 Implementation for IPv4 by Roland McGrath.
951 * Loading of locale data is faster due to the introduction of a locale
952 archive. Implemented by Roland McGrath and Ulrich Drepper.
954 * Startup times are significantly reduced by not using exported functions
955 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
958 * Steven Munroe contributed a port to PowerPC64/Linux.
962 * The Hurd now uses the GNU libio implementation of stdio rather than the
963 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
965 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
966 with the same behavior as the Linux system call of the same name.
970 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
971 128-bit long double format.
973 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
974 IBM1161, and IBM1162 charsets.
976 * Andreas Jaeger contributed a port to x86-64/Linux.
978 * Peter Bruin contributed a port to PowerPC/Hurd.
980 * libc functions using I/O streams now can handle wide-oriented streams
983 * optimizations in the dynamic linker. Binaries created by recent binutils
984 versions start up quicker due to reduced time spent on relocations.
986 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
990 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
991 asinh, atanh, j0 for the 128-bit long double format.
993 * Bruno Haible updated all the code handling Unicode in some form to
996 * Speed of regex for single-byte locales is back to previous levels.
997 Patch by Isamu Hasegawa.
999 * Alpha, SPARC, and IA-64 now also using floating stacks.
1001 * Startup time of internationalized applications greatly improved through
1002 iconv cache. Use iconvconfig to generate the cache file.
1003 Contributed by Ulrich Drepper.
1005 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1006 severe performance problems. Patch by David Mosberger.
1008 * The Hurd port got a lot more functionality like AIO, various stdio
1009 extensions, etc. Mainly done by Roland McGrath.
1011 * mtrace can now lookup symbols in shared libraries.
1015 * Intel's IA-64 math library is largely integrated. It provides fast and
1016 accurate implementatations for most basic and standard math functions
1017 in float, double, and long double format.
1019 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1020 and asin for the 96-bit long double format and asin, log, tan for the
1021 128-bit long double format.
1023 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1024 The basic double functions exist today. Contributed by Abraham Ziv
1025 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1026 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1028 * An asynchronous name lookup library was added. The interface is designed
1029 after POSIX AIO. The proposal was circulated beforehand to get comments.
1030 No negative ones came in. Implemented by Ulrich Drepper.
1032 * Port to S390/64bit contributed by Martin Schwidefsky
1033 <schwidefsky@de.ibm.com>.
1035 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1036 of functions for Linux/IA-64.
1038 * The RPC code is now thread safe. Threads can now use the same service
1039 of different services at the same time. Patch by Eric Norum
1040 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1042 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1043 family of functions for Linux/S390.
1045 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1046 of functions for Linux/x86.
1048 * Port to Linux/CRIS contributed by Axis Communications.
1052 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1053 we can now check for namespace violations and missing declarations. The
1054 result is that almost all headers are now Unix-compliant (as defined in
1055 the upcoming XPG6). The negative side is that some programs might need
1056 corrections, too, if they depend on the incorrect form of the headers in
1057 previous versions which defined too many symbols and included too many
1060 * regex now handles multibyte character sets correctly.
1061 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1063 * iconv (the program) does now conform to the upcoming XPG6 and handles
1064 charmaps. Instead of the charset names the path of charmaps can be
1065 provided and the conversion happens based on this data.
1066 Contributed by Ulrich Drepper.
1068 * The locale program now provides detailed information about the installed
1073 only lists the names of the supported locales
1077 provides details such as country, language, and codeset name.
1078 Contributed by Ulrich Drepper.
1082 * The gencat program now parses the input file according to the charset
1083 selected by the LC_CTYPE category. This is important for stateful
1084 character sets. To make generating catalogs easier there is a way
1085 to overwrite the charset selected by the locale: before the first
1086 message or $ quote line the catalog can contain a line like
1088 $ codeset=ISO-8859-2
1090 to select the charset (ISO-8859-2 in this case).
1092 Implemented by Shinya Hanataka and Ulrich Drepper.
1094 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1095 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1096 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1098 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1099 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1101 * The LANGUAGE environment variable is now ignored unless the locale is
1102 changed from the default "C" locale.
1104 * The usual bug fixes.
1108 * Greg McGary added runtime support for bounds checking using gcc's
1109 new -fbounded-pointers option. ix86 target is complete. PowerPC
1112 * Thorsten Kukuk added secure mode support to nscd.
1114 * The Berkeley db libraries have been removed.
1116 Related, the nss_db module is now in a separate package since it
1117 obviously requires a database library being available.
1119 * Wide character I/O streams implemented by Ulrich Drepper.
1121 * Functions from the extended socket API added by Ulrich Drepper.
1123 * Functions feenableexcept and fedisableexcept to control the
1124 behaviour of individual exceptions have been added by Andreas Jaeger.
1126 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1128 * The resolver code has been updated from bind 8.2.3-T5B which supports
1129 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1132 This change could in some situations effect backward compatibility. Since
1133 now `_res' is a thread-local instead of a global variable, modifying it
1134 in one thread does not have any effect in other threads.
1136 The resolver library was also extended to allow IPv6 as the transport
1137 protocol for the requests. This work was done by Stig Venaas.
1139 * Compatibility code for K&R C compilers has been removed from the
1140 header files. A ISO C compiler is needed to use the library
1141 (conforming to either C89 or C99 standard).
1143 * Complete rewrite of the localedef program to support multibyte character
1144 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1145 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1146 Implemented by Ulrich Drepper.
1148 Bruno Haible significantly improved the generation and use of the data
1149 structures for the wide character tables.
1151 * Plural handling in gettext implemented by Ulrich Drepper.
1153 * The utmp daemon has been removed.
1155 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1157 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1160 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1162 * POSIX barriers implemented by Kaz Kylheku.
1164 * POSIX spawn function family implemented by Ulrich Drepper.
1166 * POSIX spinlocks are now available.
1168 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1170 * the configure option --enable-kernel=X.Y.Z allows to strip out
1171 compatibility for kernel versions before X.Y.Z. This is currently only
1172 implemented for Linux.
1174 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1175 field sin6_scope_id. This means that all programs using IPv6 should be
1176 recompiled. Don't expect binary compatibility with previous glibc
1179 * various conversion modules for IBM character sets contributed by
1182 * IA-64 port by Jes Sorensen and HJ Lu.
1196 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1198 * New xdr functions are added; some rpc functions are now 64bit clean.
1200 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1202 * Fixed known incompatibilities with glibc 2.0.
1204 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1206 * Optimized a number of functions (especially the ELF dynamic loader).
1208 * Update timezone data files.
1210 * lots of charmaps corrections
1212 * some new locale definitions and charmaps
1217 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1218 conform to POSIX member type requirements. Symbol versions have been
1219 adjusted as needed within the library, and for direct use by applications,
1220 but there is potential for problems if third-party libraries use
1221 struct timeval as part of their interface. This does not present
1222 a problem for X and other "essential" system libraries.
1224 * An additional locale model to support C++ Standard Library locale
1225 model and probably more was implemented by Ulrich Drepper.
1227 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1230 * Miles Bader provided the `argp' function family to support hierachical
1231 command line argument parsing, layered on top of getopt.
1233 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1235 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1238 * scanf recognizes the %a and %A format for scanning floating point numbers.
1240 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1241 information and interfaces for the available integer types.
1243 * about 130 new math functions were added to implement the ISO C9x math
1246 * the new header <complex.h> contains definitions of the complex math
1247 functions from ISO C 9X.
1249 * the new header <tgmath.h> defines generic macros to use complex or
1250 real valued functions.
1252 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1254 * Andreas Jaeger provided a test suite for the math library.
1256 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1258 * Ulrich Drepper added character set conversion functions (iconv).
1260 * Optimized string functions have been added.
1262 * The localedata addon is now part of glibc.
1264 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1266 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1267 daemon for NSS (nscd).
1269 Missing a better place here are some numbers on improvements. Under
1270 Linux 2.1.125 un-tar-ing the kernel sources takes
1274 using local files 12.19s 6.88s 22.91s
1276 using NIS 13.92s 8.91s 26.34s
1278 using NIS & nscd 10.37s 7.34s 25.30s
1280 using NIS+ 27.57s 30.37s 640.46s
1282 using NIS+ & nscd 10.25s 7.83s 26.51s
1284 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1286 Keep in mind that non-namelookup related operations dominate above times.
1287 It was just a common complain that using NIS+ unpacking the kernel is
1290 [1] The old nscd implementation is not available anymore since it was
1291 distributed with glibc up to version 2.0.98 and thus is now replaced.
1293 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1295 * Mark Kettenis provided a Hesiod NSS module.
1297 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1298 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1300 * rcmd can now handle netgroups (Dick Streefland).
1302 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1305 * Support for the IPv6 protocol has been added to the socket API, as per the
1306 latest draft standards.
1308 * Support for Linux 2.2 has been added.
1310 * Interface changes relative to the latest 2.0.x release:
1311 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1312 addseverity NEW: Unix98
1313 alphasort64 NEW: LFS
1314 argp_err_exit_status NEW: argp, GNU ext
1315 argp_error NEW: argp, GNU ext
1316 argp_failure NEW: argp, GNU ext
1317 argp_help NEW: argp, GNU ext
1318 argp_parse NEW: argp, GNU ext
1319 argp_program_bug_address NEW: argp, GNU ext
1320 argp_program_version NEW: argp, GNU ext
1321 argp_program_version_hook NEW: argp, GNU ext
1322 argp_state_help NEW: argp, GNU ext
1323 argp_usage NEW: argp, GNU ext
1324 authdes_create NEW: Secure RPC
1325 authdes_getucred NEW: Secure RPC
1326 authdes_pk_create NEW: Secure RPC
1327 backtrace NEW: GNU ext.
