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:
12 156, 387, 431, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 7003, 9954,
13 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12986, 13028, 13982,
14 13985, 14029, 14032, 14120, 14143, 14155, 14547, 14699, 14752, 14876,
15 14910, 15004, 15048, 15073, 15089, 15128, 15218, 15268, 15277, 15308,
16 15362, 15374, 15400, 15425, 15427, 15483, 15522, 15531, 15532, 15593,
17 15601, 15608, 15609, 15610, 15632, 15640, 15670, 15672, 15680, 15681,
18 15723, 15734, 15735, 15736, 15748, 15749, 15754, 15760, 15763, 15764,
19 15797, 15799, 15825, 15843, 15844, 15846, 15847, 15849, 15855, 15856,
20 15857, 15859, 15867, 15886, 15887, 15890, 15892, 15893, 15895, 15897,
21 15901, 15905, 15909, 15915, 15917, 15919, 15921, 15923, 15939, 15941,
22 15948, 15963, 15966, 15985, 15988, 15997, 16032, 16034, 16036, 16037,
23 16038, 16041, 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112,
24 16143, 16144, 16146, 16150, 16151, 16153, 16167, 16172, 16195, 16214,
25 16245, 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337,
28 * Slovenian translations for glibc messages have been contributed by the
29 Translation Project's Slovenian team of translators.
31 * The public headers no longer use __unused nor __block. This change is to
32 support compiling programs that are derived from BSD sources and use
33 __unused internally, and to support compiling with Clang's -fblock
34 extension which uses __block.
36 * CVE-2012-4412 The strcoll implementation caches indices and rules for
37 large collation sequences to optimize multiple passes. This cache
38 computation may overflow for large collation sequences and may cause a
39 stack or buffer overflow. This is now fixed to use a slower algorithm
40 which does not use a cache if there is an integer overflow.
42 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
43 rules for large collation sequences to optimize multiple passes and falls
44 back to alloca if malloc fails, resulting in a possible stack overflow.
45 The implementation now falls back to an uncached collation sequence lookup
48 * CVE-2013-4788 The pointer guard used for pointer mangling was not
49 initialized for static applications resulting in the security feature
50 being disabled. The pointer guard is now correctly initialized to a
51 random value for static applications. Existing static applications need
52 to be recompiled to take advantage of the fix (bug 15754).
54 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
55 to the d_name member of struct dirent, or omit the terminating NUL
56 character. (Bugzilla #14699).
58 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
59 aligned_alloc functions could allocate too few bytes or corrupt the
60 heap when passed very large allocation size values (Bugzilla #15855,
63 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
64 for AF_INET6 has been fixed (Bugzilla #16072).
66 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
67 pap_CW, quz_PE, the_NP.
69 * Substantially revised locales: gd_GB, ht_HT
71 * The LC_ADDRESS field was updated to support country_car for almost all
74 * ISO 1427 definitions were updated.
76 * ISO 3166 definitions were updated.
78 * The localedef utility now supports --big-endian and --little-endian
79 command-line options to generate locales for a different system from that
80 for which the C library was built.
82 * Binary locale files now only depend on the endianness of the system for
83 which they are generated and not on other properties of that system. As a
84 consequence, binary files generated with new localedef may be incompatible
85 with old versions of the GNU C Library, and binary files generated with
86 old localedef may be incompatible with this version of the GNU C Library,
87 in the following circumstances:
89 + Locale files may be incompatible on m68k systems.
91 + Locale archive files (but not separate files for individual locales) may
92 be incompatible on systems where plain "char" is signed.
94 * The configure option --disable-versioning has been removed. Builds with
95 --disable-versioning had not worked for several years.
97 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
98 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
100 * SystemTap probes for malloc have been introduced.
102 * Support for powerpc64le has been added.
104 * The soft-float powerpc port now supports e500 processors.
106 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
108 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
109 set of header declarations that are enabled by default, even when other
110 feature test macros or compiler options such as -std=c99 would otherwise
111 disable some of those declarations.
113 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
114 conflict with POSIX. The libbsd-compat library (which was a dummy library
115 that did nothing) has also been removed.
119 * The following bugs are resolved with this release:
121 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
122 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
123 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
124 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
125 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
126 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
127 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
128 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
129 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
130 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
131 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
132 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
133 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
136 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
137 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
138 Distributions can re-enable building and using pt_chown via the new configure
139 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
140 considerable security risks and should only be used if the distribution
141 understands and accepts the risks.
143 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
146 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
147 fixed (Bugzilla #15330).
149 * Add support for calling C++11 thread_local object destructors on thread
150 and program exit. This needs compiler support for offloading C++11
151 destructor calls to glibc.
153 * Improved worst case performance of libm functions with double inputs and
156 * Support for priority inherited mutexes in pthread condition variables on
157 non-x86 architectures.
159 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
161 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
163 * Optimized string functions for ARM. Implemented by Will Newton and
166 * Optimized libm functions for SPARC. Implemented by David S. Miller.
168 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
171 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
172 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
174 * Added a benchmark framework to track performance of functions in glibc.
176 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
177 It is based on draft TS 18661 and currently enabled as a GNU extension.
179 * On Linux, the clock function now uses the clock_gettime system call
180 for improved precision, rather than old times system call.
182 * Added support for version-3 tz format files. This is needed when using
183 the tz database release 2013e or later, and affects a few unusual cases --
184 currently only TZ='America/Godthab' for time stamps after 2037.
186 * Added new API functions pthread_getattr_default_np and
187 pthread_setattr_default_np to get and set the default pthread
188 attributes of a process.
190 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
191 This may improve lock scaling of existing programs on TSX capable systems.
192 When the --enable-lock-elision=yes parameter is specified at configure
193 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
196 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
197 availability). Implemented by Ryan S. Arnold.
199 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
203 * The following bugs are resolved with this release:
205 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
206 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
207 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
208 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
209 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
210 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
211 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
212 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
213 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
214 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
215 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
216 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
217 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
218 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
219 14879, 14889, 14893, 14898, 14914.
221 * Optimization of memcpy for MIPS.
223 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
224 EMFILE has been fixed (Bugzilla #14889).
226 * The add-on ports collection is now distributed in the "ports" subdirectory
227 of the main GNU C Library distribution, rather than separately.
229 * Port to ARM AArch64 contributed by Linaro.
231 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
232 Optimized versions of memcpy, memset, and memcmp added for System z10 and
234 Implemented by Andreas Krebbel.
236 * The new function secure_getenv allows secure access to the environment,
237 returning NULL if running in a SUID/SGID process. This function replaces
238 the internal function __secure_getenv.
240 * SystemTap static probes have been added into the dynamic linker.
241 Implemented by Gary Benson.
243 * Optimizations of string functions strstr, strcasestr and memmem.
244 Implemented by Maxim Kuvyrkov.
246 * The minimum Linux kernel version that this version of the GNU C Library
247 can be used with is 2.6.16.
249 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
250 powerpc POWER7. Implemented by Will Schmidt.
252 * New configure option --disable-nscd builds the C library such that it
253 never attempts to contact the Name Service Caching Daemon (nscd).
254 New configure option --disable-build-nscd avoids building nscd itself;
255 this is the default if --disable-nscd is used.
257 * Improved support for cross-compilation, including cross-testing and
258 bootstrap builds without a previously built glibc.
260 * Several testsuite tests are now able to test multiple IFUNC variants of an
261 interface, rather than just testing the one that would be chooen by
264 * New configure options --with-bugurl and --with-pkgversion, for
265 distributors to use to embed their bug-reporting and package version
266 information in --help and --version output.
268 * The ttyname and ttyname_r functions on Linux now fall back to searching for
269 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
270 allows creation of chroots without the procfs mounted on /proc.
272 * The `crypt' function now fails if passed salt bytes that violate the
273 specification for those values. On Linux, the `crypt' function will
274 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
275 enabled, and fail on encrypted strings using the MD5 or DES algorithm
276 when the mode is enabled.
278 * The `clock_*' suite of functions (declared in <time.h>) is now available
279 directly in the main C library. Previously it was necessary to link with
280 -lrt to use these functions. This change has the effect that a
281 single-threaded program that uses a function such as `clock_gettime' (and
282 is not linked with -lrt) will no longer implicitly load the pthreads
283 library at runtime and so will not suffer the overheads associated with
284 multi-thread support in other code such as the C++ runtime library.
