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, 15089, 15128, 15218, 15268, 15277, 15308, 15362,
16 15374, 15400, 15425, 15427, 15483, 15522, 15531, 15532, 15593, 15601,
17 15608, 15609, 15610, 15632, 15640, 15670, 15672, 15680, 15681, 15723,
18 15734, 15735, 15736, 15748, 15749, 15754, 15760, 15763, 15764, 15797,
19 15799, 15825, 15843, 15844, 15846, 15847, 15849, 15855, 15856, 15857,
20 15859, 15867, 15886, 15887, 15890, 15892, 15893, 15895, 15897, 15901,
21 15905, 15909, 15915, 15917, 15919, 15921, 15923, 15939, 15941, 15948,
22 15963, 15966, 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038,
23 16041, 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143,
24 16144, 16146, 16150, 16151, 16153, 16167, 16172, 16195, 16214, 16245,
27 * The public headers no longer use __unused nor __block. This change is to
28 support compiling programs that are derived from BSD sources and use
29 __unused internally, and to support compiling with Clang's -fblock
30 extension which uses __block.
32 * CVE-2012-4412 The strcoll implementation caches indices and rules for
33 large collation sequences to optimize multiple passes. This cache
34 computation may overflow for large collation sequences and may cause a
35 stack or buffer overflow. This is now fixed to use a slower algorithm
36 which does not use a cache if there is an integer overflow.
38 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
39 rules for large collation sequences to optimize multiple passes and falls
40 back to alloca if malloc fails, resulting in a possible stack overflow.
41 The implementation now falls back to an uncached collation sequence lookup
44 * CVE-2013-4788 The pointer guard used for pointer mangling was not
45 initialized for static applications resulting in the security feature
46 being disabled. The pointer guard is now correctly initialized to a
47 random value for static applications. Existing static applications need
48 to be recompiled to take advantage of the fix (bug 15754).
50 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
51 to the d_name member of struct dirent, or omit the terminating NUL
52 character. (Bugzilla #14699).
54 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
55 aligned_alloc functions could allocate too few bytes or corrupt the
56 heap when passed very large allocation size values (Bugzilla #15855,
59 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
60 for AF_INET6 has been fixed (Bugzilla #16072).
62 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
63 pap_CW, quz_PE, the_NP.
65 * Substantially revised locales: gd_GB, ht_HT
67 * The LC_ADDRESS field was updated to support country_car for almost all
70 * ISO 1427 definitions were updated.
72 * ISO 3166 definitions were updated.
74 * The localedef utility now supports --big-endian and --little-endian
75 command-line options to generate locales for a different system from that
76 for which the C library was built.
78 * Binary locale files now only depend on the endianness of the system for
79 which they are generated and not on other properties of that system. As a
80 consequence, binary files generated with new localedef may be incompatible
81 with old versions of the GNU C Library, and binary files generated with
82 old localedef may be incompatible with this version of the GNU C Library,
83 in the following circumstances:
85 + Locale files may be incompatible on m68k systems.
87 + Locale archive files (but not separate files for individual locales) may
88 be incompatible on systems where plain "char" is signed.
90 * The configure option --disable-versioning has been removed. Builds with
91 --disable-versioning had not worked for several years.
93 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
94 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
96 * SystemTap probes for malloc have been introduced.
98 * Support for powerpc64le has been added.
100 * The soft-float powerpc port now supports e500 processors.
102 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
104 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
105 set of header declarations that are enabled by default, even when other
106 feature test macros or compiler options such as -std=c99 would otherwise
107 disable some of those declarations.
109 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
110 conflict with POSIX. The libbsd-compat library (which was a dummy library
111 that did nothing) has also been removed.
115 * The following bugs are resolved with this release:
117 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
118 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
119 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
120 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
121 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
122 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
123 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
124 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
125 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
126 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
127 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
128 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
129 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
132 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
133 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
134 Distributions can re-enable building and using pt_chown via the new configure
135 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
136 considerable security risks and should only be used if the distribution
137 understands and accepts the risks.
139 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
142 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
143 fixed (Bugzilla #15330).
145 * Add support for calling C++11 thread_local object destructors on thread
146 and program exit. This needs compiler support for offloading C++11
147 destructor calls to glibc.
149 * Improved worst case performance of libm functions with double inputs and
152 * Support for priority inherited mutexes in pthread condition variables on
153 non-x86 architectures.
155 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
157 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
159 * Optimized string functions for ARM. Implemented by Will Newton and
162 * Optimized libm functions for SPARC. Implemented by David S. Miller.
164 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
167 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
168 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
170 * Added a benchmark framework to track performance of functions in glibc.
172 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
173 It is based on draft TS 18661 and currently enabled as a GNU extension.
175 * On Linux, the clock function now uses the clock_gettime system call
176 for improved precision, rather than old times system call.
178 * Added support for version-3 tz format files. This is needed when using
179 the tz database release 2013e or later, and affects a few unusual cases --
180 currently only TZ='America/Godthab' for time stamps after 2037.
182 * Added new API functions pthread_getattr_default_np and
183 pthread_setattr_default_np to get and set the default pthread
184 attributes of a process.
186 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
187 This may improve lock scaling of existing programs on TSX capable systems.
188 When the --enable-lock-elision=yes parameter is specified at configure
189 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
192 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
193 availability). Implemented by Ryan S. Arnold.
195 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
199 * The following bugs are resolved with this release:
201 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
202 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
203 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
204 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
205 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
206 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
207 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
208 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
209 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
210 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
211 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
212 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
213 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
214 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
215 14879, 14889, 14893, 14898, 14914.
217 * Optimization of memcpy for MIPS.
219 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
220 EMFILE has been fixed (Bugzilla #14889).
222 * The add-on ports collection is now distributed in the "ports" subdirectory
223 of the main GNU C Library distribution, rather than separately.
225 * Port to ARM AArch64 contributed by Linaro.
227 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
228 Optimized versions of memcpy, memset, and memcmp added for System z10 and
230 Implemented by Andreas Krebbel.
232 * The new function secure_getenv allows secure access to the environment,
233 returning NULL if running in a SUID/SGID process. This function replaces
234 the internal function __secure_getenv.
236 * SystemTap static probes have been added into the dynamic linker.
237 Implemented by Gary Benson.
239 * Optimizations of string functions strstr, strcasestr and memmem.
240 Implemented by Maxim Kuvyrkov.
242 * The minimum Linux kernel version that this version of the GNU C Library
243 can be used with is 2.6.16.
245 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
246 powerpc POWER7. Implemented by Will Schmidt.
248 * New configure option --disable-nscd builds the C library such that it
249 never attempts to contact the Name Service Caching Daemon (nscd).
250 New configure option --disable-build-nscd avoids building nscd itself;
251 this is the default if --disable-nscd is used.
253 * Improved support for cross-compilation, including cross-testing and
254 bootstrap builds without a previously built glibc.
256 * Several testsuite tests are now able to test multiple IFUNC variants of an
257 interface, rather than just testing the one that would be chooen by
260 * New configure options --with-bugurl and --with-pkgversion, for
261 distributors to use to embed their bug-reporting and package version
262 information in --help and --version output.
264 * The ttyname and ttyname_r functions on Linux now fall back to searching for
265 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
266 allows creation of chroots without the procfs mounted on /proc.
268 * The `crypt' function now fails if passed salt bytes that violate the
269 specification for those values. On Linux, the `crypt' function will
270 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
271 enabled, and fail on encrypted strings using the MD5 or DES algorithm
272 when the mode is enabled.
274 * The `clock_*' suite of functions (declared in <time.h>) is now available
275 directly in the main C library. Previously it was necessary to link with
276 -lrt to use these functions. This change has the effect that a
277 single-threaded program that uses a function such as `clock_gettime' (and
278 is not linked with -lrt) will no longer implicitly load the pthreads
279 library at runtime and so will not suffer the overheads associated with
280 multi-thread support in other code such as the C++ runtime library.
282 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
287 * The following bugs are resolved with this release:
289 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
290 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
291 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
292 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
293 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
294 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
295 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
296 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
297 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
298 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
299 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
300 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
301 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
302 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
303 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
304 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
305 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
306 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
307 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
308 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
309 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
310 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
313 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
314 configuring glibc with:
315 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
316 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
317 Implemented by H.J. Lu.
321 + define static_assert
323 + do not declare gets
325 + declare at_quick_exit and quick_exit also for ISO C11
327 + aligned_alloc. NB: The code is deliberately allows the size parameter
328 to not be a multiple of the alignment. This is a moronic requirement
329 in the standard but it is only a requirement on the caller, not the
334 + uchar.h support added
336 + CMPLX, CMPLXF, CMPLXL added
338 Implemented by Ulrich Drepper.
340 * Support for the IA-64 has been moved to ports.
342 * Remove support for anything but ELF binary format
344 * Checking versions of poll, ppoll added.
345 Implemented by Ulrich Drepper.
347 * More generic and 64-bit performance optimizations to math functions.
348 Implemented by Ulrich Drepper.
350 * New configure option --enable-obsolete-rpc makes the deprecated RPC
351 headers and functions available at compile time as they were before
352 version 2.14. This option will be removed at some time in the future
353 after the TI-RPC library becomes fully sufficient for the needs of
354 existing applications.
356 * Compatibility code for Linux kernel versions before 2.4 has been removed.
357 Note that glibc is not expected to work with any Linux kernel version
360 * New header <sys/auxv.h> and function getauxval allowing easy access to
361 the AT_* key-value pairs passed from the Linux kernel. The header also
362 defines the HWCAP_* bits associated with the AT_HWCAP key.
364 * New locales: mag_IN
366 * New configure option --enable-systemtap builds SystemTap static probes
367 into libc for setjmp and longjmp and into libpthread for various operations.
368 So far the setjmp/longjmp probes and some of the libpthread probes are
369 provided only for i*86 and x86_64.
370 Implemented by Roland McGrath and Rayson Ho.
372 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
374 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
377 * More optimized functions for SPARC. Implemented by David S. Miller.
379 * Improved support for cross-compilation, especially bootstrap builds
380 without a previously built glibc.
382 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
383 Chris Metcalf from Tilera.
385 * Support for the old ARM ABI has been removed from ports. Only the EABI is
386 now supported for ARM processors.
388 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
389 as the name of the dynamic linker, to distinguish it from the
390 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
392 * Support for CRIS has been removed from ports.
394 * A new class of installed header has been documented for low-level
395 platform-specific functionality. PowerPC added the first instance with a
396 function to provide time base register access. Contributed by Tulio
397 Magno Quites Machado Filho.
399 * ix86 configurations now install header files that are consistent with
400 what x86-64 configurations install. These same header files can be used
401 for -m32, -m64, or -mx32 builds.
402 Contributed by H.J. Lu.
404 * Math library bug fixes. A thorough audit of all open math library bugs was
405 conducted by Joseph Myers. Significant progress was made on many math
406 library bugs resulting in more accurate exceptions and function results.
407 Many thanks to all those that contributed including Andreas Jaeger for his
408 patch review and work on the x87 trigonometric instruction issues.
410 * Timezone data is no longer installed. Timezone-related binaries and scripts
411 will continue to be installed. Users should obtain their timezone data from
412 their distribution provider or from the tzdata package at
413 <ftp://munnari.oz.au/pub/>.
417 * The following bugs are resolved with this release:
419 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
420 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
421 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
422 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
423 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
424 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
425 13484, 13506, 13515, 13523, 13524, 13538, 13540
427 * New program pldd to list loaded object of a process
428 Implemented by Ulrich Drepper.
430 * Add nss_db support back to glibc. No more dependency on Berkeley db
431 and support for initgroups lookups.
432 Implemented by Ulrich Drepper.
434 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
435 Contributed by HJ Lu.
437 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
438 Contributed by HJ Lu.
440 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
441 on x86-32 and x86-64.
442 Contributed by Liubov Dmitrieva.
444 * Optimized strchr and strrchr for SSE on x86-32.
445 Contributed by Liubov Dmitrieva.
447 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
448 for x86-64 and x86-32.
449 Contributed by Liubov Dmitrieva.
451 * New interfaces: scandirat, scandirat64
452 Implemented by Ulrich Drepper.
454 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
455 Implemented by Ulrich Drepper.
457 * nscd now also caches the netgroup database.
458 Implemented by Ulrich Drepper.
460 * Integrate libm with gcc's -ffinite-math-only option.
461 Implemented by Ulrich Drepper.
463 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
464 to math functions. Implemented by Ulrich Drepper.
466 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
467 Implemented by Ulrich Drepper.
469 * New Linux interfaces: process_vm_readv, process_vm_writev
471 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
472 Implemented by Ulrich Drepper.
474 * Optimized nearbyint and strcasecmp for PPC.
475 Implemented by Adhemerval Zanella.
477 * New locales: bho_IN, unm_US, es_CU, ta_LK
481 * The following bugs are resolved with this release:
483 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
484 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
485 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
486 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
487 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
488 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
489 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
490 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
491 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
492 12795, 12811, 12813, 12814, 12841
494 * The RPC implementation in libc is obsoleted. Old programs keep working
495 but new programs cannot be linked with the routines in libc anymore.
496 Programs in need of RPC functionality must be linked against TI-RPC.
497 The TI-RPC implementation is IPv6 enabled and there are other benefits.
499 Visible changes of this change include (obviously) the inability to link
500 programs using RPC functions without referencing the TI-RPC library and the
501 removal of the RPC headers from the glibc headers.
502 Implemented by Ulrich Drepper.
504 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
505 syncfs, setns, sendmmsg
507 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
508 yue_HK, lij_IT, mhr_RU
510 * New encodings: CP770, CP771, CP772, CP773, CP774
512 * New program sotruss to trace calls through PLTs
513 Implemented by Ulrich Drepper.
515 * The malloc hook implementation is marked deprecated and will be removed
516 from the default implementation in the next version. The design never
517 worked ever since the introduction of threads. Even programs which do
518 not create threads themselves can use multiple threads created internally.
522 * The following bugs are resolved with this release:
524 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
525 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
526 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
527 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
530 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
532 * POWER7 optimizations: memset, memcmp, strncmp
534 * New optimized string functions for x86-64: strnlen (SSE2),
535 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
536 Implemented by Ulrich Drepper.
540 * The following bugs are resolved with this release:
542 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
543 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
544 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
545 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
546 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
547 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
548 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
549 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
551 * New interfaces: pthread_getname_np, pthread_setname_np
553 * New Linux interface: recvmmsg
555 * STT_GNU_IFUNC implemented for Sparc by David Miller.
557 * The dynamic linker now recognizes supported ABI versions from the
558 EI_ABIVERSION field in the ELF header.
559 Implemented by Ulrich Drepper.
561 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
562 will not be used to fill in password fields in the passwd.byname replies.
563 Instead it is used to synthesize the shadow.byname table, should it be
564 missing. This is a useful mode in some installations involving Solaris.
565 Implemented by Ulrich Drepper.
567 * New locales: kok_IN, sq_MK, cv_RU
571 * The following bugs are resolved with this release:
573 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
574 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
575 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
576 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
577 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
578 10789, 10817, 10823, 10840, 10847
580 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
582 Implemented by Ulrich Drepper.
584 * Checking version of longjmp added that fails if an uninitialized stack
585 frame would be created. Implemented by Ulrich Drepper.
587 * STT_GNU_IFUNC is now supported in static executables.
588 Implemented by H.J. Lu.
590 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
592 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
593 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
594 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
595 Contributed by H.J. Lu.
597 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
598 Implemented by Ulrich Drepper.
600 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
602 Contributed by H.J. Lu.
604 * Support for fma instruction in AVX on x86-64.
605 Implemented by H.J. Lu and Ulrich Drepper.
607 * AVX support in x86-64 auditing support in ld.so.
608 Implemented by H.J. Lu.
610 * STB_GNU_UNIQUE support added.
611 Implemented by Ulrich Drepper.
613 * Implement second fallback mode for optimized DNS lookup for even more
614 broken environments. If two requests from the same port are not
615 handled correctly close the socket and open a new one before sending
616 the second request. The 'single-request-reopen' option in /etc/resolv.conf
617 can be used to select this mode right away, instead of rediscovering the
618 necessity is every process again.
619 Implemented by Ulrich Drepper.
621 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
622 Implemented by Adam Tkac.
624 * Optimized iconv conversions for S390x.
625 Implemented by Andreas Krebbel.
627 * Using condvars with PI mutexes is now more efficient due to kernel
628 support for requeueing to PI futexes. NPTL support added for x86-64.
629 Implemented by Ulrich Drepper.
631 * New locales: ps_AF, my_MM
635 * The following bugs are resolved with this release:
637 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
638 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
639 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
640 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
641 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
643 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
644 Implemented by Ulrich Drepper.
646 * New Linux interfaces: accept4, fallocate, fallocate64.
647 Implemented by Ulrich Drepper.
649 * Correct declarations of string function when used in C++ code. This
650 could lead to compile errors for invalid C++ code.
652 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
655 * New POSIX 2008 interface: psiginfo
656 Implemented by Ulrich Drepper.
658 * New ISO C++1x interfaces: quick_exit, at_quick_exit
659 Implemented by Ulrich Drepper.
661 * Support for selecting between multiple function definitions at runtime
662 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
664 * The libcrypt library can now use the hash function implementations in
665 NSS. Implemented by Ulrich Drepper.
667 * The malloc implementation can be compiled to be less memory efficient
668 but higher performing in multi-threaded programs.
669 Implemented by Ulrich Drepper.
671 * New locales: nan_TW@latin, ks_IN
673 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
674 Implemented by Ulrich Drepper.
676 * Extended printf hook support. It is possible to use user-defined types
677 and extend existing format specifiers.
678 Implemented by Ulrich Drepper.
680 * Handling for group shadow files has been added.
681 Implemented by Ulrich Drepper.
683 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
684 servers (the case, e.g., for some people using the built-in DNS
685 server in ADSL modems/routers). There is a once-per-process timeout
686 in case of a broken server. To avoid it, users can run nscd or put
687 'options single-request' in /etc/resolv.conf.
688 Implemented by Ulrich Drepper.
692 * The following bugs are resolved with this release:
694 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
695 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
696 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
697 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
698 6968, 6974, 6980, 6995, 7008, 7009, 7029
700 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
701 up at the same time. Implemented by Ulrich Drepper.
703 * TLS descriptors for LD and GD on x86 and x86-64.
704 Implemented by Alexandre Oliva.
706 * getaddrinfo now handles DCCP and UDPlite.
707 Implemented by Ulrich Drepper.
709 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
710 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
711 Implemented by Ulrich Drepper.
713 * New implementation of memmem, strstr, and strcasestr which is O(n).
714 Implemented by Eric Blake.
716 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
718 * Implement "e" option for popen to open file descriptor with the
719 close-on-exec flag set. Implemented by Ulrich Drepper.
721 * Implement "b" mode for fmemopen. In this mode writes writes don't
722 implicitly add a NUL byte and seeks from the end of the buffer really
723 use the buffer end, not the string length as the basis.
724 Implemented by Ulrich Drepper.
726 * Many functions, exported and internal, now atomically set the close-on-exec
727 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
729 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
731 Implemented by Pravin Satpute.
733 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
737 * The following bugs are resolved with this release:
739 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
740 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
741 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
742 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
743 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
744 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
745 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
747 * New locales: bo_CN, bo_IN, shs_CA.
749 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
751 * Sorting rules for some Indian languages (Devanagari and Gujarati).
752 Implemented by Pravin Satpute.
754 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
756 * nscd caches now all timeouts for DNS entries
757 Implemented by Ulrich Drepper.
759 * nscd is more efficient and wakes up less often.
760 Implemented by Ulrich Drepper.
762 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
763 vdprintf, and obstack_vprintf.
764 Implemented by Jakub Jelinek.
766 * Faster memset for x86-64.
767 Implemented by Harsha Jagasia and H.J. Lu.
769 * Faster memcpy on x86.
770 Implemented by Ulrich Drepper.
772 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
773 Implemented by Ulrich Drepper.
775 * Faster sqrt and sqrtf implemention for some PPC variants.
776 Implemented by Steven Munroe.
780 * The following bugs are resolved with this release:
782 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
783 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
784 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
785 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
786 5071, 5103, 5104, 5112, 5113, 5184, 5186
788 * More checking functions: fread, fread_unlocked, open*, mq_open.
789 Implemented by Jakub Jelinek and Ulrich Drepper.
791 * Extend fortification to C++. Implemented by Jakub Jelinek.
793 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
794 by not recognizing 'a' as a modifier when those specs are requested.
795 Implemented by Jakub Jelinek.
797 * PPC optimizations to math and string functions.
798 Implemented by Steven Munroe.
800 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
801 options to be passed. Implemented by Ulrich Drepper.
803 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
805 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
806 Implemented by Ulrich Drepper.
808 * Handle private futexes in the NPTL implementation.
809 Implemented by Jakub Jelinek and Ulrich Drepper.
811 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
812 Implemented by Roland McGrath and Ulrich Drepper.
814 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
816 * SHA-256 and SHA-512 based password encryption.
817 Implemented by Ulrich Drepper.
819 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
820 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
823 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
824 Implemented by Ulrich Drepper.
828 * The following bugs are resolved with this release:
830 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
831 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
832 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
833 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
834 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
835 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
836 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
839 * New Linux interfaces: epoll_pwait, sched_getcpu.
841 * New generic interfaces: strerror_l.
843 * nscd can now cache the services database. Implemented by Ulrich Drepper.
847 * The following bugs are resolved with this release:
849 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
850 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
851 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
852 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
853 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
854 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
855 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
856 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
857 3225, 3251, 3252, 3253, 3273
859 * For Linux, the sorting of addresses returned by getaddrinfo now also
860 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
861 Implemented by Ulrich Drepper.
863 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
864 Implemented by Ulrich Drepper.
866 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
868 * New iconv module for MIK. Contributed by Alexander Shopov.
870 * For sites with broken group and/or passwd database, the auto-propagate
871 option of nscd can prevent creating ID lookup entries from the results
872 of a name lookup and vice versa. This usually is no problem but some
873 site might have problems with the default behavior.
874 Implemented by Ulrich Drepper.
876 * Iterating over entire database in NIS can be slow. With the
877 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
878 to trade time for memory. The entire database will be read at once.
879 Implemented by Ulrich Drepper.
881 * The interfaces introduced in RFC 3542 have been implemented by
884 * Support for the new ELF hash table format was added by Ulrich Drepper.
886 * Support for priority inheritance mutexes added by Jakub Jelinek and
889 * Support for priority protected mutexes added by Jakub Jelinek.
891 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
892 or_IN, csb_PL, fy_NL, sr_ME.
896 * More overflow detection functions.
898 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
899 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
901 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
902 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
903 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
904 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
905 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
906 by Masahide Washizawa.
908 * It is now possible to install audit libraries for the dynamic linker using
909 LD_AUDIT. Implemented by Ulrich Drepper.
911 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
912 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
913 For a libc and libpthread that works well on Linux 2.4 kernels, we
914 recommend using the stable 2.3 branch.
916 * The new function open_wmemstream acts like open_memstream,
917 but uses a wchar_t wide character buffer.
919 * The new function ppoll is an improved version of poll, similar to pselect.
921 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
922 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
923 renameat, unlinkat, linkat, symlinkat, readlinkat.
925 * New Linux kernel system calls: unshare,
926 inotify_init, inotify_add_watch, inotify_rm_watch.
928 * The euidaccess function is now also known by the alias eaccess,
929 for compatibility with some other systems.
931 * Timezone data updated to 2006b version.
935 * The following bugs are resolved with this release:
937 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
938 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
939 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
940 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
941 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
942 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
944 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
946 * As of this release, GCC 4 can be used to compile the C Library.
948 * Timezone data updated to 2005m version.
952 * The following bugs are resolved with this release:
954 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
955 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
956 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
957 777, 787, 821, 822, 823, 825
959 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
963 * Support for RFC 3678. Real implementations exist only for Linux so far.
964 Implemented by Ulrich Drepper.
966 * nscd can now cache entries persistently. Expiring entries are reloaded.
967 For speedups the cache can be shared in memory with client processes.
968 Implemented by Ulrich Drepper.
970 * nscd can now perform SELinux checks.
971 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
973 * getaddrinfo queries are now cached. Canonical name lookup is performed
975 Implemented by Ulrich Drepper.
977 * The nothrow function attribute is used when headers are used by gcc when
978 compiling C code. This can avoid significant amounts of exception
981 * The malloc functions perform more error checking and are stricter when
982 it comes to reacting on errors. The default action is to terminate
983 the process after showing an error message. Implemented by Ulrich Drepper.
985 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
986 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
988 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
989 namespaces using the new function dlmopen(). This feature is of course,
990 like most other dynamic loading functionality, not available in statically
991 linked applications. Implemented by Ulrich Drepper.
993 * Low-overhead boundary checking variants of string and some stdio functions
994 were added. These are to be used in conjunction with a gcc patch by
995 Jakub Jelinek which adds calls to these functions if possible.
996 Implemented by Jakub Jelinek and Ulrich Drepper.
998 * Old code for several operating systems and machine architectures that
999 have not been in working condition in a long time have been removed from
1000 the main source tree maintained by the GNU C Library's maintainers.
1001 These files are now reside in the separate `ports' source module
1002 that is usable as an add-on when building the library.
1006 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1007 interrogate the dynamic linker, compatible with the Solaris interface.
1009 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1010 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1012 * getifaddrs now uses the netlink interface on Linux to get its information.
1013 Implemented by Thorsten Kukuk.
1015 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1016 Implemented by Ulrich Drepper.
1018 * support for non-executable stacks on x86 has been added. Changes mostly
1021 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1024 * getaddrinfo now performs destination address selection according to
1029 * Thread-safe interfaces for many functions that access locale data
1030 were added in version 2.3, but these features were omitted from NEWS.
1031 Many functions have variants with an `_l' suffix that take a `locale_t'
1032 object as a parameter rather than consulting the current locale.
1033 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1034 create and maintain `locale_t' objects. Additionally, the new function
1035 `uselocale' sets "the current locale" (as used by functions not so
1036 parameterized) set for an individual thread. These features were added
1037 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1039 * The functions getresuid, getresgid, setresuid, and setresgid, which
1040 have long been available on Linux, are now declared in <unistd.h>
1041 and are now also available on the Hurd.
1043 * ELF thread-local storage support (TLS) now works on x86-64.
1045 * The new dynamic string token $LIB is expanded in shared library names.
1046 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1048 * Aldy Hernandez contributed complete software floating point support for
1049 PowerPC machines with no FPU.
1051 * fexecve is implemented on Linux.
1053 * The `btowc' function should work at least twice as fast due to
1054 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1056 * With approriate thread add-ons cancelable functions are now implemented
1057 in libc.so as well. No need to call the function in libpthread. This
1058 change allowed to finally disable the incorrect and expensive handling
1059 of weak definition in ld.so.
1061 * Yet more PLT entries in libc.so have been removed. We finally arrived
1062 at the bare minimum. Startup times improved appropriately.
1064 * Support for the new Linux/x86 system call interface was added. The
1065 AT_SYSINFO auxiliary vector entry is recognized and handled.
1069 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1072 * iconv (the program and the interface) now accepts empty names (excluding
1073 options like //TRANSLIT) to mean "use charset of current locale".
1075 * localedef can now transliterate characters in strings which are not in
1076 the provided charmap. The information from the input locale is used.
1078 * Prelinking support was added for ELF targets. This requires additional
1079 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1081 * Read-only stdio streams now use mmap to speed up operation by eliminating
1082 copying and buffer underflows. To use add 'm' to the mode string of
1083 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1085 * The malloc functions were completely rewritten by Wolfram Gloger based
1086 on Doug Lea's malloc-2.7.0.c.
1088 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1089 implementation of regex.
1091 * Bruno Haible upgraded the iconv and locale implementation to support
1094 * Contents of the LC_* and LANG environment variables in the CEN style are
1095 not recognized anymore. It never was used. Change by Ulrich Drepper.
1097 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1098 thread-local storage (TLS) ABI on some platforms.
1099 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1101 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1102 EUC-JISX0213, and TSCII.
1104 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1105 BSD-compatible interface for getting all network interface addresses.
1106 Implementation for IPv4 by Roland McGrath.
1108 * Loading of locale data is faster due to the introduction of a locale
1109 archive. Implemented by Roland McGrath and Ulrich Drepper.
1111 * Startup times are significantly reduced by not using exported functions
1112 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1115 * Steven Munroe contributed a port to PowerPC64/Linux.
1119 * The Hurd now uses the GNU libio implementation of stdio rather than the
1120 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1122 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1123 with the same behavior as the Linux system call of the same name.
1127 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1128 128-bit long double format.
1130 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1131 IBM1161, and IBM1162 charsets.
1133 * Andreas Jaeger contributed a port to x86-64/Linux.
1135 * Peter Bruin contributed a port to PowerPC/Hurd.
1137 * libc functions using I/O streams now can handle wide-oriented streams
1140 * optimizations in the dynamic linker. Binaries created by recent binutils
1141 versions start up quicker due to reduced time spent on relocations.
1143 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1147 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1148 asinh, atanh, j0 for the 128-bit long double format.
1150 * Bruno Haible updated all the code handling Unicode in some form to
1151 support Unicode 3.1.
1153 * Speed of regex for single-byte locales is back to previous levels.
1154 Patch by Isamu Hasegawa.
1156 * Alpha, SPARC, and IA-64 now also using floating stacks.
1158 * Startup time of internationalized applications greatly improved through
1159 iconv cache. Use iconvconfig to generate the cache file.
1160 Contributed by Ulrich Drepper.
1162 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1163 severe performance problems. Patch by David Mosberger.
1165 * The Hurd port got a lot more functionality like AIO, various stdio
1166 extensions, etc. Mainly done by Roland McGrath.
1168 * mtrace can now lookup symbols in shared libraries.
1172 * Intel's IA-64 math library is largely integrated. It provides fast and
1173 accurate implementatations for most basic and standard math functions
1174 in float, double, and long double format.
1176 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1177 and asin for the 96-bit long double format and asin, log, tan for the
1178 128-bit long double format.
1180 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1181 The basic double functions exist today. Contributed by Abraham Ziv
1182 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1183 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1185 * An asynchronous name lookup library was added. The interface is designed
1186 after POSIX AIO. The proposal was circulated beforehand to get comments.
1187 No negative ones came in. Implemented by Ulrich Drepper.
1189 * Port to S390/64bit contributed by Martin Schwidefsky
1190 <schwidefsky@de.ibm.com>.
1192 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1193 of functions for Linux/IA-64.
1195 * The RPC code is now thread safe. Threads can now use the same service
1196 of different services at the same time. Patch by Eric Norum
1197 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1199 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1200 family of functions for Linux/S390.
1202 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1203 of functions for Linux/x86.
1205 * Port to Linux/CRIS contributed by Axis Communications.
1209 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1210 we can now check for namespace violations and missing declarations. The
1211 result is that almost all headers are now Unix-compliant (as defined in
1212 the upcoming XPG6). The negative side is that some programs might need
1213 corrections, too, if they depend on the incorrect form of the headers in
1214 previous versions which defined too many symbols and included too many
1217 * regex now handles multibyte character sets correctly.
1218 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1220 * iconv (the program) does now conform to the upcoming XPG6 and handles
1221 charmaps. Instead of the charset names the path of charmaps can be
1222 provided and the conversion happens based on this data.
1223 Contributed by Ulrich Drepper.
1225 * The locale program now provides detailed information about the installed
1230 only lists the names of the supported locales
1234 provides details such as country, language, and codeset name.
1235 Contributed by Ulrich Drepper.
1239 * The gencat program now parses the input file according to the charset
1240 selected by the LC_CTYPE category. This is important for stateful
1241 character sets. To make generating catalogs easier there is a way
1242 to overwrite the charset selected by the locale: before the first
1243 message or $ quote line the catalog can contain a line like
1245 $ codeset=ISO-8859-2
1247 to select the charset (ISO-8859-2 in this case).
1249 Implemented by Shinya Hanataka and Ulrich Drepper.
1251 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1252 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1253 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1255 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1256 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1258 * The LANGUAGE environment variable is now ignored unless the locale is
1259 changed from the default "C" locale.
1261 * The usual bug fixes.
1265 * Greg McGary added runtime support for bounds checking using gcc's
1266 new -fbounded-pointers option. ix86 target is complete. PowerPC
1269 * Thorsten Kukuk added secure mode support to nscd.
1271 * The Berkeley db libraries have been removed.
1273 Related, the nss_db module is now in a separate package since it
1274 obviously requires a database library being available.
1276 * Wide character I/O streams implemented by Ulrich Drepper.
1278 * Functions from the extended socket API added by Ulrich Drepper.
1280 * Functions feenableexcept and fedisableexcept to control the
1281 behaviour of individual exceptions have been added by Andreas Jaeger.
1283 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1285 * The resolver code has been updated from bind 8.2.3-T5B which supports
1286 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1289 This change could in some situations effect backward compatibility. Since
1290 now `_res' is a thread-local instead of a global variable, modifying it
1291 in one thread does not have any effect in other threads.
1293 The resolver library was also extended to allow IPv6 as the transport
1294 protocol for the requests. This work was done by Stig Venaas.
1296 * Compatibility code for K&R C compilers has been removed from the
1297 header files. A ISO C compiler is needed to use the library
1298 (conforming to either C89 or C99 standard).
1300 * Complete rewrite of the localedef program to support multibyte character
1301 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1302 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1303 Implemented by Ulrich Drepper.
1305 Bruno Haible significantly improved the generation and use of the data
1306 structures for the wide character tables.
1308 * Plural handling in gettext implemented by Ulrich Drepper.
1310 * The utmp daemon has been removed.
1312 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1314 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1317 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1319 * POSIX barriers implemented by Kaz Kylheku.
1321 * POSIX spawn function family implemented by Ulrich Drepper.
1323 * POSIX spinlocks are now available.
1325 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1327 * the configure option --enable-kernel=X.Y.Z allows to strip out
1328 compatibility for kernel versions before X.Y.Z. This is currently only
1329 implemented for Linux.
1331 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1332 field sin6_scope_id. This means that all programs using IPv6 should be
1333 recompiled. Don't expect binary compatibility with previous glibc
1336 * various conversion modules for IBM character sets contributed by
1339 * IA-64 port by Jes Sorensen and HJ Lu.
1353 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1355 * New xdr functions are added; some rpc functions are now 64bit clean.
1357 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1359 * Fixed known incompatibilities with glibc 2.0.
1361 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1363 * Optimized a number of functions (especially the ELF dynamic loader).
1365 * Update timezone data files.
1367 * lots of charmaps corrections
1369 * some new locale definitions and charmaps
1374 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1375 conform to POSIX member type requirements. Symbol versions have been
1376 adjusted as needed within the library, and for direct use by applications,
1377 but there is potential for problems if third-party libraries use
1378 struct timeval as part of their interface. This does not present
1379 a problem for X and other "essential" system libraries.
1381 * An additional locale model to support C++ Standard Library locale
1382 model and probably more was implemented by Ulrich Drepper.
1384 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1387 * Miles Bader provided the `argp' function family to support hierachical
1388 command line argument parsing, layered on top of getopt.
1390 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1392 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1395 * scanf recognizes the %a and %A format for scanning floating point numbers.
1397 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1398 information and interfaces for the available integer types.
1400 * about 130 new math functions were added to implement the ISO C9x math
1403 * the new header <complex.h> contains definitions of the complex math
1404 functions from ISO C 9X.
1406 * the new header <tgmath.h> defines generic macros to use complex or
1407 real valued functions.
1409 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1411 * Andreas Jaeger provided a test suite for the math library.
1413 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1415 * Ulrich Drepper added character set conversion functions (iconv).
1417 * Optimized string functions have been added.
1419 * The localedata addon is now part of glibc.
1421 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1423 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1424 daemon for NSS (nscd).
1426 Missing a better place here are some numbers on improvements. Under
1427 Linux 2.1.125 un-tar-ing the kernel sources takes
1431 using local files 12.19s 6.88s 22.91s
1433 using NIS 13.92s 8.91s 26.34s
1435 using NIS & nscd 10.37s 7.34s 25.30s
1437 using NIS+ 27.57s 30.37s 640.46s
1439 using NIS+ & nscd 10.25s 7.83s 26.51s
1441 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1443 Keep in mind that non-namelookup related operations dominate above times.
1444 It was just a common complain that using NIS+ unpacking the kernel is
1447 [1] The old nscd implementation is not available anymore since it was
1448 distributed with glibc up to version 2.0.98 and thus is now replaced.
1450 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1452 * Mark Kettenis provided a Hesiod NSS module.
1454 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1455 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1457 * rcmd can now handle netgroups (Dick Streefland).
1459 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1462 * Support for the IPv6 protocol has been added to the socket API, as per the
1463 latest draft standards.
1465 * Support for Linux 2.2 has been added.
1467 * Interface changes relative to the latest 2.0.x release:
1468 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1469 addseverity NEW: Unix98
1470 alphasort64 NEW: LFS
1471 argp_err_exit_status NEW: argp, GNU ext
1472 argp_error NEW: argp, GNU ext
1473 argp_failure NEW: argp, GNU ext
1474 argp_help NEW: argp, GNU ext
1475 argp_parse NEW: argp, GNU ext
1476 argp_program_bug_address NEW: argp, GNU ext
1477 argp_program_version NEW: argp, GNU ext
1478 argp_program_version_hook NEW: argp, GNU ext
1479 argp_state_help NEW: argp, GNU ext
1480 argp_usage NEW: argp, GNU ext
1481 authdes_create NEW: Secure RPC
1482 authdes_getucred NEW: Secure RPC
1483 authdes_pk_create NEW: Secure RPC
1484 backtrace NEW: GNU ext.
1485 backtrace_symbols NEW: GNU ext.
1486 backtrace_symbols_fd NEW: GNU ext.
1488 cacosf NEW: ISO C 9x
1489 cacosh NEW: ISO C 9x
1490 cacoshf NEW: ISO C 9x
1491 cacoshl NEW: ISO C 9x
1492 cacosl NEW: ISO C 9x
1499 casinf NEW: ISO C 9x
1500 casinh NEW: ISO C 9x
1501 casinhf NEW: ISO C 9x
1502 casinhl NEW: ISO C 9x
1503 casinl NEW: ISO C 9x
1505 catanf NEW: ISO C 9x
1506 catanh NEW: ISO C 9x
1507 catanhf NEW: ISO C 9x
1508 catanhl NEW: ISO C 9x
1509 catanl NEW: ISO C 9x
1510 cbc_crypt NEW: Secure RPC
1514 ccoshf NEW: ISO C 9x
1515 ccoshl NEW: ISO C 9x
1521 cimagf NEW: ISO C 9x
1522 cimagl NEW: ISO C 9x
1523 clearerr_locked REMOVED
1524 clntunix_create NEW: sunrpc ext
1526 clog10 NEW: ISO C 9x
1527 clog10f NEW: ISO C 9x
1528 clog10l NEW: ISO C 9x
1538 cprojf NEW: ISO C 9x
1539 cprojl NEW: ISO C 9x
1541 crealf NEW: ISO C 9x
1542 creall NEW: ISO C 9x
1547 csinhf NEW: ISO C 9x
1548 csinhl NEW: ISO C 9x
1551 csqrtf NEW: ISO C 9x
1552 csqrtl NEW: ISO C 9x
1556 ctanhf NEW: ISO C 9x
1557 ctanhl NEW: ISO C 9x
1559 des_setparity NEW: Secure RPC
1560 ecb_crypt NEW: Secure RPC
1561 endutxent NEW: Unix98
1563 exp10f NEW: ISO C 9x
1564 exp10l NEW: ISO C 9x
1568 fattach NEW: STREAMS
1569 fdetach NEW: STREAMS
1573 feclearexcept NEW: ISO C 9x
1574 fegetenv NEW: ISO C 9x
1575 fegetexceptflag NEW: ISO C 9x
1576 fegetround NEW: ISO C 9x
1577 feholdexcept NEW: ISO C 9x
1579 feraiseexcept NEW: ISO C 9x
1580 ferror_locked REMOVED
1581 fesetenv NEW: ISO C 9x
1582 fesetexceptflag NEW: ISO C 9x
1583 fesetround NEW: ISO C 9x
1584 fetestexcept NEW: ISO C 9x
1585 feupdateenv NEW: ISO C 9x
1586 fflush_locked REMOVED
1590 fgets_unlocked NEW: GNU ext.
1591 fileno_locked REMOVED
1603 fputc_locked REMOVED
1604 fputs_unlocked NEW: GNU ext.
1605 fread_unlocked NEW: GNU ext.
1610 fstatvfs NEW: Unix98
1614 ftruncate64 NEW: LFS
1616 fwrite_unlocked NEW: GNU ext.
1617 gai_strerror NEW: IPv6
1621 getchar_locked REMOVED
1623 getdate_err NEW: Unix98
1624 getdate_r NEW: GNU ext.
1626 getnameinfo NEW: IPv6
1627 getnetname NEW: Secure RPC
1628 getpmsg NEW: STREAMS
1629 getpt NEW: Unix98 PTY
1630 getrlimit64 NEW: LFS
1631 getutxent NEW: Unix98
1632 getutxid NEW: Unix98
1633 getutxline NEW: Unix98
1634 glob64 NEW: GNU ext.
1635 globfree64 NEW: GNU ext.
1636 gnu_get_libc_release NEW: GNU ext.
1637 gnu_get_libc_version NEW: GNU ext.
1638 grantpt NEW: Unix98 PTY
1639 host2netname NEW: Secure RPC
1641 iconv_close NEW: iconv
1642 iconv_open NEW: iconv
1643 if_freenameindex NEW: IPv6
1644 if_indextoname NEW: IPv6
1645 if_nameindex NEW: IPv6
1646 if_nametoindex NEW: IPv6
1647 in6addr_any NEW: IPv6
1648 in6addr_loopback NEW: IPv6
1649 inet6_isipv4mapped NEW: IPv6
1650 isastream NEW: STREAMS
1651 iswblank NEW: GNU ext.
1652 key_decryptsession NEW: Secure RPC
1653 key_decryptsession_pk NEW: Secure RPC
1654 key_encryptsession NEW: Secure RPC
1655 key_encryptsession_pk NEW: Secure RPC
1656 key_gendes NEW: Secure RPC
1657 key_get_conv NEW: Secure RPC
1658 key_secretkey_is_set NEW: Secure RPC
1659 key_setnet NEW: Secure RPC
1660 key_setsecret NEW: Secure RPC
1661 llrint NEW: ISO C 9x
1662 llrintf NEW: ISO C 9x
1663 llrintl NEW: ISO C 9x
1664 llround NEW: ISO C 9x
1665 llroundf NEW: ISO C 9x
1666 llroundl NEW: ISO C 9x
1671 lrintf NEW: ISO C 9x
1672 lrintl NEW: ISO C 9x
1673 lround NEW: ISO C 9x
1674 lroundf NEW: ISO C 9x
1675 lroundl NEW: ISO C 9x
1677 makecontext NEW: Unix98
1678 mempcpy NEW: GNU ext.
1681 modify_ldt NEW: kernel
1685 nearbyint NEW: ISO C 9x
1686 nearbyintf NEW: ISO C 9x
1687 nearbyintl NEW: ISO C 9x
1688 netname2host NEW: Secure RPC
1689 netname2user NEW: Secure RPC
1690 nexttoward NEW: ISO C 9x
1691 nexttowardf NEW: ISO C 9x
1692 nexttowardl NEW: ISO C 9x
1696 passwd2des NEW: Secure RPC
1698 pow10f NEW: GNU ext.
1699 pow10l NEW: GNU ext.
1702 printf_size NEW: GNU ext.
1703 printf_size_info NEW: GNU ext.
1704 profil_counter REMOVED
1705 pthread_mutexattr_getkind_np REPLACED
1706 pthread_mutexattr_setkind_np REPLACED
1707 ptsname NEW: Unix98 PTY
1708 ptsname_r NEW: Unix98 PTY
1710 putchar_locked REMOVED
1711 putgrent NEW: GNU ext.
1713 putpmsg NEW: STREAMS
1714 pututxline NEW: Unix98
1718 readdir64_r NEW: LFS
1719 remquo NEW: ISO C 9x
1720 remquof NEW: ISO C 9x
1721 remquol NEW: ISO C 9x
1723 roundf NEW: ISO C 9x
1724 roundl NEW: ISO C 9x
1726 scalbln NEW: ISO C 9x
1727 scalblnf NEW: ISO C 9x
1728 scalblnl NEW: ISO C 9x
1730 sendfile NEW: kernel
1731 setcontext NEW: Unix98
1732 setrlimit64 NEW: LFS
1733 setutxent NEW: Unix98
1735 sigignore NEW: Unix98
1736 sigqueue NEW: POSIX.1b
1737 sigrelse NEW: Unix98
1738 sigset NEW: POSIX.1b
1739 sigtimedwait NEW: POSIX.1b
1740 sigwaitinfo NEW: POSIX.1b
1741 sincos NEW: GNU ext.
1742 sincosf NEW: GNU ext.
1743 sincosl NEW: GNU ext.
1747 strcasestr NEW: GNU ext.
1748 strtoimax NEW: ISO C 9x
1749 strtoumax NEW: ISO C 9x
1750 strverscmp NEW: GNU ext.
1751 svcauthdes_stats NEW: Secure RPC
1752 svcunix_create NEW: sunrpc etx
1753 svcunixfd_create NEW: sunrpc ext
1754 swapcontext NEW: Unix98
1755 tcgetsid NEW: Unix98 PTY
1756 tdestroy NEW: GNU ext.
1757 tgamma NEW: ISO C 9x
1758 tgammaf NEW: ISO C 9x
1759 tgammal NEW: ISO C 9x
1763 truncf NEW: ISO C 9x
1764 truncl NEW: ISO C 9x
1766 unlockpt NEW: Unix98 PTY
1767 updwtmpx NEW: Unix98
1768 user2netname NEW: Secure RPC
1769 utmpxname NEW: Unix98
1770 versionsort NEW: GNU ext.
1771 versionsort64 NEW: GNU ext.
1773 wcscasecmp NEW: GNU ext.
1774 wcsncasecmp NEW: GNU ext.
1775 wcsnlen NEW: GNU ext.
1776 wcstoimax NEW: ISO C 9x
1777 wcstoll NEW: ISO C 9x
1778 wcstoull NEW: ISO C 9x
1779 wcstoumax NEW: ISO C 9x
1781 wordexp NEW: POSIX.2
1782 wordfree NEW: POSIX.2
1783 write_profiling REMOVED
1784 xdecrypt NEW: Secure RPC
1785 xdr_authdes_cred NEW: Secure RPC
1786 xdr_authdes_verf NEW: Secure RPC
1787 xdr_cryptkeyarg NEW: Secure RPC
1788 xdr_cryptkeyarg2 NEW: Secure RPC
1789 xdr_cryptkeyres NEW: Secure RPC
1790 xdr_getcredres NEW: Secure RPC
1791 xdr_key_netstarg NEW: Secure RPC
1792 xdr_key_netstres NEW: Secure RPC
1793 xdr_keybuf NEW: Secure RPC
1794 xdr_keystatus NEW: Secure RPC
1795 xdr_netnamestr NEW: Secure RPC
1796 xdr_sizeof NEW: Secure RPC
1797 xdr_unixcred NEW: sunrpc ext
1798 xencrypt NEW: Secure RPC
1799 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1810 * inet_ntoa is thread-safe
1812 * updwtmp is moved from libutil to libc
1814 * rewrite of cbrt function
1816 * update of timezone data
1830 * add atoll function
1832 * fix complex problems in Berkeley DB code
1834 * fix math functions
1838 * fixed lots of header problems (especially Linux/GNU specific)
1840 * dynamic loader preserves all registers
1842 * Roland McGrath provided support for handling of auxiliary objects in
1843 the ELF dynamic loader.
1845 * support for parallel builds is improved
1849 * GNU extensions are no longer declared by default. To enable them you
1850 must define the macro `_GNU_SOURCE' in your program or compile with
1853 * The library has changed from using GNU ld symbol aliases to using weak
1854 symbols where available. The ELF object file format supports weak
1855 symbols; GNU ld also supports weak symbols in the a.out format. (There
1856 is also now support for other GNU ld extensions in ELF. Use the
1857 `--with-elf' option to configure to indicate you have ELF, and
1858 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1859 of many files which contained only symbol aliases, reducing the size of
1860 the source and the compiled library; many other files were renamed to
1861 less cryptic names previously occupied by the symbol alias files.
1862 There is a new header file <elf.h> for programs which operate on
1863 files in the ELF format.
1865 * Converted to Autoconf version 2, so `configure' has more options.
1866 Run `configure --help' to see the details.
1868 * The library can now be configured to build profiling, highly-optimized
1869 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1870 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1871 `configure' enable building these extra libraries. The shared library is
1872 built by default when using both ELF and GNU ld. When shared libraries
1873 are enabled, the new library `-ldl' is available for arbitrary run-time
1874 loading of shared objects; its interface is defined in <dlfcn.h>. The
1875 new header file <link.h> gives access to the internals of the run-time
1876 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1877 application of same name on other systems and it provides information
1878 about dynamically linked binaries.
1880 * The C library now provides the run-time support code for profiling
1881 executables compiled with `-pg'. Programs can control the profiling code
1882 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1883 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1884 the support for this file format was contributed by David Mosberger-Tang.
1886 * The math code has been replaced with a math library based on fdlibm from
1887 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1888 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1889 functions. The math functions now reside in a separate library, so
1890 programs using them will need to use `-lm' their linking commands.
1892 * John C. Bowman contributed optimized ix87 assembler inline functions.
1894 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1895 mechanism similar to that found in Solaris 2. This is now used for the
1896 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1897 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1898 file controls what services are used for each individual database. This
1899 works by loading shared libraries with names specified in `nsswitch.conf',
1900 so service modules can be changed or added at any time without even
1901 relinking any program. Currently there are the file, db, and NIS based
1902 NSS services available.
1904 * The new functions `strtoq' and `strtouq' parse integer values from
1905 strings, like `strtol' and `strtoul', but they return `long long int' and
1906 `unsigned long long int' values, respectively (64-bit quantities).
1908 * The new functions `strtof' and `strtold' parse floating-point values from
1909 strings, like `strtod', but they return `float' and `long double' values,
1910 respectively (on some machines `double' and `long double' are the same).
1912 * Ulrich Drepper has contributed new implementations of the floating-point
1913 printing and reading code used in the `printf' family of functions and
1914 `strtod', `strtof', and `strtold'. These new functions are perfectly
1915 accurate, and much faster than the old ones.
1917 * The implementation of the POSIX locale model was completely rewritten by
1918 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1919 to compile the POSIX locale definition.
1921 * The former dummy implementations of the strcoll and strxfrm function are
1922 now replaced by fully functional code contributed by Ulrich Drepper. The
1923 collation information comes from the POSIX locale definitions.
1925 * The new header <langinfo.h> defines an interface for accessing
1926 various locale-dependent data (using the locale chosen with `setlocale').
1928 * Ulrich Drepper has contributed a new suite of functions for operation on
1929 wide-character and multibyte-character strings, in <wchar.h>;
1930 and classification and case conversion of wide characters, in <wctype.h>.
1931 These new functions are conforming to the ISO C, Amendement 1 specification.
1933 * There is now a second implementation of the standard I/O library available.
1934 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1935 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1937 * You can now use positional parameter specifications in format strings
1938 for the `printf' and `scanf' families of functions. For example,
1939 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1940 ``Number 6, Mr Jones''. This is mainly useful when providing different
1941 format strings for different languages, whose grammars may dictate
1942 different orderings of the values being printed. To support this
1943 feature, the interface for `register_printf_handler' has changed; see
1944 the header file <printf.h> for details.
1946 * The `printf' and `scanf' families of functions now understand a new
1947 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1948 to group numbers as indicated by the locale; for `scanf' and friends, this
1949 says to accept as valid only a number with all the proper grouping
1950 separators in the right places. In the default "C" locale, numbers are
1951 not grouped; but locales for specific countries will define the usual
1952 conventions (i.e. separate thousands with `,' in the US locale).
1954 * The pgrp functions have been regularized, slightly incompatibly but much
1955 less confusingly. The core functions are now `getpgid' and `setpgid',
1956 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1957 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1958 provided for compatibility. There is no longer an incompatible `getpgrp'
1959 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1961 * The new header file <fts.h> and suite of functions simplify programs that
1962 operate on directory trees. This code comes from 4.4 BSD.
1964 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1965 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1966 NSS scheme used in glibc.
1968 * There is a new malloc debugging hook `__memalign_hook'.
1970 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1971 `unsigned int' in <sys/types.h>. These are for compatibility only and
1972 their use is discouraged.
1974 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1975 done differently, so that it works even without GNU ld.
1977 * New function `euidaccess' checks allowed access to a file like `access',
1978 but using the effective IDs instead of the real IDs.
1980 * The time zone data files have been updated for the latest and greatest
1981 local time conventions of the countries of the world.
1983 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1986 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1987 for formatting floating-point numbers. They are provided only for
1988 compatibility; new programs should use `sprintf' instead. There are
1989 also equivalent function for the `long double' floating-point type and
1990 all functions also exist in a reentrant form.
1992 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1993 functions for maintaining the login-record files (primarily of use to
1994 system programs such as `login'), and convenient functions for
1995 allocating and initializing a pseudo-terminal (pty) device.
1997 * Ulrich Drepper has contributed new support for System V style
1998 shared memory and IPC on systems that support it.
2000 * Ulrich Drepper has contributed several miscellaneous new functions found
2001 in System V: The `hsearch' family of functions provide an effective
2002 implementation of hash tables; `a64l' and `l64a' provide a very simple
2003 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2006 * Ulrich Drepper has contributed new reentrant counterparts for the
2007 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2009 * Ulrich Drepper has contributed new, highly-optimized versions of several
2010 string functions for the i486/Pentium family of processors.
2012 * Ulrich Drepper has updated the Linux-specific code, based largely
2013 on work done in Hongjiu Lu's version of GNU libc for Linux.
2014 The GNU library now supports Linux versions 2.0.10 and later,
2015 using the ELF object file format (i[3456]86-*-linux).
2017 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2019 * David Mosberger-Tang and Richard Henderson have ported the C library
2020 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2021 dynamic linking support for ELF/Alpha.
2023 * Richard Henderson contributed several Alpha optimized assembler function
2024 for arithmetic and string handling.
2026 * Ulrich Drepper has contributed a new set of message catalog functions to
2027 support multiple languages using the <libintl.h> interface, for use with
2028 his new package GNU gettext. Translation volunteers have contributed
2029 catalogs of the library's messages in Spanish, German, and Korean.
2031 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2032 program and the `catgets' function for reading the catalog files it
2033 creates. (The <libintl.h> interface is preferred; we include the
2034 <nl_types.h> interface using `catgets' only for source compatibility with
2035 programs already written to use it.)
2037 * New header file <values.h> gives SVID-compatible names for <limits.h>
2040 * Various new macros, declarations, and small header files for compatibility
2043 * New function `group_member' is a convenient way to check if a process has
2044 a given effective group ID.
2046 * When using GCC 2.7 and later, the socket functions are now declared in a
2047 special way so that passing an argument of type `struct sockaddr_in *',
2048 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2049 `struct sockaddr *' type, does not generate a type-clash warning.
2051 * New function `error' declared in header file <error.h> is a convenient
2052 function for printing error messages and optionally exiting; this is the
2053 canonical function used in GNU programs. The new functions `err', `warn',
2054 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2055 doing the same thing.
2057 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2058 POSIX.2 `glob' function to do ~ and {...} expansion.
2060 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2061 `clearenv' which is used in POSIX.9 is also available.
2063 * New function `getsid' returns session ID number on systems that support it.
2065 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2066 files <db.h> and <mpool.h> provide a rich set of functions for several
2067 types of simple databases stored in memory and in files, and <ndbm.h> is
2068 an old `ndbm'-compatible interface using the `db' functions. Link with
2069 `-ldb' to get these functions.
2071 * New macro `strdupa' copies a string like `strdup', but uses local stack
2072 space from `alloca' instead of dynamic heap space from `malloc'.
2074 * New function `strnlen' is like `strlen' but searches only a given maximum
2075 number of characters for the null terminator. `stpncpy', `strndup' and
2076 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2079 * New function `statfs' in header <sys/statfs.h>.
2081 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2082 provide convenient functions for operating on blocks of null-terminated
2085 * A new suite of functions in <utmp.h> handle all the details of reading
2086 and writing the utmp file.
2088 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2091 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2092 completely POSIX compliant and also implemented the extended functionality
2093 to handle alternate digit representation and alternate era date formats.
2095 * Ulrich Drepper provided an implementation of the `strptime' function
2096 defined in XPG4.2 which transforms a string into a `struct tm' value.
2098 * Paul Eggert provided the tzselect shell script as part of the timezone
2099 code. The shell script makes it easy to select the correct timezone
2102 * The implementation of the malloc family of functions is completely replaced
2103 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2104 The implementation uses the mmap function (if available) and it is
2105 optimized for the use in multi threaded programs.
2107 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2108 functions. This new functionality is usable by specifying a special
2109 salt string and it is compatible with implementation on *BSD systems.
2111 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2112 `getsubopt' to handle second level command line options, `bsd_signal'
2113 to access BSD style `signal' functionality, the obsolete `regexp' style
2116 * the `lchown' function is available on system which support this
2119 * The implementation of the shadow password handling function was contributed
2122 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2124 * POSIX.1g support was added. The <sys/select.h> header is available,
2125 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2126 implementation of `getaddrinfo'.
2130 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2132 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2133 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2135 * The new function `daemon' from 4.4 BSD is useful for server programs that
2136 want to put themselves in the background.
2138 * Joel Sherrill has contributed support for several standalone boards that
2139 run without an operating system.
2141 * `printf', `scanf' and friends now accept a `q' type modifier for long
2142 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2144 * All of the code taken from BSD (notably most of the math and networking
2145 routines) has been updated from the BSD 4.4-Lite release.
2147 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2149 * The new functions `getdomainname' and `setdomainname' fetch or change the
2150 YP/NIS domain name. These are system calls which exist on systems which
2153 * The time zone data files have been updated for the latest international
2156 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2157 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2161 * The C library now includes support for Sun RPC, from Sun's free
2162 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2163 are included. (There is still no support for YP.)
2165 * Tom Quinn has contributed a port of the C library to SGI machines running
2166 Irix 4 (mips-sgi-irix4).
2168 * The new `lockf' function is a simplified interface to the locking
2169 facilities of `fcntl', included for compatibility.
2171 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2173 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2175 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2178 * The error message printed by `assert' for a failed assertion now includes
2179 the name of the program (if using GNU ld) and the name of the calling
2180 function (with versions of GCC that support this).
2182 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2184 * The library now includes the <sys/mman.h> header file and memory
2185 management functions `mmap', `munmap', `mprotect', `msync', and
2186 `madvise', on systems that support those facilities.
2188 * The interface for `mcheck' has changed slightly: the function called to
2189 abort the program when an allocation inconsistency is detected now takes
2190 an argument that indicates the type of failure. The new function
2191 `mprobe' lets you request a consistency check for a particular block at
2192 any time (checks are normally done only when you call `free' or `realloc'
2195 * It is now possible to easily cross-compile the C library, building on one
2196 system a library to run on another machine and/or operating system. All
2197 you need to do is set the variable `HOST_CC' in `configparms' to the
2198 native compiler for programs to run on the machine you are building on (a
2199 few generator programs are used on Unix systems); set `CC' to the
2202 * The new function `fexecve' (only implemented on the GNU system) executes
2203 a program file given a file descriptor already open on the file.
2207 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2208 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2210 * You can set the variable `libprefix' in `configparms' to specify a prefix
2211 to be prepended to installed library files; this makes it easy to install
2212 the GNU C library to be linked as `-lgnuc' or whatever.
2214 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2215 copies a limited number of characters from a string, and returns the
2216 address of the last character written.
2218 * You no longer need to check for whether the installed `stddef.h' is
2219 compatible with the GNU C library. configure now checks for you.
2221 * You can now define a per-stream `fileno' function to convert the
2222 stream's cookie into an integral file descriptor.
2224 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2225 allocates zero bytes of storage, and returns a unique pointer which
2226 you can pass to `realloc' or `free'. The behavior is undefined if
2227 you dereference this pointer.
2229 * The C library now runs on Sony NEWS m68k machines running either
2230 NewsOS 3 or NewsOS 4.
2232 * The new `syscall' function is a system-dependent primitive function
2233 for invoking system calls. It has the canonical behavior on Unix
2234 systems, including unreliable return values for some calls (such as
2235 `pipe', `fork' and `getppid').
2237 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2238 to `EAGAIN', which is the preferred name. On systems whose kernels
2239 use two distinct codes, the C library now translates EWOULDBLOCK to
2240 EAGAIN in every system call function.
2244 * The GNU C Library Reference Manual is now distributed with the library.
2245 `make dvi' will produce a DVI file of the printed manual.
2246 `make info' will produce Info files that you can read on line using C-h i
2247 in Emacs or the `info' program.
2248 Please send comments on the manual to bug-glibc-manual@gnu.org.
2250 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2252 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2254 * Jason Merrill has contributed a port to the Sequent Symmetry running
2255 Dynix version 3 (i386-sequent-dynix).
2257 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2258 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2260 * New function `memory_warnings' lets you arrange to get warnings when
2261 malloc is running out of memory to allocate, like Emacs gives you.
2263 * The C library now contains the relocating allocator used in Emacs 19 for
2264 its editing buffers. This allocator (ralloc) minimizes allocation
2265 overhead and fragmentation by moving allocated regions around whenever it
2266 needs to. You always refer to a ralloc'd region with a "handle" (a
2267 pointer to a pointer--an object of type `void **').
2269 * There is a new `printf' format: `%m' gives you the string corresponding
2270 to the error code in `errno'.
2272 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2273 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2274 pass, the `a' modifier says to fill in a `char **' you pass with a
2277 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2278 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2279 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2281 * `mkstemp' is a traditional Unix function to atomically create and open a
2282 uniquely-named temporary file.
2286 * The standard location for the file that says what the local timezone is
2287 has changed again. It is now `/usr/local/etc/localtime' (or more
2288 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2290 * The distribution no longer contains any files with names longer than 14
2293 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2294 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2296 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2300 * The configuration process has changed quite a bit. The `configure'
2301 script is now used just like the configuration scripts for other GNU
2302 packages. The `sysdeps' directory hierarchy is much rearranged.
2303 The file `INSTALL' explains the new scheme in detail.
2305 * The header files no longer need to be processed into ANSI C and
2306 traditional C versions. There is just one set of files to install, and
2307 it will work with ANSI or old C compilers (including `gcc -traditional').
2309 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2310 MIPS DECStation running Ultrix 4.
2312 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2313 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2314 made itself into a shared library.
2316 * Yet further improved support for the i386, running 4.3 BSD-like systems
2317 (such as Mach 3 with the Unix single-server), or System V.
2319 * New function `strncasecmp' to do case-insensitive string comparison
2320 with limited length.
2322 * New function `strsep' is a reentrant alternative to `strtok'.
2324 * New functions `scandir' and `alphasort' for searching directories.
2326 * New function `setenv' is a better interface to `putenv'.
2328 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2329 function for traversing a directory tree.
2331 * The GNU obstack package is now also part of the C library.
2332 The new function `open_obstack_stream' creates a stdio stream that
2333 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2334 formatted output directly to an obstack.
2336 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2337 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2339 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2341 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2342 things to your strings.
2344 * There are some new test programs: test-fseek, testmb, and testrand.
2346 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2347 These ports are not finished, but are a good starting place for really
2348 supporting those systems.
2350 * `/etc/localtime' is now the standard location for the file that says what
2351 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2352 This follows the general principle that `/etc' is the place for all local
2353 configuration files.
2355 * The C library header files now use `extern "C"' when used by the C++
2356 compiler, so the C library should now work with C++ code.
2358 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2359 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2362 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2363 function which uses the `merge sort' algorithm, and is said to be
2364 significantly faster than the old GNU `qsort' function. Merge sort is
2365 now the standard `qsort' function. The new algorithm can require a lot
2366 of temporary storage; so, the old sorting function is called when the
2367 required storage is not available.
2369 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2370 provides the Unix `crypt' function, plus some other entry points.
2372 * The code and header files taken from 4.4 BSD have been updated with the
2373 latest files released from Berkeley.
2375 ----------------------------------------------------------------------
2376 Copyright information:
2378 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2380 Permission is granted to anyone to make or distribute verbatim copies
2381 of this document as received, in any medium, provided that the
2382 copyright notice and this permission notice are preserved,
2383 thus giving the recipient permission to redistribute in turn.
2385 Permission is granted to distribute modified versions
2386 of this document, or of portions of it,
2387 under the above conditions, provided also that they
2388 carry prominent notices stating who last changed them.
2391 version-control: never
projects / thirdparty / glibc.git / blob