1328 backtrace_symbols NEW: GNU ext.
1329 backtrace_symbols_fd NEW: GNU ext.
1331 cacosf NEW: ISO C 9x
1332 cacosh NEW: ISO C 9x
1333 cacoshf NEW: ISO C 9x
1334 cacoshl NEW: ISO C 9x
1335 cacosl NEW: ISO C 9x
1342 casinf NEW: ISO C 9x
1343 casinh NEW: ISO C 9x
1344 casinhf NEW: ISO C 9x
1345 casinhl NEW: ISO C 9x
1346 casinl NEW: ISO C 9x
1348 catanf NEW: ISO C 9x
1349 catanh NEW: ISO C 9x
1350 catanhf NEW: ISO C 9x
1351 catanhl NEW: ISO C 9x
1352 catanl NEW: ISO C 9x
1353 cbc_crypt NEW: Secure RPC
1357 ccoshf NEW: ISO C 9x
1358 ccoshl NEW: ISO C 9x
1364 cimagf NEW: ISO C 9x
1365 cimagl NEW: ISO C 9x
1366 clearerr_locked REMOVED
1367 clntunix_create NEW: sunrpc ext
1369 clog10 NEW: ISO C 9x
1370 clog10f NEW: ISO C 9x
1371 clog10l NEW: ISO C 9x
1381 cprojf NEW: ISO C 9x
1382 cprojl NEW: ISO C 9x
1384 crealf NEW: ISO C 9x
1385 creall NEW: ISO C 9x
1390 csinhf NEW: ISO C 9x
1391 csinhl NEW: ISO C 9x
1394 csqrtf NEW: ISO C 9x
1395 csqrtl NEW: ISO C 9x
1399 ctanhf NEW: ISO C 9x
1400 ctanhl NEW: ISO C 9x
1402 des_setparity NEW: Secure RPC
1403 ecb_crypt NEW: Secure RPC
1404 endutxent NEW: Unix98
1406 exp10f NEW: ISO C 9x
1407 exp10l NEW: ISO C 9x
1411 fattach NEW: STREAMS
1412 fdetach NEW: STREAMS
1416 feclearexcept NEW: ISO C 9x
1417 fegetenv NEW: ISO C 9x
1418 fegetexceptflag NEW: ISO C 9x
1419 fegetround NEW: ISO C 9x
1420 feholdexcept NEW: ISO C 9x
1422 feraiseexcept NEW: ISO C 9x
1423 ferror_locked REMOVED
1424 fesetenv NEW: ISO C 9x
1425 fesetexceptflag NEW: ISO C 9x
1426 fesetround NEW: ISO C 9x
1427 fetestexcept NEW: ISO C 9x
1428 feupdateenv NEW: ISO C 9x
1429 fflush_locked REMOVED
1433 fgets_unlocked NEW: GNU ext.
1434 fileno_locked REMOVED
1446 fputc_locked REMOVED
1447 fputs_unlocked NEW: GNU ext.
1448 fread_unlocked NEW: GNU ext.
1453 fstatvfs NEW: Unix98
1457 ftruncate64 NEW: LFS
1459 fwrite_unlocked NEW: GNU ext.
1460 gai_strerror NEW: IPv6
1464 getchar_locked REMOVED
1466 getdate_err NEW: Unix98
1467 getdate_r NEW: GNU ext.
1469 getnameinfo NEW: IPv6
1470 getnetname NEW: Secure RPC
1471 getpmsg NEW: STREAMS
1472 getpt NEW: Unix98 PTY
1473 getrlimit64 NEW: LFS
1474 getutxent NEW: Unix98
1475 getutxid NEW: Unix98
1476 getutxline NEW: Unix98
1477 glob64 NEW: GNU ext.
1478 globfree64 NEW: GNU ext.
1479 gnu_get_libc_release NEW: GNU ext.
1480 gnu_get_libc_version NEW: GNU ext.
1481 grantpt NEW: Unix98 PTY
1482 host2netname NEW: Secure RPC
1484 iconv_close NEW: iconv
1485 iconv_open NEW: iconv
1486 if_freenameindex NEW: IPv6
1487 if_indextoname NEW: IPv6
1488 if_nameindex NEW: IPv6
1489 if_nametoindex NEW: IPv6
1490 in6addr_any NEW: IPv6
1491 in6addr_loopback NEW: IPv6
1492 inet6_isipv4mapped NEW: IPv6
1493 isastream NEW: STREAMS
1494 iswblank NEW: GNU ext.
