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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 2.19.1
10 * The following bugs are resolved with this release:
12 16545, 16683, 16689, 16701, 16706, 16707, 16739, 16815.
13 \f
14 Version 2.19
16 * The following bugs are resolved with this release:
18 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
19 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
20 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
21 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
22 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
23 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
24 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
25 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
26 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
27 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
28 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
29 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
30 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
31 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
32 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
33 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16384, 16385, 16386,
34 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430, 16431,
35 16453, 16474, 16506, 16510, 16529
37 * Slovenian translations for glibc messages have been contributed by the
38 Translation Project's Slovenian team of translators.
40 * The public headers no longer use __unused nor __block. This change is to
41 support compiling programs that are derived from BSD sources and use
42 __unused internally, and to support compiling with Clang's -fblock
43 extension which uses __block.
45 * CVE-2012-4412 The strcoll implementation caches indices and rules for
46 large collation sequences to optimize multiple passes. This cache
47 computation may overflow for large collation sequences and may cause a
48 stack or buffer overflow. This is now fixed to use a slower algorithm
49 which does not use a cache if there is an integer overflow.
51 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
52 rules for large collation sequences to optimize multiple passes and falls
53 back to alloca if malloc fails, resulting in a possible stack overflow.
54 The implementation now falls back to an uncached collation sequence lookup
55 if malloc fails.
57 * CVE-2013-4788 The pointer guard used for pointer mangling was not
58 initialized for static applications resulting in the security feature
59 being disabled. The pointer guard is now correctly initialized to a
60 random value for static applications. Existing static applications need
61 to be recompiled to take advantage of the fix (bug 15754).
63 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
64 to the d_name member of struct dirent, or omit the terminating NUL
65 character. (Bugzilla #14699).
67 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
68 aligned_alloc functions could allocate too few bytes or corrupt the
69 heap when passed very large allocation size values (Bugzilla #15855,
70 #15856, #15857).
72 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
73 for AF_INET6 has been fixed (Bugzilla #16072).
75 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
76 pap_CW, quz_PE, the_NP.
78 * Substantially revised locales: gd_GB, ht_HT
80 * The LC_ADDRESS field was updated to support country_car for almost all
81 supported locales.
83 * ISO 1427 definitions were updated.
85 * ISO 3166 definitions were updated.
87 * The localedef utility now supports --big-endian and --little-endian
88 command-line options to generate locales for a different system from that
89 for which the C library was built.
91 * Binary locale files now only depend on the endianness of the system for
92 which they are generated and not on other properties of that system. As a
93 consequence, binary files generated with new localedef may be incompatible
94 with old versions of the GNU C Library, and binary files generated with
95 old localedef may be incompatible with this version of the GNU C Library,
96 in the following circumstances:
98 + Locale files may be incompatible on m68k systems.
100 + Locale archive files (but not separate files for individual locales) may
101 be incompatible on systems where plain "char" is signed.
103 * The configure option --disable-versioning has been removed. Builds with
104 --disable-versioning had not worked for several years.
106 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
107 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
109 * SystemTap probes for malloc have been introduced.
111 * SystemTap probes for slow multiple precision fallback paths of
112 transcendental functions have been introduced.
114 * Support for powerpc64le has been added.
116 * The soft-float powerpc port now supports e500 processors.
118 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
120 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
121 set of header declarations that are enabled by default, even when other
122 feature test macros or compiler options such as -std=c99 would otherwise
123 disable some of those declarations.
125 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
126 conflict with POSIX. The libbsd-compat library (which was a dummy library
127 that did nothing) has also been removed.
129 * Preliminary documentation about Multi-Thread, Async-Signal and
130 Async-Cancel Safety has been added.
131 \f
132 Version 2.18
134 * The following bugs are resolved with this release:
136 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
137 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
138 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
139 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
140 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
141 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
142 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
143 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
144 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
145 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
146 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
147 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
148 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
149 15759.
151 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
152 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
153 Distributions can re-enable building and using pt_chown via the new configure
154 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
155 considerable security risks and should only be used if the distribution
156 understands and accepts the risks.
158 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
159 #15078).
161 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
162 fixed (Bugzilla #15330).
164 * Add support for calling C++11 thread_local object destructors on thread
165 and program exit. This needs compiler support for offloading C++11
166 destructor calls to glibc.
168 * Improved worst case performance of libm functions with double inputs and
169 output.
171 * Support for priority inherited mutexes in pthread condition variables on
172 non-x86 architectures.
174 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
176 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
178 * Optimized string functions for ARM. Implemented by Will Newton and
179 Richard Henderson.
181 * Optimized libm functions for SPARC. Implemented by David S. Miller.
183 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
184 Richard Henderson.
186 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
187 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
189 * Added a benchmark framework to track performance of functions in glibc.
191 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
192 It is based on draft TS 18661 and currently enabled as a GNU extension.
194 * On Linux, the clock function now uses the clock_gettime system call
195 for improved precision, rather than old times system call.
197 * Added support for version-3 tz format files. This is needed when using
198 the tz database release 2013e or later, and affects a few unusual cases --
199 currently only TZ='America/Godthab' for time stamps after 2037.
201 * Added new API functions pthread_getattr_default_np and
202 pthread_setattr_default_np to get and set the default pthread
203 attributes of a process.
205 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
206 This may improve lock scaling of existing programs on TSX capable systems.
207 When the --enable-lock-elision=yes parameter is specified at configure
208 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
209 mutexes.
211 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
212 availability). Implemented by Ryan S. Arnold.
214 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
215 \f
216 Version 2.17
218 * The following bugs are resolved with this release:
220 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
221 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
222 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
223 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
224 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
225 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
226 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
227 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
228 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
229 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
230 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
231 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
232 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
233 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
234 14879, 14889, 14893, 14898, 14914.
236 * Optimization of memcpy for MIPS.
238 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
239 EMFILE has been fixed (Bugzilla #14889).
241 * The add-on ports collection is now distributed in the "ports" subdirectory
242 of the main GNU C Library distribution, rather than separately.
244 * Port to ARM AArch64 contributed by Linaro.
246 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
247 Optimized versions of memcpy, memset, and memcmp added for System z10 and
248 zEnterprise z196.
249 Implemented by Andreas Krebbel.
251 * The new function secure_getenv allows secure access to the environment,
252 returning NULL if running in a SUID/SGID process. This function replaces
253 the internal function __secure_getenv.
255 * SystemTap static probes have been added into the dynamic linker.
256 Implemented by Gary Benson.
258 * Optimizations of string functions strstr, strcasestr and memmem.
259 Implemented by Maxim Kuvyrkov.
261 * The minimum Linux kernel version that this version of the GNU C Library
262 can be used with is 2.6.16.
264 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
265 powerpc POWER7. Implemented by Will Schmidt.
267 * New configure option --disable-nscd builds the C library such that it
268 never attempts to contact the Name Service Caching Daemon (nscd).
269 New configure option --disable-build-nscd avoids building nscd itself;
270 this is the default if --disable-nscd is used.
272 * Improved support for cross-compilation, including cross-testing and
273 bootstrap builds without a previously built glibc.
275 * Several testsuite tests are now able to test multiple IFUNC variants of an
276 interface, rather than just testing the one that would be chooen by
277 default.
279 * New configure options --with-bugurl and --with-pkgversion, for
280 distributors to use to embed their bug-reporting and package version
281 information in --help and --version output.
283 * The ttyname and ttyname_r functions on Linux now fall back to searching for
284 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
285 allows creation of chroots without the procfs mounted on /proc.
287 * The `crypt' function now fails if passed salt bytes that violate the
288 specification for those values. On Linux, the `crypt' function will
289 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
290 enabled, and fail on encrypted strings using the MD5 or DES algorithm
291 when the mode is enabled.
293 * The `clock_*' suite of functions (declared in <time.h>) is now available
294 directly in the main C library. Previously it was necessary to link with
295 -lrt to use these functions. This change has the effect that a
296 single-threaded program that uses a function such as `clock_gettime' (and
297 is not linked with -lrt) will no longer implicitly load the pthreads
298 library at runtime and so will not suffer the overheads associated with
299 multi-thread support in other code such as the C++ runtime library.
301 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
302 sat_IN, and szl_PL.
303 \f
304 Version 2.16
306 * The following bugs are resolved with this release:
308 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
309 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
310 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
311 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
312 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
313 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
314 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
315 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
316 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
317 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
318 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
319 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
320 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
321 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
322 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
323 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
324 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
325 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
326 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
327 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
328 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
329 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
330 14277, 14278.
332 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
333 configuring glibc with:
334 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
335 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
336 Implemented by H.J. Lu.
338 * ISO C11 support:
340 + define static_assert
342 + do not declare gets
344 + declare at_quick_exit and quick_exit also for ISO C11
346 + aligned_alloc. NB: The code is deliberately allows the size parameter
347 to not be a multiple of the alignment. This is a moronic requirement
348 in the standard but it is only a requirement on the caller, not the
349 implementation.
351 + timespec_get added
353 + uchar.h support added
355 + CMPLX, CMPLXF, CMPLXL added
357 Implemented by Ulrich Drepper.
359 * Support for the IA-64 has been moved to ports.
361 * Remove support for anything but ELF binary format
363 * Checking versions of poll, ppoll added.
364 Implemented by Ulrich Drepper.
366 * More generic and 64-bit performance optimizations to math functions.
367 Implemented by Ulrich Drepper.
369 * New configure option --enable-obsolete-rpc makes the deprecated RPC
370 headers and functions available at compile time as they were before
371 version 2.14. This option will be removed at some time in the future
372 after the TI-RPC library becomes fully sufficient for the needs of
373 existing applications.
375 * Compatibility code for Linux kernel versions before 2.4 has been removed.
376 Note that glibc is not expected to work with any Linux kernel version
377 before 2.6.
379 * New header <sys/auxv.h> and function getauxval allowing easy access to
380 the AT_* key-value pairs passed from the Linux kernel. The header also
381 defines the HWCAP_* bits associated with the AT_HWCAP key.
383 * New locales: mag_IN
385 * New configure option --enable-systemtap builds SystemTap static probes
386 into libc for setjmp and longjmp and into libpthread for various operations.
387 So far the setjmp/longjmp probes and some of the libpthread probes are
388 provided only for i*86 and x86_64.
389 Implemented by Roland McGrath and Rayson Ho.
391 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
393 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
394 and Will Schmidt.
396 * More optimized functions for SPARC. Implemented by David S. Miller.
398 * Improved support for cross-compilation, especially bootstrap builds
399 without a previously built glibc.
401 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
402 Chris Metcalf from Tilera.
404 * Support for the old ARM ABI has been removed from ports. Only the EABI is
405 now supported for ARM processors.
407 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
408 as the name of the dynamic linker, to distinguish it from the
409 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
411 * Support for CRIS has been removed from ports.
413 * A new class of installed header has been documented for low-level
414 platform-specific functionality. PowerPC added the first instance with a
415 function to provide time base register access. Contributed by Tulio
416 Magno Quites Machado Filho.
418 * ix86 configurations now install header files that are consistent with
419 what x86-64 configurations install. These same header files can be used
420 for -m32, -m64, or -mx32 builds.
421 Contributed by H.J. Lu.
423 * Math library bug fixes. A thorough audit of all open math library bugs was
424 conducted by Joseph Myers. Significant progress was made on many math
425 library bugs resulting in more accurate exceptions and function results.
426 Many thanks to all those that contributed including Andreas Jaeger for his
427 patch review and work on the x87 trigonometric instruction issues.
429 * Timezone data is no longer installed. Timezone-related binaries and scripts
430 will continue to be installed. Users should obtain their timezone data from
431 their distribution provider or from the tzdata package at
432 <ftp://munnari.oz.au/pub/>.
433 \f
434 Version 2.15
436 * The following bugs are resolved with this release:
438 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
439 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
440 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
441 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
442 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
443 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
444 13484, 13506, 13515, 13523, 13524, 13538, 13540
446 * New program pldd to list loaded object of a process
447 Implemented by Ulrich Drepper.
449 * Add nss_db support back to glibc. No more dependency on Berkeley db
450 and support for initgroups lookups.
451 Implemented by Ulrich Drepper.
453 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
454 Contributed by HJ Lu.
456 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
457 Contributed by HJ Lu.
459 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
460 on x86-32 and x86-64.
461 Contributed by Liubov Dmitrieva.
463 * Optimized strchr and strrchr for SSE on x86-32.
464 Contributed by Liubov Dmitrieva.
466 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
467 for x86-64 and x86-32.
468 Contributed by Liubov Dmitrieva.
470 * New interfaces: scandirat, scandirat64
471 Implemented by Ulrich Drepper.
473 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
474 Implemented by Ulrich Drepper.
476 * nscd now also caches the netgroup database.
477 Implemented by Ulrich Drepper.
479 * Integrate libm with gcc's -ffinite-math-only option.
480 Implemented by Ulrich Drepper.
482 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
483 to math functions. Implemented by Ulrich Drepper.
485 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
486 Implemented by Ulrich Drepper.
488 * New Linux interfaces: process_vm_readv, process_vm_writev
490 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
491 Implemented by Ulrich Drepper.
493 * Optimized nearbyint and strcasecmp for PPC.
494 Implemented by Adhemerval Zanella.
496 * New locales: bho_IN, unm_US, es_CU, ta_LK
497 \f
498 Version 2.14
500 * The following bugs are resolved with this release:
502 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
503 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
504 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
505 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
506 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
507 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
508 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
509 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
510 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
511 12795, 12811, 12813, 12814, 12841
513 * The RPC implementation in libc is obsoleted. Old programs keep working
514 but new programs cannot be linked with the routines in libc anymore.
515 Programs in need of RPC functionality must be linked against TI-RPC.
516 The TI-RPC implementation is IPv6 enabled and there are other benefits.
518 Visible changes of this change include (obviously) the inability to link
519 programs using RPC functions without referencing the TI-RPC library and the
520 removal of the RPC headers from the glibc headers.
521 Implemented by Ulrich Drepper.
523 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
524 syncfs, setns, sendmmsg
526 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
527 yue_HK, lij_IT, mhr_RU
529 * New encodings: CP770, CP771, CP772, CP773, CP774
531 * New program sotruss to trace calls through PLTs
532 Implemented by Ulrich Drepper.
534 * The malloc hook implementation is marked deprecated and will be removed
535 from the default implementation in the next version. The design never
536 worked ever since the introduction of threads. Even programs which do
537 not create threads themselves can use multiple threads created internally.
538 \f
539 Version 2.13
541 * The following bugs are resolved with this release:
543 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
544 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
545 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
546 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
547 12378, 12394, 12397
549 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
551 * POWER7 optimizations: memset, memcmp, strncmp
553 * New optimized string functions for x86-64: strnlen (SSE2),
554 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
555 Implemented by Ulrich Drepper.
556 \f
557 Version 2.12
559 * The following bugs are resolved with this release:
561 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
562 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
563 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
564 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
565 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
566 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
567 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
568 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
570 * New interfaces: pthread_getname_np, pthread_setname_np
572 * New Linux interface: recvmmsg
574 * STT_GNU_IFUNC implemented for Sparc by David Miller.
576 * The dynamic linker now recognizes supported ABI versions from the
577 EI_ABIVERSION field in the ELF header.
578 Implemented by Ulrich Drepper.
580 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
581 will not be used to fill in password fields in the passwd.byname replies.
582 Instead it is used to synthesize the shadow.byname table, should it be
583 missing. This is a useful mode in some installations involving Solaris.
584 Implemented by Ulrich Drepper.
586 * New locales: kok_IN, sq_MK, cv_RU
587 \f
588 Version 2.11
590 * The following bugs are resolved with this release:
592 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
593 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
594 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
595 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
596 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
597 10789, 10817, 10823, 10840, 10847
599 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
600 mkostemps64
601 Implemented by Ulrich Drepper.
603 * Checking version of longjmp added that fails if an uninitialized stack
604 frame would be created. Implemented by Ulrich Drepper.
606 * STT_GNU_IFUNC is now supported in static executables.
607 Implemented by H.J. Lu.
609 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
611 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
612 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
613 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
614 Contributed by H.J. Lu.
616 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
617 Implemented by Ulrich Drepper.
619 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
620 strstr, strcasestr.
621 Contributed by H.J. Lu.
623 * Support for fma instruction in AVX on x86-64.
624 Implemented by H.J. Lu and Ulrich Drepper.
626 * AVX support in x86-64 auditing support in ld.so.
627 Implemented by H.J. Lu.
629 * STB_GNU_UNIQUE support added.
630 Implemented by Ulrich Drepper.
632 * Implement second fallback mode for optimized DNS lookup for even more
633 broken environments. If two requests from the same port are not
634 handled correctly close the socket and open a new one before sending
635 the second request. The 'single-request-reopen' option in /etc/resolv.conf
636 can be used to select this mode right away, instead of rediscovering the
637 necessity is every process again.
638 Implemented by Ulrich Drepper.
640 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
641 Implemented by Adam Tkac.
643 * Optimized iconv conversions for S390x.
644 Implemented by Andreas Krebbel.
646 * Using condvars with PI mutexes is now more efficient due to kernel
647 support for requeueing to PI futexes. NPTL support added for x86-64.
648 Implemented by Ulrich Drepper.
650 * New locales: ps_AF, my_MM
651 \f
652 Version 2.10
654 * The following bugs are resolved with this release:
656 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
657 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
658 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
659 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
660 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
662 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
663 Implemented by Ulrich Drepper.
665 * New Linux interfaces: accept4, fallocate, fallocate64.
666 Implemented by Ulrich Drepper.
668 * Correct declarations of string function when used in C++ code. This
669 could lead to compile errors for invalid C++ code.
671 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
672 now in POSIX.
674 * New POSIX 2008 interface: psiginfo
675 Implemented by Ulrich Drepper.
677 * New ISO C++1x interfaces: quick_exit, at_quick_exit
678 Implemented by Ulrich Drepper.
680 * Support for selecting between multiple function definitions at runtime
681 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
683 * The libcrypt library can now use the hash function implementations in
684 NSS. Implemented by Ulrich Drepper.
686 * The malloc implementation can be compiled to be less memory efficient
687 but higher performing in multi-threaded programs.
688 Implemented by Ulrich Drepper.
690 * New locales: nan_TW@latin, ks_IN
692 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
693 Implemented by Ulrich Drepper.
695 * Extended printf hook support. It is possible to use user-defined types
696 and extend existing format specifiers.
697 Implemented by Ulrich Drepper.
699 * Handling for group shadow files has been added.
700 Implemented by Ulrich Drepper.
702 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
703 servers (the case, e.g., for some people using the built-in DNS
704 server in ADSL modems/routers). There is a once-per-process timeout
705 in case of a broken server. To avoid it, users can run nscd or put
706 'options single-request' in /etc/resolv.conf.
707 Implemented by Ulrich Drepper.
708 \f
709 Version 2.9
711 * The following bugs are resolved with this release:
713 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
714 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
715 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
716 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
717 6968, 6974, 6980, 6995, 7008, 7009, 7029
719 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
720 up at the same time. Implemented by Ulrich Drepper.
722 * TLS descriptors for LD and GD on x86 and x86-64.
723 Implemented by Alexandre Oliva.
725 * getaddrinfo now handles DCCP and UDPlite.
726 Implemented by Ulrich Drepper.
728 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
729 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
730 Implemented by Ulrich Drepper.
732 * New implementation of memmem, strstr, and strcasestr which is O(n).
733 Implemented by Eric Blake.
735 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
737 * Implement "e" option for popen to open file descriptor with the
738 close-on-exec flag set. Implemented by Ulrich Drepper.
740 * Implement "b" mode for fmemopen. In this mode writes writes don't
741 implicitly add a NUL byte and seeks from the end of the buffer really
742 use the buffer end, not the string length as the basis.
743 Implemented by Ulrich Drepper.
745 * Many functions, exported and internal, now atomically set the close-on-exec
746 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
748 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
749 Sinhala)
750 Implemented by Pravin Satpute.
752 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
753 \f
754 Version 2.8
756 * The following bugs are resolved with this release:
758 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
759 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
760 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
761 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
762 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
763 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
764 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
766 * New locales: bo_CN, bo_IN, shs_CA.
768 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
770 * Sorting rules for some Indian languages (Devanagari and Gujarati).
771 Implemented by Pravin Satpute.
773 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
775 * nscd caches now all timeouts for DNS entries
776 Implemented by Ulrich Drepper.
778 * nscd is more efficient and wakes up less often.
779 Implemented by Ulrich Drepper.
781 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
782 vdprintf, and obstack_vprintf.
783 Implemented by Jakub Jelinek.
785 * Faster memset for x86-64.
786 Implemented by Harsha Jagasia and H.J. Lu.
788 * Faster memcpy on x86.
789 Implemented by Ulrich Drepper.
791 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
792 Implemented by Ulrich Drepper.
794 * Faster sqrt and sqrtf implemention for some PPC variants.
795 Implemented by Steven Munroe.
796 \f
797 Version 2.7
799 * The following bugs are resolved with this release:
801 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
802 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
803 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
804 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
805 5071, 5103, 5104, 5112, 5113, 5184, 5186
807 * More checking functions: fread, fread_unlocked, open*, mq_open.
808 Implemented by Jakub Jelinek and Ulrich Drepper.
810 * Extend fortification to C++. Implemented by Jakub Jelinek.
812 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
813 by not recognizing 'a' as a modifier when those specs are requested.
814 Implemented by Jakub Jelinek.
816 * PPC optimizations to math and string functions.
817 Implemented by Steven Munroe.
819 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
820 options to be passed. Implemented by Ulrich Drepper.
822 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
824 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
825 Implemented by Ulrich Drepper.
827 * Handle private futexes in the NPTL implementation.
828 Implemented by Jakub Jelinek and Ulrich Drepper.
830 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
831 Implemented by Roland McGrath and Ulrich Drepper.
833 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
835 * SHA-256 and SHA-512 based password encryption.
836 Implemented by Ulrich Drepper.
838 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
839 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
840 yo_NG.
842 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
843 Implemented by Ulrich Drepper.
844 \f
845 Version 2.6
847 * The following bugs are resolved with this release:
849 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
850 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
851 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
852 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
853 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
854 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
855 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
856 4702, 4858
858 * New Linux interfaces: epoll_pwait, sched_getcpu.
860 * New generic interfaces: strerror_l.
862 * nscd can now cache the services database. Implemented by Ulrich Drepper.
863 \f
864 Version 2.5
866 * The following bugs are resolved with this release:
868 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
869 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
870 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
871 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
872 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
873 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
874 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
875 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
876 3225, 3251, 3252, 3253, 3273
878 * For Linux, the sorting of addresses returned by getaddrinfo now also
879 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
880 Implemented by Ulrich Drepper.
882 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
883 Implemented by Ulrich Drepper.
885 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
887 * New iconv module for MIK. Contributed by Alexander Shopov.
889 * For sites with broken group and/or passwd database, the auto-propagate
890 option of nscd can prevent creating ID lookup entries from the results
891 of a name lookup and vice versa. This usually is no problem but some
892 site might have problems with the default behavior.
893 Implemented by Ulrich Drepper.
895 * Iterating over entire database in NIS can be slow. With the
896 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
897 to trade time for memory. The entire database will be read at once.
898 Implemented by Ulrich Drepper.
900 * The interfaces introduced in RFC 3542 have been implemented by
901 Ulrich Drepper.
903 * Support for the new ELF hash table format was added by Ulrich Drepper.
905 * Support for priority inheritance mutexes added by Jakub Jelinek and
906 Ulrich Drepper.
908 * Support for priority protected mutexes added by Jakub Jelinek.
910 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
911 or_IN, csb_PL, fy_NL, sr_ME.
912 \f
913 Version 2.4
915 * More overflow detection functions.
917 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
918 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
920 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
921 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
922 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
923 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
924 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
925 by Masahide Washizawa.
927 * It is now possible to install audit libraries for the dynamic linker using
928 LD_AUDIT. Implemented by Ulrich Drepper.
930 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
931 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
932 For a libc and libpthread that works well on Linux 2.4 kernels, we
933 recommend using the stable 2.3 branch.
935 * The new function open_wmemstream acts like open_memstream,
936 but uses a wchar_t wide character buffer.
938 * The new function ppoll is an improved version of poll, similar to pselect.
940 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
941 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
942 renameat, unlinkat, linkat, symlinkat, readlinkat.
944 * New Linux kernel system calls: unshare,
945 inotify_init, inotify_add_watch, inotify_rm_watch.
947 * The euidaccess function is now also known by the alias eaccess,
948 for compatibility with some other systems.
950 * Timezone data updated to 2006b version.
951 \f
952 Version 2.3.6
954 * The following bugs are resolved with this release:
956 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
957 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
958 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
959 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
960 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
961 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
963 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
965 * As of this release, GCC 4 can be used to compile the C Library.
967 * Timezone data updated to 2005m version.
968 \f
969 Version 2.3.5
971 * The following bugs are resolved with this release:
973 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
974 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
975 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
976 777, 787, 821, 822, 823, 825
978 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
979 \f
980 Version 2.3.4
982 * Support for RFC 3678. Real implementations exist only for Linux so far.
983 Implemented by Ulrich Drepper.
985 * nscd can now cache entries persistently. Expiring entries are reloaded.
986 For speedups the cache can be shared in memory with client processes.
987 Implemented by Ulrich Drepper.
989 * nscd can now perform SELinux checks.
990 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
992 * getaddrinfo queries are now cached. Canonical name lookup is performed
993 efficiently.
994 Implemented by Ulrich Drepper.
996 * The nothrow function attribute is used when headers are used by gcc when
997 compiling C code. This can avoid significant amounts of exception
998 handling data.
1000 * The malloc functions perform more error checking and are stricter when
1001 it comes to reacting on errors. The default action is to terminate
1002 the process after showing an error message. Implemented by Ulrich Drepper.
1004 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1005 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1007 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1008 namespaces using the new function dlmopen(). This feature is of course,
1009 like most other dynamic loading functionality, not available in statically
1010 linked applications. Implemented by Ulrich Drepper.
1012 * Low-overhead boundary checking variants of string and some stdio functions
1013 were added. These are to be used in conjunction with a gcc patch by
1014 Jakub Jelinek which adds calls to these functions if possible.
1015 Implemented by Jakub Jelinek and Ulrich Drepper.
1017 * Old code for several operating systems and machine architectures that
1018 have not been in working condition in a long time have been removed from
1019 the main source tree maintained by the GNU C Library's maintainers.
1020 These files are now reside in the separate `ports' source module
1021 that is usable as an add-on when building the library.
1022 \f
1023 Version 2.3.3
1025 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1026 interrogate the dynamic linker, compatible with the Solaris interface.
1028 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1029 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1031 * getifaddrs now uses the netlink interface on Linux to get its information.
1032 Implemented by Thorsten Kukuk.
1034 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1035 Implemented by Ulrich Drepper.
1037 * support for non-executable stacks on x86 has been added. Changes mostly
1038 by Roland McGrath.
1040 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1041 and Ulrich Drepper.
1043 * getaddrinfo now performs destination address selection according to
1044 RFC 3484.
1045 \f
1046 Version 2.3.2
1048 * Thread-safe interfaces for many functions that access locale data
1049 were added in version 2.3, but these features were omitted from NEWS.
1050 Many functions have variants with an `_l' suffix that take a `locale_t'
1051 object as a parameter rather than consulting the current locale.
1052 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1053 create and maintain `locale_t' objects. Additionally, the new function
1054 `uselocale' sets "the current locale" (as used by functions not so
1055 parameterized) set for an individual thread. These features were added
1056 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1058 * The functions getresuid, getresgid, setresuid, and setresgid, which
1059 have long been available on Linux, are now declared in <unistd.h>
1060 and are now also available on the Hurd.
1062 * ELF thread-local storage support (TLS) now works on x86-64.
1064 * The new dynamic string token $LIB is expanded in shared library names.
1065 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1067 * Aldy Hernandez contributed complete software floating point support for
1068 PowerPC machines with no FPU.
1070 * fexecve is implemented on Linux.
1072 * The `btowc' function should work at least twice as fast due to
1073 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1075 * With approriate thread add-ons cancelable functions are now implemented
1076 in libc.so as well. No need to call the function in libpthread. This
1077 change allowed to finally disable the incorrect and expensive handling
1078 of weak definition in ld.so.
1080 * Yet more PLT entries in libc.so have been removed. We finally arrived
1081 at the bare minimum. Startup times improved appropriately.
1083 * Support for the new Linux/x86 system call interface was added. The
1084 AT_SYSINFO auxiliary vector entry is recognized and handled.
1085 \f
1086 Version 2.3
1088 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1089 charsets.
1091 * iconv (the program and the interface) now accepts empty names (excluding
1092 options like //TRANSLIT) to mean "use charset of current locale".
1094 * localedef can now transliterate characters in strings which are not in
1095 the provided charmap. The information from the input locale is used.
1097 * Prelinking support was added for ELF targets. This requires additional
1098 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1100 * Read-only stdio streams now use mmap to speed up operation by eliminating
1101 copying and buffer underflows. To use add 'm' to the mode string of
1102 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1104 * The malloc functions were completely rewritten by Wolfram Gloger based
1105 on Doug Lea's malloc-2.7.0.c.
1107 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1108 implementation of regex.
1110 * Bruno Haible upgraded the iconv and locale implementation to support
1111 Unicode 3.2.
1113 * Contents of the LC_* and LANG environment variables in the CEN style are
1114 not recognized anymore. It never was used. Change by Ulrich Drepper.
1116 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1117 thread-local storage (TLS) ABI on some platforms.
1118 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1120 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1121 EUC-JISX0213, and TSCII.
1123 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1124 BSD-compatible interface for getting all network interface addresses.
1125 Implementation for IPv4 by Roland McGrath.
1127 * Loading of locale data is faster due to the introduction of a locale
1128 archive. Implemented by Roland McGrath and Ulrich Drepper.
1130 * Startup times are significantly reduced by not using exported functions
1131 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1132 and Ulrich Drepper.
1134 * Steven Munroe contributed a port to PowerPC64/Linux.
1135 \f
1136 Version 2.2.6
1138 * The Hurd now uses the GNU libio implementation of stdio rather than the
1139 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1141 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1142 with the same behavior as the Linux system call of the same name.
1143 \f
1144 Version 2.2.5
1146 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1147 128-bit long double format.
1149 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1150 IBM1161, and IBM1162 charsets.
1152 * Andreas Jaeger contributed a port to x86-64/Linux.
1154 * Peter Bruin contributed a port to PowerPC/Hurd.
1156 * libc functions using I/O streams now can handle wide-oriented streams
1157 as well.
1159 * optimizations in the dynamic linker. Binaries created by recent binutils
1160 versions start up quicker due to reduced time spent on relocations.
1162 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1163 \f
1164 Version 2.2.4
1166 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1167 asinh, atanh, j0 for the 128-bit long double format.
1169 * Bruno Haible updated all the code handling Unicode in some form to
1170 support Unicode 3.1.
1172 * Speed of regex for single-byte locales is back to previous levels.
1173 Patch by Isamu Hasegawa.
1175 * Alpha, SPARC, and IA-64 now also using floating stacks.
1177 * Startup time of internationalized applications greatly improved through
1178 iconv cache. Use iconvconfig to generate the cache file.
1179 Contributed by Ulrich Drepper.
1181 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1182 severe performance problems. Patch by David Mosberger.
1184 * The Hurd port got a lot more functionality like AIO, various stdio
1185 extensions, etc. Mainly done by Roland McGrath.
1187 * mtrace can now lookup symbols in shared libraries.
1188 \f
1189 Version 2.2.3
1191 * Intel's IA-64 math library is largely integrated. It provides fast and
1192 accurate implementatations for most basic and standard math functions
1193 in float, double, and long double format.
1195 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1196 and asin for the 96-bit long double format and asin, log, tan for the
1197 128-bit long double format.
1199 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1200 The basic double functions exist today. Contributed by Abraham Ziv
1201 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1202 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1204 * An asynchronous name lookup library was added. The interface is designed
1205 after POSIX AIO. The proposal was circulated beforehand to get comments.
1206 No negative ones came in. Implemented by Ulrich Drepper.
1208 * Port to S390/64bit contributed by Martin Schwidefsky
1209 <schwidefsky@de.ibm.com>.
1211 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1212 of functions for Linux/IA-64.
1214 * The RPC code is now thread safe. Threads can now use the same service
1215 of different services at the same time. Patch by Eric Norum
1216 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1218 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1219 family of functions for Linux/S390.
1221 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1222 of functions for Linux/x86.
1224 * Port to Linux/CRIS contributed by Axis Communications.
1225 \f
1226 Version 2.2.2
1228 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1229 we can now check for namespace violations and missing declarations. The
1230 result is that almost all headers are now Unix-compliant (as defined in
1231 the upcoming XPG6). The negative side is that some programs might need
1232 corrections, too, if they depend on the incorrect form of the headers in
1233 previous versions which defined too many symbols and included too many
1234 other headers.
1236 * regex now handles multibyte character sets correctly.
1237 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1239 * iconv (the program) does now conform to the upcoming XPG6 and handles
1240 charmaps. Instead of the charset names the path of charmaps can be
1241 provided and the conversion happens based on this data.
1242 Contributed by Ulrich Drepper.
1244 * The locale program now provides detailed information about the installed
1245 locales. While
1247 locale -a
1249 only lists the names of the supported locales
1251 locale -a --verbose
1253 provides details such as country, language, and codeset name.
1254 Contributed by Ulrich Drepper.
1255 \f
1256 Version 2.2.1
1258 * The gencat program now parses the input file according to the charset
1259 selected by the LC_CTYPE category. This is important for stateful
1260 character sets. To make generating catalogs easier there is a way
1261 to overwrite the charset selected by the locale: before the first
1262 message or $ quote line the catalog can contain a line like
1264 $ codeset=ISO-8859-2
1266 to select the charset (ISO-8859-2 in this case).
1268 Implemented by Shinya Hanataka and Ulrich Drepper.
1270 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1271 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1272 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1274 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1275 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1277 * The LANGUAGE environment variable is now ignored unless the locale is
1278 changed from the default "C" locale.
1280 * The usual bug fixes.
1281 \f
1282 Version 2.2
1284 * Greg McGary added runtime support for bounds checking using gcc's
1285 new -fbounded-pointers option. ix86 target is complete. PowerPC
1286 is in progress.
1288 * Thorsten Kukuk added secure mode support to nscd.
1290 * The Berkeley db libraries have been removed.
1292 Related, the nss_db module is now in a separate package since it
1293 obviously requires a database library being available.
1295 * Wide character I/O streams implemented by Ulrich Drepper.
1297 * Functions from the extended socket API added by Ulrich Drepper.
1299 * Functions feenableexcept and fedisableexcept to control the
1300 behaviour of individual exceptions have been added by Andreas Jaeger.
1302 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1304 * The resolver code has been updated from bind 8.2.3-T5B which supports
1305 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1306 and Mark Kettenis.
1308 This change could in some situations effect backward compatibility. Since
1309 now `_res' is a thread-local instead of a global variable, modifying it
1310 in one thread does not have any effect in other threads.
1312 The resolver library was also extended to allow IPv6 as the transport
1313 protocol for the requests. This work was done by Stig Venaas.
1315 * Compatibility code for K&R C compilers has been removed from the
1316 header files. A ISO C compiler is needed to use the library
1317 (conforming to either C89 or C99 standard).
1319 * Complete rewrite of the localedef program to support multibyte character
1320 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1321 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1322 Implemented by Ulrich Drepper.
1324 Bruno Haible significantly improved the generation and use of the data
1325 structures for the wide character tables.
1327 * Plural handling in gettext implemented by Ulrich Drepper.
1329 * The utmp daemon has been removed.
1331 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1333 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1334 and Yutaka Niibe.
1336 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1338 * POSIX barriers implemented by Kaz Kylheku.
1340 * POSIX spawn function family implemented by Ulrich Drepper.
1342 * POSIX spinlocks are now available.
1344 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1346 * the configure option --enable-kernel=X.Y.Z allows to strip out
1347 compatibility for kernel versions before X.Y.Z. This is currently only
1348 implemented for Linux.
1350 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1351 field sin6_scope_id. This means that all programs using IPv6 should be
1352 recompiled. Don't expect binary compatibility with previous glibc
1353 versions.
1355 * various conversion modules for IBM character sets contributed by
1356 Masahide Washizawa.
1358 * IA-64 port by Jes Sorensen and HJ Lu.
1359 \f
1360 Version 2.1.3
1362 * bug fixes
1364 \f
1365 Version 2.1.2
1367 * bug fixes
1369 \f
1370 Version 2.1.1
1372 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1374 * New xdr functions are added; some rpc functions are now 64bit clean.
1376 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1378 * Fixed known incompatibilities with glibc 2.0.
1380 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1382 * Optimized a number of functions (especially the ELF dynamic loader).
1384 * Update timezone data files.
1386 * lots of charmaps corrections
1388 * some new locale definitions and charmaps
1390 \f
1391 Version 2.1
1393 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1394 conform to POSIX member type requirements. Symbol versions have been
1395 adjusted as needed within the library, and for direct use by applications,
1396 but there is potential for problems if third-party libraries use
1397 struct timeval as part of their interface. This does not present
1398 a problem for X and other "essential" system libraries.
1400 * An additional locale model to support C++ Standard Library locale
1401 model and probably more was implemented by Ulrich Drepper.
1403 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1404 symbol level.
1406 * Miles Bader provided the `argp' function family to support hierachical
1407 command line argument parsing, layered on top of getopt.
1409 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1411 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1412 numbers.
1414 * scanf recognizes the %a and %A format for scanning floating point numbers.
1416 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1417 information and interfaces for the available integer types.
1419 * about 130 new math functions were added to implement the ISO C9x math
1420 library.
1422 * the new header <complex.h> contains definitions of the complex math
1423 functions from ISO C 9X.
1425 * the new header <tgmath.h> defines generic macros to use complex or
1426 real valued functions.
1428 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1430 * Andreas Jaeger provided a test suite for the math library.
1432 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1434 * Ulrich Drepper added character set conversion functions (iconv).
1436 * Optimized string functions have been added.
1438 * The localedata addon is now part of glibc.
1440 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1442 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1443 daemon for NSS (nscd).
1445 Missing a better place here are some numbers on improvements. Under
1446 Linux 2.1.125 un-tar-ing the kernel sources takes
1448 user system wall
1450 using local files 12.19s 6.88s 22.91s
1452 using NIS 13.92s 8.91s 26.34s
1454 using NIS & nscd 10.37s 7.34s 25.30s
1456 using NIS+ 27.57s 30.37s 640.46s
1458 using NIS+ & nscd 10.25s 7.83s 26.51s
1460 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1462 Keep in mind that non-namelookup related operations dominate above times.
1463 It was just a common complain that using NIS+ unpacking the kernel is
1464 horribly slow.
1466 [1] The old nscd implementation is not available anymore since it was
1467 distributed with glibc up to version 2.0.98 and thus is now replaced.
1469 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1471 * Mark Kettenis provided a Hesiod NSS module.
1473 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1474 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1476 * rcmd can now handle netgroups (Dick Streefland).
1478 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1479 Bambrough.
1481 * Support for the IPv6 protocol has been added to the socket API, as per the
1482 latest draft standards.
1484 * Support for Linux 2.2 has been added.
1486 * Interface changes relative to the latest 2.0.x release:
1487 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1488 addseverity NEW: Unix98
1489 alphasort64 NEW: LFS
1490 argp_err_exit_status NEW: argp, GNU ext
1491 argp_error NEW: argp, GNU ext
1492 argp_failure NEW: argp, GNU ext
1493 argp_help NEW: argp, GNU ext
1494 argp_parse NEW: argp, GNU ext
1495 argp_program_bug_address NEW: argp, GNU ext
1496 argp_program_version NEW: argp, GNU ext
1497 argp_program_version_hook NEW: argp, GNU ext
1498 argp_state_help NEW: argp, GNU ext
1499 argp_usage NEW: argp, GNU ext
1500 authdes_create NEW: Secure RPC
1501 authdes_getucred NEW: Secure RPC
1502 authdes_pk_create NEW: Secure RPC
1503 backtrace NEW: GNU ext.
1504 backtrace_symbols NEW: GNU ext.
1505 backtrace_symbols_fd NEW: GNU ext.
1506 cacos NEW: ISO C 9x
1507 cacosf NEW: ISO C 9x
1508 cacosh NEW: ISO C 9x
1509 cacoshf NEW: ISO C 9x
1510 cacoshl NEW: ISO C 9x
1511 cacosl NEW: ISO C 9x
1512 capget NEW: kernel
1513 capset NEW: kernel
1514 carg NEW: ISO C 9x
1515 cargf NEW: ISO C 9x
1516 cargl NEW: ISO C 9x
1517 casin NEW: ISO C 9x
1518 casinf NEW: ISO C 9x
1519 casinh NEW: ISO C 9x
1520 casinhf NEW: ISO C 9x
1521 casinhl NEW: ISO C 9x
1522 casinl NEW: ISO C 9x
1523 catan NEW: ISO C 9x
1524 catanf NEW: ISO C 9x
1525 catanh NEW: ISO C 9x
1526 catanhf NEW: ISO C 9x
1527 catanhl NEW: ISO C 9x
1528 catanl NEW: ISO C 9x
1529 cbc_crypt NEW: Secure RPC
1530 ccos NEW: ISO C 9x
1531 ccosf NEW: ISO C 9x
1532 ccosh NEW: ISO C 9x
1533 ccoshf NEW: ISO C 9x
1534 ccoshl NEW: ISO C 9x
1535 ccosl NEW: ISO C 9x
1536 cexp NEW: ISO C 9x
1537 cexpf NEW: ISO C 9x
1538 cexpl NEW: ISO C 9x
1539 cimag NEW: ISO C 9x
1540 cimagf NEW: ISO C 9x
1541 cimagl NEW: ISO C 9x
1542 clearerr_locked REMOVED
1543 clntunix_create NEW: sunrpc ext
1544 clog NEW: ISO C 9x
1545 clog10 NEW: ISO C 9x
1546 clog10f NEW: ISO C 9x
1547 clog10l NEW: ISO C 9x
1548 clogf NEW: ISO C 9x
1549 clogl NEW: ISO C 9x
1550 conj NEW: ISO C 9x
1551 conjf NEW: ISO C 9x
1552 conjl NEW: ISO C 9x
1553 cpow NEW: ISO C 9x
1554 cpowf NEW: ISO C 9x
1555 cpowl NEW: ISO C 9x
1556 cproj NEW: ISO C 9x
1557 cprojf NEW: ISO C 9x
1558 cprojl NEW: ISO C 9x
1559 creal NEW: ISO C 9x
1560 crealf NEW: ISO C 9x
1561 creall NEW: ISO C 9x
1562 creat64 NEW: LFS
1563 csin NEW: ISO C 9x
1564 csinf NEW: ISO C 9x
1565 csinh NEW: ISO C 9x
1566 csinhf NEW: ISO C 9x
1567 csinhl NEW: ISO C 9x
1568 csinl NEW: ISO C 9x
1569 csqrt NEW: ISO C 9x
1570 csqrtf NEW: ISO C 9x
1571 csqrtl NEW: ISO C 9x
1572 ctan NEW: ISO C 9x
1573 ctanf NEW: ISO C 9x
1574 ctanh NEW: ISO C 9x
1575 ctanhf NEW: ISO C 9x
1576 ctanhl NEW: ISO C 9x
1577 ctanl NEW: ISO C 9x
1578 des_setparity NEW: Secure RPC
1579 ecb_crypt NEW: Secure RPC
1580 endutxent NEW: Unix98
1581 exp10 NEW: ISO C 9x
1582 exp10f NEW: ISO C 9x
1583 exp10l NEW: ISO C 9x
1584 exp2 NEW: ISO C 9x
1585 exp2f NEW: ISO C 9x
1586 exp2l NEW: ISO C 9x
1587 fattach NEW: STREAMS
1588 fdetach NEW: STREAMS
1589 fdim NEW: ISO C 9x
1590 fdimf NEW: ISO C 9x
1591 fdiml NEW: ISO C 9x
1592 feclearexcept NEW: ISO C 9x
1593 fegetenv NEW: ISO C 9x
1594 fegetexceptflag NEW: ISO C 9x
1595 fegetround NEW: ISO C 9x
1596 feholdexcept NEW: ISO C 9x
1597 feof_locked REMOVED
1598 feraiseexcept NEW: ISO C 9x
1599 ferror_locked REMOVED
1600 fesetenv NEW: ISO C 9x
1601 fesetexceptflag NEW: ISO C 9x
1602 fesetround NEW: ISO C 9x
1603 fetestexcept NEW: ISO C 9x
1604 feupdateenv NEW: ISO C 9x
1605 fflush_locked REMOVED
1606 ffsl NEW: GNU ext.
1607 ffsll NEW: GNU ext.
1608 fgetpos64 NEW: LFS
1609 fgets_unlocked NEW: GNU ext.
1610 fileno_locked REMOVED
1611 fma NEW: ISO C 9x
1612 fmaf NEW: ISO C 9x
1613 fmal NEW: ISO C 9x
1614 fmax NEW: ISO C 9x
1615 fmaxf NEW: ISO C 9x
1616 fmaxl NEW: ISO C 9x
1617 fmin NEW: ISO C 9x
1618 fminf NEW: ISO C 9x
1619 fminl NEW: ISO C 9x
1620 fmtmsg NEW: Unix98
1621 fopen64 NEW: LFS
1622 fputc_locked REMOVED
1623 fputs_unlocked NEW: GNU ext.
1624 fread_unlocked NEW: GNU ext.
1625 freopen64 NEW: LFS
1626 fseeko NEW: Unix98
1627 fsetpos64 NEW: LFS
1628 fstatfs64 NEW: LFS
1629 fstatvfs NEW: Unix98
1630 fstatvfs64 NEW: LFS
1631 ftello NEW: Unix98
1632 ftello64 NEW: LFS
1633 ftruncate64 NEW: LFS
1634 ftw64 NEW: LFS
1635 fwrite_unlocked NEW: GNU ext.
1636 gai_strerror NEW: IPv6
1637 gamma_r REMOVED
1638 gammaf_r REMOVED
1639 gammal_r REMOVED
1640 getchar_locked REMOVED
1641 getdate NEW: Unix98
1642 getdate_err NEW: Unix98
1643 getdate_r NEW: GNU ext.
1644 getmsg NEW: STREAMS
1645 getnameinfo NEW: IPv6
1646 getnetname NEW: Secure RPC
1647 getpmsg NEW: STREAMS
1648 getpt NEW: Unix98 PTY
1649 getrlimit64 NEW: LFS
1650 getutxent NEW: Unix98
1651 getutxid NEW: Unix98
1652 getutxline NEW: Unix98
1653 glob64 NEW: GNU ext.
1654 globfree64 NEW: GNU ext.
1655 gnu_get_libc_release NEW: GNU ext.
1656 gnu_get_libc_version NEW: GNU ext.
1657 grantpt NEW: Unix98 PTY
1658 host2netname NEW: Secure RPC
1659 iconv NEW: iconv
1660 iconv_close NEW: iconv
1661 iconv_open NEW: iconv
1662 if_freenameindex NEW: IPv6
1663 if_indextoname NEW: IPv6
1664 if_nameindex NEW: IPv6
1665 if_nametoindex NEW: IPv6
1666 in6addr_any NEW: IPv6
1667 in6addr_loopback NEW: IPv6
1668 inet6_isipv4mapped NEW: IPv6
1669 isastream NEW: STREAMS
1670 iswblank NEW: GNU ext.
1671 key_decryptsession NEW: Secure RPC
1672 key_decryptsession_pk NEW: Secure RPC
1673 key_encryptsession NEW: Secure RPC
1674 key_encryptsession_pk NEW: Secure RPC
1675 key_gendes NEW: Secure RPC
1676 key_get_conv NEW: Secure RPC
1677 key_secretkey_is_set NEW: Secure RPC
1678 key_setnet NEW: Secure RPC
1679 key_setsecret NEW: Secure RPC
1680 llrint NEW: ISO C 9x
1681 llrintf NEW: ISO C 9x
1682 llrintl NEW: ISO C 9x
1683 llround NEW: ISO C 9x
1684 llroundf NEW: ISO C 9x
1685 llroundl NEW: ISO C 9x
1686 log2 NEW: ISO C 9x
1687 log2f NEW: ISO C 9x
1688 log2l NEW: ISO C 9x
1689 lrint NEW: ISO C 9x
1690 lrintf NEW: ISO C 9x
1691 lrintl NEW: ISO C 9x
1692 lround NEW: ISO C 9x
1693 lroundf NEW: ISO C 9x
1694 lroundl NEW: ISO C 9x
1695 lseek64 NEW: LFS
1696 makecontext NEW: Unix98
1697 mempcpy NEW: GNU ext.
1698 mmap64 NEW: LFS
1699 moncontrol REMOVED
1700 modify_ldt NEW: kernel
1701 nan NEW: ISO C 9x
1702 nanf NEW: ISO C 9x
1703 nanl NEW: ISO C 9x
1704 nearbyint NEW: ISO C 9x
1705 nearbyintf NEW: ISO C 9x
1706 nearbyintl NEW: ISO C 9x
1707 netname2host NEW: Secure RPC
1708 netname2user NEW: Secure RPC
1709 nexttoward NEW: ISO C 9x
1710 nexttowardf NEW: ISO C 9x
1711 nexttowardl NEW: ISO C 9x
1712 nftw NEW: Unix98
1713 nftw64 NEW: LFS
1714 open64 NEW: LFS
1715 passwd2des NEW: Secure RPC
1716 pow10 NEW: GNU ext.
1717 pow10f NEW: GNU ext.
1718 pow10l NEW: GNU ext.
1719 pread NEW: Unix98
1720 pread64 NEW: LFS
1721 printf_size NEW: GNU ext.
1722 printf_size_info NEW: GNU ext.
1723 profil_counter REMOVED
1724 pthread_mutexattr_getkind_np REPLACED
1725 pthread_mutexattr_setkind_np REPLACED
1726 ptsname NEW: Unix98 PTY
1727 ptsname_r NEW: Unix98 PTY
1728 putc_locked REMOVED
1729 putchar_locked REMOVED
1730 putgrent NEW: GNU ext.
1731 putmsg NEW: STREAMS
1732 putpmsg NEW: STREAMS
1733 pututxline NEW: Unix98
1734 pwrite NEW: Unix98
1735 pwrite64 NEW: LFS
1736 readdir64 NEW: LFS
1737 readdir64_r NEW: LFS
1738 remquo NEW: ISO C 9x
1739 remquof NEW: ISO C 9x
1740 remquol NEW: ISO C 9x
1741 round NEW: ISO C 9x
1742 roundf NEW: ISO C 9x
1743 roundl NEW: ISO C 9x
1744 rtime NEW: GNU ext.
1745 scalbln NEW: ISO C 9x
1746 scalblnf NEW: ISO C 9x
1747 scalblnl NEW: ISO C 9x
1748 scandir64 NEW: LFS
1749 sendfile NEW: kernel
1750 setcontext NEW: Unix98
1751 setrlimit64 NEW: LFS
1752 setutxent NEW: Unix98
1753 sighold NEW: Unix98
1754 sigignore NEW: Unix98
1755 sigqueue NEW: POSIX.1b
1756 sigrelse NEW: Unix98
1757 sigset NEW: POSIX.1b
1758 sigtimedwait NEW: POSIX.1b
1759 sigwaitinfo NEW: POSIX.1b
1760 sincos NEW: GNU ext.
1761 sincosf NEW: GNU ext.
1762 sincosl NEW: GNU ext.
1763 statfs64 NEW: LFS
1764 statvfs NEW: Unix98
1765 statvfs64 NEW: LFS
1766 strcasestr NEW: GNU ext.
1767 strtoimax NEW: ISO C 9x
1768 strtoumax NEW: ISO C 9x
1769 strverscmp NEW: GNU ext.
1770 svcauthdes_stats NEW: Secure RPC
1771 svcunix_create NEW: sunrpc etx
1772 svcunixfd_create NEW: sunrpc ext
1773 swapcontext NEW: Unix98
1774 tcgetsid NEW: Unix98 PTY
1775 tdestroy NEW: GNU ext.
1776 tgamma NEW: ISO C 9x
1777 tgammaf NEW: ISO C 9x
1778 tgammal NEW: ISO C 9x
1779 tmpfile64 NEW: LFS
1780 trunc NEW: ISO C 9x
1781 truncate64 NEW: LFS
1782 truncf NEW: ISO C 9x
1783 truncl NEW: ISO C 9x
1784 umount2 NEW: kernel
1785 unlockpt NEW: Unix98 PTY
1786 updwtmpx NEW: Unix98
1787 user2netname NEW: Secure RPC
1788 utmpxname NEW: Unix98
1789 versionsort NEW: GNU ext.
1790 versionsort64 NEW: GNU ext.
1791 waitid NEW: Unix98
1792 wcscasecmp NEW: GNU ext.
1793 wcsncasecmp NEW: GNU ext.
1794 wcsnlen NEW: GNU ext.
1795 wcstoimax NEW: ISO C 9x
1796 wcstoll NEW: ISO C 9x
1797 wcstoull NEW: ISO C 9x
1798 wcstoumax NEW: ISO C 9x
1799 wcswcs NEW: Unix98
1800 wordexp NEW: POSIX.2
1801 wordfree NEW: POSIX.2
1802 write_profiling REMOVED
1803 xdecrypt NEW: Secure RPC
1804 xdr_authdes_cred NEW: Secure RPC
1805 xdr_authdes_verf NEW: Secure RPC
1806 xdr_cryptkeyarg NEW: Secure RPC
1807 xdr_cryptkeyarg2 NEW: Secure RPC
1808 xdr_cryptkeyres NEW: Secure RPC
1809 xdr_getcredres NEW: Secure RPC
1810 xdr_key_netstarg NEW: Secure RPC
1811 xdr_key_netstres NEW: Secure RPC
1812 xdr_keybuf NEW: Secure RPC
1813 xdr_keystatus NEW: Secure RPC
1814 xdr_netnamestr NEW: Secure RPC
1815 xdr_sizeof NEW: Secure RPC
1816 xdr_unixcred NEW: sunrpc ext
1817 xencrypt NEW: Secure RPC
1818 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1819 \f
1820 Version 2.0.6
1822 * more bug fixes
1824 \f
1825 Version 2.0.5
1827 * more bug fixes
1829 * inet_ntoa is thread-safe
1831 * updwtmp is moved from libutil to libc
1833 * rewrite of cbrt function
1835 * update of timezone data
1836 \f
1837 Version 2.0.4
1839 * more bug fixes
1840 \f
1841 Version 2.0.3
1843 * more bug fixes
1844 \f
1845 Version 2.0.2
1847 * more bug fixes
1849 * add atoll function
1851 * fix complex problems in Berkeley DB code
1853 * fix math functions
1854 \f
1855 Version 2.0.1
1857 * fixed lots of header problems (especially Linux/GNU specific)
1859 * dynamic loader preserves all registers
1861 * Roland McGrath provided support for handling of auxiliary objects in
1862 the ELF dynamic loader.
1864 * support for parallel builds is improved
1865 \f
1866 Version 2.0
1868 * GNU extensions are no longer declared by default. To enable them you
1869 must define the macro `_GNU_SOURCE' in your program or compile with
1870 `-D_GNU_SOURCE'.
1872 * The library has changed from using GNU ld symbol aliases to using weak
1873 symbols where available. The ELF object file format supports weak
1874 symbols; GNU ld also supports weak symbols in the a.out format. (There
1875 is also now support for other GNU ld extensions in ELF. Use the
1876 `--with-elf' option to configure to indicate you have ELF, and
1877 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1878 of many files which contained only symbol aliases, reducing the size of
1879 the source and the compiled library; many other files were renamed to
1880 less cryptic names previously occupied by the symbol alias files.
1881 There is a new header file <elf.h> for programs which operate on
1882 files in the ELF format.
1884 * Converted to Autoconf version 2, so `configure' has more options.
1885 Run `configure --help' to see the details.
1887 * The library can now be configured to build profiling, highly-optimized
1888 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1889 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1890 `configure' enable building these extra libraries. The shared library is
1891 built by default when using both ELF and GNU ld. When shared libraries
1892 are enabled, the new library `-ldl' is available for arbitrary run-time
1893 loading of shared objects; its interface is defined in <dlfcn.h>. The
1894 new header file <link.h> gives access to the internals of the run-time
1895 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1896 application of same name on other systems and it provides information
1897 about dynamically linked binaries.
1899 * The C library now provides the run-time support code for profiling
1900 executables compiled with `-pg'. Programs can control the profiling code
1901 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1902 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1903 the support for this file format was contributed by David Mosberger-Tang.
1905 * The math code has been replaced with a math library based on fdlibm from
1906 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1907 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1908 functions. The math functions now reside in a separate library, so
1909 programs using them will need to use `-lm' their linking commands.
1911 * John C. Bowman contributed optimized ix87 assembler inline functions.
1913 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1914 mechanism similar to that found in Solaris 2. This is now used for the
1915 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1916 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1917 file controls what services are used for each individual database. This
1918 works by loading shared libraries with names specified in `nsswitch.conf',
1919 so service modules can be changed or added at any time without even
1920 relinking any program. Currently there are the file, db, and NIS based
1921 NSS services available.
1923 * The new functions `strtoq' and `strtouq' parse integer values from
1924 strings, like `strtol' and `strtoul', but they return `long long int' and
1925 `unsigned long long int' values, respectively (64-bit quantities).
1927 * The new functions `strtof' and `strtold' parse floating-point values from
1928 strings, like `strtod', but they return `float' and `long double' values,
1929 respectively (on some machines `double' and `long double' are the same).
1931 * Ulrich Drepper has contributed new implementations of the floating-point
1932 printing and reading code used in the `printf' family of functions and
1933 `strtod', `strtof', and `strtold'. These new functions are perfectly
1934 accurate, and much faster than the old ones.
1936 * The implementation of the POSIX locale model was completely rewritten by
1937 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1938 to compile the POSIX locale definition.
1940 * The former dummy implementations of the strcoll and strxfrm function are
1941 now replaced by fully functional code contributed by Ulrich Drepper. The
1942 collation information comes from the POSIX locale definitions.
1944 * The new header <langinfo.h> defines an interface for accessing
1945 various locale-dependent data (using the locale chosen with `setlocale').
1947 * Ulrich Drepper has contributed a new suite of functions for operation on
1948 wide-character and multibyte-character strings, in <wchar.h>;
1949 and classification and case conversion of wide characters, in <wctype.h>.
1950 These new functions are conforming to the ISO C, Amendement 1 specification.
1952 * There is now a second implementation of the standard I/O library available.
1953 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1954 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1956 * You can now use positional parameter specifications in format strings
1957 for the `printf' and `scanf' families of functions. For example,
1958 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1959 ``Number 6, Mr Jones''. This is mainly useful when providing different
1960 format strings for different languages, whose grammars may dictate
1961 different orderings of the values being printed. To support this
1962 feature, the interface for `register_printf_handler' has changed; see
1963 the header file <printf.h> for details.
1965 * The `printf' and `scanf' families of functions now understand a new
1966 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1967 to group numbers as indicated by the locale; for `scanf' and friends, this
1968 says to accept as valid only a number with all the proper grouping
1969 separators in the right places. In the default "C" locale, numbers are
1970 not grouped; but locales for specific countries will define the usual
1971 conventions (i.e. separate thousands with `,' in the US locale).
1973 * The pgrp functions have been regularized, slightly incompatibly but much
1974 less confusingly. The core functions are now `getpgid' and `setpgid',
1975 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1976 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1977 provided for compatibility. There is no longer an incompatible `getpgrp'
1978 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1980 * The new header file <fts.h> and suite of functions simplify programs that
1981 operate on directory trees. This code comes from 4.4 BSD.
1983 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1984 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1985 NSS scheme used in glibc.
1987 * There is a new malloc debugging hook `__memalign_hook'.
1989 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1990 `unsigned int' in <sys/types.h>. These are for compatibility only and
1991 their use is discouraged.
1993 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1994 done differently, so that it works even without GNU ld.
1996 * New function `euidaccess' checks allowed access to a file like `access',
1997 but using the effective IDs instead of the real IDs.
1999 * The time zone data files have been updated for the latest and greatest
2000 local time conventions of the countries of the world.
2002 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2003 see <dirent.h>.
2005 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2006 for formatting floating-point numbers. They are provided only for
2007 compatibility; new programs should use `sprintf' instead. There are
2008 also equivalent function for the `long double' floating-point type and
2009 all functions also exist in a reentrant form.
2011 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2012 functions for maintaining the login-record files (primarily of use to
2013 system programs such as `login'), and convenient functions for
2014 allocating and initializing a pseudo-terminal (pty) device.
2016 * Ulrich Drepper has contributed new support for System V style
2017 shared memory and IPC on systems that support it.
2019 * Ulrich Drepper has contributed several miscellaneous new functions found
2020 in System V: The `hsearch' family of functions provide an effective
2021 implementation of hash tables; `a64l' and `l64a' provide a very simple
2022 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2023 number generator.
2025 * Ulrich Drepper has contributed new reentrant counterparts for the
2026 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2028 * Ulrich Drepper has contributed new, highly-optimized versions of several
2029 string functions for the i486/Pentium family of processors.
2031 * Ulrich Drepper has updated the Linux-specific code, based largely
2032 on work done in Hongjiu Lu's version of GNU libc for Linux.
2033 The GNU library now supports Linux versions 2.0.10 and later,
2034 using the ELF object file format (i[3456]86-*-linux).
2036 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2038 * David Mosberger-Tang and Richard Henderson have ported the C library
2039 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2040 dynamic linking support for ELF/Alpha.
2042 * Richard Henderson contributed several Alpha optimized assembler function
2043 for arithmetic and string handling.
2045 * Ulrich Drepper has contributed a new set of message catalog functions to
2046 support multiple languages using the <libintl.h> interface, for use with
2047 his new package GNU gettext. Translation volunteers have contributed
2048 catalogs of the library's messages in Spanish, German, and Korean.
2050 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2051 program and the `catgets' function for reading the catalog files it
2052 creates. (The <libintl.h> interface is preferred; we include the
2053 <nl_types.h> interface using `catgets' only for source compatibility with
2054 programs already written to use it.)
2056 * New header file <values.h> gives SVID-compatible names for <limits.h>
2057 constants.
2059 * Various new macros, declarations, and small header files for compatibility
2060 with 4.4 BSD.
2062 * New function `group_member' is a convenient way to check if a process has
2063 a given effective group ID.
2065 * When using GCC 2.7 and later, the socket functions are now declared in a
2066 special way so that passing an argument of type `struct sockaddr_in *',
2067 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2068 `struct sockaddr *' type, does not generate a type-clash warning.
2070 * New function `error' declared in header file <error.h> is a convenient
2071 function for printing error messages and optionally exiting; this is the
2072 canonical function used in GNU programs. The new functions `err', `warn',
2073 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2074 doing the same thing.
2076 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2077 POSIX.2 `glob' function to do ~ and {...} expansion.
2079 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2080 `clearenv' which is used in POSIX.9 is also available.
2082 * New function `getsid' returns session ID number on systems that support it.
2084 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2085 files <db.h> and <mpool.h> provide a rich set of functions for several
2086 types of simple databases stored in memory and in files, and <ndbm.h> is
2087 an old `ndbm'-compatible interface using the `db' functions. Link with
2088 `-ldb' to get these functions.
2090 * New macro `strdupa' copies a string like `strdup', but uses local stack
2091 space from `alloca' instead of dynamic heap space from `malloc'.
2093 * New function `strnlen' is like `strlen' but searches only a given maximum
2094 number of characters for the null terminator. `stpncpy', `strndup' and
2095 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2096 function.
2098 * New function `statfs' in header <sys/statfs.h>.
2100 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2101 provide convenient functions for operating on blocks of null-terminated
2102 strings.
2104 * A new suite of functions in <utmp.h> handle all the details of reading
2105 and writing the utmp file.
2107 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2108 Thorsten Kukuk.
2110 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2111 completely POSIX compliant and also implemented the extended functionality
2112 to handle alternate digit representation and alternate era date formats.
2114 * Ulrich Drepper provided an implementation of the `strptime' function
2115 defined in XPG4.2 which transforms a string into a `struct tm' value.
2117 * Paul Eggert provided the tzselect shell script as part of the timezone
2118 code. The shell script makes it easy to select the correct timezone
2119 specification.
2121 * The implementation of the malloc family of functions is completely replaced
2122 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2123 The implementation uses the mmap function (if available) and it is
2124 optimized for the use in multi threaded programs.
2126 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2127 functions. This new functionality is usable by specifying a special
2128 salt string and it is compatible with implementation on *BSD systems.
2130 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2131 `getsubopt' to handle second level command line options, `bsd_signal'
2132 to access BSD style `signal' functionality, the obsolete `regexp' style
2133 expression matcher.
2135 * the `lchown' function is available on system which support this
2136 functionality.
2138 * The implementation of the shadow password handling function was contributed
2139 by Ulrich Drepper.
2141 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2143 * POSIX.1g support was added. The <sys/select.h> header is available,
2144 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2145 implementation of `getaddrinfo'.
2146 \f
2147 Version 1.09
2149 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2151 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2152 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2154 * The new function `daemon' from 4.4 BSD is useful for server programs that
2155 want to put themselves in the background.
2157 * Joel Sherrill has contributed support for several standalone boards that
2158 run without an operating system.
2160 * `printf', `scanf' and friends now accept a `q' type modifier for long
2161 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2163 * All of the code taken from BSD (notably most of the math and networking
2164 routines) has been updated from the BSD 4.4-Lite release.
2166 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2168 * The new functions `getdomainname' and `setdomainname' fetch or change the
2169 YP/NIS domain name. These are system calls which exist on systems which
2170 have YP (aka NIS).
2172 * The time zone data files have been updated for the latest international
2173 conventions.
2175 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2176 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2177 \f
2178 Version 1.08
2180 * The C library now includes support for Sun RPC, from Sun's free
2181 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2182 are included. (There is still no support for YP.)
2184 * Tom Quinn has contributed a port of the C library to SGI machines running
2185 Irix 4 (mips-sgi-irix4).
2187 * The new `lockf' function is a simplified interface to the locking
2188 facilities of `fcntl', included for compatibility.
2190 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2192 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2194 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2195 compatibility.
2197 * The error message printed by `assert' for a failed assertion now includes
2198 the name of the program (if using GNU ld) and the name of the calling
2199 function (with versions of GCC that support this).
2201 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2203 * The library now includes the <sys/mman.h> header file and memory
2204 management functions `mmap', `munmap', `mprotect', `msync', and
2205 `madvise', on systems that support those facilities.
2207 * The interface for `mcheck' has changed slightly: the function called to
2208 abort the program when an allocation inconsistency is detected now takes
2209 an argument that indicates the type of failure. The new function
2210 `mprobe' lets you request a consistency check for a particular block at
2211 any time (checks are normally done only when you call `free' or `realloc'
2212 on a block).
2214 * It is now possible to easily cross-compile the C library, building on one
2215 system a library to run on another machine and/or operating system. All
2216 you need to do is set the variable `HOST_CC' in `configparms' to the
2217 native compiler for programs to run on the machine you are building on (a
2218 few generator programs are used on Unix systems); set `CC' to the
2219 cross-compiler.
2221 * The new function `fexecve' (only implemented on the GNU system) executes
2222 a program file given a file descriptor already open on the file.
2223 \f
2224 Version 1.07
2226 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2227 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2229 * You can set the variable `libprefix' in `configparms' to specify a prefix
2230 to be prepended to installed library files; this makes it easy to install
2231 the GNU C library to be linked as `-lgnuc' or whatever.
2233 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2234 copies a limited number of characters from a string, and returns the
2235 address of the last character written.
2237 * You no longer need to check for whether the installed `stddef.h' is
2238 compatible with the GNU C library. configure now checks for you.
2240 * You can now define a per-stream `fileno' function to convert the
2241 stream's cookie into an integral file descriptor.
2243 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2244 allocates zero bytes of storage, and returns a unique pointer which
2245 you can pass to `realloc' or `free'. The behavior is undefined if
2246 you dereference this pointer.
2248 * The C library now runs on Sony NEWS m68k machines running either
2249 NewsOS 3 or NewsOS 4.
2251 * The new `syscall' function is a system-dependent primitive function
2252 for invoking system calls. It has the canonical behavior on Unix
2253 systems, including unreliable return values for some calls (such as
2254 `pipe', `fork' and `getppid').
2256 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2257 to `EAGAIN', which is the preferred name. On systems whose kernels
2258 use two distinct codes, the C library now translates EWOULDBLOCK to
2259 EAGAIN in every system call function.
2260 \f
2261 Version 1.06
2263 * The GNU C Library Reference Manual is now distributed with the library.
2264 `make dvi' will produce a DVI file of the printed manual.
2265 `make info' will produce Info files that you can read on line using C-h i
2266 in Emacs or the `info' program.
2267 Please send comments on the manual to bug-glibc-manual@gnu.org.
2269 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2271 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2273 * Jason Merrill has contributed a port to the Sequent Symmetry running
2274 Dynix version 3 (i386-sequent-dynix).
2276 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2277 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2279 * New function `memory_warnings' lets you arrange to get warnings when
2280 malloc is running out of memory to allocate, like Emacs gives you.
2282 * The C library now contains the relocating allocator used in Emacs 19 for
2283 its editing buffers. This allocator (ralloc) minimizes allocation
2284 overhead and fragmentation by moving allocated regions around whenever it
2285 needs to. You always refer to a ralloc'd region with a "handle" (a
2286 pointer to a pointer--an object of type `void **').
2288 * There is a new `printf' format: `%m' gives you the string corresponding
2289 to the error code in `errno'.
2291 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2292 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2293 pass, the `a' modifier says to fill in a `char **' you pass with a
2294 malloc'd string.
2296 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2297 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2298 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2300 * `mkstemp' is a traditional Unix function to atomically create and open a
2301 uniquely-named temporary file.
2302 \f
2303 Version 1.05
2305 * The standard location for the file that says what the local timezone is
2306 has changed again. It is now `/usr/local/etc/localtime' (or more
2307 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2309 * The distribution no longer contains any files with names longer than 14
2310 characters.
2312 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2313 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2315 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2316 \f
2317 Version 1.04
2319 * The configuration process has changed quite a bit. The `configure'
2320 script is now used just like the configuration scripts for other GNU
2321 packages. The `sysdeps' directory hierarchy is much rearranged.
2322 The file `INSTALL' explains the new scheme in detail.
2324 * The header files no longer need to be processed into ANSI C and
2325 traditional C versions. There is just one set of files to install, and
2326 it will work with ANSI or old C compilers (including `gcc -traditional').
2328 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2329 MIPS DECStation running Ultrix 4.
2331 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2332 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2333 made itself into a shared library.
2335 * Yet further improved support for the i386, running 4.3 BSD-like systems
2336 (such as Mach 3 with the Unix single-server), or System V.
2338 * New function `strncasecmp' to do case-insensitive string comparison
2339 with limited length.
2341 * New function `strsep' is a reentrant alternative to `strtok'.
2343 * New functions `scandir' and `alphasort' for searching directories.
2345 * New function `setenv' is a better interface to `putenv'.
2347 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2348 function for traversing a directory tree.
2350 * The GNU obstack package is now also part of the C library.
2351 The new function `open_obstack_stream' creates a stdio stream that
2352 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2353 formatted output directly to an obstack.
2355 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2356 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2358 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2360 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2361 things to your strings.
2363 * There are some new test programs: test-fseek, testmb, and testrand.
2365 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2366 These ports are not finished, but are a good starting place for really
2367 supporting those systems.
2369 * `/etc/localtime' is now the standard location for the file that says what
2370 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2371 This follows the general principle that `/etc' is the place for all local
2372 configuration files.
2374 * The C library header files now use `extern "C"' when used by the C++
2375 compiler, so the C library should now work with C++ code.
2377 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2378 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2379 in <strings.h>.)
2381 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2382 function which uses the `merge sort' algorithm, and is said to be
2383 significantly faster than the old GNU `qsort' function. Merge sort is
2384 now the standard `qsort' function. The new algorithm can require a lot
2385 of temporary storage; so, the old sorting function is called when the
2386 required storage is not available.
2388 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2389 provides the Unix `crypt' function, plus some other entry points.
2391 * The code and header files taken from 4.4 BSD have been updated with the
2392 latest files released from Berkeley.
2393 \f
2394 ----------------------------------------------------------------------
2395 Copyright information:
2397 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2399 Permission is granted to anyone to make or distribute verbatim copies
2400 of this document as received, in any medium, provided that the
2401 copyright notice and this permission notice are preserved,
2402 thus giving the recipient permission to redistribute in turn.
2404 Permission is granted to distribute modified versions
2405 of this document, or of portions of it,
2406 under the above conditions, provided also that they
2407 carry prominent notices stating who last changed them.
2408 \f
2409 Local variables:
2410 version-control: never
2411 fill-column: 76
2412 End: