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1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
7 \f
8 Version 2.20
10 * The following bugs are resolved with this release:
12 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
13 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16198, 16284, 16287,
14 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516, 16532, 16539,
15 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609, 16610, 16611,
16 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642, 16648, 16649,
17 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695, 16701, 16706,
18 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740, 16743, 16754,
19 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796, 16799, 16800,
20 16815, 16823, 16824, 16831, 16838, 16849, 16854, 16876, 16877, 16878,
21 16882, 16885, 16888, 16890, 16912, 16915, 16916, 16917, 16918, 16922,
22 16927, 16928, 16932, 16943, 16958, 16965, 16966, 16967, 16977, 16978,
23 16984, 16990, 16996, 17009, 17022, 17031, 17042, 17048, 17050, 17058,
24 17061, 17062, 17069, 17075, 17079, 17084, 17086, 17092, 17097.
26 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
28 * The minimum Linux kernel version that this version of the GNU C Library
29 can be used with is 2.6.32.
31 * Running the testsuite no longer terminates as soon as a test fails.
32 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
33 with PASS or FAIL lines for individual tests. A summary of the results is
34 printed, including a list of failing lists, and "make check" exits with
35 error status if there were any unexpected failures. "make check
36 stop-on-test-failure=y" may be used to keep the old behavior.
38 * The am33 port, which had not worked for several years, has been removed
39 from ports.
41 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
42 supported; they now act the same as _DEFAULT_SOURCE (but generate a
43 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
44 conflicted with POSIX (support for which was removed in 2.19), the
45 interfaces those macros enabled remain available when compiling with
46 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
47 test macros defined.
49 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
51 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
52 This may improve lock scaling of existing programs on TX capable systems.
53 The lock elision code is only built with --enable-lock-elision=yes and
54 then requires a GCC version supporting the TX builtins. With lock elision
55 default mutexes are elided via __builtin_tbegin, if the cpu supports
56 transactions. By default lock elision is not enabled and the elision code
57 is not built.
59 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
60 copy the path argument. This allowed programs to cause posix_spawn to
61 deference a dangling pointer, or use an unexpected pathname argument if
62 the string was modified after the posix_spawn_file_actions_addopen
63 invocation.
65 * All supported architectures now use the main glibc sysdeps directory
66 instead of some being in a separate "ports" directory (which was
67 distributed separately before glibc 2.17).
68 \f
69 Version 2.19
71 * The following bugs are resolved with this release:
73 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
74 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
75 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
76 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
77 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
78 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
79 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
80 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
81 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
82 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
83 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
84 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
85 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
86 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
87 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
88 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
89 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
90 16431, 16453, 16474, 16506, 16510, 16529
92 * Slovenian translations for glibc messages have been contributed by the
93 Translation Project's Slovenian team of translators.
95 * The public headers no longer use __unused nor __block. This change is to
96 support compiling programs that are derived from BSD sources and use
97 __unused internally, and to support compiling with Clang's -fblock
98 extension which uses __block.
100 * CVE-2012-4412 The strcoll implementation caches indices and rules for
101 large collation sequences to optimize multiple passes. This cache
102 computation may overflow for large collation sequences and may cause a
103 stack or buffer overflow. This is now fixed to use a slower algorithm
104 which does not use a cache if there is an integer overflow.
106 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
107 rules for large collation sequences to optimize multiple passes and falls
108 back to alloca if malloc fails, resulting in a possible stack overflow.
109 The implementation now falls back to an uncached collation sequence lookup
110 if malloc fails.
112 * CVE-2013-4788 The pointer guard used for pointer mangling was not
113 initialized for static applications resulting in the security feature
114 being disabled. The pointer guard is now correctly initialized to a
115 random value for static applications. Existing static applications need
116 to be recompiled to take advantage of the fix (bug 15754).
118 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
119 to the d_name member of struct dirent, or omit the terminating NUL
120 character. (Bugzilla #14699).
122 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
123 aligned_alloc functions could allocate too few bytes or corrupt the
124 heap when passed very large allocation size values (Bugzilla #15855,
125 #15856, #15857).
127 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
128 for AF_INET6 has been fixed (Bugzilla #16072).
130 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
131 pap_CW, quz_PE, the_NP.
133 * Substantially revised locales: gd_GB, ht_HT
135 * The LC_ADDRESS field was updated to support country_car for almost all
136 supported locales.
138 * ISO 1427 definitions were updated.
140 * ISO 3166 definitions were updated.
142 * The localedef utility now supports --big-endian and --little-endian
143 command-line options to generate locales for a different system from that
144 for which the C library was built.
146 * Binary locale files now only depend on the endianness of the system for
147 which they are generated and not on other properties of that system. As a
148 consequence, binary files generated with new localedef may be incompatible
149 with old versions of the GNU C Library, and binary files generated with
150 old localedef may be incompatible with this version of the GNU C Library,
151 in the following circumstances:
153 + Locale files may be incompatible on m68k systems.
155 + Locale archive files (but not separate files for individual locales) may
156 be incompatible on systems where plain "char" is signed.
158 * The configure option --disable-versioning has been removed. Builds with
159 --disable-versioning had not worked for several years.
161 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
162 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
164 * SystemTap probes for malloc have been introduced.
166 * SystemTap probes for slow multiple precision fallback paths of
167 transcendental functions have been introduced.
169 * Support for powerpc64le has been added.
171 * The soft-float powerpc port now supports e500 processors.
173 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
175 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
176 set of header declarations that are enabled by default, even when other
177 feature test macros or compiler options such as -std=c99 would otherwise
178 disable some of those declarations.
180 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
181 conflict with POSIX. The libbsd-compat library (which was a dummy library
182 that did nothing) has also been removed.
184 * Preliminary documentation about Multi-Thread, Async-Signal and
185 Async-Cancel Safety has been added.
187 * Change of ABI data structures for s390 and s390x:
188 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
189 allow for future hardware extensions. All library functions that accept or
190 return these structures were versioned in order to provide backwards
191 compatibility with existing code. However, not all cases can be handled
192 with interface versioning. If an application embeds either structure into
193 another structure and that structure is passed to another compilation unit
194 which expects the newer larger-sized object then any access to the new
195 fields will result in undefined behaviour. Similarly any access to fields
196 that were moved by the enlarging of the structures will cause undefined
197 behaviour. To fix the undefined behaviour all objects that are part of the
198 final in-memory image must agree on the size of structures, and this may
199 require recompilation.
200 \f
201 Version 2.18
203 * The following bugs are resolved with this release:
205 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
206 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
207 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
208 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
209 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
210 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
211 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
212 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
213 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
214 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
215 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
216 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
217 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
218 15759.
220 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
221 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
222 Distributions can re-enable building and using pt_chown via the new configure
223 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
224 considerable security risks and should only be used if the distribution
225 understands and accepts the risks.
227 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
228 #15078).
230 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
231 fixed (Bugzilla #15330).
233 * Add support for calling C++11 thread_local object destructors on thread
234 and program exit. This needs compiler support for offloading C++11
235 destructor calls to glibc.
237 * Improved worst case performance of libm functions with double inputs and
238 output.
240 * Support for priority inherited mutexes in pthread condition variables on
241 non-x86 architectures.
243 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
245 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
247 * Optimized string functions for ARM. Implemented by Will Newton and
248 Richard Henderson.
250 * Optimized libm functions for SPARC. Implemented by David S. Miller.
252 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
253 Richard Henderson.
255 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
256 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
258 * Added a benchmark framework to track performance of functions in glibc.
260 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
261 It is based on draft TS 18661 and currently enabled as a GNU extension.
263 * On Linux, the clock function now uses the clock_gettime system call
264 for improved precision, rather than old times system call.
266 * Added support for version-3 tz format files. This is needed when using
267 the tz database release 2013e or later, and affects a few unusual cases --
268 currently only TZ='America/Godthab' for time stamps after 2037.
270 * Added new API functions pthread_getattr_default_np and
271 pthread_setattr_default_np to get and set the default pthread
272 attributes of a process.
274 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
275 This may improve lock scaling of existing programs on TSX capable systems.
276 When the --enable-lock-elision=yes parameter is specified at configure
277 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
278 mutexes.
280 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
281 availability). Implemented by Ryan S. Arnold.
283 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
284 \f
285 Version 2.17
287 * The following bugs are resolved with this release:
289 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
290 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
291 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
292 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
293 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
294 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
295 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
296 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
297 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
298 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
299 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
300 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
301 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
302 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
303 14879, 14889, 14893, 14898, 14914.
305 * Optimization of memcpy for MIPS.
307 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
308 EMFILE has been fixed (Bugzilla #14889).
310 * The add-on ports collection is now distributed in the "ports" subdirectory
311 of the main GNU C Library distribution, rather than separately.
313 * Port to ARM AArch64 contributed by Linaro.
315 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
316 Optimized versions of memcpy, memset, and memcmp added for System z10 and
317 zEnterprise z196.
318 Implemented by Andreas Krebbel.
320 * The new function secure_getenv allows secure access to the environment,
321 returning NULL if running in a SUID/SGID process. This function replaces
322 the internal function __secure_getenv.
324 * SystemTap static probes have been added into the dynamic linker.
325 Implemented by Gary Benson.
327 * Optimizations of string functions strstr, strcasestr and memmem.
328 Implemented by Maxim Kuvyrkov.
330 * The minimum Linux kernel version that this version of the GNU C Library
331 can be used with is 2.6.16.
333 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
334 powerpc POWER7. Implemented by Will Schmidt.
336 * New configure option --disable-nscd builds the C library such that it
337 never attempts to contact the Name Service Caching Daemon (nscd).
338 New configure option --disable-build-nscd avoids building nscd itself;
339 this is the default if --disable-nscd is used.