1495 key_decryptsession NEW: Secure RPC
1496 key_decryptsession_pk NEW: Secure RPC
1497 key_encryptsession NEW: Secure RPC
1498 key_encryptsession_pk NEW: Secure RPC
1499 key_gendes NEW: Secure RPC
1500 key_get_conv NEW: Secure RPC
1501 key_secretkey_is_set NEW: Secure RPC
1502 key_setnet NEW: Secure RPC
1503 key_setsecret NEW: Secure RPC
1504 llrint NEW: ISO C 9x
1505 llrintf NEW: ISO C 9x
1506 llrintl NEW: ISO C 9x
1507 llround NEW: ISO C 9x
1508 llroundf NEW: ISO C 9x
1509 llroundl NEW: ISO C 9x
1514 lrintf NEW: ISO C 9x
1515 lrintl NEW: ISO C 9x
1516 lround NEW: ISO C 9x
1517 lroundf NEW: ISO C 9x
1518 lroundl NEW: ISO C 9x
1520 makecontext NEW: Unix98
1521 mempcpy NEW: GNU ext.
1524 modify_ldt NEW: kernel
1528 nearbyint NEW: ISO C 9x
1529 nearbyintf NEW: ISO C 9x
1530 nearbyintl NEW: ISO C 9x
1531 netname2host NEW: Secure RPC
1532 netname2user NEW: Secure RPC
1533 nexttoward NEW: ISO C 9x
1534 nexttowardf NEW: ISO C 9x
1535 nexttowardl NEW: ISO C 9x
1539 passwd2des NEW: Secure RPC
1541 pow10f NEW: GNU ext.
1542 pow10l NEW: GNU ext.
1545 printf_size NEW: GNU ext.
1546 printf_size_info NEW: GNU ext.
1547 profil_counter REMOVED
1548 pthread_mutexattr_getkind_np REPLACED
1549 pthread_mutexattr_setkind_np REPLACED
1550 ptsname NEW: Unix98 PTY
1551 ptsname_r NEW: Unix98 PTY
1553 putchar_locked REMOVED
1554 putgrent NEW: GNU ext.
1556 putpmsg NEW: STREAMS
1557 pututxline NEW: Unix98
1561 readdir64_r NEW: LFS
1562 remquo NEW: ISO C 9x
1563 remquof NEW: ISO C 9x
1564 remquol NEW: ISO C 9x
1566 roundf NEW: ISO C 9x
1567 roundl NEW: ISO C 9x
1569 scalbln NEW: ISO C 9x
1570 scalblnf NEW: ISO C 9x
1571 scalblnl NEW: ISO C 9x
1573 sendfile NEW: kernel
1574 setcontext NEW: Unix98
1575 setrlimit64 NEW: LFS
1576 setutxent NEW: Unix98
1578 sigignore NEW: Unix98
1579 sigqueue NEW: POSIX.1b
1580 sigrelse NEW: Unix98
1581 sigset NEW: POSIX.1b
1582 sigtimedwait NEW: POSIX.1b
1583 sigwaitinfo NEW: POSIX.1b
1584 sincos NEW: GNU ext.
1585 sincosf NEW: GNU ext.
1586 sincosl NEW: GNU ext.
1590 strcasestr NEW: GNU ext.
1591 strtoimax NEW: ISO C 9x
1592 strtoumax NEW: ISO C 9x
1593 strverscmp NEW: GNU ext.
1594 svcauthdes_stats NEW: Secure RPC
1595 svcunix_create NEW: sunrpc etx
1596 svcunixfd_create NEW: sunrpc ext
1597 swapcontext NEW: Unix98
1598 tcgetsid NEW: Unix98 PTY
1599 tdestroy NEW: GNU ext.
1600 tgamma NEW: ISO C 9x
1601 tgammaf NEW: ISO C 9x
1602 tgammal NEW: ISO C 9x
1606 truncf NEW: ISO C 9x
1607 truncl NEW: ISO C 9x
1609 unlockpt NEW: Unix98 PTY
1610 updwtmpx NEW: Unix98
1611 user2netname NEW: Secure RPC
1612 utmpxname NEW: Unix98
1613 versionsort NEW: GNU ext.
1614 versionsort64 NEW: GNU ext.
1616 wcscasecmp NEW: GNU ext.
1617 wcsncasecmp NEW: GNU ext.
1618 wcsnlen NEW: GNU ext.
1619 wcstoimax NEW: ISO C 9x
1620 wcstoll NEW: ISO C 9x
1621 wcstoull NEW: ISO C 9x
1622 wcstoumax NEW: ISO C 9x
1624 wordexp NEW: POSIX.2
1625 wordfree NEW: POSIX.2
1626 write_profiling REMOVED
1627 xdecrypt NEW: Secure RPC
1628 xdr_authdes_cred NEW: Secure RPC
1629 xdr_authdes_verf NEW: Secure RPC
1630 xdr_cryptkeyarg NEW: Secure RPC
1631 xdr_cryptkeyarg2 NEW: Secure RPC
1632 xdr_cryptkeyres NEW: Secure RPC
1633 xdr_getcredres NEW: Secure RPC
1634 xdr_key_netstarg NEW: Secure RPC
1635 xdr_key_netstres NEW: Secure RPC
1636 xdr_keybuf NEW: Secure RPC
1637 xdr_keystatus NEW: Secure RPC
1638 xdr_netnamestr NEW: Secure RPC
1639 xdr_sizeof NEW: Secure RPC
1640 xdr_unixcred NEW: sunrpc ext
1641 xencrypt NEW: Secure RPC
1642 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1653 * inet_ntoa is thread-safe
1655 * updwtmp is moved from libutil to libc
1657 * rewrite of cbrt function
1659 * update of timezone data
1673 * add atoll function
1675 * fix complex problems in Berkeley DB code
1677 * fix math functions
1681 * fixed lots of header problems (especially Linux/GNU specific)
1683 * dynamic loader preserves all registers
1685 * Roland McGrath provided support for handling of auxiliary objects in
1686 the ELF dynamic loader.
1688 * support for parallel builds is improved
1692 * GNU extensions are no longer declared by default. To enable them you
1693 must define the macro `_GNU_SOURCE' in your program or compile with
1696 * The library has changed from using GNU ld symbol aliases to using weak
1697 symbols where available. The ELF object file format supports weak
1698 symbols; GNU ld also supports weak symbols in the a.out format. (There
1699 is also now support for other GNU ld extensions in ELF. Use the
1700 `--with-elf' option to configure to indicate you have ELF, and
1701 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1702 of many files which contained only symbol aliases, reducing the size of
1703 the source and the compiled library; many other files were renamed to
1704 less cryptic names previously occupied by the symbol alias files.
1705 There is a new header file <elf.h> for programs which operate on
1706 files in the ELF format.
1708 * Converted to Autoconf version 2, so `configure' has more options.
1709 Run `configure --help' to see the details.
1711 * The library can now be configured to build profiling, highly-optimized
1712 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1713 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1714 `configure' enable building these extra libraries. The shared library is
1715 built by default when using both ELF and GNU ld. When shared libraries
1716 are enabled, the new library `-ldl' is available for arbitrary run-time
1717 loading of shared objects; its interface is defined in <dlfcn.h>. The
1718 new header file <link.h> gives access to the internals of the run-time
1719 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1720 application of same name on other systems and it provides information
1721 about dynamically linked binaries.
1723 * The C library now provides the run-time support code for profiling
1724 executables compiled with `-pg'. Programs can control the profiling code
1725 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1726 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1727 the support for this file format was contributed by David Mosberger-Tang.
1729 * The math code has been replaced with a math library based on fdlibm from
1730 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1731 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1732 functions. The math functions now reside in a separate library, so
1733 programs using them will need to use `-lm' their linking commands.
1735 * John C. Bowman contributed optimized ix87 assembler inline functions.
1737 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1738 mechanism similar to that found in Solaris 2. This is now used for the
1739 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1740 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1741 file controls what services are used for each individual database. This
1742 works by loading shared libraries with names specified in `nsswitch.conf',
1743 so service modules can be changed or added at any time without even
1744 relinking any program. Currently there are the file, db, and NIS based
1745 NSS services available.
1747 * The new functions `strtoq' and `strtouq' parse integer values from
1748 strings, like `strtol' and `strtoul', but they return `long long int' and
1749 `unsigned long long int' values, respectively (64-bit quantities).
1751 * The new functions `strtof' and `strtold' parse floating-point values from
1752 strings, like `strtod', but they return `float' and `long double' values,
1753 respectively (on some machines `double' and `long double' are the same).
1755 * Ulrich Drepper has contributed new implementations of the floating-point
1756 printing and reading code used in the `printf' family of functions and
1757 `strtod', `strtof', and `strtold'. These new functions are perfectly
1758 accurate, and much faster than the old ones.
1760 * The implementation of the POSIX locale model was completely rewritten by
1761 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1762 to compile the POSIX locale definition.
1764 * The former dummy implementations of the strcoll and strxfrm function are
1765 now replaced by fully functional code contributed by Ulrich Drepper. The
1766 collation information comes from the POSIX locale definitions.
1768 * The new header <langinfo.h> defines an interface for accessing
1769 various locale-dependent data (using the locale chosen with `setlocale').
1771 * Ulrich Drepper has contributed a new suite of functions for operation on
1772 wide-character and multibyte-character strings, in <wchar.h>;
1773 and classification and case conversion of wide characters, in <wctype.h>.
1774 These new functions are conforming to the ISO C, Amendement 1 specification.
1776 * There is now a second implementation of the standard I/O library available.
1777 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1778 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1780 * You can now use positional parameter specifications in format strings
1781 for the `printf' and `scanf' families of functions. For example,
1782 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1783 ``Number 6, Mr Jones''. This is mainly useful when providing different
1784 format strings for different languages, whose grammars may dictate
1785 different orderings of the values being printed. To support this
1786 feature, the interface for `register_printf_handler' has changed; see
1787 the header file <printf.h> for details.
1789 * The `printf' and `scanf' families of functions now understand a new
1790 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1791 to group numbers as indicated by the locale; for `scanf' and friends, this
1792 says to accept as valid only a number with all the proper grouping
1793 separators in the right places. In the default "C" locale, numbers are
1794 not grouped; but locales for specific countries will define the usual
1795 conventions (i.e. separate thousands with `,' in the US locale).
1797 * The pgrp functions have been regularized, slightly incompatibly but much
1798 less confusingly. The core functions are now `getpgid' and `setpgid',
1799 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1800 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1801 provided for compatibility. There is no longer an incompatible `getpgrp'
1802 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1804 * The new header file <fts.h> and suite of functions simplify programs that
1805 operate on directory trees. This code comes from 4.4 BSD.
1807 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1808 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1809 NSS scheme used in glibc.
1811 * There is a new malloc debugging hook `__memalign_hook'.
1813 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1814 `unsigned int' in <sys/types.h>. These are for compatibility only and
1815 their use is discouraged.
1817 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1818 done differently, so that it works even without GNU ld.
1820 * New function `euidaccess' checks allowed access to a file like `access',
1821 but using the effective IDs instead of the real IDs.
1823 * The time zone data files have been updated for the latest and greatest
1824 local time conventions of the countries of the world.
1826 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1829 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1830 for formatting floating-point numbers. They are provided only for
1831 compatibility; new programs should use `sprintf' instead. There are
1832 also equivalent function for the `long double' floating-point type and
1833 all functions also exist in a reentrant form.
1835 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1836 functions for maintaining the login-record files (primarily of use to
1837 system programs such as `login'), and convenient functions for
1838 allocating and initializing a pseudo-terminal (pty) device.
1840 * Ulrich Drepper has contributed new support for System V style
1841 shared memory and IPC on systems that support it.
1843 * Ulrich Drepper has contributed several miscellaneous new functions found
1844 in System V: The `hsearch' family of functions provide an effective
1845 implementation of hash tables; `a64l' and `l64a' provide a very simple
1846 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1849 * Ulrich Drepper has contributed new reentrant counterparts for the
1850 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1852 * Ulrich Drepper has contributed new, highly-optimized versions of several
1853 string functions for the i486/Pentium family of processors.
1855 * Ulrich Drepper has updated the Linux-specific code, based largely
1856 on work done in Hongjiu Lu's version of GNU libc for Linux.
1857 The GNU library now supports Linux versions 2.0.10 and later,
1858 using the ELF object file format (i[3456]86-*-linux).
1860 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1862 * David Mosberger-Tang and Richard Henderson have ported the C library
1863 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1864 dynamic linking support for ELF/Alpha.
1866 * Richard Henderson contributed several Alpha optimized assembler function
1867 for arithmetic and string handling.
1869 * Ulrich Drepper has contributed a new set of message catalog functions to
1870 support multiple languages using the <libintl.h> interface, for use with
1871 his new package GNU gettext. Translation volunteers have contributed
1872 catalogs of the library's messages in Spanish, German, and Korean.
1874 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1875 program and the `catgets' function for reading the catalog files it
1876 creates. (The <libintl.h> interface is preferred; we include the
1877 <nl_types.h> interface using `catgets' only for source compatibility with
1878 programs already written to use it.)
1880 * New header file <values.h> gives SVID-compatible names for <limits.h>
1883 * Various new macros, declarations, and small header files for compatibility
1886 * New function `group_member' is a convenient way to check if a process has
1887 a given effective group ID.
1889 * When using GCC 2.7 and later, the socket functions are now declared in a
1890 special way so that passing an argument of type `struct sockaddr_in *',
1891 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1892 `struct sockaddr *' type, does not generate a type-clash warning.
1894 * New function `error' declared in header file <error.h> is a convenient
1895 function for printing error messages and optionally exiting; this is the
1896 canonical function used in GNU programs. The new functions `err', `warn',
1897 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1898 doing the same thing.
1900 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1901 POSIX.2 `glob' function to do ~ and {...} expansion.
1903 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1904 `clearenv' which is used in POSIX.9 is also available.
1906 * New function `getsid' returns session ID number on systems that support it.
1908 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1909 files <db.h> and <mpool.h> provide a rich set of functions for several
1910 types of simple databases stored in memory and in files, and <ndbm.h> is
1911 an old `ndbm'-compatible interface using the `db' functions. Link with
1912 `-ldb' to get these functions.
1914 * New macro `strdupa' copies a string like `strdup', but uses local stack
1915 space from `alloca' instead of dynamic heap space from `malloc'.
1917 * New function `strnlen' is like `strlen' but searches only a given maximum
1918 number of characters for the null terminator. `stpncpy', `strndup' and
1919 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1922 * New function `statfs' in header <sys/statfs.h>.
1924 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1925 provide convenient functions for operating on blocks of null-terminated
1928 * A new suite of functions in <utmp.h> handle all the details of reading
1929 and writing the utmp file.
1931 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1934 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1935 completely POSIX compliant and also implemented the extended functionality
1936 to handle alternate digit representation and alternate era date formats.
1938 * Ulrich Drepper provided an implementation of the `strptime' function
1939 defined in XPG4.2 which transforms a string into a `struct tm' value.
1941 * Paul Eggert provided the tzselect shell script as part of the timezone
1942 code. The shell script makes it easy to select the correct timezone
1945 * The implementation of the malloc family of functions is completely replaced
1946 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1947 The implementation uses the mmap function (if available) and it is
1948 optimized for the use in multi threaded programs.
1950 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1951 functions. This new functionality is usable by specifying a special
1952 salt string and it is compatible with implementation on *BSD systems.
1954 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1955 `getsubopt' to handle second level command line options, `bsd_signal'
1956 to access BSD style `signal' functionality, the obsolete `regexp' style
1959 * the `lchown' function is available on system which support this
1962 * The implementation of the shadow password handling function was contributed
1965 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1967 * POSIX.1g support was added. The <sys/select.h> header is available,
1968 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1969 implementation of `getaddrinfo'.
1973 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1975 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1976 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1978 * The new function `daemon' from 4.4 BSD is useful for server programs that
1979 want to put themselves in the background.
1981 * Joel Sherrill has contributed support for several standalone boards that
1982 run without an operating system.
1984 * `printf', `scanf' and friends now accept a `q' type modifier for long
1985 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1987 * All of the code taken from BSD (notably most of the math and networking
1988 routines) has been updated from the BSD 4.4-Lite release.
1990 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1992 * The new functions `getdomainname' and `setdomainname' fetch or change the
1993 YP/NIS domain name. These are system calls which exist on systems which
1996 * The time zone data files have been updated for the latest international
1999 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2000 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2004 * The C library now includes support for Sun RPC, from Sun's free
2005 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2006 are included. (There is still no support for YP.)
2008 * Tom Quinn has contributed a port of the C library to SGI machines running
2009 Irix 4 (mips-sgi-irix4).
2011 * The new `lockf' function is a simplified interface to the locking
2012 facilities of `fcntl', included for compatibility.
2014 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2016 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2018 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2021 * The error message printed by `assert' for a failed assertion now includes
2022 the name of the program (if using GNU ld) and the name of the calling
2023 function (with versions of GCC that support this).
2025 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2027 * The library now includes the <sys/mman.h> header file and memory
2028 management functions `mmap', `munmap', `mprotect', `msync', and
2029 `madvise', on systems that support those facilities.
2031 * The interface for `mcheck' has changed slightly: the function called to
2032 abort the program when an allocation inconsistency is detected now takes
2033 an argument that indicates the type of failure. The new function
2034 `mprobe' lets you request a consistency check for a particular block at
2035 any time (checks are normally done only when you call `free' or `realloc'
2038 * It is now possible to easily cross-compile the C library, building on one
2039 system a library to run on another machine and/or operating system. All
2040 you need to do is set the variable `HOST_CC' in `configparms' to the
2041 native compiler for programs to run on the machine you are building on (a
2042 few generator programs are used on Unix systems); set `CC' to the
2045 * The new function `fexecve' (only implemented on the GNU system) executes
2046 a program file given a file descriptor already open on the file.
2050 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2051 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2053 * You can set the variable `libprefix' in `configparms' to specify a prefix
2054 to be prepended to installed library files; this makes it easy to install
2055 the GNU C library to be linked as `-lgnuc' or whatever.
2057 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2058 copies a limited number of characters from a string, and returns the
2059 address of the last character written.
2061 * You no longer need to check for whether the installed `stddef.h' is
2062 compatible with the GNU C library. configure now checks for you.
2064 * You can now define a per-stream `fileno' function to convert the
2065 stream's cookie into an integral file descriptor.
2067 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2068 allocates zero bytes of storage, and returns a unique pointer which
2069 you can pass to `realloc' or `free'. The behavior is undefined if
2070 you dereference this pointer.
2072 * The C library now runs on Sony NEWS m68k machines running either
2073 NewsOS 3 or NewsOS 4.
2075 * The new `syscall' function is a system-dependent primitive function
2076 for invoking system calls. It has the canonical behavior on Unix
2077 systems, including unreliable return values for some calls (such as
2078 `pipe', `fork' and `getppid').
2080 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2081 to `EAGAIN', which is the preferred name. On systems whose kernels
2082 use two distinct codes, the C library now translates EWOULDBLOCK to
2083 EAGAIN in every system call function.
2087 * The GNU C Library Reference Manual is now distributed with the library.
2088 `make dvi' will produce a DVI file of the printed manual.
2089 `make info' will produce Info files that you can read on line using C-h i
2090 in Emacs or the `info' program.
2091 Please send comments on the manual to bug-glibc-manual@gnu.org.
2093 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2095 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2097 * Jason Merrill has contributed a port to the Sequent Symmetry running
2098 Dynix version 3 (i386-sequent-dynix).
2100 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2101 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2103 * New function `memory_warnings' lets you arrange to get warnings when
2104 malloc is running out of memory to allocate, like Emacs gives you.
2106 * The C library now contains the relocating allocator used in Emacs 19 for
2107 its editing buffers. This allocator (ralloc) minimizes allocation
2108 overhead and fragmentation by moving allocated regions around whenever it
2109 needs to. You always refer to a ralloc'd region with a "handle" (a
2110 pointer to a pointer--an object of type `void **').
2112 * There is a new `printf' format: `%m' gives you the string corresponding
2113 to the error code in `errno'.
2115 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2116 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2117 pass, the `a' modifier says to fill in a `char **' you pass with a
2120 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2121 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2122 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2124 * `mkstemp' is a traditional Unix function to atomically create and open a
2125 uniquely-named temporary file.
2129 * The standard location for the file that says what the local timezone is
2130 has changed again. It is now `/usr/local/etc/localtime' (or more
2131 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2133 * The distribution no longer contains any files with names longer than 14
2136 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2137 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2139 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2143 * The configuration process has changed quite a bit. The `configure'
2144 script is now used just like the configuration scripts for other GNU
2145 packages. The `sysdeps' directory hierarchy is much rearranged.
2146 The file `INSTALL' explains the new scheme in detail.
2148 * The header files no longer need to be processed into ANSI C and
2149 traditional C versions. There is just one set of files to install, and
2150 it will work with ANSI or old C compilers (including `gcc -traditional').
2152 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2153 MIPS DECStation running Ultrix 4.
2155 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2156 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2157 made itself into a shared library.
2159 * Yet further improved support for the i386, running 4.3 BSD-like systems
2160 (such as Mach 3 with the Unix single-server), or System V.
2162 * New function `strncasecmp' to do case-insensitive string comparison
2163 with limited length.
2165 * New function `strsep' is a reentrant alternative to `strtok'.
2167 * New functions `scandir' and `alphasort' for searching directories.
2169 * New function `setenv' is a better interface to `putenv'.
2171 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2172 function for traversing a directory tree.
2174 * The GNU obstack package is now also part of the C library.
2175 The new function `open_obstack_stream' creates a stdio stream that
2176 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2177 formatted output directly to an obstack.
2179 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2180 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2182 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2184 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2185 things to your strings.
2187 * There are some new test programs: test-fseek, testmb, and testrand.
2189 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2190 These ports are not finished, but are a good starting place for really
2191 supporting those systems.
2193 * `/etc/localtime' is now the standard location for the file that says what
2194 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2195 This follows the general principle that `/etc' is the place for all local
2196 configuration files.
2198 * The C library header files now use `extern "C"' when used by the C++
2199 compiler, so the C library should now work with C++ code.
2201 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2202 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2205 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2206 function which uses the `merge sort' algorithm, and is said to be
2207 significantly faster than the old GNU `qsort' function. Merge sort is
2208 now the standard `qsort' function. The new algorithm can require a lot
2209 of temporary storage; so, the old sorting function is called when the
2210 required storage is not available.
2212 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2213 provides the Unix `crypt' function, plus some other entry points.
2215 * The code and header files taken from 4.4 BSD have been updated with the
2216 latest files released from Berkeley.
2218 ----------------------------------------------------------------------
2219 Copyright information:
2221 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2223 Permission is granted to anyone to make or distribute verbatim copies
2224 of this document as received, in any medium, provided that the
2225 copyright notice and this permission notice are preserved,
2226 thus giving the recipient permission to redistribute in turn.
2228 Permission is granted to distribute modified versions
2229 of this document, or of portions of it,
2230 under the above conditions, provided also that they
2231 carry prominent notices stating who last changed them.
2234 version-control: never
projects / thirdparty / glibc.git / blob