286 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
291 * The following bugs are resolved with this release:
293 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
294 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
295 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
296 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
297 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
298 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
299 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
300 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
301 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
302 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
303 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
304 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
305 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
306 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
307 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
308 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
309 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
310 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
311 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
312 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
313 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
314 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
317 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
318 configuring glibc with:
319 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
320 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
321 Implemented by H.J. Lu.
325 + define static_assert
327 + do not declare gets
329 + declare at_quick_exit and quick_exit also for ISO C11
331 + aligned_alloc. NB: The code is deliberately allows the size parameter
332 to not be a multiple of the alignment. This is a moronic requirement
333 in the standard but it is only a requirement on the caller, not the
338 + uchar.h support added
340 + CMPLX, CMPLXF, CMPLXL added
342 Implemented by Ulrich Drepper.
344 * Support for the IA-64 has been moved to ports.
346 * Remove support for anything but ELF binary format
348 * Checking versions of poll, ppoll added.
349 Implemented by Ulrich Drepper.
351 * More generic and 64-bit performance optimizations to math functions.
352 Implemented by Ulrich Drepper.
354 * New configure option --enable-obsolete-rpc makes the deprecated RPC
355 headers and functions available at compile time as they were before
356 version 2.14. This option will be removed at some time in the future
357 after the TI-RPC library becomes fully sufficient for the needs of
358 existing applications.
360 * Compatibility code for Linux kernel versions before 2.4 has been removed.
361 Note that glibc is not expected to work with any Linux kernel version
364 * New header <sys/auxv.h> and function getauxval allowing easy access to
365 the AT_* key-value pairs passed from the Linux kernel. The header also
366 defines the HWCAP_* bits associated with the AT_HWCAP key.
368 * New locales: mag_IN
370 * New configure option --enable-systemtap builds SystemTap static probes
371 into libc for setjmp and longjmp and into libpthread for various operations.
372 So far the setjmp/longjmp probes and some of the libpthread probes are
373 provided only for i*86 and x86_64.
374 Implemented by Roland McGrath and Rayson Ho.
376 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
378 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
381 * More optimized functions for SPARC. Implemented by David S. Miller.
383 * Improved support for cross-compilation, especially bootstrap builds
384 without a previously built glibc.
386 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
387 Chris Metcalf from Tilera.
389 * Support for the old ARM ABI has been removed from ports. Only the EABI is
390 now supported for ARM processors.
392 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
393 as the name of the dynamic linker, to distinguish it from the
394 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
396 * Support for CRIS has been removed from ports.
398 * A new class of installed header has been documented for low-level
399 platform-specific functionality. PowerPC added the first instance with a
400 function to provide time base register access. Contributed by Tulio
401 Magno Quites Machado Filho.
403 * ix86 configurations now install header files that are consistent with
404 what x86-64 configurations install. These same header files can be used
405 for -m32, -m64, or -mx32 builds.
406 Contributed by H.J. Lu.
408 * Math library bug fixes. A thorough audit of all open math library bugs was
409 conducted by Joseph Myers. Significant progress was made on many math
410 library bugs resulting in more accurate exceptions and function results.
411 Many thanks to all those that contributed including Andreas Jaeger for his
412 patch review and work on the x87 trigonometric instruction issues.
414 * Timezone data is no longer installed. Timezone-related binaries and scripts
415 will continue to be installed. Users should obtain their timezone data from
416 their distribution provider or from the tzdata package at
417 <ftp://munnari.oz.au/pub/>.
421 * The following bugs are resolved with this release:
423 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
424 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
425 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
426 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
427 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
428 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
429 13484, 13506, 13515, 13523, 13524, 13538, 13540
431 * New program pldd to list loaded object of a process
432 Implemented by Ulrich Drepper.
434 * Add nss_db support back to glibc. No more dependency on Berkeley db
435 and support for initgroups lookups.
436 Implemented by Ulrich Drepper.
438 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
439 Contributed by HJ Lu.
441 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
442 Contributed by HJ Lu.
444 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
445 on x86-32 and x86-64.
446 Contributed by Liubov Dmitrieva.
448 * Optimized strchr and strrchr for SSE on x86-32.
449 Contributed by Liubov Dmitrieva.
451 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
452 for x86-64 and x86-32.
453 Contributed by Liubov Dmitrieva.
455 * New interfaces: scandirat, scandirat64
456 Implemented by Ulrich Drepper.
458 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
459 Implemented by Ulrich Drepper.
461 * nscd now also caches the netgroup database.
462 Implemented by Ulrich Drepper.
464 * Integrate libm with gcc's -ffinite-math-only option.
465 Implemented by Ulrich Drepper.
467 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
468 to math functions. Implemented by Ulrich Drepper.
470 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
471 Implemented by Ulrich Drepper.
473 * New Linux interfaces: process_vm_readv, process_vm_writev
475 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
476 Implemented by Ulrich Drepper.
478 * Optimized nearbyint and strcasecmp for PPC.
479 Implemented by Adhemerval Zanella.
481 * New locales: bho_IN, unm_US, es_CU, ta_LK
485 * The following bugs are resolved with this release:
487 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
488 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
489 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
490 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
491 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
492 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
493 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
494 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
495 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
496 12795, 12811, 12813, 12814, 12841
498 * The RPC implementation in libc is obsoleted. Old programs keep working
499 but new programs cannot be linked with the routines in libc anymore.
500 Programs in need of RPC functionality must be linked against TI-RPC.
501 The TI-RPC implementation is IPv6 enabled and there are other benefits.
503 Visible changes of this change include (obviously) the inability to link
504 programs using RPC functions without referencing the TI-RPC library and the
505 removal of the RPC headers from the glibc headers.
506 Implemented by Ulrich Drepper.
508 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
509 syncfs, setns, sendmmsg
511 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
512 yue_HK, lij_IT, mhr_RU
514 * New encodings: CP770, CP771, CP772, CP773, CP774
516 * New program sotruss to trace calls through PLTs
517 Implemented by Ulrich Drepper.
519 * The malloc hook implementation is marked deprecated and will be removed
520 from the default implementation in the next version. The design never
521 worked ever since the introduction of threads. Even programs which do
522 not create threads themselves can use multiple threads created internally.
526 * The following bugs are resolved with this release:
528 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
529 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
530 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
531 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
534 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
536 * POWER7 optimizations: memset, memcmp, strncmp
538 * New optimized string functions for x86-64: strnlen (SSE2),
539 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
540 Implemented by Ulrich Drepper.
544 * The following bugs are resolved with this release:
546 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
547 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
548 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
549 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
550 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
551 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
552 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
553 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
555 * New interfaces: pthread_getname_np, pthread_setname_np
557 * New Linux interface: recvmmsg
559 * STT_GNU_IFUNC implemented for Sparc by David Miller.
561 * The dynamic linker now recognizes supported ABI versions from the
562 EI_ABIVERSION field in the ELF header.
563 Implemented by Ulrich Drepper.
565 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
566 will not be used to fill in password fields in the passwd.byname replies.
567 Instead it is used to synthesize the shadow.byname table, should it be
568 missing. This is a useful mode in some installations involving Solaris.
569 Implemented by Ulrich Drepper.
571 * New locales: kok_IN, sq_MK, cv_RU
575 * The following bugs are resolved with this release:
577 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
578 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
579 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
580 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
581 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
582 10789, 10817, 10823, 10840, 10847
584 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
586 Implemented by Ulrich Drepper.
588 * Checking version of longjmp added that fails if an uninitialized stack
589 frame would be created. Implemented by Ulrich Drepper.
591 * STT_GNU_IFUNC is now supported in static executables.
592 Implemented by H.J. Lu.
594 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
596 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
597 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
598 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
599 Contributed by H.J. Lu.
601 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
602 Implemented by Ulrich Drepper.
604 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
606 Contributed by H.J. Lu.
608 * Support for fma instruction in AVX on x86-64.
609 Implemented by H.J. Lu and Ulrich Drepper.
611 * AVX support in x86-64 auditing support in ld.so.
612 Implemented by H.J. Lu.
614 * STB_GNU_UNIQUE support added.
615 Implemented by Ulrich Drepper.
617 * Implement second fallback mode for optimized DNS lookup for even more
618 broken environments. If two requests from the same port are not
619 handled correctly close the socket and open a new one before sending
620 the second request. The 'single-request-reopen' option in /etc/resolv.conf
621 can be used to select this mode right away, instead of rediscovering the
622 necessity is every process again.
623 Implemented by Ulrich Drepper.
625 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
626 Implemented by Adam Tkac.
628 * Optimized iconv conversions for S390x.
629 Implemented by Andreas Krebbel.
631 * Using condvars with PI mutexes is now more efficient due to kernel
632 support for requeueing to PI futexes. NPTL support added for x86-64.
633 Implemented by Ulrich Drepper.
635 * New locales: ps_AF, my_MM
639 * The following bugs are resolved with this release:
641 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
642 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
643 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
644 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
645 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
647 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
648 Implemented by Ulrich Drepper.
650 * New Linux interfaces: accept4, fallocate, fallocate64.
651 Implemented by Ulrich Drepper.
653 * Correct declarations of string function when used in C++ code. This
654 could lead to compile errors for invalid C++ code.
656 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
659 * New POSIX 2008 interface: psiginfo
660 Implemented by Ulrich Drepper.
662 * New ISO C++1x interfaces: quick_exit, at_quick_exit
663 Implemented by Ulrich Drepper.
665 * Support for selecting between multiple function definitions at runtime
666 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
668 * The libcrypt library can now use the hash function implementations in
669 NSS. Implemented by Ulrich Drepper.
671 * The malloc implementation can be compiled to be less memory efficient
672 but higher performing in multi-threaded programs.
673 Implemented by Ulrich Drepper.
675 * New locales: nan_TW@latin, ks_IN
677 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
678 Implemented by Ulrich Drepper.
680 * Extended printf hook support. It is possible to use user-defined types
681 and extend existing format specifiers.
682 Implemented by Ulrich Drepper.
684 * Handling for group shadow files has been added.
685 Implemented by Ulrich Drepper.
687 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
688 servers (the case, e.g., for some people using the built-in DNS
689 server in ADSL modems/routers). There is a once-per-process timeout
690 in case of a broken server. To avoid it, users can run nscd or put
691 'options single-request' in /etc/resolv.conf.
692 Implemented by Ulrich Drepper.
696 * The following bugs are resolved with this release:
698 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
699 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
700 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
701 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
702 6968, 6974, 6980, 6995, 7008, 7009, 7029
704 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
705 up at the same time. Implemented by Ulrich Drepper.
707 * TLS descriptors for LD and GD on x86 and x86-64.
708 Implemented by Alexandre Oliva.
710 * getaddrinfo now handles DCCP and UDPlite.
711 Implemented by Ulrich Drepper.
713 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
714 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
715 Implemented by Ulrich Drepper.
717 * New implementation of memmem, strstr, and strcasestr which is O(n).
718 Implemented by Eric Blake.
720 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
722 * Implement "e" option for popen to open file descriptor with the
723 close-on-exec flag set. Implemented by Ulrich Drepper.
725 * Implement "b" mode for fmemopen. In this mode writes writes don't
726 implicitly add a NUL byte and seeks from the end of the buffer really
727 use the buffer end, not the string length as the basis.
728 Implemented by Ulrich Drepper.
730 * Many functions, exported and internal, now atomically set the close-on-exec
731 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
733 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
735 Implemented by Pravin Satpute.
737 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
741 * The following bugs are resolved with this release:
743 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
744 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
745 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
746 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
747 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
748 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
749 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
751 * New locales: bo_CN, bo_IN, shs_CA.
753 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
755 * Sorting rules for some Indian languages (Devanagari and Gujarati).
756 Implemented by Pravin Satpute.
758 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
760 * nscd caches now all timeouts for DNS entries
761 Implemented by Ulrich Drepper.
763 * nscd is more efficient and wakes up less often.
764 Implemented by Ulrich Drepper.
766 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
767 vdprintf, and obstack_vprintf.
768 Implemented by Jakub Jelinek.
770 * Faster memset for x86-64.
771 Implemented by Harsha Jagasia and H.J. Lu.
773 * Faster memcpy on x86.
774 Implemented by Ulrich Drepper.
776 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
777 Implemented by Ulrich Drepper.
779 * Faster sqrt and sqrtf implemention for some PPC variants.
780 Implemented by Steven Munroe.
784 * The following bugs are resolved with this release:
786 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
787 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
788 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
789 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
790 5071, 5103, 5104, 5112, 5113, 5184, 5186
792 * More checking functions: fread, fread_unlocked, open*, mq_open.
793 Implemented by Jakub Jelinek and Ulrich Drepper.
795 * Extend fortification to C++. Implemented by Jakub Jelinek.
797 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
798 by not recognizing 'a' as a modifier when those specs are requested.
799 Implemented by Jakub Jelinek.
801 * PPC optimizations to math and string functions.
802 Implemented by Steven Munroe.
804 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
805 options to be passed. Implemented by Ulrich Drepper.
807 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
809 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
810 Implemented by Ulrich Drepper.
812 * Handle private futexes in the NPTL implementation.
813 Implemented by Jakub Jelinek and Ulrich Drepper.
815 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
816 Implemented by Roland McGrath and Ulrich Drepper.
818 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
820 * SHA-256 and SHA-512 based password encryption.
821 Implemented by Ulrich Drepper.
823 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
824 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
827 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
828 Implemented by Ulrich Drepper.
832 * The following bugs are resolved with this release:
834 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
835 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
836 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
837 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
838 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
839 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
840 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
843 * New Linux interfaces: epoll_pwait, sched_getcpu.
845 * New generic interfaces: strerror_l.
847 * nscd can now cache the services database. Implemented by Ulrich Drepper.
851 * The following bugs are resolved with this release:
853 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
854 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
855 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
856 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
857 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
858 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
859 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
860 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
861 3225, 3251, 3252, 3253, 3273
863 * For Linux, the sorting of addresses returned by getaddrinfo now also
864 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
865 Implemented by Ulrich Drepper.
867 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
868 Implemented by Ulrich Drepper.
870 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
872 * New iconv module for MIK. Contributed by Alexander Shopov.
874 * For sites with broken group and/or passwd database, the auto-propagate
875 option of nscd can prevent creating ID lookup entries from the results
876 of a name lookup and vice versa. This usually is no problem but some
877 site might have problems with the default behavior.
878 Implemented by Ulrich Drepper.
880 * Iterating over entire database in NIS can be slow. With the
881 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
882 to trade time for memory. The entire database will be read at once.
883 Implemented by Ulrich Drepper.
885 * The interfaces introduced in RFC 3542 have been implemented by
888 * Support for the new ELF hash table format was added by Ulrich Drepper.
890 * Support for priority inheritance mutexes added by Jakub Jelinek and
893 * Support for priority protected mutexes added by Jakub Jelinek.
895 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
896 or_IN, csb_PL, fy_NL, sr_ME.
900 * More overflow detection functions.
902 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
903 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
905 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
906 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
907 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
908 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
909 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
910 by Masahide Washizawa.
912 * It is now possible to install audit libraries for the dynamic linker using
913 LD_AUDIT. Implemented by Ulrich Drepper.
915 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
916 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
917 For a libc and libpthread that works well on Linux 2.4 kernels, we
918 recommend using the stable 2.3 branch.
920 * The new function open_wmemstream acts like open_memstream,
921 but uses a wchar_t wide character buffer.
923 * The new function ppoll is an improved version of poll, similar to pselect.
925 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
926 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
927 renameat, unlinkat, linkat, symlinkat, readlinkat.
929 * New Linux kernel system calls: unshare,
930 inotify_init, inotify_add_watch, inotify_rm_watch.
932 * The euidaccess function is now also known by the alias eaccess,
933 for compatibility with some other systems.
935 * Timezone data updated to 2006b version.
939 * The following bugs are resolved with this release:
941 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
942 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
943 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
944 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
945 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
946 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
948 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
950 * As of this release, GCC 4 can be used to compile the C Library.
952 * Timezone data updated to 2005m version.
956 * The following bugs are resolved with this release:
958 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
959 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
960 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
961 777, 787, 821, 822, 823, 825
963 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
967 * Support for RFC 3678. Real implementations exist only for Linux so far.
968 Implemented by Ulrich Drepper.
970 * nscd can now cache entries persistently. Expiring entries are reloaded.
971 For speedups the cache can be shared in memory with client processes.
972 Implemented by Ulrich Drepper.
974 * nscd can now perform SELinux checks.
975 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
977 * getaddrinfo queries are now cached. Canonical name lookup is performed
979 Implemented by Ulrich Drepper.
981 * The nothrow function attribute is used when headers are used by gcc when
982 compiling C code. This can avoid significant amounts of exception
985 * The malloc functions perform more error checking and are stricter when
986 it comes to reacting on errors. The default action is to terminate
987 the process after showing an error message. Implemented by Ulrich Drepper.
989 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
990 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
992 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
993 namespaces using the new function dlmopen(). This feature is of course,
994 like most other dynamic loading functionality, not available in statically
995 linked applications. Implemented by Ulrich Drepper.
997 * Low-overhead boundary checking variants of string and some stdio functions
998 were added. These are to be used in conjunction with a gcc patch by
999 Jakub Jelinek which adds calls to these functions if possible.
1000 Implemented by Jakub Jelinek and Ulrich Drepper.
1002 * Old code for several operating systems and machine architectures that
1003 have not been in working condition in a long time have been removed from
1004 the main source tree maintained by the GNU C Library's maintainers.
1005 These files are now reside in the separate `ports' source module
1006 that is usable as an add-on when building the library.
1010 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1011 interrogate the dynamic linker, compatible with the Solaris interface.
1013 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1014 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1016 * getifaddrs now uses the netlink interface on Linux to get its information.
1017 Implemented by Thorsten Kukuk.
1019 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1020 Implemented by Ulrich Drepper.
1022 * support for non-executable stacks on x86 has been added. Changes mostly
1025 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1028 * getaddrinfo now performs destination address selection according to
1033 * Thread-safe interfaces for many functions that access locale data
1034 were added in version 2.3, but these features were omitted from NEWS.
1035 Many functions have variants with an `_l' suffix that take a `locale_t'
1036 object as a parameter rather than consulting the current locale.
1037 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1038 create and maintain `locale_t' objects. Additionally, the new function
1039 `uselocale' sets "the current locale" (as used by functions not so
1040 parameterized) set for an individual thread. These features were added
1041 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1043 * The functions getresuid, getresgid, setresuid, and setresgid, which
1044 have long been available on Linux, are now declared in <unistd.h>
1045 and are now also available on the Hurd.
1047 * ELF thread-local storage support (TLS) now works on x86-64.
1049 * The new dynamic string token $LIB is expanded in shared library names.
1050 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1052 * Aldy Hernandez contributed complete software floating point support for
1053 PowerPC machines with no FPU.
1055 * fexecve is implemented on Linux.
1057 * The `btowc' function should work at least twice as fast due to
1058 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1060 * With approriate thread add-ons cancelable functions are now implemented
1061 in libc.so as well. No need to call the function in libpthread. This
1062 change allowed to finally disable the incorrect and expensive handling
1063 of weak definition in ld.so.
1065 * Yet more PLT entries in libc.so have been removed. We finally arrived
1066 at the bare minimum. Startup times improved appropriately.
1068 * Support for the new Linux/x86 system call interface was added. The
1069 AT_SYSINFO auxiliary vector entry is recognized and handled.
1073 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1076 * iconv (the program and the interface) now accepts empty names (excluding
1077 options like //TRANSLIT) to mean "use charset of current locale".
1079 * localedef can now transliterate characters in strings which are not in
1080 the provided charmap. The information from the input locale is used.
1082 * Prelinking support was added for ELF targets. This requires additional
1083 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1085 * Read-only stdio streams now use mmap to speed up operation by eliminating
1086 copying and buffer underflows. To use add 'm' to the mode string of
1087 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1089 * The malloc functions were completely rewritten by Wolfram Gloger based
1090 on Doug Lea's malloc-2.7.0.c.
1092 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1093 implementation of regex.
1095 * Bruno Haible upgraded the iconv and locale implementation to support
1098 * Contents of the LC_* and LANG environment variables in the CEN style are
1099 not recognized anymore. It never was used. Change by Ulrich Drepper.
1101 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1102 thread-local storage (TLS) ABI on some platforms.
1103 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1105 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1106 EUC-JISX0213, and TSCII.
1108 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1109 BSD-compatible interface for getting all network interface addresses.
1110 Implementation for IPv4 by Roland McGrath.
1112 * Loading of locale data is faster due to the introduction of a locale
1113 archive. Implemented by Roland McGrath and Ulrich Drepper.
1115 * Startup times are significantly reduced by not using exported functions
1116 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1119 * Steven Munroe contributed a port to PowerPC64/Linux.
1123 * The Hurd now uses the GNU libio implementation of stdio rather than the
1124 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1126 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1127 with the same behavior as the Linux system call of the same name.
1131 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1132 128-bit long double format.
1134 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1135 IBM1161, and IBM1162 charsets.
1137 * Andreas Jaeger contributed a port to x86-64/Linux.
1139 * Peter Bruin contributed a port to PowerPC/Hurd.
1141 * libc functions using I/O streams now can handle wide-oriented streams
1144 * optimizations in the dynamic linker. Binaries created by recent binutils
1145 versions start up quicker due to reduced time spent on relocations.
1147 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1151 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1152 asinh, atanh, j0 for the 128-bit long double format.
1154 * Bruno Haible updated all the code handling Unicode in some form to
1155 support Unicode 3.1.
1157 * Speed of regex for single-byte locales is back to previous levels.
1158 Patch by Isamu Hasegawa.
1160 * Alpha, SPARC, and IA-64 now also using floating stacks.
1162 * Startup time of internationalized applications greatly improved through
1163 iconv cache. Use iconvconfig to generate the cache file.
1164 Contributed by Ulrich Drepper.
1166 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1167 severe performance problems. Patch by David Mosberger.
1169 * The Hurd port got a lot more functionality like AIO, various stdio
1170 extensions, etc. Mainly done by Roland McGrath.
1172 * mtrace can now lookup symbols in shared libraries.
1176 * Intel's IA-64 math library is largely integrated. It provides fast and
1177 accurate implementatations for most basic and standard math functions
1178 in float, double, and long double format.
1180 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1181 and asin for the 96-bit long double format and asin, log, tan for the
1182 128-bit long double format.
1184 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1185 The basic double functions exist today. Contributed by Abraham Ziv
1186 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1187 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1189 * An asynchronous name lookup library was added. The interface is designed
1190 after POSIX AIO. The proposal was circulated beforehand to get comments.
1191 No negative ones came in. Implemented by Ulrich Drepper.
1193 * Port to S390/64bit contributed by Martin Schwidefsky
1194 <schwidefsky@de.ibm.com>.
1196 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1197 of functions for Linux/IA-64.
1199 * The RPC code is now thread safe. Threads can now use the same service
1200 of different services at the same time. Patch by Eric Norum
1201 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1203 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1204 family of functions for Linux/S390.
1206 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1207 of functions for Linux/x86.
1209 * Port to Linux/CRIS contributed by Axis Communications.
1213 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1214 we can now check for namespace violations and missing declarations. The
1215 result is that almost all headers are now Unix-compliant (as defined in
1216 the upcoming XPG6). The negative side is that some programs might need
1217 corrections, too, if they depend on the incorrect form of the headers in
1218 previous versions which defined too many symbols and included too many
1221 * regex now handles multibyte character sets correctly.
1222 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1224 * iconv (the program) does now conform to the upcoming XPG6 and handles
1225 charmaps. Instead of the charset names the path of charmaps can be
1226 provided and the conversion happens based on this data.
1227 Contributed by Ulrich Drepper.
1229 * The locale program now provides detailed information about the installed
1234 only lists the names of the supported locales
1238 provides details such as country, language, and codeset name.
1239 Contributed by Ulrich Drepper.
1243 * The gencat program now parses the input file according to the charset
1244 selected by the LC_CTYPE category. This is important for stateful
1245 character sets. To make generating catalogs easier there is a way
1246 to overwrite the charset selected by the locale: before the first
1247 message or $ quote line the catalog can contain a line like
1249 $ codeset=ISO-8859-2
1251 to select the charset (ISO-8859-2 in this case).
1253 Implemented by Shinya Hanataka and Ulrich Drepper.
1255 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1256 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1257 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1259 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1260 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1262 * The LANGUAGE environment variable is now ignored unless the locale is
1263 changed from the default "C" locale.
1265 * The usual bug fixes.
1269 * Greg McGary added runtime support for bounds checking using gcc's
1270 new -fbounded-pointers option. ix86 target is complete. PowerPC
1273 * Thorsten Kukuk added secure mode support to nscd.
1275 * The Berkeley db libraries have been removed.
1277 Related, the nss_db module is now in a separate package since it
1278 obviously requires a database library being available.
1280 * Wide character I/O streams implemented by Ulrich Drepper.
1282 * Functions from the extended socket API added by Ulrich Drepper.
1284 * Functions feenableexcept and fedisableexcept to control the
1285 behaviour of individual exceptions have been added by Andreas Jaeger.
1287 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1289 * The resolver code has been updated from bind 8.2.3-T5B which supports
1290 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1293 This change could in some situations effect backward compatibility. Since
1294 now `_res' is a thread-local instead of a global variable, modifying it
1295 in one thread does not have any effect in other threads.
1297 The resolver library was also extended to allow IPv6 as the transport
1298 protocol for the requests. This work was done by Stig Venaas.
1300 * Compatibility code for K&R C compilers has been removed from the
1301 header files. A ISO C compiler is needed to use the library
1302 (conforming to either C89 or C99 standard).
1304 * Complete rewrite of the localedef program to support multibyte character
1305 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1306 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1307 Implemented by Ulrich Drepper.
1309 Bruno Haible significantly improved the generation and use of the data
1310 structures for the wide character tables.
1312 * Plural handling in gettext implemented by Ulrich Drepper.
1314 * The utmp daemon has been removed.
1316 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1318 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1321 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1323 * POSIX barriers implemented by Kaz Kylheku.
1325 * POSIX spawn function family implemented by Ulrich Drepper.
1327 * POSIX spinlocks are now available.
1329 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1331 * the configure option --enable-kernel=X.Y.Z allows to strip out
1332 compatibility for kernel versions before X.Y.Z. This is currently only
1333 implemented for Linux.
1335 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1336 field sin6_scope_id. This means that all programs using IPv6 should be
1337 recompiled. Don't expect binary compatibility with previous glibc
1340 * various conversion modules for IBM character sets contributed by
1343 * IA-64 port by Jes Sorensen and HJ Lu.
1357 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1359 * New xdr functions are added; some rpc functions are now 64bit clean.
1361 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1363 * Fixed known incompatibilities with glibc 2.0.
1365 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1367 * Optimized a number of functions (especially the ELF dynamic loader).
1369 * Update timezone data files.
1371 * lots of charmaps corrections
1373 * some new locale definitions and charmaps
1378 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1379 conform to POSIX member type requirements. Symbol versions have been
1380 adjusted as needed within the library, and for direct use by applications,
1381 but there is potential for problems if third-party libraries use
1382 struct timeval as part of their interface. This does not present
1383 a problem for X and other "essential" system libraries.
1385 * An additional locale model to support C++ Standard Library locale
1386 model and probably more was implemented by Ulrich Drepper.
1388 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1391 * Miles Bader provided the `argp' function family to support hierachical
1392 command line argument parsing, layered on top of getopt.
1394 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1396 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1399 * scanf recognizes the %a and %A format for scanning floating point numbers.
1401 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1402 information and interfaces for the available integer types.
1404 * about 130 new math functions were added to implement the ISO C9x math
1407 * the new header <complex.h> contains definitions of the complex math
1408 functions from ISO C 9X.
1410 * the new header <tgmath.h> defines generic macros to use complex or
1411 real valued functions.
1413 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1415 * Andreas Jaeger provided a test suite for the math library.
1417 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1419 * Ulrich Drepper added character set conversion functions (iconv).
1421 * Optimized string functions have been added.
1423 * The localedata addon is now part of glibc.
1425 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1427 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1428 daemon for NSS (nscd).
1430 Missing a better place here are some numbers on improvements. Under
1431 Linux 2.1.125 un-tar-ing the kernel sources takes
1435 using local files 12.19s 6.88s 22.91s
1437 using NIS 13.92s 8.91s 26.34s
1439 using NIS & nscd 10.37s 7.34s 25.30s
1441 using NIS+ 27.57s 30.37s 640.46s
1443 using NIS+ & nscd 10.25s 7.83s 26.51s
1445 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1447 Keep in mind that non-namelookup related operations dominate above times.
1448 It was just a common complain that using NIS+ unpacking the kernel is
1451 [1] The old nscd implementation is not available anymore since it was
1452 distributed with glibc up to version 2.0.98 and thus is now replaced.
1454 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1456 * Mark Kettenis provided a Hesiod NSS module.
1458 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1459 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1461 * rcmd can now handle netgroups (Dick Streefland).
1463 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1466 * Support for the IPv6 protocol has been added to the socket API, as per the
1467 latest draft standards.
1469 * Support for Linux 2.2 has been added.
1471 * Interface changes relative to the latest 2.0.x release:
1472 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1473 addseverity NEW: Unix98
1474 alphasort64 NEW: LFS
1475 argp_err_exit_status NEW: argp, GNU ext
1476 argp_error NEW: argp, GNU ext
1477 argp_failure NEW: argp, GNU ext
1478 argp_help NEW: argp, GNU ext
1479 argp_parse NEW: argp, GNU ext
1480 argp_program_bug_address NEW: argp, GNU ext
1481 argp_program_version NEW: argp, GNU ext
1482 argp_program_version_hook NEW: argp, GNU ext
1483 argp_state_help NEW: argp, GNU ext
1484 argp_usage NEW: argp, GNU ext
1485 authdes_create NEW: Secure RPC
1486 authdes_getucred NEW: Secure RPC
1487 authdes_pk_create NEW: Secure RPC
1488 backtrace NEW: GNU ext.
1489 backtrace_symbols NEW: GNU ext.
1490 backtrace_symbols_fd NEW: GNU ext.
1492 cacosf NEW: ISO C 9x
1493 cacosh NEW: ISO C 9x
1494 cacoshf NEW: ISO C 9x
1495 cacoshl NEW: ISO C 9x
1496 cacosl NEW: ISO C 9x
1503 casinf NEW: ISO C 9x
1504 casinh NEW: ISO C 9x
1505 casinhf NEW: ISO C 9x
1506 casinhl NEW: ISO C 9x
1507 casinl NEW: ISO C 9x
1509 catanf NEW: ISO C 9x
1510 catanh NEW: ISO C 9x
1511 catanhf NEW: ISO C 9x
1512 catanhl NEW: ISO C 9x
1513 catanl NEW: ISO C 9x
1514 cbc_crypt NEW: Secure RPC
1518 ccoshf NEW: ISO C 9x
1519 ccoshl NEW: ISO C 9x
1525 cimagf NEW: ISO C 9x
1526 cimagl NEW: ISO C 9x
1527 clearerr_locked REMOVED
1528 clntunix_create NEW: sunrpc ext
1530 clog10 NEW: ISO C 9x
1531 clog10f NEW: ISO C 9x
1532 clog10l NEW: ISO C 9x
1542 cprojf NEW: ISO C 9x
1543 cprojl NEW: ISO C 9x
1545 crealf NEW: ISO C 9x
1546 creall NEW: ISO C 9x
1551 csinhf NEW: ISO C 9x
1552 csinhl NEW: ISO C 9x
1555 csqrtf NEW: ISO C 9x
1556 csqrtl NEW: ISO C 9x
1560 ctanhf NEW: ISO C 9x
1561 ctanhl NEW: ISO C 9x
1563 des_setparity NEW: Secure RPC
1564 ecb_crypt NEW: Secure RPC
1565 endutxent NEW: Unix98
1567 exp10f NEW: ISO C 9x
1568 exp10l NEW: ISO C 9x
1572 fattach NEW: STREAMS
1573 fdetach NEW: STREAMS
1577 feclearexcept NEW: ISO C 9x
1578 fegetenv NEW: ISO C 9x
1579 fegetexceptflag NEW: ISO C 9x
1580 fegetround NEW: ISO C 9x
1581 feholdexcept NEW: ISO C 9x
1583 feraiseexcept NEW: ISO C 9x
1584 ferror_locked REMOVED
1585 fesetenv NEW: ISO C 9x
1586 fesetexceptflag NEW: ISO C 9x
1587 fesetround NEW: ISO C 9x
1588 fetestexcept NEW: ISO C 9x
1589 feupdateenv NEW: ISO C 9x
1590 fflush_locked REMOVED
1594 fgets_unlocked NEW: GNU ext.
1595 fileno_locked REMOVED
1607 fputc_locked REMOVED
1608 fputs_unlocked NEW: GNU ext.
1609 fread_unlocked NEW: GNU ext.
1614 fstatvfs NEW: Unix98
1618 ftruncate64 NEW: LFS
1620 fwrite_unlocked NEW: GNU ext.
1621 gai_strerror NEW: IPv6
1625 getchar_locked REMOVED
1627 getdate_err NEW: Unix98
1628 getdate_r NEW: GNU ext.
1630 getnameinfo NEW: IPv6
1631 getnetname NEW: Secure RPC
1632 getpmsg NEW: STREAMS
1633 getpt NEW: Unix98 PTY
1634 getrlimit64 NEW: LFS
1635 getutxent NEW: Unix98
1636 getutxid NEW: Unix98
1637 getutxline NEW: Unix98
1638 glob64 NEW: GNU ext.
1639 globfree64 NEW: GNU ext.
1640 gnu_get_libc_release NEW: GNU ext.
1641 gnu_get_libc_version NEW: GNU ext.
1642 grantpt NEW: Unix98 PTY
1643 host2netname NEW: Secure RPC
1645 iconv_close NEW: iconv
1646 iconv_open NEW: iconv
1647 if_freenameindex NEW: IPv6
1648 if_indextoname NEW: IPv6
1649 if_nameindex NEW: IPv6
1650 if_nametoindex NEW: IPv6
1651 in6addr_any NEW: IPv6
1652 in6addr_loopback NEW: IPv6
1653 inet6_isipv4mapped NEW: IPv6
1654 isastream NEW: STREAMS
1655 iswblank NEW: GNU ext.
1656 key_decryptsession NEW: Secure RPC
1657 key_decryptsession_pk NEW: Secure RPC
1658 key_encryptsession NEW: Secure RPC
1659 key_encryptsession_pk NEW: Secure RPC
1660 key_gendes NEW: Secure RPC
1661 key_get_conv NEW: Secure RPC
1662 key_secretkey_is_set NEW: Secure RPC
1663 key_setnet NEW: Secure RPC
1664 key_setsecret NEW: Secure RPC
1665 llrint NEW: ISO C 9x
1666 llrintf NEW: ISO C 9x
1667 llrintl NEW: ISO C 9x
1668 llround NEW: ISO C 9x
1669 llroundf NEW: ISO C 9x
1670 llroundl NEW: ISO C 9x
1675 lrintf NEW: ISO C 9x
1676 lrintl NEW: ISO C 9x
1677 lround NEW: ISO C 9x
1678 lroundf NEW: ISO C 9x
1679 lroundl NEW: ISO C 9x
1681 makecontext NEW: Unix98
1682 mempcpy NEW: GNU ext.
1685 modify_ldt NEW: kernel
1689 nearbyint NEW: ISO C 9x
1690 nearbyintf NEW: ISO C 9x
1691 nearbyintl NEW: ISO C 9x
1692 netname2host NEW: Secure RPC
1693 netname2user NEW: Secure RPC
1694 nexttoward NEW: ISO C 9x
1695 nexttowardf NEW: ISO C 9x
1696 nexttowardl NEW: ISO C 9x
1700 passwd2des NEW: Secure RPC
1702 pow10f NEW: GNU ext.
1703 pow10l NEW: GNU ext.
1706 printf_size NEW: GNU ext.
1707 printf_size_info NEW: GNU ext.
1708 profil_counter REMOVED
1709 pthread_mutexattr_getkind_np REPLACED
1710 pthread_mutexattr_setkind_np REPLACED
1711 ptsname NEW: Unix98 PTY
1712 ptsname_r NEW: Unix98 PTY
1714 putchar_locked REMOVED
1715 putgrent NEW: GNU ext.
1717 putpmsg NEW: STREAMS
1718 pututxline NEW: Unix98
1722 readdir64_r NEW: LFS
1723 remquo NEW: ISO C 9x
1724 remquof NEW: ISO C 9x
1725 remquol NEW: ISO C 9x
1727 roundf NEW: ISO C 9x
1728 roundl NEW: ISO C 9x
1730 scalbln NEW: ISO C 9x
1731 scalblnf NEW: ISO C 9x
1732 scalblnl NEW: ISO C 9x
1734 sendfile NEW: kernel
1735 setcontext NEW: Unix98
1736 setrlimit64 NEW: LFS
1737 setutxent NEW: Unix98
1739 sigignore NEW: Unix98
1740 sigqueue NEW: POSIX.1b
1741 sigrelse NEW: Unix98
1742 sigset NEW: POSIX.1b
1743 sigtimedwait NEW: POSIX.1b
1744 sigwaitinfo NEW: POSIX.1b
1745 sincos NEW: GNU ext.
1746 sincosf NEW: GNU ext.
1747 sincosl NEW: GNU ext.
1751 strcasestr NEW: GNU ext.
1752 strtoimax NEW: ISO C 9x
1753 strtoumax NEW: ISO C 9x
1754 strverscmp NEW: GNU ext.
1755 svcauthdes_stats NEW: Secure RPC
1756 svcunix_create NEW: sunrpc etx
1757 svcunixfd_create NEW: sunrpc ext
1758 swapcontext NEW: Unix98
1759 tcgetsid NEW: Unix98 PTY
1760 tdestroy NEW: GNU ext.
1761 tgamma NEW: ISO C 9x
1762 tgammaf NEW: ISO C 9x
1763 tgammal NEW: ISO C 9x
1767 truncf NEW: ISO C 9x
1768 truncl NEW: ISO C 9x
1770 unlockpt NEW: Unix98 PTY
1771 updwtmpx NEW: Unix98
1772 user2netname NEW: Secure RPC
1773 utmpxname NEW: Unix98
1774 versionsort NEW: GNU ext.
1775 versionsort64 NEW: GNU ext.
1777 wcscasecmp NEW: GNU ext.
1778 wcsncasecmp NEW: GNU ext.
1779 wcsnlen NEW: GNU ext.
1780 wcstoimax NEW: ISO C 9x
1781 wcstoll NEW: ISO C 9x
1782 wcstoull NEW: ISO C 9x
1783 wcstoumax NEW: ISO C 9x
1785 wordexp NEW: POSIX.2
1786 wordfree NEW: POSIX.2
1787 write_profiling REMOVED
1788 xdecrypt NEW: Secure RPC
1789 xdr_authdes_cred NEW: Secure RPC
1790 xdr_authdes_verf NEW: Secure RPC
1791 xdr_cryptkeyarg NEW: Secure RPC
1792 xdr_cryptkeyarg2 NEW: Secure RPC
1793 xdr_cryptkeyres NEW: Secure RPC
1794 xdr_getcredres NEW: Secure RPC
1795 xdr_key_netstarg NEW: Secure RPC
1796 xdr_key_netstres NEW: Secure RPC
1797 xdr_keybuf NEW: Secure RPC
1798 xdr_keystatus NEW: Secure RPC
1799 xdr_netnamestr NEW: Secure RPC
1800 xdr_sizeof NEW: Secure RPC
1801 xdr_unixcred NEW: sunrpc ext
1802 xencrypt NEW: Secure RPC
1803 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1814 * inet_ntoa is thread-safe
1816 * updwtmp is moved from libutil to libc
1818 * rewrite of cbrt function
1820 * update of timezone data
1834 * add atoll function
1836 * fix complex problems in Berkeley DB code
1838 * fix math functions
1842 * fixed lots of header problems (especially Linux/GNU specific)
1844 * dynamic loader preserves all registers
1846 * Roland McGrath provided support for handling of auxiliary objects in
1847 the ELF dynamic loader.
1849 * support for parallel builds is improved
1853 * GNU extensions are no longer declared by default. To enable them you
1854 must define the macro `_GNU_SOURCE' in your program or compile with
1857 * The library has changed from using GNU ld symbol aliases to using weak
1858 symbols where available. The ELF object file format supports weak
1859 symbols; GNU ld also supports weak symbols in the a.out format. (There
1860 is also now support for other GNU ld extensions in ELF. Use the
1861 `--with-elf' option to configure to indicate you have ELF, and
1862 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1863 of many files which contained only symbol aliases, reducing the size of
1864 the source and the compiled library; many other files were renamed to
1865 less cryptic names previously occupied by the symbol alias files.
1866 There is a new header file <elf.h> for programs which operate on
1867 files in the ELF format.
1869 * Converted to Autoconf version 2, so `configure' has more options.
1870 Run `configure --help' to see the details.
1872 * The library can now be configured to build profiling, highly-optimized
1873 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1874 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1875 `configure' enable building these extra libraries. The shared library is
1876 built by default when using both ELF and GNU ld. When shared libraries
1877 are enabled, the new library `-ldl' is available for arbitrary run-time
1878 loading of shared objects; its interface is defined in <dlfcn.h>. The
1879 new header file <link.h> gives access to the internals of the run-time
1880 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1881 application of same name on other systems and it provides information
1882 about dynamically linked binaries.
1884 * The C library now provides the run-time support code for profiling
1885 executables compiled with `-pg'. Programs can control the profiling code
1886 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1887 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1888 the support for this file format was contributed by David Mosberger-Tang.
1890 * The math code has been replaced with a math library based on fdlibm from
1891 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1892 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1893 functions. The math functions now reside in a separate library, so
1894 programs using them will need to use `-lm' their linking commands.
1896 * John C. Bowman contributed optimized ix87 assembler inline functions.
1898 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1899 mechanism similar to that found in Solaris 2. This is now used for the
1900 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1901 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1902 file controls what services are used for each individual database. This
1903 works by loading shared libraries with names specified in `nsswitch.conf',
1904 so service modules can be changed or added at any time without even
1905 relinking any program. Currently there are the file, db, and NIS based
1906 NSS services available.
1908 * The new functions `strtoq' and `strtouq' parse integer values from
1909 strings, like `strtol' and `strtoul', but they return `long long int' and
1910 `unsigned long long int' values, respectively (64-bit quantities).
1912 * The new functions `strtof' and `strtold' parse floating-point values from
1913 strings, like `strtod', but they return `float' and `long double' values,
1914 respectively (on some machines `double' and `long double' are the same).
1916 * Ulrich Drepper has contributed new implementations of the floating-point
1917 printing and reading code used in the `printf' family of functions and
1918 `strtod', `strtof', and `strtold'. These new functions are perfectly
1919 accurate, and much faster than the old ones.
1921 * The implementation of the POSIX locale model was completely rewritten by
1922 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1923 to compile the POSIX locale definition.
1925 * The former dummy implementations of the strcoll and strxfrm function are
1926 now replaced by fully functional code contributed by Ulrich Drepper. The
1927 collation information comes from the POSIX locale definitions.
1929 * The new header <langinfo.h> defines an interface for accessing
1930 various locale-dependent data (using the locale chosen with `setlocale').
1932 * Ulrich Drepper has contributed a new suite of functions for operation on
1933 wide-character and multibyte-character strings, in <wchar.h>;
1934 and classification and case conversion of wide characters, in <wctype.h>.
1935 These new functions are conforming to the ISO C, Amendement 1 specification.
1937 * There is now a second implementation of the standard I/O library available.
1938 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1939 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1941 * You can now use positional parameter specifications in format strings
1942 for the `printf' and `scanf' families of functions. For example,
1943 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1944 ``Number 6, Mr Jones''. This is mainly useful when providing different
1945 format strings for different languages, whose grammars may dictate
1946 different orderings of the values being printed. To support this
1947 feature, the interface for `register_printf_handler' has changed; see
1948 the header file <printf.h> for details.
1950 * The `printf' and `scanf' families of functions now understand a new
1951 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1952 to group numbers as indicated by the locale; for `scanf' and friends, this
1953 says to accept as valid only a number with all the proper grouping
1954 separators in the right places. In the default "C" locale, numbers are
1955 not grouped; but locales for specific countries will define the usual
1956 conventions (i.e. separate thousands with `,' in the US locale).
1958 * The pgrp functions have been regularized, slightly incompatibly but much
1959 less confusingly. The core functions are now `getpgid' and `setpgid',
1960 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1961 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1962 provided for compatibility. There is no longer an incompatible `getpgrp'
1963 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1965 * The new header file <fts.h> and suite of functions simplify programs that
1966 operate on directory trees. This code comes from 4.4 BSD.
1968 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1969 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1970 NSS scheme used in glibc.
1972 * There is a new malloc debugging hook `__memalign_hook'.
1974 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1975 `unsigned int' in <sys/types.h>. These are for compatibility only and
1976 their use is discouraged.
1978 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1979 done differently, so that it works even without GNU ld.
1981 * New function `euidaccess' checks allowed access to a file like `access',
1982 but using the effective IDs instead of the real IDs.
1984 * The time zone data files have been updated for the latest and greatest
1985 local time conventions of the countries of the world.
1987 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1990 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1991 for formatting floating-point numbers. They are provided only for
1992 compatibility; new programs should use `sprintf' instead. There are
1993 also equivalent function for the `long double' floating-point type and
1994 all functions also exist in a reentrant form.
1996 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1997 functions for maintaining the login-record files (primarily of use to
1998 system programs such as `login'), and convenient functions for
1999 allocating and initializing a pseudo-terminal (pty) device.
2001 * Ulrich Drepper has contributed new support for System V style
2002 shared memory and IPC on systems that support it.
2004 * Ulrich Drepper has contributed several miscellaneous new functions found
2005 in System V: The `hsearch' family of functions provide an effective
2006 implementation of hash tables; `a64l' and `l64a' provide a very simple
2007 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2010 * Ulrich Drepper has contributed new reentrant counterparts for the
2011 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2013 * Ulrich Drepper has contributed new, highly-optimized versions of several
2014 string functions for the i486/Pentium family of processors.
2016 * Ulrich Drepper has updated the Linux-specific code, based largely
2017 on work done in Hongjiu Lu's version of GNU libc for Linux.
2018 The GNU library now supports Linux versions 2.0.10 and later,
2019 using the ELF object file format (i[3456]86-*-linux).
2021 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2023 * David Mosberger-Tang and Richard Henderson have ported the C library
2024 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2025 dynamic linking support for ELF/Alpha.
2027 * Richard Henderson contributed several Alpha optimized assembler function
2028 for arithmetic and string handling.
2030 * Ulrich Drepper has contributed a new set of message catalog functions to
2031 support multiple languages using the <libintl.h> interface, for use with
2032 his new package GNU gettext. Translation volunteers have contributed
2033 catalogs of the library's messages in Spanish, German, and Korean.
2035 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2036 program and the `catgets' function for reading the catalog files it
2037 creates. (The <libintl.h> interface is preferred; we include the
2038 <nl_types.h> interface using `catgets' only for source compatibility with
2039 programs already written to use it.)
2041 * New header file <values.h> gives SVID-compatible names for <limits.h>
2044 * Various new macros, declarations, and small header files for compatibility
2047 * New function `group_member' is a convenient way to check if a process has
2048 a given effective group ID.
2050 * When using GCC 2.7 and later, the socket functions are now declared in a
2051 special way so that passing an argument of type `struct sockaddr_in *',
2052 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2053 `struct sockaddr *' type, does not generate a type-clash warning.
2055 * New function `error' declared in header file <error.h> is a convenient
2056 function for printing error messages and optionally exiting; this is the
2057 canonical function used in GNU programs. The new functions `err', `warn',
2058 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2059 doing the same thing.
2061 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2062 POSIX.2 `glob' function to do ~ and {...} expansion.
2064 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2065 `clearenv' which is used in POSIX.9 is also available.
2067 * New function `getsid' returns session ID number on systems that support it.
2069 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2070 files <db.h> and <mpool.h> provide a rich set of functions for several
2071 types of simple databases stored in memory and in files, and <ndbm.h> is
2072 an old `ndbm'-compatible interface using the `db' functions. Link with
2073 `-ldb' to get these functions.
2075 * New macro `strdupa' copies a string like `strdup', but uses local stack
2076 space from `alloca' instead of dynamic heap space from `malloc'.
2078 * New function `strnlen' is like `strlen' but searches only a given maximum
2079 number of characters for the null terminator. `stpncpy', `strndup' and
2080 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2083 * New function `statfs' in header <sys/statfs.h>.
2085 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2086 provide convenient functions for operating on blocks of null-terminated
2089 * A new suite of functions in <utmp.h> handle all the details of reading
2090 and writing the utmp file.
2092 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2095 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2096 completely POSIX compliant and also implemented the extended functionality
2097 to handle alternate digit representation and alternate era date formats.
2099 * Ulrich Drepper provided an implementation of the `strptime' function
2100 defined in XPG4.2 which transforms a string into a `struct tm' value.
2102 * Paul Eggert provided the tzselect shell script as part of the timezone
2103 code. The shell script makes it easy to select the correct timezone
2106 * The implementation of the malloc family of functions is completely replaced
2107 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2108 The implementation uses the mmap function (if available) and it is
2109 optimized for the use in multi threaded programs.
2111 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2112 functions. This new functionality is usable by specifying a special
2113 salt string and it is compatible with implementation on *BSD systems.
2115 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2116 `getsubopt' to handle second level command line options, `bsd_signal'
2117 to access BSD style `signal' functionality, the obsolete `regexp' style
2120 * the `lchown' function is available on system which support this
2123 * The implementation of the shadow password handling function was contributed
2126 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2128 * POSIX.1g support was added. The <sys/select.h> header is available,
2129 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2130 implementation of `getaddrinfo'.
2134 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2136 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2137 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2139 * The new function `daemon' from 4.4 BSD is useful for server programs that
2140 want to put themselves in the background.
2142 * Joel Sherrill has contributed support for several standalone boards that
2143 run without an operating system.
2145 * `printf', `scanf' and friends now accept a `q' type modifier for long
2146 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2148 * All of the code taken from BSD (notably most of the math and networking
2149 routines) has been updated from the BSD 4.4-Lite release.
2151 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2153 * The new functions `getdomainname' and `setdomainname' fetch or change the
2154 YP/NIS domain name. These are system calls which exist on systems which
2157 * The time zone data files have been updated for the latest international
2160 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2161 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2165 * The C library now includes support for Sun RPC, from Sun's free
2166 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2167 are included. (There is still no support for YP.)
2169 * Tom Quinn has contributed a port of the C library to SGI machines running
2170 Irix 4 (mips-sgi-irix4).
2172 * The new `lockf' function is a simplified interface to the locking
2173 facilities of `fcntl', included for compatibility.
2175 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2177 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2179 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2182 * The error message printed by `assert' for a failed assertion now includes
2183 the name of the program (if using GNU ld) and the name of the calling
2184 function (with versions of GCC that support this).
2186 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2188 * The library now includes the <sys/mman.h> header file and memory
2189 management functions `mmap', `munmap', `mprotect', `msync', and
2190 `madvise', on systems that support those facilities.
2192 * The interface for `mcheck' has changed slightly: the function called to
2193 abort the program when an allocation inconsistency is detected now takes
2194 an argument that indicates the type of failure. The new function
2195 `mprobe' lets you request a consistency check for a particular block at
2196 any time (checks are normally done only when you call `free' or `realloc'
2199 * It is now possible to easily cross-compile the C library, building on one
2200 system a library to run on another machine and/or operating system. All
2201 you need to do is set the variable `HOST_CC' in `configparms' to the
2202 native compiler for programs to run on the machine you are building on (a
2203 few generator programs are used on Unix systems); set `CC' to the
2206 * The new function `fexecve' (only implemented on the GNU system) executes
2207 a program file given a file descriptor already open on the file.
2211 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2212 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2214 * You can set the variable `libprefix' in `configparms' to specify a prefix
2215 to be prepended to installed library files; this makes it easy to install
2216 the GNU C library to be linked as `-lgnuc' or whatever.
2218 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2219 copies a limited number of characters from a string, and returns the
2220 address of the last character written.
2222 * You no longer need to check for whether the installed `stddef.h' is
2223 compatible with the GNU C library. configure now checks for you.
2225 * You can now define a per-stream `fileno' function to convert the
2226 stream's cookie into an integral file descriptor.
2228 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2229 allocates zero bytes of storage, and returns a unique pointer which
2230 you can pass to `realloc' or `free'. The behavior is undefined if
2231 you dereference this pointer.
2233 * The C library now runs on Sony NEWS m68k machines running either
2234 NewsOS 3 or NewsOS 4.
2236 * The new `syscall' function is a system-dependent primitive function
2237 for invoking system calls. It has the canonical behavior on Unix
2238 systems, including unreliable return values for some calls (such as
2239 `pipe', `fork' and `getppid').
2241 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2242 to `EAGAIN', which is the preferred name. On systems whose kernels
2243 use two distinct codes, the C library now translates EWOULDBLOCK to
2244 EAGAIN in every system call function.
2248 * The GNU C Library Reference Manual is now distributed with the library.
2249 `make dvi' will produce a DVI file of the printed manual.
2250 `make info' will produce Info files that you can read on line using C-h i
2251 in Emacs or the `info' program.
2252 Please send comments on the manual to bug-glibc-manual@gnu.org.
2254 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2256 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2258 * Jason Merrill has contributed a port to the Sequent Symmetry running
2259 Dynix version 3 (i386-sequent-dynix).
2261 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2262 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2264 * New function `memory_warnings' lets you arrange to get warnings when
2265 malloc is running out of memory to allocate, like Emacs gives you.
2267 * The C library now contains the relocating allocator used in Emacs 19 for
2268 its editing buffers. This allocator (ralloc) minimizes allocation
2269 overhead and fragmentation by moving allocated regions around whenever it
2270 needs to. You always refer to a ralloc'd region with a "handle" (a
2271 pointer to a pointer--an object of type `void **').
2273 * There is a new `printf' format: `%m' gives you the string corresponding
2274 to the error code in `errno'.
2276 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2277 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2278 pass, the `a' modifier says to fill in a `char **' you pass with a
2281 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2282 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2283 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2285 * `mkstemp' is a traditional Unix function to atomically create and open a
2286 uniquely-named temporary file.
2290 * The standard location for the file that says what the local timezone is
2291 has changed again. It is now `/usr/local/etc/localtime' (or more
2292 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2294 * The distribution no longer contains any files with names longer than 14
2297 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2298 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2300 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2304 * The configuration process has changed quite a bit. The `configure'
2305 script is now used just like the configuration scripts for other GNU
2306 packages. The `sysdeps' directory hierarchy is much rearranged.
2307 The file `INSTALL' explains the new scheme in detail.
2309 * The header files no longer need to be processed into ANSI C and
2310 traditional C versions. There is just one set of files to install, and
2311 it will work with ANSI or old C compilers (including `gcc -traditional').
2313 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2314 MIPS DECStation running Ultrix 4.
2316 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2317 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2318 made itself into a shared library.
2320 * Yet further improved support for the i386, running 4.3 BSD-like systems
2321 (such as Mach 3 with the Unix single-server), or System V.
2323 * New function `strncasecmp' to do case-insensitive string comparison
2324 with limited length.
2326 * New function `strsep' is a reentrant alternative to `strtok'.
2328 * New functions `scandir' and `alphasort' for searching directories.
2330 * New function `setenv' is a better interface to `putenv'.
2332 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2333 function for traversing a directory tree.
2335 * The GNU obstack package is now also part of the C library.
2336 The new function `open_obstack_stream' creates a stdio stream that
2337 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2338 formatted output directly to an obstack.
2340 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2341 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2343 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2345 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2346 things to your strings.
2348 * There are some new test programs: test-fseek, testmb, and testrand.
2350 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2351 These ports are not finished, but are a good starting place for really
2352 supporting those systems.
2354 * `/etc/localtime' is now the standard location for the file that says what
2355 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2356 This follows the general principle that `/etc' is the place for all local
2357 configuration files.
2359 * The C library header files now use `extern "C"' when used by the C++
2360 compiler, so the C library should now work with C++ code.
2362 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2363 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2366 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2367 function which uses the `merge sort' algorithm, and is said to be
2368 significantly faster than the old GNU `qsort' function. Merge sort is
2369 now the standard `qsort' function. The new algorithm can require a lot
2370 of temporary storage; so, the old sorting function is called when the
2371 required storage is not available.
2373 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2374 provides the Unix `crypt' function, plus some other entry points.
2376 * The code and header files taken from 4.4 BSD have been updated with the
2377 latest files released from Berkeley.
2379 ----------------------------------------------------------------------
2380 Copyright information:
2382 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2384 Permission is granted to anyone to make or distribute verbatim copies
2385 of this document as received, in any medium, provided that the
2386 copyright notice and this permission notice are preserved,
2387 thus giving the recipient permission to redistribute in turn.
2389 Permission is granted to distribute modified versions
2390 of this document, or of portions of it,
2391 under the above conditions, provided also that they
2392 carry prominent notices stating who last changed them.
2395 version-control: never
git.samba.org / jlayton / glibc.git / blob