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1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
7 \f
8 Version 2.20
10 * The following bugs are resolved with this release:
12 15894.
14 * The am33 port, which had not worked for several years, has been removed
15 from ports.
16 \f
17 Version 2.19
19 * The following bugs are resolved with this release:
21 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
22 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
23 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
24 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
25 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
26 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
27 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
28 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
29 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
30 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
31 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
32 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
33 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
34 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
35 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
36 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16384, 16385, 16386,
37 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430, 16431,
38 16453, 16474, 16506, 16510, 16529
40 * Slovenian translations for glibc messages have been contributed by the
41 Translation Project's Slovenian team of translators.
43 * The public headers no longer use __unused nor __block. This change is to
44 support compiling programs that are derived from BSD sources and use
45 __unused internally, and to support compiling with Clang's -fblock
46 extension which uses __block.
48 * CVE-2012-4412 The strcoll implementation caches indices and rules for
49 large collation sequences to optimize multiple passes. This cache
50 computation may overflow for large collation sequences and may cause a
51 stack or buffer overflow. This is now fixed to use a slower algorithm
52 which does not use a cache if there is an integer overflow.
54 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
55 rules for large collation sequences to optimize multiple passes and falls
56 back to alloca if malloc fails, resulting in a possible stack overflow.
57 The implementation now falls back to an uncached collation sequence lookup
58 if malloc fails.
60 * CVE-2013-4788 The pointer guard used for pointer mangling was not
61 initialized for static applications resulting in the security feature
62 being disabled. The pointer guard is now correctly initialized to a
63 random value for static applications. Existing static applications need
64 to be recompiled to take advantage of the fix (bug 15754).
66 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
67 to the d_name member of struct dirent, or omit the terminating NUL
68 character. (Bugzilla #14699).
70 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
71 aligned_alloc functions could allocate too few bytes or corrupt the
72 heap when passed very large allocation size values (Bugzilla #15855,
73 #15856, #15857).
75 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
76 for AF_INET6 has been fixed (Bugzilla #16072).
78 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
79 pap_CW, quz_PE, the_NP.
81 * Substantially revised locales: gd_GB, ht_HT
83 * The LC_ADDRESS field was updated to support country_car for almost all
84 supported locales.
86 * ISO 1427 definitions were updated.
88 * ISO 3166 definitions were updated.
90 * The localedef utility now supports --big-endian and --little-endian
91 command-line options to generate locales for a different system from that
92 for which the C library was built.
94 * Binary locale files now only depend on the endianness of the system for
95 which they are generated and not on other properties of that system. As a
96 consequence, binary files generated with new localedef may be incompatible
97 with old versions of the GNU C Library, and binary files generated with
98 old localedef may be incompatible with this version of the GNU C Library,
99 in the following circumstances:
101 + Locale files may be incompatible on m68k systems.
103 + Locale archive files (but not separate files for individual locales) may
104 be incompatible on systems where plain "char" is signed.
106 * The configure option --disable-versioning has been removed. Builds with
107 --disable-versioning had not worked for several years.
109 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
110 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
112 * SystemTap probes for malloc have been introduced.
114 * SystemTap probes for slow multiple precision fallback paths of
115 transcendental functions have been introduced.
117 * Support for powerpc64le has been added.
119 * The soft-float powerpc port now supports e500 processors.
121 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
123 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
124 set of header declarations that are enabled by default, even when other
125 feature test macros or compiler options such as -std=c99 would otherwise
126 disable some of those declarations.
128 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
129 conflict with POSIX. The libbsd-compat library (which was a dummy library
130 that did nothing) has also been removed.
132 * Preliminary documentation about Multi-Thread, Async-Signal and
133 Async-Cancel Safety has been added.
134 \f
135 Version 2.18
137 * The following bugs are resolved with this release:
139 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
140 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
141 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
142 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
143 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
144 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
145 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
146 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
147 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
148 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
149 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
150 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
151 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
152 15759.
154 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
155 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
156 Distributions can re-enable building and using pt_chown via the new configure
157 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
158 considerable security risks and should only be used if the distribution
159 understands and accepts the risks.
161 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
162 #15078).
164 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
165 fixed (Bugzilla #15330).
167 * Add support for calling C++11 thread_local object destructors on thread
168 and program exit. This needs compiler support for offloading C++11
169 destructor calls to glibc.
171 * Improved worst case performance of libm functions with double inputs and
172 output.
174 * Support for priority inherited mutexes in pthread condition variables on
175 non-x86 architectures.
177 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
179 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
181 * Optimized string functions for ARM. Implemented by Will Newton and
182 Richard Henderson.
184 * Optimized libm functions for SPARC. Implemented by David S. Miller.
186 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
187 Richard Henderson.
189 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
190 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
192 * Added a benchmark framework to track performance of functions in glibc.
194 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
195 It is based on draft TS 18661 and currently enabled as a GNU extension.
197 * On Linux, the clock function now uses the clock_gettime system call
198 for improved precision, rather than old times system call.
200 * Added support for version-3 tz format files. This is needed when using
201 the tz database release 2013e or later, and affects a few unusual cases --
202 currently only TZ='America/Godthab' for time stamps after 2037.
204 * Added new API functions pthread_getattr_default_np and
205 pthread_setattr_default_np to get and set the default pthread
206 attributes of a process.
208 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
209 This may improve lock scaling of existing programs on TSX capable systems.
210 When the --enable-lock-elision=yes parameter is specified at configure
211 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
212 mutexes.
214 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
215 availability). Implemented by Ryan S. Arnold.
217 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
218 \f
219 Version 2.17
221 * The following bugs are resolved with this release:
223 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
224 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
225 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
226 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
227 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
228 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
229 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
230 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
231 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
232 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
233 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
234 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
235 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
236 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
237 14879, 14889, 14893, 14898, 14914.
239 * Optimization of memcpy for MIPS.
241 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
242 EMFILE has been fixed (Bugzilla #14889).
244 * The add-on ports collection is now distributed in the "ports" subdirectory
245 of the main GNU C Library distribution, rather than separately.
247 * Port to ARM AArch64 contributed by Linaro.
249 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
250 Optimized versions of memcpy, memset, and memcmp added for System z10 and
251 zEnterprise z196.
252 Implemented by Andreas Krebbel.
254 * The new function secure_getenv allows secure access to the environment,
255 returning NULL if running in a SUID/SGID process. This function replaces
256 the internal function __secure_getenv.
258 * SystemTap static probes have been added into the dynamic linker.
259 Implemented by Gary Benson.
261 * Optimizations of string functions strstr, strcasestr and memmem.
262 Implemented by Maxim Kuvyrkov.
264 * The minimum Linux kernel version that this version of the GNU C Library
265 can be used with is 2.6.16.
267 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
268 powerpc POWER7. Implemented by Will Schmidt.
270 * New configure option --disable-nscd builds the C library such that it
271 never attempts to contact the Name Service Caching Daemon (nscd).
272 New configure option --disable-build-nscd avoids building nscd itself;
273 this is the default if --disable-nscd is used.
275 * Improved support for cross-compilation, including cross-testing and
276 bootstrap builds without a previously built glibc.
278 * Several testsuite tests are now able to test multiple IFUNC variants of an
279 interface, rather than just testing the one that would be chooen by
280 default.
282 * New configure options --with-bugurl and --with-pkgversion, for
283 distributors to use to embed their bug-reporting and package version
284 information in --help and --version output.
286 * The ttyname and ttyname_r functions on Linux now fall back to searching for
287 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
288 allows creation of chroots without the procfs mounted on /proc.
290 * The `crypt' function now fails if passed salt bytes that violate the
291 specification for those values. On Linux, the `crypt' function will
292 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
293 enabled, and fail on encrypted strings using the MD5 or DES algorithm
294 when the mode is enabled.
296 * The `clock_*' suite of functions (declared in <time.h>) is now available
297 directly in the main C library. Previously it was necessary to link with
298 -lrt to use these functions. This change has the effect that a
299 single-threaded program that uses a function such as `clock_gettime' (and
300 is not linked with -lrt) will no longer implicitly load the pthreads
301 library at runtime and so will not suffer the overheads associated with
302 multi-thread support in other code such as the C++ runtime library.
304 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
305 sat_IN, and szl_PL.
306 \f
307 Version 2.16
309 * The following bugs are resolved with this release:
311 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
312 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
313 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
314 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
315 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
316 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
317 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
318 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
319 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
320 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
321 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
322 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
323 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
324 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
325 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
326 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
327 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
328 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
329 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
330 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
331 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
332 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
333 14277, 14278.
335 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
336 configuring glibc with:
337 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
338 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
339 Implemented by H.J. Lu.
341 * ISO C11 support:
343 + define static_assert
345 + do not declare gets
347 + declare at_quick_exit and quick_exit also for ISO C11
349 + aligned_alloc. NB: The code is deliberately allows the size parameter
350 to not be a multiple of the alignment. This is a moronic requirement
351 in the standard but it is only a requirement on the caller, not the
352 implementation.
354 + timespec_get added
356 + uchar.h support added
358 + CMPLX, CMPLXF, CMPLXL added
360 Implemented by Ulrich Drepper.
362 * Support for the IA-64 has been moved to ports.
364 * Remove support for anything but ELF binary format
366 * Checking versions of poll, ppoll added.
367 Implemented by Ulrich Drepper.
369 * More generic and 64-bit performance optimizations to math functions.
370 Implemented by Ulrich Drepper.
372 * New configure option --enable-obsolete-rpc makes the deprecated RPC
373 headers and functions available at compile time as they were before
374 version 2.14. This option will be removed at some time in the future
375 after the TI-RPC library becomes fully sufficient for the needs of
376 existing applications.
378 * Compatibility code for Linux kernel versions before 2.4 has been removed.
379 Note that glibc is not expected to work with any Linux kernel version
380 before 2.6.
382 * New header <sys/auxv.h> and function getauxval allowing easy access to
383 the AT_* key-value pairs passed from the Linux kernel. The header also
384 defines the HWCAP_* bits associated with the AT_HWCAP key.
386 * New locales: mag_IN
388 * New configure option --enable-systemtap builds SystemTap static probes
389 into libc for setjmp and longjmp and into libpthread for various operations.
390 So far the setjmp/longjmp probes and some of the libpthread probes are
391 provided only for i*86 and x86_64.
392 Implemented by Roland McGrath and Rayson Ho.
394 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
396 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
397 and Will Schmidt.
399 * More optimized functions for SPARC. Implemented by David S. Miller.
401 * Improved support for cross-compilation, especially bootstrap builds
402 without a previously built glibc.
404 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
405 Chris Metcalf from Tilera.
407 * Support for the old ARM ABI has been removed from ports. Only the EABI is
408 now supported for ARM processors.
410 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
411 as the name of the dynamic linker, to distinguish it from the
412 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
414 * Support for CRIS has been removed from ports.
416 * A new class of installed header has been documented for low-level
417 platform-specific functionality. PowerPC added the first instance with a
418 function to provide time base register access. Contributed by Tulio
419 Magno Quites Machado Filho.
421 * ix86 configurations now install header files that are consistent with
422 what x86-64 configurations install. These same header files can be used
423 for -m32, -m64, or -mx32 builds.
424 Contributed by H.J. Lu.
426 * Math library bug fixes. A thorough audit of all open math library bugs was
427 conducted by Joseph Myers. Significant progress was made on many math
428 library bugs resulting in more accurate exceptions and function results.
429 Many thanks to all those that contributed including Andreas Jaeger for his
430 patch review and work on the x87 trigonometric instruction issues.
432 * Timezone data is no longer installed. Timezone-related binaries and scripts
433 will continue to be installed. Users should obtain their timezone data from
434 their distribution provider or from the tzdata package at
435 <ftp://munnari.oz.au/pub/>.
436 \f
437 Version 2.15
439 * The following bugs are resolved with this release:
441 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
442 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
443 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
444 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
445 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
446 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
447 13484, 13506, 13515, 13523, 13524, 13538, 13540
449 * New program pldd to list loaded object of a process
450 Implemented by Ulrich Drepper.
452 * Add nss_db support back to glibc. No more dependency on Berkeley db
453 and support for initgroups lookups.
454 Implemented by Ulrich Drepper.
456 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
457 Contributed by HJ Lu.
459 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
460 Contributed by HJ Lu.
462 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
463 on x86-32 and x86-64.
464 Contributed by Liubov Dmitrieva.
466 * Optimized strchr and strrchr for SSE on x86-32.
467 Contributed by Liubov Dmitrieva.
469 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
470 for x86-64 and x86-32.
471 Contributed by Liubov Dmitrieva.
473 * New interfaces: scandirat, scandirat64
474 Implemented by Ulrich Drepper.
476 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
477 Implemented by Ulrich Drepper.
479 * nscd now also caches the netgroup database.
480 Implemented by Ulrich Drepper.
482 * Integrate libm with gcc's -ffinite-math-only option.
483 Implemented by Ulrich Drepper.
485 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
486 to math functions. Implemented by Ulrich Drepper.
488 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
489 Implemented by Ulrich Drepper.
491 * New Linux interfaces: process_vm_readv, process_vm_writev
493 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
494 Implemented by Ulrich Drepper.
496 * Optimized nearbyint and strcasecmp for PPC.
497 Implemented by Adhemerval Zanella.
499 * New locales: bho_IN, unm_US, es_CU, ta_LK
500 \f
501 Version 2.14
503 * The following bugs are resolved with this release:
505 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
506 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
507 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
508 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
509 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
510 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
511 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
512 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
513 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
514 12795, 12811, 12813, 12814, 12841
516 * The RPC implementation in libc is obsoleted. Old programs keep working
517 but new programs cannot be linked with the routines in libc anymore.
518 Programs in need of RPC functionality must be linked against TI-RPC.
519 The TI-RPC implementation is IPv6 enabled and there are other benefits.
521 Visible changes of this change include (obviously) the inability to link
522 programs using RPC functions without referencing the TI-RPC library and the
523 removal of the RPC headers from the glibc headers.
524 Implemented by Ulrich Drepper.
526 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
527 syncfs, setns, sendmmsg
529 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
530 yue_HK, lij_IT, mhr_RU
532 * New encodings: CP770, CP771, CP772, CP773, CP774
534 * New program sotruss to trace calls through PLTs
535 Implemented by Ulrich Drepper.
537 * The malloc hook implementation is marked deprecated and will be removed
538 from the default implementation in the next version. The design never
539 worked ever since the introduction of threads. Even programs which do
540 not create threads themselves can use multiple threads created internally.
541 \f
542 Version 2.13
544 * The following bugs are resolved with this release:
546 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
547 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
548 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
549 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
550 12378, 12394, 12397
552 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
554 * POWER7 optimizations: memset, memcmp, strncmp
556 * New optimized string functions for x86-64: strnlen (SSE2),
557 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
558 Implemented by Ulrich Drepper.
559 \f
560 Version 2.12
562 * The following bugs are resolved with this release:
564 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
565 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
566 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
567 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
568 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
569 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
570 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
571 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
573 * New interfaces: pthread_getname_np, pthread_setname_np
575 * New Linux interface: recvmmsg
577 * STT_GNU_IFUNC implemented for Sparc by David Miller.
579 * The dynamic linker now recognizes supported ABI versions from the
580 EI_ABIVERSION field in the ELF header.
581 Implemented by Ulrich Drepper.
583 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
584 will not be used to fill in password fields in the passwd.byname replies.
585 Instead it is used to synthesize the shadow.byname table, should it be
586 missing. This is a useful mode in some installations involving Solaris.
587 Implemented by Ulrich Drepper.
589 * New locales: kok_IN, sq_MK, cv_RU
590 \f
591 Version 2.11
593 * The following bugs are resolved with this release:
595 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
596 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
597 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
598 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
599 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
600 10789, 10817, 10823, 10840, 10847
602 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
603 mkostemps64
604 Implemented by Ulrich Drepper.
606 * Checking version of longjmp added that fails if an uninitialized stack
607 frame would be created. Implemented by Ulrich Drepper.
609 * STT_GNU_IFUNC is now supported in static executables.
610 Implemented by H.J. Lu.
612 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
614 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
615 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
616 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
617 Contributed by H.J. Lu.
619 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
620 Implemented by Ulrich Drepper.
622 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
623 strstr, strcasestr.
624 Contributed by H.J. Lu.
626 * Support for fma instruction in AVX on x86-64.
627 Implemented by H.J. Lu and Ulrich Drepper.
629 * AVX support in x86-64 auditing support in ld.so.
630 Implemented by H.J. Lu.
632 * STB_GNU_UNIQUE support added.
633 Implemented by Ulrich Drepper.
635 * Implement second fallback mode for optimized DNS lookup for even more
636 broken environments. If two requests from the same port are not
637 handled correctly close the socket and open a new one before sending
638 the second request. The 'single-request-reopen' option in /etc/resolv.conf
639 can be used to select this mode right away, instead of rediscovering the
640 necessity is every process again.
641 Implemented by Ulrich Drepper.
643 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
644 Implemented by Adam Tkac.
646 * Optimized iconv conversions for S390x.
647 Implemented by Andreas Krebbel.
649 * Using condvars with PI mutexes is now more efficient due to kernel
650 support for requeueing to PI futexes. NPTL support added for x86-64.
651 Implemented by Ulrich Drepper.
653 * New locales: ps_AF, my_MM
654 \f
655 Version 2.10
657 * The following bugs are resolved with this release:
659 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
660 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
661 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
662 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
663 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
665 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
666 Implemented by Ulrich Drepper.
668 * New Linux interfaces: accept4, fallocate, fallocate64.
669 Implemented by Ulrich Drepper.
671 * Correct declarations of string function when used in C++ code. This
672 could lead to compile errors for invalid C++ code.
674 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
675 now in POSIX.
677 * New POSIX 2008 interface: psiginfo
678 Implemented by Ulrich Drepper.
680 * New ISO C++1x interfaces: quick_exit, at_quick_exit
681 Implemented by Ulrich Drepper.
683 * Support for selecting between multiple function definitions at runtime
684 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
686 * The libcrypt library can now use the hash function implementations in
687 NSS. Implemented by Ulrich Drepper.
689 * The malloc implementation can be compiled to be less memory efficient
690 but higher performing in multi-threaded programs.
691 Implemented by Ulrich Drepper.
693 * New locales: nan_TW@latin, ks_IN
695 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
696 Implemented by Ulrich Drepper.
698 * Extended printf hook support. It is possible to use user-defined types
699 and extend existing format specifiers.
700 Implemented by Ulrich Drepper.
702 * Handling for group shadow files has been added.
703 Implemented by Ulrich Drepper.
705 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
706 servers (the case, e.g., for some people using the built-in DNS
707 server in ADSL modems/routers). There is a once-per-process timeout
708 in case of a broken server. To avoid it, users can run nscd or put
709 'options single-request' in /etc/resolv.conf.
710 Implemented by Ulrich Drepper.
711 \f
712 Version 2.9
714 * The following bugs are resolved with this release:
716 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
717 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
718 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
719 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
720 6968, 6974, 6980, 6995, 7008, 7009, 7029
722 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
723 up at the same time. Implemented by Ulrich Drepper.
725 * TLS descriptors for LD and GD on x86 and x86-64.
726 Implemented by Alexandre Oliva.
728 * getaddrinfo now handles DCCP and UDPlite.
729 Implemented by Ulrich Drepper.
731 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
732 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
733 Implemented by Ulrich Drepper.
735 * New implementation of memmem, strstr, and strcasestr which is O(n).
736 Implemented by Eric Blake.
738 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
740 * Implement "e" option for popen to open file descriptor with the
741 close-on-exec flag set. Implemented by Ulrich Drepper.
743 * Implement "b" mode for fmemopen. In this mode writes writes don't
744 implicitly add a NUL byte and seeks from the end of the buffer really
745 use the buffer end, not the string length as the basis.
746 Implemented by Ulrich Drepper.
748 * Many functions, exported and internal, now atomically set the close-on-exec
749 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
751 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
752 Sinhala)
753 Implemented by Pravin Satpute.
755 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
756 \f
757 Version 2.8
759 * The following bugs are resolved with this release:
761 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
762 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
763 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
764 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
765 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
766 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
767 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
769 * New locales: bo_CN, bo_IN, shs_CA.
771 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
773 * Sorting rules for some Indian languages (Devanagari and Gujarati).
774 Implemented by Pravin Satpute.
776 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
778 * nscd caches now all timeouts for DNS entries
779 Implemented by Ulrich Drepper.
781 * nscd is more efficient and wakes up less often.
782 Implemented by Ulrich Drepper.
784 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
785 vdprintf, and obstack_vprintf.
786 Implemented by Jakub Jelinek.
788 * Faster memset for x86-64.
789 Implemented by Harsha Jagasia and H.J. Lu.
791 * Faster memcpy on x86.
792 Implemented by Ulrich Drepper.
794 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
795 Implemented by Ulrich Drepper.
797 * Faster sqrt and sqrtf implemention for some PPC variants.
798 Implemented by Steven Munroe.
799 \f
800 Version 2.7
802 * The following bugs are resolved with this release:
804 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
805 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
806 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
807 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
808 5071, 5103, 5104, 5112, 5113, 5184, 5186
810 * More checking functions: fread, fread_unlocked, open*, mq_open.
811 Implemented by Jakub Jelinek and Ulrich Drepper.
813 * Extend fortification to C++. Implemented by Jakub Jelinek.
815 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
816 by not recognizing 'a' as a modifier when those specs are requested.
817 Implemented by Jakub Jelinek.
819 * PPC optimizations to math and string functions.
820 Implemented by Steven Munroe.
822 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
823 options to be passed. Implemented by Ulrich Drepper.
825 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
827 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
828 Implemented by Ulrich Drepper.
830 * Handle private futexes in the NPTL implementation.
831 Implemented by Jakub Jelinek and Ulrich Drepper.
833 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
834 Implemented by Roland McGrath and Ulrich Drepper.
836 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
838 * SHA-256 and SHA-512 based password encryption.
839 Implemented by Ulrich Drepper.
841 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
842 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
843 yo_NG.
845 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
846 Implemented by Ulrich Drepper.
847 \f
848 Version 2.6
850 * The following bugs are resolved with this release:
852 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
853 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
854 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
855 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
856 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
857 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
858 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
859 4702, 4858
861 * New Linux interfaces: epoll_pwait, sched_getcpu.
863 * New generic interfaces: strerror_l.
865 * nscd can now cache the services database. Implemented by Ulrich Drepper.
866 \f
867 Version 2.5
869 * The following bugs are resolved with this release:
871 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
872 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
873 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
874 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
875 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
876 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
877 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
878 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
879 3225, 3251, 3252, 3253, 3273
881 * For Linux, the sorting of addresses returned by getaddrinfo now also
882 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
883 Implemented by Ulrich Drepper.
885 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
886 Implemented by Ulrich Drepper.
888 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
890 * New iconv module for MIK. Contributed by Alexander Shopov.
892 * For sites with broken group and/or passwd database, the auto-propagate
893 option of nscd can prevent creating ID lookup entries from the results
894 of a name lookup and vice versa. This usually is no problem but some
895 site might have problems with the default behavior.
896 Implemented by Ulrich Drepper.
898 * Iterating over entire database in NIS can be slow. With the
899 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
900 to trade time for memory. The entire database will be read at once.
901 Implemented by Ulrich Drepper.
903 * The interfaces introduced in RFC 3542 have been implemented by
904 Ulrich Drepper.
906 * Support for the new ELF hash table format was added by Ulrich Drepper.
908 * Support for priority inheritance mutexes added by Jakub Jelinek and
909 Ulrich Drepper.
911 * Support for priority protected mutexes added by Jakub Jelinek.
913 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
914 or_IN, csb_PL, fy_NL, sr_ME.
915 \f
916 Version 2.4
918 * More overflow detection functions.
920 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
921 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
923 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
924 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
925 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
926 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
927 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
928 by Masahide Washizawa.
930 * It is now possible to install audit libraries for the dynamic linker using
931 LD_AUDIT. Implemented by Ulrich Drepper.
933 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
934 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
935 For a libc and libpthread that works well on Linux 2.4 kernels, we
936 recommend using the stable 2.3 branch.
938 * The new function open_wmemstream acts like open_memstream,
939 but uses a wchar_t wide character buffer.
941 * The new function ppoll is an improved version of poll, similar to pselect.
943 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
944 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
945 renameat, unlinkat, linkat, symlinkat, readlinkat.
947 * New Linux kernel system calls: unshare,
948 inotify_init, inotify_add_watch, inotify_rm_watch.
950 * The euidaccess function is now also known by the alias eaccess,
951 for compatibility with some other systems.
953 * Timezone data updated to 2006b version.
954 \f
955 Version 2.3.6
957 * The following bugs are resolved with this release:
959 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
960 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
961 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
962 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
963 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
964 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
966 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
968 * As of this release, GCC 4 can be used to compile the C Library.
970 * Timezone data updated to 2005m version.
971 \f
972 Version 2.3.5
974 * The following bugs are resolved with this release:
976 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
977 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
978 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
979 777, 787, 821, 822, 823, 825
981 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
982 \f
983 Version 2.3.4
985 * Support for RFC 3678. Real implementations exist only for Linux so far.
986 Implemented by Ulrich Drepper.
988 * nscd can now cache entries persistently. Expiring entries are reloaded.
989 For speedups the cache can be shared in memory with client processes.
990 Implemented by Ulrich Drepper.
992 * nscd can now perform SELinux checks.
993 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
995 * getaddrinfo queries are now cached. Canonical name lookup is performed
996 efficiently.
997 Implemented by Ulrich Drepper.
999 * The nothrow function attribute is used when headers are used by gcc when
1000 compiling C code. This can avoid significant amounts of exception
1001 handling data.
1003 * The malloc functions perform more error checking and are stricter when
1004 it comes to reacting on errors. The default action is to terminate
1005 the process after showing an error message. Implemented by Ulrich Drepper.
1007 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1008 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1010 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1011 namespaces using the new function dlmopen(). This feature is of course,
1012 like most other dynamic loading functionality, not available in statically
1013 linked applications. Implemented by Ulrich Drepper.
1015 * Low-overhead boundary checking variants of string and some stdio functions
1016 were added. These are to be used in conjunction with a gcc patch by
1017 Jakub Jelinek which adds calls to these functions if possible.
1018 Implemented by Jakub Jelinek and Ulrich Drepper.
1020 * Old code for several operating systems and machine architectures that
1021 have not been in working condition in a long time have been removed from
1022 the main source tree maintained by the GNU C Library's maintainers.
1023 These files are now reside in the separate `ports' source module
1024 that is usable as an add-on when building the library.
1025 \f
1026 Version 2.3.3
1028 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1029 interrogate the dynamic linker, compatible with the Solaris interface.
1031 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1032 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1034 * getifaddrs now uses the netlink interface on Linux to get its information.
1035 Implemented by Thorsten Kukuk.
1037 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1038 Implemented by Ulrich Drepper.
1040 * support for non-executable stacks on x86 has been added. Changes mostly
1041 by Roland McGrath.
1043 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1044 and Ulrich Drepper.
1046 * getaddrinfo now performs destination address selection according to
1047 RFC 3484.
1048 \f
1049 Version 2.3.2
1051 * Thread-safe interfaces for many functions that access locale data
1052 were added in version 2.3, but these features were omitted from NEWS.
1053 Many functions have variants with an `_l' suffix that take a `locale_t'
1054 object as a parameter rather than consulting the current locale.
1055 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1056 create and maintain `locale_t' objects. Additionally, the new function
1057 `uselocale' sets "the current locale" (as used by functions not so
1058 parameterized) set for an individual thread. These features were added
1059 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1061 * The functions getresuid, getresgid, setresuid, and setresgid, which
1062 have long been available on Linux, are now declared in <unistd.h>
1063 and are now also available on the Hurd.
1065 * ELF thread-local storage support (TLS) now works on x86-64.
1067 * The new dynamic string token $LIB is expanded in shared library names.
1068 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1070 * Aldy Hernandez contributed complete software floating point support for
1071 PowerPC machines with no FPU.
1073 * fexecve is implemented on Linux.
1075 * The `btowc' function should work at least twice as fast due to
1076 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1078 * With approriate thread add-ons cancelable functions are now implemented
1079 in libc.so as well. No need to call the function in libpthread. This
1080 change allowed to finally disable the incorrect and expensive handling
1081 of weak definition in ld.so.
1083 * Yet more PLT entries in libc.so have been removed. We finally arrived
1084 at the bare minimum. Startup times improved appropriately.
1086 * Support for the new Linux/x86 system call interface was added. The
1087 AT_SYSINFO auxiliary vector entry is recognized and handled.
1088 \f
1089 Version 2.3
1091 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1092 charsets.
1094 * iconv (the program and the interface) now accepts empty names (excluding
1095 options like //TRANSLIT) to mean "use charset of current locale".
1097 * localedef can now transliterate characters in strings which are not in
1098 the provided charmap. The information from the input locale is used.
1100 * Prelinking support was added for ELF targets. This requires additional
1101 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1103 * Read-only stdio streams now use mmap to speed up operation by eliminating
1104 copying and buffer underflows. To use add 'm' to the mode string of
1105 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1107 * The malloc functions were completely rewritten by Wolfram Gloger based
1108 on Doug Lea's malloc-2.7.0.c.
1110 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1111 implementation of regex.
1113 * Bruno Haible upgraded the iconv and locale implementation to support
1114 Unicode 3.2.
1116 * Contents of the LC_* and LANG environment variables in the CEN style are
1117 not recognized anymore. It never was used. Change by Ulrich Drepper.
1119 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1120 thread-local storage (TLS) ABI on some platforms.
1121 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1123 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1124 EUC-JISX0213, and TSCII.
1126 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1127 BSD-compatible interface for getting all network interface addresses.
1128 Implementation for IPv4 by Roland McGrath.
1130 * Loading of locale data is faster due to the introduction of a locale
1131 archive. Implemented by Roland McGrath and Ulrich Drepper.
1133 * Startup times are significantly reduced by not using exported functions
1134 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1135 and Ulrich Drepper.
1137 * Steven Munroe contributed a port to PowerPC64/Linux.
1138 \f
1139 Version 2.2.6
1141 * The Hurd now uses the GNU libio implementation of stdio rather than the
1142 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1144 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1145 with the same behavior as the Linux system call of the same name.
1146 \f
1147 Version 2.2.5
1149 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1150 128-bit long double format.
1152 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1153 IBM1161, and IBM1162 charsets.
1155 * Andreas Jaeger contributed a port to x86-64/Linux.
1157 * Peter Bruin contributed a port to PowerPC/Hurd.
1159 * libc functions using I/O streams now can handle wide-oriented streams
1160 as well.
1162 * optimizations in the dynamic linker. Binaries created by recent binutils
1163 versions start up quicker due to reduced time spent on relocations.
1165 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1166 \f
1167 Version 2.2.4
1169 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1170 asinh, atanh, j0 for the 128-bit long double format.
1172 * Bruno Haible updated all the code handling Unicode in some form to
1173 support Unicode 3.1.
1175 * Speed of regex for single-byte locales is back to previous levels.
1176 Patch by Isamu Hasegawa.
1178 * Alpha, SPARC, and IA-64 now also using floating stacks.
1180 * Startup time of internationalized applications greatly improved through
1181 iconv cache. Use iconvconfig to generate the cache file.
1182 Contributed by Ulrich Drepper.
1184 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1185 severe performance problems. Patch by David Mosberger.
1187 * The Hurd port got a lot more functionality like AIO, various stdio
1188 extensions, etc. Mainly done by Roland McGrath.
1190 * mtrace can now lookup symbols in shared libraries.
1191 \f
1192 Version 2.2.3
1194 * Intel's IA-64 math library is largely integrated. It provides fast and
1195 accurate implementatations for most basic and standard math functions
1196 in float, double, and long double format.
1198 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1199 and asin for the 96-bit long double format and asin, log, tan for the
1200 128-bit long double format.
1202 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1203 The basic double functions exist today. Contributed by Abraham Ziv
1204 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1205 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1207 * An asynchronous name lookup library was added. The interface is designed
1208 after POSIX AIO. The proposal was circulated beforehand to get comments.
1209 No negative ones came in. Implemented by Ulrich Drepper.
1211 * Port to S390/64bit contributed by Martin Schwidefsky
1212 <schwidefsky@de.ibm.com>.
1214 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1215 of functions for Linux/IA-64.
1217 * The RPC code is now thread safe. Threads can now use the same service
1218 of different services at the same time. Patch by Eric Norum
1219 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1221 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1222 family of functions for Linux/S390.
1224 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1225 of functions for Linux/x86.
1227 * Port to Linux/CRIS contributed by Axis Communications.
1228 \f
1229 Version 2.2.2
1231 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1232 we can now check for namespace violations and missing declarations. The
1233 result is that almost all headers are now Unix-compliant (as defined in
1234 the upcoming XPG6). The negative side is that some programs might need
1235 corrections, too, if they depend on the incorrect form of the headers in
1236 previous versions which defined too many symbols and included too many
1237 other headers.
1239 * regex now handles multibyte character sets correctly.
1240 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1242 * iconv (the program) does now conform to the upcoming XPG6 and handles
1243 charmaps. Instead of the charset names the path of charmaps can be
1244 provided and the conversion happens based on this data.
1245 Contributed by Ulrich Drepper.
1247 * The locale program now provides detailed information about the installed
1248 locales. While
1250 locale -a
1252 only lists the names of the supported locales
1254 locale -a --verbose
1256 provides details such as country, language, and codeset name.
1257 Contributed by Ulrich Drepper.
1258 \f
1259 Version 2.2.1
1261 * The gencat program now parses the input file according to the charset
1262 selected by the LC_CTYPE category. This is important for stateful
1263 character sets. To make generating catalogs easier there is a way
1264 to overwrite the charset selected by the locale: before the first
1265 message or $ quote line the catalog can contain a line like
1267 $ codeset=ISO-8859-2
1269 to select the charset (ISO-8859-2 in this case).
1271 Implemented by Shinya Hanataka and Ulrich Drepper.
1273 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1274 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1275 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1277 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1278 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1280 * The LANGUAGE environment variable is now ignored unless the locale is
1281 changed from the default "C" locale.
1283 * The usual bug fixes.
1284 \f
1285 Version 2.2
1287 * Greg McGary added runtime support for bounds checking using gcc's
1288 new -fbounded-pointers option. ix86 target is complete. PowerPC
1289 is in progress.
1291 * Thorsten Kukuk added secure mode support to nscd.
1293 * The Berkeley db libraries have been removed.
1295 Related, the nss_db module is now in a separate package since it
1296 obviously requires a database library being available.
1298 * Wide character I/O streams implemented by Ulrich Drepper.
1300 * Functions from the extended socket API added by Ulrich Drepper.
1302 * Functions feenableexcept and fedisableexcept to control the
1303 behaviour of individual exceptions have been added by Andreas Jaeger.
1305 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1307 * The resolver code has been updated from bind 8.2.3-T5B which supports
1308 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1309 and Mark Kettenis.
1311 This change could in some situations effect backward compatibility. Since
1312 now `_res' is a thread-local instead of a global variable, modifying it
1313 in one thread does not have any effect in other threads.
1315 The resolver library was also extended to allow IPv6 as the transport
1316 protocol for the requests. This work was done by Stig Venaas.
1318 * Compatibility code for K&R C compilers has been removed from the
1319 header files. A ISO C compiler is needed to use the library
1320 (conforming to either C89 or C99 standard).
1322 * Complete rewrite of the localedef program to support multibyte character
1323 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1324 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1325 Implemented by Ulrich Drepper.
1327 Bruno Haible significantly improved the generation and use of the data
1328 structures for the wide character tables.
1330 * Plural handling in gettext implemented by Ulrich Drepper.
1332 * The utmp daemon has been removed.
1334 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1336 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1337 and Yutaka Niibe.
1339 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1341 * POSIX barriers implemented by Kaz Kylheku.
1343 * POSIX spawn function family implemented by Ulrich Drepper.
1345 * POSIX spinlocks are now available.
1347 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1349 * the configure option --enable-kernel=X.Y.Z allows to strip out
1350 compatibility for kernel versions before X.Y.Z. This is currently only
1351 implemented for Linux.
1353 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1354 field sin6_scope_id. This means that all programs using IPv6 should be
1355 recompiled. Don't expect binary compatibility with previous glibc
1356 versions.
1358 * various conversion modules for IBM character sets contributed by
1359 Masahide Washizawa.
1361 * IA-64 port by Jes Sorensen and HJ Lu.
1362 \f
1363 Version 2.1.3
1365 * bug fixes
1367 \f
1368 Version 2.1.2
1370 * bug fixes
1372 \f
1373 Version 2.1.1
1375 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1377 * New xdr functions are added; some rpc functions are now 64bit clean.
1379 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1381 * Fixed known incompatibilities with glibc 2.0.
1383 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1385 * Optimized a number of functions (especially the ELF dynamic loader).
1387 * Update timezone data files.
1389 * lots of charmaps corrections
1391 * some new locale definitions and charmaps
1393 \f
1394 Version 2.1
1396 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1397 conform to POSIX member type requirements. Symbol versions have been
1398 adjusted as needed within the library, and for direct use by applications,
1399 but there is potential for problems if third-party libraries use
1400 struct timeval as part of their interface. This does not present
1401 a problem for X and other "essential" system libraries.
1403 * An additional locale model to support C++ Standard Library locale
1404 model and probably more was implemented by Ulrich Drepper.
1406 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1407 symbol level.
1409 * Miles Bader provided the `argp' function family to support hierachical
1410 command line argument parsing, layered on top of getopt.
1412 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1414 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1415 numbers.
1417 * scanf recognizes the %a and %A format for scanning floating point numbers.
1419 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1420 information and interfaces for the available integer types.
1422 * about 130 new math functions were added to implement the ISO C9x math
1423 library.
1425 * the new header <complex.h> contains definitions of the complex math
1426 functions from ISO C 9X.
1428 * the new header <tgmath.h> defines generic macros to use complex or
1429 real valued functions.
1431 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1433 * Andreas Jaeger provided a test suite for the math library.
1435 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1437 * Ulrich Drepper added character set conversion functions (iconv).
1439 * Optimized string functions have been added.
1441 * The localedata addon is now part of glibc.
1443 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1445 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1446 daemon for NSS (nscd).
1448 Missing a better place here are some numbers on improvements. Under
1449 Linux 2.1.125 un-tar-ing the kernel sources takes
1451 user system wall
1453 using local files 12.19s 6.88s 22.91s
1455 using NIS 13.92s 8.91s 26.34s
1457 using NIS & nscd 10.37s 7.34s 25.30s
1459 using NIS+ 27.57s 30.37s 640.46s
1461 using NIS+ & nscd 10.25s 7.83s 26.51s
1463 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1465 Keep in mind that non-namelookup related operations dominate above times.
1466 It was just a common complain that using NIS+ unpacking the kernel is
1467 horribly slow.
1469 [1] The old nscd implementation is not available anymore since it was
1470 distributed with glibc up to version 2.0.98 and thus is now replaced.
1472 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1474 * Mark Kettenis provided a Hesiod NSS module.
1476 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1477 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1479 * rcmd can now handle netgroups (Dick Streefland).
1481 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1482 Bambrough.
1484 * Support for the IPv6 protocol has been added to the socket API, as per the
1485 latest draft standards.
1487 * Support for Linux 2.2 has been added.
1489 * Interface changes relative to the latest 2.0.x release:
1490 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1491 addseverity NEW: Unix98
1492 alphasort64 NEW: LFS
1493 argp_err_exit_status NEW: argp, GNU ext
1494 argp_error NEW: argp, GNU ext
1495 argp_failure NEW: argp, GNU ext
1496 argp_help NEW: argp, GNU ext
1497 argp_parse NEW: argp, GNU ext
1498 argp_program_bug_address NEW: argp, GNU ext
1499 argp_program_version NEW: argp, GNU ext
1500 argp_program_version_hook NEW: argp, GNU ext
1501 argp_state_help NEW: argp, GNU ext
1502 argp_usage NEW: argp, GNU ext
1503 authdes_create NEW: Secure RPC
1504 authdes_getucred NEW: Secure RPC
1505 authdes_pk_create NEW: Secure RPC
1506 backtrace NEW: GNU ext.
1507 backtrace_symbols NEW: GNU ext.
1508 backtrace_symbols_fd NEW: GNU ext.
1509 cacos NEW: ISO C 9x
1510 cacosf NEW: ISO C 9x
1511 cacosh NEW: ISO C 9x
1512 cacoshf NEW: ISO C 9x
1513 cacoshl NEW: ISO C 9x
1514 cacosl NEW: ISO C 9x
1515 capget NEW: kernel
1516 capset NEW: kernel
1517 carg NEW: ISO C 9x
1518 cargf NEW: ISO C 9x
1519 cargl NEW: ISO C 9x
1520 casin NEW: ISO C 9x
1521 casinf NEW: ISO C 9x
1522 casinh NEW: ISO C 9x
1523 casinhf NEW: ISO C 9x
1524 casinhl NEW: ISO C 9x
1525 casinl NEW: ISO C 9x
1526 catan NEW: ISO C 9x
1527 catanf NEW: ISO C 9x
1528 catanh NEW: ISO C 9x
1529 catanhf NEW: ISO C 9x
1530 catanhl NEW: ISO C 9x
1531 catanl NEW: ISO C 9x
1532 cbc_crypt NEW: Secure RPC
1533 ccos NEW: ISO C 9x
1534 ccosf NEW: ISO C 9x
1535 ccosh NEW: ISO C 9x
1536 ccoshf NEW: ISO C 9x
1537 ccoshl NEW: ISO C 9x
1538 ccosl NEW: ISO C 9x
1539 cexp NEW: ISO C 9x
1540 cexpf NEW: ISO C 9x
1541 cexpl NEW: ISO C 9x
1542 cimag NEW: ISO C 9x
1543 cimagf NEW: ISO C 9x
1544 cimagl NEW: ISO C 9x
1545 clearerr_locked REMOVED
1546 clntunix_create NEW: sunrpc ext
1547 clog NEW: ISO C 9x
1548 clog10 NEW: ISO C 9x
1549 clog10f NEW: ISO C 9x
1550 clog10l NEW: ISO C 9x
1551 clogf NEW: ISO C 9x
1552 clogl NEW: ISO C 9x
1553 conj NEW: ISO C 9x
1554 conjf NEW: ISO C 9x
1555 conjl NEW: ISO C 9x
1556 cpow NEW: ISO C 9x
1557 cpowf NEW: ISO C 9x
1558 cpowl NEW: ISO C 9x
1559 cproj NEW: ISO C 9x
1560 cprojf NEW: ISO C 9x
1561 cprojl NEW: ISO C 9x
1562 creal NEW: ISO C 9x
1563 crealf NEW: ISO C 9x
1564 creall NEW: ISO C 9x
1565 creat64 NEW: LFS
1566 csin NEW: ISO C 9x
1567 csinf NEW: ISO C 9x
1568 csinh NEW: ISO C 9x
1569 csinhf NEW: ISO C 9x
1570 csinhl NEW: ISO C 9x
1571 csinl NEW: ISO C 9x
1572 csqrt NEW: ISO C 9x
1573 csqrtf NEW: ISO C 9x
1574 csqrtl NEW: ISO C 9x
1575 ctan NEW: ISO C 9x
1576 ctanf NEW: ISO C 9x
1577 ctanh NEW: ISO C 9x
1578 ctanhf NEW: ISO C 9x
1579 ctanhl NEW: ISO C 9x
1580 ctanl NEW: ISO C 9x
1581 des_setparity NEW: Secure RPC
1582 ecb_crypt NEW: Secure RPC
1583 endutxent NEW: Unix98
1584 exp10 NEW: ISO C 9x
1585 exp10f NEW: ISO C 9x
1586 exp10l NEW: ISO C 9x
1587 exp2 NEW: ISO C 9x
1588 exp2f NEW: ISO C 9x
1589 exp2l NEW: ISO C 9x
1590 fattach NEW: STREAMS
1591 fdetach NEW: STREAMS
1592 fdim NEW: ISO C 9x
1593 fdimf NEW: ISO C 9x
1594 fdiml NEW: ISO C 9x
1595 feclearexcept NEW: ISO C 9x
1596 fegetenv NEW: ISO C 9x
1597 fegetexceptflag NEW: ISO C 9x
1598 fegetround NEW: ISO C 9x
1599 feholdexcept NEW: ISO C 9x
1600 feof_locked REMOVED
1601 feraiseexcept NEW: ISO C 9x
1602 ferror_locked REMOVED
1603 fesetenv NEW: ISO C 9x
1604 fesetexceptflag NEW: ISO C 9x
1605 fesetround NEW: ISO C 9x
1606 fetestexcept NEW: ISO C 9x
1607 feupdateenv NEW: ISO C 9x
1608 fflush_locked REMOVED
1609 ffsl NEW: GNU ext.
1610 ffsll NEW: GNU ext.
1611 fgetpos64 NEW: LFS
1612 fgets_unlocked NEW: GNU ext.
1613 fileno_locked REMOVED
1614 fma NEW: ISO C 9x
1615 fmaf NEW: ISO C 9x
1616 fmal NEW: ISO C 9x
1617 fmax NEW: ISO C 9x
1618 fmaxf NEW: ISO C 9x
1619 fmaxl NEW: ISO C 9x
1620 fmin NEW: ISO C 9x
1621 fminf NEW: ISO C 9x
1622 fminl NEW: ISO C 9x
1623 fmtmsg NEW: Unix98
1624 fopen64 NEW: LFS
1625 fputc_locked REMOVED
1626 fputs_unlocked NEW: GNU ext.
1627 fread_unlocked NEW: GNU ext.
1628 freopen64 NEW: LFS
1629 fseeko NEW: Unix98
1630 fsetpos64 NEW: LFS
1631 fstatfs64 NEW: LFS
1632 fstatvfs NEW: Unix98
1633 fstatvfs64 NEW: LFS
1634 ftello NEW: Unix98
1635 ftello64 NEW: LFS
1636 ftruncate64 NEW: LFS
1637 ftw64 NEW: LFS
1638 fwrite_unlocked NEW: GNU ext.
1639 gai_strerror NEW: IPv6
1640 gamma_r REMOVED
1641 gammaf_r REMOVED
1642 gammal_r REMOVED
1643 getchar_locked REMOVED
1644 getdate NEW: Unix98
1645 getdate_err NEW: Unix98
1646 getdate_r NEW: GNU ext.
1647 getmsg NEW: STREAMS
1648 getnameinfo NEW: IPv6
1649 getnetname NEW: Secure RPC
1650 getpmsg NEW: STREAMS
1651 getpt NEW: Unix98 PTY
1652 getrlimit64 NEW: LFS
1653 getutxent NEW: Unix98
1654 getutxid NEW: Unix98
1655 getutxline NEW: Unix98
1656 glob64 NEW: GNU ext.
1657 globfree64 NEW: GNU ext.
1658 gnu_get_libc_release NEW: GNU ext.
1659 gnu_get_libc_version NEW: GNU ext.
1660 grantpt NEW: Unix98 PTY
1661 host2netname NEW: Secure RPC
1662 iconv NEW: iconv
1663 iconv_close NEW: iconv
1664 iconv_open NEW: iconv
1665 if_freenameindex NEW: IPv6
1666 if_indextoname NEW: IPv6
1667 if_nameindex NEW: IPv6
1668 if_nametoindex NEW: IPv6
1669 in6addr_any NEW: IPv6
1670 in6addr_loopback NEW: IPv6
1671 inet6_isipv4mapped NEW: IPv6
1672 isastream NEW: STREAMS
1673 iswblank NEW: GNU ext.
1674 key_decryptsession NEW: Secure RPC
1675 key_decryptsession_pk NEW: Secure RPC
1676 key_encryptsession NEW: Secure RPC
1677 key_encryptsession_pk NEW: Secure RPC
1678 key_gendes NEW: Secure RPC
1679 key_get_conv NEW: Secure RPC
1680 key_secretkey_is_set NEW: Secure RPC
1681 key_setnet NEW: Secure RPC
1682 key_setsecret NEW: Secure RPC
1683 llrint NEW: ISO C 9x
1684 llrintf NEW: ISO C 9x
1685 llrintl NEW: ISO C 9x
1686 llround NEW: ISO C 9x
1687 llroundf NEW: ISO C 9x
1688 llroundl NEW: ISO C 9x
1689 log2 NEW: ISO C 9x
1690 log2f NEW: ISO C 9x
1691 log2l NEW: ISO C 9x
1692 lrint NEW: ISO C 9x
1693 lrintf NEW: ISO C 9x
1694 lrintl NEW: ISO C 9x
1695 lround NEW: ISO C 9x
1696 lroundf NEW: ISO C 9x
1697 lroundl NEW: ISO C 9x
1698 lseek64 NEW: LFS
1699 makecontext NEW: Unix98
1700 mempcpy NEW: GNU ext.
1701 mmap64 NEW: LFS
1702 moncontrol REMOVED
1703 modify_ldt NEW: kernel
1704 nan NEW: ISO C 9x
1705 nanf NEW: ISO C 9x
1706 nanl NEW: ISO C 9x
1707 nearbyint NEW: ISO C 9x
1708 nearbyintf NEW: ISO C 9x
1709 nearbyintl NEW: ISO C 9x
1710 netname2host NEW: Secure RPC
1711 netname2user NEW: Secure RPC
1712 nexttoward NEW: ISO C 9x
1713 nexttowardf NEW: ISO C 9x
1714 nexttowardl NEW: ISO C 9x
1715 nftw NEW: Unix98
1716 nftw64 NEW: LFS
1717 open64 NEW: LFS
1718 passwd2des NEW: Secure RPC
1719 pow10 NEW: GNU ext.
1720 pow10f NEW: GNU ext.
1721 pow10l NEW: GNU ext.
1722 pread NEW: Unix98
1723 pread64 NEW: LFS
1724 printf_size NEW: GNU ext.
1725 printf_size_info NEW: GNU ext.
1726 profil_counter REMOVED
1727 pthread_mutexattr_getkind_np REPLACED
1728 pthread_mutexattr_setkind_np REPLACED
1729 ptsname NEW: Unix98 PTY
1730 ptsname_r NEW: Unix98 PTY
1731 putc_locked REMOVED
1732 putchar_locked REMOVED
1733 putgrent NEW: GNU ext.
1734 putmsg NEW: STREAMS
1735 putpmsg NEW: STREAMS
1736 pututxline NEW: Unix98
1737 pwrite NEW: Unix98
1738 pwrite64 NEW: LFS
1739 readdir64 NEW: LFS
1740 readdir64_r NEW: LFS
1741 remquo NEW: ISO C 9x
1742 remquof NEW: ISO C 9x
1743 remquol NEW: ISO C 9x
1744 round NEW: ISO C 9x
1745 roundf NEW: ISO C 9x
1746 roundl NEW: ISO C 9x
1747 rtime NEW: GNU ext.
1748 scalbln NEW: ISO C 9x
1749 scalblnf NEW: ISO C 9x
1750 scalblnl NEW: ISO C 9x
1751 scandir64 NEW: LFS
1752 sendfile NEW: kernel
1753 setcontext NEW: Unix98
1754 setrlimit64 NEW: LFS
1755 setutxent NEW: Unix98
1756 sighold NEW: Unix98
1757 sigignore NEW: Unix98
1758 sigqueue NEW: POSIX.1b
1759 sigrelse NEW: Unix98
1760 sigset NEW: POSIX.1b
1761 sigtimedwait NEW: POSIX.1b
1762 sigwaitinfo NEW: POSIX.1b
1763 sincos NEW: GNU ext.
1764 sincosf NEW: GNU ext.
1765 sincosl NEW: GNU ext.
1766 statfs64 NEW: LFS
1767 statvfs NEW: Unix98
1768 statvfs64 NEW: LFS
1769 strcasestr NEW: GNU ext.
1770 strtoimax NEW: ISO C 9x
1771 strtoumax NEW: ISO C 9x
1772 strverscmp NEW: GNU ext.
1773 svcauthdes_stats NEW: Secure RPC
1774 svcunix_create NEW: sunrpc etx
1775 svcunixfd_create NEW: sunrpc ext
1776 swapcontext NEW: Unix98
1777 tcgetsid NEW: Unix98 PTY
1778 tdestroy NEW: GNU ext.
1779 tgamma NEW: ISO C 9x
1780 tgammaf NEW: ISO C 9x
1781 tgammal NEW: ISO C 9x
1782 tmpfile64 NEW: LFS
1783 trunc NEW: ISO C 9x
1784 truncate64 NEW: LFS
1785 truncf NEW: ISO C 9x
1786 truncl NEW: ISO C 9x
1787 umount2 NEW: kernel
1788 unlockpt NEW: Unix98 PTY
1789 updwtmpx NEW: Unix98
1790 user2netname NEW: Secure RPC
1791 utmpxname NEW: Unix98
1792 versionsort NEW: GNU ext.
1793 versionsort64 NEW: GNU ext.
1794 waitid NEW: Unix98
1795 wcscasecmp NEW: GNU ext.
1796 wcsncasecmp NEW: GNU ext.
1797 wcsnlen NEW: GNU ext.
1798 wcstoimax NEW: ISO C 9x
1799 wcstoll NEW: ISO C 9x
1800 wcstoull NEW: ISO C 9x
1801 wcstoumax NEW: ISO C 9x
1802 wcswcs NEW: Unix98
1803 wordexp NEW: POSIX.2
1804 wordfree NEW: POSIX.2
1805 write_profiling REMOVED
1806 xdecrypt NEW: Secure RPC
1807 xdr_authdes_cred NEW: Secure RPC
1808 xdr_authdes_verf NEW: Secure RPC
1809 xdr_cryptkeyarg NEW: Secure RPC
1810 xdr_cryptkeyarg2 NEW: Secure RPC
1811 xdr_cryptkeyres NEW: Secure RPC
1812 xdr_getcredres NEW: Secure RPC
1813 xdr_key_netstarg NEW: Secure RPC
1814 xdr_key_netstres NEW: Secure RPC
1815 xdr_keybuf NEW: Secure RPC
1816 xdr_keystatus NEW: Secure RPC
1817 xdr_netnamestr NEW: Secure RPC
1818 xdr_sizeof NEW: Secure RPC
1819 xdr_unixcred NEW: sunrpc ext
1820 xencrypt NEW: Secure RPC
1821 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1822 \f
1823 Version 2.0.6
1825 * more bug fixes
1827 \f
1828 Version 2.0.5
1830 * more bug fixes
1832 * inet_ntoa is thread-safe
1834 * updwtmp is moved from libutil to libc
1836 * rewrite of cbrt function
1838 * update of timezone data
1839 \f
1840 Version 2.0.4
1842 * more bug fixes
1843 \f
1844 Version 2.0.3
1846 * more bug fixes
1847 \f
1848 Version 2.0.2
1850 * more bug fixes
1852 * add atoll function
1854 * fix complex problems in Berkeley DB code
1856 * fix math functions
1857 \f
1858 Version 2.0.1
1860 * fixed lots of header problems (especially Linux/GNU specific)
1862 * dynamic loader preserves all registers
1864 * Roland McGrath provided support for handling of auxiliary objects in
1865 the ELF dynamic loader.
1867 * support for parallel builds is improved
1868 \f
1869 Version 2.0
1871 * GNU extensions are no longer declared by default. To enable them you
1872 must define the macro `_GNU_SOURCE' in your program or compile with
1873 `-D_GNU_SOURCE'.
1875 * The library has changed from using GNU ld symbol aliases to using weak
1876 symbols where available. The ELF object file format supports weak
1877 symbols; GNU ld also supports weak symbols in the a.out format. (There
1878 is also now support for other GNU ld extensions in ELF. Use the
1879 `--with-elf' option to configure to indicate you have ELF, and
1880 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1881 of many files which contained only symbol aliases, reducing the size of
1882 the source and the compiled library; many other files were renamed to
1883 less cryptic names previously occupied by the symbol alias files.
1884 There is a new header file <elf.h> for programs which operate on
1885 files in the ELF format.
1887 * Converted to Autoconf version 2, so `configure' has more options.
1888 Run `configure --help' to see the details.
1890 * The library can now be configured to build profiling, highly-optimized
1891 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1892 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1893 `configure' enable building these extra libraries. The shared library is
1894 built by default when using both ELF and GNU ld. When shared libraries
1895 are enabled, the new library `-ldl' is available for arbitrary run-time
1896 loading of shared objects; its interface is defined in <dlfcn.h>. The
1897 new header file <link.h> gives access to the internals of the run-time
1898 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1899 application of same name on other systems and it provides information
1900 about dynamically linked binaries.
1902 * The C library now provides the run-time support code for profiling
1903 executables compiled with `-pg'. Programs can control the profiling code
1904 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1905 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1906 the support for this file format was contributed by David Mosberger-Tang.
1908 * The math code has been replaced with a math library based on fdlibm from
1909 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1910 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1911 functions. The math functions now reside in a separate library, so
1912 programs using them will need to use `-lm' their linking commands.
1914 * John C. Bowman contributed optimized ix87 assembler inline functions.
1916 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1917 mechanism similar to that found in Solaris 2. This is now used for the
1918 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1919 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1920 file controls what services are used for each individual database. This
1921 works by loading shared libraries with names specified in `nsswitch.conf',
1922 so service modules can be changed or added at any time without even
1923 relinking any program. Currently there are the file, db, and NIS based
1924 NSS services available.
1926 * The new functions `strtoq' and `strtouq' parse integer values from
1927 strings, like `strtol' and `strtoul', but they return `long long int' and
1928 `unsigned long long int' values, respectively (64-bit quantities).
1930 * The new functions `strtof' and `strtold' parse floating-point values from
1931 strings, like `strtod', but they return `float' and `long double' values,
1932 respectively (on some machines `double' and `long double' are the same).
1934 * Ulrich Drepper has contributed new implementations of the floating-point
1935 printing and reading code used in the `printf' family of functions and
1936 `strtod', `strtof', and `strtold'. These new functions are perfectly
1937 accurate, and much faster than the old ones.
1939 * The implementation of the POSIX locale model was completely rewritten by
1940 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1941 to compile the POSIX locale definition.
1943 * The former dummy implementations of the strcoll and strxfrm function are
1944 now replaced by fully functional code contributed by Ulrich Drepper. The
1945 collation information comes from the POSIX locale definitions.
1947 * The new header <langinfo.h> defines an interface for accessing
1948 various locale-dependent data (using the locale chosen with `setlocale').
1950 * Ulrich Drepper has contributed a new suite of functions for operation on
1951 wide-character and multibyte-character strings, in <wchar.h>;
1952 and classification and case conversion of wide characters, in <wctype.h>.
1953 These new functions are conforming to the ISO C, Amendement 1 specification.
1955 * There is now a second implementation of the standard I/O library available.
1956 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1957 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1959 * You can now use positional parameter specifications in format strings
1960 for the `printf' and `scanf' families of functions. For example,
1961 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1962 ``Number 6, Mr Jones''. This is mainly useful when providing different
1963 format strings for different languages, whose grammars may dictate
1964 different orderings of the values being printed. To support this
1965 feature, the interface for `register_printf_handler' has changed; see
1966 the header file <printf.h> for details.
1968 * The `printf' and `scanf' families of functions now understand a new
1969 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1970 to group numbers as indicated by the locale; for `scanf' and friends, this
1971 says to accept as valid only a number with all the proper grouping
1972 separators in the right places. In the default "C" locale, numbers are
1973 not grouped; but locales for specific countries will define the usual
1974 conventions (i.e. separate thousands with `,' in the US locale).
1976 * The pgrp functions have been regularized, slightly incompatibly but much
1977 less confusingly. The core functions are now `getpgid' and `setpgid',
1978 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1979 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1980 provided for compatibility. There is no longer an incompatible `getpgrp'
1981 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1983 * The new header file <fts.h> and suite of functions simplify programs that
1984 operate on directory trees. This code comes from 4.4 BSD.
1986 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1987 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1988 NSS scheme used in glibc.
1990 * There is a new malloc debugging hook `__memalign_hook'.
1992 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1993 `unsigned int' in <sys/types.h>. These are for compatibility only and
1994 their use is discouraged.
1996 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1997 done differently, so that it works even without GNU ld.
1999 * New function `euidaccess' checks allowed access to a file like `access',
2000 but using the effective IDs instead of the real IDs.
2002 * The time zone data files have been updated for the latest and greatest
2003 local time conventions of the countries of the world.
2005 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2006 see <dirent.h>.
2008 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2009 for formatting floating-point numbers. They are provided only for
2010 compatibility; new programs should use `sprintf' instead. There are
2011 also equivalent function for the `long double' floating-point type and
2012 all functions also exist in a reentrant form.
2014 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2015 functions for maintaining the login-record files (primarily of use to
2016 system programs such as `login'), and convenient functions for
2017 allocating and initializing a pseudo-terminal (pty) device.
2019 * Ulrich Drepper has contributed new support for System V style
2020 shared memory and IPC on systems that support it.
2022 * Ulrich Drepper has contributed several miscellaneous new functions found
2023 in System V: The `hsearch' family of functions provide an effective
2024 implementation of hash tables; `a64l' and `l64a' provide a very simple
2025 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2026 number generator.
2028 * Ulrich Drepper has contributed new reentrant counterparts for the
2029 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2031 * Ulrich Drepper has contributed new, highly-optimized versions of several
2032 string functions for the i486/Pentium family of processors.
2034 * Ulrich Drepper has updated the Linux-specific code, based largely
2035 on work done in Hongjiu Lu's version of GNU libc for Linux.
2036 The GNU library now supports Linux versions 2.0.10 and later,
2037 using the ELF object file format (i[3456]86-*-linux).
2039 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2041 * David Mosberger-Tang and Richard Henderson have ported the C library
2042 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2043 dynamic linking support for ELF/Alpha.
2045 * Richard Henderson contributed several Alpha optimized assembler function
2046 for arithmetic and string handling.
2048 * Ulrich Drepper has contributed a new set of message catalog functions to
2049 support multiple languages using the <libintl.h> interface, for use with
2050 his new package GNU gettext. Translation volunteers have contributed
2051 catalogs of the library's messages in Spanish, German, and Korean.
2053 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2054 program and the `catgets' function for reading the catalog files it
2055 creates. (The <libintl.h> interface is preferred; we include the
2056 <nl_types.h> interface using `catgets' only for source compatibility with
2057 programs already written to use it.)
2059 * New header file <values.h> gives SVID-compatible names for <limits.h>
2060 constants.
2062 * Various new macros, declarations, and small header files for compatibility
2063 with 4.4 BSD.
2065 * New function `group_member' is a convenient way to check if a process has
2066 a given effective group ID.
2068 * When using GCC 2.7 and later, the socket functions are now declared in a
2069 special way so that passing an argument of type `struct sockaddr_in *',
2070 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2071 `struct sockaddr *' type, does not generate a type-clash warning.
2073 * New function `error' declared in header file <error.h> is a convenient
2074 function for printing error messages and optionally exiting; this is the
2075 canonical function used in GNU programs. The new functions `err', `warn',
2076 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2077 doing the same thing.
2079 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2080 POSIX.2 `glob' function to do ~ and {...} expansion.
2082 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2083 `clearenv' which is used in POSIX.9 is also available.
2085 * New function `getsid' returns session ID number on systems that support it.
2087 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2088 files <db.h> and <mpool.h> provide a rich set of functions for several
2089 types of simple databases stored in memory and in files, and <ndbm.h> is
2090 an old `ndbm'-compatible interface using the `db' functions. Link with
2091 `-ldb' to get these functions.
2093 * New macro `strdupa' copies a string like `strdup', but uses local stack
2094 space from `alloca' instead of dynamic heap space from `malloc'.
2096 * New function `strnlen' is like `strlen' but searches only a given maximum
2097 number of characters for the null terminator. `stpncpy', `strndup' and
2098 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2099 function.
2101 * New function `statfs' in header <sys/statfs.h>.
2103 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2104 provide convenient functions for operating on blocks of null-terminated
2105 strings.
2107 * A new suite of functions in <utmp.h> handle all the details of reading
2108 and writing the utmp file.
2110 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2111 Thorsten Kukuk.
2113 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2114 completely POSIX compliant and also implemented the extended functionality
2115 to handle alternate digit representation and alternate era date formats.
2117 * Ulrich Drepper provided an implementation of the `strptime' function
2118 defined in XPG4.2 which transforms a string into a `struct tm' value.
2120 * Paul Eggert provided the tzselect shell script as part of the timezone
2121 code. The shell script makes it easy to select the correct timezone
2122 specification.
2124 * The implementation of the malloc family of functions is completely replaced
2125 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2126 The implementation uses the mmap function (if available) and it is
2127 optimized for the use in multi threaded programs.
2129 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2130 functions. This new functionality is usable by specifying a special
2131 salt string and it is compatible with implementation on *BSD systems.
2133 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2134 `getsubopt' to handle second level command line options, `bsd_signal'
2135 to access BSD style `signal' functionality, the obsolete `regexp' style
2136 expression matcher.
2138 * the `lchown' function is available on system which support this
2139 functionality.
2141 * The implementation of the shadow password handling function was contributed
2142 by Ulrich Drepper.
2144 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2146 * POSIX.1g support was added. The <sys/select.h> header is available,
2147 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2148 implementation of `getaddrinfo'.
2149 \f
2150 Version 1.09
2152 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2154 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2155 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2157 * The new function `daemon' from 4.4 BSD is useful for server programs that
2158 want to put themselves in the background.
2160 * Joel Sherrill has contributed support for several standalone boards that
2161 run without an operating system.
2163 * `printf', `scanf' and friends now accept a `q' type modifier for long
2164 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2166 * All of the code taken from BSD (notably most of the math and networking
2167 routines) has been updated from the BSD 4.4-Lite release.
2169 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2171 * The new functions `getdomainname' and `setdomainname' fetch or change the
2172 YP/NIS domain name. These are system calls which exist on systems which
2173 have YP (aka NIS).
2175 * The time zone data files have been updated for the latest international
2176 conventions.
2178 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2179 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2180 \f
2181 Version 1.08
2183 * The C library now includes support for Sun RPC, from Sun's free
2184 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2185 are included. (There is still no support for YP.)
2187 * Tom Quinn has contributed a port of the C library to SGI machines running
2188 Irix 4 (mips-sgi-irix4).
2190 * The new `lockf' function is a simplified interface to the locking
2191 facilities of `fcntl', included for compatibility.
2193 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2195 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2197 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2198 compatibility.
2200 * The error message printed by `assert' for a failed assertion now includes
2201 the name of the program (if using GNU ld) and the name of the calling
2202 function (with versions of GCC that support this).
2204 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2206 * The library now includes the <sys/mman.h> header file and memory
2207 management functions `mmap', `munmap', `mprotect', `msync', and
2208 `madvise', on systems that support those facilities.
2210 * The interface for `mcheck' has changed slightly: the function called to
2211 abort the program when an allocation inconsistency is detected now takes
2212 an argument that indicates the type of failure. The new function
2213 `mprobe' lets you request a consistency check for a particular block at
2214 any time (checks are normally done only when you call `free' or `realloc'
2215 on a block).
2217 * It is now possible to easily cross-compile the C library, building on one
2218 system a library to run on another machine and/or operating system. All
2219 you need to do is set the variable `HOST_CC' in `configparms' to the
2220 native compiler for programs to run on the machine you are building on (a
2221 few generator programs are used on Unix systems); set `CC' to the
2222 cross-compiler.
2224 * The new function `fexecve' (only implemented on the GNU system) executes
2225 a program file given a file descriptor already open on the file.
2226 \f
2227 Version 1.07
2229 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2230 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2232 * You can set the variable `libprefix' in `configparms' to specify a prefix
2233 to be prepended to installed library files; this makes it easy to install
2234 the GNU C library to be linked as `-lgnuc' or whatever.
2236 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2237 copies a limited number of characters from a string, and returns the
2238 address of the last character written.
2240 * You no longer need to check for whether the installed `stddef.h' is
2241 compatible with the GNU C library. configure now checks for you.
2243 * You can now define a per-stream `fileno' function to convert the
2244 stream's cookie into an integral file descriptor.
2246 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2247 allocates zero bytes of storage, and returns a unique pointer which
2248 you can pass to `realloc' or `free'. The behavior is undefined if
2249 you dereference this pointer.
2251 * The C library now runs on Sony NEWS m68k machines running either
2252 NewsOS 3 or NewsOS 4.
2254 * The new `syscall' function is a system-dependent primitive function
2255 for invoking system calls. It has the canonical behavior on Unix
2256 systems, including unreliable return values for some calls (such as
2257 `pipe', `fork' and `getppid').
2259 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2260 to `EAGAIN', which is the preferred name. On systems whose kernels
2261 use two distinct codes, the C library now translates EWOULDBLOCK to
2262 EAGAIN in every system call function.
2263 \f
2264 Version 1.06
2266 * The GNU C Library Reference Manual is now distributed with the library.
2267 `make dvi' will produce a DVI file of the printed manual.
2268 `make info' will produce Info files that you can read on line using C-h i
2269 in Emacs or the `info' program.
2270 Please send comments on the manual to bug-glibc-manual@gnu.org.
2272 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2274 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2276 * Jason Merrill has contributed a port to the Sequent Symmetry running
2277 Dynix version 3 (i386-sequent-dynix).
2279 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2280 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2282 * New function `memory_warnings' lets you arrange to get warnings when
2283 malloc is running out of memory to allocate, like Emacs gives you.
2285 * The C library now contains the relocating allocator used in Emacs 19 for
2286 its editing buffers. This allocator (ralloc) minimizes allocation
2287 overhead and fragmentation by moving allocated regions around whenever it
2288 needs to. You always refer to a ralloc'd region with a "handle" (a
2289 pointer to a pointer--an object of type `void **').
2291 * There is a new `printf' format: `%m' gives you the string corresponding
2292 to the error code in `errno'.
2294 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2295 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2296 pass, the `a' modifier says to fill in a `char **' you pass with a
2297 malloc'd string.
2299 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2300 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2301 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2303 * `mkstemp' is a traditional Unix function to atomically create and open a
2304 uniquely-named temporary file.
2305 \f
2306 Version 1.05
2308 * The standard location for the file that says what the local timezone is
2309 has changed again. It is now `/usr/local/etc/localtime' (or more
2310 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2312 * The distribution no longer contains any files with names longer than 14
2313 characters.
2315 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2316 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2318 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2319 \f
2320 Version 1.04
2322 * The configuration process has changed quite a bit. The `configure'
2323 script is now used just like the configuration scripts for other GNU
2324 packages. The `sysdeps' directory hierarchy is much rearranged.
2325 The file `INSTALL' explains the new scheme in detail.
2327 * The header files no longer need to be processed into ANSI C and
2328 traditional C versions. There is just one set of files to install, and
2329 it will work with ANSI or old C compilers (including `gcc -traditional').
2331 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2332 MIPS DECStation running Ultrix 4.
2334 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2335 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2336 made itself into a shared library.
2338 * Yet further improved support for the i386, running 4.3 BSD-like systems
2339 (such as Mach 3 with the Unix single-server), or System V.
2341 * New function `strncasecmp' to do case-insensitive string comparison
2342 with limited length.
2344 * New function `strsep' is a reentrant alternative to `strtok'.
2346 * New functions `scandir' and `alphasort' for searching directories.
2348 * New function `setenv' is a better interface to `putenv'.
2350 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2351 function for traversing a directory tree.
2353 * The GNU obstack package is now also part of the C library.
2354 The new function `open_obstack_stream' creates a stdio stream that
2355 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2356 formatted output directly to an obstack.
2358 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2359 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2361 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2363 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2364 things to your strings.
2366 * There are some new test programs: test-fseek, testmb, and testrand.
2368 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2369 These ports are not finished, but are a good starting place for really
2370 supporting those systems.
2372 * `/etc/localtime' is now the standard location for the file that says what
2373 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2374 This follows the general principle that `/etc' is the place for all local
2375 configuration files.
2377 * The C library header files now use `extern "C"' when used by the C++
2378 compiler, so the C library should now work with C++ code.
2380 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2381 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2382 in <strings.h>.)
2384 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2385 function which uses the `merge sort' algorithm, and is said to be
2386 significantly faster than the old GNU `qsort' function. Merge sort is
2387 now the standard `qsort' function. The new algorithm can require a lot
2388 of temporary storage; so, the old sorting function is called when the
2389 required storage is not available.
2391 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2392 provides the Unix `crypt' function, plus some other entry points.
2394 * The code and header files taken from 4.4 BSD have been updated with the
2395 latest files released from Berkeley.
2396 \f
2397 ----------------------------------------------------------------------
2398 Copyright information:
2400 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2402 Permission is granted to anyone to make or distribute verbatim copies
2403 of this document as received, in any medium, provided that the
2404 copyright notice and this permission notice are preserved,
2405 thus giving the recipient permission to redistribute in turn.
2407 Permission is granted to distribute modified versions
2408 of this document, or of portions of it,
2409 under the above conditions, provided also that they
2410 carry prominent notices stating who last changed them.
2411 \f
2412 Local variables:
2413 version-control: never
2414 fill-column: 76
2415 End: