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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.
7 \f
8 Version 2.20
10 * The following bugs are resolved with this release:
12 6804, 13347, 14770, 15347, 15514, 15804, 15894, 16002, 16198, 16284,
13 16348, 16349, 16357, 16362, 16447, 16532, 16545, 16574, 16599, 16600,
14 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
15 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16683, 16689, 16695,
16 16701, 16706, 16707, 16712, 16713, 16714, 16731, 16739, 16740, 16743,
17 16758, 16759, 16760, 16770, 16786, 16789, 16799, 16800, 16815, 16824,
18 16831, 16838.
20 * Running the testsuite no longer terminates as soon as a test fails.
21 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
22 with PASS or FAIL lines for individual tests. A summary of the results is
23 printed, including a list of failing lists, and "make check" exits with
24 error status if there were any unexpected failures. "make check
25 stop-on-test-failure=y" may be used to keep the old behavior.
27 * The am33 port, which had not worked for several years, has been removed
28 from ports.
30 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
31 supported; they now act the same as _DEFAULT_SOURCE (but generate a
32 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
33 conflicted with POSIX (support for which was removed in 2.19), the
34 interfaces those macros enabled remain available when compiling with
35 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
36 test macros defined.
37 \f
38 Version 2.19
40 * The following bugs are resolved with this release:
42 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
43 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
44 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
45 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
46 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
47 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
48 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
49 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
50 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
51 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
52 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
53 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
54 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
55 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
56 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
57 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
58 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
59 16431, 16453, 16474, 16506, 16510, 16529
61 * Slovenian translations for glibc messages have been contributed by the
62 Translation Project's Slovenian team of translators.
64 * The public headers no longer use __unused nor __block. This change is to
65 support compiling programs that are derived from BSD sources and use
66 __unused internally, and to support compiling with Clang's -fblock
67 extension which uses __block.
69 * CVE-2012-4412 The strcoll implementation caches indices and rules for
70 large collation sequences to optimize multiple passes. This cache
71 computation may overflow for large collation sequences and may cause a
72 stack or buffer overflow. This is now fixed to use a slower algorithm
73 which does not use a cache if there is an integer overflow.
75 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
76 rules for large collation sequences to optimize multiple passes and falls
77 back to alloca if malloc fails, resulting in a possible stack overflow.
78 The implementation now falls back to an uncached collation sequence lookup
79 if malloc fails.
81 * CVE-2013-4788 The pointer guard used for pointer mangling was not
82 initialized for static applications resulting in the security feature
83 being disabled. The pointer guard is now correctly initialized to a
84 random value for static applications. Existing static applications need
85 to be recompiled to take advantage of the fix (bug 15754).
87 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
88 to the d_name member of struct dirent, or omit the terminating NUL
89 character. (Bugzilla #14699).
91 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
92 aligned_alloc functions could allocate too few bytes or corrupt the
93 heap when passed very large allocation size values (Bugzilla #15855,
94 #15856, #15857).
96 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
97 for AF_INET6 has been fixed (Bugzilla #16072).
99 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
100 pap_CW, quz_PE, the_NP.
102 * Substantially revised locales: gd_GB, ht_HT
104 * The LC_ADDRESS field was updated to support country_car for almost all
105 supported locales.
107 * ISO 1427 definitions were updated.
109 * ISO 3166 definitions were updated.
111 * The localedef utility now supports --big-endian and --little-endian
112 command-line options to generate locales for a different system from that
113 for which the C library was built.
115 * Binary locale files now only depend on the endianness of the system for
116 which they are generated and not on other properties of that system. As a
117 consequence, binary files generated with new localedef may be incompatible
118 with old versions of the GNU C Library, and binary files generated with
119 old localedef may be incompatible with this version of the GNU C Library,
120 in the following circumstances:
122 + Locale files may be incompatible on m68k systems.
124 + Locale archive files (but not separate files for individual locales) may
125 be incompatible on systems where plain "char" is signed.
127 * The configure option --disable-versioning has been removed. Builds with
128 --disable-versioning had not worked for several years.
130 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
131 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
133 * SystemTap probes for malloc have been introduced.
135 * SystemTap probes for slow multiple precision fallback paths of
136 transcendental functions have been introduced.
138 * Support for powerpc64le has been added.
140 * The soft-float powerpc port now supports e500 processors.
142 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
144 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
145 set of header declarations that are enabled by default, even when other
146 feature test macros or compiler options such as -std=c99 would otherwise
147 disable some of those declarations.
149 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
150 conflict with POSIX. The libbsd-compat library (which was a dummy library
151 that did nothing) has also been removed.
153 * Preliminary documentation about Multi-Thread, Async-Signal and
154 Async-Cancel Safety has been added.
156 * Change of ABI data structures for s390 and s390x:
157 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
158 allow for future hardware extensions. All library functions that accept or
159 return these structures were versioned in order to provide backwards
160 compatibility with existing code. However, not all cases can be handled
161 with interface versioning. If an application embeds either structure into
162 another structure and that structure is passed to another compilation unit
163 which expects the newer larger-sized object then any access to the new
164 fields will result in undefined behaviour. Similarly any access to fields
165 that were moved by the enlarging of the structures will cause undefined
166 behaviour. To fix the undefined behaviour all objects that are part of the
167 final in-memory image must agree on the size of structures, and this may
168 require recompilation.
169 \f
170 Version 2.18
172 * The following bugs are resolved with this release:
174 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
175 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
176 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
177 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
178 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
179 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
180 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
181 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
182 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
183 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
184 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
185 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
186 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
187 15759.
189 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
190 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
191 Distributions can re-enable building and using pt_chown via the new configure
192 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
193 considerable security risks and should only be used if the distribution
194 understands and accepts the risks.
196 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
197 #15078).
199 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
200 fixed (Bugzilla #15330).
202 * Add support for calling C++11 thread_local object destructors on thread
203 and program exit. This needs compiler support for offloading C++11
204 destructor calls to glibc.
206 * Improved worst case performance of libm functions with double inputs and
207 output.
209 * Support for priority inherited mutexes in pthread condition variables on
210 non-x86 architectures.
212 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
214 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
216 * Optimized string functions for ARM. Implemented by Will Newton and
217 Richard Henderson.
219 * Optimized libm functions for SPARC. Implemented by David S. Miller.
221 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
222 Richard Henderson.
224 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
225 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
227 * Added a benchmark framework to track performance of functions in glibc.
229 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
230 It is based on draft TS 18661 and currently enabled as a GNU extension.
232 * On Linux, the clock function now uses the clock_gettime system call
233 for improved precision, rather than old times system call.
235 * Added support for version-3 tz format files. This is needed when using
236 the tz database release 2013e or later, and affects a few unusual cases --
237 currently only TZ='America/Godthab' for time stamps after 2037.
239 * Added new API functions pthread_getattr_default_np and
240 pthread_setattr_default_np to get and set the default pthread
241 attributes of a process.
243 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
244 This may improve lock scaling of existing programs on TSX capable systems.
245 When the --enable-lock-elision=yes parameter is specified at configure
246 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
247 mutexes.
249 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
250 availability). Implemented by Ryan S. Arnold.
252 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
253 \f
254 Version 2.17
256 * The following bugs are resolved with this release:
258 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
259 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
260 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
261 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
262 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
263 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
264 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
265 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
266 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
267 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
268 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
269 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
270 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
271 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
272 14879, 14889, 14893, 14898, 14914.
274 * Optimization of memcpy for MIPS.
276 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
277 EMFILE has been fixed (Bugzilla #14889).
279 * The add-on ports collection is now distributed in the "ports" subdirectory
280 of the main GNU C Library distribution, rather than separately.
282 * Port to ARM AArch64 contributed by Linaro.
284 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
285 Optimized versions of memcpy, memset, and memcmp added for System z10 and
286 zEnterprise z196.
287 Implemented by Andreas Krebbel.
289 * The new function secure_getenv allows secure access to the environment,
290 returning NULL if running in a SUID/SGID process. This function replaces
291 the internal function __secure_getenv.
293 * SystemTap static probes have been added into the dynamic linker.
294 Implemented by Gary Benson.
296 * Optimizations of string functions strstr, strcasestr and memmem.
297 Implemented by Maxim Kuvyrkov.
299 * The minimum Linux kernel version that this version of the GNU C Library
300 can be used with is 2.6.16.
302 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
303 powerpc POWER7. Implemented by Will Schmidt.
305 * New configure option --disable-nscd builds the C library such that it
306 never attempts to contact the Name Service Caching Daemon (nscd).
307 New configure option --disable-build-nscd avoids building nscd itself;
308 this is the default if --disable-nscd is used.
310 * Improved support for cross-compilation, including cross-testing and
311 bootstrap builds without a previously built glibc.
313 * Several testsuite tests are now able to test multiple IFUNC variants of an
314 interface, rather than just testing the one that would be chooen by
315 default.
317 * New configure options --with-bugurl and --with-pkgversion, for
318 distributors to use to embed their bug-reporting and package version
319 information in --help and --version output.
321 * The ttyname and ttyname_r functions on Linux now fall back to searching for
322 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
323 allows creation of chroots without the procfs mounted on /proc.
325 * The `crypt' function now fails if passed salt bytes that violate the
326 specification for those values. On Linux, the `crypt' function will
327 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
328 enabled, and fail on encrypted strings using the MD5 or DES algorithm
329 when the mode is enabled.