341 * Improved support for cross-compilation, including cross-testing and
342 bootstrap builds without a previously built glibc.
344 * Several testsuite tests are now able to test multiple IFUNC variants of an
345 interface, rather than just testing the one that would be chooen by
346 default.
348 * New configure options --with-bugurl and --with-pkgversion, for
349 distributors to use to embed their bug-reporting and package version
350 information in --help and --version output.
352 * The ttyname and ttyname_r functions on Linux now fall back to searching for
353 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
354 allows creation of chroots without the procfs mounted on /proc.
356 * The `crypt' function now fails if passed salt bytes that violate the
357 specification for those values. On Linux, the `crypt' function will
358 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
359 enabled, and fail on encrypted strings using the MD5 or DES algorithm
360 when the mode is enabled.
362 * The `clock_*' suite of functions (declared in <time.h>) is now available
363 directly in the main C library. Previously it was necessary to link with
364 -lrt to use these functions. This change has the effect that a
365 single-threaded program that uses a function such as `clock_gettime' (and
366 is not linked with -lrt) will no longer implicitly load the pthreads
367 library at runtime and so will not suffer the overheads associated with
368 multi-thread support in other code such as the C++ runtime library.
370 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
371 sat_IN, and szl_PL.
372 \f
373 Version 2.16
375 * The following bugs are resolved with this release:
377 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
378 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
379 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
380 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
381 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
382 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
383 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
384 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
385 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
386 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
387 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
388 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
389 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
390 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
391 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
392 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
393 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
394 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
395 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
396 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
397 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
398 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
399 14277, 14278.
401 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
402 configuring glibc with:
403 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
404 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
405 Implemented by H.J. Lu.
407 * ISO C11 support:
409 + define static_assert
411 + do not declare gets
413 + declare at_quick_exit and quick_exit also for ISO C11
415 + aligned_alloc. NB: The code is deliberately allows the size parameter
416 to not be a multiple of the alignment. This is a moronic requirement
417 in the standard but it is only a requirement on the caller, not the
418 implementation.
420 + timespec_get added
422 + uchar.h support added
424 + CMPLX, CMPLXF, CMPLXL added
426 Implemented by Ulrich Drepper.
428 * Support for the IA-64 has been moved to ports.
430 * Remove support for anything but ELF binary format
432 * Checking versions of poll, ppoll added.
433 Implemented by Ulrich Drepper.
435 * More generic and 64-bit performance optimizations to math functions.
436 Implemented by Ulrich Drepper.
438 * New configure option --enable-obsolete-rpc makes the deprecated RPC
439 headers and functions available at compile time as they were before
440 version 2.14. This option will be removed at some time in the future
441 after the TI-RPC library becomes fully sufficient for the needs of
442 existing applications.
444 * Compatibility code for Linux kernel versions before 2.4 has been removed.
445 Note that glibc is not expected to work with any Linux kernel version
446 before 2.6.
448 * New header <sys/auxv.h> and function getauxval allowing easy access to
449 the AT_* key-value pairs passed from the Linux kernel. The header also
450 defines the HWCAP_* bits associated with the AT_HWCAP key.
452 * New locales: mag_IN
454 * New configure option --enable-systemtap builds SystemTap static probes
455 into libc for setjmp and longjmp and into libpthread for various operations.
456 So far the setjmp/longjmp probes and some of the libpthread probes are
457 provided only for i*86 and x86_64.
458 Implemented by Roland McGrath and Rayson Ho.
460 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
462 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
463 and Will Schmidt.
465 * More optimized functions for SPARC. Implemented by David S. Miller.
467 * Improved support for cross-compilation, especially bootstrap builds
468 without a previously built glibc.
470 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
471 Chris Metcalf from Tilera.
473 * Support for the old ARM ABI has been removed from ports. Only the EABI is
474 now supported for ARM processors.
476 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
477 as the name of the dynamic linker, to distinguish it from the
478 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
480 * Support for CRIS has been removed from ports.
482 * A new class of installed header has been documented for low-level
483 platform-specific functionality. PowerPC added the first instance with a
484 function to provide time base register access. Contributed by Tulio
485 Magno Quites Machado Filho.
487 * ix86 configurations now install header files that are consistent with
488 what x86-64 configurations install. These same header files can be used
489 for -m32, -m64, or -mx32 builds.
490 Contributed by H.J. Lu.
492 * Math library bug fixes. A thorough audit of all open math library bugs was
493 conducted by Joseph Myers. Significant progress was made on many math
494 library bugs resulting in more accurate exceptions and function results.
495 Many thanks to all those that contributed including Andreas Jaeger for his
496 patch review and work on the x87 trigonometric instruction issues.
498 * Timezone data is no longer installed. Timezone-related binaries and scripts
499 will continue to be installed. Users should obtain their timezone data from
500 their distribution provider or from the tzdata package at
501 <ftp://munnari.oz.au/pub/>.
502 \f
503 Version 2.15
505 * The following bugs are resolved with this release:
507 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
508 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
509 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
510 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
511 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
512 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
513 13484, 13506, 13515, 13523, 13524, 13538, 13540
515 * New program pldd to list loaded object of a process
516 Implemented by Ulrich Drepper.
518 * Add nss_db support back to glibc. No more dependency on Berkeley db
519 and support for initgroups lookups.
520 Implemented by Ulrich Drepper.
522 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
523 Contributed by HJ Lu.
525 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
526 Contributed by HJ Lu.
528 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
529 on x86-32 and x86-64.
530 Contributed by Liubov Dmitrieva.
532 * Optimized strchr and strrchr for SSE on x86-32.
533 Contributed by Liubov Dmitrieva.
535 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
536 for x86-64 and x86-32.
537 Contributed by Liubov Dmitrieva.
539 * New interfaces: scandirat, scandirat64
540 Implemented by Ulrich Drepper.
542 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
543 Implemented by Ulrich Drepper.
545 * nscd now also caches the netgroup database.
546 Implemented by Ulrich Drepper.
548 * Integrate libm with gcc's -ffinite-math-only option.
549 Implemented by Ulrich Drepper.
551 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
552 to math functions. Implemented by Ulrich Drepper.
554 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
555 Implemented by Ulrich Drepper.
557 * New Linux interfaces: process_vm_readv, process_vm_writev
559 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
560 Implemented by Ulrich Drepper.
562 * Optimized nearbyint and strcasecmp for PPC.
563 Implemented by Adhemerval Zanella.
565 * New locales: bho_IN, unm_US, es_CU, ta_LK
566 \f
567 Version 2.14
569 * The following bugs are resolved with this release:
571 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
572 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
573 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
574 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
575 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
576 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
577 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
578 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
579 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
580 12795, 12811, 12813, 12814, 12841
582 * The RPC implementation in libc is obsoleted. Old programs keep working
583 but new programs cannot be linked with the routines in libc anymore.
584 Programs in need of RPC functionality must be linked against TI-RPC.
585 The TI-RPC implementation is IPv6 enabled and there are other benefits.
587 Visible changes of this change include (obviously) the inability to link
588 programs using RPC functions without referencing the TI-RPC library and the
589 removal of the RPC headers from the glibc headers.
590 Implemented by Ulrich Drepper.
592 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
593 syncfs, setns, sendmmsg
595 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
596 yue_HK, lij_IT, mhr_RU
598 * New encodings: CP770, CP771, CP772, CP773, CP774
600 * New program sotruss to trace calls through PLTs
601 Implemented by Ulrich Drepper.
603 * The malloc hook implementation is marked deprecated and will be removed
604 from the default implementation in the next version. The design never
605 worked ever since the introduction of threads. Even programs which do
606 not create threads themselves can use multiple threads created internally.
607 \f
608 Version 2.13
610 * The following bugs are resolved with this release:
612 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
613 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
614 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
615 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
616 12378, 12394, 12397
618 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
620 * POWER7 optimizations: memset, memcmp, strncmp
622 * New optimized string functions for x86-64: strnlen (SSE2),
623 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
624 Implemented by Ulrich Drepper.
625 \f
626 Version 2.12
628 * The following bugs are resolved with this release:
630 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
631 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
632 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
633 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
634 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
635 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
636 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
637 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
639 * New interfaces: pthread_getname_np, pthread_setname_np
641 * New Linux interface: recvmmsg
643 * STT_GNU_IFUNC implemented for Sparc by David Miller.
645 * The dynamic linker now recognizes supported ABI versions from the
646 EI_ABIVERSION field in the ELF header.
647 Implemented by Ulrich Drepper.
649 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
650 will not be used to fill in password fields in the passwd.byname replies.
651 Instead it is used to synthesize the shadow.byname table, should it be
652 missing. This is a useful mode in some installations involving Solaris.
653 Implemented by Ulrich Drepper.
655 * New locales: kok_IN, sq_MK, cv_RU
656 \f
657 Version 2.11
659 * The following bugs are resolved with this release:
661 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
662 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
663 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
664 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
665 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
666 10789, 10817, 10823, 10840, 10847
668 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
669 mkostemps64
670 Implemented by Ulrich Drepper.
672 * Checking version of longjmp added that fails if an uninitialized stack
673 frame would be created. Implemented by Ulrich Drepper.
675 * STT_GNU_IFUNC is now supported in static executables.
676 Implemented by H.J. Lu.
678 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
680 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
681 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
682 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
683 Contributed by H.J. Lu.
685 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
686 Implemented by Ulrich Drepper.
688 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
689 strstr, strcasestr.
690 Contributed by H.J. Lu.
692 * Support for fma instruction in AVX on x86-64.
693 Implemented by H.J. Lu and Ulrich Drepper.
695 * AVX support in x86-64 auditing support in ld.so.
