1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
13 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16198, 16284, 16348,
14 16349, 16357, 16362, 16447, 16516, 16532, 16545, 16564, 16574, 16599,
15 16600, 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634,
16 16639, 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683,
17 16689, 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731,
18 16739, 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789,
19 16791, 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16849,
20 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16912, 16915,
21 16916, 16917, 16922, 16927, 16928, 16932, 16943, 16958, 16965, 16966,
22 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031, 17042,
23 17048, 17058, 17062, 17069, 17075.
25 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
27 * The minimum Linux kernel version that this version of the GNU C Library
28 can be used with is 2.6.32.
30 * Running the testsuite no longer terminates as soon as a test fails.
31 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
32 with PASS or FAIL lines for individual tests. A summary of the results is
33 printed, including a list of failing lists, and "make check" exits with
34 error status if there were any unexpected failures. "make check
35 stop-on-test-failure=y" may be used to keep the old behavior.
37 * The am33 port, which had not worked for several years, has been removed
40 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
41 supported; they now act the same as _DEFAULT_SOURCE (but generate a
42 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
43 conflicted with POSIX (support for which was removed in 2.19), the
44 interfaces those macros enabled remain available when compiling with
45 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
48 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
50 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
51 This may improve lock scaling of existing programs on TX capable systems.
52 The lock elision code is only built with --enable-lock-elision=yes and
53 then requires a GCC version supporting the TX builtins. With lock elision
54 default mutexes are elided via __builtin_tbegin, if the cpu supports
55 transactions. By default lock elision is not enabled and the elision code
60 * The following bugs are resolved with this release:
62 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
63 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
64 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
65 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
66 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
67 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
68 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
69 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
70 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
71 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
72 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
73 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
74 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
75 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
76 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
77 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
78 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
79 16431, 16453, 16474, 16506, 16510, 16529
81 * Slovenian translations for glibc messages have been contributed by the
82 Translation Project's Slovenian team of translators.
84 * The public headers no longer use __unused nor __block. This change is to
85 support compiling programs that are derived from BSD sources and use
86 __unused internally, and to support compiling with Clang's -fblock
87 extension which uses __block.
89 * CVE-2012-4412 The strcoll implementation caches indices and rules for
90 large collation sequences to optimize multiple passes. This cache
91 computation may overflow for large collation sequences and may cause a
92 stack or buffer overflow. This is now fixed to use a slower algorithm
93 which does not use a cache if there is an integer overflow.
95 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
96 rules for large collation sequences to optimize multiple passes and falls
97 back to alloca if malloc fails, resulting in a possible stack overflow.
98 The implementation now falls back to an uncached collation sequence lookup
101 * CVE-2013-4788 The pointer guard used for pointer mangling was not
102 initialized for static applications resulting in the security feature
103 being disabled. The pointer guard is now correctly initialized to a
104 random value for static applications. Existing static applications need
105 to be recompiled to take advantage of the fix (bug 15754).
107 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
108 to the d_name member of struct dirent, or omit the terminating NUL
109 character. (Bugzilla #14699).
111 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
112 aligned_alloc functions could allocate too few bytes or corrupt the
113 heap when passed very large allocation size values (Bugzilla #15855,
116 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
117 for AF_INET6 has been fixed (Bugzilla #16072).
119 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
120 pap_CW, quz_PE, the_NP.
122 * Substantially revised locales: gd_GB, ht_HT
124 * The LC_ADDRESS field was updated to support country_car for almost all
127 * ISO 1427 definitions were updated.
129 * ISO 3166 definitions were updated.
131 * The localedef utility now supports --big-endian and --little-endian
132 command-line options to generate locales for a different system from that
133 for which the C library was built.
135 * Binary locale files now only depend on the endianness of the system for
136 which they are generated and not on other properties of that system. As a
137 consequence, binary files generated with new localedef may be incompatible
138 with old versions of the GNU C Library, and binary files generated with
139 old localedef may be incompatible with this version of the GNU C Library,
140 in the following circumstances:
142 + Locale files may be incompatible on m68k systems.
144 + Locale archive files (but not separate files for individual locales) may
145 be incompatible on systems where plain "char" is signed.
147 * The configure option --disable-versioning has been removed. Builds with
148 --disable-versioning had not worked for several years.
150 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
151 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
153 * SystemTap probes for malloc have been introduced.
155 * SystemTap probes for slow multiple precision fallback paths of
156 transcendental functions have been introduced.
158 * Support for powerpc64le has been added.
160 * The soft-float powerpc port now supports e500 processors.
162 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
164 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
165 set of header declarations that are enabled by default, even when other
166 feature test macros or compiler options such as -std=c99 would otherwise
167 disable some of those declarations.
169 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
170 conflict with POSIX. The libbsd-compat library (which was a dummy library
171 that did nothing) has also been removed.
173 * Preliminary documentation about Multi-Thread, Async-Signal and
174 Async-Cancel Safety has been added.
176 * Change of ABI data structures for s390 and s390x:
177 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
178 allow for future hardware extensions. All library functions that accept or
179 return these structures were versioned in order to provide backwards
180 compatibility with existing code. However, not all cases can be handled
181 with interface versioning. If an application embeds either structure into
182 another structure and that structure is passed to another compilation unit
183 which expects the newer larger-sized object then any access to the new
184 fields will result in undefined behaviour. Similarly any access to fields
185 that were moved by the enlarging of the structures will cause undefined
186 behaviour. To fix the undefined behaviour all objects that are part of the
187 final in-memory image must agree on the size of structures, and this may
188 require recompilation.
192 * The following bugs are resolved with this release:
194 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
195 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
196 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
197 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
198 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
199 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
200 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
201 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
202 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
203 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
204 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
205 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
206 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
209 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
210 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
211 Distributions can re-enable building and using pt_chown via the new configure
212 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
213 considerable security risks and should only be used if the distribution
214 understands and accepts the risks.
216 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
219 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
220 fixed (Bugzilla #15330).
222 * Add support for calling C++11 thread_local object destructors on thread
223 and program exit. This needs compiler support for offloading C++11
224 destructor calls to glibc.
226 * Improved worst case performance of libm functions with double inputs and
229 * Support for priority inherited mutexes in pthread condition variables on
230 non-x86 architectures.
232 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
234 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
236 * Optimized string functions for ARM. Implemented by Will Newton and
239 * Optimized libm functions for SPARC. Implemented by David S. Miller.
241 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
244 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
245 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
247 * Added a benchmark framework to track performance of functions in glibc.
249 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
250 It is based on draft TS 18661 and currently enabled as a GNU extension.
252 * On Linux, the clock function now uses the clock_gettime system call
253 for improved precision, rather than old times system call.
255 * Added support for version-3 tz format files. This is needed when using
256 the tz database release 2013e or later, and affects a few unusual cases --
257 currently only TZ='America/Godthab' for time stamps after 2037.
259 * Added new API functions pthread_getattr_default_np and
260 pthread_setattr_default_np to get and set the default pthread
261 attributes of a process.
263 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
264 This may improve lock scaling of existing programs on TSX capable systems.
265 When the --enable-lock-elision=yes parameter is specified at configure
266 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
269 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
270 availability). Implemented by Ryan S. Arnold.
272 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
276 * The following bugs are resolved with this release:
278 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
279 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
280 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
281 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
282 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
283 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
284 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
285 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
286 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
287 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
288 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
289 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
290 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
291 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
292 14879, 14889, 14893, 14898, 14914.
294 * Optimization of memcpy for MIPS.
296 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
297 EMFILE has been fixed (Bugzilla #14889).
299 * The add-on ports collection is now distributed in the "ports" subdirectory
300 of the main GNU C Library distribution, rather than separately.
302 * Port to ARM AArch64 contributed by Linaro.
304 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
305 Optimized versions of memcpy, memset, and memcmp added for System z10 and
307 Implemented by Andreas Krebbel.
309 * The new function secure_getenv allows secure access to the environment,
310 returning NULL if running in a SUID/SGID process. This function replaces
311 the internal function __secure_getenv.
313 * SystemTap static probes have been added into the dynamic linker.
314 Implemented by Gary Benson.
316 * Optimizations of string functions strstr, strcasestr and memmem.
317 Implemented by Maxim Kuvyrkov.
319 * The minimum Linux kernel version that this version of the GNU C Library
320 can be used with is 2.6.16.
322 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
323 powerpc POWER7. Implemented by Will Schmidt.
325 * New configure option --disable-nscd builds the C library such that it
326 never attempts to contact the Name Service Caching Daemon (nscd).
327 New configure option --disable-build-nscd avoids building nscd itself;
328 this is the default if --disable-nscd is used.
330 * Improved support for cross-compilation, including cross-testing and
331 bootstrap builds without a previously built glibc.
333 * Several testsuite tests are now able to test multiple IFUNC variants of an
334 interface, rather than just testing the one that would be chooen by
337 * New configure options --with-bugurl and --with-pkgversion, for
338 distributors to use to embed their bug-reporting and package version
339 information in --help and --version output.
341 * The ttyname and ttyname_r functions on Linux now fall back to searching for
342 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
343 allows creation of chroots without the procfs mounted on /proc.
345 * The `crypt' function now fails if passed salt bytes that violate the
346 specification for those values. On Linux, the `crypt' function will
347 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
348 enabled, and fail on encrypted strings using the MD5 or DES algorithm
349 when the mode is enabled.
351 * The `clock_*' suite of functions (declared in <time.h>) is now available
352 directly in the main C library. Previously it was necessary to link with
353 -lrt to use these functions. This change has the effect that a
354 single-threaded program that uses a function such as `clock_gettime' (and
355 is not linked with -lrt) will no longer implicitly load the pthreads
356 library at runtime and so will not suffer the overheads associated with
357 multi-thread support in other code such as the C++ runtime library.
359 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
364 * The following bugs are resolved with this release:
366 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
367 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
368 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
369 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
370 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
371 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
372 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
373 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
374 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
375 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
376 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
377 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
378 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
379 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
380 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
381 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
382 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
383 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
384 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
385 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
386 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
387 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
390 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
391 configuring glibc with:
392 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
393 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
394 Implemented by H.J. Lu.
398 + define static_assert
400 + do not declare gets
402 + declare at_quick_exit and quick_exit also for ISO C11
404 + aligned_alloc. NB: The code is deliberately allows the size parameter
405 to not be a multiple of the alignment. This is a moronic requirement
406 in the standard but it is only a requirement on the caller, not the
411 + uchar.h support added
413 + CMPLX, CMPLXF, CMPLXL added
415 Implemented by Ulrich Drepper.
417 * Support for the IA-64 has been moved to ports.
419 * Remove support for anything but ELF binary format
421 * Checking versions of poll, ppoll added.
422 Implemented by Ulrich Drepper.
424 * More generic and 64-bit performance optimizations to math functions.
425 Implemented by Ulrich Drepper.
427 * New configure option --enable-obsolete-rpc makes the deprecated RPC
428 headers and functions available at compile time as they were before
429 version 2.14. This option will be removed at some time in the future
430 after the TI-RPC library becomes fully sufficient for the needs of
431 existing applications.
433 * Compatibility code for Linux kernel versions before 2.4 has been removed.
434 Note that glibc is not expected to work with any Linux kernel version
437 * New header <sys/auxv.h> and function getauxval allowing easy access to
438 the AT_* key-value pairs passed from the Linux kernel. The header also
439 defines the HWCAP_* bits associated with the AT_HWCAP key.
441 * New locales: mag_IN
443 * New configure option --enable-systemtap builds SystemTap static probes
444 into libc for setjmp and longjmp and into libpthread for various operations.
445 So far the setjmp/longjmp probes and some of the libpthread probes are
446 provided only for i*86 and x86_64.
447 Implemented by Roland McGrath and Rayson Ho.
449 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
451 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
454 * More optimized functions for SPARC. Implemented by David S. Miller.
456 * Improved support for cross-compilation, especially bootstrap builds
457 without a previously built glibc.
459 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
460 Chris Metcalf from Tilera.
462 * Support for the old ARM ABI has been removed from ports. Only the EABI is
463 now supported for ARM processors.
465 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
466 as the name of the dynamic linker, to distinguish it from the
467 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
469 * Support for CRIS has been removed from ports.
471 * A new class of installed header has been documented for low-level
472 platform-specific functionality. PowerPC added the first instance with a
473 function to provide time base register access. Contributed by Tulio
474 Magno Quites Machado Filho.
476 * ix86 configurations now install header files that are consistent with
477 what x86-64 configurations install. These same header files can be used
478 for -m32, -m64, or -mx32 builds.
479 Contributed by H.J. Lu.
481 * Math library bug fixes. A thorough audit of all open math library bugs was
482 conducted by Joseph Myers. Significant progress was made on many math
483 library bugs resulting in more accurate exceptions and function results.
484 Many thanks to all those that contributed including Andreas Jaeger for his
485 patch review and work on the x87 trigonometric instruction issues.
487 * Timezone data is no longer installed. Timezone-related binaries and scripts
488 will continue to be installed. Users should obtain their timezone data from
489 their distribution provider or from the tzdata package at
490 <ftp://munnari.oz.au/pub/>.
494 * The following bugs are resolved with this release:
496 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
497 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
498 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
499 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
500 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
501 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
502 13484, 13506, 13515, 13523, 13524, 13538, 13540
504 * New program pldd to list loaded object of a process
505 Implemented by Ulrich Drepper.
507 * Add nss_db support back to glibc. No more dependency on Berkeley db
508 and support for initgroups lookups.
509 Implemented by Ulrich Drepper.
511 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
512 Contributed by HJ Lu.
514 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
515 Contributed by HJ Lu.
517 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
518 on x86-32 and x86-64.
519 Contributed by Liubov Dmitrieva.
521 * Optimized strchr and strrchr for SSE on x86-32.
522 Contributed by Liubov Dmitrieva.
524 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
525 for x86-64 and x86-32.
526 Contributed by Liubov Dmitrieva.
528 * New interfaces: scandirat, scandirat64
529 Implemented by Ulrich Drepper.
531 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
532 Implemented by Ulrich Drepper.
534 * nscd now also caches the netgroup database.
535 Implemented by Ulrich Drepper.
537 * Integrate libm with gcc's -ffinite-math-only option.
538 Implemented by Ulrich Drepper.
540 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
541 to math functions. Implemented by Ulrich Drepper.
543 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
544 Implemented by Ulrich Drepper.
546 * New Linux interfaces: process_vm_readv, process_vm_writev
548 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
549 Implemented by Ulrich Drepper.
551 * Optimized nearbyint and strcasecmp for PPC.
552 Implemented by Adhemerval Zanella.
554 * New locales: bho_IN, unm_US, es_CU, ta_LK
558 * The following bugs are resolved with this release:
560 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
561 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
562 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
563 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
564 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
565 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
566 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
567 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
568 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
569 12795, 12811, 12813, 12814, 12841
571 * The RPC implementation in libc is obsoleted. Old programs keep working
572 but new programs cannot be linked with the routines in libc anymore.
573 Programs in need of RPC functionality must be linked against TI-RPC.
574 The TI-RPC implementation is IPv6 enabled and there are other benefits.
576 Visible changes of this change include (obviously) the inability to link
577 programs using RPC functions without referencing the TI-RPC library and the
578 removal of the RPC headers from the glibc headers.
579 Implemented by Ulrich Drepper.
581 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
582 syncfs, setns, sendmmsg
584 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
585 yue_HK, lij_IT, mhr_RU
587 * New encodings: CP770, CP771, CP772, CP773, CP774
589 * New program sotruss to trace calls through PLTs
590 Implemented by Ulrich Drepper.
592 * The malloc hook implementation is marked deprecated and will be removed
593 from the default implementation in the next version. The design never
594 worked ever since the introduction of threads. Even programs which do
595 not create threads themselves can use multiple threads created internally.
599 * The following bugs are resolved with this release:
601 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
602 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
603 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
604 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
607 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
609 * POWER7 optimizations: memset, memcmp, strncmp
611 * New optimized string functions for x86-64: strnlen (SSE2),
612 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
613 Implemented by Ulrich Drepper.
617 * The following bugs are resolved with this release:
619 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
620 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
621 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
622 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
623 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
624 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
625 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
626 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
628 * New interfaces: pthread_getname_np, pthread_setname_np
630 * New Linux interface: recvmmsg
632 * STT_GNU_IFUNC implemented for Sparc by David Miller.
634 * The dynamic linker now recognizes supported ABI versions from the
635 EI_ABIVERSION field in the ELF header.
636 Implemented by Ulrich Drepper.
638 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
639 will not be used to fill in password fields in the passwd.byname replies.
640 Instead it is used to synthesize the shadow.byname table, should it be
641 missing. This is a useful mode in some installations involving Solaris.
642 Implemented by Ulrich Drepper.
644 * New locales: kok_IN, sq_MK, cv_RU
648 * The following bugs are resolved with this release:
650 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
651 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
652 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
653 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
654 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
655 10789, 10817, 10823, 10840, 10847
657 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
659 Implemented by Ulrich Drepper.
661 * Checking version of longjmp added that fails if an uninitialized stack
662 frame would be created. Implemented by Ulrich Drepper.
664 * STT_GNU_IFUNC is now supported in static executables.
665 Implemented by H.J. Lu.
667 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
669 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
670 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
671 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
672 Contributed by H.J. Lu.
674 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
675 Implemented by Ulrich Drepper.
677 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
679 Contributed by H.J. Lu.
681 * Support for fma instruction in AVX on x86-64.
682 Implemented by H.J. Lu and Ulrich Drepper.
684 * AVX support in x86-64 auditing support in ld.so.
685 Implemented by H.J. Lu.
687 * STB_GNU_UNIQUE support added.
688 Implemented by Ulrich Drepper.
690 * Implement second fallback mode for optimized DNS lookup for even more
691 broken environments. If two requests from the same port are not
692 handled correctly close the socket and open a new one before sending
693 the second request. The 'single-request-reopen' option in /etc/resolv.conf
694 can be used to select this mode right away, instead of rediscovering the
695 necessity is every process again.
696 Implemented by Ulrich Drepper.
698 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
699 Implemented by Adam Tkac.
701 * Optimized iconv conversions for S390x.
702 Implemented by Andreas Krebbel.
704 * Using condvars with PI mutexes is now more efficient due to kernel
705 support for requeueing to PI futexes. NPTL support added for x86-64.
706 Implemented by Ulrich Drepper.
708 * New locales: ps_AF, my_MM
712 * The following bugs are resolved with this release:
714 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
715 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
716 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
717 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
718 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
720 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
721 Implemented by Ulrich Drepper.
723 * New Linux interfaces: accept4, fallocate, fallocate64.
724 Implemented by Ulrich Drepper.
726 * Correct declarations of string function when used in C++ code. This
727 could lead to compile errors for invalid C++ code.
729 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
732 * New POSIX 2008 interface: psiginfo
733 Implemented by Ulrich Drepper.
735 * New ISO C++1x interfaces: quick_exit, at_quick_exit
736 Implemented by Ulrich Drepper.
738 * Support for selecting between multiple function definitions at runtime
739 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
741 * The libcrypt library can now use the hash function implementations in
742 NSS. Implemented by Ulrich Drepper.
744 * The malloc implementation can be compiled to be less memory efficient
745 but higher performing in multi-threaded programs.
746 Implemented by Ulrich Drepper.
748 * New locales: nan_TW@latin, ks_IN
750 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
751 Implemented by Ulrich Drepper.
753 * Extended printf hook support. It is possible to use user-defined types
754 and extend existing format specifiers.
755 Implemented by Ulrich Drepper.
757 * Handling for group shadow files has been added.
758 Implemented by Ulrich Drepper.
760 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
761 servers (the case, e.g., for some people using the built-in DNS
762 server in ADSL modems/routers). There is a once-per-process timeout
763 in case of a broken server. To avoid it, users can run nscd or put
764 'options single-request' in /etc/resolv.conf.
765 Implemented by Ulrich Drepper.
769 * The following bugs are resolved with this release:
771 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
772 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
773 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
774 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
775 6968, 6974, 6980, 6995, 7008, 7009, 7029
777 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
778 up at the same time. Implemented by Ulrich Drepper.
780 * TLS descriptors for LD and GD on x86 and x86-64.
781 Implemented by Alexandre Oliva.
783 * getaddrinfo now handles DCCP and UDPlite.
784 Implemented by Ulrich Drepper.
786 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
787 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
788 Implemented by Ulrich Drepper.
790 * New implementation of memmem, strstr, and strcasestr which is O(n).
791 Implemented by Eric Blake.
793 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
795 * Implement "e" option for popen to open file descriptor with the
796 close-on-exec flag set. Implemented by Ulrich Drepper.
798 * Implement "b" mode for fmemopen. In this mode writes writes don't
799 implicitly add a NUL byte and seeks from the end of the buffer really
800 use the buffer end, not the string length as the basis.
801 Implemented by Ulrich Drepper.
803 * Many functions, exported and internal, now atomically set the close-on-exec
804 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
806 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
808 Implemented by Pravin Satpute.
810 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
814 * The following bugs are resolved with this release:
816 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
817 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
818 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
819 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
820 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
821 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
822 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
824 * New locales: bo_CN, bo_IN, shs_CA.
826 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
828 * Sorting rules for some Indian languages (Devanagari and Gujarati).
829 Implemented by Pravin Satpute.
831 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
833 * nscd caches now all timeouts for DNS entries
834 Implemented by Ulrich Drepper.
836 * nscd is more efficient and wakes up less often.
837 Implemented by Ulrich Drepper.
839 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
840 vdprintf, and obstack_vprintf.
841 Implemented by Jakub Jelinek.
843 * Faster memset for x86-64.
844 Implemented by Harsha Jagasia and H.J. Lu.
846 * Faster memcpy on x86.
847 Implemented by Ulrich Drepper.
849 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
850 Implemented by Ulrich Drepper.
852 * Faster sqrt and sqrtf implemention for some PPC variants.
853 Implemented by Steven Munroe.
857 * The following bugs are resolved with this release:
859 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
860 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
861 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
862 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
863 5071, 5103, 5104, 5112, 5113, 5184, 5186
865 * More checking functions: fread, fread_unlocked, open*, mq_open.
866 Implemented by Jakub Jelinek and Ulrich Drepper.
868 * Extend fortification to C++. Implemented by Jakub Jelinek.
870 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
871 by not recognizing 'a' as a modifier when those specs are requested.
872 Implemented by Jakub Jelinek.
874 * PPC optimizations to math and string functions.
875 Implemented by Steven Munroe.
877 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
878 options to be passed. Implemented by Ulrich Drepper.
880 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
882 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
883 Implemented by Ulrich Drepper.
885 * Handle private futexes in the NPTL implementation.
886 Implemented by Jakub Jelinek and Ulrich Drepper.
888 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
889 Implemented by Roland McGrath and Ulrich Drepper.
891 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
893 * SHA-256 and SHA-512 based password encryption.
894 Implemented by Ulrich Drepper.
896 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
897 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
900 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
901 Implemented by Ulrich Drepper.
905 * The following bugs are resolved with this release:
907 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
908 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
909 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
910 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
911 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
912 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
913 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
916 * New Linux interfaces: epoll_pwait, sched_getcpu.
918 * New generic interfaces: strerror_l.
920 * nscd can now cache the services database. Implemented by Ulrich Drepper.
924 * The following bugs are resolved with this release:
926 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
927 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
928 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
929 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
930 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
931 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
932 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
933 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
934 3225, 3251, 3252, 3253, 3273
936 * For Linux, the sorting of addresses returned by getaddrinfo now also
937 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
938 Implemented by Ulrich Drepper.
940 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
941 Implemented by Ulrich Drepper.
943 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
945 * New iconv module for MIK. Contributed by Alexander Shopov.
947 * For sites with broken group and/or passwd database, the auto-propagate
948 option of nscd can prevent creating ID lookup entries from the results
949 of a name lookup and vice versa. This usually is no problem but some
950 site might have problems with the default behavior.
951 Implemented by Ulrich Drepper.
953 * Iterating over entire database in NIS can be slow. With the
954 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
955 to trade time for memory. The entire database will be read at once.
956 Implemented by Ulrich Drepper.
958 * The interfaces introduced in RFC 3542 have been implemented by
961 * Support for the new ELF hash table format was added by Ulrich Drepper.
963 * Support for priority inheritance mutexes added by Jakub Jelinek and
966 * Support for priority protected mutexes added by Jakub Jelinek.
968 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
969 or_IN, csb_PL, fy_NL, sr_ME.
973 * More overflow detection functions.
975 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
976 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
978 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
979 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
980 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
981 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
982 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
983 by Masahide Washizawa.
985 * It is now possible to install audit libraries for the dynamic linker using
986 LD_AUDIT. Implemented by Ulrich Drepper.
988 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
989 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
990 For a libc and libpthread that works well on Linux 2.4 kernels, we
991 recommend using the stable 2.3 branch.
993 * The new function open_wmemstream acts like open_memstream,
994 but uses a wchar_t wide character buffer.
996 * The new function ppoll is an improved version of poll, similar to pselect.
998 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
999 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1000 renameat, unlinkat, linkat, symlinkat, readlinkat.
1002 * New Linux kernel system calls: unshare,
1003 inotify_init, inotify_add_watch, inotify_rm_watch.
1005 * The euidaccess function is now also known by the alias eaccess,
1006 for compatibility with some other systems.
1008 * Timezone data updated to 2006b version.
1012 * The following bugs are resolved with this release:
1014 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1015 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1016 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1017 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1018 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1019 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1021 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1023 * As of this release, GCC 4 can be used to compile the C Library.
1025 * Timezone data updated to 2005m version.
1029 * The following bugs are resolved with this release:
1031 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1032 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1033 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1034 777, 787, 821, 822, 823, 825
1036 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1040 * Support for RFC 3678. Real implementations exist only for Linux so far.
1041 Implemented by Ulrich Drepper.
1043 * nscd can now cache entries persistently. Expiring entries are reloaded.
1044 For speedups the cache can be shared in memory with client processes.
1045 Implemented by Ulrich Drepper.
1047 * nscd can now perform SELinux checks.
1048 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1050 * getaddrinfo queries are now cached. Canonical name lookup is performed
1052 Implemented by Ulrich Drepper.
1054 * The nothrow function attribute is used when headers are used by gcc when
1055 compiling C code. This can avoid significant amounts of exception
1058 * The malloc functions perform more error checking and are stricter when
1059 it comes to reacting on errors. The default action is to terminate
1060 the process after showing an error message. Implemented by Ulrich Drepper.
1062 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1063 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1065 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1066 namespaces using the new function dlmopen(). This feature is of course,
1067 like most other dynamic loading functionality, not available in statically
1068 linked applications. Implemented by Ulrich Drepper.
1070 * Low-overhead boundary checking variants of string and some stdio functions
1071 were added. These are to be used in conjunction with a gcc patch by
1072 Jakub Jelinek which adds calls to these functions if possible.
1073 Implemented by Jakub Jelinek and Ulrich Drepper.
1075 * Old code for several operating systems and machine architectures that
1076 have not been in working condition in a long time have been removed from
1077 the main source tree maintained by the GNU C Library's maintainers.
1078 These files are now reside in the separate `ports' source module
1079 that is usable as an add-on when building the library.
1083 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1084 interrogate the dynamic linker, compatible with the Solaris interface.
1086 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1087 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1089 * getifaddrs now uses the netlink interface on Linux to get its information.
1090 Implemented by Thorsten Kukuk.
1092 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1093 Implemented by Ulrich Drepper.
1095 * support for non-executable stacks on x86 has been added. Changes mostly
1098 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1101 * getaddrinfo now performs destination address selection according to
1106 * Thread-safe interfaces for many functions that access locale data
1107 were added in version 2.3, but these features were omitted from NEWS.
1108 Many functions have variants with an `_l' suffix that take a `locale_t'
1109 object as a parameter rather than consulting the current locale.
1110 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1111 create and maintain `locale_t' objects. Additionally, the new function
1112 `uselocale' sets "the current locale" (as used by functions not so
1113 parameterized) set for an individual thread. These features were added
1114 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1116 * The functions getresuid, getresgid, setresuid, and setresgid, which
1117 have long been available on Linux, are now declared in <unistd.h>
1118 and are now also available on the Hurd.
1120 * ELF thread-local storage support (TLS) now works on x86-64.
1122 * The new dynamic string token $LIB is expanded in shared library names.
1123 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1125 * Aldy Hernandez contributed complete software floating point support for
1126 PowerPC machines with no FPU.
1128 * fexecve is implemented on Linux.
1130 * The `btowc' function should work at least twice as fast due to
1131 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1133 * With approriate thread add-ons cancelable functions are now implemented
1134 in libc.so as well. No need to call the function in libpthread. This
1135 change allowed to finally disable the incorrect and expensive handling
1136 of weak definition in ld.so.
1138 * Yet more PLT entries in libc.so have been removed. We finally arrived
1139 at the bare minimum. Startup times improved appropriately.
1141 * Support for the new Linux/x86 system call interface was added. The
1142 AT_SYSINFO auxiliary vector entry is recognized and handled.
1146 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1149 * iconv (the program and the interface) now accepts empty names (excluding
1150 options like //TRANSLIT) to mean "use charset of current locale".
1152 * localedef can now transliterate characters in strings which are not in
1153 the provided charmap. The information from the input locale is used.
1155 * Prelinking support was added for ELF targets. This requires additional
1156 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1158 * Read-only stdio streams now use mmap to speed up operation by eliminating
1159 copying and buffer underflows. To use add 'm' to the mode string of
1160 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1162 * The malloc functions were completely rewritten by Wolfram Gloger based
1163 on Doug Lea's malloc-2.7.0.c.
1165 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1166 implementation of regex.
1168 * Bruno Haible upgraded the iconv and locale implementation to support
1171 * Contents of the LC_* and LANG environment variables in the CEN style are
1172 not recognized anymore. It never was used. Change by Ulrich Drepper.
1174 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1175 thread-local storage (TLS) ABI on some platforms.
1176 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1178 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1179 EUC-JISX0213, and TSCII.
1181 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1182 BSD-compatible interface for getting all network interface addresses.
1183 Implementation for IPv4 by Roland McGrath.
1185 * Loading of locale data is faster due to the introduction of a locale
1186 archive. Implemented by Roland McGrath and Ulrich Drepper.
1188 * Startup times are significantly reduced by not using exported functions
1189 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1192 * Steven Munroe contributed a port to PowerPC64/Linux.
1196 * The Hurd now uses the GNU libio implementation of stdio rather than the
1197 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1199 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1200 with the same behavior as the Linux system call of the same name.
1204 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1205 128-bit long double format.
1207 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1208 IBM1161, and IBM1162 charsets.
1210 * Andreas Jaeger contributed a port to x86-64/Linux.
1212 * Peter Bruin contributed a port to PowerPC/Hurd.
1214 * libc functions using I/O streams now can handle wide-oriented streams
1217 * optimizations in the dynamic linker. Binaries created by recent binutils
1218 versions start up quicker due to reduced time spent on relocations.
1220 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1224 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1225 asinh, atanh, j0 for the 128-bit long double format.
1227 * Bruno Haible updated all the code handling Unicode in some form to
1228 support Unicode 3.1.
1230 * Speed of regex for single-byte locales is back to previous levels.
1231 Patch by Isamu Hasegawa.
1233 * Alpha, SPARC, and IA-64 now also using floating stacks.
1235 * Startup time of internationalized applications greatly improved through
1236 iconv cache. Use iconvconfig to generate the cache file.
1237 Contributed by Ulrich Drepper.
1239 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1240 severe performance problems. Patch by David Mosberger.
1242 * The Hurd port got a lot more functionality like AIO, various stdio
1243 extensions, etc. Mainly done by Roland McGrath.
1245 * mtrace can now lookup symbols in shared libraries.
1249 * Intel's IA-64 math library is largely integrated. It provides fast and
1250 accurate implementatations for most basic and standard math functions
1251 in float, double, and long double format.
1253 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1254 and asin for the 96-bit long double format and asin, log, tan for the
1255 128-bit long double format.
1257 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1258 The basic double functions exist today. Contributed by Abraham Ziv
1259 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1260 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1262 * An asynchronous name lookup library was added. The interface is designed
1263 after POSIX AIO. The proposal was circulated beforehand to get comments.
1264 No negative ones came in. Implemented by Ulrich Drepper.
1266 * Port to S390/64bit contributed by Martin Schwidefsky
1267 <schwidefsky@de.ibm.com>.
1269 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1270 of functions for Linux/IA-64.
1272 * The RPC code is now thread safe. Threads can now use the same service
1273 of different services at the same time. Patch by Eric Norum
1274 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1276 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1277 family of functions for Linux/S390.
1279 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1280 of functions for Linux/x86.
1282 * Port to Linux/CRIS contributed by Axis Communications.
1286 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1287 we can now check for namespace violations and missing declarations. The
1288 result is that almost all headers are now Unix-compliant (as defined in
1289 the upcoming XPG6). The negative side is that some programs might need
1290 corrections, too, if they depend on the incorrect form of the headers in
1291 previous versions which defined too many symbols and included too many
1294 * regex now handles multibyte character sets correctly.
1295 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1297 * iconv (the program) does now conform to the upcoming XPG6 and handles
1298 charmaps. Instead of the charset names the path of charmaps can be
1299 provided and the conversion happens based on this data.
1300 Contributed by Ulrich Drepper.
1302 * The locale program now provides detailed information about the installed
1307 only lists the names of the supported locales
1311 provides details such as country, language, and codeset name.
1312 Contributed by Ulrich Drepper.
1316 * The gencat program now parses the input file according to the charset
1317 selected by the LC_CTYPE category. This is important for stateful
1318 character sets. To make generating catalogs easier there is a way
1319 to overwrite the charset selected by the locale: before the first
1320 message or $ quote line the catalog can contain a line like
1322 $ codeset=ISO-8859-2
1324 to select the charset (ISO-8859-2 in this case).
1326 Implemented by Shinya Hanataka and Ulrich Drepper.
1328 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1329 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1330 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1332 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1333 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1335 * The LANGUAGE environment variable is now ignored unless the locale is
1336 changed from the default "C" locale.
1338 * The usual bug fixes.
1342 * Greg McGary added runtime support for bounds checking using gcc's
1343 new -fbounded-pointers option. ix86 target is complete. PowerPC
1346 * Thorsten Kukuk added secure mode support to nscd.
1348 * The Berkeley db libraries have been removed.
1350 Related, the nss_db module is now in a separate package since it
1351 obviously requires a database library being available.
1353 * Wide character I/O streams implemented by Ulrich Drepper.
1355 * Functions from the extended socket API added by Ulrich Drepper.
1357 * Functions feenableexcept and fedisableexcept to control the
1358 behaviour of individual exceptions have been added by Andreas Jaeger.
1360 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1362 * The resolver code has been updated from bind 8.2.3-T5B which supports
1363 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1366 This change could in some situations effect backward compatibility. Since
1367 now `_res' is a thread-local instead of a global variable, modifying it
1368 in one thread does not have any effect in other threads.
1370 The resolver library was also extended to allow IPv6 as the transport
1371 protocol for the requests. This work was done by Stig Venaas.
1373 * Compatibility code for K&R C compilers has been removed from the
1374 header files. A ISO C compiler is needed to use the library
1375 (conforming to either C89 or C99 standard).
1377 * Complete rewrite of the localedef program to support multibyte character
1378 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1379 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1380 Implemented by Ulrich Drepper.
1382 Bruno Haible significantly improved the generation and use of the data
1383 structures for the wide character tables.
1385 * Plural handling in gettext implemented by Ulrich Drepper.
1387 * The utmp daemon has been removed.
1389 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1391 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1394 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1396 * POSIX barriers implemented by Kaz Kylheku.
1398 * POSIX spawn function family implemented by Ulrich Drepper.
1400 * POSIX spinlocks are now available.
1402 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1404 * the configure option --enable-kernel=X.Y.Z allows to strip out
1405 compatibility for kernel versions before X.Y.Z. This is currently only
1406 implemented for Linux.
1408 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1409 field sin6_scope_id. This means that all programs using IPv6 should be
1410 recompiled. Don't expect binary compatibility with previous glibc
1413 * various conversion modules for IBM character sets contributed by
1416 * IA-64 port by Jes Sorensen and HJ Lu.
1430 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1432 * New xdr functions are added; some rpc functions are now 64bit clean.
1434 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1436 * Fixed known incompatibilities with glibc 2.0.
1438 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1440 * Optimized a number of functions (especially the ELF dynamic loader).
1442 * Update timezone data files.
1444 * lots of charmaps corrections
1446 * some new locale definitions and charmaps
1451 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1452 conform to POSIX member type requirements. Symbol versions have been
1453 adjusted as needed within the library, and for direct use by applications,
1454 but there is potential for problems if third-party libraries use
1455 struct timeval as part of their interface. This does not present
1456 a problem for X and other "essential" system libraries.
1458 * An additional locale model to support C++ Standard Library locale
1459 model and probably more was implemented by Ulrich Drepper.
1461 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1464 * Miles Bader provided the `argp' function family to support hierachical
1465 command line argument parsing, layered on top of getopt.
1467 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1469 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1472 * scanf recognizes the %a and %A format for scanning floating point numbers.
1474 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1475 information and interfaces for the available integer types.
1477 * about 130 new math functions were added to implement the ISO C9x math
1480 * the new header <complex.h> contains definitions of the complex math
1481 functions from ISO C 9X.
1483 * the new header <tgmath.h> defines generic macros to use complex or
1484 real valued functions.
1486 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1488 * Andreas Jaeger provided a test suite for the math library.
1490 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1492 * Ulrich Drepper added character set conversion functions (iconv).
1494 * Optimized string functions have been added.
1496 * The localedata addon is now part of glibc.
1498 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1500 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1501 daemon for NSS (nscd).
1503 Missing a better place here are some numbers on improvements. Under
1504 Linux 2.1.125 un-tar-ing the kernel sources takes
1508 using local files 12.19s 6.88s 22.91s
1510 using NIS 13.92s 8.91s 26.34s
1512 using NIS & nscd 10.37s 7.34s 25.30s
1514 using NIS+ 27.57s 30.37s 640.46s
1516 using NIS+ & nscd 10.25s 7.83s 26.51s
1518 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1520 Keep in mind that non-namelookup related operations dominate above times.
1521 It was just a common complain that using NIS+ unpacking the kernel is
1524 [1] The old nscd implementation is not available anymore since it was
1525 distributed with glibc up to version 2.0.98 and thus is now replaced.
1527 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1529 * Mark Kettenis provided a Hesiod NSS module.
1531 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1532 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1534 * rcmd can now handle netgroups (Dick Streefland).
1536 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1539 * Support for the IPv6 protocol has been added to the socket API, as per the
1540 latest draft standards.
1542 * Support for Linux 2.2 has been added.
1544 * Interface changes relative to the latest 2.0.x release:
1545 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1546 addseverity NEW: Unix98
1547 alphasort64 NEW: LFS
1548 argp_err_exit_status NEW: argp, GNU ext
1549 argp_error NEW: argp, GNU ext
1550 argp_failure NEW: argp, GNU ext
1551 argp_help NEW: argp, GNU ext
1552 argp_parse NEW: argp, GNU ext
1553 argp_program_bug_address NEW: argp, GNU ext
1554 argp_program_version NEW: argp, GNU ext
1555 argp_program_version_hook NEW: argp, GNU ext
1556 argp_state_help NEW: argp, GNU ext
1557 argp_usage NEW: argp, GNU ext
1558 authdes_create NEW: Secure RPC
1559 authdes_getucred NEW: Secure RPC
1560 authdes_pk_create NEW: Secure RPC
1561 backtrace NEW: GNU ext.
1562 backtrace_symbols NEW: GNU ext.
1563 backtrace_symbols_fd NEW: GNU ext.
1565 cacosf NEW: ISO C 9x
1566 cacosh NEW: ISO C 9x
1567 cacoshf NEW: ISO C 9x
1568 cacoshl NEW: ISO C 9x
1569 cacosl NEW: ISO C 9x
1576 casinf NEW: ISO C 9x
1577 casinh NEW: ISO C 9x
1578 casinhf NEW: ISO C 9x
1579 casinhl NEW: ISO C 9x
1580 casinl NEW: ISO C 9x
1582 catanf NEW: ISO C 9x
1583 catanh NEW: ISO C 9x
1584 catanhf NEW: ISO C 9x
1585 catanhl NEW: ISO C 9x
1586 catanl NEW: ISO C 9x
1587 cbc_crypt NEW: Secure RPC
1591 ccoshf NEW: ISO C 9x
1592 ccoshl NEW: ISO C 9x
1598 cimagf NEW: ISO C 9x
1599 cimagl NEW: ISO C 9x
1600 clearerr_locked REMOVED
1601 clntunix_create NEW: sunrpc ext
1603 clog10 NEW: ISO C 9x
1604 clog10f NEW: ISO C 9x
1605 clog10l NEW: ISO C 9x
1615 cprojf NEW: ISO C 9x
1616 cprojl NEW: ISO C 9x
1618 crealf NEW: ISO C 9x
1619 creall NEW: ISO C 9x
1624 csinhf NEW: ISO C 9x
1625 csinhl NEW: ISO C 9x
1628 csqrtf NEW: ISO C 9x
1629 csqrtl NEW: ISO C 9x
1633 ctanhf NEW: ISO C 9x
1634 ctanhl NEW: ISO C 9x
1636 des_setparity NEW: Secure RPC
1637 ecb_crypt NEW: Secure RPC
1638 endutxent NEW: Unix98
1640 exp10f NEW: ISO C 9x
1641 exp10l NEW: ISO C 9x
1645 fattach NEW: STREAMS
1646 fdetach NEW: STREAMS
1650 feclearexcept NEW: ISO C 9x
1651 fegetenv NEW: ISO C 9x
1652 fegetexceptflag NEW: ISO C 9x
1653 fegetround NEW: ISO C 9x
1654 feholdexcept NEW: ISO C 9x
1656 feraiseexcept NEW: ISO C 9x
1657 ferror_locked REMOVED
1658 fesetenv NEW: ISO C 9x
1659 fesetexceptflag NEW: ISO C 9x
1660 fesetround NEW: ISO C 9x
1661 fetestexcept NEW: ISO C 9x
1662 feupdateenv NEW: ISO C 9x
1663 fflush_locked REMOVED
1667 fgets_unlocked NEW: GNU ext.
1668 fileno_locked REMOVED
1680 fputc_locked REMOVED
1681 fputs_unlocked NEW: GNU ext.
1682 fread_unlocked NEW: GNU ext.
1687 fstatvfs NEW: Unix98
1691 ftruncate64 NEW: LFS
1693 fwrite_unlocked NEW: GNU ext.
1694 gai_strerror NEW: IPv6
1698 getchar_locked REMOVED
1700 getdate_err NEW: Unix98
1701 getdate_r NEW: GNU ext.
1703 getnameinfo NEW: IPv6
1704 getnetname NEW: Secure RPC
1705 getpmsg NEW: STREAMS
1706 getpt NEW: Unix98 PTY
1707 getrlimit64 NEW: LFS
1708 getutxent NEW: Unix98
1709 getutxid NEW: Unix98
1710 getutxline NEW: Unix98
1711 glob64 NEW: GNU ext.
1712 globfree64 NEW: GNU ext.
1713 gnu_get_libc_release NEW: GNU ext.
1714 gnu_get_libc_version NEW: GNU ext.
1715 grantpt NEW: Unix98 PTY
1716 host2netname NEW: Secure RPC
1718 iconv_close NEW: iconv
1719 iconv_open NEW: iconv
1720 if_freenameindex NEW: IPv6
1721 if_indextoname NEW: IPv6
1722 if_nameindex NEW: IPv6
1723 if_nametoindex NEW: IPv6
1724 in6addr_any NEW: IPv6
1725 in6addr_loopback NEW: IPv6
1726 inet6_isipv4mapped NEW: IPv6
1727 isastream NEW: STREAMS
1728 iswblank NEW: GNU ext.
1729 key_decryptsession NEW: Secure RPC
1730 key_decryptsession_pk NEW: Secure RPC
1731 key_encryptsession NEW: Secure RPC
1732 key_encryptsession_pk NEW: Secure RPC
1733 key_gendes NEW: Secure RPC
1734 key_get_conv NEW: Secure RPC
1735 key_secretkey_is_set NEW: Secure RPC
1736 key_setnet NEW: Secure RPC
1737 key_setsecret NEW: Secure RPC
1738 llrint NEW: ISO C 9x
1739 llrintf NEW: ISO C 9x
1740 llrintl NEW: ISO C 9x
1741 llround NEW: ISO C 9x
1742 llroundf NEW: ISO C 9x
1743 llroundl NEW: ISO C 9x
1748 lrintf NEW: ISO C 9x
1749 lrintl NEW: ISO C 9x
1750 lround NEW: ISO C 9x
1751 lroundf NEW: ISO C 9x
1752 lroundl NEW: ISO C 9x
1754 makecontext NEW: Unix98
1755 mempcpy NEW: GNU ext.
1758 modify_ldt NEW: kernel
1762 nearbyint NEW: ISO C 9x
1763 nearbyintf NEW: ISO C 9x
1764 nearbyintl NEW: ISO C 9x
1765 netname2host NEW: Secure RPC
1766 netname2user NEW: Secure RPC
1767 nexttoward NEW: ISO C 9x
1768 nexttowardf NEW: ISO C 9x
1769 nexttowardl NEW: ISO C 9x
1773 passwd2des NEW: Secure RPC
1775 pow10f NEW: GNU ext.
1776 pow10l NEW: GNU ext.
1779 printf_size NEW: GNU ext.
1780 printf_size_info NEW: GNU ext.
1781 profil_counter REMOVED
1782 pthread_mutexattr_getkind_np REPLACED
1783 pthread_mutexattr_setkind_np REPLACED
1784 ptsname NEW: Unix98 PTY
1785 ptsname_r NEW: Unix98 PTY
1787 putchar_locked REMOVED
1788 putgrent NEW: GNU ext.
1790 putpmsg NEW: STREAMS
1791 pututxline NEW: Unix98
1795 readdir64_r NEW: LFS
1796 remquo NEW: ISO C 9x
1797 remquof NEW: ISO C 9x
1798 remquol NEW: ISO C 9x
1800 roundf NEW: ISO C 9x
1801 roundl NEW: ISO C 9x
1803 scalbln NEW: ISO C 9x
1804 scalblnf NEW: ISO C 9x
1805 scalblnl NEW: ISO C 9x
1807 sendfile NEW: kernel
1808 setcontext NEW: Unix98
1809 setrlimit64 NEW: LFS
1810 setutxent NEW: Unix98
1812 sigignore NEW: Unix98
1813 sigqueue NEW: POSIX.1b
1814 sigrelse NEW: Unix98
1815 sigset NEW: POSIX.1b
1816 sigtimedwait NEW: POSIX.1b
1817 sigwaitinfo NEW: POSIX.1b
1818 sincos NEW: GNU ext.
1819 sincosf NEW: GNU ext.
1820 sincosl NEW: GNU ext.
1824 strcasestr NEW: GNU ext.
1825 strtoimax NEW: ISO C 9x
1826 strtoumax NEW: ISO C 9x
1827 strverscmp NEW: GNU ext.
1828 svcauthdes_stats NEW: Secure RPC
1829 svcunix_create NEW: sunrpc etx
1830 svcunixfd_create NEW: sunrpc ext
1831 swapcontext NEW: Unix98
1832 tcgetsid NEW: Unix98 PTY
1833 tdestroy NEW: GNU ext.
1834 tgamma NEW: ISO C 9x
1835 tgammaf NEW: ISO C 9x
1836 tgammal NEW: ISO C 9x
1840 truncf NEW: ISO C 9x
1841 truncl NEW: ISO C 9x
1843 unlockpt NEW: Unix98 PTY
1844 updwtmpx NEW: Unix98
1845 user2netname NEW: Secure RPC
1846 utmpxname NEW: Unix98
1847 versionsort NEW: GNU ext.
1848 versionsort64 NEW: GNU ext.
1850 wcscasecmp NEW: GNU ext.
1851 wcsncasecmp NEW: GNU ext.
1852 wcsnlen NEW: GNU ext.
1853 wcstoimax NEW: ISO C 9x
1854 wcstoll NEW: ISO C 9x
1855 wcstoull NEW: ISO C 9x
1856 wcstoumax NEW: ISO C 9x
1858 wordexp NEW: POSIX.2
1859 wordfree NEW: POSIX.2
1860 write_profiling REMOVED
1861 xdecrypt NEW: Secure RPC
1862 xdr_authdes_cred NEW: Secure RPC
1863 xdr_authdes_verf NEW: Secure RPC
1864 xdr_cryptkeyarg NEW: Secure RPC
1865 xdr_cryptkeyarg2 NEW: Secure RPC
1866 xdr_cryptkeyres NEW: Secure RPC
1867 xdr_getcredres NEW: Secure RPC
1868 xdr_key_netstarg NEW: Secure RPC
1869 xdr_key_netstres NEW: Secure RPC
1870 xdr_keybuf NEW: Secure RPC
1871 xdr_keystatus NEW: Secure RPC
1872 xdr_netnamestr NEW: Secure RPC
1873 xdr_sizeof NEW: Secure RPC
1874 xdr_unixcred NEW: sunrpc ext
1875 xencrypt NEW: Secure RPC
1876 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1887 * inet_ntoa is thread-safe
1889 * updwtmp is moved from libutil to libc
1891 * rewrite of cbrt function
1893 * update of timezone data
1907 * add atoll function
1909 * fix complex problems in Berkeley DB code
1911 * fix math functions
1915 * fixed lots of header problems (especially Linux/GNU specific)
1917 * dynamic loader preserves all registers
1919 * Roland McGrath provided support for handling of auxiliary objects in
1920 the ELF dynamic loader.
1922 * support for parallel builds is improved
1926 * GNU extensions are no longer declared by default. To enable them you
1927 must define the macro `_GNU_SOURCE' in your program or compile with
1930 * The library has changed from using GNU ld symbol aliases to using weak
1931 symbols where available. The ELF object file format supports weak
1932 symbols; GNU ld also supports weak symbols in the a.out format. (There
1933 is also now support for other GNU ld extensions in ELF. Use the
1934 `--with-elf' option to configure to indicate you have ELF, and
1935 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1936 of many files which contained only symbol aliases, reducing the size of
1937 the source and the compiled library; many other files were renamed to
1938 less cryptic names previously occupied by the symbol alias files.
1939 There is a new header file <elf.h> for programs which operate on
1940 files in the ELF format.
1942 * Converted to Autoconf version 2, so `configure' has more options.
1943 Run `configure --help' to see the details.
1945 * The library can now be configured to build profiling, highly-optimized
1946 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1947 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1948 `configure' enable building these extra libraries. The shared library is
1949 built by default when using both ELF and GNU ld. When shared libraries
1950 are enabled, the new library `-ldl' is available for arbitrary run-time
1951 loading of shared objects; its interface is defined in <dlfcn.h>. The
1952 new header file <link.h> gives access to the internals of the run-time
1953 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1954 application of same name on other systems and it provides information
1955 about dynamically linked binaries.
1957 * The C library now provides the run-time support code for profiling
1958 executables compiled with `-pg'. Programs can control the profiling code
1959 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1960 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1961 the support for this file format was contributed by David Mosberger-Tang.
1963 * The math code has been replaced with a math library based on fdlibm from
1964 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1965 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1966 functions. The math functions now reside in a separate library, so
1967 programs using them will need to use `-lm' their linking commands.
1969 * John C. Bowman contributed optimized ix87 assembler inline functions.
1971 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1972 mechanism similar to that found in Solaris 2. This is now used for the
1973 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1974 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1975 file controls what services are used for each individual database. This
1976 works by loading shared libraries with names specified in `nsswitch.conf',
1977 so service modules can be changed or added at any time without even
1978 relinking any program. Currently there are the file, db, and NIS based
1979 NSS services available.
1981 * The new functions `strtoq' and `strtouq' parse integer values from
1982 strings, like `strtol' and `strtoul', but they return `long long int' and
1983 `unsigned long long int' values, respectively (64-bit quantities).
1985 * The new functions `strtof' and `strtold' parse floating-point values from
1986 strings, like `strtod', but they return `float' and `long double' values,
1987 respectively (on some machines `double' and `long double' are the same).
1989 * Ulrich Drepper has contributed new implementations of the floating-point
1990 printing and reading code used in the `printf' family of functions and
1991 `strtod', `strtof', and `strtold'. These new functions are perfectly
1992 accurate, and much faster than the old ones.
1994 * The implementation of the POSIX locale model was completely rewritten by
1995 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1996 to compile the POSIX locale definition.
1998 * The former dummy implementations of the strcoll and strxfrm function are
1999 now replaced by fully functional code contributed by Ulrich Drepper. The
2000 collation information comes from the POSIX locale definitions.
2002 * The new header <langinfo.h> defines an interface for accessing
2003 various locale-dependent data (using the locale chosen with `setlocale').
2005 * Ulrich Drepper has contributed a new suite of functions for operation on
2006 wide-character and multibyte-character strings, in <wchar.h>;
2007 and classification and case conversion of wide characters, in <wctype.h>.
2008 These new functions are conforming to the ISO C, Amendement 1 specification.
2010 * There is now a second implementation of the standard I/O library available.
2011 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2012 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2014 * You can now use positional parameter specifications in format strings
2015 for the `printf' and `scanf' families of functions. For example,
2016 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2017 ``Number 6, Mr Jones''. This is mainly useful when providing different
2018 format strings for different languages, whose grammars may dictate
2019 different orderings of the values being printed. To support this
2020 feature, the interface for `register_printf_handler' has changed; see
2021 the header file <printf.h> for details.
2023 * The `printf' and `scanf' families of functions now understand a new
2024 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2025 to group numbers as indicated by the locale; for `scanf' and friends, this
2026 says to accept as valid only a number with all the proper grouping
2027 separators in the right places. In the default "C" locale, numbers are
2028 not grouped; but locales for specific countries will define the usual
2029 conventions (i.e. separate thousands with `,' in the US locale).
2031 * The pgrp functions have been regularized, slightly incompatibly but much
2032 less confusingly. The core functions are now `getpgid' and `setpgid',
2033 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2034 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2035 provided for compatibility. There is no longer an incompatible `getpgrp'
2036 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2038 * The new header file <fts.h> and suite of functions simplify programs that
2039 operate on directory trees. This code comes from 4.4 BSD.
2041 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2042 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2043 NSS scheme used in glibc.
2045 * There is a new malloc debugging hook `__memalign_hook'.
2047 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2048 `unsigned int' in <sys/types.h>. These are for compatibility only and
2049 their use is discouraged.
2051 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2052 done differently, so that it works even without GNU ld.
2054 * New function `euidaccess' checks allowed access to a file like `access',
2055 but using the effective IDs instead of the real IDs.
2057 * The time zone data files have been updated for the latest and greatest
2058 local time conventions of the countries of the world.
2060 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2063 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2064 for formatting floating-point numbers. They are provided only for
2065 compatibility; new programs should use `sprintf' instead. There are
2066 also equivalent function for the `long double' floating-point type and
2067 all functions also exist in a reentrant form.
2069 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2070 functions for maintaining the login-record files (primarily of use to
2071 system programs such as `login'), and convenient functions for
2072 allocating and initializing a pseudo-terminal (pty) device.
2074 * Ulrich Drepper has contributed new support for System V style
2075 shared memory and IPC on systems that support it.
2077 * Ulrich Drepper has contributed several miscellaneous new functions found
2078 in System V: The `hsearch' family of functions provide an effective
2079 implementation of hash tables; `a64l' and `l64a' provide a very simple
2080 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2083 * Ulrich Drepper has contributed new reentrant counterparts for the
2084 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2086 * Ulrich Drepper has contributed new, highly-optimized versions of several
2087 string functions for the i486/Pentium family of processors.
2089 * Ulrich Drepper has updated the Linux-specific code, based largely
2090 on work done in Hongjiu Lu's version of GNU libc for Linux.
2091 The GNU library now supports Linux versions 2.0.10 and later,
2092 using the ELF object file format (i[3456]86-*-linux).
2094 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2096 * David Mosberger-Tang and Richard Henderson have ported the C library
2097 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2098 dynamic linking support for ELF/Alpha.
2100 * Richard Henderson contributed several Alpha optimized assembler function
2101 for arithmetic and string handling.
2103 * Ulrich Drepper has contributed a new set of message catalog functions to
2104 support multiple languages using the <libintl.h> interface, for use with
2105 his new package GNU gettext. Translation volunteers have contributed
2106 catalogs of the library's messages in Spanish, German, and Korean.
2108 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2109 program and the `catgets' function for reading the catalog files it
2110 creates. (The <libintl.h> interface is preferred; we include the
2111 <nl_types.h> interface using `catgets' only for source compatibility with
2112 programs already written to use it.)
2114 * New header file <values.h> gives SVID-compatible names for <limits.h>
2117 * Various new macros, declarations, and small header files for compatibility
2120 * New function `group_member' is a convenient way to check if a process has
2121 a given effective group ID.
2123 * When using GCC 2.7 and later, the socket functions are now declared in a
2124 special way so that passing an argument of type `struct sockaddr_in *',
2125 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2126 `struct sockaddr *' type, does not generate a type-clash warning.
2128 * New function `error' declared in header file <error.h> is a convenient
2129 function for printing error messages and optionally exiting; this is the
2130 canonical function used in GNU programs. The new functions `err', `warn',
2131 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2132 doing the same thing.
2134 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2135 POSIX.2 `glob' function to do ~ and {...} expansion.
2137 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2138 `clearenv' which is used in POSIX.9 is also available.
2140 * New function `getsid' returns session ID number on systems that support it.
2142 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2143 files <db.h> and <mpool.h> provide a rich set of functions for several
2144 types of simple databases stored in memory and in files, and <ndbm.h> is
2145 an old `ndbm'-compatible interface using the `db' functions. Link with
2146 `-ldb' to get these functions.
2148 * New macro `strdupa' copies a string like `strdup', but uses local stack
2149 space from `alloca' instead of dynamic heap space from `malloc'.
2151 * New function `strnlen' is like `strlen' but searches only a given maximum
2152 number of characters for the null terminator. `stpncpy', `strndup' and
2153 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2156 * New function `statfs' in header <sys/statfs.h>.
2158 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2159 provide convenient functions for operating on blocks of null-terminated
2162 * A new suite of functions in <utmp.h> handle all the details of reading
2163 and writing the utmp file.
2165 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2168 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2169 completely POSIX compliant and also implemented the extended functionality
2170 to handle alternate digit representation and alternate era date formats.
2172 * Ulrich Drepper provided an implementation of the `strptime' function
2173 defined in XPG4.2 which transforms a string into a `struct tm' value.
2175 * Paul Eggert provided the tzselect shell script as part of the timezone
2176 code. The shell script makes it easy to select the correct timezone
2179 * The implementation of the malloc family of functions is completely replaced
2180 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2181 The implementation uses the mmap function (if available) and it is
2182 optimized for the use in multi threaded programs.
2184 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2185 functions. This new functionality is usable by specifying a special
2186 salt string and it is compatible with implementation on *BSD systems.
2188 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2189 `getsubopt' to handle second level command line options, `bsd_signal'
2190 to access BSD style `signal' functionality, the obsolete `regexp' style
2193 * the `lchown' function is available on system which support this
2196 * The implementation of the shadow password handling function was contributed
2199 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2201 * POSIX.1g support was added. The <sys/select.h> header is available,
2202 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2203 implementation of `getaddrinfo'.
2207 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2209 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2210 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2212 * The new function `daemon' from 4.4 BSD is useful for server programs that
2213 want to put themselves in the background.
2215 * Joel Sherrill has contributed support for several standalone boards that
2216 run without an operating system.
2218 * `printf', `scanf' and friends now accept a `q' type modifier for long
2219 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2221 * All of the code taken from BSD (notably most of the math and networking
2222 routines) has been updated from the BSD 4.4-Lite release.
2224 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2226 * The new functions `getdomainname' and `setdomainname' fetch or change the
2227 YP/NIS domain name. These are system calls which exist on systems which
2230 * The time zone data files have been updated for the latest international
2233 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2234 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2238 * The C library now includes support for Sun RPC, from Sun's free
2239 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2240 are included. (There is still no support for YP.)
2242 * Tom Quinn has contributed a port of the C library to SGI machines running
2243 Irix 4 (mips-sgi-irix4).
2245 * The new `lockf' function is a simplified interface to the locking
2246 facilities of `fcntl', included for compatibility.
2248 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2250 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2252 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2255 * The error message printed by `assert' for a failed assertion now includes
2256 the name of the program (if using GNU ld) and the name of the calling
2257 function (with versions of GCC that support this).
2259 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2261 * The library now includes the <sys/mman.h> header file and memory
2262 management functions `mmap', `munmap', `mprotect', `msync', and
2263 `madvise', on systems that support those facilities.
2265 * The interface for `mcheck' has changed slightly: the function called to
2266 abort the program when an allocation inconsistency is detected now takes
2267 an argument that indicates the type of failure. The new function
2268 `mprobe' lets you request a consistency check for a particular block at
2269 any time (checks are normally done only when you call `free' or `realloc'
2272 * It is now possible to easily cross-compile the C library, building on one
2273 system a library to run on another machine and/or operating system. All
2274 you need to do is set the variable `HOST_CC' in `configparms' to the
2275 native compiler for programs to run on the machine you are building on (a
2276 few generator programs are used on Unix systems); set `CC' to the
2279 * The new function `fexecve' (only implemented on the GNU system) executes
2280 a program file given a file descriptor already open on the file.
2284 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2285 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2287 * You can set the variable `libprefix' in `configparms' to specify a prefix
2288 to be prepended to installed library files; this makes it easy to install
2289 the GNU C library to be linked as `-lgnuc' or whatever.
2291 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2292 copies a limited number of characters from a string, and returns the
2293 address of the last character written.
2295 * You no longer need to check for whether the installed `stddef.h' is
2296 compatible with the GNU C library. configure now checks for you.
2298 * You can now define a per-stream `fileno' function to convert the
2299 stream's cookie into an integral file descriptor.
2301 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2302 allocates zero bytes of storage, and returns a unique pointer which
2303 you can pass to `realloc' or `free'. The behavior is undefined if
2304 you dereference this pointer.
2306 * The C library now runs on Sony NEWS m68k machines running either
2307 NewsOS 3 or NewsOS 4.
2309 * The new `syscall' function is a system-dependent primitive function
2310 for invoking system calls. It has the canonical behavior on Unix
2311 systems, including unreliable return values for some calls (such as
2312 `pipe', `fork' and `getppid').
2314 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2315 to `EAGAIN', which is the preferred name. On systems whose kernels
2316 use two distinct codes, the C library now translates EWOULDBLOCK to
2317 EAGAIN in every system call function.
2321 * The GNU C Library Reference Manual is now distributed with the library.
2322 `make dvi' will produce a DVI file of the printed manual.
2323 `make info' will produce Info files that you can read on line using C-h i
2324 in Emacs or the `info' program.
2325 Please send comments on the manual to bug-glibc-manual@gnu.org.
2327 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2329 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2331 * Jason Merrill has contributed a port to the Sequent Symmetry running
2332 Dynix version 3 (i386-sequent-dynix).
2334 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2335 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2337 * New function `memory_warnings' lets you arrange to get warnings when
2338 malloc is running out of memory to allocate, like Emacs gives you.
2340 * The C library now contains the relocating allocator used in Emacs 19 for
2341 its editing buffers. This allocator (ralloc) minimizes allocation
2342 overhead and fragmentation by moving allocated regions around whenever it
2343 needs to. You always refer to a ralloc'd region with a "handle" (a
2344 pointer to a pointer--an object of type `void **').
2346 * There is a new `printf' format: `%m' gives you the string corresponding
2347 to the error code in `errno'.
2349 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2350 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2351 pass, the `a' modifier says to fill in a `char **' you pass with a
2354 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2355 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2356 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2358 * `mkstemp' is a traditional Unix function to atomically create and open a
2359 uniquely-named temporary file.
2363 * The standard location for the file that says what the local timezone is
2364 has changed again. It is now `/usr/local/etc/localtime' (or more
2365 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2367 * The distribution no longer contains any files with names longer than 14
2370 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2371 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2373 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2377 * The configuration process has changed quite a bit. The `configure'
2378 script is now used just like the configuration scripts for other GNU
2379 packages. The `sysdeps' directory hierarchy is much rearranged.
2380 The file `INSTALL' explains the new scheme in detail.
2382 * The header files no longer need to be processed into ANSI C and
2383 traditional C versions. There is just one set of files to install, and
2384 it will work with ANSI or old C compilers (including `gcc -traditional').
2386 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2387 MIPS DECStation running Ultrix 4.
2389 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2390 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2391 made itself into a shared library.
2393 * Yet further improved support for the i386, running 4.3 BSD-like systems
2394 (such as Mach 3 with the Unix single-server), or System V.
2396 * New function `strncasecmp' to do case-insensitive string comparison
2397 with limited length.
2399 * New function `strsep' is a reentrant alternative to `strtok'.
2401 * New functions `scandir' and `alphasort' for searching directories.
2403 * New function `setenv' is a better interface to `putenv'.
2405 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2406 function for traversing a directory tree.
2408 * The GNU obstack package is now also part of the C library.
2409 The new function `open_obstack_stream' creates a stdio stream that
2410 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2411 formatted output directly to an obstack.
2413 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2414 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2416 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2418 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2419 things to your strings.
2421 * There are some new test programs: test-fseek, testmb, and testrand.
2423 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2424 These ports are not finished, but are a good starting place for really
2425 supporting those systems.
2427 * `/etc/localtime' is now the standard location for the file that says what
2428 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2429 This follows the general principle that `/etc' is the place for all local
2430 configuration files.
2432 * The C library header files now use `extern "C"' when used by the C++
2433 compiler, so the C library should now work with C++ code.
2435 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2436 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2439 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2440 function which uses the `merge sort' algorithm, and is said to be
2441 significantly faster than the old GNU `qsort' function. Merge sort is
2442 now the standard `qsort' function. The new algorithm can require a lot
2443 of temporary storage; so, the old sorting function is called when the
2444 required storage is not available.
2446 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2447 provides the Unix `crypt' function, plus some other entry points.
2449 * The code and header files taken from 4.4 BSD have been updated with the
2450 latest files released from Berkeley.
2452 ----------------------------------------------------------------------
2453 Copyright information:
2455 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2457 Permission is granted to anyone to make or distribute verbatim copies
2458 of this document as received, in any medium, provided that the
2459 copyright notice and this permission notice are preserved,
2460 thus giving the recipient permission to redistribute in turn.
2462 Permission is granted to distribute modified versions
2463 of this document, or of portions of it,
2464 under the above conditions, provided also that they
2465 carry prominent notices stating who last changed them.
2468 version-control: never
git://sourceware.org / glibc.git / blob