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, 2801, 6786, 6787, 7003, 9954, 10253, 10278, 11087,
13 11157, 11214, 13028, 13982, 13985, 14029, 14032, 14143, 14155, 14547,
14 14699, 14752, 14876, 14910, 15004, 15048, 15218, 15268, 15277, 15308,
15 15362, 15374, 15400, 15425, 15427, 15483, 15522, 15531, 15532, 15601,
16 15608, 15609, 15610, 15632, 15640, 15670, 15672, 15680, 15681, 15723,
17 15734, 15735, 15736, 15748, 15749, 15754, 15760, 15763, 15764, 15797,
18 15799, 15825, 15844, 15847, 15849, 15855, 15856, 15857, 15859, 15867,
19 15886, 15887, 15890, 15892, 15893, 15895, 15897, 15905, 15909, 15917,
20 15919, 15921, 15923, 15939, 15948, 15963, 15966, 15985, 15988, 15997,
21 16032, 16034, 16036, 16037, 16041, 16055, 16071, 16072, 16074, 16077,
22 16078, 16103, 16112, 16143, 16144, 16146, 16150, 16151, 16153, 16167,
23 16172, 16195, 16214, 16245, 16271, 16283, 16289.
25 * The public headers no longer use __unused nor __block. This change is to
26 support compiling programs that are derived from BSD sources and use
27 __unused internally, and to support compiling with Clang's -fblock
28 extension which uses __block.
30 * CVE-2012-4412 The strcoll implementation caches indices and rules for
31 large collation sequences to optimize multiple passes. This cache
32 computation may overflow for large collation sequences and may cause a
33 stack or buffer overflow. This is now fixed to use a slower algorithm
34 which does not use a cache if there is an integer overflow.
36 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
37 rules for large collation sequences to optimize multiple passes and falls
38 back to alloca if malloc fails, resulting in a possible stack overflow.
39 The implementation now falls back to an uncached collation sequence lookup
42 * CVE-2013-4788 The pointer guard used for pointer mangling was not
43 initialized for static applications resulting in the security feature
44 being disabled. The pointer guard is now correctly initialized to a
45 random value for static applications. Existing static applications need
46 to be recompiled to take advantage of the fix (bug 15754).
48 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
49 to the d_name member of struct dirent, or omit the terminating NUL
50 character. (Bugzilla #14699).
52 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
53 aligned_alloc functions could allocate too few bytes or corrupt the
54 heap when passed very large allocation size values (Bugzilla #15855,
57 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
58 for AF_INET6 has been fixed (Bugzilla #16072).
60 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
61 pap_CW, quz_PE, the_NP.
63 * Substantially revised locales: gd_GB, ht_HT
65 * The LC_ADDRESS field was updated to support country_car for almost all
68 * ISO 1427 definitions were updated.
70 * ISO 3166 definitions were updated.
72 * The localedef utility now supports --big-endian and --little-endian
73 command-line options to generate locales for a different system from that
74 for which the C library was built.
76 * Binary locale files now only depend on the endianness of the system for
77 which they are generated and not on other properties of that system. As a
78 consequence, binary files generated with new localedef may be incompatible
79 with old versions of the GNU C Library, and binary files generated with
80 old localedef may be incompatible with this version of the GNU C Library,
81 in the following circumstances:
83 + Locale files may be incompatible on m68k systems.
85 + Locale archive files (but not separate files for individual locales) may
86 be incompatible on systems where plain "char" is signed.
88 * The configure option --disable-versioning has been removed. Builds with
89 --disable-versioning had not worked for several years.
91 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
92 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
94 * SystemTap probes for malloc have been introduced.
96 * Support for powerpc64le has been added.
98 * The soft-float powerpc port now supports e500 processors.
102 * The following bugs are resolved with this release:
104 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
105 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
106 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
107 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
108 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
109 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
110 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
111 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
112 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
113 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
114 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
115 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
116 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
119 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
120 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
121 Distributions can re-enable building and using pt_chown via the new configure
122 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
123 considerable security risks and should only be used if the distribution
124 understands and accepts the risks.
126 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
129 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
130 fixed (Bugzilla #15330).
132 * Add support for calling C++11 thread_local object destructors on thread
133 and program exit. This needs compiler support for offloading C++11
134 destructor calls to glibc.
136 * Improved worst case performance of libm functions with double inputs and
139 * Support for priority inherited mutexes in pthread condition variables on
140 non-x86 architectures.
142 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
144 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
146 * Optimized string functions for ARM. Implemented by Will Newton and
149 * Optimized libm functions for SPARC. Implemented by David S. Miller.
151 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
154 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
155 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
157 * Added a benchmark framework to track performance of functions in glibc.
159 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
160 It is based on draft TS 18661 and currently enabled as a GNU extension.
162 * On Linux, the clock function now uses the clock_gettime system call
163 for improved precision, rather than old times system call.
165 * Added new API functions pthread_getattr_default_np and
166 pthread_setattr_default_np to get and set the default pthread
167 attributes of a process.
169 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
170 This may improve lock scaling of existing programs on TSX capable systems.
171 When the --enable-lock-elision=yes parameter is specified at configure
172 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
175 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
176 availability). Implemented by Ryan S. Arnold.
178 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
182 * The following bugs are resolved with this release:
184 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
185 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
186 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
187 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
188 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
189 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
190 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
191 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
192 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
193 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
194 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
195 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
196 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
197 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
198 14879, 14889, 14893, 14898, 14914.
200 * Optimization of memcpy for MIPS.
202 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
203 EMFILE has been fixed (Bugzilla #14889).
205 * The add-on ports collection is now distributed in the "ports" subdirectory
206 of the main GNU C Library distribution, rather than separately.
208 * Port to ARM AArch64 contributed by Linaro.
210 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
211 Optimized versions of memcpy, memset, and memcmp added for System z10 and
213 Implemented by Andreas Krebbel.
215 * The new function secure_getenv allows secure access to the environment,
216 returning NULL if running in a SUID/SGID process. This function replaces
217 the internal function __secure_getenv.
219 * SystemTap static probes have been added into the dynamic linker.
220 Implemented by Gary Benson.
222 * Optimizations of string functions strstr, strcasestr and memmem.
223 Implemented by Maxim Kuvyrkov.
225 * The minimum Linux kernel version that this version of the GNU C Library
226 can be used with is 2.6.16.
228 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
229 powerpc POWER7. Implemented by Will Schmidt.
231 * New configure option --disable-nscd builds the C library such that it
232 never attempts to contact the Name Service Caching Daemon (nscd).
233 New configure option --disable-build-nscd avoids building nscd itself;
234 this is the default if --disable-nscd is used.
236 * Improved support for cross-compilation, including cross-testing and
237 bootstrap builds without a previously built glibc.
239 * Several testsuite tests are now able to test multiple IFUNC variants of an
240 interface, rather than just testing the one that would be chooen by
243 * New configure options --with-bugurl and --with-pkgversion, for
244 distributors to use to embed their bug-reporting and package version
245 information in --help and --version output.
247 * The ttyname and ttyname_r functions on Linux now fall back to searching for
248 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
249 allows creation of chroots without the procfs mounted on /proc.
251 * The `crypt' function now fails if passed salt bytes that violate the
252 specification for those values. On Linux, the `crypt' function will
253 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
254 enabled, and fail on encrypted strings using the MD5 or DES algorithm
255 when the mode is enabled.
257 * The `clock_*' suite of functions (declared in <time.h>) is now available
258 directly in the main C library. Previously it was necessary to link with
259 -lrt to use these functions. This change has the effect that a
260 single-threaded program that uses a function such as `clock_gettime' (and
261 is not linked with -lrt) will no longer implicitly load the pthreads
262 library at runtime and so will not suffer the overheads associated with
263 multi-thread support in other code such as the C++ runtime library.
265 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
270 * The following bugs are resolved with this release:
272 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
273 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
274 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
275 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
276 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
277 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
278 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
279 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
280 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
281 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
282 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
283 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
284 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
285 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
286 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
287 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
288 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
289 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
290 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
291 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
292 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
293 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
296 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
297 configuring glibc with:
298 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
299 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
300 Implemented by H.J. Lu.
304 + define static_assert
306 + do not declare gets
308 + declare at_quick_exit and quick_exit also for ISO C11
310 + aligned_alloc. NB: The code is deliberately allows the size parameter
311 to not be a multiple of the alignment. This is a moronic requirement
312 in the standard but it is only a requirement on the caller, not the
317 + uchar.h support added
319 + CMPLX, CMPLXF, CMPLXL added
321 Implemented by Ulrich Drepper.
323 * Support for the IA-64 has been moved to ports.
325 * Remove support for anything but ELF binary format
327 * Checking versions of poll, ppoll added.
328 Implemented by Ulrich Drepper.
330 * More generic and 64-bit performance optimizations to math functions.
331 Implemented by Ulrich Drepper.
333 * New configure option --enable-obsolete-rpc makes the deprecated RPC
334 headers and functions available at compile time as they were before
335 version 2.14. This option will be removed at some time in the future
336 after the TI-RPC library becomes fully sufficient for the needs of
337 existing applications.
339 * Compatibility code for Linux kernel versions before 2.4 has been removed.
340 Note that glibc is not expected to work with any Linux kernel version
343 * New header <sys/auxv.h> and function getauxval allowing easy access to
344 the AT_* key-value pairs passed from the Linux kernel. The header also
345 defines the HWCAP_* bits associated with the AT_HWCAP key.
347 * New locales: mag_IN
349 * New configure option --enable-systemtap builds SystemTap static probes
350 into libc for setjmp and longjmp and into libpthread for various operations.
351 So far the setjmp/longjmp probes and some of the libpthread probes are
352 provided only for i*86 and x86_64.
353 Implemented by Roland McGrath and Rayson Ho.
355 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
357 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
360 * More optimized functions for SPARC. Implemented by David S. Miller.
362 * Improved support for cross-compilation, especially bootstrap builds
363 without a previously built glibc.
365 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
366 Chris Metcalf from Tilera.
368 * Support for the old ARM ABI has been removed from ports. Only the EABI is
369 now supported for ARM processors.
371 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
372 as the name of the dynamic linker, to distinguish it from the
373 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
375 * Support for CRIS has been removed from ports.
377 * A new class of installed header has been documented for low-level
378 platform-specific functionality. PowerPC added the first instance with a
379 function to provide time base register access. Contributed by Tulio
380 Magno Quites Machado Filho.
382 * ix86 configurations now install header files that are consistent with
383 what x86-64 configurations install. These same header files can be used
384 for -m32, -m64, or -mx32 builds.
385 Contributed by H.J. Lu.
387 * Math library bug fixes. A thorough audit of all open math library bugs was
388 conducted by Joseph Myers. Significant progress was made on many math
389 library bugs resulting in more accurate exceptions and function results.
390 Many thanks to all those that contributed including Andreas Jaeger for his
391 patch review and work on the x87 trigonometric instruction issues.
393 * Timezone data is no longer installed. Timezone-related binaries and scripts
394 will continue to be installed. Users should obtain their timezone data from
395 their distribution provider or from the tzdata package at
396 <ftp://munnari.oz.au/pub/>.
400 * The following bugs are resolved with this release:
402 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
403 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
404 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
405 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
406 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
407 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
408 13484, 13506, 13515, 13523, 13524, 13538, 13540
410 * New program pldd to list loaded object of a process
411 Implemented by Ulrich Drepper.
413 * Add nss_db support back to glibc. No more dependency on Berkeley db
414 and support for initgroups lookups.
415 Implemented by Ulrich Drepper.
417 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
418 Contributed by HJ Lu.
420 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
421 Contributed by HJ Lu.
423 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
424 on x86-32 and x86-64.
425 Contributed by Liubov Dmitrieva.
427 * Optimized strchr and strrchr for SSE on x86-32.
428 Contributed by Liubov Dmitrieva.
430 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
431 for x86-64 and x86-32.
432 Contributed by Liubov Dmitrieva.
434 * New interfaces: scandirat, scandirat64
435 Implemented by Ulrich Drepper.
437 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
438 Implemented by Ulrich Drepper.
440 * nscd now also caches the netgroup database.
441 Implemented by Ulrich Drepper.
443 * Integrate libm with gcc's -ffinite-math-only option.
444 Implemented by Ulrich Drepper.
446 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
447 to math functions. Implemented by Ulrich Drepper.
449 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
450 Implemented by Ulrich Drepper.
452 * New Linux interfaces: process_vm_readv, process_vm_writev
454 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
455 Implemented by Ulrich Drepper.
457 * Optimized nearbyint and strcasecmp for PPC.
458 Implemented by Adhemerval Zanella.
460 * New locales: bho_IN, unm_US, es_CU, ta_LK
464 * The following bugs are resolved with this release:
466 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
467 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
468 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
469 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
470 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
471 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
472 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
473 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
474 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
475 12795, 12811, 12813, 12814, 12841
477 * The RPC implementation in libc is obsoleted. Old programs keep working
478 but new programs cannot be linked with the routines in libc anymore.
479 Programs in need of RPC functionality must be linked against TI-RPC.
480 The TI-RPC implementation is IPv6 enabled and there are other benefits.
482 Visible changes of this change include (obviously) the inability to link
483 programs using RPC functions without referencing the TI-RPC library and the
484 removal of the RPC headers from the glibc headers.
485 Implemented by Ulrich Drepper.
487 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
488 syncfs, setns, sendmmsg
490 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
491 yue_HK, lij_IT, mhr_RU
493 * New encodings: CP770, CP771, CP772, CP773, CP774
495 * New program sotruss to trace calls through PLTs
496 Implemented by Ulrich Drepper.
498 * The malloc hook implementation is marked deprecated and will be removed
499 from the default implementation in the next version. The design never
500 worked ever since the introduction of threads. Even programs which do
501 not create threads themselves can use multiple threads created internally.
505 * The following bugs are resolved with this release:
507 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
508 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
509 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
510 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
513 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
515 * POWER7 optimizations: memset, memcmp, strncmp
517 * New optimized string functions for x86-64: strnlen (SSE2),
518 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
519 Implemented by Ulrich Drepper.
523 * The following bugs are resolved with this release:
525 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
526 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
527 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
528 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
529 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
530 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
531 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
532 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
534 * New interfaces: pthread_getname_np, pthread_setname_np
536 * New Linux interface: recvmmsg
538 * STT_GNU_IFUNC implemented for Sparc by David Miller.
540 * The dynamic linker now recognizes supported ABI versions from the
541 EI_ABIVERSION field in the ELF header.
542 Implemented by Ulrich Drepper.
544 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
545 will not be used to fill in password fields in the passwd.byname replies.
546 Instead it is used to synthesize the shadow.byname table, should it be
547 missing. This is a useful mode in some installations involving Solaris.
548 Implemented by Ulrich Drepper.
550 * New locales: kok_IN, sq_MK, cv_RU
554 * The following bugs are resolved with this release:
556 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
557 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
558 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
559 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
560 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
561 10789, 10817, 10823, 10840, 10847
563 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
565 Implemented by Ulrich Drepper.
567 * Checking version of longjmp added that fails if an uninitialized stack
568 frame would be created. Implemented by Ulrich Drepper.
570 * STT_GNU_IFUNC is now supported in static executables.
571 Implemented by H.J. Lu.
573 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
575 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
576 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
577 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
578 Contributed by H.J. Lu.
580 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
581 Implemented by Ulrich Drepper.
583 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
585 Contributed by H.J. Lu.
587 * Support for fma instruction in AVX on x86-64.
588 Implemented by H.J. Lu and Ulrich Drepper.
590 * AVX support in x86-64 auditing support in ld.so.
591 Implemented by H.J. Lu.
593 * STB_GNU_UNIQUE support added.
594 Implemented by Ulrich Drepper.
596 * Implement second fallback mode for optimized DNS lookup for even more
597 broken environments. If two requests from the same port are not
598 handled correctly close the socket and open a new one before sending
599 the second request. The 'single-request-reopen' option in /etc/resolv.conf
600 can be used to select this mode right away, instead of rediscovering the
601 necessity is every process again.
602 Implemented by Ulrich Drepper.
604 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
605 Implemented by Adam Tkac.
607 * Optimized iconv conversions for S390x.
608 Implemented by Andreas Krebbel.
610 * Using condvars with PI mutexes is now more efficient due to kernel
611 support for requeueing to PI futexes. NPTL support added for x86-64.
612 Implemented by Ulrich Drepper.
614 * New locales: ps_AF, my_MM
618 * The following bugs are resolved with this release:
620 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
621 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
622 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
623 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
624 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
626 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
627 Implemented by Ulrich Drepper.
629 * New Linux interfaces: accept4, fallocate, fallocate64.
630 Implemented by Ulrich Drepper.
632 * Correct declarations of string function when used in C++ code. This
633 could lead to compile errors for invalid C++ code.
635 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
638 * New POSIX 2008 interface: psiginfo
639 Implemented by Ulrich Drepper.
641 * New ISO C++1x interfaces: quick_exit, at_quick_exit
642 Implemented by Ulrich Drepper.
644 * Support for selecting between multiple function definitions at runtime
645 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
647 * The libcrypt library can now use the hash function implementations in
648 NSS. Implemented by Ulrich Drepper.
650 * The malloc implementation can be compiled to be less memory efficient
651 but higher performing in multi-threaded programs.
652 Implemented by Ulrich Drepper.
654 * New locales: nan_TW@latin, ks_IN
656 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
657 Implemented by Ulrich Drepper.
659 * Extended printf hook support. It is possible to use user-defined types
660 and extend existing format specifiers.
661 Implemented by Ulrich Drepper.
663 * Handling for group shadow files has been added.
664 Implemented by Ulrich Drepper.
666 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
667 servers (the case, e.g., for some people using the built-in DNS
668 server in ADSL modems/routers). There is a once-per-process timeout
669 in case of a broken server. To avoid it, users can run nscd or put
670 'options single-request' in /etc/resolv.conf.
671 Implemented by Ulrich Drepper.
675 * The following bugs are resolved with this release:
677 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
678 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
679 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
680 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
681 6968, 6974, 6980, 6995, 7008, 7009, 7029
683 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
684 up at the same time. Implemented by Ulrich Drepper.
686 * TLS descriptors for LD and GD on x86 and x86-64.
687 Implemented by Alexandre Oliva.
689 * getaddrinfo now handles DCCP and UDPlite.
690 Implemented by Ulrich Drepper.
692 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
693 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
694 Implemented by Ulrich Drepper.
696 * New implementation of memmem, strstr, and strcasestr which is O(n).
697 Implemented by Eric Blake.
699 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
701 * Implement "e" option for popen to open file descriptor with the
702 close-on-exec flag set. Implemented by Ulrich Drepper.
704 * Implement "b" mode for fmemopen. In this mode writes writes don't
705 implicitly add a NUL byte and seeks from the end of the buffer really
706 use the buffer end, not the string length as the basis.
707 Implemented by Ulrich Drepper.
709 * Many functions, exported and internal, now atomically set the close-on-exec
710 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
712 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
714 Implemented by Pravin Satpute.
716 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
720 * The following bugs are resolved with this release:
722 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
723 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
724 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
725 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
726 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
727 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
728 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
730 * New locales: bo_CN, bo_IN, shs_CA.
732 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
734 * Sorting rules for some Indian languages (Devanagari and Gujarati).
735 Implemented by Pravin Satpute.
737 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
739 * nscd caches now all timeouts for DNS entries
740 Implemented by Ulrich Drepper.
742 * nscd is more efficient and wakes up less often.
743 Implemented by Ulrich Drepper.
745 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
746 vdprintf, and obstack_vprintf.
747 Implemented by Jakub Jelinek.
749 * Faster memset for x86-64.
750 Implemented by Harsha Jagasia and H.J. Lu.
752 * Faster memcpy on x86.
753 Implemented by Ulrich Drepper.
755 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
756 Implemented by Ulrich Drepper.
758 * Faster sqrt and sqrtf implemention for some PPC variants.
759 Implemented by Steven Munroe.
763 * The following bugs are resolved with this release:
765 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
766 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
767 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
768 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
769 5071, 5103, 5104, 5112, 5113, 5184, 5186
771 * More checking functions: fread, fread_unlocked, open*, mq_open.
772 Implemented by Jakub Jelinek and Ulrich Drepper.
774 * Extend fortification to C++. Implemented by Jakub Jelinek.
776 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
777 by not recognizing 'a' as a modifier when those specs are requested.
778 Implemented by Jakub Jelinek.
780 * PPC optimizations to math and string functions.
781 Implemented by Steven Munroe.
783 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
784 options to be passed. Implemented by Ulrich Drepper.
786 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
788 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
789 Implemented by Ulrich Drepper.
791 * Handle private futexes in the NPTL implementation.
792 Implemented by Jakub Jelinek and Ulrich Drepper.
794 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
795 Implemented by Roland McGrath and Ulrich Drepper.
797 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
799 * SHA-256 and SHA-512 based password encryption.
800 Implemented by Ulrich Drepper.
802 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
803 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
806 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
807 Implemented by Ulrich Drepper.
811 * The following bugs are resolved with this release:
813 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
814 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
815 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
816 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
817 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
818 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
819 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
822 * New Linux interfaces: epoll_pwait, sched_getcpu.
824 * New generic interfaces: strerror_l.
826 * nscd can now cache the services database. Implemented by Ulrich Drepper.
830 * The following bugs are resolved with this release:
832 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
833 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
834 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
835 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
836 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
837 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
838 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
839 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
840 3225, 3251, 3252, 3253, 3273
842 * For Linux, the sorting of addresses returned by getaddrinfo now also
843 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
844 Implemented by Ulrich Drepper.
846 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
847 Implemented by Ulrich Drepper.
849 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
851 * New iconv module for MIK. Contributed by Alexander Shopov.
853 * For sites with broken group and/or passwd database, the auto-propagate
854 option of nscd can prevent creating ID lookup entries from the results
855 of a name lookup and vice versa. This usually is no problem but some
856 site might have problems with the default behavior.
857 Implemented by Ulrich Drepper.
859 * Iterating over entire database in NIS can be slow. With the
860 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
861 to trade time for memory. The entire database will be read at once.
862 Implemented by Ulrich Drepper.
864 * The interfaces introduced in RFC 3542 have been implemented by
867 * Support for the new ELF hash table format was added by Ulrich Drepper.
869 * Support for priority inheritance mutexes added by Jakub Jelinek and
872 * Support for priority protected mutexes added by Jakub Jelinek.
874 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
875 or_IN, csb_PL, fy_NL, sr_ME.
879 * More overflow detection functions.
881 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
882 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
884 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
885 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
886 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
887 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
888 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
889 by Masahide Washizawa.
891 * It is now possible to install audit libraries for the dynamic linker using
892 LD_AUDIT. Implemented by Ulrich Drepper.
894 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
895 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
896 For a libc and libpthread that works well on Linux 2.4 kernels, we
897 recommend using the stable 2.3 branch.
899 * The new function open_wmemstream acts like open_memstream,
900 but uses a wchar_t wide character buffer.
902 * The new function ppoll is an improved version of poll, similar to pselect.
904 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
905 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
906 renameat, unlinkat, linkat, symlinkat, readlinkat.
908 * New Linux kernel system calls: unshare,
909 inotify_init, inotify_add_watch, inotify_rm_watch.
911 * The euidaccess function is now also known by the alias eaccess,
912 for compatibility with some other systems.
914 * Timezone data updated to 2006b version.
918 * The following bugs are resolved with this release:
920 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
921 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
922 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
923 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
924 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
925 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
927 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
929 * As of this release, GCC 4 can be used to compile the C Library.
931 * Timezone data updated to 2005m version.
935 * The following bugs are resolved with this release:
937 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
938 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
939 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
940 777, 787, 821, 822, 823, 825
942 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
946 * Support for RFC 3678. Real implementations exist only for Linux so far.
947 Implemented by Ulrich Drepper.
949 * nscd can now cache entries persistently. Expiring entries are reloaded.
950 For speedups the cache can be shared in memory with client processes.
951 Implemented by Ulrich Drepper.
953 * nscd can now perform SELinux checks.
954 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
956 * getaddrinfo queries are now cached. Canonical name lookup is performed
958 Implemented by Ulrich Drepper.
960 * The nothrow function attribute is used when headers are used by gcc when
961 compiling C code. This can avoid significant amounts of exception
964 * The malloc functions perform more error checking and are stricter when
965 it comes to reacting on errors. The default action is to terminate
966 the process after showing an error message. Implemented by Ulrich Drepper.
968 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
969 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
971 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
972 namespaces using the new function dlmopen(). This feature is of course,
973 like most other dynamic loading functionality, not available in statically
974 linked applications. Implemented by Ulrich Drepper.
976 * Low-overhead boundary checking variants of string and some stdio functions
977 were added. These are to be used in conjunction with a gcc patch by
978 Jakub Jelinek which adds calls to these functions if possible.
979 Implemented by Jakub Jelinek and Ulrich Drepper.
981 * Old code for several operating systems and machine architectures that
982 have not been in working condition in a long time have been removed from
983 the main source tree maintained by the GNU C Library's maintainers.
984 These files are now reside in the separate `ports' source module
985 that is usable as an add-on when building the library.
989 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
990 interrogate the dynamic linker, compatible with the Solaris interface.
992 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
993 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
995 * getifaddrs now uses the netlink interface on Linux to get its information.
996 Implemented by Thorsten Kukuk.
998 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
999 Implemented by Ulrich Drepper.
1001 * support for non-executable stacks on x86 has been added. Changes mostly
1004 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1007 * getaddrinfo now performs destination address selection according to
1012 * Thread-safe interfaces for many functions that access locale data
1013 were added in version 2.3, but these features were omitted from NEWS.
1014 Many functions have variants with an `_l' suffix that take a `locale_t'
1015 object as a parameter rather than consulting the current locale.
1016 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1017 create and maintain `locale_t' objects. Additionally, the new function
1018 `uselocale' sets "the current locale" (as used by functions not so
1019 parameterized) set for an individual thread. These features were added
1020 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1022 * The functions getresuid, getresgid, setresuid, and setresgid, which
1023 have long been available on Linux, are now declared in <unistd.h>
1024 and are now also available on the Hurd.
1026 * ELF thread-local storage support (TLS) now works on x86-64.
1028 * The new dynamic string token $LIB is expanded in shared library names.
1029 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1031 * Aldy Hernandez contributed complete software floating point support for
1032 PowerPC machines with no FPU.
1034 * fexecve is implemented on Linux.
1036 * The `btowc' function should work at least twice as fast due to
1037 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1039 * With approriate thread add-ons cancelable functions are now implemented
1040 in libc.so as well. No need to call the function in libpthread. This
1041 change allowed to finally disable the incorrect and expensive handling
1042 of weak definition in ld.so.
1044 * Yet more PLT entries in libc.so have been removed. We finally arrived
1045 at the bare minimum. Startup times improved appropriately.
1047 * Support for the new Linux/x86 system call interface was added. The
1048 AT_SYSINFO auxiliary vector entry is recognized and handled.
1052 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1055 * iconv (the program and the interface) now accepts empty names (excluding
1056 options like //TRANSLIT) to mean "use charset of current locale".
1058 * localedef can now transliterate characters in strings which are not in
1059 the provided charmap. The information from the input locale is used.
1061 * Prelinking support was added for ELF targets. This requires additional
1062 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1064 * Read-only stdio streams now use mmap to speed up operation by eliminating
1065 copying and buffer underflows. To use add 'm' to the mode string of
1066 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1068 * The malloc functions were completely rewritten by Wolfram Gloger based
1069 on Doug Lea's malloc-2.7.0.c.
1071 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1072 implementation of regex.
1074 * Bruno Haible upgraded the iconv and locale implementation to support
1077 * Contents of the LC_* and LANG environment variables in the CEN style are
1078 not recognized anymore. It never was used. Change by Ulrich Drepper.
1080 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1081 thread-local storage (TLS) ABI on some platforms.
1082 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1084 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1085 EUC-JISX0213, and TSCII.
1087 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1088 BSD-compatible interface for getting all network interface addresses.
1089 Implementation for IPv4 by Roland McGrath.
1091 * Loading of locale data is faster due to the introduction of a locale
1092 archive. Implemented by Roland McGrath and Ulrich Drepper.
1094 * Startup times are significantly reduced by not using exported functions
1095 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1098 * Steven Munroe contributed a port to PowerPC64/Linux.
1102 * The Hurd now uses the GNU libio implementation of stdio rather than the
1103 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1105 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1106 with the same behavior as the Linux system call of the same name.
1110 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1111 128-bit long double format.
1113 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1114 IBM1161, and IBM1162 charsets.
1116 * Andreas Jaeger contributed a port to x86-64/Linux.
1118 * Peter Bruin contributed a port to PowerPC/Hurd.
1120 * libc functions using I/O streams now can handle wide-oriented streams
1123 * optimizations in the dynamic linker. Binaries created by recent binutils
1124 versions start up quicker due to reduced time spent on relocations.
1126 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1130 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1131 asinh, atanh, j0 for the 128-bit long double format.
1133 * Bruno Haible updated all the code handling Unicode in some form to
1134 support Unicode 3.1.
1136 * Speed of regex for single-byte locales is back to previous levels.
1137 Patch by Isamu Hasegawa.
1139 * Alpha, SPARC, and IA-64 now also using floating stacks.
1141 * Startup time of internationalized applications greatly improved through
1142 iconv cache. Use iconvconfig to generate the cache file.
1143 Contributed by Ulrich Drepper.
1145 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1146 severe performance problems. Patch by David Mosberger.
1148 * The Hurd port got a lot more functionality like AIO, various stdio
1149 extensions, etc. Mainly done by Roland McGrath.
1151 * mtrace can now lookup symbols in shared libraries.
1155 * Intel's IA-64 math library is largely integrated. It provides fast and
1156 accurate implementatations for most basic and standard math functions
1157 in float, double, and long double format.
1159 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1160 and asin for the 96-bit long double format and asin, log, tan for the
1161 128-bit long double format.
1163 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1164 The basic double functions exist today. Contributed by Abraham Ziv
1165 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1166 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1168 * An asynchronous name lookup library was added. The interface is designed
1169 after POSIX AIO. The proposal was circulated beforehand to get comments.
1170 No negative ones came in. Implemented by Ulrich Drepper.
1172 * Port to S390/64bit contributed by Martin Schwidefsky
1173 <schwidefsky@de.ibm.com>.
1175 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1176 of functions for Linux/IA-64.
1178 * The RPC code is now thread safe. Threads can now use the same service
1179 of different services at the same time. Patch by Eric Norum
1180 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1182 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1183 family of functions for Linux/S390.
1185 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1186 of functions for Linux/x86.
1188 * Port to Linux/CRIS contributed by Axis Communications.
1192 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1193 we can now check for namespace violations and missing declarations. The
1194 result is that almost all headers are now Unix-compliant (as defined in
1195 the upcoming XPG6). The negative side is that some programs might need
1196 corrections, too, if they depend on the incorrect form of the headers in
1197 previous versions which defined too many symbols and included too many
1200 * regex now handles multibyte character sets correctly.
1201 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1203 * iconv (the program) does now conform to the upcoming XPG6 and handles
1204 charmaps. Instead of the charset names the path of charmaps can be
1205 provided and the conversion happens based on this data.
1206 Contributed by Ulrich Drepper.
1208 * The locale program now provides detailed information about the installed
1213 only lists the names of the supported locales
1217 provides details such as country, language, and codeset name.
1218 Contributed by Ulrich Drepper.
1222 * The gencat program now parses the input file according to the charset
1223 selected by the LC_CTYPE category. This is important for stateful
1224 character sets. To make generating catalogs easier there is a way
1225 to overwrite the charset selected by the locale: before the first
1226 message or $ quote line the catalog can contain a line like
1228 $ codeset=ISO-8859-2
1230 to select the charset (ISO-8859-2 in this case).
1232 Implemented by Shinya Hanataka and Ulrich Drepper.
1234 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1235 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1236 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1238 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1239 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1241 * The LANGUAGE environment variable is now ignored unless the locale is
1242 changed from the default "C" locale.
1244 * The usual bug fixes.
1248 * Greg McGary added runtime support for bounds checking using gcc's
1249 new -fbounded-pointers option. ix86 target is complete. PowerPC
1252 * Thorsten Kukuk added secure mode support to nscd.
1254 * The Berkeley db libraries have been removed.
1256 Related, the nss_db module is now in a separate package since it
1257 obviously requires a database library being available.
1259 * Wide character I/O streams implemented by Ulrich Drepper.
1261 * Functions from the extended socket API added by Ulrich Drepper.
1263 * Functions feenableexcept and fedisableexcept to control the
1264 behaviour of individual exceptions have been added by Andreas Jaeger.
1266 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1268 * The resolver code has been updated from bind 8.2.3-T5B which supports
1269 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1272 This change could in some situations effect backward compatibility. Since
1273 now `_res' is a thread-local instead of a global variable, modifying it
1274 in one thread does not have any effect in other threads.
1276 The resolver library was also extended to allow IPv6 as the transport
1277 protocol for the requests. This work was done by Stig Venaas.
1279 * Compatibility code for K&R C compilers has been removed from the
1280 header files. A ISO C compiler is needed to use the library
1281 (conforming to either C89 or C99 standard).
1283 * Complete rewrite of the localedef program to support multibyte character
1284 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1285 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1286 Implemented by Ulrich Drepper.
1288 Bruno Haible significantly improved the generation and use of the data
1289 structures for the wide character tables.
1291 * Plural handling in gettext implemented by Ulrich Drepper.
1293 * The utmp daemon has been removed.
1295 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1297 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1300 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1302 * POSIX barriers implemented by Kaz Kylheku.
1304 * POSIX spawn function family implemented by Ulrich Drepper.
1306 * POSIX spinlocks are now available.
1308 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1310 * the configure option --enable-kernel=X.Y.Z allows to strip out
1311 compatibility for kernel versions before X.Y.Z. This is currently only
1312 implemented for Linux.
1314 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1315 field sin6_scope_id. This means that all programs using IPv6 should be
1316 recompiled. Don't expect binary compatibility with previous glibc
1319 * various conversion modules for IBM character sets contributed by
1322 * IA-64 port by Jes Sorensen and HJ Lu.
1336 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1338 * New xdr functions are added; some rpc functions are now 64bit clean.
1340 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1342 * Fixed known incompatibilities with glibc 2.0.
1344 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1346 * Optimized a number of functions (especially the ELF dynamic loader).
1348 * Update timezone data files.
1350 * lots of charmaps corrections
1352 * some new locale definitions and charmaps
1357 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1358 conform to POSIX member type requirements. Symbol versions have been
1359 adjusted as needed within the library, and for direct use by applications,
1360 but there is potential for problems if third-party libraries use
1361 struct timeval as part of their interface. This does not present
1362 a problem for X and other "essential" system libraries.
1364 * An additional locale model to support C++ Standard Library locale
1365 model and probably more was implemented by Ulrich Drepper.
1367 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1370 * Miles Bader provided the `argp' function family to support hierachical
1371 command line argument parsing, layered on top of getopt.
1373 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1375 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1378 * scanf recognizes the %a and %A format for scanning floating point numbers.
1380 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1381 information and interfaces for the available integer types.
1383 * about 130 new math functions were added to implement the ISO C9x math
1386 * the new header <complex.h> contains definitions of the complex math
1387 functions from ISO C 9X.
1389 * the new header <tgmath.h> defines generic macros to use complex or
1390 real valued functions.
1392 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1394 * Andreas Jaeger provided a test suite for the math library.
1396 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1398 * Ulrich Drepper added character set conversion functions (iconv).
1400 * Optimized string functions have been added.
1402 * The localedata addon is now part of glibc.
1404 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1406 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1407 daemon for NSS (nscd).
1409 Missing a better place here are some numbers on improvements. Under
1410 Linux 2.1.125 un-tar-ing the kernel sources takes
1414 using local files 12.19s 6.88s 22.91s
1416 using NIS 13.92s 8.91s 26.34s
1418 using NIS & nscd 10.37s 7.34s 25.30s
1420 using NIS+ 27.57s 30.37s 640.46s
1422 using NIS+ & nscd 10.25s 7.83s 26.51s
1424 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1426 Keep in mind that non-namelookup related operations dominate above times.
1427 It was just a common complain that using NIS+ unpacking the kernel is
1430 [1] The old nscd implementation is not available anymore since it was
1431 distributed with glibc up to version 2.0.98 and thus is now replaced.
1433 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1435 * Mark Kettenis provided a Hesiod NSS module.
1437 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1438 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1440 * rcmd can now handle netgroups (Dick Streefland).
1442 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1445 * Support for the IPv6 protocol has been added to the socket API, as per the
1446 latest draft standards.
1448 * Support for Linux 2.2 has been added.
1450 * Interface changes relative to the latest 2.0.x release:
1451 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1452 addseverity NEW: Unix98
1453 alphasort64 NEW: LFS
1454 argp_err_exit_status NEW: argp, GNU ext
1455 argp_error NEW: argp, GNU ext
1456 argp_failure NEW: argp, GNU ext
1457 argp_help NEW: argp, GNU ext
1458 argp_parse NEW: argp, GNU ext
1459 argp_program_bug_address NEW: argp, GNU ext
1460 argp_program_version NEW: argp, GNU ext
1461 argp_program_version_hook NEW: argp, GNU ext
1462 argp_state_help NEW: argp, GNU ext
1463 argp_usage NEW: argp, GNU ext
1464 authdes_create NEW: Secure RPC
1465 authdes_getucred NEW: Secure RPC
1466 authdes_pk_create NEW: Secure RPC
1467 backtrace NEW: GNU ext.
1468 backtrace_symbols NEW: GNU ext.
1469 backtrace_symbols_fd NEW: GNU ext.
1471 cacosf NEW: ISO C 9x
1472 cacosh NEW: ISO C 9x
1473 cacoshf NEW: ISO C 9x
1474 cacoshl NEW: ISO C 9x
1475 cacosl NEW: ISO C 9x
1482 casinf NEW: ISO C 9x
1483 casinh NEW: ISO C 9x
1484 casinhf NEW: ISO C 9x
1485 casinhl NEW: ISO C 9x
1486 casinl NEW: ISO C 9x
1488 catanf NEW: ISO C 9x
1489 catanh NEW: ISO C 9x
1490 catanhf NEW: ISO C 9x
1491 catanhl NEW: ISO C 9x
1492 catanl NEW: ISO C 9x
1493 cbc_crypt NEW: Secure RPC
1497 ccoshf NEW: ISO C 9x
1498 ccoshl NEW: ISO C 9x
1504 cimagf NEW: ISO C 9x
1505 cimagl NEW: ISO C 9x
1506 clearerr_locked REMOVED
1507 clntunix_create NEW: sunrpc ext
1509 clog10 NEW: ISO C 9x
1510 clog10f NEW: ISO C 9x
1511 clog10l NEW: ISO C 9x
1521 cprojf NEW: ISO C 9x
1522 cprojl NEW: ISO C 9x
1524 crealf NEW: ISO C 9x
1525 creall NEW: ISO C 9x
1530 csinhf NEW: ISO C 9x
1531 csinhl NEW: ISO C 9x
1534 csqrtf NEW: ISO C 9x
1535 csqrtl NEW: ISO C 9x
1539 ctanhf NEW: ISO C 9x
1540 ctanhl NEW: ISO C 9x
1542 des_setparity NEW: Secure RPC
1543 ecb_crypt NEW: Secure RPC
1544 endutxent NEW: Unix98
1546 exp10f NEW: ISO C 9x
1547 exp10l NEW: ISO C 9x
1551 fattach NEW: STREAMS
1552 fdetach NEW: STREAMS
1556 feclearexcept NEW: ISO C 9x
1557 fegetenv NEW: ISO C 9x
1558 fegetexceptflag NEW: ISO C 9x
1559 fegetround NEW: ISO C 9x
1560 feholdexcept NEW: ISO C 9x
1562 feraiseexcept NEW: ISO C 9x
1563 ferror_locked REMOVED
1564 fesetenv NEW: ISO C 9x
1565 fesetexceptflag NEW: ISO C 9x
1566 fesetround NEW: ISO C 9x
1567 fetestexcept NEW: ISO C 9x
1568 feupdateenv NEW: ISO C 9x
1569 fflush_locked REMOVED
1573 fgets_unlocked NEW: GNU ext.
1574 fileno_locked REMOVED
1586 fputc_locked REMOVED
1587 fputs_unlocked NEW: GNU ext.
1588 fread_unlocked NEW: GNU ext.
1593 fstatvfs NEW: Unix98
1597 ftruncate64 NEW: LFS
1599 fwrite_unlocked NEW: GNU ext.
1600 gai_strerror NEW: IPv6
1604 getchar_locked REMOVED
1606 getdate_err NEW: Unix98
1607 getdate_r NEW: GNU ext.
1609 getnameinfo NEW: IPv6
1610 getnetname NEW: Secure RPC
1611 getpmsg NEW: STREAMS
1612 getpt NEW: Unix98 PTY
1613 getrlimit64 NEW: LFS
1614 getutxent NEW: Unix98
1615 getutxid NEW: Unix98
1616 getutxline NEW: Unix98
1617 glob64 NEW: GNU ext.
1618 globfree64 NEW: GNU ext.
1619 gnu_get_libc_release NEW: GNU ext.
1620 gnu_get_libc_version NEW: GNU ext.
1621 grantpt NEW: Unix98 PTY
1622 host2netname NEW: Secure RPC
1624 iconv_close NEW: iconv
1625 iconv_open NEW: iconv
1626 if_freenameindex NEW: IPv6
1627 if_indextoname NEW: IPv6
1628 if_nameindex NEW: IPv6
1629 if_nametoindex NEW: IPv6
1630 in6addr_any NEW: IPv6
1631 in6addr_loopback NEW: IPv6
1632 inet6_isipv4mapped NEW: IPv6
1633 isastream NEW: STREAMS
1634 iswblank NEW: GNU ext.
1635 key_decryptsession NEW: Secure RPC
1636 key_decryptsession_pk NEW: Secure RPC
1637 key_encryptsession NEW: Secure RPC
1638 key_encryptsession_pk NEW: Secure RPC
1639 key_gendes NEW: Secure RPC
1640 key_get_conv NEW: Secure RPC
1641 key_secretkey_is_set NEW: Secure RPC
1642 key_setnet NEW: Secure RPC
1643 key_setsecret NEW: Secure RPC
1644 llrint NEW: ISO C 9x
1645 llrintf NEW: ISO C 9x
1646 llrintl NEW: ISO C 9x
1647 llround NEW: ISO C 9x
1648 llroundf NEW: ISO C 9x
1649 llroundl NEW: ISO C 9x
1654 lrintf NEW: ISO C 9x
1655 lrintl NEW: ISO C 9x
1656 lround NEW: ISO C 9x
1657 lroundf NEW: ISO C 9x
1658 lroundl NEW: ISO C 9x
1660 makecontext NEW: Unix98
1661 mempcpy NEW: GNU ext.
1664 modify_ldt NEW: kernel
1668 nearbyint NEW: ISO C 9x
1669 nearbyintf NEW: ISO C 9x
1670 nearbyintl NEW: ISO C 9x
1671 netname2host NEW: Secure RPC
1672 netname2user NEW: Secure RPC
1673 nexttoward NEW: ISO C 9x
1674 nexttowardf NEW: ISO C 9x
1675 nexttowardl NEW: ISO C 9x
1679 passwd2des NEW: Secure RPC
1681 pow10f NEW: GNU ext.
1682 pow10l NEW: GNU ext.
1685 printf_size NEW: GNU ext.
1686 printf_size_info NEW: GNU ext.
1687 profil_counter REMOVED
1688 pthread_mutexattr_getkind_np REPLACED
1689 pthread_mutexattr_setkind_np REPLACED
1690 ptsname NEW: Unix98 PTY
1691 ptsname_r NEW: Unix98 PTY
1693 putchar_locked REMOVED
1694 putgrent NEW: GNU ext.
1696 putpmsg NEW: STREAMS
1697 pututxline NEW: Unix98
1701 readdir64_r NEW: LFS
1702 remquo NEW: ISO C 9x
1703 remquof NEW: ISO C 9x
1704 remquol NEW: ISO C 9x
1706 roundf NEW: ISO C 9x
1707 roundl NEW: ISO C 9x
1709 scalbln NEW: ISO C 9x
1710 scalblnf NEW: ISO C 9x
1711 scalblnl NEW: ISO C 9x
1713 sendfile NEW: kernel
1714 setcontext NEW: Unix98
1715 setrlimit64 NEW: LFS
1716 setutxent NEW: Unix98
1718 sigignore NEW: Unix98
1719 sigqueue NEW: POSIX.1b
1720 sigrelse NEW: Unix98
1721 sigset NEW: POSIX.1b
1722 sigtimedwait NEW: POSIX.1b
1723 sigwaitinfo NEW: POSIX.1b
1724 sincos NEW: GNU ext.
1725 sincosf NEW: GNU ext.
1726 sincosl NEW: GNU ext.
1730 strcasestr NEW: GNU ext.
1731 strtoimax NEW: ISO C 9x
1732 strtoumax NEW: ISO C 9x
1733 strverscmp NEW: GNU ext.
1734 svcauthdes_stats NEW: Secure RPC
1735 svcunix_create NEW: sunrpc etx
1736 svcunixfd_create NEW: sunrpc ext
1737 swapcontext NEW: Unix98
1738 tcgetsid NEW: Unix98 PTY
1739 tdestroy NEW: GNU ext.
1740 tgamma NEW: ISO C 9x
1741 tgammaf NEW: ISO C 9x
1742 tgammal NEW: ISO C 9x
1746 truncf NEW: ISO C 9x
1747 truncl NEW: ISO C 9x
1749 unlockpt NEW: Unix98 PTY
1750 updwtmpx NEW: Unix98
1751 user2netname NEW: Secure RPC
1752 utmpxname NEW: Unix98
1753 versionsort NEW: GNU ext.
1754 versionsort64 NEW: GNU ext.
1756 wcscasecmp NEW: GNU ext.
1757 wcsncasecmp NEW: GNU ext.
1758 wcsnlen NEW: GNU ext.
1759 wcstoimax NEW: ISO C 9x
1760 wcstoll NEW: ISO C 9x
1761 wcstoull NEW: ISO C 9x
1762 wcstoumax NEW: ISO C 9x
1764 wordexp NEW: POSIX.2
1765 wordfree NEW: POSIX.2
1766 write_profiling REMOVED
1767 xdecrypt NEW: Secure RPC
1768 xdr_authdes_cred NEW: Secure RPC
1769 xdr_authdes_verf NEW: Secure RPC
1770 xdr_cryptkeyarg NEW: Secure RPC
1771 xdr_cryptkeyarg2 NEW: Secure RPC
1772 xdr_cryptkeyres NEW: Secure RPC
1773 xdr_getcredres NEW: Secure RPC
1774 xdr_key_netstarg NEW: Secure RPC
1775 xdr_key_netstres NEW: Secure RPC
1776 xdr_keybuf NEW: Secure RPC
1777 xdr_keystatus NEW: Secure RPC
1778 xdr_netnamestr NEW: Secure RPC
1779 xdr_sizeof NEW: Secure RPC
1780 xdr_unixcred NEW: sunrpc ext
1781 xencrypt NEW: Secure RPC
1782 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1793 * inet_ntoa is thread-safe
1795 * updwtmp is moved from libutil to libc
1797 * rewrite of cbrt function
1799 * update of timezone data
1813 * add atoll function
1815 * fix complex problems in Berkeley DB code
1817 * fix math functions
1821 * fixed lots of header problems (especially Linux/GNU specific)
1823 * dynamic loader preserves all registers
1825 * Roland McGrath provided support for handling of auxiliary objects in
1826 the ELF dynamic loader.
1828 * support for parallel builds is improved
1832 * GNU extensions are no longer declared by default. To enable them you
1833 must define the macro `_GNU_SOURCE' in your program or compile with
1836 * The library has changed from using GNU ld symbol aliases to using weak
1837 symbols where available. The ELF object file format supports weak
1838 symbols; GNU ld also supports weak symbols in the a.out format. (There
1839 is also now support for other GNU ld extensions in ELF. Use the
1840 `--with-elf' option to configure to indicate you have ELF, and
1841 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1842 of many files which contained only symbol aliases, reducing the size of
1843 the source and the compiled library; many other files were renamed to
1844 less cryptic names previously occupied by the symbol alias files.
1845 There is a new header file <elf.h> for programs which operate on
1846 files in the ELF format.
1848 * Converted to Autoconf version 2, so `configure' has more options.
1849 Run `configure --help' to see the details.
1851 * The library can now be configured to build profiling, highly-optimized
1852 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1853 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1854 `configure' enable building these extra libraries. The shared library is
1855 built by default when using both ELF and GNU ld. When shared libraries
1856 are enabled, the new library `-ldl' is available for arbitrary run-time
1857 loading of shared objects; its interface is defined in <dlfcn.h>. The
1858 new header file <link.h> gives access to the internals of the run-time
1859 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1860 application of same name on other systems and it provides information
1861 about dynamically linked binaries.
1863 * The C library now provides the run-time support code for profiling
1864 executables compiled with `-pg'. Programs can control the profiling code
1865 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1866 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1867 the support for this file format was contributed by David Mosberger-Tang.
1869 * The math code has been replaced with a math library based on fdlibm from
1870 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1871 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1872 functions. The math functions now reside in a separate library, so
1873 programs using them will need to use `-lm' their linking commands.
1875 * John C. Bowman contributed optimized ix87 assembler inline functions.
1877 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1878 mechanism similar to that found in Solaris 2. This is now used for the
1879 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1880 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1881 file controls what services are used for each individual database. This
1882 works by loading shared libraries with names specified in `nsswitch.conf',
1883 so service modules can be changed or added at any time without even
1884 relinking any program. Currently there are the file, db, and NIS based
1885 NSS services available.
1887 * The new functions `strtoq' and `strtouq' parse integer values from
1888 strings, like `strtol' and `strtoul', but they return `long long int' and
1889 `unsigned long long int' values, respectively (64-bit quantities).
1891 * The new functions `strtof' and `strtold' parse floating-point values from
1892 strings, like `strtod', but they return `float' and `long double' values,
1893 respectively (on some machines `double' and `long double' are the same).
1895 * Ulrich Drepper has contributed new implementations of the floating-point
1896 printing and reading code used in the `printf' family of functions and
1897 `strtod', `strtof', and `strtold'. These new functions are perfectly
1898 accurate, and much faster than the old ones.
1900 * The implementation of the POSIX locale model was completely rewritten by
1901 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1902 to compile the POSIX locale definition.
1904 * The former dummy implementations of the strcoll and strxfrm function are
1905 now replaced by fully functional code contributed by Ulrich Drepper. The
1906 collation information comes from the POSIX locale definitions.
1908 * The new header <langinfo.h> defines an interface for accessing
1909 various locale-dependent data (using the locale chosen with `setlocale').
1911 * Ulrich Drepper has contributed a new suite of functions for operation on
1912 wide-character and multibyte-character strings, in <wchar.h>;
1913 and classification and case conversion of wide characters, in <wctype.h>.
1914 These new functions are conforming to the ISO C, Amendement 1 specification.
1916 * There is now a second implementation of the standard I/O library available.
1917 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1918 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1920 * You can now use positional parameter specifications in format strings
1921 for the `printf' and `scanf' families of functions. For example,
1922 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1923 ``Number 6, Mr Jones''. This is mainly useful when providing different
1924 format strings for different languages, whose grammars may dictate
1925 different orderings of the values being printed. To support this
1926 feature, the interface for `register_printf_handler' has changed; see
1927 the header file <printf.h> for details.
1929 * The `printf' and `scanf' families of functions now understand a new
1930 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1931 to group numbers as indicated by the locale; for `scanf' and friends, this
1932 says to accept as valid only a number with all the proper grouping
1933 separators in the right places. In the default "C" locale, numbers are
1934 not grouped; but locales for specific countries will define the usual
1935 conventions (i.e. separate thousands with `,' in the US locale).
1937 * The pgrp functions have been regularized, slightly incompatibly but much
1938 less confusingly. The core functions are now `getpgid' and `setpgid',
1939 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1940 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1941 provided for compatibility. There is no longer an incompatible `getpgrp'
1942 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1944 * The new header file <fts.h> and suite of functions simplify programs that
1945 operate on directory trees. This code comes from 4.4 BSD.
1947 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1948 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1949 NSS scheme used in glibc.
1951 * There is a new malloc debugging hook `__memalign_hook'.
1953 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1954 `unsigned int' in <sys/types.h>. These are for compatibility only and
1955 their use is discouraged.
1957 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1958 done differently, so that it works even without GNU ld.
1960 * New function `euidaccess' checks allowed access to a file like `access',
1961 but using the effective IDs instead of the real IDs.
1963 * The time zone data files have been updated for the latest and greatest
1964 local time conventions of the countries of the world.
1966 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1969 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1970 for formatting floating-point numbers. They are provided only for
1971 compatibility; new programs should use `sprintf' instead. There are
1972 also equivalent function for the `long double' floating-point type and
1973 all functions also exist in a reentrant form.
1975 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1976 functions for maintaining the login-record files (primarily of use to
1977 system programs such as `login'), and convenient functions for
1978 allocating and initializing a pseudo-terminal (pty) device.
1980 * Ulrich Drepper has contributed new support for System V style
1981 shared memory and IPC on systems that support it.
1983 * Ulrich Drepper has contributed several miscellaneous new functions found
1984 in System V: The `hsearch' family of functions provide an effective
1985 implementation of hash tables; `a64l' and `l64a' provide a very simple
1986 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1989 * Ulrich Drepper has contributed new reentrant counterparts for the
1990 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1992 * Ulrich Drepper has contributed new, highly-optimized versions of several
1993 string functions for the i486/Pentium family of processors.
1995 * Ulrich Drepper has updated the Linux-specific code, based largely
1996 on work done in Hongjiu Lu's version of GNU libc for Linux.
1997 The GNU library now supports Linux versions 2.0.10 and later,
1998 using the ELF object file format (i[3456]86-*-linux).
2000 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2002 * David Mosberger-Tang and Richard Henderson have ported the C library
2003 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2004 dynamic linking support for ELF/Alpha.
2006 * Richard Henderson contributed several Alpha optimized assembler function
2007 for arithmetic and string handling.
2009 * Ulrich Drepper has contributed a new set of message catalog functions to
2010 support multiple languages using the <libintl.h> interface, for use with
2011 his new package GNU gettext. Translation volunteers have contributed
2012 catalogs of the library's messages in Spanish, German, and Korean.
2014 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2015 program and the `catgets' function for reading the catalog files it
2016 creates. (The <libintl.h> interface is preferred; we include the
2017 <nl_types.h> interface using `catgets' only for source compatibility with
2018 programs already written to use it.)
2020 * New header file <values.h> gives SVID-compatible names for <limits.h>
2023 * Various new macros, declarations, and small header files for compatibility
2026 * New function `group_member' is a convenient way to check if a process has
2027 a given effective group ID.
2029 * When using GCC 2.7 and later, the socket functions are now declared in a
2030 special way so that passing an argument of type `struct sockaddr_in *',
2031 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2032 `struct sockaddr *' type, does not generate a type-clash warning.
2034 * New function `error' declared in header file <error.h> is a convenient
2035 function for printing error messages and optionally exiting; this is the
2036 canonical function used in GNU programs. The new functions `err', `warn',
2037 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2038 doing the same thing.
2040 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2041 POSIX.2 `glob' function to do ~ and {...} expansion.
2043 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2044 `clearenv' which is used in POSIX.9 is also available.
2046 * New function `getsid' returns session ID number on systems that support it.
2048 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2049 files <db.h> and <mpool.h> provide a rich set of functions for several
2050 types of simple databases stored in memory and in files, and <ndbm.h> is
2051 an old `ndbm'-compatible interface using the `db' functions. Link with
2052 `-ldb' to get these functions.
2054 * New macro `strdupa' copies a string like `strdup', but uses local stack
2055 space from `alloca' instead of dynamic heap space from `malloc'.
2057 * New function `strnlen' is like `strlen' but searches only a given maximum
2058 number of characters for the null terminator. `stpncpy', `strndup' and
2059 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2062 * New function `statfs' in header <sys/statfs.h>.
2064 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2065 provide convenient functions for operating on blocks of null-terminated
2068 * A new suite of functions in <utmp.h> handle all the details of reading
2069 and writing the utmp file.
2071 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2074 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2075 completely POSIX compliant and also implemented the extended functionality
2076 to handle alternate digit representation and alternate era date formats.
2078 * Ulrich Drepper provided an implementation of the `strptime' function
2079 defined in XPG4.2 which transforms a string into a `struct tm' value.
2081 * Paul Eggert provided the tzselect shell script as part of the timezone
2082 code. The shell script makes it easy to select the correct timezone
2085 * The implementation of the malloc family of functions is completely replaced
2086 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2087 The implementation uses the mmap function (if available) and it is
2088 optimized for the use in multi threaded programs.
2090 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2091 functions. This new functionality is usable by specifying a special
2092 salt string and it is compatible with implementation on *BSD systems.
2094 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2095 `getsubopt' to handle second level command line options, `bsd_signal'
2096 to access BSD style `signal' functionality, the obsolete `regexp' style
2099 * the `lchown' function is available on system which support this
2102 * The implementation of the shadow password handling function was contributed
2105 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2107 * POSIX.1g support was added. The <sys/select.h> header is available,
2108 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2109 implementation of `getaddrinfo'.
2113 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2115 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2116 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2118 * The new function `daemon' from 4.4 BSD is useful for server programs that
2119 want to put themselves in the background.
2121 * Joel Sherrill has contributed support for several standalone boards that
2122 run without an operating system.
2124 * `printf', `scanf' and friends now accept a `q' type modifier for long
2125 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2127 * All of the code taken from BSD (notably most of the math and networking
2128 routines) has been updated from the BSD 4.4-Lite release.
2130 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2132 * The new functions `getdomainname' and `setdomainname' fetch or change the
2133 YP/NIS domain name. These are system calls which exist on systems which
2136 * The time zone data files have been updated for the latest international
2139 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2140 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2144 * The C library now includes support for Sun RPC, from Sun's free
2145 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2146 are included. (There is still no support for YP.)
2148 * Tom Quinn has contributed a port of the C library to SGI machines running
2149 Irix 4 (mips-sgi-irix4).
2151 * The new `lockf' function is a simplified interface to the locking
2152 facilities of `fcntl', included for compatibility.
2154 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2156 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2158 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2161 * The error message printed by `assert' for a failed assertion now includes
2162 the name of the program (if using GNU ld) and the name of the calling
2163 function (with versions of GCC that support this).
2165 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2167 * The library now includes the <sys/mman.h> header file and memory
2168 management functions `mmap', `munmap', `mprotect', `msync', and
2169 `madvise', on systems that support those facilities.
2171 * The interface for `mcheck' has changed slightly: the function called to
2172 abort the program when an allocation inconsistency is detected now takes
2173 an argument that indicates the type of failure. The new function
2174 `mprobe' lets you request a consistency check for a particular block at
2175 any time (checks are normally done only when you call `free' or `realloc'
2178 * It is now possible to easily cross-compile the C library, building on one
2179 system a library to run on another machine and/or operating system. All
2180 you need to do is set the variable `HOST_CC' in `configparms' to the
2181 native compiler for programs to run on the machine you are building on (a
2182 few generator programs are used on Unix systems); set `CC' to the
2185 * The new function `fexecve' (only implemented on the GNU system) executes
2186 a program file given a file descriptor already open on the file.
2190 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2191 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2193 * You can set the variable `libprefix' in `configparms' to specify a prefix
2194 to be prepended to installed library files; this makes it easy to install
2195 the GNU C library to be linked as `-lgnuc' or whatever.
2197 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2198 copies a limited number of characters from a string, and returns the
2199 address of the last character written.
2201 * You no longer need to check for whether the installed `stddef.h' is
2202 compatible with the GNU C library. configure now checks for you.
2204 * You can now define a per-stream `fileno' function to convert the
2205 stream's cookie into an integral file descriptor.
2207 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2208 allocates zero bytes of storage, and returns a unique pointer which
2209 you can pass to `realloc' or `free'. The behavior is undefined if
2210 you dereference this pointer.
2212 * The C library now runs on Sony NEWS m68k machines running either
2213 NewsOS 3 or NewsOS 4.
2215 * The new `syscall' function is a system-dependent primitive function
2216 for invoking system calls. It has the canonical behavior on Unix
2217 systems, including unreliable return values for some calls (such as
2218 `pipe', `fork' and `getppid').
2220 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2221 to `EAGAIN', which is the preferred name. On systems whose kernels
2222 use two distinct codes, the C library now translates EWOULDBLOCK to
2223 EAGAIN in every system call function.
2227 * The GNU C Library Reference Manual is now distributed with the library.
2228 `make dvi' will produce a DVI file of the printed manual.
2229 `make info' will produce Info files that you can read on line using C-h i
2230 in Emacs or the `info' program.
2231 Please send comments on the manual to bug-glibc-manual@gnu.org.
2233 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2235 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2237 * Jason Merrill has contributed a port to the Sequent Symmetry running
2238 Dynix version 3 (i386-sequent-dynix).
2240 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2241 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2243 * New function `memory_warnings' lets you arrange to get warnings when
2244 malloc is running out of memory to allocate, like Emacs gives you.
2246 * The C library now contains the relocating allocator used in Emacs 19 for
2247 its editing buffers. This allocator (ralloc) minimizes allocation
2248 overhead and fragmentation by moving allocated regions around whenever it
2249 needs to. You always refer to a ralloc'd region with a "handle" (a
2250 pointer to a pointer--an object of type `void **').
2252 * There is a new `printf' format: `%m' gives you the string corresponding
2253 to the error code in `errno'.
2255 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2256 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2257 pass, the `a' modifier says to fill in a `char **' you pass with a
2260 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2261 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2262 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2264 * `mkstemp' is a traditional Unix function to atomically create and open a
2265 uniquely-named temporary file.
2269 * The standard location for the file that says what the local timezone is
2270 has changed again. It is now `/usr/local/etc/localtime' (or more
2271 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2273 * The distribution no longer contains any files with names longer than 14
2276 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2277 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2279 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2283 * The configuration process has changed quite a bit. The `configure'
2284 script is now used just like the configuration scripts for other GNU
2285 packages. The `sysdeps' directory hierarchy is much rearranged.
2286 The file `INSTALL' explains the new scheme in detail.
2288 * The header files no longer need to be processed into ANSI C and
2289 traditional C versions. There is just one set of files to install, and
2290 it will work with ANSI or old C compilers (including `gcc -traditional').
2292 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2293 MIPS DECStation running Ultrix 4.
2295 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2296 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2297 made itself into a shared library.
2299 * Yet further improved support for the i386, running 4.3 BSD-like systems
2300 (such as Mach 3 with the Unix single-server), or System V.
2302 * New function `strncasecmp' to do case-insensitive string comparison
2303 with limited length.
2305 * New function `strsep' is a reentrant alternative to `strtok'.
2307 * New functions `scandir' and `alphasort' for searching directories.
2309 * New function `setenv' is a better interface to `putenv'.
2311 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2312 function for traversing a directory tree.
2314 * The GNU obstack package is now also part of the C library.
2315 The new function `open_obstack_stream' creates a stdio stream that
2316 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2317 formatted output directly to an obstack.
2319 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2320 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2322 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2324 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2325 things to your strings.
2327 * There are some new test programs: test-fseek, testmb, and testrand.
2329 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2330 These ports are not finished, but are a good starting place for really
2331 supporting those systems.
2333 * `/etc/localtime' is now the standard location for the file that says what
2334 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2335 This follows the general principle that `/etc' is the place for all local
2336 configuration files.
2338 * The C library header files now use `extern "C"' when used by the C++
2339 compiler, so the C library should now work with C++ code.
2341 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2342 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2345 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2346 function which uses the `merge sort' algorithm, and is said to be
2347 significantly faster than the old GNU `qsort' function. Merge sort is
2348 now the standard `qsort' function. The new algorithm can require a lot
2349 of temporary storage; so, the old sorting function is called when the
2350 required storage is not available.
2352 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2353 provides the Unix `crypt' function, plus some other entry points.
2355 * The code and header files taken from 4.4 BSD have been updated with the
2356 latest files released from Berkeley.
2358 ----------------------------------------------------------------------
2359 Copyright information:
2361 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2363 Permission is granted to anyone to make or distribute verbatim copies
2364 of this document as received, in any medium, provided that the
2365 copyright notice and this permission notice are preserved,
2366 thus giving the recipient permission to redistribute in turn.
2368 Permission is granted to distribute modified versions
2369 of this document, or of portions of it,
2370 under the above conditions, provided also that they
2371 carry prominent notices stating who last changed them.
2374 version-control: never
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