696 Implemented by H.J. Lu.
698 * STB_GNU_UNIQUE support added.
699 Implemented by Ulrich Drepper.
701 * Implement second fallback mode for optimized DNS lookup for even more
702 broken environments. If two requests from the same port are not
703 handled correctly close the socket and open a new one before sending
704 the second request. The 'single-request-reopen' option in /etc/resolv.conf
705 can be used to select this mode right away, instead of rediscovering the
706 necessity is every process again.
707 Implemented by Ulrich Drepper.
709 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
710 Implemented by Adam Tkac.
712 * Optimized iconv conversions for S390x.
713 Implemented by Andreas Krebbel.
715 * Using condvars with PI mutexes is now more efficient due to kernel
716 support for requeueing to PI futexes. NPTL support added for x86-64.
717 Implemented by Ulrich Drepper.
719 * New locales: ps_AF, my_MM
720 \f
721 Version 2.10
723 * The following bugs are resolved with this release:
725 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
726 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
727 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
728 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
729 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
731 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
732 Implemented by Ulrich Drepper.
734 * New Linux interfaces: accept4, fallocate, fallocate64.
735 Implemented by Ulrich Drepper.
737 * Correct declarations of string function when used in C++ code. This
738 could lead to compile errors for invalid C++ code.
740 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
741 now in POSIX.
743 * New POSIX 2008 interface: psiginfo
744 Implemented by Ulrich Drepper.
746 * New ISO C++1x interfaces: quick_exit, at_quick_exit
747 Implemented by Ulrich Drepper.
749 * Support for selecting between multiple function definitions at runtime
750 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
752 * The libcrypt library can now use the hash function implementations in
753 NSS. Implemented by Ulrich Drepper.
755 * The malloc implementation can be compiled to be less memory efficient
756 but higher performing in multi-threaded programs.
757 Implemented by Ulrich Drepper.
759 * New locales: nan_TW@latin, ks_IN
761 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
762 Implemented by Ulrich Drepper.
764 * Extended printf hook support. It is possible to use user-defined types
765 and extend existing format specifiers.
766 Implemented by Ulrich Drepper.
768 * Handling for group shadow files has been added.
769 Implemented by Ulrich Drepper.
771 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
772 servers (the case, e.g., for some people using the built-in DNS
773 server in ADSL modems/routers). There is a once-per-process timeout
774 in case of a broken server. To avoid it, users can run nscd or put
775 'options single-request' in /etc/resolv.conf.
776 Implemented by Ulrich Drepper.
777 \f
778 Version 2.9
780 * The following bugs are resolved with this release:
782 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
783 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
784 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
785 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
786 6968, 6974, 6980, 6995, 7008, 7009, 7029
788 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
789 up at the same time. Implemented by Ulrich Drepper.
791 * TLS descriptors for LD and GD on x86 and x86-64.
792 Implemented by Alexandre Oliva.
794 * getaddrinfo now handles DCCP and UDPlite.
795 Implemented by Ulrich Drepper.
797 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
798 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
799 Implemented by Ulrich Drepper.
801 * New implementation of memmem, strstr, and strcasestr which is O(n).
802 Implemented by Eric Blake.
804 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
806 * Implement "e" option for popen to open file descriptor with the
807 close-on-exec flag set. Implemented by Ulrich Drepper.
809 * Implement "b" mode for fmemopen. In this mode writes writes don't
810 implicitly add a NUL byte and seeks from the end of the buffer really
811 use the buffer end, not the string length as the basis.
812 Implemented by Ulrich Drepper.
814 * Many functions, exported and internal, now atomically set the close-on-exec
815 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
817 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
818 Sinhala)
819 Implemented by Pravin Satpute.
821 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
822 \f
823 Version 2.8
825 * The following bugs are resolved with this release:
827 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
828 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
829 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
830 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
831 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
832 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
833 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
835 * New locales: bo_CN, bo_IN, shs_CA.
837 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
839 * Sorting rules for some Indian languages (Devanagari and Gujarati).
840 Implemented by Pravin Satpute.
842 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
844 * nscd caches now all timeouts for DNS entries
845 Implemented by Ulrich Drepper.
847 * nscd is more efficient and wakes up less often.
848 Implemented by Ulrich Drepper.
850 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
851 vdprintf, and obstack_vprintf.
852 Implemented by Jakub Jelinek.
854 * Faster memset for x86-64.
855 Implemented by Harsha Jagasia and H.J. Lu.
857 * Faster memcpy on x86.
858 Implemented by Ulrich Drepper.
860 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
861 Implemented by Ulrich Drepper.
863 * Faster sqrt and sqrtf implemention for some PPC variants.
864 Implemented by Steven Munroe.
865 \f
866 Version 2.7
868 * The following bugs are resolved with this release:
870 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
871 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
872 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
873 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
874 5071, 5103, 5104, 5112, 5113, 5184, 5186
876 * More checking functions: fread, fread_unlocked, open*, mq_open.
877 Implemented by Jakub Jelinek and Ulrich Drepper.
879 * Extend fortification to C++. Implemented by Jakub Jelinek.
881 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
882 by not recognizing 'a' as a modifier when those specs are requested.
883 Implemented by Jakub Jelinek.
885 * PPC optimizations to math and string functions.
886 Implemented by Steven Munroe.
888 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
889 options to be passed. Implemented by Ulrich Drepper.
891 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
893 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
894 Implemented by Ulrich Drepper.
896 * Handle private futexes in the NPTL implementation.
897 Implemented by Jakub Jelinek and Ulrich Drepper.
899 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
900 Implemented by Roland McGrath and Ulrich Drepper.
902 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
904 * SHA-256 and SHA-512 based password encryption.
905 Implemented by Ulrich Drepper.
907 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
908 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
909 yo_NG.
911 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
912 Implemented by Ulrich Drepper.
913 \f
914 Version 2.6
916 * The following bugs are resolved with this release:
918 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
919 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
920 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
921 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
922 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
923 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
924 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
925 4702, 4858
927 * New Linux interfaces: epoll_pwait, sched_getcpu.
929 * New generic interfaces: strerror_l.
931 * nscd can now cache the services database. Implemented by Ulrich Drepper.
932 \f
933 Version 2.5
935 * The following bugs are resolved with this release:
937 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
938 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
939 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
940 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
941 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
942 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
943 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
944 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
945 3225, 3251, 3252, 3253, 3273
947 * For Linux, the sorting of addresses returned by getaddrinfo now also
948 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
949 Implemented by Ulrich Drepper.
951 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
952 Implemented by Ulrich Drepper.
954 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
956 * New iconv module for MIK. Contributed by Alexander Shopov.
958 * For sites with broken group and/or passwd database, the auto-propagate
959 option of nscd can prevent creating ID lookup entries from the results
960 of a name lookup and vice versa. This usually is no problem but some
961 site might have problems with the default behavior.
962 Implemented by Ulrich Drepper.
964 * Iterating over entire database in NIS can be slow. With the
965 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
966 to trade time for memory. The entire database will be read at once.
967 Implemented by Ulrich Drepper.
969 * The interfaces introduced in RFC 3542 have been implemented by
970 Ulrich Drepper.
972 * Support for the new ELF hash table format was added by Ulrich Drepper.
974 * Support for priority inheritance mutexes added by Jakub Jelinek and
975 Ulrich Drepper.
977 * Support for priority protected mutexes added by Jakub Jelinek.
979 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
980 or_IN, csb_PL, fy_NL, sr_ME.
981 \f
982 Version 2.4
984 * More overflow detection functions.
986 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
987 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
989 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
990 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
991 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
992 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
993 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
994 by Masahide Washizawa.
996 * It is now possible to install audit libraries for the dynamic linker using
997 LD_AUDIT. Implemented by Ulrich Drepper.
999 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1000 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1001 For a libc and libpthread that works well on Linux 2.4 kernels, we
1002 recommend using the stable 2.3 branch.
1004 * The new function open_wmemstream acts like open_memstream,
1005 but uses a wchar_t wide character buffer.
1007 * The new function ppoll is an improved version of poll, similar to pselect.
1009 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1010 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1011 renameat, unlinkat, linkat, symlinkat, readlinkat.
1013 * New Linux kernel system calls: unshare,
1014 inotify_init, inotify_add_watch, inotify_rm_watch.
1016 * The euidaccess function is now also known by the alias eaccess,
1017 for compatibility with some other systems.
1019 * Timezone data updated to 2006b version.
1020 \f
1021 Version 2.3.6
1023 * The following bugs are resolved with this release:
1025 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1026 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1027 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1028 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1029 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1030 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1032 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1034 * As of this release, GCC 4 can be used to compile the C Library.
1036 * Timezone data updated to 2005m version.
1037 \f
1038 Version 2.3.5
1040 * The following bugs are resolved with this release:
1042 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1043 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1044 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1045 777, 787, 821, 822, 823, 825
1047 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1048 \f
1049 Version 2.3.4
1051 * Support for RFC 3678. Real implementations exist only for Linux so far.
1052 Implemented by Ulrich Drepper.
1054 * nscd can now cache entries persistently. Expiring entries are reloaded.
1055 For speedups the cache can be shared in memory with client processes.
1056 Implemented by Ulrich Drepper.
1058 * nscd can now perform SELinux checks.
1059 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1061 * getaddrinfo queries are now cached. Canonical name lookup is performed
1062 efficiently.
1063 Implemented by Ulrich Drepper.
1065 * The nothrow function attribute is used when headers are used by gcc when
1066 compiling C code. This can avoid significant amounts of exception
1067 handling data.
1069 * The malloc functions perform more error checking and are stricter when
1070 it comes to reacting on errors. The default action is to terminate
1071 the process after showing an error message. Implemented by Ulrich Drepper.
1073 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1074 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1076 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1077 namespaces using the new function dlmopen(). This feature is of course,
1078 like most other dynamic loading functionality, not available in statically
1079 linked applications. Implemented by Ulrich Drepper.
1081 * Low-overhead boundary checking variants of string and some stdio functions
1082 were added. These are to be used in conjunction with a gcc patch by
1083 Jakub Jelinek which adds calls to these functions if possible.
1084 Implemented by Jakub Jelinek and Ulrich Drepper.
1086 * Old code for several operating systems and machine architectures that
1087 have not been in working condition in a long time have been removed from
1088 the main source tree maintained by the GNU C Library's maintainers.
1089 These files are now reside in the separate `ports' source module
1090 that is usable as an add-on when building the library.
1091 \f
1092 Version 2.3.3
1094 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1095 interrogate the dynamic linker, compatible with the Solaris interface.
1097 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1098 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1100 * getifaddrs now uses the netlink interface on Linux to get its information.
1101 Implemented by Thorsten Kukuk.
1103 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1104 Implemented by Ulrich Drepper.
1106 * support for non-executable stacks on x86 has been added. Changes mostly
1107 by Roland McGrath.
1109 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1110 and Ulrich Drepper.
1112 * getaddrinfo now performs destination address selection according to
1113 RFC 3484.
1114 \f
1115 Version 2.3.2
1117 * Thread-safe interfaces for many functions that access locale data
1118 were added in version 2.3, but these features were omitted from NEWS.
1119 Many functions have variants with an `_l' suffix that take a `locale_t'
1120 object as a parameter rather than consulting the current locale.
1121 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1122 create and maintain `locale_t' objects. Additionally, the new function
1123 `uselocale' sets "the current locale" (as used by functions not so
1124 parameterized) set for an individual thread. These features were added
1125 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1127 * The functions getresuid, getresgid, setresuid, and setresgid, which
1128 have long been available on Linux, are now declared in <unistd.h>
1129 and are now also available on the Hurd.
1131 * ELF thread-local storage support (TLS) now works on x86-64.
1133 * The new dynamic string token $LIB is expanded in shared library names.
1134 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1136 * Aldy Hernandez contributed complete software floating point support for
1137 PowerPC machines with no FPU.
1139 * fexecve is implemented on Linux.
1141 * The `btowc' function should work at least twice as fast due to
1142 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1144 * With approriate thread add-ons cancelable functions are now implemented
1145 in libc.so as well. No need to call the function in libpthread. This
1146 change allowed to finally disable the incorrect and expensive handling
1147 of weak definition in ld.so.
1149 * Yet more PLT entries in libc.so have been removed. We finally arrived
1150 at the bare minimum. Startup times improved appropriately.
1152 * Support for the new Linux/x86 system call interface was added. The
1153 AT_SYSINFO auxiliary vector entry is recognized and handled.
1154 \f
1155 Version 2.3
1157 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1158 charsets.
1160 * iconv (the program and the interface) now accepts empty names (excluding
1161 options like //TRANSLIT) to mean "use charset of current locale".
1163 * localedef can now transliterate characters in strings which are not in
1164 the provided charmap. The information from the input locale is used.
1166 * Prelinking support was added for ELF targets. This requires additional
1167 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1169 * Read-only stdio streams now use mmap to speed up operation by eliminating
1170 copying and buffer underflows. To use add 'm' to the mode string of
1171 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1173 * The malloc functions were completely rewritten by Wolfram Gloger based
1174 on Doug Lea's malloc-2.7.0.c.
1176 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1177 implementation of regex.
1179 * Bruno Haible upgraded the iconv and locale implementation to support
1180 Unicode 3.2.
1182 * Contents of the LC_* and LANG environment variables in the CEN style are
1183 not recognized anymore. It never was used. Change by Ulrich Drepper.
1185 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1186 thread-local storage (TLS) ABI on some platforms.
1187 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1189 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1190 EUC-JISX0213, and TSCII.
1192 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1193 BSD-compatible interface for getting all network interface addresses.
1194 Implementation for IPv4 by Roland McGrath.
1196 * Loading of locale data is faster due to the introduction of a locale
1197 archive. Implemented by Roland McGrath and Ulrich Drepper.
1199 * Startup times are significantly reduced by not using exported functions
1200 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1201 and Ulrich Drepper.
1203 * Steven Munroe contributed a port to PowerPC64/Linux.
1204 \f
1205 Version 2.2.6
1207 * The Hurd now uses the GNU libio implementation of stdio rather than the
1208 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1210 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1211 with the same behavior as the Linux system call of the same name.
1212 \f
1213 Version 2.2.5
1215 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1216 128-bit long double format.
1218 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1219 IBM1161, and IBM1162 charsets.
1221 * Andreas Jaeger contributed a port to x86-64/Linux.
1223 * Peter Bruin contributed a port to PowerPC/Hurd.
1225 * libc functions using I/O streams now can handle wide-oriented streams
1226 as well.
1228 * optimizations in the dynamic linker. Binaries created by recent binutils
1229 versions start up quicker due to reduced time spent on relocations.
1231 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1232 \f
1233 Version 2.2.4
1235 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1236 asinh, atanh, j0 for the 128-bit long double format.
1238 * Bruno Haible updated all the code handling Unicode in some form to
1239 support Unicode 3.1.
1241 * Speed of regex for single-byte locales is back to previous levels.
1242 Patch by Isamu Hasegawa.
1244 * Alpha, SPARC, and IA-64 now also using floating stacks.
1246 * Startup time of internationalized applications greatly improved through
1247 iconv cache. Use iconvconfig to generate the cache file.
1248 Contributed by Ulrich Drepper.
1250 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1251 severe performance problems. Patch by David Mosberger.
1253 * The Hurd port got a lot more functionality like AIO, various stdio
1254 extensions, etc. Mainly done by Roland McGrath.
1256 * mtrace can now lookup symbols in shared libraries.
1257 \f
1258 Version 2.2.3
1260 * Intel's IA-64 math library is largely integrated. It provides fast and
1261 accurate implementatations for most basic and standard math functions
1262 in float, double, and long double format.
1264 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1265 and asin for the 96-bit long double format and asin, log, tan for the
1266 128-bit long double format.
1268 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1269 The basic double functions exist today. Contributed by Abraham Ziv
1270 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1271 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1273 * An asynchronous name lookup library was added. The interface is designed
1274 after POSIX AIO. The proposal was circulated beforehand to get comments.
1275 No negative ones came in. Implemented by Ulrich Drepper.
1277 * Port to S390/64bit contributed by Martin Schwidefsky
1278 <schwidefsky@de.ibm.com>.
1280 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1281 of functions for Linux/IA-64.
1283 * The RPC code is now thread safe. Threads can now use the same service
1284 of different services at the same time. Patch by Eric Norum
1285 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1287 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1288 family of functions for Linux/S390.
1290 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1291 of functions for Linux/x86.
1293 * Port to Linux/CRIS contributed by Axis Communications.
1294 \f
1295 Version 2.2.2
1297 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1298 we can now check for namespace violations and missing declarations. The
1299 result is that almost all headers are now Unix-compliant (as defined in
1300 the upcoming XPG6). The negative side is that some programs might need
1301 corrections, too, if they depend on the incorrect form of the headers in
1302 previous versions which defined too many symbols and included too many
1303 other headers.
1305 * regex now handles multibyte character sets correctly.
1306 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1308 * iconv (the program) does now conform to the upcoming XPG6 and handles
1309 charmaps. Instead of the charset names the path of charmaps can be
1310 provided and the conversion happens based on this data.
1311 Contributed by Ulrich Drepper.
1313 * The locale program now provides detailed information about the installed
1314 locales. While
1316 locale -a
1318 only lists the names of the supported locales
1320 locale -a --verbose
1322 provides details such as country, language, and codeset name.
1323 Contributed by Ulrich Drepper.
1324 \f
1325 Version 2.2.1
1327 * The gencat program now parses the input file according to the charset
1328 selected by the LC_CTYPE category. This is important for stateful
1329 character sets. To make generating catalogs easier there is a way
1330 to overwrite the charset selected by the locale: before the first
1331 message or $ quote line the catalog can contain a line like
1333 $ codeset=ISO-8859-2
1335 to select the charset (ISO-8859-2 in this case).
1337 Implemented by Shinya Hanataka and Ulrich Drepper.
1339 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1340 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1341 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1343 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1344 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1346 * The LANGUAGE environment variable is now ignored unless the locale is
1347 changed from the default "C" locale.
1349 * The usual bug fixes.
1350 \f
1351 Version 2.2
1353 * Greg McGary added runtime support for bounds checking using gcc's
1354 new -fbounded-pointers option. ix86 target is complete. PowerPC
1355 is in progress.
1357 * Thorsten Kukuk added secure mode support to nscd.
1359 * The Berkeley db libraries have been removed.
1361 Related, the nss_db module is now in a separate package since it
1362 obviously requires a database library being available.
1364 * Wide character I/O streams implemented by Ulrich Drepper.
1366 * Functions from the extended socket API added by Ulrich Drepper.
1368 * Functions feenableexcept and fedisableexcept to control the
1369 behaviour of individual exceptions have been added by Andreas Jaeger.
1371 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1373 * The resolver code has been updated from bind 8.2.3-T5B which supports
1374 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1375 and Mark Kettenis.
1377 This change could in some situations effect backward compatibility. Since
1378 now `_res' is a thread-local instead of a global variable, modifying it
1379 in one thread does not have any effect in other threads.
1381 The resolver library was also extended to allow IPv6 as the transport
1382 protocol for the requests. This work was done by Stig Venaas.
1384 * Compatibility code for K&R C compilers has been removed from the
1385 header files. A ISO C compiler is needed to use the library
1386 (conforming to either C89 or C99 standard).
1388 * Complete rewrite of the localedef program to support multibyte character
1389 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1390 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1391 Implemented by Ulrich Drepper.
1393 Bruno Haible significantly improved the generation and use of the data
1394 structures for the wide character tables.
1396 * Plural handling in gettext implemented by Ulrich Drepper.
1398 * The utmp daemon has been removed.
1400 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1402 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1403 and Yutaka Niibe.
1405 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1407 * POSIX barriers implemented by Kaz Kylheku.
1409 * POSIX spawn function family implemented by Ulrich Drepper.
1411 * POSIX spinlocks are now available.
1413 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1415 * the configure option --enable-kernel=X.Y.Z allows to strip out
1416 compatibility for kernel versions before X.Y.Z. This is currently only
1417 implemented for Linux.
1419 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1420 field sin6_scope_id. This means that all programs using IPv6 should be
1421 recompiled. Don't expect binary compatibility with previous glibc
1422 versions.
1424 * various conversion modules for IBM character sets contributed by
1425 Masahide Washizawa.
1427 * IA-64 port by Jes Sorensen and HJ Lu.
1428 \f
1429 Version 2.1.3
1431 * bug fixes
1433 \f
1434 Version 2.1.2
1436 * bug fixes
1438 \f
1439 Version 2.1.1
1441 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1443 * New xdr functions are added; some rpc functions are now 64bit clean.
1445 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1447 * Fixed known incompatibilities with glibc 2.0.
1449 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1451 * Optimized a number of functions (especially the ELF dynamic loader).
1453 * Update timezone data files.
1455 * lots of charmaps corrections
1457 * some new locale definitions and charmaps
1459 \f
1460 Version 2.1
1462 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1463 conform to POSIX member type requirements. Symbol versions have been
1464 adjusted as needed within the library, and for direct use by applications,
1465 but there is potential for problems if third-party libraries use
1466 struct timeval as part of their interface. This does not present
1467 a problem for X and other "essential" system libraries.
1469 * An additional locale model to support C++ Standard Library locale
1470 model and probably more was implemented by Ulrich Drepper.
1472 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1473 symbol level.
1475 * Miles Bader provided the `argp' function family to support hierachical
1476 command line argument parsing, layered on top of getopt.
1478 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1480 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1481 numbers.
1483 * scanf recognizes the %a and %A format for scanning floating point numbers.
1485 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1486 information and interfaces for the available integer types.
1488 * about 130 new math functions were added to implement the ISO C9x math
1489 library.
1491 * the new header <complex.h> contains definitions of the complex math
1492 functions from ISO C 9X.
1494 * the new header <tgmath.h> defines generic macros to use complex or
1495 real valued functions.
1497 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1499 * Andreas Jaeger provided a test suite for the math library.
1501 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1503 * Ulrich Drepper added character set conversion functions (iconv).
1505 * Optimized string functions have been added.
1507 * The localedata addon is now part of glibc.
1509 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1511 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1512 daemon for NSS (nscd).
1514 Missing a better place here are some numbers on improvements. Under
1515 Linux 2.1.125 un-tar-ing the kernel sources takes
1517 user system wall
1519 using local files 12.19s 6.88s 22.91s
1521 using NIS 13.92s 8.91s 26.34s
1523 using NIS & nscd 10.37s 7.34s 25.30s
1525 using NIS+ 27.57s 30.37s 640.46s
1527 using NIS+ & nscd 10.25s 7.83s 26.51s
1529 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1531 Keep in mind that non-namelookup related operations dominate above times.
1532 It was just a common complain that using NIS+ unpacking the kernel is
1533 horribly slow.
1535 [1] The old nscd implementation is not available anymore since it was
1536 distributed with glibc up to version 2.0.98 and thus is now replaced.
1538 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1540 * Mark Kettenis provided a Hesiod NSS module.
1542 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1543 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1545 * rcmd can now handle netgroups (Dick Streefland).
1547 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1548 Bambrough.
1550 * Support for the IPv6 protocol has been added to the socket API, as per the
1551 latest draft standards.
1553 * Support for Linux 2.2 has been added.
1555 * Interface changes relative to the latest 2.0.x release:
1556 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1557 addseverity NEW: Unix98
1558 alphasort64 NEW: LFS
1559 argp_err_exit_status NEW: argp, GNU ext
1560 argp_error NEW: argp, GNU ext
1561 argp_failure NEW: argp, GNU ext
1562 argp_help NEW: argp, GNU ext
1563 argp_parse NEW: argp, GNU ext
1564 argp_program_bug_address NEW: argp, GNU ext
1565 argp_program_version NEW: argp, GNU ext
1566 argp_program_version_hook NEW: argp, GNU ext
1567 argp_state_help NEW: argp, GNU ext
1568 argp_usage NEW: argp, GNU ext
1569 authdes_create NEW: Secure RPC
1570 authdes_getucred NEW: Secure RPC
1571 authdes_pk_create NEW: Secure RPC
1572 backtrace NEW: GNU ext.
1573 backtrace_symbols NEW: GNU ext.
1574 backtrace_symbols_fd NEW: GNU ext.
1575 cacos NEW: ISO C 9x
1576 cacosf NEW: ISO C 9x
1577 cacosh NEW: ISO C 9x
1578 cacoshf NEW: ISO C 9x
1579 cacoshl NEW: ISO C 9x
1580 cacosl NEW: ISO C 9x
1581 capget NEW: kernel
1582 capset NEW: kernel
1583 carg NEW: ISO C 9x
1584 cargf NEW: ISO C 9x
1585 cargl NEW: ISO C 9x
1586 casin NEW: ISO C 9x
1587 casinf NEW: ISO C 9x
1588 casinh NEW: ISO C 9x
1589 casinhf NEW: ISO C 9x
1590 casinhl NEW: ISO C 9x
1591 casinl NEW: ISO C 9x
1592 catan NEW: ISO C 9x
1593 catanf NEW: ISO C 9x
1594 catanh NEW: ISO C 9x
1595 catanhf NEW: ISO C 9x
1596 catanhl NEW: ISO C 9x
1597 catanl NEW: ISO C 9x
1598 cbc_crypt NEW: Secure RPC
1599 ccos NEW: ISO C 9x
1600 ccosf NEW: ISO C 9x
1601 ccosh NEW: ISO C 9x
1602 ccoshf NEW: ISO C 9x
1603 ccoshl NEW: ISO C 9x
1604 ccosl NEW: ISO C 9x
1605 cexp NEW: ISO C 9x
1606 cexpf NEW: ISO C 9x
1607 cexpl NEW: ISO C 9x
1608 cimag NEW: ISO C 9x
1609 cimagf NEW: ISO C 9x
1610 cimagl NEW: ISO C 9x
1611 clearerr_locked REMOVED
1612 clntunix_create NEW: sunrpc ext
1613 clog NEW: ISO C 9x
1614 clog10 NEW: ISO C 9x
1615 clog10f NEW: ISO C 9x
1616 clog10l NEW: ISO C 9x
1617 clogf NEW: ISO C 9x
1618 clogl NEW: ISO C 9x
1619 conj NEW: ISO C 9x
1620 conjf NEW: ISO C 9x
1621 conjl NEW: ISO C 9x
1622 cpow NEW: ISO C 9x
1623 cpowf NEW: ISO C 9x
1624 cpowl NEW: ISO C 9x
1625 cproj NEW: ISO C 9x
1626 cprojf NEW: ISO C 9x
1627 cprojl NEW: ISO C 9x
1628 creal NEW: ISO C 9x
1629 crealf NEW: ISO C 9x
1630 creall NEW: ISO C 9x
1631 creat64 NEW: LFS
1632 csin NEW: ISO C 9x
1633 csinf NEW: ISO C 9x
1634 csinh NEW: ISO C 9x
1635 csinhf NEW: ISO C 9x
1636 csinhl NEW: ISO C 9x
1637 csinl NEW: ISO C 9x
1638 csqrt NEW: ISO C 9x
1639 csqrtf NEW: ISO C 9x
1640 csqrtl NEW: ISO C 9x
1641 ctan NEW: ISO C 9x
1642 ctanf NEW: ISO C 9x
1643 ctanh NEW: ISO C 9x
1644 ctanhf NEW: ISO C 9x
1645 ctanhl NEW: ISO C 9x
1646 ctanl NEW: ISO C 9x
1647 des_setparity NEW: Secure RPC
1648 ecb_crypt NEW: Secure RPC
1649 endutxent NEW: Unix98
1650 exp10 NEW: ISO C 9x
1651 exp10f NEW: ISO C 9x
1652 exp10l NEW: ISO C 9x
1653 exp2 NEW: ISO C 9x
1654 exp2f NEW: ISO C 9x
1655 exp2l NEW: ISO C 9x
1656 fattach NEW: STREAMS
1657 fdetach NEW: STREAMS
1658 fdim NEW: ISO C 9x
1659 fdimf NEW: ISO C 9x
1660 fdiml NEW: ISO C 9x
1661 feclearexcept NEW: ISO C 9x
1662 fegetenv NEW: ISO C 9x
1663 fegetexceptflag NEW: ISO C 9x
1664 fegetround NEW: ISO C 9x
1665 feholdexcept NEW: ISO C 9x
1666 feof_locked REMOVED
1667 feraiseexcept NEW: ISO C 9x
1668 ferror_locked REMOVED
1669 fesetenv NEW: ISO C 9x
1670 fesetexceptflag NEW: ISO C 9x
1671 fesetround NEW: ISO C 9x
1672 fetestexcept NEW: ISO C 9x
1673 feupdateenv NEW: ISO C 9x
1674 fflush_locked REMOVED
1675 ffsl NEW: GNU ext.
1676 ffsll NEW: GNU ext.
1677 fgetpos64 NEW: LFS
1678 fgets_unlocked NEW: GNU ext.
1679 fileno_locked REMOVED
1680 fma NEW: ISO C 9x
1681 fmaf NEW: ISO C 9x
1682 fmal NEW: ISO C 9x
1683 fmax NEW: ISO C 9x
1684 fmaxf NEW: ISO C 9x
1685 fmaxl NEW: ISO C 9x
1686 fmin NEW: ISO C 9x
1687 fminf NEW: ISO C 9x
1688 fminl NEW: ISO C 9x
1689 fmtmsg NEW: Unix98
1690 fopen64 NEW: LFS
1691 fputc_locked REMOVED
1692 fputs_unlocked NEW: GNU ext.
1693 fread_unlocked NEW: GNU ext.
1694 freopen64 NEW: LFS
1695 fseeko NEW: Unix98
1696 fsetpos64 NEW: LFS
1697 fstatfs64 NEW: LFS
1698 fstatvfs NEW: Unix98
1699 fstatvfs64 NEW: LFS
1700 ftello NEW: Unix98
1701 ftello64 NEW: LFS
1702 ftruncate64 NEW: LFS
1703 ftw64 NEW: LFS
1704 fwrite_unlocked NEW: GNU ext.
1705 gai_strerror NEW: IPv6
1706 gamma_r REMOVED
1707 gammaf_r REMOVED
1708 gammal_r REMOVED
1709 getchar_locked REMOVED
1710 getdate NEW: Unix98
1711 getdate_err NEW: Unix98
1712 getdate_r NEW: GNU ext.
1713 getmsg NEW: STREAMS
1714 getnameinfo NEW: IPv6
1715 getnetname NEW: Secure RPC
1716 getpmsg NEW: STREAMS
1717 getpt NEW: Unix98 PTY
1718 getrlimit64 NEW: LFS
1719 getutxent NEW: Unix98
1720 getutxid NEW: Unix98
1721 getutxline NEW: Unix98
1722 glob64 NEW: GNU ext.
1723 globfree64 NEW: GNU ext.
1724 gnu_get_libc_release NEW: GNU ext.
1725 gnu_get_libc_version NEW: GNU ext.
1726 grantpt NEW: Unix98 PTY
1727 host2netname NEW: Secure RPC
1728 iconv NEW: iconv
1729 iconv_close NEW: iconv
1730 iconv_open NEW: iconv
1731 if_freenameindex NEW: IPv6
1732 if_indextoname NEW: IPv6
1733 if_nameindex NEW: IPv6
1734 if_nametoindex NEW: IPv6
1735 in6addr_any NEW: IPv6
1736 in6addr_loopback NEW: IPv6
1737 inet6_isipv4mapped NEW: IPv6
1738 isastream NEW: STREAMS
1739 iswblank NEW: GNU ext.
1740 key_decryptsession NEW: Secure RPC
1741 key_decryptsession_pk NEW: Secure RPC
1742 key_encryptsession NEW: Secure RPC
1743 key_encryptsession_pk NEW: Secure RPC
1744 key_gendes NEW: Secure RPC
1745 key_get_conv NEW: Secure RPC
1746 key_secretkey_is_set NEW: Secure RPC
1747 key_setnet NEW: Secure RPC
1748 key_setsecret NEW: Secure RPC
1749 llrint NEW: ISO C 9x
1750 llrintf NEW: ISO C 9x
1751 llrintl NEW: ISO C 9x
1752 llround NEW: ISO C 9x
1753 llroundf NEW: ISO C 9x
1754 llroundl NEW: ISO C 9x
1755 log2 NEW: ISO C 9x
1756 log2f NEW: ISO C 9x
1757 log2l NEW: ISO C 9x
1758 lrint NEW: ISO C 9x
1759 lrintf NEW: ISO C 9x
1760 lrintl NEW: ISO C 9x
1761 lround NEW: ISO C 9x
1762 lroundf NEW: ISO C 9x
1763 lroundl NEW: ISO C 9x
1764 lseek64 NEW: LFS
1765 makecontext NEW: Unix98
1766 mempcpy NEW: GNU ext.
1767 mmap64 NEW: LFS
1768 moncontrol REMOVED
1769 modify_ldt NEW: kernel
1770 nan NEW: ISO C 9x
1771 nanf NEW: ISO C 9x
1772 nanl NEW: ISO C 9x
1773 nearbyint NEW: ISO C 9x
1774 nearbyintf NEW: ISO C 9x
1775 nearbyintl NEW: ISO C 9x
1776 netname2host NEW: Secure RPC
1777 netname2user NEW: Secure RPC
1778 nexttoward NEW: ISO C 9x
1779 nexttowardf NEW: ISO C 9x
1780 nexttowardl NEW: ISO C 9x
1781 nftw NEW: Unix98
1782 nftw64 NEW: LFS
1783 open64 NEW: LFS
1784 passwd2des NEW: Secure RPC
1785 pow10 NEW: GNU ext.
1786 pow10f NEW: GNU ext.
1787 pow10l NEW: GNU ext.
1788 pread NEW: Unix98
1789 pread64 NEW: LFS
1790 printf_size NEW: GNU ext.
1791 printf_size_info NEW: GNU ext.
1792 profil_counter REMOVED
1793 pthread_mutexattr_getkind_np REPLACED
1794 pthread_mutexattr_setkind_np REPLACED
1795 ptsname NEW: Unix98 PTY
1796 ptsname_r NEW: Unix98 PTY
1797 putc_locked REMOVED
1798 putchar_locked REMOVED
1799 putgrent NEW: GNU ext.
1800 putmsg NEW: STREAMS
1801 putpmsg NEW: STREAMS
1802 pututxline NEW: Unix98
1803 pwrite NEW: Unix98
1804 pwrite64 NEW: LFS
1805 readdir64 NEW: LFS
1806 readdir64_r NEW: LFS
1807 remquo NEW: ISO C 9x
1808 remquof NEW: ISO C 9x
1809 remquol NEW: ISO C 9x
1810 round NEW: ISO C 9x
1811 roundf NEW: ISO C 9x
1812 roundl NEW: ISO C 9x
1813 rtime NEW: GNU ext.
1814 scalbln NEW: ISO C 9x
1815 scalblnf NEW: ISO C 9x
1816 scalblnl NEW: ISO C 9x
1817 scandir64 NEW: LFS
1818 sendfile NEW: kernel
1819 setcontext NEW: Unix98
1820 setrlimit64 NEW: LFS
1821 setutxent NEW: Unix98
1822 sighold NEW: Unix98
1823 sigignore NEW: Unix98
1824 sigqueue NEW: POSIX.1b
1825 sigrelse NEW: Unix98
1826 sigset NEW: POSIX.1b
1827 sigtimedwait NEW: POSIX.1b
1828 sigwaitinfo NEW: POSIX.1b
1829 sincos NEW: GNU ext.
1830 sincosf NEW: GNU ext.
1831 sincosl NEW: GNU ext.
1832 statfs64 NEW: LFS
1833 statvfs NEW: Unix98
1834 statvfs64 NEW: LFS
1835 strcasestr NEW: GNU ext.
1836 strtoimax NEW: ISO C 9x
1837 strtoumax NEW: ISO C 9x
1838 strverscmp NEW: GNU ext.
1839 svcauthdes_stats NEW: Secure RPC
1840 svcunix_create NEW: sunrpc etx
1841 svcunixfd_create NEW: sunrpc ext
1842 swapcontext NEW: Unix98
1843 tcgetsid NEW: Unix98 PTY
1844 tdestroy NEW: GNU ext.
1845 tgamma NEW: ISO C 9x
1846 tgammaf NEW: ISO C 9x
1847 tgammal NEW: ISO C 9x
1848 tmpfile64 NEW: LFS
1849 trunc NEW: ISO C 9x
1850 truncate64 NEW: LFS
1851 truncf NEW: ISO C 9x
1852 truncl NEW: ISO C 9x
1853 umount2 NEW: kernel
1854 unlockpt NEW: Unix98 PTY
1855 updwtmpx NEW: Unix98
1856 user2netname NEW: Secure RPC
1857 utmpxname NEW: Unix98
1858 versionsort NEW: GNU ext.
1859 versionsort64 NEW: GNU ext.
1860 waitid NEW: Unix98
1861 wcscasecmp NEW: GNU ext.
1862 wcsncasecmp NEW: GNU ext.
1863 wcsnlen NEW: GNU ext.
1864 wcstoimax NEW: ISO C 9x
1865 wcstoll NEW: ISO C 9x
1866 wcstoull NEW: ISO C 9x
1867 wcstoumax NEW: ISO C 9x
1868 wcswcs NEW: Unix98
1869 wordexp NEW: POSIX.2
1870 wordfree NEW: POSIX.2
1871 write_profiling REMOVED
1872 xdecrypt NEW: Secure RPC
1873 xdr_authdes_cred NEW: Secure RPC
1874 xdr_authdes_verf NEW: Secure RPC
1875 xdr_cryptkeyarg NEW: Secure RPC
1876 xdr_cryptkeyarg2 NEW: Secure RPC
1877 xdr_cryptkeyres NEW: Secure RPC
1878 xdr_getcredres NEW: Secure RPC
1879 xdr_key_netstarg NEW: Secure RPC
1880 xdr_key_netstres NEW: Secure RPC
1881 xdr_keybuf NEW: Secure RPC
1882 xdr_keystatus NEW: Secure RPC
1883 xdr_netnamestr NEW: Secure RPC
1884 xdr_sizeof NEW: Secure RPC
1885 xdr_unixcred NEW: sunrpc ext
1886 xencrypt NEW: Secure RPC
1887 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1888 \f
1889 Version 2.0.6
1891 * more bug fixes
1893 \f
1894 Version 2.0.5
1896 * more bug fixes
1898 * inet_ntoa is thread-safe
1900 * updwtmp is moved from libutil to libc
1902 * rewrite of cbrt function
1904 * update of timezone data
1905 \f
1906 Version 2.0.4
1908 * more bug fixes
1909 \f
1910 Version 2.0.3
1912 * more bug fixes
1913 \f
1914 Version 2.0.2
1916 * more bug fixes
1918 * add atoll function
1920 * fix complex problems in Berkeley DB code
1922 * fix math functions
1923 \f
1924 Version 2.0.1
1926 * fixed lots of header problems (especially Linux/GNU specific)
1928 * dynamic loader preserves all registers
1930 * Roland McGrath provided support for handling of auxiliary objects in
1931 the ELF dynamic loader.
1933 * support for parallel builds is improved
1934 \f
1935 Version 2.0
1937 * GNU extensions are no longer declared by default. To enable them you
1938 must define the macro `_GNU_SOURCE' in your program or compile with
1939 `-D_GNU_SOURCE'.
1941 * The library has changed from using GNU ld symbol aliases to using weak
1942 symbols where available. The ELF object file format supports weak
1943 symbols; GNU ld also supports weak symbols in the a.out format. (There
1944 is also now support for other GNU ld extensions in ELF. Use the
1945 `--with-elf' option to configure to indicate you have ELF, and
1946 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1947 of many files which contained only symbol aliases, reducing the size of
1948 the source and the compiled library; many other files were renamed to
1949 less cryptic names previously occupied by the symbol alias files.
1950 There is a new header file <elf.h> for programs which operate on
1951 files in the ELF format.
1953 * Converted to Autoconf version 2, so `configure' has more options.
1954 Run `configure --help' to see the details.
1956 * The library can now be configured to build profiling, highly-optimized
1957 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1958 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1959 `configure' enable building these extra libraries. The shared library is
1960 built by default when using both ELF and GNU ld. When shared libraries
1961 are enabled, the new library `-ldl' is available for arbitrary run-time
1962 loading of shared objects; its interface is defined in <dlfcn.h>. The
1963 new header file <link.h> gives access to the internals of the run-time
1964 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1965 application of same name on other systems and it provides information
1966 about dynamically linked binaries.
1968 * The C library now provides the run-time support code for profiling
1969 executables compiled with `-pg'. Programs can control the profiling code
1970 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1971 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1972 the support for this file format was contributed by David Mosberger-Tang.
1974 * The math code has been replaced with a math library based on fdlibm from
1975 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1976 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1977 functions. The math functions now reside in a separate library, so
1978 programs using them will need to use `-lm' their linking commands.
1980 * John C. Bowman contributed optimized ix87 assembler inline functions.
1982 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1983 mechanism similar to that found in Solaris 2. This is now used for the
1984 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1985 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1986 file controls what services are used for each individual database. This
1987 works by loading shared libraries with names specified in `nsswitch.conf',
1988 so service modules can be changed or added at any time without even
1989 relinking any program. Currently there are the file, db, and NIS based
1990 NSS services available.
1992 * The new functions `strtoq' and `strtouq' parse integer values from
1993 strings, like `strtol' and `strtoul', but they return `long long int' and
1994 `unsigned long long int' values, respectively (64-bit quantities).
1996 * The new functions `strtof' and `strtold' parse floating-point values from
1997 strings, like `strtod', but they return `float' and `long double' values,
1998 respectively (on some machines `double' and `long double' are the same).
2000 * Ulrich Drepper has contributed new implementations of the floating-point
2001 printing and reading code used in the `printf' family of functions and
2002 `strtod', `strtof', and `strtold'. These new functions are perfectly
2003 accurate, and much faster than the old ones.
2005 * The implementation of the POSIX locale model was completely rewritten by
2006 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2007 to compile the POSIX locale definition.
2009 * The former dummy implementations of the strcoll and strxfrm function are
2010 now replaced by fully functional code contributed by Ulrich Drepper. The
2011 collation information comes from the POSIX locale definitions.
2013 * The new header <langinfo.h> defines an interface for accessing
2014 various locale-dependent data (using the locale chosen with `setlocale').
2016 * Ulrich Drepper has contributed a new suite of functions for operation on
2017 wide-character and multibyte-character strings, in <wchar.h>;
2018 and classification and case conversion of wide characters, in <wctype.h>.
2019 These new functions are conforming to the ISO C, Amendement 1 specification.
2021 * There is now a second implementation of the standard I/O library available.
2022 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2023 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2025 * You can now use positional parameter specifications in format strings
2026 for the `printf' and `scanf' families of functions. For example,
2027 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2028 ``Number 6, Mr Jones''. This is mainly useful when providing different
2029 format strings for different languages, whose grammars may dictate
2030 different orderings of the values being printed. To support this
2031 feature, the interface for `register_printf_handler' has changed; see
2032 the header file <printf.h> for details.
2034 * The `printf' and `scanf' families of functions now understand a new
2035 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2036 to group numbers as indicated by the locale; for `scanf' and friends, this
2037 says to accept as valid only a number with all the proper grouping
2038 separators in the right places. In the default "C" locale, numbers are
2039 not grouped; but locales for specific countries will define the usual
2040 conventions (i.e. separate thousands with `,' in the US locale).
2042 * The pgrp functions have been regularized, slightly incompatibly but much
2043 less confusingly. The core functions are now `getpgid' and `setpgid',
2044 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2045 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2046 provided for compatibility. There is no longer an incompatible `getpgrp'
2047 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2049 * The new header file <fts.h> and suite of functions simplify programs that
2050 operate on directory trees. This code comes from 4.4 BSD.
2052 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2053 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2054 NSS scheme used in glibc.
2056 * There is a new malloc debugging hook `__memalign_hook'.
2058 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2059 `unsigned int' in <sys/types.h>. These are for compatibility only and
2060 their use is discouraged.
2062 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2063 done differently, so that it works even without GNU ld.
2065 * New function `euidaccess' checks allowed access to a file like `access',
2066 but using the effective IDs instead of the real IDs.
2068 * The time zone data files have been updated for the latest and greatest
2069 local time conventions of the countries of the world.
2071 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2072 see <dirent.h>.
2074 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2075 for formatting floating-point numbers. They are provided only for
2076 compatibility; new programs should use `sprintf' instead. There are
2077 also equivalent function for the `long double' floating-point type and
2078 all functions also exist in a reentrant form.
2080 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2081 functions for maintaining the login-record files (primarily of use to
2082 system programs such as `login'), and convenient functions for
2083 allocating and initializing a pseudo-terminal (pty) device.
2085 * Ulrich Drepper has contributed new support for System V style
2086 shared memory and IPC on systems that support it.
2088 * Ulrich Drepper has contributed several miscellaneous new functions found
2089 in System V: The `hsearch' family of functions provide an effective
2090 implementation of hash tables; `a64l' and `l64a' provide a very simple
2091 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2092 number generator.
2094 * Ulrich Drepper has contributed new reentrant counterparts for the
2095 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2097 * Ulrich Drepper has contributed new, highly-optimized versions of several
2098 string functions for the i486/Pentium family of processors.
2100 * Ulrich Drepper has updated the Linux-specific code, based largely
2101 on work done in Hongjiu Lu's version of GNU libc for Linux.
2102 The GNU library now supports Linux versions 2.0.10 and later,
2103 using the ELF object file format (i[3456]86-*-linux).
2105 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2107 * David Mosberger-Tang and Richard Henderson have ported the C library
2108 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2109 dynamic linking support for ELF/Alpha.
2111 * Richard Henderson contributed several Alpha optimized assembler function
2112 for arithmetic and string handling.
2114 * Ulrich Drepper has contributed a new set of message catalog functions to
2115 support multiple languages using the <libintl.h> interface, for use with
2116 his new package GNU gettext. Translation volunteers have contributed
2117 catalogs of the library's messages in Spanish, German, and Korean.
2119 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2120 program and the `catgets' function for reading the catalog files it
2121 creates. (The <libintl.h> interface is preferred; we include the
2122 <nl_types.h> interface using `catgets' only for source compatibility with
2123 programs already written to use it.)
2125 * New header file <values.h> gives SVID-compatible names for <limits.h>
2126 constants.
2128 * Various new macros, declarations, and small header files for compatibility
2129 with 4.4 BSD.
2131 * New function `group_member' is a convenient way to check if a process has
2132 a given effective group ID.
2134 * When using GCC 2.7 and later, the socket functions are now declared in a
2135 special way so that passing an argument of type `struct sockaddr_in *',
2136 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2137 `struct sockaddr *' type, does not generate a type-clash warning.
2139 * New function `error' declared in header file <error.h> is a convenient
2140 function for printing error messages and optionally exiting; this is the
2141 canonical function used in GNU programs. The new functions `err', `warn',
2142 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2143 doing the same thing.
2145 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2146 POSIX.2 `glob' function to do ~ and {...} expansion.
2148 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2149 `clearenv' which is used in POSIX.9 is also available.
2151 * New function `getsid' returns session ID number on systems that support it.
2153 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2154 files <db.h> and <mpool.h> provide a rich set of functions for several
2155 types of simple databases stored in memory and in files, and <ndbm.h> is
2156 an old `ndbm'-compatible interface using the `db' functions. Link with
2157 `-ldb' to get these functions.
2159 * New macro `strdupa' copies a string like `strdup', but uses local stack
2160 space from `alloca' instead of dynamic heap space from `malloc'.
2162 * New function `strnlen' is like `strlen' but searches only a given maximum
2163 number of characters for the null terminator. `stpncpy', `strndup' and
2164 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2165 function.
2167 * New function `statfs' in header <sys/statfs.h>.
2169 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2170 provide convenient functions for operating on blocks of null-terminated
2171 strings.
2173 * A new suite of functions in <utmp.h> handle all the details of reading
2174 and writing the utmp file.
2176 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2177 Thorsten Kukuk.
2179 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2180 completely POSIX compliant and also implemented the extended functionality
2181 to handle alternate digit representation and alternate era date formats.
2183 * Ulrich Drepper provided an implementation of the `strptime' function
2184 defined in XPG4.2 which transforms a string into a `struct tm' value.
2186 * Paul Eggert provided the tzselect shell script as part of the timezone
2187 code. The shell script makes it easy to select the correct timezone
2188 specification.
2190 * The implementation of the malloc family of functions is completely replaced
2191 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2192 The implementation uses the mmap function (if available) and it is
2193 optimized for the use in multi threaded programs.
2195 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2196 functions. This new functionality is usable by specifying a special
2197 salt string and it is compatible with implementation on *BSD systems.
2199 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2200 `getsubopt' to handle second level command line options, `bsd_signal'
2201 to access BSD style `signal' functionality, the obsolete `regexp' style
2202 expression matcher.
2204 * the `lchown' function is available on system which support this
2205 functionality.
2207 * The implementation of the shadow password handling function was contributed
2208 by Ulrich Drepper.
2210 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2212 * POSIX.1g support was added. The <sys/select.h> header is available,
2213 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2214 implementation of `getaddrinfo'.
2215 \f
2216 Version 1.09
2218 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2220 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2221 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2223 * The new function `daemon' from 4.4 BSD is useful for server programs that
2224 want to put themselves in the background.
2226 * Joel Sherrill has contributed support for several standalone boards that
2227 run without an operating system.
2229 * `printf', `scanf' and friends now accept a `q' type modifier for long
2230 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2232 * All of the code taken from BSD (notably most of the math and networking
2233 routines) has been updated from the BSD 4.4-Lite release.
2235 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2237 * The new functions `getdomainname' and `setdomainname' fetch or change the
2238 YP/NIS domain name. These are system calls which exist on systems which
2239 have YP (aka NIS).
2241 * The time zone data files have been updated for the latest international
2242 conventions.
2244 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2245 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2246 \f
2247 Version 1.08
2249 * The C library now includes support for Sun RPC, from Sun's free
2250 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2251 are included. (There is still no support for YP.)
2253 * Tom Quinn has contributed a port of the C library to SGI machines running
2254 Irix 4 (mips-sgi-irix4).
2256 * The new `lockf' function is a simplified interface to the locking
2257 facilities of `fcntl', included for compatibility.
2259 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2261 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2263 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2264 compatibility.
2266 * The error message printed by `assert' for a failed assertion now includes
2267 the name of the program (if using GNU ld) and the name of the calling
2268 function (with versions of GCC that support this).
2270 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2272 * The library now includes the <sys/mman.h> header file and memory
2273 management functions `mmap', `munmap', `mprotect', `msync', and
2274 `madvise', on systems that support those facilities.
2276 * The interface for `mcheck' has changed slightly: the function called to
2277 abort the program when an allocation inconsistency is detected now takes
2278 an argument that indicates the type of failure. The new function
2279 `mprobe' lets you request a consistency check for a particular block at
2280 any time (checks are normally done only when you call `free' or `realloc'
2281 on a block).
2283 * It is now possible to easily cross-compile the C library, building on one
2284 system a library to run on another machine and/or operating system. All
2285 you need to do is set the variable `HOST_CC' in `configparms' to the
2286 native compiler for programs to run on the machine you are building on (a
2287 few generator programs are used on Unix systems); set `CC' to the
2288 cross-compiler.
2290 * The new function `fexecve' (only implemented on the GNU system) executes
2291 a program file given a file descriptor already open on the file.
2292 \f
2293 Version 1.07
2295 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2296 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2298 * You can set the variable `libprefix' in `configparms' to specify a prefix
2299 to be prepended to installed library files; this makes it easy to install
2300 the GNU C library to be linked as `-lgnuc' or whatever.
2302 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2303 copies a limited number of characters from a string, and returns the
2304 address of the last character written.
2306 * You no longer need to check for whether the installed `stddef.h' is
2307 compatible with the GNU C library. configure now checks for you.
2309 * You can now define a per-stream `fileno' function to convert the
2310 stream's cookie into an integral file descriptor.
2312 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2313 allocates zero bytes of storage, and returns a unique pointer which
2314 you can pass to `realloc' or `free'. The behavior is undefined if
2315 you dereference this pointer.
2317 * The C library now runs on Sony NEWS m68k machines running either
2318 NewsOS 3 or NewsOS 4.
2320 * The new `syscall' function is a system-dependent primitive function
2321 for invoking system calls. It has the canonical behavior on Unix
2322 systems, including unreliable return values for some calls (such as
2323 `pipe', `fork' and `getppid').
2325 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2326 to `EAGAIN', which is the preferred name. On systems whose kernels
2327 use two distinct codes, the C library now translates EWOULDBLOCK to
2328 EAGAIN in every system call function.
2329 \f
2330 Version 1.06
2332 * The GNU C Library Reference Manual is now distributed with the library.
2333 `make dvi' will produce a DVI file of the printed manual.
2334 `make info' will produce Info files that you can read on line using C-h i
2335 in Emacs or the `info' program.
2336 Please send comments on the manual to bug-glibc-manual@gnu.org.
2338 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2340 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2342 * Jason Merrill has contributed a port to the Sequent Symmetry running
2343 Dynix version 3 (i386-sequent-dynix).
2345 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2346 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2348 * New function `memory_warnings' lets you arrange to get warnings when
2349 malloc is running out of memory to allocate, like Emacs gives you.
2351 * The C library now contains the relocating allocator used in Emacs 19 for
2352 its editing buffers. This allocator (ralloc) minimizes allocation
2353 overhead and fragmentation by moving allocated regions around whenever it
2354 needs to. You always refer to a ralloc'd region with a "handle" (a
2355 pointer to a pointer--an object of type `void **').
2357 * There is a new `printf' format: `%m' gives you the string corresponding
2358 to the error code in `errno'.
2360 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2361 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2362 pass, the `a' modifier says to fill in a `char **' you pass with a
2363 malloc'd string.
2365 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2366 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2367 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2369 * `mkstemp' is a traditional Unix function to atomically create and open a
2370 uniquely-named temporary file.
2371 \f
2372 Version 1.05
2374 * The standard location for the file that says what the local timezone is
2375 has changed again. It is now `/usr/local/etc/localtime' (or more
2376 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2378 * The distribution no longer contains any files with names longer than 14
2379 characters.
2381 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2382 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2384 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2385 \f
2386 Version 1.04
2388 * The configuration process has changed quite a bit. The `configure'
2389 script is now used just like the configuration scripts for other GNU
2390 packages. The `sysdeps' directory hierarchy is much rearranged.
2391 The file `INSTALL' explains the new scheme in detail.
2393 * The header files no longer need to be processed into ANSI C and
2394 traditional C versions. There is just one set of files to install, and
2395 it will work with ANSI or old C compilers (including `gcc -traditional').
2397 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2398 MIPS DECStation running Ultrix 4.
2400 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2401 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2402 made itself into a shared library.
2404 * Yet further improved support for the i386, running 4.3 BSD-like systems
2405 (such as Mach 3 with the Unix single-server), or System V.
2407 * New function `strncasecmp' to do case-insensitive string comparison
2408 with limited length.
2410 * New function `strsep' is a reentrant alternative to `strtok'.
2412 * New functions `scandir' and `alphasort' for searching directories.
2414 * New function `setenv' is a better interface to `putenv'.
2416 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2417 function for traversing a directory tree.
2419 * The GNU obstack package is now also part of the C library.
2420 The new function `open_obstack_stream' creates a stdio stream that
2421 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2422 formatted output directly to an obstack.
2424 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2425 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2427 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2429 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2430 things to your strings.
2432 * There are some new test programs: test-fseek, testmb, and testrand.
2434 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2435 These ports are not finished, but are a good starting place for really
2436 supporting those systems.
2438 * `/etc/localtime' is now the standard location for the file that says what
2439 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2440 This follows the general principle that `/etc' is the place for all local
2441 configuration files.
2443 * The C library header files now use `extern "C"' when used by the C++
2444 compiler, so the C library should now work with C++ code.
2446 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2447 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2448 in <strings.h>.)
2450 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2451 function which uses the `merge sort' algorithm, and is said to be
2452 significantly faster than the old GNU `qsort' function. Merge sort is
2453 now the standard `qsort' function. The new algorithm can require a lot
2454 of temporary storage; so, the old sorting function is called when the
2455 required storage is not available.
2457 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2458 provides the Unix `crypt' function, plus some other entry points.
2460 * The code and header files taken from 4.4 BSD have been updated with the
2461 latest files released from Berkeley.
2462 \f
2463 ----------------------------------------------------------------------
2464 Copyright information:
2466 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2468 Permission is granted to anyone to make or distribute verbatim copies
2469 of this document as received, in any medium, provided that the
2470 copyright notice and this permission notice are preserved,
2471 thus giving the recipient permission to redistribute in turn.
2473 Permission is granted to distribute modified versions
2474 of this document, or of portions of it,
2475 under the above conditions, provided also that they
2476 carry prominent notices stating who last changed them.
2477 \f
2478 Local variables:
2479 version-control: never
2480 fill-column: 76
2481 End: