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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 15347, 15804, 15894, 16447, 16545, 16574, 16600, 16609, 16610, 16611.
14 * The am33 port, which had not worked for several years, has been removed
15 from ports.
17 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
18 supported; they now act the same as _DEFAULT_SOURCE (but generate a
19 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
20 conflicted with POSIX (support for which was removed in 2.19), the
21 interfaces those macros enabled remain available when compiling with
22 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
23 test macros defined.
24 \f
25 Version 2.19
27 * The following bugs are resolved with this release:
29 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
30 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
31 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
32 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
33 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
34 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
35 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
36 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
37 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
38 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
39 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
40 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
41 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
42 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
43 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
44 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16384, 16385, 16386,
45 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430, 16431,
46 16453, 16474, 16506, 16510, 16529
48 * Slovenian translations for glibc messages have been contributed by the
49 Translation Project's Slovenian team of translators.
51 * The public headers no longer use __unused nor __block. This change is to
52 support compiling programs that are derived from BSD sources and use
53 __unused internally, and to support compiling with Clang's -fblock
54 extension which uses __block.
56 * CVE-2012-4412 The strcoll implementation caches indices and rules for
57 large collation sequences to optimize multiple passes. This cache
58 computation may overflow for large collation sequences and may cause a
59 stack or buffer overflow. This is now fixed to use a slower algorithm
60 which does not use a cache if there is an integer overflow.
62 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
63 rules for large collation sequences to optimize multiple passes and falls
64 back to alloca if malloc fails, resulting in a possible stack overflow.
65 The implementation now falls back to an uncached collation sequence lookup
66 if malloc fails.
68 * CVE-2013-4788 The pointer guard used for pointer mangling was not
69 initialized for static applications resulting in the security feature
70 being disabled. The pointer guard is now correctly initialized to a
71 random value for static applications. Existing static applications need
72 to be recompiled to take advantage of the fix (bug 15754).
74 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
75 to the d_name member of struct dirent, or omit the terminating NUL
76 character. (Bugzilla #14699).
78 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
79 aligned_alloc functions could allocate too few bytes or corrupt the
80 heap when passed very large allocation size values (Bugzilla #15855,
81 #15856, #15857).
83 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
84 for AF_INET6 has been fixed (Bugzilla #16072).
86 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
87 pap_CW, quz_PE, the_NP.
89 * Substantially revised locales: gd_GB, ht_HT
91 * The LC_ADDRESS field was updated to support country_car for almost all
92 supported locales.
94 * ISO 1427 definitions were updated.
96 * ISO 3166 definitions were updated.
98 * The localedef utility now supports --big-endian and --little-endian
99 command-line options to generate locales for a different system from that
100 for which the C library was built.
102 * Binary locale files now only depend on the endianness of the system for
103 which they are generated and not on other properties of that system. As a
104 consequence, binary files generated with new localedef may be incompatible
105 with old versions of the GNU C Library, and binary files generated with
106 old localedef may be incompatible with this version of the GNU C Library,
107 in the following circumstances:
109 + Locale files may be incompatible on m68k systems.
111 + Locale archive files (but not separate files for individual locales) may
112 be incompatible on systems where plain "char" is signed.
114 * The configure option --disable-versioning has been removed. Builds with
115 --disable-versioning had not worked for several years.
117 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
118 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
120 * SystemTap probes for malloc have been introduced.
122 * SystemTap probes for slow multiple precision fallback paths of
123 transcendental functions have been introduced.
125 * Support for powerpc64le has been added.
127 * The soft-float powerpc port now supports e500 processors.
129 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
131 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
132 set of header declarations that are enabled by default, even when other
133 feature test macros or compiler options such as -std=c99 would otherwise
134 disable some of those declarations.
136 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
137 conflict with POSIX. The libbsd-compat library (which was a dummy library
138 that did nothing) has also been removed.
140 * Preliminary documentation about Multi-Thread, Async-Signal and
141 Async-Cancel Safety has been added.
142 \f
143 Version 2.18
145 * The following bugs are resolved with this release:
147 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
148 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
149 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
150 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
151 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
152 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
153 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
154 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
155 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
156 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
157 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
158 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
159 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
160 15759.
162 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
163 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
164 Distributions can re-enable building and using pt_chown via the new configure
165 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
166 considerable security risks and should only be used if the distribution
167 understands and accepts the risks.
169 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
170 #15078).
172 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
173 fixed (Bugzilla #15330).
175 * Add support for calling C++11 thread_local object destructors on thread
176 and program exit. This needs compiler support for offloading C++11
177 destructor calls to glibc.
179 * Improved worst case performance of libm functions with double inputs and
180 output.
182 * Support for priority inherited mutexes in pthread condition variables on
183 non-x86 architectures.
185 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
187 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
189 * Optimized string functions for ARM. Implemented by Will Newton and
190 Richard Henderson.
192 * Optimized libm functions for SPARC. Implemented by David S. Miller.
194 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
195 Richard Henderson.
197 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
198 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
200 * Added a benchmark framework to track performance of functions in glibc.
202 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
203 It is based on draft TS 18661 and currently enabled as a GNU extension.
205 * On Linux, the clock function now uses the clock_gettime system call
206 for improved precision, rather than old times system call.
208 * Added support for version-3 tz format files. This is needed when using
209 the tz database release 2013e or later, and affects a few unusual cases --
210 currently only TZ='America/Godthab' for time stamps after 2037.
212 * Added new API functions pthread_getattr_default_np and
213 pthread_setattr_default_np to get and set the default pthread
214 attributes of a process.
216 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
217 This may improve lock scaling of existing programs on TSX capable systems.
218 When the --enable-lock-elision=yes parameter is specified at configure
219 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
220 mutexes.
222 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
223 availability). Implemented by Ryan S. Arnold.
225 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
226 \f
227 Version 2.17
229 * The following bugs are resolved with this release:
231 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
232 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
233 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
234 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
235 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
236 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
237 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
238 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
239 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
240 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
241 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
242 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
243 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
244 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
245 14879, 14889, 14893, 14898, 14914.
247 * Optimization of memcpy for MIPS.
249 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
250 EMFILE has been fixed (Bugzilla #14889).
252 * The add-on ports collection is now distributed in the "ports" subdirectory
253 of the main GNU C Library distribution, rather than separately.
255 * Port to ARM AArch64 contributed by Linaro.
257 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
258 Optimized versions of memcpy, memset, and memcmp added for System z10 and
259 zEnterprise z196.
260 Implemented by Andreas Krebbel.
262 * The new function secure_getenv allows secure access to the environment,
263 returning NULL if running in a SUID/SGID process. This function replaces
264 the internal function __secure_getenv.
266 * SystemTap static probes have been added into the dynamic linker.
267 Implemented by Gary Benson.
269 * Optimizations of string functions strstr, strcasestr and memmem.
270 Implemented by Maxim Kuvyrkov.
272 * The minimum Linux kernel version that this version of the GNU C Library
273 can be used with is 2.6.16.
275 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
276 powerpc POWER7. Implemented by Will Schmidt.
278 * New configure option --disable-nscd builds the C library such that it
279 never attempts to contact the Name Service Caching Daemon (nscd).
280 New configure option --disable-build-nscd avoids building nscd itself;
281 this is the default if --disable-nscd is used.
283 * Improved support for cross-compilation, including cross-testing and
284 bootstrap builds without a previously built glibc.
286 * Several testsuite tests are now able to test multiple IFUNC variants of an
287 interface, rather than just testing the one that would be chooen by
288 default.
290 * New configure options --with-bugurl and --with-pkgversion, for
291 distributors to use to embed their bug-reporting and package version
292 information in --help and --version output.
294 * The ttyname and ttyname_r functions on Linux now fall back to searching for
295 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
296 allows creation of chroots without the procfs mounted on /proc.
298 * The `crypt' function now fails if passed salt bytes that violate the
299 specification for those values. On Linux, the `crypt' function will
300 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
301 enabled, and fail on encrypted strings using the MD5 or DES algorithm
302 when the mode is enabled.
304 * The `clock_*' suite of functions (declared in <time.h>) is now available
305 directly in the main C library. Previously it was necessary to link with
306 -lrt to use these functions. This change has the effect that a
307 single-threaded program that uses a function such as `clock_gettime' (and
308 is not linked with -lrt) will no longer implicitly load the pthreads
309 library at runtime and so will not suffer the overheads associated with
310 multi-thread support in other code such as the C++ runtime library.
312 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
313 sat_IN, and szl_PL.
314 \f
315 Version 2.16
317 * The following bugs are resolved with this release:
319 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
320 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
321 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
322 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
323 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
324 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
325 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
326 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
327 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
328 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
329 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
330 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
331 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
332 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
333 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
334 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
335 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
336 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
337 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
338 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
339 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
340 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
341 14277, 14278.
343 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
344 configuring glibc with:
345 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
346 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
347 Implemented by H.J. Lu.
349 * ISO C11 support:
351 + define static_assert
353 + do not declare gets
355 + declare at_quick_exit and quick_exit also for ISO C11
357 + aligned_alloc. NB: The code is deliberately allows the size parameter
358 to not be a multiple of the alignment. This is a moronic requirement
359 in the standard but it is only a requirement on the caller, not the
360 implementation.
362 + timespec_get added
364 + uchar.h support added
366 + CMPLX, CMPLXF, CMPLXL added
368 Implemented by Ulrich Drepper.
370 * Support for the IA-64 has been moved to ports.
372 * Remove support for anything but ELF binary format
374 * Checking versions of poll, ppoll added.
375 Implemented by Ulrich Drepper.
377 * More generic and 64-bit performance optimizations to math functions.
378 Implemented by Ulrich Drepper.
380 * New configure option --enable-obsolete-rpc makes the deprecated RPC
381 headers and functions available at compile time as they were before
382 version 2.14. This option will be removed at some time in the future
383 after the TI-RPC library becomes fully sufficient for the needs of
384 existing applications.
386 * Compatibility code for Linux kernel versions before 2.4 has been removed.
387 Note that glibc is not expected to work with any Linux kernel version
388 before 2.6.
390 * New header <sys/auxv.h> and function getauxval allowing easy access to
391 the AT_* key-value pairs passed from the Linux kernel. The header also
392 defines the HWCAP_* bits associated with the AT_HWCAP key.
394 * New locales: mag_IN
396 * New configure option --enable-systemtap builds SystemTap static probes
397 into libc for setjmp and longjmp and into libpthread for various operations.
398 So far the setjmp/longjmp probes and some of the libpthread probes are
399 provided only for i*86 and x86_64.
400 Implemented by Roland McGrath and Rayson Ho.
402 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
404 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
405 and Will Schmidt.
407 * More optimized functions for SPARC. Implemented by David S. Miller.
409 * Improved support for cross-compilation, especially bootstrap builds
410 without a previously built glibc.
412 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
413 Chris Metcalf from Tilera.
415 * Support for the old ARM ABI has been removed from ports. Only the EABI is
416 now supported for ARM processors.
418 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
419 as the name of the dynamic linker, to distinguish it from the
420 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
422 * Support for CRIS has been removed from ports.
424 * A new class of installed header has been documented for low-level
425 platform-specific functionality. PowerPC added the first instance with a
426 function to provide time base register access. Contributed by Tulio
427 Magno Quites Machado Filho.
429 * ix86 configurations now install header files that are consistent with
430 what x86-64 configurations install. These same header files can be used
431 for -m32, -m64, or -mx32 builds.
432 Contributed by H.J. Lu.
434 * Math library bug fixes. A thorough audit of all open math library bugs was
435 conducted by Joseph Myers. Significant progress was made on many math
436 library bugs resulting in more accurate exceptions and function results.
437 Many thanks to all those that contributed including Andreas Jaeger for his
438 patch review and work on the x87 trigonometric instruction issues.
440 * Timezone data is no longer installed. Timezone-related binaries and scripts
441 will continue to be installed. Users should obtain their timezone data from
442 their distribution provider or from the tzdata package at
443 <ftp://munnari.oz.au/pub/>.
444 \f
445 Version 2.15
447 * The following bugs are resolved with this release:
449 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
450 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
451 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
452 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
453 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
454 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
455 13484, 13506, 13515, 13523, 13524, 13538, 13540
457 * New program pldd to list loaded object of a process
458 Implemented by Ulrich Drepper.
460 * Add nss_db support back to glibc. No more dependency on Berkeley db
461 and support for initgroups lookups.
462 Implemented by Ulrich Drepper.
464 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
465 Contributed by HJ Lu.
467 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
468 Contributed by HJ Lu.
470 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
471 on x86-32 and x86-64.
472 Contributed by Liubov Dmitrieva.
474 * Optimized strchr and strrchr for SSE on x86-32.
475 Contributed by Liubov Dmitrieva.
477 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
478 for x86-64 and x86-32.
479 Contributed by Liubov Dmitrieva.
481 * New interfaces: scandirat, scandirat64
482 Implemented by Ulrich Drepper.
484 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
485 Implemented by Ulrich Drepper.
487 * nscd now also caches the netgroup database.
488 Implemented by Ulrich Drepper.
490 * Integrate libm with gcc's -ffinite-math-only option.
491 Implemented by Ulrich Drepper.
493 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
494 to math functions. Implemented by Ulrich Drepper.
496 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
497 Implemented by Ulrich Drepper.
499 * New Linux interfaces: process_vm_readv, process_vm_writev
501 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
502 Implemented by Ulrich Drepper.
504 * Optimized nearbyint and strcasecmp for PPC.
505 Implemented by Adhemerval Zanella.
507 * New locales: bho_IN, unm_US, es_CU, ta_LK
508 \f
509 Version 2.14
511 * The following bugs are resolved with this release:
513 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
514 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
515 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
516 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
517 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
518 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
519 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
520 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
521 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
522 12795, 12811, 12813, 12814, 12841
524 * The RPC implementation in libc is obsoleted. Old programs keep working
525 but new programs cannot be linked with the routines in libc anymore.
526 Programs in need of RPC functionality must be linked against TI-RPC.
527 The TI-RPC implementation is IPv6 enabled and there are other benefits.
529 Visible changes of this change include (obviously) the inability to link
530 programs using RPC functions without referencing the TI-RPC library and the
531 removal of the RPC headers from the glibc headers.
532 Implemented by Ulrich Drepper.
534 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
535 syncfs, setns, sendmmsg
537 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
538 yue_HK, lij_IT, mhr_RU
540 * New encodings: CP770, CP771, CP772, CP773, CP774
542 * New program sotruss to trace calls through PLTs
543 Implemented by Ulrich Drepper.
545 * The malloc hook implementation is marked deprecated and will be removed
546 from the default implementation in the next version. The design never
547 worked ever since the introduction of threads. Even programs which do
548 not create threads themselves can use multiple threads created internally.
549 \f
550 Version 2.13
552 * The following bugs are resolved with this release:
554 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
555 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
556 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
557 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
558 12378, 12394, 12397
560 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
562 * POWER7 optimizations: memset, memcmp, strncmp
564 * New optimized string functions for x86-64: strnlen (SSE2),
565 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
566 Implemented by Ulrich Drepper.
567 \f
568 Version 2.12
570 * The following bugs are resolved with this release:
572 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
573 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
574 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
575 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
576 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
577 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
578 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
579 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
581 * New interfaces: pthread_getname_np, pthread_setname_np
583 * New Linux interface: recvmmsg
585 * STT_GNU_IFUNC implemented for Sparc by David Miller.
587 * The dynamic linker now recognizes supported ABI versions from the
588 EI_ABIVERSION field in the ELF header.
589 Implemented by Ulrich Drepper.
591 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
592 will not be used to fill in password fields in the passwd.byname replies.
593 Instead it is used to synthesize the shadow.byname table, should it be
594 missing. This is a useful mode in some installations involving Solaris.
595 Implemented by Ulrich Drepper.
597 * New locales: kok_IN, sq_MK, cv_RU
598 \f
599 Version 2.11
601 * The following bugs are resolved with this release:
603 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
604 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
605 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
606 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
607 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
608 10789, 10817, 10823, 10840, 10847
610 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
611 mkostemps64
612 Implemented by Ulrich Drepper.
614 * Checking version of longjmp added that fails if an uninitialized stack
615 frame would be created. Implemented by Ulrich Drepper.
617 * STT_GNU_IFUNC is now supported in static executables.
618 Implemented by H.J. Lu.
620 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
622 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
623 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
624 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
625 Contributed by H.J. Lu.
627 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
628 Implemented by Ulrich Drepper.
630 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
631 strstr, strcasestr.
632 Contributed by H.J. Lu.
634 * Support for fma instruction in AVX on x86-64.
635 Implemented by H.J. Lu and Ulrich Drepper.
637 * AVX support in x86-64 auditing support in ld.so.
638 Implemented by H.J. Lu.
640 * STB_GNU_UNIQUE support added.
641 Implemented by Ulrich Drepper.
643 * Implement second fallback mode for optimized DNS lookup for even more
644 broken environments. If two requests from the same port are not
645 handled correctly close the socket and open a new one before sending
646 the second request. The 'single-request-reopen' option in /etc/resolv.conf
647 can be used to select this mode right away, instead of rediscovering the
648 necessity is every process again.
649 Implemented by Ulrich Drepper.
651 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
652 Implemented by Adam Tkac.
654 * Optimized iconv conversions for S390x.
655 Implemented by Andreas Krebbel.
657 * Using condvars with PI mutexes is now more efficient due to kernel
658 support for requeueing to PI futexes. NPTL support added for x86-64.
659 Implemented by Ulrich Drepper.
661 * New locales: ps_AF, my_MM
662 \f
663 Version 2.10
665 * The following bugs are resolved with this release:
667 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
668 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
669 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
670 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
671 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
673 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
674 Implemented by Ulrich Drepper.
676 * New Linux interfaces: accept4, fallocate, fallocate64.
677 Implemented by Ulrich Drepper.
679 * Correct declarations of string function when used in C++ code. This
680 could lead to compile errors for invalid C++ code.
682 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
683 now in POSIX.
685 * New POSIX 2008 interface: psiginfo
686 Implemented by Ulrich Drepper.
688 * New ISO C++1x interfaces: quick_exit, at_quick_exit
689 Implemented by Ulrich Drepper.
691 * Support for selecting between multiple function definitions at runtime
692 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
694 * The libcrypt library can now use the hash function implementations in
695 NSS. Implemented by Ulrich Drepper.
697 * The malloc implementation can be compiled to be less memory efficient
698 but higher performing in multi-threaded programs.
699 Implemented by Ulrich Drepper.
701 * New locales: nan_TW@latin, ks_IN
703 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
704 Implemented by Ulrich Drepper.
706 * Extended printf hook support. It is possible to use user-defined types
707 and extend existing format specifiers.
708 Implemented by Ulrich Drepper.
710 * Handling for group shadow files has been added.
711 Implemented by Ulrich Drepper.
713 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
714 servers (the case, e.g., for some people using the built-in DNS
715 server in ADSL modems/routers). There is a once-per-process timeout
716 in case of a broken server. To avoid it, users can run nscd or put
717 'options single-request' in /etc/resolv.conf.
718 Implemented by Ulrich Drepper.
719 \f
720 Version 2.9
722 * The following bugs are resolved with this release:
724 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
725 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
726 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
727 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
728 6968, 6974, 6980, 6995, 7008, 7009, 7029
730 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
731 up at the same time. Implemented by Ulrich Drepper.
733 * TLS descriptors for LD and GD on x86 and x86-64.
734 Implemented by Alexandre Oliva.
736 * getaddrinfo now handles DCCP and UDPlite.
737 Implemented by Ulrich Drepper.
739 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
740 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
741 Implemented by Ulrich Drepper.
743 * New implementation of memmem, strstr, and strcasestr which is O(n).
744 Implemented by Eric Blake.
746 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
748 * Implement "e" option for popen to open file descriptor with the
749 close-on-exec flag set. Implemented by Ulrich Drepper.
751 * Implement "b" mode for fmemopen. In this mode writes writes don't
752 implicitly add a NUL byte and seeks from the end of the buffer really
753 use the buffer end, not the string length as the basis.
754 Implemented by Ulrich Drepper.
756 * Many functions, exported and internal, now atomically set the close-on-exec
757 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
759 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
760 Sinhala)
761 Implemented by Pravin Satpute.
763 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
764 \f
765 Version 2.8
767 * The following bugs are resolved with this release:
769 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
770 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
771 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
772 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
773 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
774 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
775 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
777 * New locales: bo_CN, bo_IN, shs_CA.
779 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
781 * Sorting rules for some Indian languages (Devanagari and Gujarati).
782 Implemented by Pravin Satpute.
784 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
786 * nscd caches now all timeouts for DNS entries
787 Implemented by Ulrich Drepper.
789 * nscd is more efficient and wakes up less often.
790 Implemented by Ulrich Drepper.
792 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
793 vdprintf, and obstack_vprintf.
794 Implemented by Jakub Jelinek.
796 * Faster memset for x86-64.
797 Implemented by Harsha Jagasia and H.J. Lu.
799 * Faster memcpy on x86.
800 Implemented by Ulrich Drepper.
802 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
803 Implemented by Ulrich Drepper.
805 * Faster sqrt and sqrtf implemention for some PPC variants.
806 Implemented by Steven Munroe.
807 \f
808 Version 2.7
810 * The following bugs are resolved with this release:
812 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
813 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
814 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
815 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
816 5071, 5103, 5104, 5112, 5113, 5184, 5186
818 * More checking functions: fread, fread_unlocked, open*, mq_open.
819 Implemented by Jakub Jelinek and Ulrich Drepper.
821 * Extend fortification to C++. Implemented by Jakub Jelinek.
823 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
824 by not recognizing 'a' as a modifier when those specs are requested.
825 Implemented by Jakub Jelinek.
827 * PPC optimizations to math and string functions.
828 Implemented by Steven Munroe.
830 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
831 options to be passed. Implemented by Ulrich Drepper.
833 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
835 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
836 Implemented by Ulrich Drepper.
838 * Handle private futexes in the NPTL implementation.
839 Implemented by Jakub Jelinek and Ulrich Drepper.
841 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
842 Implemented by Roland McGrath and Ulrich Drepper.
844 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
846 * SHA-256 and SHA-512 based password encryption.
847 Implemented by Ulrich Drepper.
849 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
850 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
851 yo_NG.
853 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
854 Implemented by Ulrich Drepper.
855 \f
856 Version 2.6
858 * The following bugs are resolved with this release:
860 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
861 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
862 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
863 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
864 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
865 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
866 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
867 4702, 4858
869 * New Linux interfaces: epoll_pwait, sched_getcpu.
871 * New generic interfaces: strerror_l.
873 * nscd can now cache the services database. Implemented by Ulrich Drepper.
874 \f
875 Version 2.5
877 * The following bugs are resolved with this release:
879 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
880 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
881 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
882 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
883 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
884 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
885 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
886 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
887 3225, 3251, 3252, 3253, 3273
889 * For Linux, the sorting of addresses returned by getaddrinfo now also
890 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
891 Implemented by Ulrich Drepper.
893 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
894 Implemented by Ulrich Drepper.
896 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
898 * New iconv module for MIK. Contributed by Alexander Shopov.
900 * For sites with broken group and/or passwd database, the auto-propagate
901 option of nscd can prevent creating ID lookup entries from the results
902 of a name lookup and vice versa. This usually is no problem but some
903 site might have problems with the default behavior.
904 Implemented by Ulrich Drepper.
906 * Iterating over entire database in NIS can be slow. With the
907 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
908 to trade time for memory. The entire database will be read at once.
909 Implemented by Ulrich Drepper.
911 * The interfaces introduced in RFC 3542 have been implemented by
912 Ulrich Drepper.
914 * Support for the new ELF hash table format was added by Ulrich Drepper.
916 * Support for priority inheritance mutexes added by Jakub Jelinek and
917 Ulrich Drepper.
919 * Support for priority protected mutexes added by Jakub Jelinek.
921 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
922 or_IN, csb_PL, fy_NL, sr_ME.
923 \f
924 Version 2.4
926 * More overflow detection functions.
928 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
929 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
931 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
932 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
933 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
934 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
935 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
936 by Masahide Washizawa.
938 * It is now possible to install audit libraries for the dynamic linker using
939 LD_AUDIT. Implemented by Ulrich Drepper.
941 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
942 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
943 For a libc and libpthread that works well on Linux 2.4 kernels, we
944 recommend using the stable 2.3 branch.
946 * The new function open_wmemstream acts like open_memstream,
947 but uses a wchar_t wide character buffer.
949 * The new function ppoll is an improved version of poll, similar to pselect.
951 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
952 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
953 renameat, unlinkat, linkat, symlinkat, readlinkat.
955 * New Linux kernel system calls: unshare,
956 inotify_init, inotify_add_watch, inotify_rm_watch.
958 * The euidaccess function is now also known by the alias eaccess,
959 for compatibility with some other systems.
961 * Timezone data updated to 2006b version.
962 \f
963 Version 2.3.6
965 * The following bugs are resolved with this release:
967 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
968 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
969 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
970 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
971 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
972 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
974 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
976 * As of this release, GCC 4 can be used to compile the C Library.
978 * Timezone data updated to 2005m version.
979 \f
980 Version 2.3.5
982 * The following bugs are resolved with this release:
984 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
985 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
986 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
987 777, 787, 821, 822, 823, 825
989 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
990 \f
991 Version 2.3.4
993 * Support for RFC 3678. Real implementations exist only for Linux so far.
994 Implemented by Ulrich Drepper.
996 * nscd can now cache entries persistently. Expiring entries are reloaded.
997 For speedups the cache can be shared in memory with client processes.
998 Implemented by Ulrich Drepper.
1000 * nscd can now perform SELinux checks.
1001 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1003 * getaddrinfo queries are now cached. Canonical name lookup is performed
1004 efficiently.
1005 Implemented by Ulrich Drepper.
1007 * The nothrow function attribute is used when headers are used by gcc when
1008 compiling C code. This can avoid significant amounts of exception
1009 handling data.
1011 * The malloc functions perform more error checking and are stricter when
1012 it comes to reacting on errors. The default action is to terminate
1013 the process after showing an error message. Implemented by Ulrich Drepper.
1015 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1016 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1018 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1019 namespaces using the new function dlmopen(). This feature is of course,
1020 like most other dynamic loading functionality, not available in statically
1021 linked applications. Implemented by Ulrich Drepper.
1023 * Low-overhead boundary checking variants of string and some stdio functions
1024 were added. These are to be used in conjunction with a gcc patch by
1025 Jakub Jelinek which adds calls to these functions if possible.
1026 Implemented by Jakub Jelinek and Ulrich Drepper.
1028 * Old code for several operating systems and machine architectures that
1029 have not been in working condition in a long time have been removed from
1030 the main source tree maintained by the GNU C Library's maintainers.
1031 These files are now reside in the separate `ports' source module
1032 that is usable as an add-on when building the library.
1033 \f
1034 Version 2.3.3
1036 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1037 interrogate the dynamic linker, compatible with the Solaris interface.
1039 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1040 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1042 * getifaddrs now uses the netlink interface on Linux to get its information.
1043 Implemented by Thorsten Kukuk.
1045 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1046 Implemented by Ulrich Drepper.
1048 * support for non-executable stacks on x86 has been added. Changes mostly
1049 by Roland McGrath.
1051 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1052 and Ulrich Drepper.
1054 * getaddrinfo now performs destination address selection according to
1055 RFC 3484.
1056 \f
1057 Version 2.3.2
1059 * Thread-safe interfaces for many functions that access locale data
1060 were added in version 2.3, but these features were omitted from NEWS.
1061 Many functions have variants with an `_l' suffix that take a `locale_t'
1062 object as a parameter rather than consulting the current locale.
1063 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1064 create and maintain `locale_t' objects. Additionally, the new function
1065 `uselocale' sets "the current locale" (as used by functions not so
1066 parameterized) set for an individual thread. These features were added
1067 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1069 * The functions getresuid, getresgid, setresuid, and setresgid, which
1070 have long been available on Linux, are now declared in <unistd.h>
1071 and are now also available on the Hurd.
1073 * ELF thread-local storage support (TLS) now works on x86-64.
1075 * The new dynamic string token $LIB is expanded in shared library names.
1076 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1078 * Aldy Hernandez contributed complete software floating point support for
1079 PowerPC machines with no FPU.
1081 * fexecve is implemented on Linux.
1083 * The `btowc' function should work at least twice as fast due to
1084 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1086 * With approriate thread add-ons cancelable functions are now implemented
1087 in libc.so as well. No need to call the function in libpthread. This
1088 change allowed to finally disable the incorrect and expensive handling
1089 of weak definition in ld.so.
1091 * Yet more PLT entries in libc.so have been removed. We finally arrived
1092 at the bare minimum. Startup times improved appropriately.
1094 * Support for the new Linux/x86 system call interface was added. The
1095 AT_SYSINFO auxiliary vector entry is recognized and handled.
1096 \f
1097 Version 2.3
1099 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1100 charsets.
1102 * iconv (the program and the interface) now accepts empty names (excluding
1103 options like //TRANSLIT) to mean "use charset of current locale".
1105 * localedef can now transliterate characters in strings which are not in
1106 the provided charmap. The information from the input locale is used.
1108 * Prelinking support was added for ELF targets. This requires additional
1109 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1111 * Read-only stdio streams now use mmap to speed up operation by eliminating
1112 copying and buffer underflows. To use add 'm' to the mode string of
1113 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1115 * The malloc functions were completely rewritten by Wolfram Gloger based
1116 on Doug Lea's malloc-2.7.0.c.
1118 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1119 implementation of regex.
1121 * Bruno Haible upgraded the iconv and locale implementation to support
1122 Unicode 3.2.
1124 * Contents of the LC_* and LANG environment variables in the CEN style are
1125 not recognized anymore. It never was used. Change by Ulrich Drepper.
1127 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1128 thread-local storage (TLS) ABI on some platforms.
1129 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1131 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1132 EUC-JISX0213, and TSCII.
1134 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1135 BSD-compatible interface for getting all network interface addresses.
1136 Implementation for IPv4 by Roland McGrath.
1138 * Loading of locale data is faster due to the introduction of a locale
1139 archive. Implemented by Roland McGrath and Ulrich Drepper.
1141 * Startup times are significantly reduced by not using exported functions
1142 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1143 and Ulrich Drepper.
1145 * Steven Munroe contributed a port to PowerPC64/Linux.
1146 \f
1147 Version 2.2.6
1149 * The Hurd now uses the GNU libio implementation of stdio rather than the
1150 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1152 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1153 with the same behavior as the Linux system call of the same name.
1154 \f
1155 Version 2.2.5
1157 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1158 128-bit long double format.
1160 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1161 IBM1161, and IBM1162 charsets.
1163 * Andreas Jaeger contributed a port to x86-64/Linux.
1165 * Peter Bruin contributed a port to PowerPC/Hurd.
1167 * libc functions using I/O streams now can handle wide-oriented streams
1168 as well.
1170 * optimizations in the dynamic linker. Binaries created by recent binutils
1171 versions start up quicker due to reduced time spent on relocations.
1173 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1174 \f
1175 Version 2.2.4
1177 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1178 asinh, atanh, j0 for the 128-bit long double format.
1180 * Bruno Haible updated all the code handling Unicode in some form to
1181 support Unicode 3.1.
1183 * Speed of regex for single-byte locales is back to previous levels.
1184 Patch by Isamu Hasegawa.
1186 * Alpha, SPARC, and IA-64 now also using floating stacks.
1188 * Startup time of internationalized applications greatly improved through
1189 iconv cache. Use iconvconfig to generate the cache file.
1190 Contributed by Ulrich Drepper.
1192 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1193 severe performance problems. Patch by David Mosberger.
1195 * The Hurd port got a lot more functionality like AIO, various stdio
1196 extensions, etc. Mainly done by Roland McGrath.
1198 * mtrace can now lookup symbols in shared libraries.
1199 \f
1200 Version 2.2.3
1202 * Intel's IA-64 math library is largely integrated. It provides fast and
1203 accurate implementatations for most basic and standard math functions
1204 in float, double, and long double format.
1206 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1207 and asin for the 96-bit long double format and asin, log, tan for the
1208 128-bit long double format.
1210 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1211 The basic double functions exist today. Contributed by Abraham Ziv
1212 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1213 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1215 * An asynchronous name lookup library was added. The interface is designed
1216 after POSIX AIO. The proposal was circulated beforehand to get comments.
1217 No negative ones came in. Implemented by Ulrich Drepper.
1219 * Port to S390/64bit contributed by Martin Schwidefsky
1220 <schwidefsky@de.ibm.com>.
1222 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1223 of functions for Linux/IA-64.
1225 * The RPC code is now thread safe. Threads can now use the same service
1226 of different services at the same time. Patch by Eric Norum
1227 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1229 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1230 family of functions for Linux/S390.
1232 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1233 of functions for Linux/x86.
1235 * Port to Linux/CRIS contributed by Axis Communications.
1236 \f
1237 Version 2.2.2
1239 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1240 we can now check for namespace violations and missing declarations. The
1241 result is that almost all headers are now Unix-compliant (as defined in
1242 the upcoming XPG6). The negative side is that some programs might need
1243 corrections, too, if they depend on the incorrect form of the headers in
1244 previous versions which defined too many symbols and included too many
1245 other headers.
1247 * regex now handles multibyte character sets correctly.
1248 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1250 * iconv (the program) does now conform to the upcoming XPG6 and handles
1251 charmaps. Instead of the charset names the path of charmaps can be
1252 provided and the conversion happens based on this data.
1253 Contributed by Ulrich Drepper.
1255 * The locale program now provides detailed information about the installed
1256 locales. While
1258 locale -a
1260 only lists the names of the supported locales
1262 locale -a --verbose
1264 provides details such as country, language, and codeset name.
1265 Contributed by Ulrich Drepper.
1266 \f
1267 Version 2.2.1
1269 * The gencat program now parses the input file according to the charset
1270 selected by the LC_CTYPE category. This is important for stateful
1271 character sets. To make generating catalogs easier there is a way
1272 to overwrite the charset selected by the locale: before the first
1273 message or $ quote line the catalog can contain a line like
1275 $ codeset=ISO-8859-2
1277 to select the charset (ISO-8859-2 in this case).
1279 Implemented by Shinya Hanataka and Ulrich Drepper.
1281 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1282 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1283 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1285 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1286 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1288 * The LANGUAGE environment variable is now ignored unless the locale is
1289 changed from the default "C" locale.
1291 * The usual bug fixes.
1292 \f
1293 Version 2.2
1295 * Greg McGary added runtime support for bounds checking using gcc's
1296 new -fbounded-pointers option. ix86 target is complete. PowerPC
1297 is in progress.
1299 * Thorsten Kukuk added secure mode support to nscd.
1301 * The Berkeley db libraries have been removed.
1303 Related, the nss_db module is now in a separate package since it
1304 obviously requires a database library being available.
1306 * Wide character I/O streams implemented by Ulrich Drepper.
1308 * Functions from the extended socket API added by Ulrich Drepper.
1310 * Functions feenableexcept and fedisableexcept to control the
1311 behaviour of individual exceptions have been added by Andreas Jaeger.
1313 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1315 * The resolver code has been updated from bind 8.2.3-T5B which supports
1316 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1317 and Mark Kettenis.
1319 This change could in some situations effect backward compatibility. Since
1320 now `_res' is a thread-local instead of a global variable, modifying it
1321 in one thread does not have any effect in other threads.
1323 The resolver library was also extended to allow IPv6 as the transport
1324 protocol for the requests. This work was done by Stig Venaas.
1326 * Compatibility code for K&R C compilers has been removed from the
1327 header files. A ISO C compiler is needed to use the library
1328 (conforming to either C89 or C99 standard).
1330 * Complete rewrite of the localedef program to support multibyte character
1331 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1332 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1333 Implemented by Ulrich Drepper.
1335 Bruno Haible significantly improved the generation and use of the data
1336 structures for the wide character tables.
1338 * Plural handling in gettext implemented by Ulrich Drepper.
1340 * The utmp daemon has been removed.
1342 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1344 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1345 and Yutaka Niibe.
1347 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1349 * POSIX barriers implemented by Kaz Kylheku.
1351 * POSIX spawn function family implemented by Ulrich Drepper.
1353 * POSIX spinlocks are now available.
1355 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1357 * the configure option --enable-kernel=X.Y.Z allows to strip out
1358 compatibility for kernel versions before X.Y.Z. This is currently only
1359 implemented for Linux.
1361 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1362 field sin6_scope_id. This means that all programs using IPv6 should be
1363 recompiled. Don't expect binary compatibility with previous glibc
1364 versions.
1366 * various conversion modules for IBM character sets contributed by
1367 Masahide Washizawa.
1369 * IA-64 port by Jes Sorensen and HJ Lu.
1370 \f
1371 Version 2.1.3
1373 * bug fixes
1375 \f
1376 Version 2.1.2
1378 * bug fixes
1380 \f
1381 Version 2.1.1
1383 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1385 * New xdr functions are added; some rpc functions are now 64bit clean.
1387 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1389 * Fixed known incompatibilities with glibc 2.0.
1391 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1393 * Optimized a number of functions (especially the ELF dynamic loader).
1395 * Update timezone data files.
1397 * lots of charmaps corrections
1399 * some new locale definitions and charmaps
1401 \f
1402 Version 2.1
1404 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1405 conform to POSIX member type requirements. Symbol versions have been
1406 adjusted as needed within the library, and for direct use by applications,
1407 but there is potential for problems if third-party libraries use
1408 struct timeval as part of their interface. This does not present
1409 a problem for X and other "essential" system libraries.
1411 * An additional locale model to support C++ Standard Library locale
1412 model and probably more was implemented by Ulrich Drepper.
1414 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1415 symbol level.
1417 * Miles Bader provided the `argp' function family to support hierachical
1418 command line argument parsing, layered on top of getopt.
1420 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1422 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1423 numbers.
1425 * scanf recognizes the %a and %A format for scanning floating point numbers.
1427 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1428 information and interfaces for the available integer types.
1430 * about 130 new math functions were added to implement the ISO C9x math
1431 library.
1433 * the new header <complex.h> contains definitions of the complex math
1434 functions from ISO C 9X.
1436 * the new header <tgmath.h> defines generic macros to use complex or
1437 real valued functions.
1439 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1441 * Andreas Jaeger provided a test suite for the math library.
1443 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1445 * Ulrich Drepper added character set conversion functions (iconv).
1447 * Optimized string functions have been added.
1449 * The localedata addon is now part of glibc.
1451 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1453 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1454 daemon for NSS (nscd).
1456 Missing a better place here are some numbers on improvements. Under
1457 Linux 2.1.125 un-tar-ing the kernel sources takes
1459 user system wall
1461 using local files 12.19s 6.88s 22.91s
1463 using NIS 13.92s 8.91s 26.34s
1465 using NIS & nscd 10.37s 7.34s 25.30s
1467 using NIS+ 27.57s 30.37s 640.46s
1469 using NIS+ & nscd 10.25s 7.83s 26.51s
1471 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1473 Keep in mind that non-namelookup related operations dominate above times.
1474 It was just a common complain that using NIS+ unpacking the kernel is
1475 horribly slow.
1477 [1] The old nscd implementation is not available anymore since it was
1478 distributed with glibc up to version 2.0.98 and thus is now replaced.
1480 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1482 * Mark Kettenis provided a Hesiod NSS module.
1484 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1485 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1487 * rcmd can now handle netgroups (Dick Streefland).
1489 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1490 Bambrough.
1492 * Support for the IPv6 protocol has been added to the socket API, as per the
1493 latest draft standards.
1495 * Support for Linux 2.2 has been added.
1497 * Interface changes relative to the latest 2.0.x release:
1498 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1499 addseverity NEW: Unix98
1500 alphasort64 NEW: LFS
1501 argp_err_exit_status NEW: argp, GNU ext
1502 argp_error NEW: argp, GNU ext
1503 argp_failure NEW: argp, GNU ext
1504 argp_help NEW: argp, GNU ext
1505 argp_parse NEW: argp, GNU ext
1506 argp_program_bug_address NEW: argp, GNU ext
1507 argp_program_version NEW: argp, GNU ext
1508 argp_program_version_hook NEW: argp, GNU ext
1509 argp_state_help NEW: argp, GNU ext
1510 argp_usage NEW: argp, GNU ext
1511 authdes_create NEW: Secure RPC
1512 authdes_getucred NEW: Secure RPC
1513 authdes_pk_create NEW: Secure RPC
1514 backtrace NEW: GNU ext.
1515 backtrace_symbols NEW: GNU ext.
1516 backtrace_symbols_fd NEW: GNU ext.
1517 cacos NEW: ISO C 9x
1518 cacosf NEW: ISO C 9x
1519 cacosh NEW: ISO C 9x
1520 cacoshf NEW: ISO C 9x
1521 cacoshl NEW: ISO C 9x
1522 cacosl NEW: ISO C 9x
1523 capget NEW: kernel
1524 capset NEW: kernel
1525 carg NEW: ISO C 9x
1526 cargf NEW: ISO C 9x
1527 cargl NEW: ISO C 9x
1528 casin NEW: ISO C 9x
1529 casinf NEW: ISO C 9x
1530 casinh NEW: ISO C 9x
1531 casinhf NEW: ISO C 9x
1532 casinhl NEW: ISO C 9x
1533 casinl NEW: ISO C 9x
1534 catan NEW: ISO C 9x
1535 catanf NEW: ISO C 9x
1536 catanh NEW: ISO C 9x
1537 catanhf NEW: ISO C 9x
1538 catanhl NEW: ISO C 9x
1539 catanl NEW: ISO C 9x
1540 cbc_crypt NEW: Secure RPC
1541 ccos NEW: ISO C 9x
1542 ccosf NEW: ISO C 9x
1543 ccosh NEW: ISO C 9x
1544 ccoshf NEW: ISO C 9x
1545 ccoshl NEW: ISO C 9x
1546 ccosl NEW: ISO C 9x
1547 cexp NEW: ISO C 9x
1548 cexpf NEW: ISO C 9x
1549 cexpl NEW: ISO C 9x
1550 cimag NEW: ISO C 9x
1551 cimagf NEW: ISO C 9x
1552 cimagl NEW: ISO C 9x
1553 clearerr_locked REMOVED
1554 clntunix_create NEW: sunrpc ext
1555 clog NEW: ISO C 9x
1556 clog10 NEW: ISO C 9x
1557 clog10f NEW: ISO C 9x
1558 clog10l NEW: ISO C 9x
1559 clogf NEW: ISO C 9x
1560 clogl NEW: ISO C 9x
1561 conj NEW: ISO C 9x
1562 conjf NEW: ISO C 9x
1563 conjl NEW: ISO C 9x
1564 cpow NEW: ISO C 9x
1565 cpowf NEW: ISO C 9x
1566 cpowl NEW: ISO C 9x
1567 cproj NEW: ISO C 9x
1568 cprojf NEW: ISO C 9x
1569 cprojl NEW: ISO C 9x
1570 creal NEW: ISO C 9x
1571 crealf NEW: ISO C 9x
1572 creall NEW: ISO C 9x
1573 creat64 NEW: LFS
1574 csin NEW: ISO C 9x
1575 csinf NEW: ISO C 9x
1576 csinh NEW: ISO C 9x
1577 csinhf NEW: ISO C 9x
1578 csinhl NEW: ISO C 9x
1579 csinl NEW: ISO C 9x
1580 csqrt NEW: ISO C 9x
1581 csqrtf NEW: ISO C 9x
1582 csqrtl NEW: ISO C 9x
1583 ctan NEW: ISO C 9x
1584 ctanf NEW: ISO C 9x
1585 ctanh NEW: ISO C 9x
1586 ctanhf NEW: ISO C 9x
1587 ctanhl NEW: ISO C 9x
1588 ctanl NEW: ISO C 9x
1589 des_setparity NEW: Secure RPC
1590 ecb_crypt NEW: Secure RPC
1591 endutxent NEW: Unix98
1592 exp10 NEW: ISO C 9x
1593 exp10f NEW: ISO C 9x
1594 exp10l NEW: ISO C 9x
1595 exp2 NEW: ISO C 9x
1596 exp2f NEW: ISO C 9x
1597 exp2l NEW: ISO C 9x
1598 fattach NEW: STREAMS
1599 fdetach NEW: STREAMS
1600 fdim NEW: ISO C 9x
1601 fdimf NEW: ISO C 9x
1602 fdiml NEW: ISO C 9x
1603 feclearexcept NEW: ISO C 9x
1604 fegetenv NEW: ISO C 9x
1605 fegetexceptflag NEW: ISO C 9x
1606 fegetround NEW: ISO C 9x
1607 feholdexcept NEW: ISO C 9x
1608 feof_locked REMOVED
1609 feraiseexcept NEW: ISO C 9x
1610 ferror_locked REMOVED
1611 fesetenv NEW: ISO C 9x
1612 fesetexceptflag NEW: ISO C 9x
1613 fesetround NEW: ISO C 9x
1614 fetestexcept NEW: ISO C 9x
1615 feupdateenv NEW: ISO C 9x
1616 fflush_locked REMOVED
1617 ffsl NEW: GNU ext.
1618 ffsll NEW: GNU ext.
1619 fgetpos64 NEW: LFS
1620 fgets_unlocked NEW: GNU ext.
1621 fileno_locked REMOVED
1622 fma NEW: ISO C 9x
1623 fmaf NEW: ISO C 9x
1624 fmal NEW: ISO C 9x
1625 fmax NEW: ISO C 9x
1626 fmaxf NEW: ISO C 9x
1627 fmaxl NEW: ISO C 9x
1628 fmin NEW: ISO C 9x
1629 fminf NEW: ISO C 9x
1630 fminl NEW: ISO C 9x
1631 fmtmsg NEW: Unix98
1632 fopen64 NEW: LFS
1633 fputc_locked REMOVED
1634 fputs_unlocked NEW: GNU ext.
1635 fread_unlocked NEW: GNU ext.
1636 freopen64 NEW: LFS
1637 fseeko NEW: Unix98
1638 fsetpos64 NEW: LFS
1639 fstatfs64 NEW: LFS
1640 fstatvfs NEW: Unix98
1641 fstatvfs64 NEW: LFS
1642 ftello NEW: Unix98
1643 ftello64 NEW: LFS
1644 ftruncate64 NEW: LFS
1645 ftw64 NEW: LFS
1646 fwrite_unlocked NEW: GNU ext.
1647 gai_strerror NEW: IPv6
1648 gamma_r REMOVED
1649 gammaf_r REMOVED
1650 gammal_r REMOVED
1651 getchar_locked REMOVED
1652 getdate NEW: Unix98
1653 getdate_err NEW: Unix98
1654 getdate_r NEW: GNU ext.
1655 getmsg NEW: STREAMS
1656 getnameinfo NEW: IPv6
1657 getnetname NEW: Secure RPC
1658 getpmsg NEW: STREAMS
1659 getpt NEW: Unix98 PTY
1660 getrlimit64 NEW: LFS
1661 getutxent NEW: Unix98
1662 getutxid NEW: Unix98
1663 getutxline NEW: Unix98
1664 glob64 NEW: GNU ext.
1665 globfree64 NEW: GNU ext.
1666 gnu_get_libc_release NEW: GNU ext.
1667 gnu_get_libc_version NEW: GNU ext.
1668 grantpt NEW: Unix98 PTY
1669 host2netname NEW: Secure RPC
1670 iconv NEW: iconv
1671 iconv_close NEW: iconv
1672 iconv_open NEW: iconv
1673 if_freenameindex NEW: IPv6
1674 if_indextoname NEW: IPv6
1675 if_nameindex NEW: IPv6
1676 if_nametoindex NEW: IPv6
1677 in6addr_any NEW: IPv6
1678 in6addr_loopback NEW: IPv6
1679 inet6_isipv4mapped NEW: IPv6
1680 isastream NEW: STREAMS
1681 iswblank NEW: GNU ext.
1682 key_decryptsession NEW: Secure RPC
1683 key_decryptsession_pk NEW: Secure RPC
1684 key_encryptsession NEW: Secure RPC
1685 key_encryptsession_pk NEW: Secure RPC
1686 key_gendes NEW: Secure RPC
1687 key_get_conv NEW: Secure RPC
1688 key_secretkey_is_set NEW: Secure RPC
1689 key_setnet NEW: Secure RPC
1690 key_setsecret NEW: Secure RPC
1691 llrint NEW: ISO C 9x
1692 llrintf NEW: ISO C 9x
1693 llrintl NEW: ISO C 9x
1694 llround NEW: ISO C 9x
1695 llroundf NEW: ISO C 9x
1696 llroundl NEW: ISO C 9x
1697 log2 NEW: ISO C 9x
1698 log2f NEW: ISO C 9x
1699 log2l NEW: ISO C 9x
1700 lrint NEW: ISO C 9x
1701 lrintf NEW: ISO C 9x
1702 lrintl NEW: ISO C 9x
1703 lround NEW: ISO C 9x
1704 lroundf NEW: ISO C 9x
1705 lroundl NEW: ISO C 9x
1706 lseek64 NEW: LFS
1707 makecontext NEW: Unix98
1708 mempcpy NEW: GNU ext.
1709 mmap64 NEW: LFS
1710 moncontrol REMOVED
1711 modify_ldt NEW: kernel
1712 nan NEW: ISO C 9x
1713 nanf NEW: ISO C 9x
1714 nanl NEW: ISO C 9x
1715 nearbyint NEW: ISO C 9x
1716 nearbyintf NEW: ISO C 9x
1717 nearbyintl NEW: ISO C 9x
1718 netname2host NEW: Secure RPC
1719 netname2user NEW: Secure RPC
1720 nexttoward NEW: ISO C 9x
1721 nexttowardf NEW: ISO C 9x
1722 nexttowardl NEW: ISO C 9x
1723 nftw NEW: Unix98
1724 nftw64 NEW: LFS
1725 open64 NEW: LFS
1726 passwd2des NEW: Secure RPC
1727 pow10 NEW: GNU ext.
1728 pow10f NEW: GNU ext.
1729 pow10l NEW: GNU ext.
1730 pread NEW: Unix98
1731 pread64 NEW: LFS
1732 printf_size NEW: GNU ext.
1733 printf_size_info NEW: GNU ext.
1734 profil_counter REMOVED
1735 pthread_mutexattr_getkind_np REPLACED
1736 pthread_mutexattr_setkind_np REPLACED
1737 ptsname NEW: Unix98 PTY
1738 ptsname_r NEW: Unix98 PTY
1739 putc_locked REMOVED
1740 putchar_locked REMOVED
1741 putgrent NEW: GNU ext.
1742 putmsg NEW: STREAMS
1743 putpmsg NEW: STREAMS
1744 pututxline NEW: Unix98
1745 pwrite NEW: Unix98
1746 pwrite64 NEW: LFS
1747 readdir64 NEW: LFS
1748 readdir64_r NEW: LFS
1749 remquo NEW: ISO C 9x
1750 remquof NEW: ISO C 9x
1751 remquol NEW: ISO C 9x
1752 round NEW: ISO C 9x
1753 roundf NEW: ISO C 9x
1754 roundl NEW: ISO C 9x
1755 rtime NEW: GNU ext.
1756 scalbln NEW: ISO C 9x
1757 scalblnf NEW: ISO C 9x
1758 scalblnl NEW: ISO C 9x
1759 scandir64 NEW: LFS
1760 sendfile NEW: kernel
1761 setcontext NEW: Unix98
1762 setrlimit64 NEW: LFS
1763 setutxent NEW: Unix98
1764 sighold NEW: Unix98
1765 sigignore NEW: Unix98
1766 sigqueue NEW: POSIX.1b
1767 sigrelse NEW: Unix98
1768 sigset NEW: POSIX.1b
1769 sigtimedwait NEW: POSIX.1b
1770 sigwaitinfo NEW: POSIX.1b
1771 sincos NEW: GNU ext.
1772 sincosf NEW: GNU ext.
1773 sincosl NEW: GNU ext.
1774 statfs64 NEW: LFS
1775 statvfs NEW: Unix98
1776 statvfs64 NEW: LFS
1777 strcasestr NEW: GNU ext.
1778 strtoimax NEW: ISO C 9x
1779 strtoumax NEW: ISO C 9x
1780 strverscmp NEW: GNU ext.
1781 svcauthdes_stats NEW: Secure RPC
1782 svcunix_create NEW: sunrpc etx
1783 svcunixfd_create NEW: sunrpc ext
1784 swapcontext NEW: Unix98
1785 tcgetsid NEW: Unix98 PTY
1786 tdestroy NEW: GNU ext.
1787 tgamma NEW: ISO C 9x
1788 tgammaf NEW: ISO C 9x
1789 tgammal NEW: ISO C 9x
1790 tmpfile64 NEW: LFS
1791 trunc NEW: ISO C 9x
1792 truncate64 NEW: LFS
1793 truncf NEW: ISO C 9x
1794 truncl NEW: ISO C 9x
1795 umount2 NEW: kernel
1796 unlockpt NEW: Unix98 PTY
1797 updwtmpx NEW: Unix98
1798 user2netname NEW: Secure RPC
1799 utmpxname NEW: Unix98
1800 versionsort NEW: GNU ext.
1801 versionsort64 NEW: GNU ext.
1802 waitid NEW: Unix98
1803 wcscasecmp NEW: GNU ext.
1804 wcsncasecmp NEW: GNU ext.
1805 wcsnlen NEW: GNU ext.
1806 wcstoimax NEW: ISO C 9x
1807 wcstoll NEW: ISO C 9x
1808 wcstoull NEW: ISO C 9x
1809 wcstoumax NEW: ISO C 9x
1810 wcswcs NEW: Unix98
1811 wordexp NEW: POSIX.2
1812 wordfree NEW: POSIX.2
1813 write_profiling REMOVED
1814 xdecrypt NEW: Secure RPC
1815 xdr_authdes_cred NEW: Secure RPC
1816 xdr_authdes_verf NEW: Secure RPC
1817 xdr_cryptkeyarg NEW: Secure RPC
1818 xdr_cryptkeyarg2 NEW: Secure RPC
1819 xdr_cryptkeyres NEW: Secure RPC
1820 xdr_getcredres NEW: Secure RPC
1821 xdr_key_netstarg NEW: Secure RPC
1822 xdr_key_netstres NEW: Secure RPC
1823 xdr_keybuf NEW: Secure RPC
1824 xdr_keystatus NEW: Secure RPC
1825 xdr_netnamestr NEW: Secure RPC
1826 xdr_sizeof NEW: Secure RPC
1827 xdr_unixcred NEW: sunrpc ext
1828 xencrypt NEW: Secure RPC
1829 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1830 \f
1831 Version 2.0.6
1833 * more bug fixes
1835 \f
1836 Version 2.0.5
1838 * more bug fixes
1840 * inet_ntoa is thread-safe
1842 * updwtmp is moved from libutil to libc
1844 * rewrite of cbrt function
1846 * update of timezone data
1847 \f
1848 Version 2.0.4
1850 * more bug fixes
1851 \f
1852 Version 2.0.3
1854 * more bug fixes
1855 \f
1856 Version 2.0.2
1858 * more bug fixes
1860 * add atoll function
1862 * fix complex problems in Berkeley DB code
1864 * fix math functions
1865 \f
1866 Version 2.0.1
1868 * fixed lots of header problems (especially Linux/GNU specific)
1870 * dynamic loader preserves all registers
1872 * Roland McGrath provided support for handling of auxiliary objects in
1873 the ELF dynamic loader.
1875 * support for parallel builds is improved
1876 \f
1877 Version 2.0
1879 * GNU extensions are no longer declared by default. To enable them you
1880 must define the macro `_GNU_SOURCE' in your program or compile with
1881 `-D_GNU_SOURCE'.
1883 * The library has changed from using GNU ld symbol aliases to using weak
1884 symbols where available. The ELF object file format supports weak
1885 symbols; GNU ld also supports weak symbols in the a.out format. (There
1886 is also now support for other GNU ld extensions in ELF. Use the
1887 `--with-elf' option to configure to indicate you have ELF, and
1888 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1889 of many files which contained only symbol aliases, reducing the size of
1890 the source and the compiled library; many other files were renamed to
1891 less cryptic names previously occupied by the symbol alias files.
1892 There is a new header file <elf.h> for programs which operate on
1893 files in the ELF format.
1895 * Converted to Autoconf version 2, so `configure' has more options.
1896 Run `configure --help' to see the details.
1898 * The library can now be configured to build profiling, highly-optimized
1899 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1900 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1901 `configure' enable building these extra libraries. The shared library is
1902 built by default when using both ELF and GNU ld. When shared libraries
1903 are enabled, the new library `-ldl' is available for arbitrary run-time
1904 loading of shared objects; its interface is defined in <dlfcn.h>. The
1905 new header file <link.h> gives access to the internals of the run-time
1906 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1907 application of same name on other systems and it provides information
1908 about dynamically linked binaries.
1910 * The C library now provides the run-time support code for profiling
1911 executables compiled with `-pg'. Programs can control the profiling code
1912 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1913 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1914 the support for this file format was contributed by David Mosberger-Tang.
1916 * The math code has been replaced with a math library based on fdlibm from
1917 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1918 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1919 functions. The math functions now reside in a separate library, so
1920 programs using them will need to use `-lm' their linking commands.
1922 * John C. Bowman contributed optimized ix87 assembler inline functions.
1924 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1925 mechanism similar to that found in Solaris 2. This is now used for the
1926 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1927 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1928 file controls what services are used for each individual database. This
1929 works by loading shared libraries with names specified in `nsswitch.conf',
1930 so service modules can be changed or added at any time without even
1931 relinking any program. Currently there are the file, db, and NIS based
1932 NSS services available.
1934 * The new functions `strtoq' and `strtouq' parse integer values from
1935 strings, like `strtol' and `strtoul', but they return `long long int' and
1936 `unsigned long long int' values, respectively (64-bit quantities).
1938 * The new functions `strtof' and `strtold' parse floating-point values from
1939 strings, like `strtod', but they return `float' and `long double' values,
1940 respectively (on some machines `double' and `long double' are the same).
1942 * Ulrich Drepper has contributed new implementations of the floating-point
1943 printing and reading code used in the `printf' family of functions and
1944 `strtod', `strtof', and `strtold'. These new functions are perfectly
1945 accurate, and much faster than the old ones.
1947 * The implementation of the POSIX locale model was completely rewritten by
1948 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1949 to compile the POSIX locale definition.
1951 * The former dummy implementations of the strcoll and strxfrm function are
1952 now replaced by fully functional code contributed by Ulrich Drepper. The
1953 collation information comes from the POSIX locale definitions.
1955 * The new header <langinfo.h> defines an interface for accessing
1956 various locale-dependent data (using the locale chosen with `setlocale').
1958 * Ulrich Drepper has contributed a new suite of functions for operation on
1959 wide-character and multibyte-character strings, in <wchar.h>;
1960 and classification and case conversion of wide characters, in <wctype.h>.
1961 These new functions are conforming to the ISO C, Amendement 1 specification.
1963 * There is now a second implementation of the standard I/O library available.
1964 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1965 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1967 * You can now use positional parameter specifications in format strings
1968 for the `printf' and `scanf' families of functions. For example,
1969 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1970 ``Number 6, Mr Jones''. This is mainly useful when providing different
1971 format strings for different languages, whose grammars may dictate
1972 different orderings of the values being printed. To support this
1973 feature, the interface for `register_printf_handler' has changed; see
1974 the header file <printf.h> for details.
1976 * The `printf' and `scanf' families of functions now understand a new
1977 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1978 to group numbers as indicated by the locale; for `scanf' and friends, this
1979 says to accept as valid only a number with all the proper grouping
1980 separators in the right places. In the default "C" locale, numbers are
1981 not grouped; but locales for specific countries will define the usual
1982 conventions (i.e. separate thousands with `,' in the US locale).
1984 * The pgrp functions have been regularized, slightly incompatibly but much
1985 less confusingly. The core functions are now `getpgid' and `setpgid',
1986 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1987 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1988 provided for compatibility. There is no longer an incompatible `getpgrp'
1989 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1991 * The new header file <fts.h> and suite of functions simplify programs that
1992 operate on directory trees. This code comes from 4.4 BSD.
1994 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1995 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1996 NSS scheme used in glibc.
1998 * There is a new malloc debugging hook `__memalign_hook'.
2000 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2001 `unsigned int' in <sys/types.h>. These are for compatibility only and
2002 their use is discouraged.
2004 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2005 done differently, so that it works even without GNU ld.
2007 * New function `euidaccess' checks allowed access to a file like `access',
2008 but using the effective IDs instead of the real IDs.
2010 * The time zone data files have been updated for the latest and greatest
2011 local time conventions of the countries of the world.
2013 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2014 see <dirent.h>.
2016 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2017 for formatting floating-point numbers. They are provided only for
2018 compatibility; new programs should use `sprintf' instead. There are
2019 also equivalent function for the `long double' floating-point type and
2020 all functions also exist in a reentrant form.
2022 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2023 functions for maintaining the login-record files (primarily of use to
2024 system programs such as `login'), and convenient functions for
2025 allocating and initializing a pseudo-terminal (pty) device.
2027 * Ulrich Drepper has contributed new support for System V style
2028 shared memory and IPC on systems that support it.
2030 * Ulrich Drepper has contributed several miscellaneous new functions found
2031 in System V: The `hsearch' family of functions provide an effective
2032 implementation of hash tables; `a64l' and `l64a' provide a very simple
2033 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2034 number generator.
2036 * Ulrich Drepper has contributed new reentrant counterparts for the
2037 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2039 * Ulrich Drepper has contributed new, highly-optimized versions of several
2040 string functions for the i486/Pentium family of processors.
2042 * Ulrich Drepper has updated the Linux-specific code, based largely
2043 on work done in Hongjiu Lu's version of GNU libc for Linux.
2044 The GNU library now supports Linux versions 2.0.10 and later,
2045 using the ELF object file format (i[3456]86-*-linux).
2047 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2049 * David Mosberger-Tang and Richard Henderson have ported the C library
2050 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2051 dynamic linking support for ELF/Alpha.
2053 * Richard Henderson contributed several Alpha optimized assembler function
2054 for arithmetic and string handling.
2056 * Ulrich Drepper has contributed a new set of message catalog functions to
2057 support multiple languages using the <libintl.h> interface, for use with
2058 his new package GNU gettext. Translation volunteers have contributed
2059 catalogs of the library's messages in Spanish, German, and Korean.
2061 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2062 program and the `catgets' function for reading the catalog files it
2063 creates. (The <libintl.h> interface is preferred; we include the
2064 <nl_types.h> interface using `catgets' only for source compatibility with
2065 programs already written to use it.)
2067 * New header file <values.h> gives SVID-compatible names for <limits.h>
2068 constants.
2070 * Various new macros, declarations, and small header files for compatibility
2071 with 4.4 BSD.
2073 * New function `group_member' is a convenient way to check if a process has
2074 a given effective group ID.
2076 * When using GCC 2.7 and later, the socket functions are now declared in a
2077 special way so that passing an argument of type `struct sockaddr_in *',
2078 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2079 `struct sockaddr *' type, does not generate a type-clash warning.
2081 * New function `error' declared in header file <error.h> is a convenient
2082 function for printing error messages and optionally exiting; this is the
2083 canonical function used in GNU programs. The new functions `err', `warn',
2084 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2085 doing the same thing.
2087 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2088 POSIX.2 `glob' function to do ~ and {...} expansion.
2090 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2091 `clearenv' which is used in POSIX.9 is also available.
2093 * New function `getsid' returns session ID number on systems that support it.
2095 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2096 files <db.h> and <mpool.h> provide a rich set of functions for several
2097 types of simple databases stored in memory and in files, and <ndbm.h> is
2098 an old `ndbm'-compatible interface using the `db' functions. Link with
2099 `-ldb' to get these functions.
2101 * New macro `strdupa' copies a string like `strdup', but uses local stack
2102 space from `alloca' instead of dynamic heap space from `malloc'.
2104 * New function `strnlen' is like `strlen' but searches only a given maximum
2105 number of characters for the null terminator. `stpncpy', `strndup' and
2106 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2107 function.
2109 * New function `statfs' in header <sys/statfs.h>.
2111 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2112 provide convenient functions for operating on blocks of null-terminated
2113 strings.
2115 * A new suite of functions in <utmp.h> handle all the details of reading
2116 and writing the utmp file.
2118 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2119 Thorsten Kukuk.
2121 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2122 completely POSIX compliant and also implemented the extended functionality
2123 to handle alternate digit representation and alternate era date formats.
2125 * Ulrich Drepper provided an implementation of the `strptime' function
2126 defined in XPG4.2 which transforms a string into a `struct tm' value.
2128 * Paul Eggert provided the tzselect shell script as part of the timezone
2129 code. The shell script makes it easy to select the correct timezone
2130 specification.
2132 * The implementation of the malloc family of functions is completely replaced
2133 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2134 The implementation uses the mmap function (if available) and it is
2135 optimized for the use in multi threaded programs.
2137 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2138 functions. This new functionality is usable by specifying a special
2139 salt string and it is compatible with implementation on *BSD systems.
2141 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2142 `getsubopt' to handle second level command line options, `bsd_signal'
2143 to access BSD style `signal' functionality, the obsolete `regexp' style
2144 expression matcher.
2146 * the `lchown' function is available on system which support this
2147 functionality.
2149 * The implementation of the shadow password handling function was contributed
2150 by Ulrich Drepper.
2152 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2154 * POSIX.1g support was added. The <sys/select.h> header is available,
2155 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2156 implementation of `getaddrinfo'.
2157 \f
2158 Version 1.09
2160 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2162 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2163 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2165 * The new function `daemon' from 4.4 BSD is useful for server programs that
2166 want to put themselves in the background.
2168 * Joel Sherrill has contributed support for several standalone boards that
2169 run without an operating system.
2171 * `printf', `scanf' and friends now accept a `q' type modifier for long
2172 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2174 * All of the code taken from BSD (notably most of the math and networking
2175 routines) has been updated from the BSD 4.4-Lite release.
2177 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2179 * The new functions `getdomainname' and `setdomainname' fetch or change the
2180 YP/NIS domain name. These are system calls which exist on systems which
2181 have YP (aka NIS).
2183 * The time zone data files have been updated for the latest international
2184 conventions.
2186 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2187 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2188 \f
2189 Version 1.08
2191 * The C library now includes support for Sun RPC, from Sun's free
2192 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2193 are included. (There is still no support for YP.)
2195 * Tom Quinn has contributed a port of the C library to SGI machines running
2196 Irix 4 (mips-sgi-irix4).
2198 * The new `lockf' function is a simplified interface to the locking
2199 facilities of `fcntl', included for compatibility.
2201 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2203 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2205 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2206 compatibility.
2208 * The error message printed by `assert' for a failed assertion now includes
2209 the name of the program (if using GNU ld) and the name of the calling
2210 function (with versions of GCC that support this).
2212 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2214 * The library now includes the <sys/mman.h> header file and memory
2215 management functions `mmap', `munmap', `mprotect', `msync', and
2216 `madvise', on systems that support those facilities.
2218 * The interface for `mcheck' has changed slightly: the function called to
2219 abort the program when an allocation inconsistency is detected now takes
2220 an argument that indicates the type of failure. The new function
2221 `mprobe' lets you request a consistency check for a particular block at
2222 any time (checks are normally done only when you call `free' or `realloc'
2223 on a block).
2225 * It is now possible to easily cross-compile the C library, building on one
2226 system a library to run on another machine and/or operating system. All
2227 you need to do is set the variable `HOST_CC' in `configparms' to the
2228 native compiler for programs to run on the machine you are building on (a
2229 few generator programs are used on Unix systems); set `CC' to the
2230 cross-compiler.
2232 * The new function `fexecve' (only implemented on the GNU system) executes
2233 a program file given a file descriptor already open on the file.
2234 \f
2235 Version 1.07
2237 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2238 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2240 * You can set the variable `libprefix' in `configparms' to specify a prefix
2241 to be prepended to installed library files; this makes it easy to install
2242 the GNU C library to be linked as `-lgnuc' or whatever.
2244 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2245 copies a limited number of characters from a string, and returns the
2246 address of the last character written.
2248 * You no longer need to check for whether the installed `stddef.h' is
2249 compatible with the GNU C library. configure now checks for you.
2251 * You can now define a per-stream `fileno' function to convert the
2252 stream's cookie into an integral file descriptor.
2254 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2255 allocates zero bytes of storage, and returns a unique pointer which
2256 you can pass to `realloc' or `free'. The behavior is undefined if
2257 you dereference this pointer.
2259 * The C library now runs on Sony NEWS m68k machines running either
2260 NewsOS 3 or NewsOS 4.
2262 * The new `syscall' function is a system-dependent primitive function
2263 for invoking system calls. It has the canonical behavior on Unix
2264 systems, including unreliable return values for some calls (such as
2265 `pipe', `fork' and `getppid').
2267 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2268 to `EAGAIN', which is the preferred name. On systems whose kernels
2269 use two distinct codes, the C library now translates EWOULDBLOCK to
2270 EAGAIN in every system call function.
2271 \f
2272 Version 1.06
2274 * The GNU C Library Reference Manual is now distributed with the library.
2275 `make dvi' will produce a DVI file of the printed manual.
2276 `make info' will produce Info files that you can read on line using C-h i
2277 in Emacs or the `info' program.
2278 Please send comments on the manual to bug-glibc-manual@gnu.org.
2280 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2282 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2284 * Jason Merrill has contributed a port to the Sequent Symmetry running
2285 Dynix version 3 (i386-sequent-dynix).
2287 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2288 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2290 * New function `memory_warnings' lets you arrange to get warnings when
2291 malloc is running out of memory to allocate, like Emacs gives you.
2293 * The C library now contains the relocating allocator used in Emacs 19 for
2294 its editing buffers. This allocator (ralloc) minimizes allocation
2295 overhead and fragmentation by moving allocated regions around whenever it
2296 needs to. You always refer to a ralloc'd region with a "handle" (a
2297 pointer to a pointer--an object of type `void **').
2299 * There is a new `printf' format: `%m' gives you the string corresponding
2300 to the error code in `errno'.
2302 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2303 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2304 pass, the `a' modifier says to fill in a `char **' you pass with a
2305 malloc'd string.
2307 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2308 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2309 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2311 * `mkstemp' is a traditional Unix function to atomically create and open a
2312 uniquely-named temporary file.
2313 \f
2314 Version 1.05
2316 * The standard location for the file that says what the local timezone is
2317 has changed again. It is now `/usr/local/etc/localtime' (or more
2318 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2320 * The distribution no longer contains any files with names longer than 14
2321 characters.
2323 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2324 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2326 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2327 \f
2328 Version 1.04
2330 * The configuration process has changed quite a bit. The `configure'
2331 script is now used just like the configuration scripts for other GNU
2332 packages. The `sysdeps' directory hierarchy is much rearranged.
2333 The file `INSTALL' explains the new scheme in detail.
2335 * The header files no longer need to be processed into ANSI C and
2336 traditional C versions. There is just one set of files to install, and
2337 it will work with ANSI or old C compilers (including `gcc -traditional').
2339 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2340 MIPS DECStation running Ultrix 4.
2342 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2343 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2344 made itself into a shared library.
2346 * Yet further improved support for the i386, running 4.3 BSD-like systems
2347 (such as Mach 3 with the Unix single-server), or System V.
2349 * New function `strncasecmp' to do case-insensitive string comparison
2350 with limited length.
2352 * New function `strsep' is a reentrant alternative to `strtok'.
2354 * New functions `scandir' and `alphasort' for searching directories.
2356 * New function `setenv' is a better interface to `putenv'.
2358 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2359 function for traversing a directory tree.
2361 * The GNU obstack package is now also part of the C library.
2362 The new function `open_obstack_stream' creates a stdio stream that
2363 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2364 formatted output directly to an obstack.
2366 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2367 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2369 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2371 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2372 things to your strings.
2374 * There are some new test programs: test-fseek, testmb, and testrand.
2376 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2377 These ports are not finished, but are a good starting place for really
2378 supporting those systems.
2380 * `/etc/localtime' is now the standard location for the file that says what
2381 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2382 This follows the general principle that `/etc' is the place for all local
2383 configuration files.
2385 * The C library header files now use `extern "C"' when used by the C++
2386 compiler, so the C library should now work with C++ code.
2388 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2389 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2390 in <strings.h>.)
2392 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2393 function which uses the `merge sort' algorithm, and is said to be
2394 significantly faster than the old GNU `qsort' function. Merge sort is
2395 now the standard `qsort' function. The new algorithm can require a lot
2396 of temporary storage; so, the old sorting function is called when the
2397 required storage is not available.
2399 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2400 provides the Unix `crypt' function, plus some other entry points.
2402 * The code and header files taken from 4.4 BSD have been updated with the
2403 latest files released from Berkeley.
2404 \f
2405 ----------------------------------------------------------------------
2406 Copyright information:
2408 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2410 Permission is granted to anyone to make or distribute verbatim copies
2411 of this document as received, in any medium, provided that the
2412 copyright notice and this permission notice are preserved,
2413 thus giving the recipient permission to redistribute in turn.
2415 Permission is granted to distribute modified versions
2416 of this document, or of portions of it,
2417 under the above conditions, provided also that they
2418 carry prominent notices stating who last changed them.
2419 \f
2420 Local variables:
2421 version-control: never
2422 fill-column: 76
2423 End: