1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2014 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 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
13 15804, 15894, 15946, 16002, 16064, 16095, 16198, 16284, 16348, 16349,
14 16357, 16362, 16447, 16516, 16532, 16545, 16564, 16574, 16599, 16600,
15 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
16 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16683, 16689, 16695,
17 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
18 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
19 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16849, 16854, 16876,
20 16877, 16878, 16882, 16885, 16888, 16890, 16912, 16915, 16916, 16917,
21 16922, 16927, 16928, 16932, 16943, 16958, 16966, 16967, 16965, 16977,
22 16978, 16984, 16990, 17009.
24 * The minimum Linux kernel version that this version of the GNU C Library
25 can be used with is 2.6.32.
27 * Running the testsuite no longer terminates as soon as a test fails.
28 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
29 with PASS or FAIL lines for individual tests. A summary of the results is
30 printed, including a list of failing lists, and "make check" exits with
31 error status if there were any unexpected failures. "make check
32 stop-on-test-failure=y" may be used to keep the old behavior.
34 * The am33 port, which had not worked for several years, has been removed
37 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
38 supported; they now act the same as _DEFAULT_SOURCE (but generate a
39 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
40 conflicted with POSIX (support for which was removed in 2.19), the
41 interfaces those macros enabled remain available when compiling with
42 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
45 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
47 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
48 This may improve lock scaling of existing programs on TX capable systems.
49 The lock elision code is only built with --enable-lock-elision=yes and
50 then requires a GCC version supporting the TX builtins. With lock elision
51 default mutexes are elided via __builtin_tbegin, if the cpu supports
52 transactions. By default lock elision is not enabled and the elision code
57 * The following bugs are resolved with this release:
59 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
60 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
61 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
62 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
63 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
64 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
65 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
66 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
67 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
68 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
69 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
70 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
71 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
72 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
73 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
74 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
75 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
76 16431, 16453, 16474, 16506, 16510, 16529
78 * Slovenian translations for glibc messages have been contributed by the
79 Translation Project's Slovenian team of translators.
81 * The public headers no longer use __unused nor __block. This change is to
82 support compiling programs that are derived from BSD sources and use
83 __unused internally, and to support compiling with Clang's -fblock
84 extension which uses __block.
86 * CVE-2012-4412 The strcoll implementation caches indices and rules for
87 large collation sequences to optimize multiple passes. This cache
88 computation may overflow for large collation sequences and may cause a
89 stack or buffer overflow. This is now fixed to use a slower algorithm
90 which does not use a cache if there is an integer overflow.
92 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
93 rules for large collation sequences to optimize multiple passes and falls
94 back to alloca if malloc fails, resulting in a possible stack overflow.
95 The implementation now falls back to an uncached collation sequence lookup
98 * CVE-2013-4788 The pointer guard used for pointer mangling was not
99 initialized for static applications resulting in the security feature
100 being disabled. The pointer guard is now correctly initialized to a
101 random value for static applications. Existing static applications need
102 to be recompiled to take advantage of the fix (bug 15754).
104 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
105 to the d_name member of struct dirent, or omit the terminating NUL
106 character. (Bugzilla #14699).
108 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
109 aligned_alloc functions could allocate too few bytes or corrupt the
110 heap when passed very large allocation size values (Bugzilla #15855,
113 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
114 for AF_INET6 has been fixed (Bugzilla #16072).
116 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
117 pap_CW, quz_PE, the_NP.
119 * Substantially revised locales: gd_GB, ht_HT
121 * The LC_ADDRESS field was updated to support country_car for almost all
124 * ISO 1427 definitions were updated.
126 * ISO 3166 definitions were updated.
128 * The localedef utility now supports --big-endian and --little-endian
129 command-line options to generate locales for a different system from that
130 for which the C library was built.
132 * Binary locale files now only depend on the endianness of the system for
133 which they are generated and not on other properties of that system. As a
134 consequence, binary files generated with new localedef may be incompatible
135 with old versions of the GNU C Library, and binary files generated with
136 old localedef may be incompatible with this version of the GNU C Library,
137 in the following circumstances:
139 + Locale files may be incompatible on m68k systems.
141 + Locale archive files (but not separate files for individual locales) may
142 be incompatible on systems where plain "char" is signed.
144 * The configure option --disable-versioning has been removed. Builds with
145 --disable-versioning had not worked for several years.
147 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
148 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
150 * SystemTap probes for malloc have been introduced.
152 * SystemTap probes for slow multiple precision fallback paths of
153 transcendental functions have been introduced.
155 * Support for powerpc64le has been added.
157 * The soft-float powerpc port now supports e500 processors.
159 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
161 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
162 set of header declarations that are enabled by default, even when other
163 feature test macros or compiler options such as -std=c99 would otherwise
164 disable some of those declarations.
166 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
167 conflict with POSIX. The libbsd-compat library (which was a dummy library
168 that did nothing) has also been removed.
170 * Preliminary documentation about Multi-Thread, Async-Signal and
171 Async-Cancel Safety has been added.
173 * Change of ABI data structures for s390 and s390x:
174 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
175 allow for future hardware extensions. All library functions that accept or
176 return these structures were versioned in order to provide backwards
177 compatibility with existing code. However, not all cases can be handled
178 with interface versioning. If an application embeds either structure into
179 another structure and that structure is passed to another compilation unit
180 which expects the newer larger-sized object then any access to the new
181 fields will result in undefined behaviour. Similarly any access to fields
182 that were moved by the enlarging of the structures will cause undefined
183 behaviour. To fix the undefined behaviour all objects that are part of the
184 final in-memory image must agree on the size of structures, and this may
185 require recompilation.
189 * The following bugs are resolved with this release:
191 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
192 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
193 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
194 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
195 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
196 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
197 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
198 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
199 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
200 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
201 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
202 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
203 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
206 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
207 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
208 Distributions can re-enable building and using pt_chown via the new configure
209 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
210 considerable security risks and should only be used if the distribution
211 understands and accepts the risks.
213 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
216 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
217 fixed (Bugzilla #15330).
219 * Add support for calling C++11 thread_local object destructors on thread
220 and program exit. This needs compiler support for offloading C++11
221 destructor calls to glibc.
223 * Improved worst case performance of libm functions with double inputs and
226 * Support for priority inherited mutexes in pthread condition variables on
227 non-x86 architectures.
229 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
231 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
233 * Optimized string functions for ARM. Implemented by Will Newton and
236 * Optimized libm functions for SPARC. Implemented by David S. Miller.
238 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
241 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
242 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
244 * Added a benchmark framework to track performance of functions in glibc.
246 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
247 It is based on draft TS 18661 and currently enabled as a GNU extension.
249 * On Linux, the clock function now uses the clock_gettime system call
250 for improved precision, rather than old times system call.
252 * Added support for version-3 tz format files. This is needed when using
253 the tz database release 2013e or later, and affects a few unusual cases --
254 currently only TZ='America/Godthab' for time stamps after 2037.
256 * Added new API functions pthread_getattr_default_np and
257 pthread_setattr_default_np to get and set the default pthread
258 attributes of a process.
260 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
261 This may improve lock scaling of existing programs on TSX capable systems.
262 When the --enable-lock-elision=yes parameter is specified at configure
263 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
266 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
267 availability). Implemented by Ryan S. Arnold.
269 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
273 * The following bugs are resolved with this release:
275 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
276 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
277 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
278 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
279 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
280 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
281 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
282 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
283 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
284 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
285 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
286 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
287 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
288 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
289 14879, 14889, 14893, 14898, 14914.
291 * Optimization of memcpy for MIPS.
293 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
294 EMFILE has been fixed (Bugzilla #14889).
296 * The add-on ports collection is now distributed in the "ports" subdirectory
297 of the main GNU C Library distribution, rather than separately.
299 * Port to ARM AArch64 contributed by Linaro.
301 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
302 Optimized versions of memcpy, memset, and memcmp added for System z10 and
304 Implemented by Andreas Krebbel.
306 * The new function secure_getenv allows secure access to the environment,
307 returning NULL if running in a SUID/SGID process. This function replaces
308 the internal function __secure_getenv.
310 * SystemTap static probes have been added into the dynamic linker.
311 Implemented by Gary Benson.
313 * Optimizations of string functions strstr, strcasestr and memmem.
314 Implemented by Maxim Kuvyrkov.
316 * The minimum Linux kernel version that this version of the GNU C Library
317 can be used with is 2.6.16.
319 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
320 powerpc POWER7. Implemented by Will Schmidt.
322 * New configure option --disable-nscd builds the C library such that it
323 never attempts to contact the Name Service Caching Daemon (nscd).
324 New configure option --disable-build-nscd avoids building nscd itself;
325 this is the default if --disable-nscd is used.
327 * Improved support for cross-compilation, including cross-testing and
328 bootstrap builds without a previously built glibc.
330 * Several testsuite tests are now able to test multiple IFUNC variants of an
331 interface, rather than just testing the one that would be chooen by
334 * New configure options --with-bugurl and --with-pkgversion, for
335 distributors to use to embed their bug-reporting and package version
336 information in --help and --version output.
338 * The ttyname and ttyname_r functions on Linux now fall back to searching for
339 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
340 allows creation of chroots without the procfs mounted on /proc.
342 * The `crypt' function now fails if passed salt bytes that violate the
343 specification for those values. On Linux, the `crypt' function will
344 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
345 enabled, and fail on encrypted strings using the MD5 or DES algorithm
346 when the mode is enabled.
348 * The `clock_*' suite of functions (declared in <time.h>) is now available
349 directly in the main C library. Previously it was necessary to link with
350 -lrt to use these functions. This change has the effect that a
351 single-threaded program that uses a function such as `clock_gettime' (and
352 is not linked with -lrt) will no longer implicitly load the pthreads
353 library at runtime and so will not suffer the overheads associated with
354 multi-thread support in other code such as the C++ runtime library.
356 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
361 * The following bugs are resolved with this release:
363 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
364 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
365 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
366 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
367 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
368 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
369 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
370 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
371 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
372 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
373 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
374 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
375 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
376 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
377 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
378 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
379 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
380 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
381 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
382 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
383 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
384 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
387 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
388 configuring glibc with:
389 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
390 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
391 Implemented by H.J. Lu.
395 + define static_assert
397 + do not declare gets
399 + declare at_quick_exit and quick_exit also for ISO C11
401 + aligned_alloc. NB: The code is deliberately allows the size parameter
402 to not be a multiple of the alignment. This is a moronic requirement
403 in the standard but it is only a requirement on the caller, not the
408 + uchar.h support added
410 + CMPLX, CMPLXF, CMPLXL added
412 Implemented by Ulrich Drepper.
414 * Support for the IA-64 has been moved to ports.
416 * Remove support for anything but ELF binary format
418 * Checking versions of poll, ppoll added.
419 Implemented by Ulrich Drepper.
421 * More generic and 64-bit performance optimizations to math functions.
422 Implemented by Ulrich Drepper.
424 * New configure option --enable-obsolete-rpc makes the deprecated RPC
425 headers and functions available at compile time as they were before
426 version 2.14. This option will be removed at some time in the future
427 after the TI-RPC library becomes fully sufficient for the needs of
428 existing applications.
430 * Compatibility code for Linux kernel versions before 2.4 has been removed.
431 Note that glibc is not expected to work with any Linux kernel version
434 * New header <sys/auxv.h> and function getauxval allowing easy access to
435 the AT_* key-value pairs passed from the Linux kernel. The header also
436 defines the HWCAP_* bits associated with the AT_HWCAP key.
438 * New locales: mag_IN
440 * New configure option --enable-systemtap builds SystemTap static probes
441 into libc for setjmp and longjmp and into libpthread for various operations.
442 So far the setjmp/longjmp probes and some of the libpthread probes are
443 provided only for i*86 and x86_64.
444 Implemented by Roland McGrath and Rayson Ho.
446 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
448 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
451 * More optimized functions for SPARC. Implemented by David S. Miller.
453 * Improved support for cross-compilation, especially bootstrap builds
454 without a previously built glibc.
456 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
457 Chris Metcalf from Tilera.
459 * Support for the old ARM ABI has been removed from ports. Only the EABI is
460 now supported for ARM processors.
462 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
463 as the name of the dynamic linker, to distinguish it from the
464 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
466 * Support for CRIS has been removed from ports.
468 * A new class of installed header has been documented for low-level
469 platform-specific functionality. PowerPC added the first instance with a
470 function to provide time base register access. Contributed by Tulio
471 Magno Quites Machado Filho.
473 * ix86 configurations now install header files that are consistent with
474 what x86-64 configurations install. These same header files can be used
475 for -m32, -m64, or -mx32 builds.
476 Contributed by H.J. Lu.
478 * Math library bug fixes. A thorough audit of all open math library bugs was
479 conducted by Joseph Myers. Significant progress was made on many math
480 library bugs resulting in more accurate exceptions and function results.
481 Many thanks to all those that contributed including Andreas Jaeger for his
482 patch review and work on the x87 trigonometric instruction issues.
484 * Timezone data is no longer installed. Timezone-related binaries and scripts
485 will continue to be installed. Users should obtain their timezone data from
486 their distribution provider or from the tzdata package at
487 <ftp://munnari.oz.au/pub/>.
491 * The following bugs are resolved with this release:
493 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
494 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
495 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
496 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
497 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
498 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
499 13484, 13506, 13515, 13523, 13524, 13538, 13540
501 * New program pldd to list loaded object of a process
502 Implemented by Ulrich Drepper.
504 * Add nss_db support back to glibc. No more dependency on Berkeley db
505 and support for initgroups lookups.
506 Implemented by Ulrich Drepper.
508 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
509 Contributed by HJ Lu.
511 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
512 Contributed by HJ Lu.
514 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
515 on x86-32 and x86-64.
516 Contributed by Liubov Dmitrieva.
518 * Optimized strchr and strrchr for SSE on x86-32.
519 Contributed by Liubov Dmitrieva.
521 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
522 for x86-64 and x86-32.
523 Contributed by Liubov Dmitrieva.
525 * New interfaces: scandirat, scandirat64
526 Implemented by Ulrich Drepper.
528 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
529 Implemented by Ulrich Drepper.
531 * nscd now also caches the netgroup database.
532 Implemented by Ulrich Drepper.
534 * Integrate libm with gcc's -ffinite-math-only option.
535 Implemented by Ulrich Drepper.
537 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
538 to math functions. Implemented by Ulrich Drepper.
540 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
541 Implemented by Ulrich Drepper.
543 * New Linux interfaces: process_vm_readv, process_vm_writev
545 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
546 Implemented by Ulrich Drepper.
548 * Optimized nearbyint and strcasecmp for PPC.
549 Implemented by Adhemerval Zanella.
551 * New locales: bho_IN, unm_US, es_CU, ta_LK
555 * The following bugs are resolved with this release:
557 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
558 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
559 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
560 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
561 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
562 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
563 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
564 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
565 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
566 12795, 12811, 12813, 12814, 12841
568 * The RPC implementation in libc is obsoleted. Old programs keep working
569 but new programs cannot be linked with the routines in libc anymore.
570 Programs in need of RPC functionality must be linked against TI-RPC.
571 The TI-RPC implementation is IPv6 enabled and there are other benefits.
573 Visible changes of this change include (obviously) the inability to link
574 programs using RPC functions without referencing the TI-RPC library and the
575 removal of the RPC headers from the glibc headers.
576 Implemented by Ulrich Drepper.
578 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
579 syncfs, setns, sendmmsg
581 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
582 yue_HK, lij_IT, mhr_RU
584 * New encodings: CP770, CP771, CP772, CP773, CP774
586 * New program sotruss to trace calls through PLTs
587 Implemented by Ulrich Drepper.
589 * The malloc hook implementation is marked deprecated and will be removed
590 from the default implementation in the next version. The design never
591 worked ever since the introduction of threads. Even programs which do
592 not create threads themselves can use multiple threads created internally.
596 * The following bugs are resolved with this release:
598 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
599 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
600 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
601 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
604 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
606 * POWER7 optimizations: memset, memcmp, strncmp
608 * New optimized string functions for x86-64: strnlen (SSE2),
609 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
610 Implemented by Ulrich Drepper.
614 * The following bugs are resolved with this release:
616 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
617 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
618 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
619 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
620 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
621 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
622 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
623 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
625 * New interfaces: pthread_getname_np, pthread_setname_np
627 * New Linux interface: recvmmsg
629 * STT_GNU_IFUNC implemented for Sparc by David Miller.
631 * The dynamic linker now recognizes supported ABI versions from the
632 EI_ABIVERSION field in the ELF header.
633 Implemented by Ulrich Drepper.
635 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
636 will not be used to fill in password fields in the passwd.byname replies.
637 Instead it is used to synthesize the shadow.byname table, should it be
638 missing. This is a useful mode in some installations involving Solaris.
639 Implemented by Ulrich Drepper.
641 * New locales: kok_IN, sq_MK, cv_RU
645 * The following bugs are resolved with this release:
647 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
648 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
649 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
650 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
651 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
652 10789, 10817, 10823, 10840, 10847
654 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
656 Implemented by Ulrich Drepper.
658 * Checking version of longjmp added that fails if an uninitialized stack
659 frame would be created. Implemented by Ulrich Drepper.
661 * STT_GNU_IFUNC is now supported in static executables.
662 Implemented by H.J. Lu.
664 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
666 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
667 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
668 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
669 Contributed by H.J. Lu.
671 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
672 Implemented by Ulrich Drepper.
674 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
676 Contributed by H.J. Lu.
678 * Support for fma instruction in AVX on x86-64.
679 Implemented by H.J. Lu and Ulrich Drepper.
681 * AVX support in x86-64 auditing support in ld.so.
682 Implemented by H.J. Lu.
684 * STB_GNU_UNIQUE support added.
685 Implemented by Ulrich Drepper.
687 * Implement second fallback mode for optimized DNS lookup for even more
688 broken environments. If two requests from the same port are not
689 handled correctly close the socket and open a new one before sending
690 the second request. The 'single-request-reopen' option in /etc/resolv.conf
691 can be used to select this mode right away, instead of rediscovering the
692 necessity is every process again.
693 Implemented by Ulrich Drepper.
695 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
696 Implemented by Adam Tkac.
698 * Optimized iconv conversions for S390x.
699 Implemented by Andreas Krebbel.
701 * Using condvars with PI mutexes is now more efficient due to kernel
702 support for requeueing to PI futexes. NPTL support added for x86-64.
703 Implemented by Ulrich Drepper.
705 * New locales: ps_AF, my_MM
709 * The following bugs are resolved with this release:
711 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
712 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
713 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
714 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
715 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
717 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
718 Implemented by Ulrich Drepper.
720 * New Linux interfaces: accept4, fallocate, fallocate64.
721 Implemented by Ulrich Drepper.
723 * Correct declarations of string function when used in C++ code. This
724 could lead to compile errors for invalid C++ code.
726 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
729 * New POSIX 2008 interface: psiginfo
730 Implemented by Ulrich Drepper.
732 * New ISO C++1x interfaces: quick_exit, at_quick_exit
733 Implemented by Ulrich Drepper.
735 * Support for selecting between multiple function definitions at runtime
736 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
738 * The libcrypt library can now use the hash function implementations in
739 NSS. Implemented by Ulrich Drepper.
741 * The malloc implementation can be compiled to be less memory efficient
742 but higher performing in multi-threaded programs.
743 Implemented by Ulrich Drepper.
745 * New locales: nan_TW@latin, ks_IN
747 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
748 Implemented by Ulrich Drepper.
750 * Extended printf hook support. It is possible to use user-defined types
751 and extend existing format specifiers.
752 Implemented by Ulrich Drepper.
754 * Handling for group shadow files has been added.
755 Implemented by Ulrich Drepper.
757 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
758 servers (the case, e.g., for some people using the built-in DNS
759 server in ADSL modems/routers). There is a once-per-process timeout
760 in case of a broken server. To avoid it, users can run nscd or put
761 'options single-request' in /etc/resolv.conf.
762 Implemented by Ulrich Drepper.
766 * The following bugs are resolved with this release:
768 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
769 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
770 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
771 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
772 6968, 6974, 6980, 6995, 7008, 7009, 7029
774 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
775 up at the same time. Implemented by Ulrich Drepper.
777 * TLS descriptors for LD and GD on x86 and x86-64.
778 Implemented by Alexandre Oliva.
780 * getaddrinfo now handles DCCP and UDPlite.
781 Implemented by Ulrich Drepper.
783 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
784 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
785 Implemented by Ulrich Drepper.
787 * New implementation of memmem, strstr, and strcasestr which is O(n).
788 Implemented by Eric Blake.
790 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
792 * Implement "e" option for popen to open file descriptor with the
793 close-on-exec flag set. Implemented by Ulrich Drepper.
795 * Implement "b" mode for fmemopen. In this mode writes writes don't
796 implicitly add a NUL byte and seeks from the end of the buffer really
797 use the buffer end, not the string length as the basis.
798 Implemented by Ulrich Drepper.
800 * Many functions, exported and internal, now atomically set the close-on-exec
801 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
803 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
805 Implemented by Pravin Satpute.
807 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
811 * The following bugs are resolved with this release:
813 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
814 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
815 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
816 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
817 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
818 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
819 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
821 * New locales: bo_CN, bo_IN, shs_CA.
823 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
825 * Sorting rules for some Indian languages (Devanagari and Gujarati).
826 Implemented by Pravin Satpute.
828 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
830 * nscd caches now all timeouts for DNS entries
831 Implemented by Ulrich Drepper.
833 * nscd is more efficient and wakes up less often.
834 Implemented by Ulrich Drepper.
836 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
837 vdprintf, and obstack_vprintf.
838 Implemented by Jakub Jelinek.
840 * Faster memset for x86-64.
841 Implemented by Harsha Jagasia and H.J. Lu.
843 * Faster memcpy on x86.
844 Implemented by Ulrich Drepper.
846 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
847 Implemented by Ulrich Drepper.
849 * Faster sqrt and sqrtf implemention for some PPC variants.
850 Implemented by Steven Munroe.
854 * The following bugs are resolved with this release:
856 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
857 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
858 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
859 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
860 5071, 5103, 5104, 5112, 5113, 5184, 5186
862 * More checking functions: fread, fread_unlocked, open*, mq_open.
863 Implemented by Jakub Jelinek and Ulrich Drepper.
865 * Extend fortification to C++. Implemented by Jakub Jelinek.
867 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
868 by not recognizing 'a' as a modifier when those specs are requested.
869 Implemented by Jakub Jelinek.
871 * PPC optimizations to math and string functions.
872 Implemented by Steven Munroe.
874 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
875 options to be passed. Implemented by Ulrich Drepper.
877 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
879 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
880 Implemented by Ulrich Drepper.
882 * Handle private futexes in the NPTL implementation.
883 Implemented by Jakub Jelinek and Ulrich Drepper.
885 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
886 Implemented by Roland McGrath and Ulrich Drepper.
888 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
890 * SHA-256 and SHA-512 based password encryption.
891 Implemented by Ulrich Drepper.
893 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
894 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
897 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
898 Implemented by Ulrich Drepper.
902 * The following bugs are resolved with this release:
904 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
905 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
906 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
907 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
908 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
909 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
910 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
913 * New Linux interfaces: epoll_pwait, sched_getcpu.
915 * New generic interfaces: strerror_l.
917 * nscd can now cache the services database. Implemented by Ulrich Drepper.
921 * The following bugs are resolved with this release:
923 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
924 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
925 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
926 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
927 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
928 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
929 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
930 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
931 3225, 3251, 3252, 3253, 3273
933 * For Linux, the sorting of addresses returned by getaddrinfo now also
934 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
935 Implemented by Ulrich Drepper.
937 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
938 Implemented by Ulrich Drepper.
940 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
942 * New iconv module for MIK. Contributed by Alexander Shopov.
944 * For sites with broken group and/or passwd database, the auto-propagate
945 option of nscd can prevent creating ID lookup entries from the results
946 of a name lookup and vice versa. This usually is no problem but some
947 site might have problems with the default behavior.
948 Implemented by Ulrich Drepper.
950 * Iterating over entire database in NIS can be slow. With the
951 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
952 to trade time for memory. The entire database will be read at once.
953 Implemented by Ulrich Drepper.
955 * The interfaces introduced in RFC 3542 have been implemented by
958 * Support for the new ELF hash table format was added by Ulrich Drepper.
960 * Support for priority inheritance mutexes added by Jakub Jelinek and
963 * Support for priority protected mutexes added by Jakub Jelinek.
965 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
966 or_IN, csb_PL, fy_NL, sr_ME.
970 * More overflow detection functions.
972 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
973 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
975 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
976 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
977 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
978 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
979 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
980 by Masahide Washizawa.
982 * It is now possible to install audit libraries for the dynamic linker using
983 LD_AUDIT. Implemented by Ulrich Drepper.
985 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
986 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
987 For a libc and libpthread that works well on Linux 2.4 kernels, we
988 recommend using the stable 2.3 branch.
990 * The new function open_wmemstream acts like open_memstream,
991 but uses a wchar_t wide character buffer.
993 * The new function ppoll is an improved version of poll, similar to pselect.
995 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
996 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
997 renameat, unlinkat, linkat, symlinkat, readlinkat.
999 * New Linux kernel system calls: unshare,
1000 inotify_init, inotify_add_watch, inotify_rm_watch.
1002 * The euidaccess function is now also known by the alias eaccess,
1003 for compatibility with some other systems.
1005 * Timezone data updated to 2006b version.
1009 * The following bugs are resolved with this release:
1011 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1012 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1013 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1014 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1015 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1016 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1018 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1020 * As of this release, GCC 4 can be used to compile the C Library.
1022 * Timezone data updated to 2005m version.
1026 * The following bugs are resolved with this release:
1028 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1029 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1030 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1031 777, 787, 821, 822, 823, 825
1033 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1037 * Support for RFC 3678. Real implementations exist only for Linux so far.
1038 Implemented by Ulrich Drepper.
1040 * nscd can now cache entries persistently. Expiring entries are reloaded.
1041 For speedups the cache can be shared in memory with client processes.
1042 Implemented by Ulrich Drepper.
1044 * nscd can now perform SELinux checks.
1045 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1047 * getaddrinfo queries are now cached. Canonical name lookup is performed
1049 Implemented by Ulrich Drepper.
1051 * The nothrow function attribute is used when headers are used by gcc when
1052 compiling C code. This can avoid significant amounts of exception
1055 * The malloc functions perform more error checking and are stricter when
1056 it comes to reacting on errors. The default action is to terminate
1057 the process after showing an error message. Implemented by Ulrich Drepper.
1059 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1060 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1062 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1063 namespaces using the new function dlmopen(). This feature is of course,
1064 like most other dynamic loading functionality, not available in statically
1065 linked applications. Implemented by Ulrich Drepper.
1067 * Low-overhead boundary checking variants of string and some stdio functions
1068 were added. These are to be used in conjunction with a gcc patch by
1069 Jakub Jelinek which adds calls to these functions if possible.
1070 Implemented by Jakub Jelinek and Ulrich Drepper.
1072 * Old code for several operating systems and machine architectures that
1073 have not been in working condition in a long time have been removed from
1074 the main source tree maintained by the GNU C Library's maintainers.
1075 These files are now reside in the separate `ports' source module
1076 that is usable as an add-on when building the library.
1080 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1081 interrogate the dynamic linker, compatible with the Solaris interface.
1083 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1084 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1086 * getifaddrs now uses the netlink interface on Linux to get its information.
1087 Implemented by Thorsten Kukuk.
1089 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1090 Implemented by Ulrich Drepper.
1092 * support for non-executable stacks on x86 has been added. Changes mostly
1095 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1098 * getaddrinfo now performs destination address selection according to
1103 * Thread-safe interfaces for many functions that access locale data
1104 were added in version 2.3, but these features were omitted from NEWS.
1105 Many functions have variants with an `_l' suffix that take a `locale_t'
1106 object as a parameter rather than consulting the current locale.
1107 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1108 create and maintain `locale_t' objects. Additionally, the new function
1109 `uselocale' sets "the current locale" (as used by functions not so
1110 parameterized) set for an individual thread. These features were added
1111 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1113 * The functions getresuid, getresgid, setresuid, and setresgid, which
1114 have long been available on Linux, are now declared in <unistd.h>
1115 and are now also available on the Hurd.
1117 * ELF thread-local storage support (TLS) now works on x86-64.
1119 * The new dynamic string token $LIB is expanded in shared library names.
1120 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1122 * Aldy Hernandez contributed complete software floating point support for
1123 PowerPC machines with no FPU.
1125 * fexecve is implemented on Linux.
1127 * The `btowc' function should work at least twice as fast due to
1128 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1130 * With approriate thread add-ons cancelable functions are now implemented
1131 in libc.so as well. No need to call the function in libpthread. This
1132 change allowed to finally disable the incorrect and expensive handling
1133 of weak definition in ld.so.
1135 * Yet more PLT entries in libc.so have been removed. We finally arrived
1136 at the bare minimum. Startup times improved appropriately.
1138 * Support for the new Linux/x86 system call interface was added. The
1139 AT_SYSINFO auxiliary vector entry is recognized and handled.
1143 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1146 * iconv (the program and the interface) now accepts empty names (excluding
1147 options like //TRANSLIT) to mean "use charset of current locale".
1149 * localedef can now transliterate characters in strings which are not in
1150 the provided charmap. The information from the input locale is used.
1152 * Prelinking support was added for ELF targets. This requires additional
1153 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1155 * Read-only stdio streams now use mmap to speed up operation by eliminating
1156 copying and buffer underflows. To use add 'm' to the mode string of
1157 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1159 * The malloc functions were completely rewritten by Wolfram Gloger based
1160 on Doug Lea's malloc-2.7.0.c.
1162 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1163 implementation of regex.
1165 * Bruno Haible upgraded the iconv and locale implementation to support
1168 * Contents of the LC_* and LANG environment variables in the CEN style are
1169 not recognized anymore. It never was used. Change by Ulrich Drepper.
1171 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1172 thread-local storage (TLS) ABI on some platforms.
1173 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1175 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1176 EUC-JISX0213, and TSCII.
1178 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1179 BSD-compatible interface for getting all network interface addresses.
1180 Implementation for IPv4 by Roland McGrath.
1182 * Loading of locale data is faster due to the introduction of a locale
1183 archive. Implemented by Roland McGrath and Ulrich Drepper.
1185 * Startup times are significantly reduced by not using exported functions
1186 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1189 * Steven Munroe contributed a port to PowerPC64/Linux.
1193 * The Hurd now uses the GNU libio implementation of stdio rather than the
1194 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1196 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1197 with the same behavior as the Linux system call of the same name.
1201 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1202 128-bit long double format.
1204 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1205 IBM1161, and IBM1162 charsets.
1207 * Andreas Jaeger contributed a port to x86-64/Linux.
1209 * Peter Bruin contributed a port to PowerPC/Hurd.
1211 * libc functions using I/O streams now can handle wide-oriented streams
1214 * optimizations in the dynamic linker. Binaries created by recent binutils
1215 versions start up quicker due to reduced time spent on relocations.
1217 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1221 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1222 asinh, atanh, j0 for the 128-bit long double format.
1224 * Bruno Haible updated all the code handling Unicode in some form to
1225 support Unicode 3.1.
1227 * Speed of regex for single-byte locales is back to previous levels.
1228 Patch by Isamu Hasegawa.
1230 * Alpha, SPARC, and IA-64 now also using floating stacks.
1232 * Startup time of internationalized applications greatly improved through
1233 iconv cache. Use iconvconfig to generate the cache file.
1234 Contributed by Ulrich Drepper.
1236 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1237 severe performance problems. Patch by David Mosberger.
1239 * The Hurd port got a lot more functionality like AIO, various stdio
1240 extensions, etc. Mainly done by Roland McGrath.
1242 * mtrace can now lookup symbols in shared libraries.
1246 * Intel's IA-64 math library is largely integrated. It provides fast and
1247 accurate implementatations for most basic and standard math functions
1248 in float, double, and long double format.
1250 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1251 and asin for the 96-bit long double format and asin, log, tan for the
1252 128-bit long double format.
1254 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1255 The basic double functions exist today. Contributed by Abraham Ziv
1256 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1257 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1259 * An asynchronous name lookup library was added. The interface is designed
1260 after POSIX AIO. The proposal was circulated beforehand to get comments.
1261 No negative ones came in. Implemented by Ulrich Drepper.
1263 * Port to S390/64bit contributed by Martin Schwidefsky
1264 <schwidefsky@de.ibm.com>.
1266 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1267 of functions for Linux/IA-64.
1269 * The RPC code is now thread safe. Threads can now use the same service
1270 of different services at the same time. Patch by Eric Norum
1271 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1273 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1274 family of functions for Linux/S390.
1276 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1277 of functions for Linux/x86.
1279 * Port to Linux/CRIS contributed by Axis Communications.
1283 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1284 we can now check for namespace violations and missing declarations. The
1285 result is that almost all headers are now Unix-compliant (as defined in
1286 the upcoming XPG6). The negative side is that some programs might need
1287 corrections, too, if they depend on the incorrect form of the headers in
1288 previous versions which defined too many symbols and included too many
1291 * regex now handles multibyte character sets correctly.
1292 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1294 * iconv (the program) does now conform to the upcoming XPG6 and handles
1295 charmaps. Instead of the charset names the path of charmaps can be
1296 provided and the conversion happens based on this data.
1297 Contributed by Ulrich Drepper.
1299 * The locale program now provides detailed information about the installed
1304 only lists the names of the supported locales
1308 provides details such as country, language, and codeset name.
1309 Contributed by Ulrich Drepper.
1313 * The gencat program now parses the input file according to the charset
1314 selected by the LC_CTYPE category. This is important for stateful
1315 character sets. To make generating catalogs easier there is a way
1316 to overwrite the charset selected by the locale: before the first
1317 message or $ quote line the catalog can contain a line like
1319 $ codeset=ISO-8859-2
1321 to select the charset (ISO-8859-2 in this case).
1323 Implemented by Shinya Hanataka and Ulrich Drepper.
1325 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1326 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1327 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1329 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1330 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1332 * The LANGUAGE environment variable is now ignored unless the locale is
1333 changed from the default "C" locale.
1335 * The usual bug fixes.
1339 * Greg McGary added runtime support for bounds checking using gcc's
1340 new -fbounded-pointers option. ix86 target is complete. PowerPC
1343 * Thorsten Kukuk added secure mode support to nscd.
1345 * The Berkeley db libraries have been removed.
1347 Related, the nss_db module is now in a separate package since it
1348 obviously requires a database library being available.
1350 * Wide character I/O streams implemented by Ulrich Drepper.
1352 * Functions from the extended socket API added by Ulrich Drepper.
1354 * Functions feenableexcept and fedisableexcept to control the
1355 behaviour of individual exceptions have been added by Andreas Jaeger.
1357 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1359 * The resolver code has been updated from bind 8.2.3-T5B which supports
1360 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1363 This change could in some situations effect backward compatibility. Since
1364 now `_res' is a thread-local instead of a global variable, modifying it
1365 in one thread does not have any effect in other threads.
1367 The resolver library was also extended to allow IPv6 as the transport
1368 protocol for the requests. This work was done by Stig Venaas.
1370 * Compatibility code for K&R C compilers has been removed from the
1371 header files. A ISO C compiler is needed to use the library
1372 (conforming to either C89 or C99 standard).
1374 * Complete rewrite of the localedef program to support multibyte character
1375 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1376 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1377 Implemented by Ulrich Drepper.
1379 Bruno Haible significantly improved the generation and use of the data
1380 structures for the wide character tables.
1382 * Plural handling in gettext implemented by Ulrich Drepper.
1384 * The utmp daemon has been removed.
1386 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1388 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1391 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1393 * POSIX barriers implemented by Kaz Kylheku.
1395 * POSIX spawn function family implemented by Ulrich Drepper.
1397 * POSIX spinlocks are now available.
1399 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1401 * the configure option --enable-kernel=X.Y.Z allows to strip out
1402 compatibility for kernel versions before X.Y.Z. This is currently only
1403 implemented for Linux.
1405 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1406 field sin6_scope_id. This means that all programs using IPv6 should be
1407 recompiled. Don't expect binary compatibility with previous glibc
1410 * various conversion modules for IBM character sets contributed by
1413 * IA-64 port by Jes Sorensen and HJ Lu.
1427 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1429 * New xdr functions are added; some rpc functions are now 64bit clean.
1431 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1433 * Fixed known incompatibilities with glibc 2.0.
1435 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1437 * Optimized a number of functions (especially the ELF dynamic loader).
1439 * Update timezone data files.
1441 * lots of charmaps corrections
1443 * some new locale definitions and charmaps
1448 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1449 conform to POSIX member type requirements. Symbol versions have been
1450 adjusted as needed within the library, and for direct use by applications,
1451 but there is potential for problems if third-party libraries use
1452 struct timeval as part of their interface. This does not present
1453 a problem for X and other "essential" system libraries.
1455 * An additional locale model to support C++ Standard Library locale
1456 model and probably more was implemented by Ulrich Drepper.
1458 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1461 * Miles Bader provided the `argp' function family to support hierachical
1462 command line argument parsing, layered on top of getopt.
1464 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1466 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1469 * scanf recognizes the %a and %A format for scanning floating point numbers.
1471 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1472 information and interfaces for the available integer types.
1474 * about 130 new math functions were added to implement the ISO C9x math
1477 * the new header <complex.h> contains definitions of the complex math
1478 functions from ISO C 9X.
1480 * the new header <tgmath.h> defines generic macros to use complex or
1481 real valued functions.
1483 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1485 * Andreas Jaeger provided a test suite for the math library.
1487 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1489 * Ulrich Drepper added character set conversion functions (iconv).
1491 * Optimized string functions have been added.
1493 * The localedata addon is now part of glibc.
1495 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1497 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1498 daemon for NSS (nscd).
1500 Missing a better place here are some numbers on improvements. Under
1501 Linux 2.1.125 un-tar-ing the kernel sources takes
1505 using local files 12.19s 6.88s 22.91s
1507 using NIS 13.92s 8.91s 26.34s
1509 using NIS & nscd 10.37s 7.34s 25.30s
1511 using NIS+ 27.57s 30.37s 640.46s
1513 using NIS+ & nscd 10.25s 7.83s 26.51s
1515 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1517 Keep in mind that non-namelookup related operations dominate above times.
1518 It was just a common complain that using NIS+ unpacking the kernel is
1521 [1] The old nscd implementation is not available anymore since it was
1522 distributed with glibc up to version 2.0.98 and thus is now replaced.
1524 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1526 * Mark Kettenis provided a Hesiod NSS module.
1528 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1529 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1531 * rcmd can now handle netgroups (Dick Streefland).
1533 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1536 * Support for the IPv6 protocol has been added to the socket API, as per the
1537 latest draft standards.
1539 * Support for Linux 2.2 has been added.
1541 * Interface changes relative to the latest 2.0.x release:
1542 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1543 addseverity NEW: Unix98
1544 alphasort64 NEW: LFS
1545 argp_err_exit_status NEW: argp, GNU ext
1546 argp_error NEW: argp, GNU ext
1547 argp_failure NEW: argp, GNU ext
1548 argp_help NEW: argp, GNU ext
1549 argp_parse NEW: argp, GNU ext
1550 argp_program_bug_address NEW: argp, GNU ext
1551 argp_program_version NEW: argp, GNU ext
1552 argp_program_version_hook NEW: argp, GNU ext
1553 argp_state_help NEW: argp, GNU ext
1554 argp_usage NEW: argp, GNU ext
1555 authdes_create NEW: Secure RPC
1556 authdes_getucred NEW: Secure RPC
1557 authdes_pk_create NEW: Secure RPC
1558 backtrace NEW: GNU ext.
1559 backtrace_symbols NEW: GNU ext.
1560 backtrace_symbols_fd NEW: GNU ext.
1562 cacosf NEW: ISO C 9x
1563 cacosh NEW: ISO C 9x
1564 cacoshf NEW: ISO C 9x
1565 cacoshl NEW: ISO C 9x
1566 cacosl NEW: ISO C 9x
1573 casinf NEW: ISO C 9x
1574 casinh NEW: ISO C 9x
1575 casinhf NEW: ISO C 9x
1576 casinhl NEW: ISO C 9x
1577 casinl NEW: ISO C 9x
1579 catanf NEW: ISO C 9x
1580 catanh NEW: ISO C 9x
1581 catanhf NEW: ISO C 9x
1582 catanhl NEW: ISO C 9x
1583 catanl NEW: ISO C 9x
1584 cbc_crypt NEW: Secure RPC
1588 ccoshf NEW: ISO C 9x
1589 ccoshl NEW: ISO C 9x
1595 cimagf NEW: ISO C 9x
1596 cimagl NEW: ISO C 9x
1597 clearerr_locked REMOVED
1598 clntunix_create NEW: sunrpc ext
1600 clog10 NEW: ISO C 9x
1601 clog10f NEW: ISO C 9x
1602 clog10l NEW: ISO C 9x
1612 cprojf NEW: ISO C 9x
1613 cprojl NEW: ISO C 9x
1615 crealf NEW: ISO C 9x
1616 creall NEW: ISO C 9x
1621 csinhf NEW: ISO C 9x
1622 csinhl NEW: ISO C 9x
1625 csqrtf NEW: ISO C 9x
1626 csqrtl NEW: ISO C 9x
1630 ctanhf NEW: ISO C 9x
1631 ctanhl NEW: ISO C 9x
1633 des_setparity NEW: Secure RPC
1634 ecb_crypt NEW: Secure RPC
1635 endutxent NEW: Unix98
1637 exp10f NEW: ISO C 9x
1638 exp10l NEW: ISO C 9x
1642 fattach NEW: STREAMS
1643 fdetach NEW: STREAMS
1647 feclearexcept NEW: ISO C 9x
1648 fegetenv NEW: ISO C 9x
1649 fegetexceptflag NEW: ISO C 9x
1650 fegetround NEW: ISO C 9x
1651 feholdexcept NEW: ISO C 9x
1653 feraiseexcept NEW: ISO C 9x
1654 ferror_locked REMOVED
1655 fesetenv NEW: ISO C 9x
1656 fesetexceptflag NEW: ISO C 9x
1657 fesetround NEW: ISO C 9x
1658 fetestexcept NEW: ISO C 9x
1659 feupdateenv NEW: ISO C 9x
1660 fflush_locked REMOVED
1664 fgets_unlocked NEW: GNU ext.
1665 fileno_locked REMOVED
1677 fputc_locked REMOVED
1678 fputs_unlocked NEW: GNU ext.
1679 fread_unlocked NEW: GNU ext.
1684 fstatvfs NEW: Unix98
1688 ftruncate64 NEW: LFS
1690 fwrite_unlocked NEW: GNU ext.
1691 gai_strerror NEW: IPv6
1695 getchar_locked REMOVED
1697 getdate_err NEW: Unix98
1698 getdate_r NEW: GNU ext.
1700 getnameinfo NEW: IPv6
1701 getnetname NEW: Secure RPC
1702 getpmsg NEW: STREAMS
1703 getpt NEW: Unix98 PTY
1704 getrlimit64 NEW: LFS
1705 getutxent NEW: Unix98
1706 getutxid NEW: Unix98
1707 getutxline NEW: Unix98
1708 glob64 NEW: GNU ext.
1709 globfree64 NEW: GNU ext.
1710 gnu_get_libc_release NEW: GNU ext.
1711 gnu_get_libc_version NEW: GNU ext.
1712 grantpt NEW: Unix98 PTY
1713 host2netname NEW: Secure RPC
1715 iconv_close NEW: iconv
1716 iconv_open NEW: iconv
1717 if_freenameindex NEW: IPv6
1718 if_indextoname NEW: IPv6
1719 if_nameindex NEW: IPv6
1720 if_nametoindex NEW: IPv6
1721 in6addr_any NEW: IPv6
1722 in6addr_loopback NEW: IPv6
1723 inet6_isipv4mapped NEW: IPv6
1724 isastream NEW: STREAMS
1725 iswblank NEW: GNU ext.
1726 key_decryptsession NEW: Secure RPC
1727 key_decryptsession_pk NEW: Secure RPC
1728 key_encryptsession NEW: Secure RPC
1729 key_encryptsession_pk NEW: Secure RPC
1730 key_gendes NEW: Secure RPC
1731 key_get_conv NEW: Secure RPC
1732 key_secretkey_is_set NEW: Secure RPC
1733 key_setnet NEW: Secure RPC
1734 key_setsecret NEW: Secure RPC
1735 llrint NEW: ISO C 9x
1736 llrintf NEW: ISO C 9x
1737 llrintl NEW: ISO C 9x
1738 llround NEW: ISO C 9x
1739 llroundf NEW: ISO C 9x
1740 llroundl NEW: ISO C 9x
1745 lrintf NEW: ISO C 9x
1746 lrintl NEW: ISO C 9x
1747 lround NEW: ISO C 9x
1748 lroundf NEW: ISO C 9x
1749 lroundl NEW: ISO C 9x
1751 makecontext NEW: Unix98
1752 mempcpy NEW: GNU ext.
1755 modify_ldt NEW: kernel
1759 nearbyint NEW: ISO C 9x
1760 nearbyintf NEW: ISO C 9x
1761 nearbyintl NEW: ISO C 9x
1762 netname2host NEW: Secure RPC
1763 netname2user NEW: Secure RPC
1764 nexttoward NEW: ISO C 9x
1765 nexttowardf NEW: ISO C 9x
1766 nexttowardl NEW: ISO C 9x
1770 passwd2des NEW: Secure RPC
1772 pow10f NEW: GNU ext.
1773 pow10l NEW: GNU ext.
1776 printf_size NEW: GNU ext.
1777 printf_size_info NEW: GNU ext.
1778 profil_counter REMOVED
1779 pthread_mutexattr_getkind_np REPLACED
1780 pthread_mutexattr_setkind_np REPLACED
1781 ptsname NEW: Unix98 PTY
1782 ptsname_r NEW: Unix98 PTY
1784 putchar_locked REMOVED
1785 putgrent NEW: GNU ext.
1787 putpmsg NEW: STREAMS
1788 pututxline NEW: Unix98
1792 readdir64_r NEW: LFS
1793 remquo NEW: ISO C 9x
1794 remquof NEW: ISO C 9x
1795 remquol NEW: ISO C 9x
1797 roundf NEW: ISO C 9x
1798 roundl NEW: ISO C 9x
1800 scalbln NEW: ISO C 9x
1801 scalblnf NEW: ISO C 9x
1802 scalblnl NEW: ISO C 9x
1804 sendfile NEW: kernel
1805 setcontext NEW: Unix98
1806 setrlimit64 NEW: LFS
1807 setutxent NEW: Unix98
1809 sigignore NEW: Unix98
1810 sigqueue NEW: POSIX.1b
1811 sigrelse NEW: Unix98
1812 sigset NEW: POSIX.1b
1813 sigtimedwait NEW: POSIX.1b
1814 sigwaitinfo NEW: POSIX.1b
1815 sincos NEW: GNU ext.
1816 sincosf NEW: GNU ext.
1817 sincosl NEW: GNU ext.
1821 strcasestr NEW: GNU ext.
1822 strtoimax NEW: ISO C 9x
1823 strtoumax NEW: ISO C 9x
1824 strverscmp NEW: GNU ext.
1825 svcauthdes_stats NEW: Secure RPC
1826 svcunix_create NEW: sunrpc etx
1827 svcunixfd_create NEW: sunrpc ext
1828 swapcontext NEW: Unix98
1829 tcgetsid NEW: Unix98 PTY
1830 tdestroy NEW: GNU ext.
1831 tgamma NEW: ISO C 9x
1832 tgammaf NEW: ISO C 9x
1833 tgammal NEW: ISO C 9x
1837 truncf NEW: ISO C 9x
1838 truncl NEW: ISO C 9x
1840 unlockpt NEW: Unix98 PTY
1841 updwtmpx NEW: Unix98
1842 user2netname NEW: Secure RPC
1843 utmpxname NEW: Unix98
1844 versionsort NEW: GNU ext.
1845 versionsort64 NEW: GNU ext.
1847 wcscasecmp NEW: GNU ext.
1848 wcsncasecmp NEW: GNU ext.
1849 wcsnlen NEW: GNU ext.
1850 wcstoimax NEW: ISO C 9x
1851 wcstoll NEW: ISO C 9x
1852 wcstoull NEW: ISO C 9x
1853 wcstoumax NEW: ISO C 9x
1855 wordexp NEW: POSIX.2
1856 wordfree NEW: POSIX.2
1857 write_profiling REMOVED
1858 xdecrypt NEW: Secure RPC
1859 xdr_authdes_cred NEW: Secure RPC
1860 xdr_authdes_verf NEW: Secure RPC
1861 xdr_cryptkeyarg NEW: Secure RPC
1862 xdr_cryptkeyarg2 NEW: Secure RPC
1863 xdr_cryptkeyres NEW: Secure RPC
1864 xdr_getcredres NEW: Secure RPC
1865 xdr_key_netstarg NEW: Secure RPC
1866 xdr_key_netstres NEW: Secure RPC
1867 xdr_keybuf NEW: Secure RPC
1868 xdr_keystatus NEW: Secure RPC
1869 xdr_netnamestr NEW: Secure RPC
1870 xdr_sizeof NEW: Secure RPC
1871 xdr_unixcred NEW: sunrpc ext
1872 xencrypt NEW: Secure RPC
1873 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1884 * inet_ntoa is thread-safe
1886 * updwtmp is moved from libutil to libc
1888 * rewrite of cbrt function
1890 * update of timezone data
1904 * add atoll function
1906 * fix complex problems in Berkeley DB code
1908 * fix math functions
1912 * fixed lots of header problems (especially Linux/GNU specific)
1914 * dynamic loader preserves all registers
1916 * Roland McGrath provided support for handling of auxiliary objects in
1917 the ELF dynamic loader.
1919 * support for parallel builds is improved
1923 * GNU extensions are no longer declared by default. To enable them you
1924 must define the macro `_GNU_SOURCE' in your program or compile with
1927 * The library has changed from using GNU ld symbol aliases to using weak
1928 symbols where available. The ELF object file format supports weak
1929 symbols; GNU ld also supports weak symbols in the a.out format. (There
1930 is also now support for other GNU ld extensions in ELF. Use the
1931 `--with-elf' option to configure to indicate you have ELF, and
1932 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1933 of many files which contained only symbol aliases, reducing the size of
1934 the source and the compiled library; many other files were renamed to
1935 less cryptic names previously occupied by the symbol alias files.
1936 There is a new header file <elf.h> for programs which operate on
1937 files in the ELF format.
1939 * Converted to Autoconf version 2, so `configure' has more options.
1940 Run `configure --help' to see the details.
1942 * The library can now be configured to build profiling, highly-optimized
1943 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1944 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1945 `configure' enable building these extra libraries. The shared library is
1946 built by default when using both ELF and GNU ld. When shared libraries
1947 are enabled, the new library `-ldl' is available for arbitrary run-time
1948 loading of shared objects; its interface is defined in <dlfcn.h>. The
1949 new header file <link.h> gives access to the internals of the run-time
1950 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1951 application of same name on other systems and it provides information
1952 about dynamically linked binaries.
1954 * The C library now provides the run-time support code for profiling
1955 executables compiled with `-pg'. Programs can control the profiling code
1956 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1957 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1958 the support for this file format was contributed by David Mosberger-Tang.
1960 * The math code has been replaced with a math library based on fdlibm from
1961 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1962 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1963 functions. The math functions now reside in a separate library, so
1964 programs using them will need to use `-lm' their linking commands.
1966 * John C. Bowman contributed optimized ix87 assembler inline functions.
1968 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1969 mechanism similar to that found in Solaris 2. This is now used for the
1970 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1971 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1972 file controls what services are used for each individual database. This
1973 works by loading shared libraries with names specified in `nsswitch.conf',
1974 so service modules can be changed or added at any time without even
1975 relinking any program. Currently there are the file, db, and NIS based
1976 NSS services available.
1978 * The new functions `strtoq' and `strtouq' parse integer values from
1979 strings, like `strtol' and `strtoul', but they return `long long int' and
1980 `unsigned long long int' values, respectively (64-bit quantities).
1982 * The new functions `strtof' and `strtold' parse floating-point values from
1983 strings, like `strtod', but they return `float' and `long double' values,
1984 respectively (on some machines `double' and `long double' are the same).
1986 * Ulrich Drepper has contributed new implementations of the floating-point
1987 printing and reading code used in the `printf' family of functions and
1988 `strtod', `strtof', and `strtold'. These new functions are perfectly
1989 accurate, and much faster than the old ones.
1991 * The implementation of the POSIX locale model was completely rewritten by
1992 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1993 to compile the POSIX locale definition.
1995 * The former dummy implementations of the strcoll and strxfrm function are
1996 now replaced by fully functional code contributed by Ulrich Drepper. The
1997 collation information comes from the POSIX locale definitions.
1999 * The new header <langinfo.h> defines an interface for accessing
2000 various locale-dependent data (using the locale chosen with `setlocale').
2002 * Ulrich Drepper has contributed a new suite of functions for operation on
2003 wide-character and multibyte-character strings, in <wchar.h>;
2004 and classification and case conversion of wide characters, in <wctype.h>.
2005 These new functions are conforming to the ISO C, Amendement 1 specification.
2007 * There is now a second implementation of the standard I/O library available.
2008 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2009 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2011 * You can now use positional parameter specifications in format strings
2012 for the `printf' and `scanf' families of functions. For example,
2013 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2014 ``Number 6, Mr Jones''. This is mainly useful when providing different
2015 format strings for different languages, whose grammars may dictate
2016 different orderings of the values being printed. To support this
2017 feature, the interface for `register_printf_handler' has changed; see
2018 the header file <printf.h> for details.
2020 * The `printf' and `scanf' families of functions now understand a new
2021 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2022 to group numbers as indicated by the locale; for `scanf' and friends, this
2023 says to accept as valid only a number with all the proper grouping
2024 separators in the right places. In the default "C" locale, numbers are
2025 not grouped; but locales for specific countries will define the usual
2026 conventions (i.e. separate thousands with `,' in the US locale).
2028 * The pgrp functions have been regularized, slightly incompatibly but much
2029 less confusingly. The core functions are now `getpgid' and `setpgid',
2030 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2031 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2032 provided for compatibility. There is no longer an incompatible `getpgrp'
2033 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2035 * The new header file <fts.h> and suite of functions simplify programs that
2036 operate on directory trees. This code comes from 4.4 BSD.
2038 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2039 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2040 NSS scheme used in glibc.
2042 * There is a new malloc debugging hook `__memalign_hook'.
2044 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2045 `unsigned int' in <sys/types.h>. These are for compatibility only and
2046 their use is discouraged.
2048 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2049 done differently, so that it works even without GNU ld.
2051 * New function `euidaccess' checks allowed access to a file like `access',
2052 but using the effective IDs instead of the real IDs.
2054 * The time zone data files have been updated for the latest and greatest
2055 local time conventions of the countries of the world.
2057 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2060 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2061 for formatting floating-point numbers. They are provided only for
2062 compatibility; new programs should use `sprintf' instead. There are
2063 also equivalent function for the `long double' floating-point type and
2064 all functions also exist in a reentrant form.
2066 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2067 functions for maintaining the login-record files (primarily of use to
2068 system programs such as `login'), and convenient functions for
2069 allocating and initializing a pseudo-terminal (pty) device.
2071 * Ulrich Drepper has contributed new support for System V style
2072 shared memory and IPC on systems that support it.
2074 * Ulrich Drepper has contributed several miscellaneous new functions found
2075 in System V: The `hsearch' family of functions provide an effective
2076 implementation of hash tables; `a64l' and `l64a' provide a very simple
2077 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2080 * Ulrich Drepper has contributed new reentrant counterparts for the
2081 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2083 * Ulrich Drepper has contributed new, highly-optimized versions of several
2084 string functions for the i486/Pentium family of processors.
2086 * Ulrich Drepper has updated the Linux-specific code, based largely
2087 on work done in Hongjiu Lu's version of GNU libc for Linux.
2088 The GNU library now supports Linux versions 2.0.10 and later,
2089 using the ELF object file format (i[3456]86-*-linux).
2091 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2093 * David Mosberger-Tang and Richard Henderson have ported the C library
2094 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2095 dynamic linking support for ELF/Alpha.
2097 * Richard Henderson contributed several Alpha optimized assembler function
2098 for arithmetic and string handling.
2100 * Ulrich Drepper has contributed a new set of message catalog functions to
2101 support multiple languages using the <libintl.h> interface, for use with
2102 his new package GNU gettext. Translation volunteers have contributed
2103 catalogs of the library's messages in Spanish, German, and Korean.
2105 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2106 program and the `catgets' function for reading the catalog files it
2107 creates. (The <libintl.h> interface is preferred; we include the
2108 <nl_types.h> interface using `catgets' only for source compatibility with
2109 programs already written to use it.)
2111 * New header file <values.h> gives SVID-compatible names for <limits.h>
2114 * Various new macros, declarations, and small header files for compatibility
2117 * New function `group_member' is a convenient way to check if a process has
2118 a given effective group ID.
2120 * When using GCC 2.7 and later, the socket functions are now declared in a
2121 special way so that passing an argument of type `struct sockaddr_in *',
2122 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2123 `struct sockaddr *' type, does not generate a type-clash warning.
2125 * New function `error' declared in header file <error.h> is a convenient
2126 function for printing error messages and optionally exiting; this is the
2127 canonical function used in GNU programs. The new functions `err', `warn',
2128 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2129 doing the same thing.
2131 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2132 POSIX.2 `glob' function to do ~ and {...} expansion.
2134 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2135 `clearenv' which is used in POSIX.9 is also available.
2137 * New function `getsid' returns session ID number on systems that support it.
2139 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2140 files <db.h> and <mpool.h> provide a rich set of functions for several
2141 types of simple databases stored in memory and in files, and <ndbm.h> is
2142 an old `ndbm'-compatible interface using the `db' functions. Link with
2143 `-ldb' to get these functions.
2145 * New macro `strdupa' copies a string like `strdup', but uses local stack
2146 space from `alloca' instead of dynamic heap space from `malloc'.
2148 * New function `strnlen' is like `strlen' but searches only a given maximum
2149 number of characters for the null terminator. `stpncpy', `strndup' and
2150 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2153 * New function `statfs' in header <sys/statfs.h>.
2155 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2156 provide convenient functions for operating on blocks of null-terminated
2159 * A new suite of functions in <utmp.h> handle all the details of reading
2160 and writing the utmp file.
2162 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2165 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2166 completely POSIX compliant and also implemented the extended functionality
2167 to handle alternate digit representation and alternate era date formats.
2169 * Ulrich Drepper provided an implementation of the `strptime' function
2170 defined in XPG4.2 which transforms a string into a `struct tm' value.
2172 * Paul Eggert provided the tzselect shell script as part of the timezone
2173 code. The shell script makes it easy to select the correct timezone
2176 * The implementation of the malloc family of functions is completely replaced
2177 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2178 The implementation uses the mmap function (if available) and it is
2179 optimized for the use in multi threaded programs.
2181 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2182 functions. This new functionality is usable by specifying a special
2183 salt string and it is compatible with implementation on *BSD systems.
2185 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2186 `getsubopt' to handle second level command line options, `bsd_signal'
2187 to access BSD style `signal' functionality, the obsolete `regexp' style
2190 * the `lchown' function is available on system which support this
2193 * The implementation of the shadow password handling function was contributed
2196 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2198 * POSIX.1g support was added. The <sys/select.h> header is available,
2199 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2200 implementation of `getaddrinfo'.
2204 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2206 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2207 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2209 * The new function `daemon' from 4.4 BSD is useful for server programs that
2210 want to put themselves in the background.
2212 * Joel Sherrill has contributed support for several standalone boards that
2213 run without an operating system.
2215 * `printf', `scanf' and friends now accept a `q' type modifier for long
2216 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2218 * All of the code taken from BSD (notably most of the math and networking
2219 routines) has been updated from the BSD 4.4-Lite release.
2221 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2223 * The new functions `getdomainname' and `setdomainname' fetch or change the
2224 YP/NIS domain name. These are system calls which exist on systems which
2227 * The time zone data files have been updated for the latest international
2230 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2231 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2235 * The C library now includes support for Sun RPC, from Sun's free
2236 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2237 are included. (There is still no support for YP.)
2239 * Tom Quinn has contributed a port of the C library to SGI machines running
2240 Irix 4 (mips-sgi-irix4).
2242 * The new `lockf' function is a simplified interface to the locking
2243 facilities of `fcntl', included for compatibility.
2245 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2247 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2249 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2252 * The error message printed by `assert' for a failed assertion now includes
2253 the name of the program (if using GNU ld) and the name of the calling
2254 function (with versions of GCC that support this).
2256 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2258 * The library now includes the <sys/mman.h> header file and memory
2259 management functions `mmap', `munmap', `mprotect', `msync', and
2260 `madvise', on systems that support those facilities.
2262 * The interface for `mcheck' has changed slightly: the function called to
2263 abort the program when an allocation inconsistency is detected now takes
2264 an argument that indicates the type of failure. The new function
2265 `mprobe' lets you request a consistency check for a particular block at
2266 any time (checks are normally done only when you call `free' or `realloc'
2269 * It is now possible to easily cross-compile the C library, building on one
2270 system a library to run on another machine and/or operating system. All
2271 you need to do is set the variable `HOST_CC' in `configparms' to the
2272 native compiler for programs to run on the machine you are building on (a
2273 few generator programs are used on Unix systems); set `CC' to the
2276 * The new function `fexecve' (only implemented on the GNU system) executes
2277 a program file given a file descriptor already open on the file.
2281 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2282 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2284 * You can set the variable `libprefix' in `configparms' to specify a prefix
2285 to be prepended to installed library files; this makes it easy to install
2286 the GNU C library to be linked as `-lgnuc' or whatever.
2288 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2289 copies a limited number of characters from a string, and returns the
2290 address of the last character written.
2292 * You no longer need to check for whether the installed `stddef.h' is
2293 compatible with the GNU C library. configure now checks for you.
2295 * You can now define a per-stream `fileno' function to convert the
2296 stream's cookie into an integral file descriptor.
2298 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2299 allocates zero bytes of storage, and returns a unique pointer which
2300 you can pass to `realloc' or `free'. The behavior is undefined if
2301 you dereference this pointer.
2303 * The C library now runs on Sony NEWS m68k machines running either
2304 NewsOS 3 or NewsOS 4.
2306 * The new `syscall' function is a system-dependent primitive function
2307 for invoking system calls. It has the canonical behavior on Unix
2308 systems, including unreliable return values for some calls (such as
2309 `pipe', `fork' and `getppid').
2311 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2312 to `EAGAIN', which is the preferred name. On systems whose kernels
2313 use two distinct codes, the C library now translates EWOULDBLOCK to
2314 EAGAIN in every system call function.
2318 * The GNU C Library Reference Manual is now distributed with the library.
2319 `make dvi' will produce a DVI file of the printed manual.
2320 `make info' will produce Info files that you can read on line using C-h i
2321 in Emacs or the `info' program.
2322 Please send comments on the manual to bug-glibc-manual@gnu.org.
2324 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2326 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2328 * Jason Merrill has contributed a port to the Sequent Symmetry running
2329 Dynix version 3 (i386-sequent-dynix).
2331 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2332 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2334 * New function `memory_warnings' lets you arrange to get warnings when
2335 malloc is running out of memory to allocate, like Emacs gives you.
2337 * The C library now contains the relocating allocator used in Emacs 19 for
2338 its editing buffers. This allocator (ralloc) minimizes allocation
2339 overhead and fragmentation by moving allocated regions around whenever it
2340 needs to. You always refer to a ralloc'd region with a "handle" (a
2341 pointer to a pointer--an object of type `void **').
2343 * There is a new `printf' format: `%m' gives you the string corresponding
2344 to the error code in `errno'.
2346 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2347 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2348 pass, the `a' modifier says to fill in a `char **' you pass with a
2351 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2352 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2353 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2355 * `mkstemp' is a traditional Unix function to atomically create and open a
2356 uniquely-named temporary file.
2360 * The standard location for the file that says what the local timezone is
2361 has changed again. It is now `/usr/local/etc/localtime' (or more
2362 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2364 * The distribution no longer contains any files with names longer than 14
2367 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2368 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2370 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2374 * The configuration process has changed quite a bit. The `configure'
2375 script is now used just like the configuration scripts for other GNU
2376 packages. The `sysdeps' directory hierarchy is much rearranged.
2377 The file `INSTALL' explains the new scheme in detail.
2379 * The header files no longer need to be processed into ANSI C and
2380 traditional C versions. There is just one set of files to install, and
2381 it will work with ANSI or old C compilers (including `gcc -traditional').
2383 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2384 MIPS DECStation running Ultrix 4.
2386 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2387 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2388 made itself into a shared library.
2390 * Yet further improved support for the i386, running 4.3 BSD-like systems
2391 (such as Mach 3 with the Unix single-server), or System V.
2393 * New function `strncasecmp' to do case-insensitive string comparison
2394 with limited length.
2396 * New function `strsep' is a reentrant alternative to `strtok'.
2398 * New functions `scandir' and `alphasort' for searching directories.
2400 * New function `setenv' is a better interface to `putenv'.
2402 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2403 function for traversing a directory tree.
2405 * The GNU obstack package is now also part of the C library.
2406 The new function `open_obstack_stream' creates a stdio stream that
2407 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2408 formatted output directly to an obstack.
2410 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2411 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2413 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2415 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2416 things to your strings.
2418 * There are some new test programs: test-fseek, testmb, and testrand.
2420 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2421 These ports are not finished, but are a good starting place for really
2422 supporting those systems.
2424 * `/etc/localtime' is now the standard location for the file that says what
2425 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2426 This follows the general principle that `/etc' is the place for all local
2427 configuration files.
2429 * The C library header files now use `extern "C"' when used by the C++
2430 compiler, so the C library should now work with C++ code.
2432 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2433 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2436 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2437 function which uses the `merge sort' algorithm, and is said to be
2438 significantly faster than the old GNU `qsort' function. Merge sort is
2439 now the standard `qsort' function. The new algorithm can require a lot
2440 of temporary storage; so, the old sorting function is called when the
2441 required storage is not available.
2443 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2444 provides the Unix `crypt' function, plus some other entry points.
2446 * The code and header files taken from 4.4 BSD have been updated with the
2447 latest files released from Berkeley.
2449 ----------------------------------------------------------------------
2450 Copyright information:
2452 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2454 Permission is granted to anyone to make or distribute verbatim copies
2455 of this document as received, in any medium, provided that the
2456 copyright notice and this permission notice are preserved,
2457 thus giving the recipient permission to redistribute in turn.
2459 Permission is granted to distribute modified versions
2460 of this document, or of portions of it,
2461 under the above conditions, provided also that they
2462 carry prominent notices stating who last changed them.
2465 version-control: never
projects / platform / upstream / glibc.git / blob