331 * The `clock_*' suite of functions (declared in <time.h>) is now available
332 directly in the main C library. Previously it was necessary to link with
333 -lrt to use these functions. This change has the effect that a
334 single-threaded program that uses a function such as `clock_gettime' (and
335 is not linked with -lrt) will no longer implicitly load the pthreads
336 library at runtime and so will not suffer the overheads associated with
337 multi-thread support in other code such as the C++ runtime library.
339 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
340 sat_IN, and szl_PL.
341 \f
342 Version 2.16
344 * The following bugs are resolved with this release:
346 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
347 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
348 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
349 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
350 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
351 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
352 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
353 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
354 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
355 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
356 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
357 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
358 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
359 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
360 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
361 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
362 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
363 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
364 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
365 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
366 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
367 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
368 14277, 14278.
370 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
371 configuring glibc with:
372 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
373 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
374 Implemented by H.J. Lu.
376 * ISO C11 support:
378 + define static_assert
380 + do not declare gets
382 + declare at_quick_exit and quick_exit also for ISO C11
384 + aligned_alloc. NB: The code is deliberately allows the size parameter
385 to not be a multiple of the alignment. This is a moronic requirement
386 in the standard but it is only a requirement on the caller, not the
387 implementation.
389 + timespec_get added
391 + uchar.h support added
393 + CMPLX, CMPLXF, CMPLXL added
395 Implemented by Ulrich Drepper.
397 * Support for the IA-64 has been moved to ports.
399 * Remove support for anything but ELF binary format
401 * Checking versions of poll, ppoll added.
402 Implemented by Ulrich Drepper.
404 * More generic and 64-bit performance optimizations to math functions.
405 Implemented by Ulrich Drepper.
407 * New configure option --enable-obsolete-rpc makes the deprecated RPC
408 headers and functions available at compile time as they were before
409 version 2.14. This option will be removed at some time in the future
410 after the TI-RPC library becomes fully sufficient for the needs of
411 existing applications.
413 * Compatibility code for Linux kernel versions before 2.4 has been removed.
414 Note that glibc is not expected to work with any Linux kernel version
415 before 2.6.
417 * New header <sys/auxv.h> and function getauxval allowing easy access to
418 the AT_* key-value pairs passed from the Linux kernel. The header also
419 defines the HWCAP_* bits associated with the AT_HWCAP key.
421 * New locales: mag_IN
423 * New configure option --enable-systemtap builds SystemTap static probes
424 into libc for setjmp and longjmp and into libpthread for various operations.
425 So far the setjmp/longjmp probes and some of the libpthread probes are
426 provided only for i*86 and x86_64.
427 Implemented by Roland McGrath and Rayson Ho.
429 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
431 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
432 and Will Schmidt.
434 * More optimized functions for SPARC. Implemented by David S. Miller.
436 * Improved support for cross-compilation, especially bootstrap builds
437 without a previously built glibc.
439 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
440 Chris Metcalf from Tilera.
442 * Support for the old ARM ABI has been removed from ports. Only the EABI is
443 now supported for ARM processors.
445 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
446 as the name of the dynamic linker, to distinguish it from the
447 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
449 * Support for CRIS has been removed from ports.
451 * A new class of installed header has been documented for low-level
452 platform-specific functionality. PowerPC added the first instance with a
453 function to provide time base register access. Contributed by Tulio
454 Magno Quites Machado Filho.
456 * ix86 configurations now install header files that are consistent with
457 what x86-64 configurations install. These same header files can be used
458 for -m32, -m64, or -mx32 builds.
459 Contributed by H.J. Lu.
461 * Math library bug fixes. A thorough audit of all open math library bugs was
462 conducted by Joseph Myers. Significant progress was made on many math
463 library bugs resulting in more accurate exceptions and function results.
464 Many thanks to all those that contributed including Andreas Jaeger for his
465 patch review and work on the x87 trigonometric instruction issues.
467 * Timezone data is no longer installed. Timezone-related binaries and scripts
468 will continue to be installed. Users should obtain their timezone data from
469 their distribution provider or from the tzdata package at
470 <ftp://munnari.oz.au/pub/>.
471 \f
472 Version 2.15
474 * The following bugs are resolved with this release:
476 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
477 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
478 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
479 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
480 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
481 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
482 13484, 13506, 13515, 13523, 13524, 13538, 13540
484 * New program pldd to list loaded object of a process
485 Implemented by Ulrich Drepper.
487 * Add nss_db support back to glibc. No more dependency on Berkeley db
488 and support for initgroups lookups.
489 Implemented by Ulrich Drepper.
491 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
492 Contributed by HJ Lu.
494 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
495 Contributed by HJ Lu.
497 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
498 on x86-32 and x86-64.
499 Contributed by Liubov Dmitrieva.
501 * Optimized strchr and strrchr for SSE on x86-32.
502 Contributed by Liubov Dmitrieva.
504 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
505 for x86-64 and x86-32.
506 Contributed by Liubov Dmitrieva.
508 * New interfaces: scandirat, scandirat64
509 Implemented by Ulrich Drepper.
511 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
512 Implemented by Ulrich Drepper.
514 * nscd now also caches the netgroup database.
515 Implemented by Ulrich Drepper.
517 * Integrate libm with gcc's -ffinite-math-only option.
518 Implemented by Ulrich Drepper.
520 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
521 to math functions. Implemented by Ulrich Drepper.
523 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
524 Implemented by Ulrich Drepper.
526 * New Linux interfaces: process_vm_readv, process_vm_writev
528 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
529 Implemented by Ulrich Drepper.
531 * Optimized nearbyint and strcasecmp for PPC.
532 Implemented by Adhemerval Zanella.
534 * New locales: bho_IN, unm_US, es_CU, ta_LK
535 \f
536 Version 2.14
538 * The following bugs are resolved with this release:
540 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
541 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
542 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
543 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
544 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
545 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
546 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
547 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
548 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
549 12795, 12811, 12813, 12814, 12841
551 * The RPC implementation in libc is obsoleted. Old programs keep working
552 but new programs cannot be linked with the routines in libc anymore.
553 Programs in need of RPC functionality must be linked against TI-RPC.
554 The TI-RPC implementation is IPv6 enabled and there are other benefits.
556 Visible changes of this change include (obviously) the inability to link
557 programs using RPC functions without referencing the TI-RPC library and the
558 removal of the RPC headers from the glibc headers.
559 Implemented by Ulrich Drepper.
561 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
562 syncfs, setns, sendmmsg
564 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
565 yue_HK, lij_IT, mhr_RU
567 * New encodings: CP770, CP771, CP772, CP773, CP774
569 * New program sotruss to trace calls through PLTs
570 Implemented by Ulrich Drepper.
572 * The malloc hook implementation is marked deprecated and will be removed
573 from the default implementation in the next version. The design never
574 worked ever since the introduction of threads. Even programs which do
575 not create threads themselves can use multiple threads created internally.
576 \f
577 Version 2.13
579 * The following bugs are resolved with this release:
581 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
582 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
583 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
584 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
585 12378, 12394, 12397
587 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
589 * POWER7 optimizations: memset, memcmp, strncmp
591 * New optimized string functions for x86-64: strnlen (SSE2),
592 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
593 Implemented by Ulrich Drepper.
594 \f
595 Version 2.12
597 * The following bugs are resolved with this release:
599 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
600 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
601 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
602 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
603 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
604 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
605 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
606 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
608 * New interfaces: pthread_getname_np, pthread_setname_np
610 * New Linux interface: recvmmsg
612 * STT_GNU_IFUNC implemented for Sparc by David Miller.
614 * The dynamic linker now recognizes supported ABI versions from the
615 EI_ABIVERSION field in the ELF header.
616 Implemented by Ulrich Drepper.
618 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
619 will not be used to fill in password fields in the passwd.byname replies.
620 Instead it is used to synthesize the shadow.byname table, should it be
621 missing. This is a useful mode in some installations involving Solaris.
622 Implemented by Ulrich Drepper.
624 * New locales: kok_IN, sq_MK, cv_RU
625 \f
626 Version 2.11
628 * The following bugs are resolved with this release:
630 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
631 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
632 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
633 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
634 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
635 10789, 10817, 10823, 10840, 10847
637 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
638 mkostemps64
639 Implemented by Ulrich Drepper.
641 * Checking version of longjmp added that fails if an uninitialized stack
642 frame would be created. Implemented by Ulrich Drepper.
644 * STT_GNU_IFUNC is now supported in static executables.
645 Implemented by H.J. Lu.
647 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
649 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
650 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
651 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
652 Contributed by H.J. Lu.
654 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
655 Implemented by Ulrich Drepper.
657 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
658 strstr, strcasestr.
659 Contributed by H.J. Lu.
661 * Support for fma instruction in AVX on x86-64.
662 Implemented by H.J. Lu and Ulrich Drepper.
664 * AVX support in x86-64 auditing support in ld.so.
665 Implemented by H.J. Lu.
667 * STB_GNU_UNIQUE support added.
668 Implemented by Ulrich Drepper.
670 * Implement second fallback mode for optimized DNS lookup for even more
671 broken environments. If two requests from the same port are not
672 handled correctly close the socket and open a new one before sending
673 the second request. The 'single-request-reopen' option in /etc/resolv.conf
674 can be used to select this mode right away, instead of rediscovering the
675 necessity is every process again.
676 Implemented by Ulrich Drepper.
678 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
679 Implemented by Adam Tkac.
681 * Optimized iconv conversions for S390x.
682 Implemented by Andreas Krebbel.
684 * Using condvars with PI mutexes is now more efficient due to kernel
685 support for requeueing to PI futexes. NPTL support added for x86-64.
686 Implemented by Ulrich Drepper.
688 * New locales: ps_AF, my_MM
689 \f
690 Version 2.10
692 * The following bugs are resolved with this release:
694 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
695 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
696 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
697 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
698 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
700 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
701 Implemented by Ulrich Drepper.
703 * New Linux interfaces: accept4, fallocate, fallocate64.
704 Implemented by Ulrich Drepper.
706 * Correct declarations of string function when used in C++ code. This
707 could lead to compile errors for invalid C++ code.
709 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
710 now in POSIX.
712 * New POSIX 2008 interface: psiginfo
713 Implemented by Ulrich Drepper.
715 * New ISO C++1x interfaces: quick_exit, at_quick_exit
716 Implemented by Ulrich Drepper.
718 * Support for selecting between multiple function definitions at runtime
719 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
721 * The libcrypt library can now use the hash function implementations in
722 NSS. Implemented by Ulrich Drepper.
724 * The malloc implementation can be compiled to be less memory efficient
725 but higher performing in multi-threaded programs.
726 Implemented by Ulrich Drepper.
728 * New locales: nan_TW@latin, ks_IN
730 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
731 Implemented by Ulrich Drepper.
733 * Extended printf hook support. It is possible to use user-defined types
734 and extend existing format specifiers.
735 Implemented by Ulrich Drepper.
737 * Handling for group shadow files has been added.
738 Implemented by Ulrich Drepper.
740 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
741 servers (the case, e.g., for some people using the built-in DNS
742 server in ADSL modems/routers). There is a once-per-process timeout
743 in case of a broken server. To avoid it, users can run nscd or put
744 'options single-request' in /etc/resolv.conf.
745 Implemented by Ulrich Drepper.
746 \f
747 Version 2.9
749 * The following bugs are resolved with this release:
751 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
752 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
753 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
754 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
755 6968, 6974, 6980, 6995, 7008, 7009, 7029
757 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
758 up at the same time. Implemented by Ulrich Drepper.
760 * TLS descriptors for LD and GD on x86 and x86-64.
761 Implemented by Alexandre Oliva.
763 * getaddrinfo now handles DCCP and UDPlite.
764 Implemented by Ulrich Drepper.
766 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
767 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
768 Implemented by Ulrich Drepper.
770 * New implementation of memmem, strstr, and strcasestr which is O(n).
771 Implemented by Eric Blake.
773 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
775 * Implement "e" option for popen to open file descriptor with the
776 close-on-exec flag set. Implemented by Ulrich Drepper.
778 * Implement "b" mode for fmemopen. In this mode writes writes don't
779 implicitly add a NUL byte and seeks from the end of the buffer really
780 use the buffer end, not the string length as the basis.
781 Implemented by Ulrich Drepper.
783 * Many functions, exported and internal, now atomically set the close-on-exec
784 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
786 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
787 Sinhala)
788 Implemented by Pravin Satpute.
790 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
791 \f
792 Version 2.8
794 * The following bugs are resolved with this release:
796 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
797 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
798 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
799 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
800 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
801 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
802 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
804 * New locales: bo_CN, bo_IN, shs_CA.
806 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
808 * Sorting rules for some Indian languages (Devanagari and Gujarati).
809 Implemented by Pravin Satpute.
811 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
813 * nscd caches now all timeouts for DNS entries
814 Implemented by Ulrich Drepper.
816 * nscd is more efficient and wakes up less often.
817 Implemented by Ulrich Drepper.
819 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
820 vdprintf, and obstack_vprintf.
821 Implemented by Jakub Jelinek.
823 * Faster memset for x86-64.
824 Implemented by Harsha Jagasia and H.J. Lu.
826 * Faster memcpy on x86.
827 Implemented by Ulrich Drepper.
829 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
830 Implemented by Ulrich Drepper.
832 * Faster sqrt and sqrtf implemention for some PPC variants.
833 Implemented by Steven Munroe.
834 \f
835 Version 2.7
837 * The following bugs are resolved with this release:
839 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
840 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
841 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
842 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
843 5071, 5103, 5104, 5112, 5113, 5184, 5186
845 * More checking functions: fread, fread_unlocked, open*, mq_open.
846 Implemented by Jakub Jelinek and Ulrich Drepper.
848 * Extend fortification to C++. Implemented by Jakub Jelinek.
850 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
851 by not recognizing 'a' as a modifier when those specs are requested.
852 Implemented by Jakub Jelinek.
854 * PPC optimizations to math and string functions.
855 Implemented by Steven Munroe.
857 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
858 options to be passed. Implemented by Ulrich Drepper.
860 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
862 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
863 Implemented by Ulrich Drepper.
865 * Handle private futexes in the NPTL implementation.
866 Implemented by Jakub Jelinek and Ulrich Drepper.
868 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
869 Implemented by Roland McGrath and Ulrich Drepper.
871 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
873 * SHA-256 and SHA-512 based password encryption.
874 Implemented by Ulrich Drepper.
876 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
877 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
878 yo_NG.
880 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
881 Implemented by Ulrich Drepper.
882 \f
883 Version 2.6
885 * The following bugs are resolved with this release:
887 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
888 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
889 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
890 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
891 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
892 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
893 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
894 4702, 4858
896 * New Linux interfaces: epoll_pwait, sched_getcpu.
898 * New generic interfaces: strerror_l.
900 * nscd can now cache the services database. Implemented by Ulrich Drepper.
901 \f
902 Version 2.5
904 * The following bugs are resolved with this release:
906 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
907 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
908 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
909 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
910 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
911 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
912 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
913 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
914 3225, 3251, 3252, 3253, 3273
916 * For Linux, the sorting of addresses returned by getaddrinfo now also
917 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
918 Implemented by Ulrich Drepper.
920 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
921 Implemented by Ulrich Drepper.
923 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
925 * New iconv module for MIK. Contributed by Alexander Shopov.
927 * For sites with broken group and/or passwd database, the auto-propagate
928 option of nscd can prevent creating ID lookup entries from the results
929 of a name lookup and vice versa. This usually is no problem but some
930 site might have problems with the default behavior.
931 Implemented by Ulrich Drepper.
933 * Iterating over entire database in NIS can be slow. With the
934 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
935 to trade time for memory. The entire database will be read at once.
936 Implemented by Ulrich Drepper.
938 * The interfaces introduced in RFC 3542 have been implemented by
939 Ulrich Drepper.
941 * Support for the new ELF hash table format was added by Ulrich Drepper.
943 * Support for priority inheritance mutexes added by Jakub Jelinek and
944 Ulrich Drepper.
946 * Support for priority protected mutexes added by Jakub Jelinek.
948 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
949 or_IN, csb_PL, fy_NL, sr_ME.
950 \f
951 Version 2.4
953 * More overflow detection functions.
955 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
956 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
958 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
959 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
960 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
961 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
962 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
963 by Masahide Washizawa.
965 * It is now possible to install audit libraries for the dynamic linker using
966 LD_AUDIT. Implemented by Ulrich Drepper.
968 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
969 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
970 For a libc and libpthread that works well on Linux 2.4 kernels, we
971 recommend using the stable 2.3 branch.
973 * The new function open_wmemstream acts like open_memstream,
974 but uses a wchar_t wide character buffer.
976 * The new function ppoll is an improved version of poll, similar to pselect.
978 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
979 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
980 renameat, unlinkat, linkat, symlinkat, readlinkat.
982 * New Linux kernel system calls: unshare,
983 inotify_init, inotify_add_watch, inotify_rm_watch.
985 * The euidaccess function is now also known by the alias eaccess,
986 for compatibility with some other systems.
988 * Timezone data updated to 2006b version.
989 \f
990 Version 2.3.6
992 * The following bugs are resolved with this release:
994 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
995 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
996 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
997 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
998 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
999 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1001 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1003 * As of this release, GCC 4 can be used to compile the C Library.
1005 * Timezone data updated to 2005m version.
1006 \f
1007 Version 2.3.5
1009 * The following bugs are resolved with this release:
1011 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1012 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1013 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1014 777, 787, 821, 822, 823, 825
1016 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1017 \f
1018 Version 2.3.4
1020 * Support for RFC 3678. Real implementations exist only for Linux so far.
1021 Implemented by Ulrich Drepper.
1023 * nscd can now cache entries persistently. Expiring entries are reloaded.
1024 For speedups the cache can be shared in memory with client processes.
1025 Implemented by Ulrich Drepper.
1027 * nscd can now perform SELinux checks.
1028 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1030 * getaddrinfo queries are now cached. Canonical name lookup is performed
1031 efficiently.
1032 Implemented by Ulrich Drepper.
1034 * The nothrow function attribute is used when headers are used by gcc when
1035 compiling C code. This can avoid significant amounts of exception
1036 handling data.
1038 * The malloc functions perform more error checking and are stricter when
1039 it comes to reacting on errors. The default action is to terminate
1040 the process after showing an error message. Implemented by Ulrich Drepper.
1042 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1043 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1045 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1046 namespaces using the new function dlmopen(). This feature is of course,
1047 like most other dynamic loading functionality, not available in statically
1048 linked applications. Implemented by Ulrich Drepper.
1050 * Low-overhead boundary checking variants of string and some stdio functions
1051 were added. These are to be used in conjunction with a gcc patch by
1052 Jakub Jelinek which adds calls to these functions if possible.
1053 Implemented by Jakub Jelinek and Ulrich Drepper.
1055 * Old code for several operating systems and machine architectures that
1056 have not been in working condition in a long time have been removed from
1057 the main source tree maintained by the GNU C Library's maintainers.
1058 These files are now reside in the separate `ports' source module
1059 that is usable as an add-on when building the library.
1060 \f
1061 Version 2.3.3
1063 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1064 interrogate the dynamic linker, compatible with the Solaris interface.
1066 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1067 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1069 * getifaddrs now uses the netlink interface on Linux to get its information.
1070 Implemented by Thorsten Kukuk.
1072 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1073 Implemented by Ulrich Drepper.
1075 * support for non-executable stacks on x86 has been added. Changes mostly
1076 by Roland McGrath.
1078 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1079 and Ulrich Drepper.
1081 * getaddrinfo now performs destination address selection according to
1082 RFC 3484.
1083 \f
1084 Version 2.3.2
1086 * Thread-safe interfaces for many functions that access locale data
1087 were added in version 2.3, but these features were omitted from NEWS.
1088 Many functions have variants with an `_l' suffix that take a `locale_t'
1089 object as a parameter rather than consulting the current locale.
1090 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1091 create and maintain `locale_t' objects. Additionally, the new function
1092 `uselocale' sets "the current locale" (as used by functions not so
1093 parameterized) set for an individual thread. These features were added
1094 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1096 * The functions getresuid, getresgid, setresuid, and setresgid, which
1097 have long been available on Linux, are now declared in <unistd.h>
1098 and are now also available on the Hurd.
1100 * ELF thread-local storage support (TLS) now works on x86-64.
1102 * The new dynamic string token $LIB is expanded in shared library names.
1103 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1105 * Aldy Hernandez contributed complete software floating point support for
1106 PowerPC machines with no FPU.
1108 * fexecve is implemented on Linux.
1110 * The `btowc' function should work at least twice as fast due to
1111 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1113 * With approriate thread add-ons cancelable functions are now implemented
1114 in libc.so as well. No need to call the function in libpthread. This
1115 change allowed to finally disable the incorrect and expensive handling
1116 of weak definition in ld.so.
1118 * Yet more PLT entries in libc.so have been removed. We finally arrived
1119 at the bare minimum. Startup times improved appropriately.
1121 * Support for the new Linux/x86 system call interface was added. The
1122 AT_SYSINFO auxiliary vector entry is recognized and handled.
1123 \f
1124 Version 2.3
1126 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1127 charsets.
1129 * iconv (the program and the interface) now accepts empty names (excluding
1130 options like //TRANSLIT) to mean "use charset of current locale".
1132 * localedef can now transliterate characters in strings which are not in
1133 the provided charmap. The information from the input locale is used.
1135 * Prelinking support was added for ELF targets. This requires additional
1136 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1138 * Read-only stdio streams now use mmap to speed up operation by eliminating
1139 copying and buffer underflows. To use add 'm' to the mode string of
1140 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1142 * The malloc functions were completely rewritten by Wolfram Gloger based
1143 on Doug Lea's malloc-2.7.0.c.
1145 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1146 implementation of regex.
1148 * Bruno Haible upgraded the iconv and locale implementation to support
1149 Unicode 3.2.
1151 * Contents of the LC_* and LANG environment variables in the CEN style are
1152 not recognized anymore. It never was used. Change by Ulrich Drepper.
1154 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1155 thread-local storage (TLS) ABI on some platforms.
1156 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1158 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1159 EUC-JISX0213, and TSCII.
1161 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1162 BSD-compatible interface for getting all network interface addresses.
1163 Implementation for IPv4 by Roland McGrath.
1165 * Loading of locale data is faster due to the introduction of a locale
1166 archive. Implemented by Roland McGrath and Ulrich Drepper.
1168 * Startup times are significantly reduced by not using exported functions
1169 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1170 and Ulrich Drepper.
1172 * Steven Munroe contributed a port to PowerPC64/Linux.
1173 \f
1174 Version 2.2.6
1176 * The Hurd now uses the GNU libio implementation of stdio rather than the
1177 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1179 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1180 with the same behavior as the Linux system call of the same name.
1181 \f
1182 Version 2.2.5
1184 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1185 128-bit long double format.
1187 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1188 IBM1161, and IBM1162 charsets.
1190 * Andreas Jaeger contributed a port to x86-64/Linux.
1192 * Peter Bruin contributed a port to PowerPC/Hurd.
1194 * libc functions using I/O streams now can handle wide-oriented streams
1195 as well.
1197 * optimizations in the dynamic linker. Binaries created by recent binutils
1198 versions start up quicker due to reduced time spent on relocations.
1200 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1201 \f
1202 Version 2.2.4
1204 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1205 asinh, atanh, j0 for the 128-bit long double format.
1207 * Bruno Haible updated all the code handling Unicode in some form to
1208 support Unicode 3.1.
1210 * Speed of regex for single-byte locales is back to previous levels.
1211 Patch by Isamu Hasegawa.
1213 * Alpha, SPARC, and IA-64 now also using floating stacks.
1215 * Startup time of internationalized applications greatly improved through
1216 iconv cache. Use iconvconfig to generate the cache file.
1217 Contributed by Ulrich Drepper.
1219 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1220 severe performance problems. Patch by David Mosberger.
1222 * The Hurd port got a lot more functionality like AIO, various stdio
1223 extensions, etc. Mainly done by Roland McGrath.
1225 * mtrace can now lookup symbols in shared libraries.
1226 \f
1227 Version 2.2.3
1229 * Intel's IA-64 math library is largely integrated. It provides fast and
1230 accurate implementatations for most basic and standard math functions
1231 in float, double, and long double format.
1233 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1234 and asin for the 96-bit long double format and asin, log, tan for the
1235 128-bit long double format.
1237 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1238 The basic double functions exist today. Contributed by Abraham Ziv
1239 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1240 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1242 * An asynchronous name lookup library was added. The interface is designed
1243 after POSIX AIO. The proposal was circulated beforehand to get comments.
1244 No negative ones came in. Implemented by Ulrich Drepper.
1246 * Port to S390/64bit contributed by Martin Schwidefsky
1247 <schwidefsky@de.ibm.com>.
1249 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1250 of functions for Linux/IA-64.
1252 * The RPC code is now thread safe. Threads can now use the same service
1253 of different services at the same time. Patch by Eric Norum
1254 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1256 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1257 family of functions for Linux/S390.
1259 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1260 of functions for Linux/x86.
1262 * Port to Linux/CRIS contributed by Axis Communications.
1263 \f
1264 Version 2.2.2
1266 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1267 we can now check for namespace violations and missing declarations. The
1268 result is that almost all headers are now Unix-compliant (as defined in
1269 the upcoming XPG6). The negative side is that some programs might need
1270 corrections, too, if they depend on the incorrect form of the headers in
1271 previous versions which defined too many symbols and included too many
1272 other headers.
1274 * regex now handles multibyte character sets correctly.
1275 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1277 * iconv (the program) does now conform to the upcoming XPG6 and handles
1278 charmaps. Instead of the charset names the path of charmaps can be
1279 provided and the conversion happens based on this data.
1280 Contributed by Ulrich Drepper.
1282 * The locale program now provides detailed information about the installed
1283 locales. While
1285 locale -a
1287 only lists the names of the supported locales
1289 locale -a --verbose
1291 provides details such as country, language, and codeset name.
1292 Contributed by Ulrich Drepper.
1293 \f
1294 Version 2.2.1
1296 * The gencat program now parses the input file according to the charset
1297 selected by the LC_CTYPE category. This is important for stateful
1298 character sets. To make generating catalogs easier there is a way
1299 to overwrite the charset selected by the locale: before the first
1300 message or $ quote line the catalog can contain a line like
1302 $ codeset=ISO-8859-2
1304 to select the charset (ISO-8859-2 in this case).
1306 Implemented by Shinya Hanataka and Ulrich Drepper.
1308 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1309 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1310 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1312 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1313 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1315 * The LANGUAGE environment variable is now ignored unless the locale is
1316 changed from the default "C" locale.
1318 * The usual bug fixes.
1319 \f
1320 Version 2.2
1322 * Greg McGary added runtime support for bounds checking using gcc's
1323 new -fbounded-pointers option. ix86 target is complete. PowerPC
1324 is in progress.
1326 * Thorsten Kukuk added secure mode support to nscd.
1328 * The Berkeley db libraries have been removed.
1330 Related, the nss_db module is now in a separate package since it
1331 obviously requires a database library being available.
1333 * Wide character I/O streams implemented by Ulrich Drepper.
1335 * Functions from the extended socket API added by Ulrich Drepper.
1337 * Functions feenableexcept and fedisableexcept to control the
1338 behaviour of individual exceptions have been added by Andreas Jaeger.
1340 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1342 * The resolver code has been updated from bind 8.2.3-T5B which supports
1343 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1344 and Mark Kettenis.
1346 This change could in some situations effect backward compatibility. Since
1347 now `_res' is a thread-local instead of a global variable, modifying it
1348 in one thread does not have any effect in other threads.
1350 The resolver library was also extended to allow IPv6 as the transport
1351 protocol for the requests. This work was done by Stig Venaas.
1353 * Compatibility code for K&R C compilers has been removed from the
1354 header files. A ISO C compiler is needed to use the library
1355 (conforming to either C89 or C99 standard).
1357 * Complete rewrite of the localedef program to support multibyte character
1358 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1359 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1360 Implemented by Ulrich Drepper.
1362 Bruno Haible significantly improved the generation and use of the data
1363 structures for the wide character tables.
1365 * Plural handling in gettext implemented by Ulrich Drepper.
1367 * The utmp daemon has been removed.
1369 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1371 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1372 and Yutaka Niibe.
1374 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1376 * POSIX barriers implemented by Kaz Kylheku.
1378 * POSIX spawn function family implemented by Ulrich Drepper.
1380 * POSIX spinlocks are now available.
1382 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1384 * the configure option --enable-kernel=X.Y.Z allows to strip out
1385 compatibility for kernel versions before X.Y.Z. This is currently only
1386 implemented for Linux.
1388 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1389 field sin6_scope_id. This means that all programs using IPv6 should be
1390 recompiled. Don't expect binary compatibility with previous glibc
1391 versions.
1393 * various conversion modules for IBM character sets contributed by
1394 Masahide Washizawa.
1396 * IA-64 port by Jes Sorensen and HJ Lu.
1397 \f
1398 Version 2.1.3
1400 * bug fixes
1402 \f
1403 Version 2.1.2
1405 * bug fixes
1407 \f
1408 Version 2.1.1
1410 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1412 * New xdr functions are added; some rpc functions are now 64bit clean.
1414 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1416 * Fixed known incompatibilities with glibc 2.0.
1418 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1420 * Optimized a number of functions (especially the ELF dynamic loader).
1422 * Update timezone data files.
1424 * lots of charmaps corrections
1426 * some new locale definitions and charmaps
1428 \f
1429 Version 2.1
1431 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1432 conform to POSIX member type requirements. Symbol versions have been
1433 adjusted as needed within the library, and for direct use by applications,
1434 but there is potential for problems if third-party libraries use
1435 struct timeval as part of their interface. This does not present
1436 a problem for X and other "essential" system libraries.
1438 * An additional locale model to support C++ Standard Library locale
1439 model and probably more was implemented by Ulrich Drepper.
1441 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1442 symbol level.
1444 * Miles Bader provided the `argp' function family to support hierachical
1445 command line argument parsing, layered on top of getopt.
1447 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1449 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1450 numbers.
1452 * scanf recognizes the %a and %A format for scanning floating point numbers.
1454 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1455 information and interfaces for the available integer types.
1457 * about 130 new math functions were added to implement the ISO C9x math
1458 library.
1460 * the new header <complex.h> contains definitions of the complex math
1461 functions from ISO C 9X.
1463 * the new header <tgmath.h> defines generic macros to use complex or
1464 real valued functions.
1466 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1468 * Andreas Jaeger provided a test suite for the math library.
1470 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1472 * Ulrich Drepper added character set conversion functions (iconv).
1474 * Optimized string functions have been added.
1476 * The localedata addon is now part of glibc.
1478 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1480 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1481 daemon for NSS (nscd).
1483 Missing a better place here are some numbers on improvements. Under
1484 Linux 2.1.125 un-tar-ing the kernel sources takes
1486 user system wall
1488 using local files 12.19s 6.88s 22.91s
1490 using NIS 13.92s 8.91s 26.34s
1492 using NIS & nscd 10.37s 7.34s 25.30s
1494 using NIS+ 27.57s 30.37s 640.46s
1496 using NIS+ & nscd 10.25s 7.83s 26.51s
1498 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1500 Keep in mind that non-namelookup related operations dominate above times.
1501 It was just a common complain that using NIS+ unpacking the kernel is
1502 horribly slow.
1504 [1] The old nscd implementation is not available anymore since it was
1505 distributed with glibc up to version 2.0.98 and thus is now replaced.
1507 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1509 * Mark Kettenis provided a Hesiod NSS module.
1511 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1512 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1514 * rcmd can now handle netgroups (Dick Streefland).
1516 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1517 Bambrough.
1519 * Support for the IPv6 protocol has been added to the socket API, as per the
1520 latest draft standards.
1522 * Support for Linux 2.2 has been added.
1524 * Interface changes relative to the latest 2.0.x release:
1525 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1526 addseverity NEW: Unix98
1527 alphasort64 NEW: LFS
1528 argp_err_exit_status NEW: argp, GNU ext
1529 argp_error NEW: argp, GNU ext
1530 argp_failure NEW: argp, GNU ext
1531 argp_help NEW: argp, GNU ext
1532 argp_parse NEW: argp, GNU ext
1533 argp_program_bug_address NEW: argp, GNU ext
1534 argp_program_version NEW: argp, GNU ext
1535 argp_program_version_hook NEW: argp, GNU ext
1536 argp_state_help NEW: argp, GNU ext
1537 argp_usage NEW: argp, GNU ext
1538 authdes_create NEW: Secure RPC
1539 authdes_getucred NEW: Secure RPC
1540 authdes_pk_create NEW: Secure RPC
1541 backtrace NEW: GNU ext.
1542 backtrace_symbols NEW: GNU ext.
1543 backtrace_symbols_fd NEW: GNU ext.
1544 cacos NEW: ISO C 9x
1545 cacosf NEW: ISO C 9x
1546 cacosh NEW: ISO C 9x
1547 cacoshf NEW: ISO C 9x
1548 cacoshl NEW: ISO C 9x
1549 cacosl NEW: ISO C 9x
1550 capget NEW: kernel
1551 capset NEW: kernel
1552 carg NEW: ISO C 9x
1553 cargf NEW: ISO C 9x
1554 cargl NEW: ISO C 9x
1555 casin NEW: ISO C 9x
1556 casinf NEW: ISO C 9x
1557 casinh NEW: ISO C 9x
1558 casinhf NEW: ISO C 9x
1559 casinhl NEW: ISO C 9x
1560 casinl NEW: ISO C 9x
1561 catan NEW: ISO C 9x
1562 catanf NEW: ISO C 9x
1563 catanh NEW: ISO C 9x
1564 catanhf NEW: ISO C 9x
1565 catanhl NEW: ISO C 9x
1566 catanl NEW: ISO C 9x
1567 cbc_crypt NEW: Secure RPC
1568 ccos NEW: ISO C 9x
1569 ccosf NEW: ISO C 9x
1570 ccosh NEW: ISO C 9x
1571 ccoshf NEW: ISO C 9x
1572 ccoshl NEW: ISO C 9x
1573 ccosl NEW: ISO C 9x
1574 cexp NEW: ISO C 9x
1575 cexpf NEW: ISO C 9x
1576 cexpl NEW: ISO C 9x
1577 cimag NEW: ISO C 9x
1578 cimagf NEW: ISO C 9x
1579 cimagl NEW: ISO C 9x
1580 clearerr_locked REMOVED
1581 clntunix_create NEW: sunrpc ext
1582 clog NEW: ISO C 9x
1583 clog10 NEW: ISO C 9x
1584 clog10f NEW: ISO C 9x
1585 clog10l NEW: ISO C 9x
1586 clogf NEW: ISO C 9x
1587 clogl NEW: ISO C 9x
1588 conj NEW: ISO C 9x
1589 conjf NEW: ISO C 9x
1590 conjl NEW: ISO C 9x
1591 cpow NEW: ISO C 9x
1592 cpowf NEW: ISO C 9x
1593 cpowl NEW: ISO C 9x
1594 cproj NEW: ISO C 9x
1595 cprojf NEW: ISO C 9x
1596 cprojl NEW: ISO C 9x
1597 creal NEW: ISO C 9x
1598 crealf NEW: ISO C 9x
1599 creall NEW: ISO C 9x
1600 creat64 NEW: LFS
1601 csin NEW: ISO C 9x
1602 csinf NEW: ISO C 9x
1603 csinh NEW: ISO C 9x
1604 csinhf NEW: ISO C 9x
1605 csinhl NEW: ISO C 9x
1606 csinl NEW: ISO C 9x
1607 csqrt NEW: ISO C 9x
1608 csqrtf NEW: ISO C 9x
1609 csqrtl NEW: ISO C 9x
1610 ctan NEW: ISO C 9x
1611 ctanf NEW: ISO C 9x
1612 ctanh NEW: ISO C 9x
1613 ctanhf NEW: ISO C 9x
1614 ctanhl NEW: ISO C 9x
1615 ctanl NEW: ISO C 9x
1616 des_setparity NEW: Secure RPC
1617 ecb_crypt NEW: Secure RPC
1618 endutxent NEW: Unix98
1619 exp10 NEW: ISO C 9x
1620 exp10f NEW: ISO C 9x
1621 exp10l NEW: ISO C 9x
1622 exp2 NEW: ISO C 9x
1623 exp2f NEW: ISO C 9x
1624 exp2l NEW: ISO C 9x
1625 fattach NEW: STREAMS
1626 fdetach NEW: STREAMS
1627 fdim NEW: ISO C 9x
1628 fdimf NEW: ISO C 9x
1629 fdiml NEW: ISO C 9x
1630 feclearexcept NEW: ISO C 9x
1631 fegetenv NEW: ISO C 9x
1632 fegetexceptflag NEW: ISO C 9x
1633 fegetround NEW: ISO C 9x
1634 feholdexcept NEW: ISO C 9x
1635 feof_locked REMOVED
1636 feraiseexcept NEW: ISO C 9x
1637 ferror_locked REMOVED
1638 fesetenv NEW: ISO C 9x
1639 fesetexceptflag NEW: ISO C 9x
1640 fesetround NEW: ISO C 9x
1641 fetestexcept NEW: ISO C 9x
1642 feupdateenv NEW: ISO C 9x
1643 fflush_locked REMOVED
1644 ffsl NEW: GNU ext.
1645 ffsll NEW: GNU ext.
1646 fgetpos64 NEW: LFS
1647 fgets_unlocked NEW: GNU ext.
1648 fileno_locked REMOVED
1649 fma NEW: ISO C 9x
1650 fmaf NEW: ISO C 9x
1651 fmal NEW: ISO C 9x
1652 fmax NEW: ISO C 9x
1653 fmaxf NEW: ISO C 9x
1654 fmaxl NEW: ISO C 9x
1655 fmin NEW: ISO C 9x
1656 fminf NEW: ISO C 9x
1657 fminl NEW: ISO C 9x
1658 fmtmsg NEW: Unix98
1659 fopen64 NEW: LFS
1660 fputc_locked REMOVED
1661 fputs_unlocked NEW: GNU ext.
1662 fread_unlocked NEW: GNU ext.
1663 freopen64 NEW: LFS
1664 fseeko NEW: Unix98
1665 fsetpos64 NEW: LFS
1666 fstatfs64 NEW: LFS
1667 fstatvfs NEW: Unix98
1668 fstatvfs64 NEW: LFS
1669 ftello NEW: Unix98
1670 ftello64 NEW: LFS
1671 ftruncate64 NEW: LFS
1672 ftw64 NEW: LFS
1673 fwrite_unlocked NEW: GNU ext.
1674 gai_strerror NEW: IPv6
1675 gamma_r REMOVED
1676 gammaf_r REMOVED
1677 gammal_r REMOVED
1678 getchar_locked REMOVED
1679 getdate NEW: Unix98
1680 getdate_err NEW: Unix98
1681 getdate_r NEW: GNU ext.
1682 getmsg NEW: STREAMS
1683 getnameinfo NEW: IPv6
1684 getnetname NEW: Secure RPC
1685 getpmsg NEW: STREAMS
1686 getpt NEW: Unix98 PTY
1687 getrlimit64 NEW: LFS
1688 getutxent NEW: Unix98
1689 getutxid NEW: Unix98
1690 getutxline NEW: Unix98
1691 glob64 NEW: GNU ext.
1692 globfree64 NEW: GNU ext.
1693 gnu_get_libc_release NEW: GNU ext.
1694 gnu_get_libc_version NEW: GNU ext.
1695 grantpt NEW: Unix98 PTY
1696 host2netname NEW: Secure RPC
1697 iconv NEW: iconv
1698 iconv_close NEW: iconv
1699 iconv_open NEW: iconv
1700 if_freenameindex NEW: IPv6
1701 if_indextoname NEW: IPv6
1702 if_nameindex NEW: IPv6
1703 if_nametoindex NEW: IPv6
1704 in6addr_any NEW: IPv6
1705 in6addr_loopback NEW: IPv6
1706 inet6_isipv4mapped NEW: IPv6
1707 isastream NEW: STREAMS
1708 iswblank NEW: GNU ext.
1709 key_decryptsession NEW: Secure RPC
1710 key_decryptsession_pk NEW: Secure RPC
1711 key_encryptsession NEW: Secure RPC
1712 key_encryptsession_pk NEW: Secure RPC
1713 key_gendes NEW: Secure RPC
1714 key_get_conv NEW: Secure RPC
1715 key_secretkey_is_set NEW: Secure RPC
1716 key_setnet NEW: Secure RPC
1717 key_setsecret NEW: Secure RPC
1718 llrint NEW: ISO C 9x
1719 llrintf NEW: ISO C 9x
1720 llrintl NEW: ISO C 9x
1721 llround NEW: ISO C 9x
1722 llroundf NEW: ISO C 9x
1723 llroundl NEW: ISO C 9x
1724 log2 NEW: ISO C 9x
1725 log2f NEW: ISO C 9x
1726 log2l NEW: ISO C 9x
1727 lrint NEW: ISO C 9x
1728 lrintf NEW: ISO C 9x
1729 lrintl NEW: ISO C 9x
1730 lround NEW: ISO C 9x
1731 lroundf NEW: ISO C 9x
1732 lroundl NEW: ISO C 9x
1733 lseek64 NEW: LFS
1734 makecontext NEW: Unix98
1735 mempcpy NEW: GNU ext.
1736 mmap64 NEW: LFS
1737 moncontrol REMOVED
1738 modify_ldt NEW: kernel
1739 nan NEW: ISO C 9x
1740 nanf NEW: ISO C 9x
1741 nanl NEW: ISO C 9x
1742 nearbyint NEW: ISO C 9x
1743 nearbyintf NEW: ISO C 9x
1744 nearbyintl NEW: ISO C 9x
1745 netname2host NEW: Secure RPC
1746 netname2user NEW: Secure RPC
1747 nexttoward NEW: ISO C 9x
1748 nexttowardf NEW: ISO C 9x
1749 nexttowardl NEW: ISO C 9x
1750 nftw NEW: Unix98
1751 nftw64 NEW: LFS
1752 open64 NEW: LFS
1753 passwd2des NEW: Secure RPC
1754 pow10 NEW: GNU ext.
1755 pow10f NEW: GNU ext.
1756 pow10l NEW: GNU ext.
1757 pread NEW: Unix98
1758 pread64 NEW: LFS
1759 printf_size NEW: GNU ext.
1760 printf_size_info NEW: GNU ext.
1761 profil_counter REMOVED
1762 pthread_mutexattr_getkind_np REPLACED
1763 pthread_mutexattr_setkind_np REPLACED
1764 ptsname NEW: Unix98 PTY
1765 ptsname_r NEW: Unix98 PTY
1766 putc_locked REMOVED
1767 putchar_locked REMOVED
1768 putgrent NEW: GNU ext.
1769 putmsg NEW: STREAMS
1770 putpmsg NEW: STREAMS
1771 pututxline NEW: Unix98
1772 pwrite NEW: Unix98
1773 pwrite64 NEW: LFS
1774 readdir64 NEW: LFS
1775 readdir64_r NEW: LFS
1776 remquo NEW: ISO C 9x
1777 remquof NEW: ISO C 9x
1778 remquol NEW: ISO C 9x
1779 round NEW: ISO C 9x
1780 roundf NEW: ISO C 9x
1781 roundl NEW: ISO C 9x
1782 rtime NEW: GNU ext.
1783 scalbln NEW: ISO C 9x
1784 scalblnf NEW: ISO C 9x
1785 scalblnl NEW: ISO C 9x
1786 scandir64 NEW: LFS
1787 sendfile NEW: kernel
1788 setcontext NEW: Unix98
1789 setrlimit64 NEW: LFS
1790 setutxent NEW: Unix98
1791 sighold NEW: Unix98
1792 sigignore NEW: Unix98
1793 sigqueue NEW: POSIX.1b
1794 sigrelse NEW: Unix98
1795 sigset NEW: POSIX.1b
1796 sigtimedwait NEW: POSIX.1b
1797 sigwaitinfo NEW: POSIX.1b
1798 sincos NEW: GNU ext.
1799 sincosf NEW: GNU ext.
1800 sincosl NEW: GNU ext.
1801 statfs64 NEW: LFS
1802 statvfs NEW: Unix98
1803 statvfs64 NEW: LFS
1804 strcasestr NEW: GNU ext.
1805 strtoimax NEW: ISO C 9x
1806 strtoumax NEW: ISO C 9x
1807 strverscmp NEW: GNU ext.
1808 svcauthdes_stats NEW: Secure RPC
1809 svcunix_create NEW: sunrpc etx
1810 svcunixfd_create NEW: sunrpc ext
1811 swapcontext NEW: Unix98
1812 tcgetsid NEW: Unix98 PTY
1813 tdestroy NEW: GNU ext.
1814 tgamma NEW: ISO C 9x
1815 tgammaf NEW: ISO C 9x
1816 tgammal NEW: ISO C 9x
1817 tmpfile64 NEW: LFS
1818 trunc NEW: ISO C 9x
1819 truncate64 NEW: LFS
1820 truncf NEW: ISO C 9x
1821 truncl NEW: ISO C 9x
1822 umount2 NEW: kernel
1823 unlockpt NEW: Unix98 PTY
1824 updwtmpx NEW: Unix98
1825 user2netname NEW: Secure RPC
1826 utmpxname NEW: Unix98
1827 versionsort NEW: GNU ext.
1828 versionsort64 NEW: GNU ext.
1829 waitid NEW: Unix98
1830 wcscasecmp NEW: GNU ext.
1831 wcsncasecmp NEW: GNU ext.
1832 wcsnlen NEW: GNU ext.
1833 wcstoimax NEW: ISO C 9x
1834 wcstoll NEW: ISO C 9x
1835 wcstoull NEW: ISO C 9x
1836 wcstoumax NEW: ISO C 9x
1837 wcswcs NEW: Unix98
1838 wordexp NEW: POSIX.2
1839 wordfree NEW: POSIX.2
1840 write_profiling REMOVED
1841 xdecrypt NEW: Secure RPC
1842 xdr_authdes_cred NEW: Secure RPC
1843 xdr_authdes_verf NEW: Secure RPC
1844 xdr_cryptkeyarg NEW: Secure RPC
1845 xdr_cryptkeyarg2 NEW: Secure RPC
1846 xdr_cryptkeyres NEW: Secure RPC
1847 xdr_getcredres NEW: Secure RPC
1848 xdr_key_netstarg NEW: Secure RPC
1849 xdr_key_netstres NEW: Secure RPC
1850 xdr_keybuf NEW: Secure RPC
1851 xdr_keystatus NEW: Secure RPC
1852 xdr_netnamestr NEW: Secure RPC
1853 xdr_sizeof NEW: Secure RPC
1854 xdr_unixcred NEW: sunrpc ext
1855 xencrypt NEW: Secure RPC
1856 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1857 \f
1858 Version 2.0.6
1860 * more bug fixes
1862 \f
1863 Version 2.0.5
1865 * more bug fixes
1867 * inet_ntoa is thread-safe
1869 * updwtmp is moved from libutil to libc
1871 * rewrite of cbrt function
1873 * update of timezone data
1874 \f
1875 Version 2.0.4
1877 * more bug fixes
1878 \f
1879 Version 2.0.3
1881 * more bug fixes
1882 \f
1883 Version 2.0.2
1885 * more bug fixes
1887 * add atoll function
1889 * fix complex problems in Berkeley DB code
1891 * fix math functions
1892 \f
1893 Version 2.0.1
1895 * fixed lots of header problems (especially Linux/GNU specific)
1897 * dynamic loader preserves all registers
1899 * Roland McGrath provided support for handling of auxiliary objects in
1900 the ELF dynamic loader.
1902 * support for parallel builds is improved
1903 \f
1904 Version 2.0
1906 * GNU extensions are no longer declared by default. To enable them you
1907 must define the macro `_GNU_SOURCE' in your program or compile with
1908 `-D_GNU_SOURCE'.
1910 * The library has changed from using GNU ld symbol aliases to using weak
1911 symbols where available. The ELF object file format supports weak
1912 symbols; GNU ld also supports weak symbols in the a.out format. (There
1913 is also now support for other GNU ld extensions in ELF. Use the
1914 `--with-elf' option to configure to indicate you have ELF, and
1915 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1916 of many files which contained only symbol aliases, reducing the size of
1917 the source and the compiled library; many other files were renamed to
1918 less cryptic names previously occupied by the symbol alias files.
1919 There is a new header file <elf.h> for programs which operate on
1920 files in the ELF format.
1922 * Converted to Autoconf version 2, so `configure' has more options.
1923 Run `configure --help' to see the details.
1925 * The library can now be configured to build profiling, highly-optimized
1926 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1927 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1928 `configure' enable building these extra libraries. The shared library is
1929 built by default when using both ELF and GNU ld. When shared libraries
1930 are enabled, the new library `-ldl' is available for arbitrary run-time
1931 loading of shared objects; its interface is defined in <dlfcn.h>. The
1932 new header file <link.h> gives access to the internals of the run-time
1933 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1934 application of same name on other systems and it provides information
1935 about dynamically linked binaries.
1937 * The C library now provides the run-time support code for profiling
1938 executables compiled with `-pg'. Programs can control the profiling code
1939 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1940 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1941 the support for this file format was contributed by David Mosberger-Tang.
1943 * The math code has been replaced with a math library based on fdlibm from
1944 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1945 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1946 functions. The math functions now reside in a separate library, so
1947 programs using them will need to use `-lm' their linking commands.
1949 * John C. Bowman contributed optimized ix87 assembler inline functions.
1951 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1952 mechanism similar to that found in Solaris 2. This is now used for the
1953 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1954 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1955 file controls what services are used for each individual database. This
1956 works by loading shared libraries with names specified in `nsswitch.conf',
1957 so service modules can be changed or added at any time without even
1958 relinking any program. Currently there are the file, db, and NIS based
1959 NSS services available.
1961 * The new functions `strtoq' and `strtouq' parse integer values from
1962 strings, like `strtol' and `strtoul', but they return `long long int' and
1963 `unsigned long long int' values, respectively (64-bit quantities).
1965 * The new functions `strtof' and `strtold' parse floating-point values from
1966 strings, like `strtod', but they return `float' and `long double' values,
1967 respectively (on some machines `double' and `long double' are the same).
1969 * Ulrich Drepper has contributed new implementations of the floating-point
1970 printing and reading code used in the `printf' family of functions and
1971 `strtod', `strtof', and `strtold'. These new functions are perfectly
1972 accurate, and much faster than the old ones.
1974 * The implementation of the POSIX locale model was completely rewritten by
1975 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1976 to compile the POSIX locale definition.
1978 * The former dummy implementations of the strcoll and strxfrm function are
1979 now replaced by fully functional code contributed by Ulrich Drepper. The
1980 collation information comes from the POSIX locale definitions.
1982 * The new header <langinfo.h> defines an interface for accessing
1983 various locale-dependent data (using the locale chosen with `setlocale').
1985 * Ulrich Drepper has contributed a new suite of functions for operation on
1986 wide-character and multibyte-character strings, in <wchar.h>;
1987 and classification and case conversion of wide characters, in <wctype.h>.
1988 These new functions are conforming to the ISO C, Amendement 1 specification.
1990 * There is now a second implementation of the standard I/O library available.
1991 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1992 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1994 * You can now use positional parameter specifications in format strings
1995 for the `printf' and `scanf' families of functions. For example,
1996 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1997 ``Number 6, Mr Jones''. This is mainly useful when providing different
1998 format strings for different languages, whose grammars may dictate
1999 different orderings of the values being printed. To support this
2000 feature, the interface for `register_printf_handler' has changed; see
2001 the header file <printf.h> for details.
2003 * The `printf' and `scanf' families of functions now understand a new
2004 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2005 to group numbers as indicated by the locale; for `scanf' and friends, this
2006 says to accept as valid only a number with all the proper grouping
2007 separators in the right places. In the default "C" locale, numbers are
2008 not grouped; but locales for specific countries will define the usual
2009 conventions (i.e. separate thousands with `,' in the US locale).
2011 * The pgrp functions have been regularized, slightly incompatibly but much
2012 less confusingly. The core functions are now `getpgid' and `setpgid',
2013 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2014 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2015 provided for compatibility. There is no longer an incompatible `getpgrp'
2016 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2018 * The new header file <fts.h> and suite of functions simplify programs that
2019 operate on directory trees. This code comes from 4.4 BSD.
2021 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2022 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2023 NSS scheme used in glibc.
2025 * There is a new malloc debugging hook `__memalign_hook'.
2027 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2028 `unsigned int' in <sys/types.h>. These are for compatibility only and
2029 their use is discouraged.
2031 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2032 done differently, so that it works even without GNU ld.
2034 * New function `euidaccess' checks allowed access to a file like `access',
2035 but using the effective IDs instead of the real IDs.
2037 * The time zone data files have been updated for the latest and greatest
2038 local time conventions of the countries of the world.
2040 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2041 see <dirent.h>.
2043 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2044 for formatting floating-point numbers. They are provided only for
2045 compatibility; new programs should use `sprintf' instead. There are
2046 also equivalent function for the `long double' floating-point type and
2047 all functions also exist in a reentrant form.
2049 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2050 functions for maintaining the login-record files (primarily of use to
2051 system programs such as `login'), and convenient functions for
2052 allocating and initializing a pseudo-terminal (pty) device.
2054 * Ulrich Drepper has contributed new support for System V style
2055 shared memory and IPC on systems that support it.
2057 * Ulrich Drepper has contributed several miscellaneous new functions found
2058 in System V: The `hsearch' family of functions provide an effective
2059 implementation of hash tables; `a64l' and `l64a' provide a very simple
2060 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2061 number generator.
2063 * Ulrich Drepper has contributed new reentrant counterparts for the
2064 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2066 * Ulrich Drepper has contributed new, highly-optimized versions of several
2067 string functions for the i486/Pentium family of processors.
2069 * Ulrich Drepper has updated the Linux-specific code, based largely
2070 on work done in Hongjiu Lu's version of GNU libc for Linux.
2071 The GNU library now supports Linux versions 2.0.10 and later,
2072 using the ELF object file format (i[3456]86-*-linux).
2074 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2076 * David Mosberger-Tang and Richard Henderson have ported the C library
2077 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2078 dynamic linking support for ELF/Alpha.
2080 * Richard Henderson contributed several Alpha optimized assembler function
2081 for arithmetic and string handling.
2083 * Ulrich Drepper has contributed a new set of message catalog functions to
2084 support multiple languages using the <libintl.h> interface, for use with
2085 his new package GNU gettext. Translation volunteers have contributed
2086 catalogs of the library's messages in Spanish, German, and Korean.
2088 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2089 program and the `catgets' function for reading the catalog files it
2090 creates. (The <libintl.h> interface is preferred; we include the
2091 <nl_types.h> interface using `catgets' only for source compatibility with
2092 programs already written to use it.)
2094 * New header file <values.h> gives SVID-compatible names for <limits.h>
2095 constants.
2097 * Various new macros, declarations, and small header files for compatibility
2098 with 4.4 BSD.
2100 * New function `group_member' is a convenient way to check if a process has
2101 a given effective group ID.
2103 * When using GCC 2.7 and later, the socket functions are now declared in a
2104 special way so that passing an argument of type `struct sockaddr_in *',
2105 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2106 `struct sockaddr *' type, does not generate a type-clash warning.
2108 * New function `error' declared in header file <error.h> is a convenient
2109 function for printing error messages and optionally exiting; this is the
2110 canonical function used in GNU programs. The new functions `err', `warn',
2111 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2112 doing the same thing.
2114 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2115 POSIX.2 `glob' function to do ~ and {...} expansion.
2117 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2118 `clearenv' which is used in POSIX.9 is also available.
2120 * New function `getsid' returns session ID number on systems that support it.
2122 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2123 files <db.h> and <mpool.h> provide a rich set of functions for several
2124 types of simple databases stored in memory and in files, and <ndbm.h> is
2125 an old `ndbm'-compatible interface using the `db' functions. Link with
2126 `-ldb' to get these functions.
2128 * New macro `strdupa' copies a string like `strdup', but uses local stack
2129 space from `alloca' instead of dynamic heap space from `malloc'.
2131 * New function `strnlen' is like `strlen' but searches only a given maximum
2132 number of characters for the null terminator. `stpncpy', `strndup' and
2133 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2134 function.
2136 * New function `statfs' in header <sys/statfs.h>.
2138 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2139 provide convenient functions for operating on blocks of null-terminated
2140 strings.
2142 * A new suite of functions in <utmp.h> handle all the details of reading
2143 and writing the utmp file.
2145 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2146 Thorsten Kukuk.
2148 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2149 completely POSIX compliant and also implemented the extended functionality
2150 to handle alternate digit representation and alternate era date formats.
2152 * Ulrich Drepper provided an implementation of the `strptime' function
2153 defined in XPG4.2 which transforms a string into a `struct tm' value.
2155 * Paul Eggert provided the tzselect shell script as part of the timezone
2156 code. The shell script makes it easy to select the correct timezone
2157 specification.
2159 * The implementation of the malloc family of functions is completely replaced
2160 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2161 The implementation uses the mmap function (if available) and it is
2162 optimized for the use in multi threaded programs.
2164 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2165 functions. This new functionality is usable by specifying a special
2166 salt string and it is compatible with implementation on *BSD systems.
2168 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2169 `getsubopt' to handle second level command line options, `bsd_signal'
2170 to access BSD style `signal' functionality, the obsolete `regexp' style
2171 expression matcher.
2173 * the `lchown' function is available on system which support this
2174 functionality.
2176 * The implementation of the shadow password handling function was contributed
2177 by Ulrich Drepper.
2179 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2181 * POSIX.1g support was added. The <sys/select.h> header is available,
2182 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2183 implementation of `getaddrinfo'.
2184 \f
2185 Version 1.09
2187 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2189 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2190 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2192 * The new function `daemon' from 4.4 BSD is useful for server programs that
2193 want to put themselves in the background.
2195 * Joel Sherrill has contributed support for several standalone boards that
2196 run without an operating system.
2198 * `printf', `scanf' and friends now accept a `q' type modifier for long
2199 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2201 * All of the code taken from BSD (notably most of the math and networking
2202 routines) has been updated from the BSD 4.4-Lite release.
2204 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2206 * The new functions `getdomainname' and `setdomainname' fetch or change the
2207 YP/NIS domain name. These are system calls which exist on systems which
2208 have YP (aka NIS).
2210 * The time zone data files have been updated for the latest international
2211 conventions.
2213 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2214 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2215 \f
2216 Version 1.08
2218 * The C library now includes support for Sun RPC, from Sun's free
2219 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2220 are included. (There is still no support for YP.)
2222 * Tom Quinn has contributed a port of the C library to SGI machines running
2223 Irix 4 (mips-sgi-irix4).
2225 * The new `lockf' function is a simplified interface to the locking
2226 facilities of `fcntl', included for compatibility.
2228 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2230 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2232 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2233 compatibility.
2235 * The error message printed by `assert' for a failed assertion now includes
2236 the name of the program (if using GNU ld) and the name of the calling
2237 function (with versions of GCC that support this).
2239 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2241 * The library now includes the <sys/mman.h> header file and memory
2242 management functions `mmap', `munmap', `mprotect', `msync', and
2243 `madvise', on systems that support those facilities.
2245 * The interface for `mcheck' has changed slightly: the function called to
2246 abort the program when an allocation inconsistency is detected now takes
2247 an argument that indicates the type of failure. The new function
2248 `mprobe' lets you request a consistency check for a particular block at
2249 any time (checks are normally done only when you call `free' or `realloc'
2250 on a block).
2252 * It is now possible to easily cross-compile the C library, building on one
2253 system a library to run on another machine and/or operating system. All
2254 you need to do is set the variable `HOST_CC' in `configparms' to the
2255 native compiler for programs to run on the machine you are building on (a
2256 few generator programs are used on Unix systems); set `CC' to the
2257 cross-compiler.
2259 * The new function `fexecve' (only implemented on the GNU system) executes
2260 a program file given a file descriptor already open on the file.
2261 \f
2262 Version 1.07
2264 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2265 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2267 * You can set the variable `libprefix' in `configparms' to specify a prefix
2268 to be prepended to installed library files; this makes it easy to install
2269 the GNU C library to be linked as `-lgnuc' or whatever.
2271 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2272 copies a limited number of characters from a string, and returns the
2273 address of the last character written.
2275 * You no longer need to check for whether the installed `stddef.h' is
2276 compatible with the GNU C library. configure now checks for you.
2278 * You can now define a per-stream `fileno' function to convert the
2279 stream's cookie into an integral file descriptor.
2281 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2282 allocates zero bytes of storage, and returns a unique pointer which
2283 you can pass to `realloc' or `free'. The behavior is undefined if
2284 you dereference this pointer.
2286 * The C library now runs on Sony NEWS m68k machines running either
2287 NewsOS 3 or NewsOS 4.
2289 * The new `syscall' function is a system-dependent primitive function
2290 for invoking system calls. It has the canonical behavior on Unix
2291 systems, including unreliable return values for some calls (such as
2292 `pipe', `fork' and `getppid').
2294 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2295 to `EAGAIN', which is the preferred name. On systems whose kernels
2296 use two distinct codes, the C library now translates EWOULDBLOCK to
2297 EAGAIN in every system call function.
2298 \f
2299 Version 1.06
2301 * The GNU C Library Reference Manual is now distributed with the library.
2302 `make dvi' will produce a DVI file of the printed manual.
2303 `make info' will produce Info files that you can read on line using C-h i
2304 in Emacs or the `info' program.
2305 Please send comments on the manual to bug-glibc-manual@gnu.org.
2307 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2309 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2311 * Jason Merrill has contributed a port to the Sequent Symmetry running
2312 Dynix version 3 (i386-sequent-dynix).
2314 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2315 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2317 * New function `memory_warnings' lets you arrange to get warnings when
2318 malloc is running out of memory to allocate, like Emacs gives you.
2320 * The C library now contains the relocating allocator used in Emacs 19 for
2321 its editing buffers. This allocator (ralloc) minimizes allocation
2322 overhead and fragmentation by moving allocated regions around whenever it
2323 needs to. You always refer to a ralloc'd region with a "handle" (a
2324 pointer to a pointer--an object of type `void **').
2326 * There is a new `printf' format: `%m' gives you the string corresponding
2327 to the error code in `errno'.
2329 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2330 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2331 pass, the `a' modifier says to fill in a `char **' you pass with a
2332 malloc'd string.
2334 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2335 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2336 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2338 * `mkstemp' is a traditional Unix function to atomically create and open a
2339 uniquely-named temporary file.
2340 \f
2341 Version 1.05
2343 * The standard location for the file that says what the local timezone is
2344 has changed again. It is now `/usr/local/etc/localtime' (or more
2345 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2347 * The distribution no longer contains any files with names longer than 14
2348 characters.
2350 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2351 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2353 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2354 \f
2355 Version 1.04
2357 * The configuration process has changed quite a bit. The `configure'
2358 script is now used just like the configuration scripts for other GNU
2359 packages. The `sysdeps' directory hierarchy is much rearranged.
2360 The file `INSTALL' explains the new scheme in detail.
2362 * The header files no longer need to be processed into ANSI C and
2363 traditional C versions. There is just one set of files to install, and
2364 it will work with ANSI or old C compilers (including `gcc -traditional').
2366 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2367 MIPS DECStation running Ultrix 4.
2369 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2370 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2371 made itself into a shared library.
2373 * Yet further improved support for the i386, running 4.3 BSD-like systems
2374 (such as Mach 3 with the Unix single-server), or System V.
2376 * New function `strncasecmp' to do case-insensitive string comparison
2377 with limited length.
2379 * New function `strsep' is a reentrant alternative to `strtok'.
2381 * New functions `scandir' and `alphasort' for searching directories.
2383 * New function `setenv' is a better interface to `putenv'.
2385 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2386 function for traversing a directory tree.
2388 * The GNU obstack package is now also part of the C library.
2389 The new function `open_obstack_stream' creates a stdio stream that
2390 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2391 formatted output directly to an obstack.
2393 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2394 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2396 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2398 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2399 things to your strings.
2401 * There are some new test programs: test-fseek, testmb, and testrand.
2403 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2404 These ports are not finished, but are a good starting place for really
2405 supporting those systems.
2407 * `/etc/localtime' is now the standard location for the file that says what
2408 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2409 This follows the general principle that `/etc' is the place for all local
2410 configuration files.
2412 * The C library header files now use `extern "C"' when used by the C++
2413 compiler, so the C library should now work with C++ code.
2415 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2416 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2417 in <strings.h>.)
2419 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2420 function which uses the `merge sort' algorithm, and is said to be
2421 significantly faster than the old GNU `qsort' function. Merge sort is
2422 now the standard `qsort' function. The new algorithm can require a lot
2423 of temporary storage; so, the old sorting function is called when the
2424 required storage is not available.
2426 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2427 provides the Unix `crypt' function, plus some other entry points.
2429 * The code and header files taken from 4.4 BSD have been updated with the
2430 latest files released from Berkeley.
2431 \f
2432 ----------------------------------------------------------------------
2433 Copyright information:
2435 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2437 Permission is granted to anyone to make or distribute verbatim copies
2438 of this document as received, in any medium, provided that the
2439 copyright notice and this permission notice are preserved,
2440 thus giving the recipient permission to redistribute in turn.
2442 Permission is granted to distribute modified versions
2443 of this document, or of portions of it,
2444 under the above conditions, provided also that they
2445 carry prominent notices stating who last changed them.
2446 \f
2447 Local variables:
2448 version-control: never
2449 fill-column: 76
2450 End: