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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, 17125,
25 17135, 17137, 17153.
27 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
29 * The minimum Linux kernel version that this version of the GNU C Library
30 can be used with is 2.6.32.
32 * Running the testsuite no longer terminates as soon as a test fails.
33 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
34 with PASS or FAIL lines for individual tests. A summary of the results is
35 printed, including a list of failing lists, and "make check" exits with
36 error status if there were any unexpected failures. "make check
37 stop-on-test-failure=y" may be used to keep the old behavior.
39 * The am33 port, which had not worked for several years, has been removed
40 from ports.
42 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
43 supported; they now act the same as _DEFAULT_SOURCE (but generate a
44 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
45 conflicted with POSIX (support for which was removed in 2.19), the
46 interfaces those macros enabled remain available when compiling with
47 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
48 test macros defined.
50 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
52 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
53 This may improve lock scaling of existing programs on TX capable systems.
54 The lock elision code is only built with --enable-lock-elision=yes and
55 then requires a GCC version supporting the TX builtins. With lock elision
56 default mutexes are elided via __builtin_tbegin, if the cpu supports
57 transactions. By default lock elision is not enabled and the elision code
58 is not built.
60 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
61 copy the path argument. This allowed programs to cause posix_spawn to
62 deference a dangling pointer, or use an unexpected pathname argument if
63 the string was modified after the posix_spawn_file_actions_addopen
64 invocation.
66 * All supported architectures now use the main glibc sysdeps directory
67 instead of some being in a separate "ports" directory (which was
68 distributed separately before glibc 2.17).
70 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
71 On configurations that support it (all Linux configurations), it's now
72 used regardless of the --enable-add-ons switch to configure. It is no
73 longer possible to build such configurations without pthreads support.
75 * Locale names, including those obtained from environment variables (LANG
76 and the LC_* variables), are more tightly checked for proper syntax.
77 setlocale will now fail (with EINVAL) for locale names that are overly
78 long, contain slashes without starting with a slash, or contain ".." path
79 components. (CVE-2014-0475) Previously, some valid locale names were
80 silently replaced with the "C" locale when running in AT_SECURE mode
81 (e.g., in a SUID program). This is no longer necessary because of the
82 additional checks.
83 \f
84 Version 2.19
86 * The following bugs are resolved with this release:
88 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
89 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
90 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
91 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
92 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
93 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
94 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
95 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
96 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
97 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
98 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
99 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
100 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
101 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
102 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
103 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
104 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
105 16431, 16453, 16474, 16506, 16510, 16529
107 * Slovenian translations for glibc messages have been contributed by the
108 Translation Project's Slovenian team of translators.
110 * The public headers no longer use __unused nor __block. This change is to
111 support compiling programs that are derived from BSD sources and use
112 __unused internally, and to support compiling with Clang's -fblock
113 extension which uses __block.
115 * CVE-2012-4412 The strcoll implementation caches indices and rules for
116 large collation sequences to optimize multiple passes. This cache
117 computation may overflow for large collation sequences and may cause a
118 stack or buffer overflow. This is now fixed to use a slower algorithm
119 which does not use a cache if there is an integer overflow.
121 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
122 rules for large collation sequences to optimize multiple passes and falls
123 back to alloca if malloc fails, resulting in a possible stack overflow.
124 The implementation now falls back to an uncached collation sequence lookup
125 if malloc fails.
127 * CVE-2013-4788 The pointer guard used for pointer mangling was not
128 initialized for static applications resulting in the security feature
129 being disabled. The pointer guard is now correctly initialized to a
130 random value for static applications. Existing static applications need
131 to be recompiled to take advantage of the fix (bug 15754).
133 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
134 to the d_name member of struct dirent, or omit the terminating NUL
135 character. (Bugzilla #14699).
137 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
138 aligned_alloc functions could allocate too few bytes or corrupt the
139 heap when passed very large allocation size values (Bugzilla #15855,
140 #15856, #15857).
142 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
143 for AF_INET6 has been fixed (Bugzilla #16072).
145 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
146 pap_CW, quz_PE, the_NP.
148 * Substantially revised locales: gd_GB, ht_HT
150 * The LC_ADDRESS field was updated to support country_car for almost all
151 supported locales.
153 * ISO 1427 definitions were updated.
155 * ISO 3166 definitions were updated.
157 * The localedef utility now supports --big-endian and --little-endian
158 command-line options to generate locales for a different system from that
159 for which the C library was built.
161 * Binary locale files now only depend on the endianness of the system for
162 which they are generated and not on other properties of that system. As a
163 consequence, binary files generated with new localedef may be incompatible
164 with old versions of the GNU C Library, and binary files generated with
165 old localedef may be incompatible with this version of the GNU C Library,
166 in the following circumstances:
168 + Locale files may be incompatible on m68k systems.
170 + Locale archive files (but not separate files for individual locales) may
171 be incompatible on systems where plain "char" is signed.
173 * The configure option --disable-versioning has been removed. Builds with
174 --disable-versioning had not worked for several years.
176 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
177 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
179 * SystemTap probes for malloc have been introduced.
181 * SystemTap probes for slow multiple precision fallback paths of
182 transcendental functions have been introduced.
184 * Support for powerpc64le has been added.
186 * The soft-float powerpc port now supports e500 processors.
188 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
190 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
191 set of header declarations that are enabled by default, even when other
192 feature test macros or compiler options such as -std=c99 would otherwise
193 disable some of those declarations.
195 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
196 conflict with POSIX. The libbsd-compat library (which was a dummy library
197 that did nothing) has also been removed.
199 * Preliminary documentation about Multi-Thread, Async-Signal and
200 Async-Cancel Safety has been added.
202 * Change of ABI data structures for s390 and s390x:
203 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
204 allow for future hardware extensions. All library functions that accept or
205 return these structures were versioned in order to provide backwards
206 compatibility with existing code. However, not all cases can be handled
207 with interface versioning. If an application embeds either structure into
208 another structure and that structure is passed to another compilation unit
209 which expects the newer larger-sized object then any access to the new
210 fields will result in undefined behaviour. Similarly any access to fields
211 that were moved by the enlarging of the structures will cause undefined
212 behaviour. To fix the undefined behaviour all objects that are part of the
213 final in-memory image must agree on the size of structures, and this may
214 require recompilation.
215 \f
216 Version 2.18
218 * The following bugs are resolved with this release:
220 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
221 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
222 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
223 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
224 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
225 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
226 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
227 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
228 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
229 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
230 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
231 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
232 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
233 15759.
235 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
236 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
237 Distributions can re-enable building and using pt_chown via the new configure
238 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
239 considerable security risks and should only be used if the distribution
240 understands and accepts the risks.
242 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
243 #15078).
245 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
246 fixed (Bugzilla #15330).
248 * Add support for calling C++11 thread_local object destructors on thread
249 and program exit. This needs compiler support for offloading C++11
250 destructor calls to glibc.
252 * Improved worst case performance of libm functions with double inputs and
253 output.
255 * Support for priority inherited mutexes in pthread condition variables on
256 non-x86 architectures.
258 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
260 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
262 * Optimized string functions for ARM. Implemented by Will Newton and
263 Richard Henderson.
265 * Optimized libm functions for SPARC. Implemented by David S. Miller.
267 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
268 Richard Henderson.
270 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
271 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
273 * Added a benchmark framework to track performance of functions in glibc.
275 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
276 It is based on draft TS 18661 and currently enabled as a GNU extension.
278 * On Linux, the clock function now uses the clock_gettime system call
279 for improved precision, rather than old times system call.
281 * Added support for version-3 tz format files. This is needed when using
282 the tz database release 2013e or later, and affects a few unusual cases --
283 currently only TZ='America/Godthab' for time stamps after 2037.
285 * Added new API functions pthread_getattr_default_np and
286 pthread_setattr_default_np to get and set the default pthread
287 attributes of a process.
289 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
290 This may improve lock scaling of existing programs on TSX capable systems.
291 When the --enable-lock-elision=yes parameter is specified at configure
292 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
293 mutexes.
295 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
296 availability). Implemented by Ryan S. Arnold.
298 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
299 \f
300 Version 2.17
302 * The following bugs are resolved with this release:
304 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
305 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
306 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
307 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
308 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
309 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
310 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
311 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
312 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
313 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
314 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
315 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
316 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
317 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
318 14879, 14889, 14893, 14898, 14914.
320 * Optimization of memcpy for MIPS.
322 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
323 EMFILE has been fixed (Bugzilla #14889).
325 * The add-on ports collection is now distributed in the "ports" subdirectory
326 of the main GNU C Library distribution, rather than separately.
328 * Port to ARM AArch64 contributed by Linaro.
330 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
331 Optimized versions of memcpy, memset, and memcmp added for System z10 and
332 zEnterprise z196.
333 Implemented by Andreas Krebbel.
335 * The new function secure_getenv allows secure access to the environment,
336 returning NULL if running in a SUID/SGID process. This function replaces
337 the internal function __secure_getenv.
339 * SystemTap static probes have been added into the dynamic linker.
340 Implemented by Gary Benson.
342 * Optimizations of string functions strstr, strcasestr and memmem.
343 Implemented by Maxim Kuvyrkov.
345 * The minimum Linux kernel version that this version of the GNU C Library
346 can be used with is 2.6.16.
348 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
349 powerpc POWER7. Implemented by Will Schmidt.
351 * New configure option --disable-nscd builds the C library such that it
352 never attempts to contact the Name Service Caching Daemon (nscd).
353 New configure option --disable-build-nscd avoids building nscd itself;
354 this is the default if --disable-nscd is used.
356 * Improved support for cross-compilation, including cross-testing and
357 bootstrap builds without a previously built glibc.
359 * Several testsuite tests are now able to test multiple IFUNC variants of an
360 interface, rather than just testing the one that would be chooen by
361 default.
363 * New configure options --with-bugurl and --with-pkgversion, for
364 distributors to use to embed their bug-reporting and package version
365 information in --help and --version output.
367 * The ttyname and ttyname_r functions on Linux now fall back to searching for
368 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
369 allows creation of chroots without the procfs mounted on /proc.
371 * The `crypt' function now fails if passed salt bytes that violate the
372 specification for those values. On Linux, the `crypt' function will
373 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
374 enabled, and fail on encrypted strings using the MD5 or DES algorithm
375 when the mode is enabled.
377 * The `clock_*' suite of functions (declared in <time.h>) is now available
378 directly in the main C library. Previously it was necessary to link with
379 -lrt to use these functions. This change has the effect that a
380 single-threaded program that uses a function such as `clock_gettime' (and
381 is not linked with -lrt) will no longer implicitly load the pthreads
382 library at runtime and so will not suffer the overheads associated with
383 multi-thread support in other code such as the C++ runtime library.
385 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
386 sat_IN, and szl_PL.
387 \f
388 Version 2.16
390 * The following bugs are resolved with this release:
392 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
393 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
394 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
395 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
396 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
397 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
398 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
399 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
400 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
401 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
402 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
403 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
404 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
405 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
406 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
407 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
408 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
409 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
410 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
411 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
412 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
413 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
414 14277, 14278.
416 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
417 configuring glibc with:
418 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
419 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
420 Implemented by H.J. Lu.
422 * ISO C11 support:
424 + define static_assert
426 + do not declare gets
428 + declare at_quick_exit and quick_exit also for ISO C11
430 + aligned_alloc. NB: The code is deliberately allows the size parameter
431 to not be a multiple of the alignment. This is a moronic requirement
432 in the standard but it is only a requirement on the caller, not the
433 implementation.
435 + timespec_get added
437 + uchar.h support added
439 + CMPLX, CMPLXF, CMPLXL added
441 Implemented by Ulrich Drepper.
443 * Support for the IA-64 has been moved to ports.
445 * Remove support for anything but ELF binary format
447 * Checking versions of poll, ppoll added.
448 Implemented by Ulrich Drepper.
450 * More generic and 64-bit performance optimizations to math functions.
451 Implemented by Ulrich Drepper.
453 * New configure option --enable-obsolete-rpc makes the deprecated RPC
454 headers and functions available at compile time as they were before
455 version 2.14. This option will be removed at some time in the future
456 after the TI-RPC library becomes fully sufficient for the needs of
457 existing applications.
459 * Compatibility code for Linux kernel versions before 2.4 has been removed.
460 Note that glibc is not expected to work with any Linux kernel version
461 before 2.6.
463 * New header <sys/auxv.h> and function getauxval allowing easy access to
464 the AT_* key-value pairs passed from the Linux kernel. The header also
465 defines the HWCAP_* bits associated with the AT_HWCAP key.
467 * New locales: mag_IN
469 * New configure option --enable-systemtap builds SystemTap static probes
470 into libc for setjmp and longjmp and into libpthread for various operations.
471 So far the setjmp/longjmp probes and some of the libpthread probes are
472 provided only for i*86 and x86_64.
473 Implemented by Roland McGrath and Rayson Ho.
475 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
477 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
478 and Will Schmidt.
480 * More optimized functions for SPARC. Implemented by David S. Miller.
482 * Improved support for cross-compilation, especially bootstrap builds
483 without a previously built glibc.
485 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
486 Chris Metcalf from Tilera.
488 * Support for the old ARM ABI has been removed from ports. Only the EABI is
489 now supported for ARM processors.
491 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
492 as the name of the dynamic linker, to distinguish it from the
493 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
495 * Support for CRIS has been removed from ports.
497 * A new class of installed header has been documented for low-level
498 platform-specific functionality. PowerPC added the first instance with a
499 function to provide time base register access. Contributed by Tulio
500 Magno Quites Machado Filho.
502 * ix86 configurations now install header files that are consistent with
503 what x86-64 configurations install. These same header files can be used
504 for -m32, -m64, or -mx32 builds.
505 Contributed by H.J. Lu.
507 * Math library bug fixes. A thorough audit of all open math library bugs was
508 conducted by Joseph Myers. Significant progress was made on many math
509 library bugs resulting in more accurate exceptions and function results.
510 Many thanks to all those that contributed including Andreas Jaeger for his
511 patch review and work on the x87 trigonometric instruction issues.
513 * Timezone data is no longer installed. Timezone-related binaries and scripts
514 will continue to be installed. Users should obtain their timezone data from
515 their distribution provider or from the tzdata package at
516 <ftp://munnari.oz.au/pub/>.
517 \f
518 Version 2.15
520 * The following bugs are resolved with this release:
522 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
523 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
524 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
525 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
526 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
527 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
528 13484, 13506, 13515, 13523, 13524, 13538, 13540
530 * New program pldd to list loaded object of a process
531 Implemented by Ulrich Drepper.
533 * Add nss_db support back to glibc. No more dependency on Berkeley db
534 and support for initgroups lookups.
535 Implemented by Ulrich Drepper.
537 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
538 Contributed by HJ Lu.
540 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
541 Contributed by HJ Lu.
543 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
544 on x86-32 and x86-64.
545 Contributed by Liubov Dmitrieva.
547 * Optimized strchr and strrchr for SSE on x86-32.
548 Contributed by Liubov Dmitrieva.
550 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
551 for x86-64 and x86-32.
552 Contributed by Liubov Dmitrieva.
554 * New interfaces: scandirat, scandirat64
555 Implemented by Ulrich Drepper.
557 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
558 Implemented by Ulrich Drepper.
560 * nscd now also caches the netgroup database.
561 Implemented by Ulrich Drepper.
563 * Integrate libm with gcc's -ffinite-math-only option.
564 Implemented by Ulrich Drepper.
566 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
567 to math functions. Implemented by Ulrich Drepper.
569 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
570 Implemented by Ulrich Drepper.
572 * New Linux interfaces: process_vm_readv, process_vm_writev
574 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
575 Implemented by Ulrich Drepper.
577 * Optimized nearbyint and strcasecmp for PPC.
578 Implemented by Adhemerval Zanella.
580 * New locales: bho_IN, unm_US, es_CU, ta_LK
581 \f
582 Version 2.14
584 * The following bugs are resolved with this release:
586 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
587 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
588 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
589 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
590 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
591 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
592 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
593 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
594 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
595 12795, 12811, 12813, 12814, 12841
597 * The RPC implementation in libc is obsoleted. Old programs keep working
598 but new programs cannot be linked with the routines in libc anymore.
599 Programs in need of RPC functionality must be linked against TI-RPC.
600 The TI-RPC implementation is IPv6 enabled and there are other benefits.
602 Visible changes of this change include (obviously) the inability to link
603 programs using RPC functions without referencing the TI-RPC library and the
604 removal of the RPC headers from the glibc headers.
605 Implemented by Ulrich Drepper.
607 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
608 syncfs, setns, sendmmsg
610 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
611 yue_HK, lij_IT, mhr_RU
613 * New encodings: CP770, CP771, CP772, CP773, CP774
615 * New program sotruss to trace calls through PLTs
616 Implemented by Ulrich Drepper.
618 * The malloc hook implementation is marked deprecated and will be removed
619 from the default implementation in the next version. The design never
620 worked ever since the introduction of threads. Even programs which do
621 not create threads themselves can use multiple threads created internally.
622 \f
623 Version 2.13
625 * The following bugs are resolved with this release:
627 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
628 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
629 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
630 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
631 12378, 12394, 12397
633 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
635 * POWER7 optimizations: memset, memcmp, strncmp
637 * New optimized string functions for x86-64: strnlen (SSE2),
638 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
639 Implemented by Ulrich Drepper.
640 \f
641 Version 2.12
643 * The following bugs are resolved with this release:
645 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
646 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
647 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
648 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
649 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
650 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
651 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
652 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
654 * New interfaces: pthread_getname_np, pthread_setname_np
656 * New Linux interface: recvmmsg
658 * STT_GNU_IFUNC implemented for Sparc by David Miller.
660 * The dynamic linker now recognizes supported ABI versions from the
661 EI_ABIVERSION field in the ELF header.
662 Implemented by Ulrich Drepper.
664 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
665 will not be used to fill in password fields in the passwd.byname replies.
666 Instead it is used to synthesize the shadow.byname table, should it be
667 missing. This is a useful mode in some installations involving Solaris.
668 Implemented by Ulrich Drepper.
670 * New locales: kok_IN, sq_MK, cv_RU
671 \f
672 Version 2.11
674 * The following bugs are resolved with this release:
676 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
677 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
678 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
679 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
680 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
681 10789, 10817, 10823, 10840, 10847
683 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
684 mkostemps64
685 Implemented by Ulrich Drepper.
687 * Checking version of longjmp added that fails if an uninitialized stack
688 frame would be created. Implemented by Ulrich Drepper.
690 * STT_GNU_IFUNC is now supported in static executables.
691 Implemented by H.J. Lu.
693 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
695 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
696 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
697 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
698 Contributed by H.J. Lu.
700 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
701 Implemented by Ulrich Drepper.
703 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
704 strstr, strcasestr.
705 Contributed by H.J. Lu.
707 * Support for fma instruction in AVX on x86-64.
708 Implemented by H.J. Lu and Ulrich Drepper.
710 * AVX support in x86-64 auditing support in ld.so.
711 Implemented by H.J. Lu.
713 * STB_GNU_UNIQUE support added.
714 Implemented by Ulrich Drepper.
716 * Implement second fallback mode for optimized DNS lookup for even more
717 broken environments. If two requests from the same port are not
718 handled correctly close the socket and open a new one before sending
719 the second request. The 'single-request-reopen' option in /etc/resolv.conf
720 can be used to select this mode right away, instead of rediscovering the
721 necessity is every process again.
722 Implemented by Ulrich Drepper.
724 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
725 Implemented by Adam Tkac.
727 * Optimized iconv conversions for S390x.
728 Implemented by Andreas Krebbel.
730 * Using condvars with PI mutexes is now more efficient due to kernel
731 support for requeueing to PI futexes. NPTL support added for x86-64.
732 Implemented by Ulrich Drepper.
734 * New locales: ps_AF, my_MM
735 \f
736 Version 2.10
738 * The following bugs are resolved with this release:
740 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
741 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
742 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
743 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
744 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
746 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
747 Implemented by Ulrich Drepper.
749 * New Linux interfaces: accept4, fallocate, fallocate64.
750 Implemented by Ulrich Drepper.
752 * Correct declarations of string function when used in C++ code. This
753 could lead to compile errors for invalid C++ code.
755 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
756 now in POSIX.
758 * New POSIX 2008 interface: psiginfo
759 Implemented by Ulrich Drepper.
761 * New ISO C++1x interfaces: quick_exit, at_quick_exit
762 Implemented by Ulrich Drepper.
764 * Support for selecting between multiple function definitions at runtime
765 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
767 * The libcrypt library can now use the hash function implementations in
768 NSS. Implemented by Ulrich Drepper.
770 * The malloc implementation can be compiled to be less memory efficient
771 but higher performing in multi-threaded programs.
772 Implemented by Ulrich Drepper.
774 * New locales: nan_TW@latin, ks_IN
776 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
777 Implemented by Ulrich Drepper.
779 * Extended printf hook support. It is possible to use user-defined types
780 and extend existing format specifiers.
781 Implemented by Ulrich Drepper.
783 * Handling for group shadow files has been added.
784 Implemented by Ulrich Drepper.
786 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
787 servers (the case, e.g., for some people using the built-in DNS
788 server in ADSL modems/routers). There is a once-per-process timeout
789 in case of a broken server. To avoid it, users can run nscd or put
790 'options single-request' in /etc/resolv.conf.
791 Implemented by Ulrich Drepper.
792 \f
793 Version 2.9
795 * The following bugs are resolved with this release:
797 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
798 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
799 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
800 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
801 6968, 6974, 6980, 6995, 7008, 7009, 7029
803 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
804 up at the same time. Implemented by Ulrich Drepper.
806 * TLS descriptors for LD and GD on x86 and x86-64.
807 Implemented by Alexandre Oliva.
809 * getaddrinfo now handles DCCP and UDPlite.
810 Implemented by Ulrich Drepper.
812 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
813 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
814 Implemented by Ulrich Drepper.
816 * New implementation of memmem, strstr, and strcasestr which is O(n).
817 Implemented by Eric Blake.
819 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
821 * Implement "e" option for popen to open file descriptor with the
822 close-on-exec flag set. Implemented by Ulrich Drepper.
824 * Implement "b" mode for fmemopen. In this mode writes writes don't
825 implicitly add a NUL byte and seeks from the end of the buffer really
826 use the buffer end, not the string length as the basis.
827 Implemented by Ulrich Drepper.
829 * Many functions, exported and internal, now atomically set the close-on-exec
830 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
832 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
833 Sinhala)
834 Implemented by Pravin Satpute.
836 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
837 \f
838 Version 2.8
840 * The following bugs are resolved with this release:
842 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
843 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
844 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
845 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
846 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
847 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
848 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
850 * New locales: bo_CN, bo_IN, shs_CA.
852 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
854 * Sorting rules for some Indian languages (Devanagari and Gujarati).
855 Implemented by Pravin Satpute.
857 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
859 * nscd caches now all timeouts for DNS entries
860 Implemented by Ulrich Drepper.
862 * nscd is more efficient and wakes up less often.
863 Implemented by Ulrich Drepper.
865 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
866 vdprintf, and obstack_vprintf.
867 Implemented by Jakub Jelinek.
869 * Faster memset for x86-64.
870 Implemented by Harsha Jagasia and H.J. Lu.
872 * Faster memcpy on x86.
873 Implemented by Ulrich Drepper.
875 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
876 Implemented by Ulrich Drepper.
878 * Faster sqrt and sqrtf implemention for some PPC variants.
879 Implemented by Steven Munroe.
880 \f
881 Version 2.7
883 * The following bugs are resolved with this release:
885 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
886 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
887 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
888 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
889 5071, 5103, 5104, 5112, 5113, 5184, 5186
891 * More checking functions: fread, fread_unlocked, open*, mq_open.
892 Implemented by Jakub Jelinek and Ulrich Drepper.
894 * Extend fortification to C++. Implemented by Jakub Jelinek.
896 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
897 by not recognizing 'a' as a modifier when those specs are requested.
898 Implemented by Jakub Jelinek.
900 * PPC optimizations to math and string functions.
901 Implemented by Steven Munroe.
903 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
904 options to be passed. Implemented by Ulrich Drepper.
906 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
908 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
909 Implemented by Ulrich Drepper.
911 * Handle private futexes in the NPTL implementation.
912 Implemented by Jakub Jelinek and Ulrich Drepper.
914 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
915 Implemented by Roland McGrath and Ulrich Drepper.
917 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
919 * SHA-256 and SHA-512 based password encryption.
920 Implemented by Ulrich Drepper.
922 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
923 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
924 yo_NG.
926 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
927 Implemented by Ulrich Drepper.
928 \f
929 Version 2.6
931 * The following bugs are resolved with this release:
933 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
934 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
935 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
936 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
937 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
938 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
939 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
940 4702, 4858
942 * New Linux interfaces: epoll_pwait, sched_getcpu.
944 * New generic interfaces: strerror_l.
946 * nscd can now cache the services database. Implemented by Ulrich Drepper.
947 \f
948 Version 2.5
950 * The following bugs are resolved with this release:
952 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
953 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
954 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
955 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
956 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
957 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
958 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
959 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
960 3225, 3251, 3252, 3253, 3273
962 * For Linux, the sorting of addresses returned by getaddrinfo now also
963 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
964 Implemented by Ulrich Drepper.
966 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
967 Implemented by Ulrich Drepper.
969 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
971 * New iconv module for MIK. Contributed by Alexander Shopov.
973 * For sites with broken group and/or passwd database, the auto-propagate
974 option of nscd can prevent creating ID lookup entries from the results
975 of a name lookup and vice versa. This usually is no problem but some
976 site might have problems with the default behavior.
977 Implemented by Ulrich Drepper.
979 * Iterating over entire database in NIS can be slow. With the
980 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
981 to trade time for memory. The entire database will be read at once.
982 Implemented by Ulrich Drepper.
984 * The interfaces introduced in RFC 3542 have been implemented by
985 Ulrich Drepper.
987 * Support for the new ELF hash table format was added by Ulrich Drepper.
989 * Support for priority inheritance mutexes added by Jakub Jelinek and
990 Ulrich Drepper.
992 * Support for priority protected mutexes added by Jakub Jelinek.
994 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
995 or_IN, csb_PL, fy_NL, sr_ME.
996 \f
997 Version 2.4
999 * More overflow detection functions.
1001 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1002 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1004 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1005 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1006 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1007 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1008 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1009 by Masahide Washizawa.
1011 * It is now possible to install audit libraries for the dynamic linker using
1012 LD_AUDIT. Implemented by Ulrich Drepper.
1014 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1015 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1016 For a libc and libpthread that works well on Linux 2.4 kernels, we
1017 recommend using the stable 2.3 branch.
1019 * The new function open_wmemstream acts like open_memstream,
1020 but uses a wchar_t wide character buffer.
1022 * The new function ppoll is an improved version of poll, similar to pselect.
1024 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1025 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1026 renameat, unlinkat, linkat, symlinkat, readlinkat.
1028 * New Linux kernel system calls: unshare,
1029 inotify_init, inotify_add_watch, inotify_rm_watch.
1031 * The euidaccess function is now also known by the alias eaccess,
1032 for compatibility with some other systems.
1034 * Timezone data updated to 2006b version.
1035 \f
1036 Version 2.3.6
1038 * The following bugs are resolved with this release:
1040 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1041 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1042 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1043 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1044 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1045 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1047 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1049 * As of this release, GCC 4 can be used to compile the C Library.
1051 * Timezone data updated to 2005m version.
1052 \f
1053 Version 2.3.5
1055 * The following bugs are resolved with this release:
1057 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1058 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1059 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1060 777, 787, 821, 822, 823, 825
1062 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1063 \f
1064 Version 2.3.4
1066 * Support for RFC 3678. Real implementations exist only for Linux so far.
1067 Implemented by Ulrich Drepper.
1069 * nscd can now cache entries persistently. Expiring entries are reloaded.
1070 For speedups the cache can be shared in memory with client processes.
1071 Implemented by Ulrich Drepper.
1073 * nscd can now perform SELinux checks.
1074 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1076 * getaddrinfo queries are now cached. Canonical name lookup is performed
1077 efficiently.
1078 Implemented by Ulrich Drepper.
1080 * The nothrow function attribute is used when headers are used by gcc when
1081 compiling C code. This can avoid significant amounts of exception
1082 handling data.
1084 * The malloc functions perform more error checking and are stricter when
1085 it comes to reacting on errors. The default action is to terminate
1086 the process after showing an error message. Implemented by Ulrich Drepper.
1088 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1089 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1091 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1092 namespaces using the new function dlmopen(). This feature is of course,
1093 like most other dynamic loading functionality, not available in statically
1094 linked applications. Implemented by Ulrich Drepper.
1096 * Low-overhead boundary checking variants of string and some stdio functions
1097 were added. These are to be used in conjunction with a gcc patch by
1098 Jakub Jelinek which adds calls to these functions if possible.
1099 Implemented by Jakub Jelinek and Ulrich Drepper.
1101 * Old code for several operating systems and machine architectures that
1102 have not been in working condition in a long time have been removed from
1103 the main source tree maintained by the GNU C Library's maintainers.
1104 These files are now reside in the separate `ports' source module
1105 that is usable as an add-on when building the library.
1106 \f
1107 Version 2.3.3
1109 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1110 interrogate the dynamic linker, compatible with the Solaris interface.
1112 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1113 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1115 * getifaddrs now uses the netlink interface on Linux to get its information.
1116 Implemented by Thorsten Kukuk.
1118 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1119 Implemented by Ulrich Drepper.
1121 * support for non-executable stacks on x86 has been added. Changes mostly
1122 by Roland McGrath.
1124 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1125 and Ulrich Drepper.
1127 * getaddrinfo now performs destination address selection according to
1128 RFC 3484.
1129 \f
1130 Version 2.3.2
1132 * Thread-safe interfaces for many functions that access locale data
1133 were added in version 2.3, but these features were omitted from NEWS.
1134 Many functions have variants with an `_l' suffix that take a `locale_t'
1135 object as a parameter rather than consulting the current locale.
1136 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1137 create and maintain `locale_t' objects. Additionally, the new function
1138 `uselocale' sets "the current locale" (as used by functions not so
1139 parameterized) set for an individual thread. These features were added
1140 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1142 * The functions getresuid, getresgid, setresuid, and setresgid, which
1143 have long been available on Linux, are now declared in <unistd.h>
1144 and are now also available on the Hurd.
1146 * ELF thread-local storage support (TLS) now works on x86-64.
1148 * The new dynamic string token $LIB is expanded in shared library names.
1149 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1151 * Aldy Hernandez contributed complete software floating point support for
1152 PowerPC machines with no FPU.
1154 * fexecve is implemented on Linux.
1156 * The `btowc' function should work at least twice as fast due to
1157 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1159 * With approriate thread add-ons cancelable functions are now implemented
1160 in libc.so as well. No need to call the function in libpthread. This
1161 change allowed to finally disable the incorrect and expensive handling
1162 of weak definition in ld.so.
1164 * Yet more PLT entries in libc.so have been removed. We finally arrived
1165 at the bare minimum. Startup times improved appropriately.
1167 * Support for the new Linux/x86 system call interface was added. The
1168 AT_SYSINFO auxiliary vector entry is recognized and handled.
1169 \f
1170 Version 2.3
1172 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1173 charsets.
1175 * iconv (the program and the interface) now accepts empty names (excluding
1176 options like //TRANSLIT) to mean "use charset of current locale".
1178 * localedef can now transliterate characters in strings which are not in
1179 the provided charmap. The information from the input locale is used.
1181 * Prelinking support was added for ELF targets. This requires additional
1182 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1184 * Read-only stdio streams now use mmap to speed up operation by eliminating
1185 copying and buffer underflows. To use add 'm' to the mode string of
1186 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1188 * The malloc functions were completely rewritten by Wolfram Gloger based
1189 on Doug Lea's malloc-2.7.0.c.
1191 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1192 implementation of regex.
1194 * Bruno Haible upgraded the iconv and locale implementation to support
1195 Unicode 3.2.
1197 * Contents of the LC_* and LANG environment variables in the CEN style are
1198 not recognized anymore. It never was used. Change by Ulrich Drepper.
1200 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1201 thread-local storage (TLS) ABI on some platforms.
1202 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1204 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1205 EUC-JISX0213, and TSCII.
1207 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1208 BSD-compatible interface for getting all network interface addresses.
1209 Implementation for IPv4 by Roland McGrath.
1211 * Loading of locale data is faster due to the introduction of a locale
1212 archive. Implemented by Roland McGrath and Ulrich Drepper.
1214 * Startup times are significantly reduced by not using exported functions
1215 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1216 and Ulrich Drepper.
1218 * Steven Munroe contributed a port to PowerPC64/Linux.
1219 \f
1220 Version 2.2.6
1222 * The Hurd now uses the GNU libio implementation of stdio rather than the
1223 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1225 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1226 with the same behavior as the Linux system call of the same name.
1227 \f
1228 Version 2.2.5
1230 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1231 128-bit long double format.
1233 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1234 IBM1161, and IBM1162 charsets.
1236 * Andreas Jaeger contributed a port to x86-64/Linux.
1238 * Peter Bruin contributed a port to PowerPC/Hurd.
1240 * libc functions using I/O streams now can handle wide-oriented streams
1241 as well.
1243 * optimizations in the dynamic linker. Binaries created by recent binutils
1244 versions start up quicker due to reduced time spent on relocations.
1246 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1247 \f
1248 Version 2.2.4
1250 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1251 asinh, atanh, j0 for the 128-bit long double format.
1253 * Bruno Haible updated all the code handling Unicode in some form to
1254 support Unicode 3.1.
1256 * Speed of regex for single-byte locales is back to previous levels.
1257 Patch by Isamu Hasegawa.
1259 * Alpha, SPARC, and IA-64 now also using floating stacks.
1261 * Startup time of internationalized applications greatly improved through
1262 iconv cache. Use iconvconfig to generate the cache file.
1263 Contributed by Ulrich Drepper.
1265 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1266 severe performance problems. Patch by David Mosberger.
1268 * The Hurd port got a lot more functionality like AIO, various stdio
1269 extensions, etc. Mainly done by Roland McGrath.
1271 * mtrace can now lookup symbols in shared libraries.
1272 \f
1273 Version 2.2.3
1275 * Intel's IA-64 math library is largely integrated. It provides fast and
1276 accurate implementatations for most basic and standard math functions
1277 in float, double, and long double format.
1279 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1280 and asin for the 96-bit long double format and asin, log, tan for the
1281 128-bit long double format.
1283 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1284 The basic double functions exist today. Contributed by Abraham Ziv
1285 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1286 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1288 * An asynchronous name lookup library was added. The interface is designed
1289 after POSIX AIO. The proposal was circulated beforehand to get comments.
1290 No negative ones came in. Implemented by Ulrich Drepper.
1292 * Port to S390/64bit contributed by Martin Schwidefsky
1293 <schwidefsky@de.ibm.com>.
1295 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1296 of functions for Linux/IA-64.
1298 * The RPC code is now thread safe. Threads can now use the same service
1299 of different services at the same time. Patch by Eric Norum
1300 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1302 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1303 family of functions for Linux/S390.
1305 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1306 of functions for Linux/x86.
1308 * Port to Linux/CRIS contributed by Axis Communications.
1309 \f
1310 Version 2.2.2
1312 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1313 we can now check for namespace violations and missing declarations. The
1314 result is that almost all headers are now Unix-compliant (as defined in
1315 the upcoming XPG6). The negative side is that some programs might need
1316 corrections, too, if they depend on the incorrect form of the headers in
1317 previous versions which defined too many symbols and included too many
1318 other headers.
1320 * regex now handles multibyte character sets correctly.
1321 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1323 * iconv (the program) does now conform to the upcoming XPG6 and handles
1324 charmaps. Instead of the charset names the path of charmaps can be
1325 provided and the conversion happens based on this data.
1326 Contributed by Ulrich Drepper.
1328 * The locale program now provides detailed information about the installed
1329 locales. While
1331 locale -a
1333 only lists the names of the supported locales
1335 locale -a --verbose
1337 provides details such as country, language, and codeset name.
1338 Contributed by Ulrich Drepper.
1339 \f
1340 Version 2.2.1
1342 * The gencat program now parses the input file according to the charset
1343 selected by the LC_CTYPE category. This is important for stateful
1344 character sets. To make generating catalogs easier there is a way
1345 to overwrite the charset selected by the locale: before the first
1346 message or $ quote line the catalog can contain a line like
1348 $ codeset=ISO-8859-2
1350 to select the charset (ISO-8859-2 in this case).
1352 Implemented by Shinya Hanataka and Ulrich Drepper.
1354 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1355 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1356 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1358 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1359 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1361 * The LANGUAGE environment variable is now ignored unless the locale is
1362 changed from the default "C" locale.
1364 * The usual bug fixes.
1365 \f
1366 Version 2.2
1368 * Greg McGary added runtime support for bounds checking using gcc's
1369 new -fbounded-pointers option. ix86 target is complete. PowerPC
1370 is in progress.
1372 * Thorsten Kukuk added secure mode support to nscd.
1374 * The Berkeley db libraries have been removed.
1376 Related, the nss_db module is now in a separate package since it
1377 obviously requires a database library being available.
1379 * Wide character I/O streams implemented by Ulrich Drepper.
1381 * Functions from the extended socket API added by Ulrich Drepper.
1383 * Functions feenableexcept and fedisableexcept to control the
1384 behaviour of individual exceptions have been added by Andreas Jaeger.
1386 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1388 * The resolver code has been updated from bind 8.2.3-T5B which supports
1389 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1390 and Mark Kettenis.
1392 This change could in some situations effect backward compatibility. Since
1393 now `_res' is a thread-local instead of a global variable, modifying it
1394 in one thread does not have any effect in other threads.
1396 The resolver library was also extended to allow IPv6 as the transport
1397 protocol for the requests. This work was done by Stig Venaas.
1399 * Compatibility code for K&R C compilers has been removed from the
1400 header files. A ISO C compiler is needed to use the library
1401 (conforming to either C89 or C99 standard).
1403 * Complete rewrite of the localedef program to support multibyte character
1404 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1405 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1406 Implemented by Ulrich Drepper.
1408 Bruno Haible significantly improved the generation and use of the data
1409 structures for the wide character tables.
1411 * Plural handling in gettext implemented by Ulrich Drepper.
1413 * The utmp daemon has been removed.
1415 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1417 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1418 and Yutaka Niibe.
1420 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1422 * POSIX barriers implemented by Kaz Kylheku.
1424 * POSIX spawn function family implemented by Ulrich Drepper.
1426 * POSIX spinlocks are now available.
1428 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1430 * the configure option --enable-kernel=X.Y.Z allows to strip out
1431 compatibility for kernel versions before X.Y.Z. This is currently only
1432 implemented for Linux.
1434 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1435 field sin6_scope_id. This means that all programs using IPv6 should be
1436 recompiled. Don't expect binary compatibility with previous glibc
1437 versions.
1439 * various conversion modules for IBM character sets contributed by
1440 Masahide Washizawa.
1442 * IA-64 port by Jes Sorensen and HJ Lu.
1443 \f
1444 Version 2.1.3
1446 * bug fixes
1448 \f
1449 Version 2.1.2
1451 * bug fixes
1453 \f
1454 Version 2.1.1
1456 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1458 * New xdr functions are added; some rpc functions are now 64bit clean.
1460 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1462 * Fixed known incompatibilities with glibc 2.0.
1464 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1466 * Optimized a number of functions (especially the ELF dynamic loader).
1468 * Update timezone data files.
1470 * lots of charmaps corrections
1472 * some new locale definitions and charmaps
1474 \f
1475 Version 2.1
1477 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1478 conform to POSIX member type requirements. Symbol versions have been
1479 adjusted as needed within the library, and for direct use by applications,
1480 but there is potential for problems if third-party libraries use
1481 struct timeval as part of their interface. This does not present
1482 a problem for X and other "essential" system libraries.
1484 * An additional locale model to support C++ Standard Library locale
1485 model and probably more was implemented by Ulrich Drepper.
1487 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1488 symbol level.
1490 * Miles Bader provided the `argp' function family to support hierachical
1491 command line argument parsing, layered on top of getopt.
1493 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1495 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1496 numbers.
1498 * scanf recognizes the %a and %A format for scanning floating point numbers.
1500 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1501 information and interfaces for the available integer types.
1503 * about 130 new math functions were added to implement the ISO C9x math
1504 library.
1506 * the new header <complex.h> contains definitions of the complex math
1507 functions from ISO C 9X.
1509 * the new header <tgmath.h> defines generic macros to use complex or
1510 real valued functions.
1512 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1514 * Andreas Jaeger provided a test suite for the math library.
1516 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1518 * Ulrich Drepper added character set conversion functions (iconv).
1520 * Optimized string functions have been added.
1522 * The localedata addon is now part of glibc.
1524 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1526 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1527 daemon for NSS (nscd).
1529 Missing a better place here are some numbers on improvements. Under
1530 Linux 2.1.125 un-tar-ing the kernel sources takes
1532 user system wall
1534 using local files 12.19s 6.88s 22.91s
1536 using NIS 13.92s 8.91s 26.34s
1538 using NIS & nscd 10.37s 7.34s 25.30s
1540 using NIS+ 27.57s 30.37s 640.46s
1542 using NIS+ & nscd 10.25s 7.83s 26.51s
1544 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1546 Keep in mind that non-namelookup related operations dominate above times.
1547 It was just a common complain that using NIS+ unpacking the kernel is
1548 horribly slow.
1550 [1] The old nscd implementation is not available anymore since it was
1551 distributed with glibc up to version 2.0.98 and thus is now replaced.
1553 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1555 * Mark Kettenis provided a Hesiod NSS module.
1557 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1558 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1560 * rcmd can now handle netgroups (Dick Streefland).
1562 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1563 Bambrough.
1565 * Support for the IPv6 protocol has been added to the socket API, as per the
1566 latest draft standards.
1568 * Support for Linux 2.2 has been added.
1570 * Interface changes relative to the latest 2.0.x release:
1571 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1572 addseverity NEW: Unix98
1573 alphasort64 NEW: LFS
1574 argp_err_exit_status NEW: argp, GNU ext
1575 argp_error NEW: argp, GNU ext
1576 argp_failure NEW: argp, GNU ext
1577 argp_help NEW: argp, GNU ext
1578 argp_parse NEW: argp, GNU ext
1579 argp_program_bug_address NEW: argp, GNU ext
1580 argp_program_version NEW: argp, GNU ext
1581 argp_program_version_hook NEW: argp, GNU ext
1582 argp_state_help NEW: argp, GNU ext
1583 argp_usage NEW: argp, GNU ext
1584 authdes_create NEW: Secure RPC
1585 authdes_getucred NEW: Secure RPC
1586 authdes_pk_create NEW: Secure RPC
1587 backtrace NEW: GNU ext.
1588 backtrace_symbols NEW: GNU ext.
1589 backtrace_symbols_fd NEW: GNU ext.
1590 cacos NEW: ISO C 9x
1591 cacosf NEW: ISO C 9x
1592 cacosh NEW: ISO C 9x
1593 cacoshf NEW: ISO C 9x
1594 cacoshl NEW: ISO C 9x
1595 cacosl NEW: ISO C 9x
1596 capget NEW: kernel
1597 capset NEW: kernel
1598 carg NEW: ISO C 9x
1599 cargf NEW: ISO C 9x
1600 cargl NEW: ISO C 9x
1601 casin NEW: ISO C 9x
1602 casinf NEW: ISO C 9x
1603 casinh NEW: ISO C 9x
1604 casinhf NEW: ISO C 9x
1605 casinhl NEW: ISO C 9x
1606 casinl NEW: ISO C 9x
1607 catan NEW: ISO C 9x
1608 catanf NEW: ISO C 9x
1609 catanh NEW: ISO C 9x
1610 catanhf NEW: ISO C 9x
1611 catanhl NEW: ISO C 9x
1612 catanl NEW: ISO C 9x
1613 cbc_crypt NEW: Secure RPC
1614 ccos NEW: ISO C 9x
1615 ccosf NEW: ISO C 9x
1616 ccosh NEW: ISO C 9x
1617 ccoshf NEW: ISO C 9x
1618 ccoshl NEW: ISO C 9x
1619 ccosl NEW: ISO C 9x
1620 cexp NEW: ISO C 9x
1621 cexpf NEW: ISO C 9x
1622 cexpl NEW: ISO C 9x
1623 cimag NEW: ISO C 9x
1624 cimagf NEW: ISO C 9x
1625 cimagl NEW: ISO C 9x
1626 clearerr_locked REMOVED
1627 clntunix_create NEW: sunrpc ext
1628 clog NEW: ISO C 9x
1629 clog10 NEW: ISO C 9x
1630 clog10f NEW: ISO C 9x
1631 clog10l NEW: ISO C 9x
1632 clogf NEW: ISO C 9x
1633 clogl NEW: ISO C 9x
1634 conj NEW: ISO C 9x
1635 conjf NEW: ISO C 9x
1636 conjl NEW: ISO C 9x
1637 cpow NEW: ISO C 9x
1638 cpowf NEW: ISO C 9x
1639 cpowl NEW: ISO C 9x
1640 cproj NEW: ISO C 9x
1641 cprojf NEW: ISO C 9x
1642 cprojl NEW: ISO C 9x
1643 creal NEW: ISO C 9x
1644 crealf NEW: ISO C 9x
1645 creall NEW: ISO C 9x
1646 creat64 NEW: LFS
1647 csin NEW: ISO C 9x
1648 csinf NEW: ISO C 9x
1649 csinh NEW: ISO C 9x
1650 csinhf NEW: ISO C 9x
1651 csinhl NEW: ISO C 9x
1652 csinl NEW: ISO C 9x
1653 csqrt NEW: ISO C 9x
1654 csqrtf NEW: ISO C 9x
1655 csqrtl NEW: ISO C 9x
1656 ctan NEW: ISO C 9x
1657 ctanf NEW: ISO C 9x
1658 ctanh NEW: ISO C 9x
1659 ctanhf NEW: ISO C 9x
1660 ctanhl NEW: ISO C 9x
1661 ctanl NEW: ISO C 9x
1662 des_setparity NEW: Secure RPC
1663 ecb_crypt NEW: Secure RPC
1664 endutxent NEW: Unix98
1665 exp10 NEW: ISO C 9x
1666 exp10f NEW: ISO C 9x
1667 exp10l NEW: ISO C 9x
1668 exp2 NEW: ISO C 9x
1669 exp2f NEW: ISO C 9x
1670 exp2l NEW: ISO C 9x
1671 fattach NEW: STREAMS
1672 fdetach NEW: STREAMS
1673 fdim NEW: ISO C 9x
1674 fdimf NEW: ISO C 9x
1675 fdiml NEW: ISO C 9x
1676 feclearexcept NEW: ISO C 9x
1677 fegetenv NEW: ISO C 9x
1678 fegetexceptflag NEW: ISO C 9x
1679 fegetround NEW: ISO C 9x
1680 feholdexcept NEW: ISO C 9x
1681 feof_locked REMOVED
1682 feraiseexcept NEW: ISO C 9x
1683 ferror_locked REMOVED
1684 fesetenv NEW: ISO C 9x
1685 fesetexceptflag NEW: ISO C 9x
1686 fesetround NEW: ISO C 9x
1687 fetestexcept NEW: ISO C 9x
1688 feupdateenv NEW: ISO C 9x
1689 fflush_locked REMOVED
1690 ffsl NEW: GNU ext.
1691 ffsll NEW: GNU ext.
1692 fgetpos64 NEW: LFS
1693 fgets_unlocked NEW: GNU ext.
1694 fileno_locked REMOVED
1695 fma NEW: ISO C 9x
1696 fmaf NEW: ISO C 9x
1697 fmal NEW: ISO C 9x
1698 fmax NEW: ISO C 9x
1699 fmaxf NEW: ISO C 9x
1700 fmaxl NEW: ISO C 9x
1701 fmin NEW: ISO C 9x
1702 fminf NEW: ISO C 9x
1703 fminl NEW: ISO C 9x
1704 fmtmsg NEW: Unix98
1705 fopen64 NEW: LFS
1706 fputc_locked REMOVED
1707 fputs_unlocked NEW: GNU ext.
1708 fread_unlocked NEW: GNU ext.
1709 freopen64 NEW: LFS
1710 fseeko NEW: Unix98
1711 fsetpos64 NEW: LFS
1712 fstatfs64 NEW: LFS
1713 fstatvfs NEW: Unix98
1714 fstatvfs64 NEW: LFS
1715 ftello NEW: Unix98
1716 ftello64 NEW: LFS
1717 ftruncate64 NEW: LFS
1718 ftw64 NEW: LFS
1719 fwrite_unlocked NEW: GNU ext.
1720 gai_strerror NEW: IPv6
1721 gamma_r REMOVED
1722 gammaf_r REMOVED
1723 gammal_r REMOVED
1724 getchar_locked REMOVED
1725 getdate NEW: Unix98
1726 getdate_err NEW: Unix98
1727 getdate_r NEW: GNU ext.
1728 getmsg NEW: STREAMS
1729 getnameinfo NEW: IPv6
1730 getnetname NEW: Secure RPC
1731 getpmsg NEW: STREAMS
1732 getpt NEW: Unix98 PTY
1733 getrlimit64 NEW: LFS
1734 getutxent NEW: Unix98
1735 getutxid NEW: Unix98
1736 getutxline NEW: Unix98
1737 glob64 NEW: GNU ext.
1738 globfree64 NEW: GNU ext.
1739 gnu_get_libc_release NEW: GNU ext.
1740 gnu_get_libc_version NEW: GNU ext.
1741 grantpt NEW: Unix98 PTY
1742 host2netname NEW: Secure RPC
1743 iconv NEW: iconv
1744 iconv_close NEW: iconv
1745 iconv_open NEW: iconv
1746 if_freenameindex NEW: IPv6
1747 if_indextoname NEW: IPv6
1748 if_nameindex NEW: IPv6
1749 if_nametoindex NEW: IPv6
1750 in6addr_any NEW: IPv6
1751 in6addr_loopback NEW: IPv6
1752 inet6_isipv4mapped NEW: IPv6
1753 isastream NEW: STREAMS
1754 iswblank NEW: GNU ext.
1755 key_decryptsession NEW: Secure RPC
1756 key_decryptsession_pk NEW: Secure RPC
1757 key_encryptsession NEW: Secure RPC
1758 key_encryptsession_pk NEW: Secure RPC
1759 key_gendes NEW: Secure RPC
1760 key_get_conv NEW: Secure RPC
1761 key_secretkey_is_set NEW: Secure RPC
1762 key_setnet NEW: Secure RPC
1763 key_setsecret NEW: Secure RPC
1764 llrint NEW: ISO C 9x
1765 llrintf NEW: ISO C 9x
1766 llrintl NEW: ISO C 9x
1767 llround NEW: ISO C 9x
1768 llroundf NEW: ISO C 9x
1769 llroundl NEW: ISO C 9x
1770 log2 NEW: ISO C 9x
1771 log2f NEW: ISO C 9x
1772 log2l NEW: ISO C 9x
1773 lrint NEW: ISO C 9x
1774 lrintf NEW: ISO C 9x
1775 lrintl NEW: ISO C 9x
1776 lround NEW: ISO C 9x
1777 lroundf NEW: ISO C 9x
1778 lroundl NEW: ISO C 9x
1779 lseek64 NEW: LFS
1780 makecontext NEW: Unix98
1781 mempcpy NEW: GNU ext.
1782 mmap64 NEW: LFS
1783 moncontrol REMOVED
1784 modify_ldt NEW: kernel
1785 nan NEW: ISO C 9x
1786 nanf NEW: ISO C 9x
1787 nanl NEW: ISO C 9x
1788 nearbyint NEW: ISO C 9x
1789 nearbyintf NEW: ISO C 9x
1790 nearbyintl NEW: ISO C 9x
1791 netname2host NEW: Secure RPC
1792 netname2user NEW: Secure RPC
1793 nexttoward NEW: ISO C 9x
1794 nexttowardf NEW: ISO C 9x
1795 nexttowardl NEW: ISO C 9x
1796 nftw NEW: Unix98
1797 nftw64 NEW: LFS
1798 open64 NEW: LFS
1799 passwd2des NEW: Secure RPC
1800 pow10 NEW: GNU ext.
1801 pow10f NEW: GNU ext.
1802 pow10l NEW: GNU ext.
1803 pread NEW: Unix98
1804 pread64 NEW: LFS
1805 printf_size NEW: GNU ext.
1806 printf_size_info NEW: GNU ext.
1807 profil_counter REMOVED
1808 pthread_mutexattr_getkind_np REPLACED
1809 pthread_mutexattr_setkind_np REPLACED
1810 ptsname NEW: Unix98 PTY
1811 ptsname_r NEW: Unix98 PTY
1812 putc_locked REMOVED
1813 putchar_locked REMOVED
1814 putgrent NEW: GNU ext.
1815 putmsg NEW: STREAMS
1816 putpmsg NEW: STREAMS
1817 pututxline NEW: Unix98
1818 pwrite NEW: Unix98
1819 pwrite64 NEW: LFS
1820 readdir64 NEW: LFS
1821 readdir64_r NEW: LFS
1822 remquo NEW: ISO C 9x
1823 remquof NEW: ISO C 9x
1824 remquol NEW: ISO C 9x
1825 round NEW: ISO C 9x
1826 roundf NEW: ISO C 9x
1827 roundl NEW: ISO C 9x
1828 rtime NEW: GNU ext.
1829 scalbln NEW: ISO C 9x
1830 scalblnf NEW: ISO C 9x
1831 scalblnl NEW: ISO C 9x
1832 scandir64 NEW: LFS
1833 sendfile NEW: kernel
1834 setcontext NEW: Unix98
1835 setrlimit64 NEW: LFS
1836 setutxent NEW: Unix98
1837 sighold NEW: Unix98
1838 sigignore NEW: Unix98
1839 sigqueue NEW: POSIX.1b
1840 sigrelse NEW: Unix98
1841 sigset NEW: POSIX.1b
1842 sigtimedwait NEW: POSIX.1b
1843 sigwaitinfo NEW: POSIX.1b
1844 sincos NEW: GNU ext.
1845 sincosf NEW: GNU ext.
1846 sincosl NEW: GNU ext.
1847 statfs64 NEW: LFS
1848 statvfs NEW: Unix98
1849 statvfs64 NEW: LFS
1850 strcasestr NEW: GNU ext.
1851 strtoimax NEW: ISO C 9x
1852 strtoumax NEW: ISO C 9x
1853 strverscmp NEW: GNU ext.
1854 svcauthdes_stats NEW: Secure RPC
1855 svcunix_create NEW: sunrpc etx
1856 svcunixfd_create NEW: sunrpc ext
1857 swapcontext NEW: Unix98
1858 tcgetsid NEW: Unix98 PTY
1859 tdestroy NEW: GNU ext.
1860 tgamma NEW: ISO C 9x
1861 tgammaf NEW: ISO C 9x
1862 tgammal NEW: ISO C 9x
1863 tmpfile64 NEW: LFS
1864 trunc NEW: ISO C 9x
1865 truncate64 NEW: LFS
1866 truncf NEW: ISO C 9x
1867 truncl NEW: ISO C 9x
1868 umount2 NEW: kernel
1869 unlockpt NEW: Unix98 PTY
1870 updwtmpx NEW: Unix98
1871 user2netname NEW: Secure RPC
1872 utmpxname NEW: Unix98
1873 versionsort NEW: GNU ext.
1874 versionsort64 NEW: GNU ext.
1875 waitid NEW: Unix98
1876 wcscasecmp NEW: GNU ext.
1877 wcsncasecmp NEW: GNU ext.
1878 wcsnlen NEW: GNU ext.
1879 wcstoimax NEW: ISO C 9x
1880 wcstoll NEW: ISO C 9x
1881 wcstoull NEW: ISO C 9x
1882 wcstoumax NEW: ISO C 9x
1883 wcswcs NEW: Unix98
1884 wordexp NEW: POSIX.2
1885 wordfree NEW: POSIX.2
1886 write_profiling REMOVED
1887 xdecrypt NEW: Secure RPC
1888 xdr_authdes_cred NEW: Secure RPC
1889 xdr_authdes_verf NEW: Secure RPC
1890 xdr_cryptkeyarg NEW: Secure RPC
1891 xdr_cryptkeyarg2 NEW: Secure RPC
1892 xdr_cryptkeyres NEW: Secure RPC
1893 xdr_getcredres NEW: Secure RPC
1894 xdr_key_netstarg NEW: Secure RPC
1895 xdr_key_netstres NEW: Secure RPC
1896 xdr_keybuf NEW: Secure RPC
1897 xdr_keystatus NEW: Secure RPC
1898 xdr_netnamestr NEW: Secure RPC
1899 xdr_sizeof NEW: Secure RPC
1900 xdr_unixcred NEW: sunrpc ext
1901 xencrypt NEW: Secure RPC
1902 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1903 \f
1904 Version 2.0.6
1906 * more bug fixes
1908 \f
1909 Version 2.0.5
1911 * more bug fixes
1913 * inet_ntoa is thread-safe
1915 * updwtmp is moved from libutil to libc
1917 * rewrite of cbrt function
1919 * update of timezone data
1920 \f
1921 Version 2.0.4
1923 * more bug fixes
1924 \f
1925 Version 2.0.3
1927 * more bug fixes
1928 \f
1929 Version 2.0.2
1931 * more bug fixes
1933 * add atoll function
1935 * fix complex problems in Berkeley DB code
1937 * fix math functions
1938 \f
1939 Version 2.0.1
1941 * fixed lots of header problems (especially Linux/GNU specific)
1943 * dynamic loader preserves all registers
1945 * Roland McGrath provided support for handling of auxiliary objects in
1946 the ELF dynamic loader.
1948 * support for parallel builds is improved
1949 \f
1950 Version 2.0
1952 * GNU extensions are no longer declared by default. To enable them you
1953 must define the macro `_GNU_SOURCE' in your program or compile with
1954 `-D_GNU_SOURCE'.
1956 * The library has changed from using GNU ld symbol aliases to using weak
1957 symbols where available. The ELF object file format supports weak
1958 symbols; GNU ld also supports weak symbols in the a.out format. (There
1959 is also now support for other GNU ld extensions in ELF. Use the
1960 `--with-elf' option to configure to indicate you have ELF, and
1961 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1962 of many files which contained only symbol aliases, reducing the size of
1963 the source and the compiled library; many other files were renamed to
1964 less cryptic names previously occupied by the symbol alias files.
1965 There is a new header file <elf.h> for programs which operate on
1966 files in the ELF format.
1968 * Converted to Autoconf version 2, so `configure' has more options.
1969 Run `configure --help' to see the details.
1971 * The library can now be configured to build profiling, highly-optimized
1972 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1973 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1974 `configure' enable building these extra libraries. The shared library is
1975 built by default when using both ELF and GNU ld. When shared libraries
1976 are enabled, the new library `-ldl' is available for arbitrary run-time
1977 loading of shared objects; its interface is defined in <dlfcn.h>. The
1978 new header file <link.h> gives access to the internals of the run-time
1979 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1980 application of same name on other systems and it provides information
1981 about dynamically linked binaries.
1983 * The C library now provides the run-time support code for profiling
1984 executables compiled with `-pg'. Programs can control the profiling code
1985 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1986 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1987 the support for this file format was contributed by David Mosberger-Tang.
1989 * The math code has been replaced with a math library based on fdlibm from
1990 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1991 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1992 functions. The math functions now reside in a separate library, so
1993 programs using them will need to use `-lm' their linking commands.
1995 * John C. Bowman contributed optimized ix87 assembler inline functions.
1997 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1998 mechanism similar to that found in Solaris 2. This is now used for the
1999 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2000 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2001 file controls what services are used for each individual database. This
2002 works by loading shared libraries with names specified in `nsswitch.conf',
2003 so service modules can be changed or added at any time without even
2004 relinking any program. Currently there are the file, db, and NIS based
2005 NSS services available.
2007 * The new functions `strtoq' and `strtouq' parse integer values from
2008 strings, like `strtol' and `strtoul', but they return `long long int' and
2009 `unsigned long long int' values, respectively (64-bit quantities).
2011 * The new functions `strtof' and `strtold' parse floating-point values from
2012 strings, like `strtod', but they return `float' and `long double' values,
2013 respectively (on some machines `double' and `long double' are the same).
2015 * Ulrich Drepper has contributed new implementations of the floating-point
2016 printing and reading code used in the `printf' family of functions and
2017 `strtod', `strtof', and `strtold'. These new functions are perfectly
2018 accurate, and much faster than the old ones.
2020 * The implementation of the POSIX locale model was completely rewritten by
2021 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2022 to compile the POSIX locale definition.
2024 * The former dummy implementations of the strcoll and strxfrm function are
2025 now replaced by fully functional code contributed by Ulrich Drepper. The
2026 collation information comes from the POSIX locale definitions.
2028 * The new header <langinfo.h> defines an interface for accessing
2029 various locale-dependent data (using the locale chosen with `setlocale').
2031 * Ulrich Drepper has contributed a new suite of functions for operation on
2032 wide-character and multibyte-character strings, in <wchar.h>;
2033 and classification and case conversion of wide characters, in <wctype.h>.
2034 These new functions are conforming to the ISO C, Amendement 1 specification.
2036 * There is now a second implementation of the standard I/O library available.
2037 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2038 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2040 * You can now use positional parameter specifications in format strings
2041 for the `printf' and `scanf' families of functions. For example,
2042 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2043 ``Number 6, Mr Jones''. This is mainly useful when providing different
2044 format strings for different languages, whose grammars may dictate
2045 different orderings of the values being printed. To support this
2046 feature, the interface for `register_printf_handler' has changed; see
2047 the header file <printf.h> for details.
2049 * The `printf' and `scanf' families of functions now understand a new
2050 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2051 to group numbers as indicated by the locale; for `scanf' and friends, this
2052 says to accept as valid only a number with all the proper grouping
2053 separators in the right places. In the default "C" locale, numbers are
2054 not grouped; but locales for specific countries will define the usual
2055 conventions (i.e. separate thousands with `,' in the US locale).
2057 * The pgrp functions have been regularized, slightly incompatibly but much
2058 less confusingly. The core functions are now `getpgid' and `setpgid',
2059 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2060 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2061 provided for compatibility. There is no longer an incompatible `getpgrp'
2062 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2064 * The new header file <fts.h> and suite of functions simplify programs that
2065 operate on directory trees. This code comes from 4.4 BSD.
2067 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2068 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2069 NSS scheme used in glibc.
2071 * There is a new malloc debugging hook `__memalign_hook'.
2073 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2074 `unsigned int' in <sys/types.h>. These are for compatibility only and
2075 their use is discouraged.
2077 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2078 done differently, so that it works even without GNU ld.
2080 * New function `euidaccess' checks allowed access to a file like `access',
2081 but using the effective IDs instead of the real IDs.
2083 * The time zone data files have been updated for the latest and greatest
2084 local time conventions of the countries of the world.
2086 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2087 see <dirent.h>.
2089 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2090 for formatting floating-point numbers. They are provided only for
2091 compatibility; new programs should use `sprintf' instead. There are
2092 also equivalent function for the `long double' floating-point type and
2093 all functions also exist in a reentrant form.
2095 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2096 functions for maintaining the login-record files (primarily of use to
2097 system programs such as `login'), and convenient functions for
2098 allocating and initializing a pseudo-terminal (pty) device.
2100 * Ulrich Drepper has contributed new support for System V style
2101 shared memory and IPC on systems that support it.
2103 * Ulrich Drepper has contributed several miscellaneous new functions found
2104 in System V: The `hsearch' family of functions provide an effective
2105 implementation of hash tables; `a64l' and `l64a' provide a very simple
2106 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2107 number generator.
2109 * Ulrich Drepper has contributed new reentrant counterparts for the
2110 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2112 * Ulrich Drepper has contributed new, highly-optimized versions of several
2113 string functions for the i486/Pentium family of processors.
2115 * Ulrich Drepper has updated the Linux-specific code, based largely
2116 on work done in Hongjiu Lu's version of GNU libc for Linux.
2117 The GNU library now supports Linux versions 2.0.10 and later,
2118 using the ELF object file format (i[3456]86-*-linux).
2120 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2122 * David Mosberger-Tang and Richard Henderson have ported the C library
2123 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2124 dynamic linking support for ELF/Alpha.
2126 * Richard Henderson contributed several Alpha optimized assembler function
2127 for arithmetic and string handling.
2129 * Ulrich Drepper has contributed a new set of message catalog functions to
2130 support multiple languages using the <libintl.h> interface, for use with
2131 his new package GNU gettext. Translation volunteers have contributed
2132 catalogs of the library's messages in Spanish, German, and Korean.
2134 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2135 program and the `catgets' function for reading the catalog files it
2136 creates. (The <libintl.h> interface is preferred; we include the
2137 <nl_types.h> interface using `catgets' only for source compatibility with
2138 programs already written to use it.)
2140 * New header file <values.h> gives SVID-compatible names for <limits.h>
2141 constants.
2143 * Various new macros, declarations, and small header files for compatibility
2144 with 4.4 BSD.
2146 * New function `group_member' is a convenient way to check if a process has
2147 a given effective group ID.
2149 * When using GCC 2.7 and later, the socket functions are now declared in a
2150 special way so that passing an argument of type `struct sockaddr_in *',
2151 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2152 `struct sockaddr *' type, does not generate a type-clash warning.
2154 * New function `error' declared in header file <error.h> is a convenient
2155 function for printing error messages and optionally exiting; this is the
2156 canonical function used in GNU programs. The new functions `err', `warn',
2157 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2158 doing the same thing.
2160 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2161 POSIX.2 `glob' function to do ~ and {...} expansion.
2163 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2164 `clearenv' which is used in POSIX.9 is also available.
2166 * New function `getsid' returns session ID number on systems that support it.
2168 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2169 files <db.h> and <mpool.h> provide a rich set of functions for several
2170 types of simple databases stored in memory and in files, and <ndbm.h> is
2171 an old `ndbm'-compatible interface using the `db' functions. Link with
2172 `-ldb' to get these functions.
2174 * New macro `strdupa' copies a string like `strdup', but uses local stack
2175 space from `alloca' instead of dynamic heap space from `malloc'.
2177 * New function `strnlen' is like `strlen' but searches only a given maximum
2178 number of characters for the null terminator. `stpncpy', `strndup' and
2179 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2180 function.
2182 * New function `statfs' in header <sys/statfs.h>.
2184 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2185 provide convenient functions for operating on blocks of null-terminated
2186 strings.
2188 * A new suite of functions in <utmp.h> handle all the details of reading
2189 and writing the utmp file.
2191 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2192 Thorsten Kukuk.
2194 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2195 completely POSIX compliant and also implemented the extended functionality
2196 to handle alternate digit representation and alternate era date formats.
2198 * Ulrich Drepper provided an implementation of the `strptime' function
2199 defined in XPG4.2 which transforms a string into a `struct tm' value.
2201 * Paul Eggert provided the tzselect shell script as part of the timezone
2202 code. The shell script makes it easy to select the correct timezone
2203 specification.
2205 * The implementation of the malloc family of functions is completely replaced
2206 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2207 The implementation uses the mmap function (if available) and it is
2208 optimized for the use in multi threaded programs.
2210 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2211 functions. This new functionality is usable by specifying a special
2212 salt string and it is compatible with implementation on *BSD systems.
2214 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2215 `getsubopt' to handle second level command line options, `bsd_signal'
2216 to access BSD style `signal' functionality, the obsolete `regexp' style
2217 expression matcher.
2219 * the `lchown' function is available on system which support this
2220 functionality.
2222 * The implementation of the shadow password handling function was contributed
2223 by Ulrich Drepper.
2225 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2227 * POSIX.1g support was added. The <sys/select.h> header is available,
2228 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2229 implementation of `getaddrinfo'.
2230 \f
2231 Version 1.09
2233 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2235 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2236 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2238 * The new function `daemon' from 4.4 BSD is useful for server programs that
2239 want to put themselves in the background.
2241 * Joel Sherrill has contributed support for several standalone boards that
2242 run without an operating system.
2244 * `printf', `scanf' and friends now accept a `q' type modifier for long
2245 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2247 * All of the code taken from BSD (notably most of the math and networking
2248 routines) has been updated from the BSD 4.4-Lite release.
2250 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2252 * The new functions `getdomainname' and `setdomainname' fetch or change the
2253 YP/NIS domain name. These are system calls which exist on systems which
2254 have YP (aka NIS).
2256 * The time zone data files have been updated for the latest international
2257 conventions.
2259 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2260 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2261 \f
2262 Version 1.08
2264 * The C library now includes support for Sun RPC, from Sun's free
2265 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2266 are included. (There is still no support for YP.)
2268 * Tom Quinn has contributed a port of the C library to SGI machines running
2269 Irix 4 (mips-sgi-irix4).
2271 * The new `lockf' function is a simplified interface to the locking
2272 facilities of `fcntl', included for compatibility.
2274 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2276 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2278 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2279 compatibility.
2281 * The error message printed by `assert' for a failed assertion now includes
2282 the name of the program (if using GNU ld) and the name of the calling
2283 function (with versions of GCC that support this).
2285 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2287 * The library now includes the <sys/mman.h> header file and memory
2288 management functions `mmap', `munmap', `mprotect', `msync', and
2289 `madvise', on systems that support those facilities.
2291 * The interface for `mcheck' has changed slightly: the function called to
2292 abort the program when an allocation inconsistency is detected now takes
2293 an argument that indicates the type of failure. The new function
2294 `mprobe' lets you request a consistency check for a particular block at
2295 any time (checks are normally done only when you call `free' or `realloc'
2296 on a block).
2298 * It is now possible to easily cross-compile the C library, building on one
2299 system a library to run on another machine and/or operating system. All
2300 you need to do is set the variable `HOST_CC' in `configparms' to the
2301 native compiler for programs to run on the machine you are building on (a
2302 few generator programs are used on Unix systems); set `CC' to the
2303 cross-compiler.
2305 * The new function `fexecve' (only implemented on the GNU system) executes
2306 a program file given a file descriptor already open on the file.
2307 \f
2308 Version 1.07
2310 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2311 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2313 * You can set the variable `libprefix' in `configparms' to specify a prefix
2314 to be prepended to installed library files; this makes it easy to install
2315 the GNU C library to be linked as `-lgnuc' or whatever.
2317 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2318 copies a limited number of characters from a string, and returns the
2319 address of the last character written.
2321 * You no longer need to check for whether the installed `stddef.h' is
2322 compatible with the GNU C library. configure now checks for you.
2324 * You can now define a per-stream `fileno' function to convert the
2325 stream's cookie into an integral file descriptor.
2327 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2328 allocates zero bytes of storage, and returns a unique pointer which
2329 you can pass to `realloc' or `free'. The behavior is undefined if
2330 you dereference this pointer.
2332 * The C library now runs on Sony NEWS m68k machines running either
2333 NewsOS 3 or NewsOS 4.
2335 * The new `syscall' function is a system-dependent primitive function
2336 for invoking system calls. It has the canonical behavior on Unix
2337 systems, including unreliable return values for some calls (such as
2338 `pipe', `fork' and `getppid').
2340 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2341 to `EAGAIN', which is the preferred name. On systems whose kernels
2342 use two distinct codes, the C library now translates EWOULDBLOCK to
2343 EAGAIN in every system call function.
2344 \f
2345 Version 1.06
2347 * The GNU C Library Reference Manual is now distributed with the library.
2348 `make dvi' will produce a DVI file of the printed manual.
2349 `make info' will produce Info files that you can read on line using C-h i
2350 in Emacs or the `info' program.
2351 Please send comments on the manual to bug-glibc-manual@gnu.org.
2353 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2355 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2357 * Jason Merrill has contributed a port to the Sequent Symmetry running
2358 Dynix version 3 (i386-sequent-dynix).
2360 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2361 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2363 * New function `memory_warnings' lets you arrange to get warnings when
2364 malloc is running out of memory to allocate, like Emacs gives you.
2366 * The C library now contains the relocating allocator used in Emacs 19 for
2367 its editing buffers. This allocator (ralloc) minimizes allocation
2368 overhead and fragmentation by moving allocated regions around whenever it
2369 needs to. You always refer to a ralloc'd region with a "handle" (a
2370 pointer to a pointer--an object of type `void **').
2372 * There is a new `printf' format: `%m' gives you the string corresponding
2373 to the error code in `errno'.
2375 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2376 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2377 pass, the `a' modifier says to fill in a `char **' you pass with a
2378 malloc'd string.
2380 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2381 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2382 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2384 * `mkstemp' is a traditional Unix function to atomically create and open a
2385 uniquely-named temporary file.
2386 \f
2387 Version 1.05
2389 * The standard location for the file that says what the local timezone is
2390 has changed again. It is now `/usr/local/etc/localtime' (or more
2391 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2393 * The distribution no longer contains any files with names longer than 14
2394 characters.
2396 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2397 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2399 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2400 \f
2401 Version 1.04
2403 * The configuration process has changed quite a bit. The `configure'
2404 script is now used just like the configuration scripts for other GNU
2405 packages. The `sysdeps' directory hierarchy is much rearranged.
2406 The file `INSTALL' explains the new scheme in detail.
2408 * The header files no longer need to be processed into ANSI C and
2409 traditional C versions. There is just one set of files to install, and
2410 it will work with ANSI or old C compilers (including `gcc -traditional').
2412 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2413 MIPS DECStation running Ultrix 4.
2415 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2416 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2417 made itself into a shared library.
2419 * Yet further improved support for the i386, running 4.3 BSD-like systems
2420 (such as Mach 3 with the Unix single-server), or System V.
2422 * New function `strncasecmp' to do case-insensitive string comparison
2423 with limited length.
2425 * New function `strsep' is a reentrant alternative to `strtok'.
2427 * New functions `scandir' and `alphasort' for searching directories.
2429 * New function `setenv' is a better interface to `putenv'.
2431 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2432 function for traversing a directory tree.
2434 * The GNU obstack package is now also part of the C library.
2435 The new function `open_obstack_stream' creates a stdio stream that
2436 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2437 formatted output directly to an obstack.
2439 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2440 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2442 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2444 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2445 things to your strings.
2447 * There are some new test programs: test-fseek, testmb, and testrand.
2449 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2450 These ports are not finished, but are a good starting place for really
2451 supporting those systems.
2453 * `/etc/localtime' is now the standard location for the file that says what
2454 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2455 This follows the general principle that `/etc' is the place for all local
2456 configuration files.
2458 * The C library header files now use `extern "C"' when used by the C++
2459 compiler, so the C library should now work with C++ code.
2461 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2462 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2463 in <strings.h>.)
2465 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2466 function which uses the `merge sort' algorithm, and is said to be
2467 significantly faster than the old GNU `qsort' function. Merge sort is
2468 now the standard `qsort' function. The new algorithm can require a lot
2469 of temporary storage; so, the old sorting function is called when the
2470 required storage is not available.
2472 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2473 provides the Unix `crypt' function, plus some other entry points.
2475 * The code and header files taken from 4.4 BSD have been updated with the
2476 latest files released from Berkeley.
2477 \f
2478 ----------------------------------------------------------------------
2479 Copyright information:
2481 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2483 Permission is granted to anyone to make or distribute verbatim copies
2484 of this document as received, in any medium, provided that the
2485 copyright notice and this permission notice are preserved,
2486 thus giving the recipient permission to redistribute in turn.
2488 Permission is granted to distribute modified versions
2489 of this document, or of portions of it,
2490 under the above conditions, provided also that they
2491 carry prominent notices stating who last changed them.
2492 \f
2493 Local variables:
2494 version-control: never
2495 fill-column: 76
2496 End: