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, 15347, 15514,
13 15804, 15894, 16002, 16198, 16284, 16348, 16349, 16357, 16362, 16447,
14 16532, 16545, 16574, 16599, 16600, 16609, 16610, 16611, 16613, 16619,
15 16623, 16629, 16632, 16634, 16639, 16642, 16648, 16649, 16670, 16674,
16 16677, 16680, 16683, 16689, 16695, 16701, 16706, 16707, 16712, 16713,
17 16714, 16731, 16739, 16740, 16743, 16754, 16758, 16759, 16760, 16770,
18 16786, 16789, 16791, 16799, 16800, 16815, 16823, 16824, 16831, 16838,
19 16854, 16876, 16885, 16888, 16890, 16912, 16916.
21 * The minimum Linux kernel version that this version of the GNU C Library
22 can be used with is 2.6.32.
24 * Running the testsuite no longer terminates as soon as a test fails.
25 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
26 with PASS or FAIL lines for individual tests. A summary of the results is
27 printed, including a list of failing lists, and "make check" exits with
28 error status if there were any unexpected failures. "make check
29 stop-on-test-failure=y" may be used to keep the old behavior.
31 * The am33 port, which had not worked for several years, has been removed
34 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
35 supported; they now act the same as _DEFAULT_SOURCE (but generate a
36 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
37 conflicted with POSIX (support for which was removed in 2.19), the
38 interfaces those macros enabled remain available when compiling with
39 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
44 * The following bugs are resolved with this release:
46 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
47 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
48 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
49 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
50 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
51 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
52 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
53 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
54 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
55 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
56 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
57 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
58 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
59 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
60 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
61 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
62 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
63 16431, 16453, 16474, 16506, 16510, 16529
65 * Slovenian translations for glibc messages have been contributed by the
66 Translation Project's Slovenian team of translators.
68 * The public headers no longer use __unused nor __block. This change is to
69 support compiling programs that are derived from BSD sources and use
70 __unused internally, and to support compiling with Clang's -fblock
71 extension which uses __block.
73 * CVE-2012-4412 The strcoll implementation caches indices and rules for
74 large collation sequences to optimize multiple passes. This cache
75 computation may overflow for large collation sequences and may cause a
76 stack or buffer overflow. This is now fixed to use a slower algorithm
77 which does not use a cache if there is an integer overflow.
79 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
80 rules for large collation sequences to optimize multiple passes and falls
81 back to alloca if malloc fails, resulting in a possible stack overflow.
82 The implementation now falls back to an uncached collation sequence lookup
85 * CVE-2013-4788 The pointer guard used for pointer mangling was not
86 initialized for static applications resulting in the security feature
87 being disabled. The pointer guard is now correctly initialized to a
88 random value for static applications. Existing static applications need
89 to be recompiled to take advantage of the fix (bug 15754).
91 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
92 to the d_name member of struct dirent, or omit the terminating NUL
93 character. (Bugzilla #14699).
95 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
96 aligned_alloc functions could allocate too few bytes or corrupt the
97 heap when passed very large allocation size values (Bugzilla #15855,
100 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
101 for AF_INET6 has been fixed (Bugzilla #16072).
103 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
104 pap_CW, quz_PE, the_NP.
106 * Substantially revised locales: gd_GB, ht_HT
108 * The LC_ADDRESS field was updated to support country_car for almost all
111 * ISO 1427 definitions were updated.
113 * ISO 3166 definitions were updated.
115 * The localedef utility now supports --big-endian and --little-endian
116 command-line options to generate locales for a different system from that
117 for which the C library was built.
119 * Binary locale files now only depend on the endianness of the system for
120 which they are generated and not on other properties of that system. As a
121 consequence, binary files generated with new localedef may be incompatible
122 with old versions of the GNU C Library, and binary files generated with
123 old localedef may be incompatible with this version of the GNU C Library,
124 in the following circumstances:
126 + Locale files may be incompatible on m68k systems.
128 + Locale archive files (but not separate files for individual locales) may
129 be incompatible on systems where plain "char" is signed.
131 * The configure option --disable-versioning has been removed. Builds with
132 --disable-versioning had not worked for several years.
134 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
135 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
137 * SystemTap probes for malloc have been introduced.
139 * SystemTap probes for slow multiple precision fallback paths of
140 transcendental functions have been introduced.
142 * Support for powerpc64le has been added.
144 * The soft-float powerpc port now supports e500 processors.
146 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
148 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
149 set of header declarations that are enabled by default, even when other
150 feature test macros or compiler options such as -std=c99 would otherwise
151 disable some of those declarations.
153 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
154 conflict with POSIX. The libbsd-compat library (which was a dummy library
155 that did nothing) has also been removed.
157 * Preliminary documentation about Multi-Thread, Async-Signal and
158 Async-Cancel Safety has been added.
160 * Change of ABI data structures for s390 and s390x:
161 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
162 allow for future hardware extensions. All library functions that accept or
163 return these structures were versioned in order to provide backwards
164 compatibility with existing code. However, not all cases can be handled
165 with interface versioning. If an application embeds either structure into
166 another structure and that structure is passed to another compilation unit
167 which expects the newer larger-sized object then any access to the new
168 fields will result in undefined behaviour. Similarly any access to fields
169 that were moved by the enlarging of the structures will cause undefined
170 behaviour. To fix the undefined behaviour all objects that are part of the
171 final in-memory image must agree on the size of structures, and this may
172 require recompilation.
176 * The following bugs are resolved with this release:
178 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
179 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
180 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
181 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
182 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
183 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
184 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
185 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
186 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
187 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
188 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
189 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
190 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
193 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
194 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
195 Distributions can re-enable building and using pt_chown via the new configure
196 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
197 considerable security risks and should only be used if the distribution
198 understands and accepts the risks.
200 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
203 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
204 fixed (Bugzilla #15330).
206 * Add support for calling C++11 thread_local object destructors on thread
207 and program exit. This needs compiler support for offloading C++11
208 destructor calls to glibc.
210 * Improved worst case performance of libm functions with double inputs and
213 * Support for priority inherited mutexes in pthread condition variables on
214 non-x86 architectures.
216 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
218 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
220 * Optimized string functions for ARM. Implemented by Will Newton and
223 * Optimized libm functions for SPARC. Implemented by David S. Miller.
225 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
228 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
229 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
231 * Added a benchmark framework to track performance of functions in glibc.
233 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
234 It is based on draft TS 18661 and currently enabled as a GNU extension.
236 * On Linux, the clock function now uses the clock_gettime system call
237 for improved precision, rather than old times system call.
239 * Added support for version-3 tz format files. This is needed when using
240 the tz database release 2013e or later, and affects a few unusual cases --
241 currently only TZ='America/Godthab' for time stamps after 2037.
243 * Added new API functions pthread_getattr_default_np and
244 pthread_setattr_default_np to get and set the default pthread
245 attributes of a process.
247 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
248 This may improve lock scaling of existing programs on TSX capable systems.
249 When the --enable-lock-elision=yes parameter is specified at configure
250 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
253 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
254 availability). Implemented by Ryan S. Arnold.
256 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
260 * The following bugs are resolved with this release:
262 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
263 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
264 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
265 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
266 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
267 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
268 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
269 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
270 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
271 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
272 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
273 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
274 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
275 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
276 14879, 14889, 14893, 14898, 14914.
278 * Optimization of memcpy for MIPS.
280 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
281 EMFILE has been fixed (Bugzilla #14889).
283 * The add-on ports collection is now distributed in the "ports" subdirectory
284 of the main GNU C Library distribution, rather than separately.
286 * Port to ARM AArch64 contributed by Linaro.
288 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
289 Optimized versions of memcpy, memset, and memcmp added for System z10 and
291 Implemented by Andreas Krebbel.
293 * The new function secure_getenv allows secure access to the environment,
294 returning NULL if running in a SUID/SGID process. This function replaces
295 the internal function __secure_getenv.
297 * SystemTap static probes have been added into the dynamic linker.
298 Implemented by Gary Benson.
300 * Optimizations of string functions strstr, strcasestr and memmem.
301 Implemented by Maxim Kuvyrkov.
303 * The minimum Linux kernel version that this version of the GNU C Library
304 can be used with is 2.6.16.
306 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
307 powerpc POWER7. Implemented by Will Schmidt.
309 * New configure option --disable-nscd builds the C library such that it
310 never attempts to contact the Name Service Caching Daemon (nscd).
311 New configure option --disable-build-nscd avoids building nscd itself;
312 this is the default if --disable-nscd is used.
314 * Improved support for cross-compilation, including cross-testing and
315 bootstrap builds without a previously built glibc.
317 * Several testsuite tests are now able to test multiple IFUNC variants of an
318 interface, rather than just testing the one that would be chooen by
321 * New configure options --with-bugurl and --with-pkgversion, for
322 distributors to use to embed their bug-reporting and package version
323 information in --help and --version output.
325 * The ttyname and ttyname_r functions on Linux now fall back to searching for
326 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
327 allows creation of chroots without the procfs mounted on /proc.
329 * The `crypt' function now fails if passed salt bytes that violate the
330 specification for those values. On Linux, the `crypt' function will
331 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
332 enabled, and fail on encrypted strings using the MD5 or DES algorithm
333 when the mode is enabled.
335 * The `clock_*' suite of functions (declared in <time.h>) is now available
336 directly in the main C library. Previously it was necessary to link with
337 -lrt to use these functions. This change has the effect that a
338 single-threaded program that uses a function such as `clock_gettime' (and
339 is not linked with -lrt) will no longer implicitly load the pthreads
340 library at runtime and so will not suffer the overheads associated with
341 multi-thread support in other code such as the C++ runtime library.
343 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
348 * The following bugs are resolved with this release:
350 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
351 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
352 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
353 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
354 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
355 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
356 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
357 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
358 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
359 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
360 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
361 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
362 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
363 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
364 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
365 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
366 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
367 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
368 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
369 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
370 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
371 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
374 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
375 configuring glibc with:
376 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
377 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
378 Implemented by H.J. Lu.
382 + define static_assert
384 + do not declare gets
386 + declare at_quick_exit and quick_exit also for ISO C11
388 + aligned_alloc. NB: The code is deliberately allows the size parameter
389 to not be a multiple of the alignment. This is a moronic requirement
390 in the standard but it is only a requirement on the caller, not the
395 + uchar.h support added
397 + CMPLX, CMPLXF, CMPLXL added
399 Implemented by Ulrich Drepper.
401 * Support for the IA-64 has been moved to ports.
403 * Remove support for anything but ELF binary format
405 * Checking versions of poll, ppoll added.
406 Implemented by Ulrich Drepper.
408 * More generic and 64-bit performance optimizations to math functions.
409 Implemented by Ulrich Drepper.
411 * New configure option --enable-obsolete-rpc makes the deprecated RPC
412 headers and functions available at compile time as they were before
413 version 2.14. This option will be removed at some time in the future
414 after the TI-RPC library becomes fully sufficient for the needs of
415 existing applications.
417 * Compatibility code for Linux kernel versions before 2.4 has been removed.
418 Note that glibc is not expected to work with any Linux kernel version
421 * New header <sys/auxv.h> and function getauxval allowing easy access to
422 the AT_* key-value pairs passed from the Linux kernel. The header also
423 defines the HWCAP_* bits associated with the AT_HWCAP key.
425 * New locales: mag_IN
427 * New configure option --enable-systemtap builds SystemTap static probes
428 into libc for setjmp and longjmp and into libpthread for various operations.
429 So far the setjmp/longjmp probes and some of the libpthread probes are
430 provided only for i*86 and x86_64.
431 Implemented by Roland McGrath and Rayson Ho.
433 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
435 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
438 * More optimized functions for SPARC. Implemented by David S. Miller.
440 * Improved support for cross-compilation, especially bootstrap builds
441 without a previously built glibc.
443 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
444 Chris Metcalf from Tilera.
446 * Support for the old ARM ABI has been removed from ports. Only the EABI is
447 now supported for ARM processors.
449 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
450 as the name of the dynamic linker, to distinguish it from the
451 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
453 * Support for CRIS has been removed from ports.
455 * A new class of installed header has been documented for low-level
456 platform-specific functionality. PowerPC added the first instance with a
457 function to provide time base register access. Contributed by Tulio
458 Magno Quites Machado Filho.
460 * ix86 configurations now install header files that are consistent with
461 what x86-64 configurations install. These same header files can be used
462 for -m32, -m64, or -mx32 builds.
463 Contributed by H.J. Lu.
465 * Math library bug fixes. A thorough audit of all open math library bugs was
466 conducted by Joseph Myers. Significant progress was made on many math
467 library bugs resulting in more accurate exceptions and function results.
468 Many thanks to all those that contributed including Andreas Jaeger for his
469 patch review and work on the x87 trigonometric instruction issues.
471 * Timezone data is no longer installed. Timezone-related binaries and scripts
472 will continue to be installed. Users should obtain their timezone data from
473 their distribution provider or from the tzdata package at
474 <ftp://munnari.oz.au/pub/>.
478 * The following bugs are resolved with this release:
480 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
481 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
482 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
483 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
484 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
485 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
486 13484, 13506, 13515, 13523, 13524, 13538, 13540
488 * New program pldd to list loaded object of a process
489 Implemented by Ulrich Drepper.
491 * Add nss_db support back to glibc. No more dependency on Berkeley db
492 and support for initgroups lookups.
493 Implemented by Ulrich Drepper.
495 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
496 Contributed by HJ Lu.
498 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
499 Contributed by HJ Lu.
501 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
502 on x86-32 and x86-64.
503 Contributed by Liubov Dmitrieva.
505 * Optimized strchr and strrchr for SSE on x86-32.
506 Contributed by Liubov Dmitrieva.
508 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
509 for x86-64 and x86-32.
510 Contributed by Liubov Dmitrieva.
512 * New interfaces: scandirat, scandirat64
513 Implemented by Ulrich Drepper.
515 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
516 Implemented by Ulrich Drepper.
518 * nscd now also caches the netgroup database.
519 Implemented by Ulrich Drepper.
521 * Integrate libm with gcc's -ffinite-math-only option.
522 Implemented by Ulrich Drepper.
524 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
525 to math functions. Implemented by Ulrich Drepper.
527 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
528 Implemented by Ulrich Drepper.
530 * New Linux interfaces: process_vm_readv, process_vm_writev
532 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
533 Implemented by Ulrich Drepper.
535 * Optimized nearbyint and strcasecmp for PPC.
536 Implemented by Adhemerval Zanella.
538 * New locales: bho_IN, unm_US, es_CU, ta_LK
542 * The following bugs are resolved with this release:
544 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
545 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
546 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
547 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
548 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
549 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
550 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
551 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
552 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
553 12795, 12811, 12813, 12814, 12841
555 * The RPC implementation in libc is obsoleted. Old programs keep working
556 but new programs cannot be linked with the routines in libc anymore.
557 Programs in need of RPC functionality must be linked against TI-RPC.
558 The TI-RPC implementation is IPv6 enabled and there are other benefits.
560 Visible changes of this change include (obviously) the inability to link
561 programs using RPC functions without referencing the TI-RPC library and the
562 removal of the RPC headers from the glibc headers.
563 Implemented by Ulrich Drepper.
565 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
566 syncfs, setns, sendmmsg
568 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
569 yue_HK, lij_IT, mhr_RU
571 * New encodings: CP770, CP771, CP772, CP773, CP774
573 * New program sotruss to trace calls through PLTs
574 Implemented by Ulrich Drepper.
576 * The malloc hook implementation is marked deprecated and will be removed
577 from the default implementation in the next version. The design never
578 worked ever since the introduction of threads. Even programs which do
579 not create threads themselves can use multiple threads created internally.
583 * The following bugs are resolved with this release:
585 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
586 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
587 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
588 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
591 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
593 * POWER7 optimizations: memset, memcmp, strncmp
595 * New optimized string functions for x86-64: strnlen (SSE2),
596 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
597 Implemented by Ulrich Drepper.
601 * The following bugs are resolved with this release:
603 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
604 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
605 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
606 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
607 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
608 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
609 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
610 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
612 * New interfaces: pthread_getname_np, pthread_setname_np
614 * New Linux interface: recvmmsg
616 * STT_GNU_IFUNC implemented for Sparc by David Miller.
618 * The dynamic linker now recognizes supported ABI versions from the
619 EI_ABIVERSION field in the ELF header.
620 Implemented by Ulrich Drepper.
622 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
623 will not be used to fill in password fields in the passwd.byname replies.
624 Instead it is used to synthesize the shadow.byname table, should it be
625 missing. This is a useful mode in some installations involving Solaris.
626 Implemented by Ulrich Drepper.
628 * New locales: kok_IN, sq_MK, cv_RU
632 * The following bugs are resolved with this release:
634 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
635 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
636 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
637 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
638 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
639 10789, 10817, 10823, 10840, 10847
641 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
643 Implemented by Ulrich Drepper.
645 * Checking version of longjmp added that fails if an uninitialized stack
646 frame would be created. Implemented by Ulrich Drepper.
648 * STT_GNU_IFUNC is now supported in static executables.
649 Implemented by H.J. Lu.
651 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
653 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
654 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
655 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
656 Contributed by H.J. Lu.
658 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
659 Implemented by Ulrich Drepper.
661 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
663 Contributed by H.J. Lu.
665 * Support for fma instruction in AVX on x86-64.
666 Implemented by H.J. Lu and Ulrich Drepper.
668 * AVX support in x86-64 auditing support in ld.so.
669 Implemented by H.J. Lu.
671 * STB_GNU_UNIQUE support added.
672 Implemented by Ulrich Drepper.
674 * Implement second fallback mode for optimized DNS lookup for even more
675 broken environments. If two requests from the same port are not
676 handled correctly close the socket and open a new one before sending
677 the second request. The 'single-request-reopen' option in /etc/resolv.conf
678 can be used to select this mode right away, instead of rediscovering the
679 necessity is every process again.
680 Implemented by Ulrich Drepper.
682 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
683 Implemented by Adam Tkac.
685 * Optimized iconv conversions for S390x.
686 Implemented by Andreas Krebbel.
688 * Using condvars with PI mutexes is now more efficient due to kernel
689 support for requeueing to PI futexes. NPTL support added for x86-64.
690 Implemented by Ulrich Drepper.
692 * New locales: ps_AF, my_MM
696 * The following bugs are resolved with this release:
698 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
699 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
700 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
701 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
702 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
704 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
705 Implemented by Ulrich Drepper.
707 * New Linux interfaces: accept4, fallocate, fallocate64.
708 Implemented by Ulrich Drepper.
710 * Correct declarations of string function when used in C++ code. This
711 could lead to compile errors for invalid C++ code.
713 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
716 * New POSIX 2008 interface: psiginfo
717 Implemented by Ulrich Drepper.
719 * New ISO C++1x interfaces: quick_exit, at_quick_exit
720 Implemented by Ulrich Drepper.
722 * Support for selecting between multiple function definitions at runtime
723 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
725 * The libcrypt library can now use the hash function implementations in
726 NSS. Implemented by Ulrich Drepper.
728 * The malloc implementation can be compiled to be less memory efficient
729 but higher performing in multi-threaded programs.
730 Implemented by Ulrich Drepper.
732 * New locales: nan_TW@latin, ks_IN
734 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
735 Implemented by Ulrich Drepper.
737 * Extended printf hook support. It is possible to use user-defined types
738 and extend existing format specifiers.
739 Implemented by Ulrich Drepper.
741 * Handling for group shadow files has been added.
742 Implemented by Ulrich Drepper.
744 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
745 servers (the case, e.g., for some people using the built-in DNS
746 server in ADSL modems/routers). There is a once-per-process timeout
747 in case of a broken server. To avoid it, users can run nscd or put
748 'options single-request' in /etc/resolv.conf.
749 Implemented by Ulrich Drepper.
753 * The following bugs are resolved with this release:
755 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
756 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
757 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
758 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
759 6968, 6974, 6980, 6995, 7008, 7009, 7029
761 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
762 up at the same time. Implemented by Ulrich Drepper.
764 * TLS descriptors for LD and GD on x86 and x86-64.
765 Implemented by Alexandre Oliva.
767 * getaddrinfo now handles DCCP and UDPlite.
768 Implemented by Ulrich Drepper.
770 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
771 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
772 Implemented by Ulrich Drepper.
774 * New implementation of memmem, strstr, and strcasestr which is O(n).
775 Implemented by Eric Blake.
777 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
779 * Implement "e" option for popen to open file descriptor with the
780 close-on-exec flag set. Implemented by Ulrich Drepper.
782 * Implement "b" mode for fmemopen. In this mode writes writes don't
783 implicitly add a NUL byte and seeks from the end of the buffer really
784 use the buffer end, not the string length as the basis.
785 Implemented by Ulrich Drepper.
787 * Many functions, exported and internal, now atomically set the close-on-exec
788 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
790 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
792 Implemented by Pravin Satpute.
794 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
798 * The following bugs are resolved with this release:
800 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
801 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
802 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
803 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
804 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
805 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
806 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
808 * New locales: bo_CN, bo_IN, shs_CA.
810 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
812 * Sorting rules for some Indian languages (Devanagari and Gujarati).
813 Implemented by Pravin Satpute.
815 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
817 * nscd caches now all timeouts for DNS entries
818 Implemented by Ulrich Drepper.
820 * nscd is more efficient and wakes up less often.
821 Implemented by Ulrich Drepper.
823 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
824 vdprintf, and obstack_vprintf.
825 Implemented by Jakub Jelinek.
827 * Faster memset for x86-64.
828 Implemented by Harsha Jagasia and H.J. Lu.
830 * Faster memcpy on x86.
831 Implemented by Ulrich Drepper.
833 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
834 Implemented by Ulrich Drepper.
836 * Faster sqrt and sqrtf implemention for some PPC variants.
837 Implemented by Steven Munroe.
841 * The following bugs are resolved with this release:
843 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
844 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
845 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
846 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
847 5071, 5103, 5104, 5112, 5113, 5184, 5186
849 * More checking functions: fread, fread_unlocked, open*, mq_open.
850 Implemented by Jakub Jelinek and Ulrich Drepper.
852 * Extend fortification to C++. Implemented by Jakub Jelinek.
854 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
855 by not recognizing 'a' as a modifier when those specs are requested.
856 Implemented by Jakub Jelinek.
858 * PPC optimizations to math and string functions.
859 Implemented by Steven Munroe.
861 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
862 options to be passed. Implemented by Ulrich Drepper.
864 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
866 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
867 Implemented by Ulrich Drepper.
869 * Handle private futexes in the NPTL implementation.
870 Implemented by Jakub Jelinek and Ulrich Drepper.
872 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
873 Implemented by Roland McGrath and Ulrich Drepper.
875 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
877 * SHA-256 and SHA-512 based password encryption.
878 Implemented by Ulrich Drepper.
880 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
881 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
884 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
885 Implemented by Ulrich Drepper.
889 * The following bugs are resolved with this release:
891 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
892 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
893 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
894 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
895 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
896 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
897 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
900 * New Linux interfaces: epoll_pwait, sched_getcpu.
902 * New generic interfaces: strerror_l.
904 * nscd can now cache the services database. Implemented by Ulrich Drepper.
908 * The following bugs are resolved with this release:
910 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
911 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
912 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
913 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
914 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
915 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
916 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
917 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
918 3225, 3251, 3252, 3253, 3273
920 * For Linux, the sorting of addresses returned by getaddrinfo now also
921 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
922 Implemented by Ulrich Drepper.
924 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
925 Implemented by Ulrich Drepper.
927 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
929 * New iconv module for MIK. Contributed by Alexander Shopov.
931 * For sites with broken group and/or passwd database, the auto-propagate
932 option of nscd can prevent creating ID lookup entries from the results
933 of a name lookup and vice versa. This usually is no problem but some
934 site might have problems with the default behavior.
935 Implemented by Ulrich Drepper.
937 * Iterating over entire database in NIS can be slow. With the
938 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
939 to trade time for memory. The entire database will be read at once.
940 Implemented by Ulrich Drepper.
942 * The interfaces introduced in RFC 3542 have been implemented by
945 * Support for the new ELF hash table format was added by Ulrich Drepper.
947 * Support for priority inheritance mutexes added by Jakub Jelinek and
950 * Support for priority protected mutexes added by Jakub Jelinek.
952 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
953 or_IN, csb_PL, fy_NL, sr_ME.
957 * More overflow detection functions.
959 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
960 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
962 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
963 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
964 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
965 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
966 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
967 by Masahide Washizawa.
969 * It is now possible to install audit libraries for the dynamic linker using
970 LD_AUDIT. Implemented by Ulrich Drepper.
972 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
973 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
974 For a libc and libpthread that works well on Linux 2.4 kernels, we
975 recommend using the stable 2.3 branch.
977 * The new function open_wmemstream acts like open_memstream,
978 but uses a wchar_t wide character buffer.
980 * The new function ppoll is an improved version of poll, similar to pselect.
982 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
983 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
984 renameat, unlinkat, linkat, symlinkat, readlinkat.
986 * New Linux kernel system calls: unshare,
987 inotify_init, inotify_add_watch, inotify_rm_watch.
989 * The euidaccess function is now also known by the alias eaccess,
990 for compatibility with some other systems.
992 * Timezone data updated to 2006b version.
996 * The following bugs are resolved with this release:
998 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
999 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1000 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1001 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1002 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1003 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1005 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1007 * As of this release, GCC 4 can be used to compile the C Library.
1009 * Timezone data updated to 2005m version.
1013 * The following bugs are resolved with this release:
1015 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1016 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1017 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1018 777, 787, 821, 822, 823, 825
1020 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1024 * Support for RFC 3678. Real implementations exist only for Linux so far.
1025 Implemented by Ulrich Drepper.
1027 * nscd can now cache entries persistently. Expiring entries are reloaded.
1028 For speedups the cache can be shared in memory with client processes.
1029 Implemented by Ulrich Drepper.
1031 * nscd can now perform SELinux checks.
1032 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1034 * getaddrinfo queries are now cached. Canonical name lookup is performed
1036 Implemented by Ulrich Drepper.
1038 * The nothrow function attribute is used when headers are used by gcc when
1039 compiling C code. This can avoid significant amounts of exception
1042 * The malloc functions perform more error checking and are stricter when
1043 it comes to reacting on errors. The default action is to terminate
1044 the process after showing an error message. Implemented by Ulrich Drepper.
1046 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1047 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1049 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1050 namespaces using the new function dlmopen(). This feature is of course,
1051 like most other dynamic loading functionality, not available in statically
1052 linked applications. Implemented by Ulrich Drepper.
1054 * Low-overhead boundary checking variants of string and some stdio functions
1055 were added. These are to be used in conjunction with a gcc patch by
1056 Jakub Jelinek which adds calls to these functions if possible.
1057 Implemented by Jakub Jelinek and Ulrich Drepper.
1059 * Old code for several operating systems and machine architectures that
1060 have not been in working condition in a long time have been removed from
1061 the main source tree maintained by the GNU C Library's maintainers.
1062 These files are now reside in the separate `ports' source module
1063 that is usable as an add-on when building the library.
1067 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1068 interrogate the dynamic linker, compatible with the Solaris interface.
1070 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1071 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1073 * getifaddrs now uses the netlink interface on Linux to get its information.
1074 Implemented by Thorsten Kukuk.
1076 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1077 Implemented by Ulrich Drepper.
1079 * support for non-executable stacks on x86 has been added. Changes mostly
1082 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1085 * getaddrinfo now performs destination address selection according to
1090 * Thread-safe interfaces for many functions that access locale data
1091 were added in version 2.3, but these features were omitted from NEWS.
1092 Many functions have variants with an `_l' suffix that take a `locale_t'
1093 object as a parameter rather than consulting the current locale.
1094 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1095 create and maintain `locale_t' objects. Additionally, the new function
1096 `uselocale' sets "the current locale" (as used by functions not so
1097 parameterized) set for an individual thread. These features were added
1098 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1100 * The functions getresuid, getresgid, setresuid, and setresgid, which
1101 have long been available on Linux, are now declared in <unistd.h>
1102 and are now also available on the Hurd.
1104 * ELF thread-local storage support (TLS) now works on x86-64.
1106 * The new dynamic string token $LIB is expanded in shared library names.
1107 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1109 * Aldy Hernandez contributed complete software floating point support for
1110 PowerPC machines with no FPU.
1112 * fexecve is implemented on Linux.
1114 * The `btowc' function should work at least twice as fast due to
1115 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1117 * With approriate thread add-ons cancelable functions are now implemented
1118 in libc.so as well. No need to call the function in libpthread. This
1119 change allowed to finally disable the incorrect and expensive handling
1120 of weak definition in ld.so.
1122 * Yet more PLT entries in libc.so have been removed. We finally arrived
1123 at the bare minimum. Startup times improved appropriately.
1125 * Support for the new Linux/x86 system call interface was added. The
1126 AT_SYSINFO auxiliary vector entry is recognized and handled.
1130 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1133 * iconv (the program and the interface) now accepts empty names (excluding
1134 options like //TRANSLIT) to mean "use charset of current locale".
1136 * localedef can now transliterate characters in strings which are not in
1137 the provided charmap. The information from the input locale is used.
1139 * Prelinking support was added for ELF targets. This requires additional
1140 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1142 * Read-only stdio streams now use mmap to speed up operation by eliminating
1143 copying and buffer underflows. To use add 'm' to the mode string of
1144 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1146 * The malloc functions were completely rewritten by Wolfram Gloger based
1147 on Doug Lea's malloc-2.7.0.c.
1149 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1150 implementation of regex.
1152 * Bruno Haible upgraded the iconv and locale implementation to support
1155 * Contents of the LC_* and LANG environment variables in the CEN style are
1156 not recognized anymore. It never was used. Change by Ulrich Drepper.
1158 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1159 thread-local storage (TLS) ABI on some platforms.
1160 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1162 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1163 EUC-JISX0213, and TSCII.
1165 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1166 BSD-compatible interface for getting all network interface addresses.
1167 Implementation for IPv4 by Roland McGrath.
1169 * Loading of locale data is faster due to the introduction of a locale
1170 archive. Implemented by Roland McGrath and Ulrich Drepper.
1172 * Startup times are significantly reduced by not using exported functions
1173 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1176 * Steven Munroe contributed a port to PowerPC64/Linux.
1180 * The Hurd now uses the GNU libio implementation of stdio rather than the
1181 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1183 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1184 with the same behavior as the Linux system call of the same name.
1188 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1189 128-bit long double format.
1191 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1192 IBM1161, and IBM1162 charsets.
1194 * Andreas Jaeger contributed a port to x86-64/Linux.
1196 * Peter Bruin contributed a port to PowerPC/Hurd.
1198 * libc functions using I/O streams now can handle wide-oriented streams
1201 * optimizations in the dynamic linker. Binaries created by recent binutils
1202 versions start up quicker due to reduced time spent on relocations.
1204 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1208 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1209 asinh, atanh, j0 for the 128-bit long double format.
1211 * Bruno Haible updated all the code handling Unicode in some form to
1212 support Unicode 3.1.
1214 * Speed of regex for single-byte locales is back to previous levels.
1215 Patch by Isamu Hasegawa.
1217 * Alpha, SPARC, and IA-64 now also using floating stacks.
1219 * Startup time of internationalized applications greatly improved through
1220 iconv cache. Use iconvconfig to generate the cache file.
1221 Contributed by Ulrich Drepper.
1223 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1224 severe performance problems. Patch by David Mosberger.
1226 * The Hurd port got a lot more functionality like AIO, various stdio
1227 extensions, etc. Mainly done by Roland McGrath.
1229 * mtrace can now lookup symbols in shared libraries.
1233 * Intel's IA-64 math library is largely integrated. It provides fast and
1234 accurate implementatations for most basic and standard math functions
1235 in float, double, and long double format.
1237 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1238 and asin for the 96-bit long double format and asin, log, tan for the
1239 128-bit long double format.
1241 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1242 The basic double functions exist today. Contributed by Abraham Ziv
1243 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1244 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1246 * An asynchronous name lookup library was added. The interface is designed
1247 after POSIX AIO. The proposal was circulated beforehand to get comments.
1248 No negative ones came in. Implemented by Ulrich Drepper.
1250 * Port to S390/64bit contributed by Martin Schwidefsky
1251 <schwidefsky@de.ibm.com>.
1253 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1254 of functions for Linux/IA-64.
1256 * The RPC code is now thread safe. Threads can now use the same service
1257 of different services at the same time. Patch by Eric Norum
1258 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1260 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1261 family of functions for Linux/S390.
1263 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1264 of functions for Linux/x86.
1266 * Port to Linux/CRIS contributed by Axis Communications.
1270 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1271 we can now check for namespace violations and missing declarations. The
1272 result is that almost all headers are now Unix-compliant (as defined in
1273 the upcoming XPG6). The negative side is that some programs might need
1274 corrections, too, if they depend on the incorrect form of the headers in
1275 previous versions which defined too many symbols and included too many
1278 * regex now handles multibyte character sets correctly.
1279 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1281 * iconv (the program) does now conform to the upcoming XPG6 and handles
1282 charmaps. Instead of the charset names the path of charmaps can be
1283 provided and the conversion happens based on this data.
1284 Contributed by Ulrich Drepper.
1286 * The locale program now provides detailed information about the installed
1291 only lists the names of the supported locales
1295 provides details such as country, language, and codeset name.
1296 Contributed by Ulrich Drepper.
1300 * The gencat program now parses the input file according to the charset
1301 selected by the LC_CTYPE category. This is important for stateful
1302 character sets. To make generating catalogs easier there is a way
1303 to overwrite the charset selected by the locale: before the first
1304 message or $ quote line the catalog can contain a line like
1306 $ codeset=ISO-8859-2
1308 to select the charset (ISO-8859-2 in this case).
1310 Implemented by Shinya Hanataka and Ulrich Drepper.
1312 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1313 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1314 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1316 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1317 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1319 * The LANGUAGE environment variable is now ignored unless the locale is
1320 changed from the default "C" locale.
1322 * The usual bug fixes.
1326 * Greg McGary added runtime support for bounds checking using gcc's
1327 new -fbounded-pointers option. ix86 target is complete. PowerPC
1330 * Thorsten Kukuk added secure mode support to nscd.
1332 * The Berkeley db libraries have been removed.
1334 Related, the nss_db module is now in a separate package since it
1335 obviously requires a database library being available.
1337 * Wide character I/O streams implemented by Ulrich Drepper.
1339 * Functions from the extended socket API added by Ulrich Drepper.
1341 * Functions feenableexcept and fedisableexcept to control the
1342 behaviour of individual exceptions have been added by Andreas Jaeger.
1344 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1346 * The resolver code has been updated from bind 8.2.3-T5B which supports
1347 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1350 This change could in some situations effect backward compatibility. Since
1351 now `_res' is a thread-local instead of a global variable, modifying it
1352 in one thread does not have any effect in other threads.
1354 The resolver library was also extended to allow IPv6 as the transport
1355 protocol for the requests. This work was done by Stig Venaas.
1357 * Compatibility code for K&R C compilers has been removed from the
1358 header files. A ISO C compiler is needed to use the library
1359 (conforming to either C89 or C99 standard).
1361 * Complete rewrite of the localedef program to support multibyte character
1362 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1363 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1364 Implemented by Ulrich Drepper.
1366 Bruno Haible significantly improved the generation and use of the data
1367 structures for the wide character tables.
1369 * Plural handling in gettext implemented by Ulrich Drepper.
1371 * The utmp daemon has been removed.
1373 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1375 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1378 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1380 * POSIX barriers implemented by Kaz Kylheku.
1382 * POSIX spawn function family implemented by Ulrich Drepper.
1384 * POSIX spinlocks are now available.
1386 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1388 * the configure option --enable-kernel=X.Y.Z allows to strip out
1389 compatibility for kernel versions before X.Y.Z. This is currently only
1390 implemented for Linux.
1392 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1393 field sin6_scope_id. This means that all programs using IPv6 should be
1394 recompiled. Don't expect binary compatibility with previous glibc
1397 * various conversion modules for IBM character sets contributed by
1400 * IA-64 port by Jes Sorensen and HJ Lu.
1414 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1416 * New xdr functions are added; some rpc functions are now 64bit clean.
1418 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1420 * Fixed known incompatibilities with glibc 2.0.
1422 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1424 * Optimized a number of functions (especially the ELF dynamic loader).
1426 * Update timezone data files.
1428 * lots of charmaps corrections
1430 * some new locale definitions and charmaps
1435 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1436 conform to POSIX member type requirements. Symbol versions have been
1437 adjusted as needed within the library, and for direct use by applications,
1438 but there is potential for problems if third-party libraries use
1439 struct timeval as part of their interface. This does not present
1440 a problem for X and other "essential" system libraries.
1442 * An additional locale model to support C++ Standard Library locale
1443 model and probably more was implemented by Ulrich Drepper.
1445 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1448 * Miles Bader provided the `argp' function family to support hierachical
1449 command line argument parsing, layered on top of getopt.
1451 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1453 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1456 * scanf recognizes the %a and %A format for scanning floating point numbers.
1458 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1459 information and interfaces for the available integer types.
1461 * about 130 new math functions were added to implement the ISO C9x math
1464 * the new header <complex.h> contains definitions of the complex math
1465 functions from ISO C 9X.
1467 * the new header <tgmath.h> defines generic macros to use complex or
1468 real valued functions.
1470 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1472 * Andreas Jaeger provided a test suite for the math library.
1474 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1476 * Ulrich Drepper added character set conversion functions (iconv).
1478 * Optimized string functions have been added.
1480 * The localedata addon is now part of glibc.
1482 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1484 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1485 daemon for NSS (nscd).
1487 Missing a better place here are some numbers on improvements. Under
1488 Linux 2.1.125 un-tar-ing the kernel sources takes
1492 using local files 12.19s 6.88s 22.91s
1494 using NIS 13.92s 8.91s 26.34s
1496 using NIS & nscd 10.37s 7.34s 25.30s
1498 using NIS+ 27.57s 30.37s 640.46s
1500 using NIS+ & nscd 10.25s 7.83s 26.51s
1502 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1504 Keep in mind that non-namelookup related operations dominate above times.
1505 It was just a common complain that using NIS+ unpacking the kernel is
1508 [1] The old nscd implementation is not available anymore since it was
1509 distributed with glibc up to version 2.0.98 and thus is now replaced.
1511 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1513 * Mark Kettenis provided a Hesiod NSS module.
1515 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1516 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1518 * rcmd can now handle netgroups (Dick Streefland).
1520 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1523 * Support for the IPv6 protocol has been added to the socket API, as per the
1524 latest draft standards.
1526 * Support for Linux 2.2 has been added.
1528 * Interface changes relative to the latest 2.0.x release:
1529 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1530 addseverity NEW: Unix98
1531 alphasort64 NEW: LFS
1532 argp_err_exit_status NEW: argp, GNU ext
1533 argp_error NEW: argp, GNU ext
1534 argp_failure NEW: argp, GNU ext
1535 argp_help NEW: argp, GNU ext
1536 argp_parse NEW: argp, GNU ext
1537 argp_program_bug_address NEW: argp, GNU ext
1538 argp_program_version NEW: argp, GNU ext
1539 argp_program_version_hook NEW: argp, GNU ext
1540 argp_state_help NEW: argp, GNU ext
1541 argp_usage NEW: argp, GNU ext
1542 authdes_create NEW: Secure RPC
1543 authdes_getucred NEW: Secure RPC
1544 authdes_pk_create NEW: Secure RPC
1545 backtrace NEW: GNU ext.
1546 backtrace_symbols NEW: GNU ext.
1547 backtrace_symbols_fd NEW: GNU ext.
1549 cacosf NEW: ISO C 9x
1550 cacosh NEW: ISO C 9x
1551 cacoshf NEW: ISO C 9x
1552 cacoshl NEW: ISO C 9x
1553 cacosl NEW: ISO C 9x
1560 casinf NEW: ISO C 9x
1561 casinh NEW: ISO C 9x
1562 casinhf NEW: ISO C 9x
1563 casinhl NEW: ISO C 9x
1564 casinl NEW: ISO C 9x
1566 catanf NEW: ISO C 9x
1567 catanh NEW: ISO C 9x
1568 catanhf NEW: ISO C 9x
1569 catanhl NEW: ISO C 9x
1570 catanl NEW: ISO C 9x
1571 cbc_crypt NEW: Secure RPC
1575 ccoshf NEW: ISO C 9x
1576 ccoshl NEW: ISO C 9x
1582 cimagf NEW: ISO C 9x
1583 cimagl NEW: ISO C 9x
1584 clearerr_locked REMOVED
1585 clntunix_create NEW: sunrpc ext
1587 clog10 NEW: ISO C 9x
1588 clog10f NEW: ISO C 9x
1589 clog10l NEW: ISO C 9x
1599 cprojf NEW: ISO C 9x
1600 cprojl NEW: ISO C 9x
1602 crealf NEW: ISO C 9x
1603 creall NEW: ISO C 9x
1608 csinhf NEW: ISO C 9x
1609 csinhl NEW: ISO C 9x
1612 csqrtf NEW: ISO C 9x
1613 csqrtl NEW: ISO C 9x
1617 ctanhf NEW: ISO C 9x
1618 ctanhl NEW: ISO C 9x
1620 des_setparity NEW: Secure RPC
1621 ecb_crypt NEW: Secure RPC
1622 endutxent NEW: Unix98
1624 exp10f NEW: ISO C 9x
1625 exp10l NEW: ISO C 9x
1629 fattach NEW: STREAMS
1630 fdetach NEW: STREAMS
1634 feclearexcept NEW: ISO C 9x
1635 fegetenv NEW: ISO C 9x
1636 fegetexceptflag NEW: ISO C 9x
1637 fegetround NEW: ISO C 9x
1638 feholdexcept NEW: ISO C 9x
1640 feraiseexcept NEW: ISO C 9x
1641 ferror_locked REMOVED
1642 fesetenv NEW: ISO C 9x
1643 fesetexceptflag NEW: ISO C 9x
1644 fesetround NEW: ISO C 9x
1645 fetestexcept NEW: ISO C 9x
1646 feupdateenv NEW: ISO C 9x
1647 fflush_locked REMOVED
1651 fgets_unlocked NEW: GNU ext.
1652 fileno_locked REMOVED
1664 fputc_locked REMOVED
1665 fputs_unlocked NEW: GNU ext.
1666 fread_unlocked NEW: GNU ext.
1671 fstatvfs NEW: Unix98
1675 ftruncate64 NEW: LFS
1677 fwrite_unlocked NEW: GNU ext.
1678 gai_strerror NEW: IPv6
1682 getchar_locked REMOVED
1684 getdate_err NEW: Unix98
1685 getdate_r NEW: GNU ext.
1687 getnameinfo NEW: IPv6
1688 getnetname NEW: Secure RPC
1689 getpmsg NEW: STREAMS
1690 getpt NEW: Unix98 PTY
1691 getrlimit64 NEW: LFS
1692 getutxent NEW: Unix98
1693 getutxid NEW: Unix98
1694 getutxline NEW: Unix98
1695 glob64 NEW: GNU ext.
1696 globfree64 NEW: GNU ext.
1697 gnu_get_libc_release NEW: GNU ext.
1698 gnu_get_libc_version NEW: GNU ext.
1699 grantpt NEW: Unix98 PTY
1700 host2netname NEW: Secure RPC
1702 iconv_close NEW: iconv
1703 iconv_open NEW: iconv
1704 if_freenameindex NEW: IPv6
1705 if_indextoname NEW: IPv6
1706 if_nameindex NEW: IPv6
1707 if_nametoindex NEW: IPv6
1708 in6addr_any NEW: IPv6
1709 in6addr_loopback NEW: IPv6
1710 inet6_isipv4mapped NEW: IPv6
1711 isastream NEW: STREAMS
1712 iswblank NEW: GNU ext.
1713 key_decryptsession NEW: Secure RPC
1714 key_decryptsession_pk NEW: Secure RPC
1715 key_encryptsession NEW: Secure RPC
1716 key_encryptsession_pk NEW: Secure RPC
1717 key_gendes NEW: Secure RPC
1718 key_get_conv NEW: Secure RPC
1719 key_secretkey_is_set NEW: Secure RPC
1720 key_setnet NEW: Secure RPC
1721 key_setsecret NEW: Secure RPC
1722 llrint NEW: ISO C 9x
1723 llrintf NEW: ISO C 9x
1724 llrintl NEW: ISO C 9x
1725 llround NEW: ISO C 9x
1726 llroundf NEW: ISO C 9x
1727 llroundl NEW: ISO C 9x
1732 lrintf NEW: ISO C 9x
1733 lrintl NEW: ISO C 9x
1734 lround NEW: ISO C 9x
1735 lroundf NEW: ISO C 9x
1736 lroundl NEW: ISO C 9x
1738 makecontext NEW: Unix98
1739 mempcpy NEW: GNU ext.
1742 modify_ldt NEW: kernel
1746 nearbyint NEW: ISO C 9x
1747 nearbyintf NEW: ISO C 9x
1748 nearbyintl NEW: ISO C 9x
1749 netname2host NEW: Secure RPC
1750 netname2user NEW: Secure RPC
1751 nexttoward NEW: ISO C 9x
1752 nexttowardf NEW: ISO C 9x
1753 nexttowardl NEW: ISO C 9x
1757 passwd2des NEW: Secure RPC
1759 pow10f NEW: GNU ext.
1760 pow10l NEW: GNU ext.
1763 printf_size NEW: GNU ext.
1764 printf_size_info NEW: GNU ext.
1765 profil_counter REMOVED
1766 pthread_mutexattr_getkind_np REPLACED
1767 pthread_mutexattr_setkind_np REPLACED
1768 ptsname NEW: Unix98 PTY
1769 ptsname_r NEW: Unix98 PTY
1771 putchar_locked REMOVED
1772 putgrent NEW: GNU ext.
1774 putpmsg NEW: STREAMS
1775 pututxline NEW: Unix98
1779 readdir64_r NEW: LFS
1780 remquo NEW: ISO C 9x
1781 remquof NEW: ISO C 9x
1782 remquol NEW: ISO C 9x
1784 roundf NEW: ISO C 9x
1785 roundl NEW: ISO C 9x
1787 scalbln NEW: ISO C 9x
1788 scalblnf NEW: ISO C 9x
1789 scalblnl NEW: ISO C 9x
1791 sendfile NEW: kernel
1792 setcontext NEW: Unix98
1793 setrlimit64 NEW: LFS
1794 setutxent NEW: Unix98
1796 sigignore NEW: Unix98
1797 sigqueue NEW: POSIX.1b
1798 sigrelse NEW: Unix98
1799 sigset NEW: POSIX.1b
1800 sigtimedwait NEW: POSIX.1b
1801 sigwaitinfo NEW: POSIX.1b
1802 sincos NEW: GNU ext.
1803 sincosf NEW: GNU ext.
1804 sincosl NEW: GNU ext.
1808 strcasestr NEW: GNU ext.
1809 strtoimax NEW: ISO C 9x
1810 strtoumax NEW: ISO C 9x
1811 strverscmp NEW: GNU ext.
1812 svcauthdes_stats NEW: Secure RPC
1813 svcunix_create NEW: sunrpc etx
1814 svcunixfd_create NEW: sunrpc ext
1815 swapcontext NEW: Unix98
1816 tcgetsid NEW: Unix98 PTY
1817 tdestroy NEW: GNU ext.
1818 tgamma NEW: ISO C 9x
1819 tgammaf NEW: ISO C 9x
1820 tgammal NEW: ISO C 9x
1824 truncf NEW: ISO C 9x
1825 truncl NEW: ISO C 9x
1827 unlockpt NEW: Unix98 PTY
1828 updwtmpx NEW: Unix98
1829 user2netname NEW: Secure RPC
1830 utmpxname NEW: Unix98
1831 versionsort NEW: GNU ext.
1832 versionsort64 NEW: GNU ext.
1834 wcscasecmp NEW: GNU ext.
1835 wcsncasecmp NEW: GNU ext.
1836 wcsnlen NEW: GNU ext.
1837 wcstoimax NEW: ISO C 9x
1838 wcstoll NEW: ISO C 9x
1839 wcstoull NEW: ISO C 9x
1840 wcstoumax NEW: ISO C 9x
1842 wordexp NEW: POSIX.2
1843 wordfree NEW: POSIX.2
1844 write_profiling REMOVED
1845 xdecrypt NEW: Secure RPC
1846 xdr_authdes_cred NEW: Secure RPC
1847 xdr_authdes_verf NEW: Secure RPC
1848 xdr_cryptkeyarg NEW: Secure RPC
1849 xdr_cryptkeyarg2 NEW: Secure RPC
1850 xdr_cryptkeyres NEW: Secure RPC
1851 xdr_getcredres NEW: Secure RPC
1852 xdr_key_netstarg NEW: Secure RPC
1853 xdr_key_netstres NEW: Secure RPC
1854 xdr_keybuf NEW: Secure RPC
1855 xdr_keystatus NEW: Secure RPC
1856 xdr_netnamestr NEW: Secure RPC
1857 xdr_sizeof NEW: Secure RPC
1858 xdr_unixcred NEW: sunrpc ext
1859 xencrypt NEW: Secure RPC
1860 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1871 * inet_ntoa is thread-safe
1873 * updwtmp is moved from libutil to libc
1875 * rewrite of cbrt function
1877 * update of timezone data
1891 * add atoll function
1893 * fix complex problems in Berkeley DB code
1895 * fix math functions
1899 * fixed lots of header problems (especially Linux/GNU specific)
1901 * dynamic loader preserves all registers
1903 * Roland McGrath provided support for handling of auxiliary objects in
1904 the ELF dynamic loader.
1906 * support for parallel builds is improved
1910 * GNU extensions are no longer declared by default. To enable them you
1911 must define the macro `_GNU_SOURCE' in your program or compile with
1914 * The library has changed from using GNU ld symbol aliases to using weak
1915 symbols where available. The ELF object file format supports weak
1916 symbols; GNU ld also supports weak symbols in the a.out format. (There
1917 is also now support for other GNU ld extensions in ELF. Use the
1918 `--with-elf' option to configure to indicate you have ELF, and
1919 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1920 of many files which contained only symbol aliases, reducing the size of
1921 the source and the compiled library; many other files were renamed to
1922 less cryptic names previously occupied by the symbol alias files.
1923 There is a new header file <elf.h> for programs which operate on
1924 files in the ELF format.
1926 * Converted to Autoconf version 2, so `configure' has more options.
1927 Run `configure --help' to see the details.
1929 * The library can now be configured to build profiling, highly-optimized
1930 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1931 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1932 `configure' enable building these extra libraries. The shared library is
1933 built by default when using both ELF and GNU ld. When shared libraries
1934 are enabled, the new library `-ldl' is available for arbitrary run-time
1935 loading of shared objects; its interface is defined in <dlfcn.h>. The
1936 new header file <link.h> gives access to the internals of the run-time
1937 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1938 application of same name on other systems and it provides information
1939 about dynamically linked binaries.
1941 * The C library now provides the run-time support code for profiling
1942 executables compiled with `-pg'. Programs can control the profiling code
1943 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1944 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1945 the support for this file format was contributed by David Mosberger-Tang.
1947 * The math code has been replaced with a math library based on fdlibm from
1948 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1949 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1950 functions. The math functions now reside in a separate library, so
1951 programs using them will need to use `-lm' their linking commands.
1953 * John C. Bowman contributed optimized ix87 assembler inline functions.
1955 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1956 mechanism similar to that found in Solaris 2. This is now used for the
1957 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1958 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1959 file controls what services are used for each individual database. This
1960 works by loading shared libraries with names specified in `nsswitch.conf',
1961 so service modules can be changed or added at any time without even
1962 relinking any program. Currently there are the file, db, and NIS based
1963 NSS services available.
1965 * The new functions `strtoq' and `strtouq' parse integer values from
1966 strings, like `strtol' and `strtoul', but they return `long long int' and
1967 `unsigned long long int' values, respectively (64-bit quantities).
1969 * The new functions `strtof' and `strtold' parse floating-point values from
1970 strings, like `strtod', but they return `float' and `long double' values,
1971 respectively (on some machines `double' and `long double' are the same).
1973 * Ulrich Drepper has contributed new implementations of the floating-point
1974 printing and reading code used in the `printf' family of functions and
1975 `strtod', `strtof', and `strtold'. These new functions are perfectly
1976 accurate, and much faster than the old ones.
1978 * The implementation of the POSIX locale model was completely rewritten by
1979 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1980 to compile the POSIX locale definition.
1982 * The former dummy implementations of the strcoll and strxfrm function are
1983 now replaced by fully functional code contributed by Ulrich Drepper. The
1984 collation information comes from the POSIX locale definitions.
1986 * The new header <langinfo.h> defines an interface for accessing
1987 various locale-dependent data (using the locale chosen with `setlocale').
1989 * Ulrich Drepper has contributed a new suite of functions for operation on
1990 wide-character and multibyte-character strings, in <wchar.h>;
1991 and classification and case conversion of wide characters, in <wctype.h>.
1992 These new functions are conforming to the ISO C, Amendement 1 specification.
1994 * There is now a second implementation of the standard I/O library available.
1995 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1996 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1998 * You can now use positional parameter specifications in format strings
1999 for the `printf' and `scanf' families of functions. For example,
2000 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2001 ``Number 6, Mr Jones''. This is mainly useful when providing different
2002 format strings for different languages, whose grammars may dictate
2003 different orderings of the values being printed. To support this
2004 feature, the interface for `register_printf_handler' has changed; see
2005 the header file <printf.h> for details.
2007 * The `printf' and `scanf' families of functions now understand a new
2008 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2009 to group numbers as indicated by the locale; for `scanf' and friends, this
2010 says to accept as valid only a number with all the proper grouping
2011 separators in the right places. In the default "C" locale, numbers are
2012 not grouped; but locales for specific countries will define the usual
2013 conventions (i.e. separate thousands with `,' in the US locale).
2015 * The pgrp functions have been regularized, slightly incompatibly but much
2016 less confusingly. The core functions are now `getpgid' and `setpgid',
2017 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2018 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2019 provided for compatibility. There is no longer an incompatible `getpgrp'
2020 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2022 * The new header file <fts.h> and suite of functions simplify programs that
2023 operate on directory trees. This code comes from 4.4 BSD.
2025 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2026 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2027 NSS scheme used in glibc.
2029 * There is a new malloc debugging hook `__memalign_hook'.
2031 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2032 `unsigned int' in <sys/types.h>. These are for compatibility only and
2033 their use is discouraged.
2035 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2036 done differently, so that it works even without GNU ld.
2038 * New function `euidaccess' checks allowed access to a file like `access',
2039 but using the effective IDs instead of the real IDs.
2041 * The time zone data files have been updated for the latest and greatest
2042 local time conventions of the countries of the world.
2044 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2047 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2048 for formatting floating-point numbers. They are provided only for
2049 compatibility; new programs should use `sprintf' instead. There are
2050 also equivalent function for the `long double' floating-point type and
2051 all functions also exist in a reentrant form.
2053 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2054 functions for maintaining the login-record files (primarily of use to
2055 system programs such as `login'), and convenient functions for
2056 allocating and initializing a pseudo-terminal (pty) device.
2058 * Ulrich Drepper has contributed new support for System V style
2059 shared memory and IPC on systems that support it.
2061 * Ulrich Drepper has contributed several miscellaneous new functions found
2062 in System V: The `hsearch' family of functions provide an effective
2063 implementation of hash tables; `a64l' and `l64a' provide a very simple
2064 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2067 * Ulrich Drepper has contributed new reentrant counterparts for the
2068 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2070 * Ulrich Drepper has contributed new, highly-optimized versions of several
2071 string functions for the i486/Pentium family of processors.
2073 * Ulrich Drepper has updated the Linux-specific code, based largely
2074 on work done in Hongjiu Lu's version of GNU libc for Linux.
2075 The GNU library now supports Linux versions 2.0.10 and later,
2076 using the ELF object file format (i[3456]86-*-linux).
2078 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2080 * David Mosberger-Tang and Richard Henderson have ported the C library
2081 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2082 dynamic linking support for ELF/Alpha.
2084 * Richard Henderson contributed several Alpha optimized assembler function
2085 for arithmetic and string handling.
2087 * Ulrich Drepper has contributed a new set of message catalog functions to
2088 support multiple languages using the <libintl.h> interface, for use with
2089 his new package GNU gettext. Translation volunteers have contributed
2090 catalogs of the library's messages in Spanish, German, and Korean.
2092 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2093 program and the `catgets' function for reading the catalog files it
2094 creates. (The <libintl.h> interface is preferred; we include the
2095 <nl_types.h> interface using `catgets' only for source compatibility with
2096 programs already written to use it.)
2098 * New header file <values.h> gives SVID-compatible names for <limits.h>
2101 * Various new macros, declarations, and small header files for compatibility
2104 * New function `group_member' is a convenient way to check if a process has
2105 a given effective group ID.
2107 * When using GCC 2.7 and later, the socket functions are now declared in a
2108 special way so that passing an argument of type `struct sockaddr_in *',
2109 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2110 `struct sockaddr *' type, does not generate a type-clash warning.
2112 * New function `error' declared in header file <error.h> is a convenient
2113 function for printing error messages and optionally exiting; this is the
2114 canonical function used in GNU programs. The new functions `err', `warn',
2115 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2116 doing the same thing.
2118 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2119 POSIX.2 `glob' function to do ~ and {...} expansion.
2121 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2122 `clearenv' which is used in POSIX.9 is also available.
2124 * New function `getsid' returns session ID number on systems that support it.
2126 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2127 files <db.h> and <mpool.h> provide a rich set of functions for several
2128 types of simple databases stored in memory and in files, and <ndbm.h> is
2129 an old `ndbm'-compatible interface using the `db' functions. Link with
2130 `-ldb' to get these functions.
2132 * New macro `strdupa' copies a string like `strdup', but uses local stack
2133 space from `alloca' instead of dynamic heap space from `malloc'.
2135 * New function `strnlen' is like `strlen' but searches only a given maximum
2136 number of characters for the null terminator. `stpncpy', `strndup' and
2137 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2140 * New function `statfs' in header <sys/statfs.h>.
2142 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2143 provide convenient functions for operating on blocks of null-terminated
2146 * A new suite of functions in <utmp.h> handle all the details of reading
2147 and writing the utmp file.
2149 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2152 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2153 completely POSIX compliant and also implemented the extended functionality
2154 to handle alternate digit representation and alternate era date formats.
2156 * Ulrich Drepper provided an implementation of the `strptime' function
2157 defined in XPG4.2 which transforms a string into a `struct tm' value.
2159 * Paul Eggert provided the tzselect shell script as part of the timezone
2160 code. The shell script makes it easy to select the correct timezone
2163 * The implementation of the malloc family of functions is completely replaced
2164 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2165 The implementation uses the mmap function (if available) and it is
2166 optimized for the use in multi threaded programs.
2168 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2169 functions. This new functionality is usable by specifying a special
2170 salt string and it is compatible with implementation on *BSD systems.
2172 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2173 `getsubopt' to handle second level command line options, `bsd_signal'
2174 to access BSD style `signal' functionality, the obsolete `regexp' style
2177 * the `lchown' function is available on system which support this
2180 * The implementation of the shadow password handling function was contributed
2183 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2185 * POSIX.1g support was added. The <sys/select.h> header is available,
2186 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2187 implementation of `getaddrinfo'.
2191 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2193 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2194 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2196 * The new function `daemon' from 4.4 BSD is useful for server programs that
2197 want to put themselves in the background.
2199 * Joel Sherrill has contributed support for several standalone boards that
2200 run without an operating system.
2202 * `printf', `scanf' and friends now accept a `q' type modifier for long
2203 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2205 * All of the code taken from BSD (notably most of the math and networking
2206 routines) has been updated from the BSD 4.4-Lite release.
2208 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2210 * The new functions `getdomainname' and `setdomainname' fetch or change the
2211 YP/NIS domain name. These are system calls which exist on systems which
2214 * The time zone data files have been updated for the latest international
2217 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2218 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2222 * The C library now includes support for Sun RPC, from Sun's free
2223 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2224 are included. (There is still no support for YP.)
2226 * Tom Quinn has contributed a port of the C library to SGI machines running
2227 Irix 4 (mips-sgi-irix4).
2229 * The new `lockf' function is a simplified interface to the locking
2230 facilities of `fcntl', included for compatibility.
2232 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2234 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2236 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2239 * The error message printed by `assert' for a failed assertion now includes
2240 the name of the program (if using GNU ld) and the name of the calling
2241 function (with versions of GCC that support this).
2243 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2245 * The library now includes the <sys/mman.h> header file and memory
2246 management functions `mmap', `munmap', `mprotect', `msync', and
2247 `madvise', on systems that support those facilities.
2249 * The interface for `mcheck' has changed slightly: the function called to
2250 abort the program when an allocation inconsistency is detected now takes
2251 an argument that indicates the type of failure. The new function
2252 `mprobe' lets you request a consistency check for a particular block at
2253 any time (checks are normally done only when you call `free' or `realloc'
2256 * It is now possible to easily cross-compile the C library, building on one
2257 system a library to run on another machine and/or operating system. All
2258 you need to do is set the variable `HOST_CC' in `configparms' to the
2259 native compiler for programs to run on the machine you are building on (a
2260 few generator programs are used on Unix systems); set `CC' to the
2263 * The new function `fexecve' (only implemented on the GNU system) executes
2264 a program file given a file descriptor already open on the file.
2268 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2269 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2271 * You can set the variable `libprefix' in `configparms' to specify a prefix
2272 to be prepended to installed library files; this makes it easy to install
2273 the GNU C library to be linked as `-lgnuc' or whatever.
2275 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2276 copies a limited number of characters from a string, and returns the
2277 address of the last character written.
2279 * You no longer need to check for whether the installed `stddef.h' is
2280 compatible with the GNU C library. configure now checks for you.
2282 * You can now define a per-stream `fileno' function to convert the
2283 stream's cookie into an integral file descriptor.
2285 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2286 allocates zero bytes of storage, and returns a unique pointer which
2287 you can pass to `realloc' or `free'. The behavior is undefined if
2288 you dereference this pointer.
2290 * The C library now runs on Sony NEWS m68k machines running either
2291 NewsOS 3 or NewsOS 4.
2293 * The new `syscall' function is a system-dependent primitive function
2294 for invoking system calls. It has the canonical behavior on Unix
2295 systems, including unreliable return values for some calls (such as
2296 `pipe', `fork' and `getppid').
2298 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2299 to `EAGAIN', which is the preferred name. On systems whose kernels
2300 use two distinct codes, the C library now translates EWOULDBLOCK to
2301 EAGAIN in every system call function.
2305 * The GNU C Library Reference Manual is now distributed with the library.
2306 `make dvi' will produce a DVI file of the printed manual.
2307 `make info' will produce Info files that you can read on line using C-h i
2308 in Emacs or the `info' program.
2309 Please send comments on the manual to bug-glibc-manual@gnu.org.
2311 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2313 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2315 * Jason Merrill has contributed a port to the Sequent Symmetry running
2316 Dynix version 3 (i386-sequent-dynix).
2318 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2319 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2321 * New function `memory_warnings' lets you arrange to get warnings when
2322 malloc is running out of memory to allocate, like Emacs gives you.
2324 * The C library now contains the relocating allocator used in Emacs 19 for
2325 its editing buffers. This allocator (ralloc) minimizes allocation
2326 overhead and fragmentation by moving allocated regions around whenever it
2327 needs to. You always refer to a ralloc'd region with a "handle" (a
2328 pointer to a pointer--an object of type `void **').
2330 * There is a new `printf' format: `%m' gives you the string corresponding
2331 to the error code in `errno'.
2333 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2334 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2335 pass, the `a' modifier says to fill in a `char **' you pass with a
2338 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2339 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2340 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2342 * `mkstemp' is a traditional Unix function to atomically create and open a
2343 uniquely-named temporary file.
2347 * The standard location for the file that says what the local timezone is
2348 has changed again. It is now `/usr/local/etc/localtime' (or more
2349 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2351 * The distribution no longer contains any files with names longer than 14
2354 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2355 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2357 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2361 * The configuration process has changed quite a bit. The `configure'
2362 script is now used just like the configuration scripts for other GNU
2363 packages. The `sysdeps' directory hierarchy is much rearranged.
2364 The file `INSTALL' explains the new scheme in detail.
2366 * The header files no longer need to be processed into ANSI C and
2367 traditional C versions. There is just one set of files to install, and
2368 it will work with ANSI or old C compilers (including `gcc -traditional').
2370 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2371 MIPS DECStation running Ultrix 4.
2373 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2374 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2375 made itself into a shared library.
2377 * Yet further improved support for the i386, running 4.3 BSD-like systems
2378 (such as Mach 3 with the Unix single-server), or System V.
2380 * New function `strncasecmp' to do case-insensitive string comparison
2381 with limited length.
2383 * New function `strsep' is a reentrant alternative to `strtok'.
2385 * New functions `scandir' and `alphasort' for searching directories.
2387 * New function `setenv' is a better interface to `putenv'.
2389 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2390 function for traversing a directory tree.
2392 * The GNU obstack package is now also part of the C library.
2393 The new function `open_obstack_stream' creates a stdio stream that
2394 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2395 formatted output directly to an obstack.
2397 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2398 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2400 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2402 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2403 things to your strings.
2405 * There are some new test programs: test-fseek, testmb, and testrand.
2407 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2408 These ports are not finished, but are a good starting place for really
2409 supporting those systems.
2411 * `/etc/localtime' is now the standard location for the file that says what
2412 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2413 This follows the general principle that `/etc' is the place for all local
2414 configuration files.
2416 * The C library header files now use `extern "C"' when used by the C++
2417 compiler, so the C library should now work with C++ code.
2419 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2420 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2423 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2424 function which uses the `merge sort' algorithm, and is said to be
2425 significantly faster than the old GNU `qsort' function. Merge sort is
2426 now the standard `qsort' function. The new algorithm can require a lot
2427 of temporary storage; so, the old sorting function is called when the
2428 required storage is not available.
2430 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2431 provides the Unix `crypt' function, plus some other entry points.
2433 * The code and header files taken from 4.4 BSD have been updated with the
2434 latest files released from Berkeley.
2436 ----------------------------------------------------------------------
2437 Copyright information:
2439 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2441 Permission is granted to anyone to make or distribute verbatim copies
2442 of this document as received, in any medium, provided that the
2443 copyright notice and this permission notice are preserved,
2444 thus giving the recipient permission to redistribute in turn.
2446 Permission is granted to distribute modified versions
2447 of this document, or of portions of it,
2448 under the above conditions, provided also that they
2449 carry prominent notices stating who last changed them.
2452 version-control: never
projects / thirdparty / glibc.git / blob