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.
10 * The following bugs are resolved with this release:
12 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
13 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16198, 16284,
14 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516, 16532,
15 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609, 16610,
16 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642, 16648,
17 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695, 16701,
18 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740, 16743,
19 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796, 16799,
20 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854, 16876,
21 16877, 16878, 16882, 16885, 16888, 16890, 16912, 16915, 16916, 16917,
22 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965, 16966, 16967,
23 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031, 17042, 17048,
24 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079, 17084, 17086,
25 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153.
27 * Support for file description locks is added to systems running the
28 Linux kernel. The standard file locking interfaces are extended to
29 operate on file descriptions, not file descriptors, via the use of
30 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
31 are associated with an open file instead of a process.
33 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
35 * The minimum Linux kernel version that this version of the GNU C Library
36 can be used with is 2.6.32.
38 * Running the testsuite no longer terminates as soon as a test fails.
39 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
40 with PASS or FAIL lines for individual tests. A summary of the results is
41 printed, including a list of failing lists, and "make check" exits with
42 error status if there were any unexpected failures. "make check
43 stop-on-test-failure=y" may be used to keep the old behavior.
45 * The am33 port, which had not worked for several years, has been removed
48 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
49 supported; they now act the same as _DEFAULT_SOURCE (but generate a
50 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
51 conflicted with POSIX (support for which was removed in 2.19), the
52 interfaces those macros enabled remain available when compiling with
53 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
56 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
58 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
59 This may improve lock scaling of existing programs on TX capable systems.
60 The lock elision code is only built with --enable-lock-elision=yes and
61 then requires a GCC version supporting the TX builtins. With lock elision
62 default mutexes are elided via __builtin_tbegin, if the cpu supports
63 transactions. By default lock elision is not enabled and the elision code
66 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
67 copy the path argument. This allowed programs to cause posix_spawn to
68 deference a dangling pointer, or use an unexpected pathname argument if
69 the string was modified after the posix_spawn_file_actions_addopen
72 * All supported architectures now use the main glibc sysdeps directory
73 instead of some being in a separate "ports" directory (which was
74 distributed separately before glibc 2.17).
76 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
77 On configurations that support it (all Linux configurations), it's now
78 used regardless of the --enable-add-ons switch to configure. It is no
79 longer possible to build such configurations without pthreads support.
81 * Locale names, including those obtained from environment variables (LANG
82 and the LC_* variables), are more tightly checked for proper syntax.
83 setlocale will now fail (with EINVAL) for locale names that are overly
84 long, contain slashes without starting with a slash, or contain ".." path
85 components. (CVE-2014-0475) Previously, some valid locale names were
86 silently replaced with the "C" locale when running in AT_SECURE mode
87 (e.g., in a SUID program). This is no longer necessary because of the
92 * The following bugs are resolved with this release:
94 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
95 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
96 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
97 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
98 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
99 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
100 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
101 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
102 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
103 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
104 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
105 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
106 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
107 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
108 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
109 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
110 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
111 16431, 16453, 16474, 16506, 16510, 16529
113 * Slovenian translations for glibc messages have been contributed by the
114 Translation Project's Slovenian team of translators.
116 * The public headers no longer use __unused nor __block. This change is to
117 support compiling programs that are derived from BSD sources and use
118 __unused internally, and to support compiling with Clang's -fblock
119 extension which uses __block.
121 * CVE-2012-4412 The strcoll implementation caches indices and rules for
122 large collation sequences to optimize multiple passes. This cache
123 computation may overflow for large collation sequences and may cause a
124 stack or buffer overflow. This is now fixed to use a slower algorithm
125 which does not use a cache if there is an integer overflow.
127 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
128 rules for large collation sequences to optimize multiple passes and falls
129 back to alloca if malloc fails, resulting in a possible stack overflow.
130 The implementation now falls back to an uncached collation sequence lookup
133 * CVE-2013-4788 The pointer guard used for pointer mangling was not
134 initialized for static applications resulting in the security feature
135 being disabled. The pointer guard is now correctly initialized to a
136 random value for static applications. Existing static applications need
137 to be recompiled to take advantage of the fix (bug 15754).
139 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
140 to the d_name member of struct dirent, or omit the terminating NUL
141 character. (Bugzilla #14699).
143 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
144 aligned_alloc functions could allocate too few bytes or corrupt the
145 heap when passed very large allocation size values (Bugzilla #15855,
148 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
149 for AF_INET6 has been fixed (Bugzilla #16072).
151 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
152 pap_CW, quz_PE, the_NP.
154 * Substantially revised locales: gd_GB, ht_HT
156 * The LC_ADDRESS field was updated to support country_car for almost all
159 * ISO 1427 definitions were updated.
161 * ISO 3166 definitions were updated.
163 * The localedef utility now supports --big-endian and --little-endian
164 command-line options to generate locales for a different system from that
165 for which the C library was built.
167 * Binary locale files now only depend on the endianness of the system for
168 which they are generated and not on other properties of that system. As a
169 consequence, binary files generated with new localedef may be incompatible
170 with old versions of the GNU C Library, and binary files generated with
171 old localedef may be incompatible with this version of the GNU C Library,
172 in the following circumstances:
174 + Locale files may be incompatible on m68k systems.
176 + Locale archive files (but not separate files for individual locales) may
177 be incompatible on systems where plain "char" is signed.
179 * The configure option --disable-versioning has been removed. Builds with
180 --disable-versioning had not worked for several years.
182 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
183 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
185 * SystemTap probes for malloc have been introduced.
187 * SystemTap probes for slow multiple precision fallback paths of
188 transcendental functions have been introduced.
190 * Support for powerpc64le has been added.
192 * The soft-float powerpc port now supports e500 processors.
194 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
196 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
197 set of header declarations that are enabled by default, even when other
198 feature test macros or compiler options such as -std=c99 would otherwise
199 disable some of those declarations.
201 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
202 conflict with POSIX. The libbsd-compat library (which was a dummy library
203 that did nothing) has also been removed.
205 * Preliminary documentation about Multi-Thread, Async-Signal and
206 Async-Cancel Safety has been added.
208 * Change of ABI data structures for s390 and s390x:
209 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
210 allow for future hardware extensions. All library functions that accept or
211 return these structures were versioned in order to provide backwards
212 compatibility with existing code. However, not all cases can be handled
213 with interface versioning. If an application embeds either structure into
214 another structure and that structure is passed to another compilation unit
215 which expects the newer larger-sized object then any access to the new
216 fields will result in undefined behaviour. Similarly any access to fields
217 that were moved by the enlarging of the structures will cause undefined
218 behaviour. To fix the undefined behaviour all objects that are part of the
219 final in-memory image must agree on the size of structures, and this may
220 require recompilation.
224 * The following bugs are resolved with this release:
226 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
227 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
228 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
229 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
230 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
231 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
232 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
233 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
234 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
235 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
236 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
237 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
238 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
241 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
242 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
243 Distributions can re-enable building and using pt_chown via the new configure
244 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
245 considerable security risks and should only be used if the distribution
246 understands and accepts the risks.
248 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
251 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
252 fixed (Bugzilla #15330).
254 * Add support for calling C++11 thread_local object destructors on thread
255 and program exit. This needs compiler support for offloading C++11
256 destructor calls to glibc.
258 * Improved worst case performance of libm functions with double inputs and
261 * Support for priority inherited mutexes in pthread condition variables on
262 non-x86 architectures.
264 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
266 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
268 * Optimized string functions for ARM. Implemented by Will Newton and
271 * Optimized libm functions for SPARC. Implemented by David S. Miller.
273 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
276 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
277 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
279 * Added a benchmark framework to track performance of functions in glibc.
281 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
282 It is based on draft TS 18661 and currently enabled as a GNU extension.
284 * On Linux, the clock function now uses the clock_gettime system call
285 for improved precision, rather than old times system call.
287 * Added support for version-3 tz format files. This is needed when using
288 the tz database release 2013e or later, and affects a few unusual cases --
289 currently only TZ='America/Godthab' for time stamps after 2037.
291 * Added new API functions pthread_getattr_default_np and
292 pthread_setattr_default_np to get and set the default pthread
293 attributes of a process.
295 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
296 This may improve lock scaling of existing programs on TSX capable systems.
297 When the --enable-lock-elision=yes parameter is specified at configure
298 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
301 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
302 availability). Implemented by Ryan S. Arnold.
304 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
308 * The following bugs are resolved with this release:
310 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
311 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
312 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
313 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
314 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
315 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
316 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
317 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
318 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
319 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
320 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
321 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
322 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
323 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
324 14879, 14889, 14893, 14898, 14914.
326 * Optimization of memcpy for MIPS.
328 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
329 EMFILE has been fixed (Bugzilla #14889).
331 * The add-on ports collection is now distributed in the "ports" subdirectory
332 of the main GNU C Library distribution, rather than separately.
334 * Port to ARM AArch64 contributed by Linaro.
336 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
337 Optimized versions of memcpy, memset, and memcmp added for System z10 and
339 Implemented by Andreas Krebbel.
341 * The new function secure_getenv allows secure access to the environment,
342 returning NULL if running in a SUID/SGID process. This function replaces
343 the internal function __secure_getenv.
345 * SystemTap static probes have been added into the dynamic linker.
346 Implemented by Gary Benson.
348 * Optimizations of string functions strstr, strcasestr and memmem.
349 Implemented by Maxim Kuvyrkov.
351 * The minimum Linux kernel version that this version of the GNU C Library
352 can be used with is 2.6.16.
354 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
355 powerpc POWER7. Implemented by Will Schmidt.
357 * New configure option --disable-nscd builds the C library such that it
358 never attempts to contact the Name Service Caching Daemon (nscd).
359 New configure option --disable-build-nscd avoids building nscd itself;
360 this is the default if --disable-nscd is used.
362 * Improved support for cross-compilation, including cross-testing and
363 bootstrap builds without a previously built glibc.
365 * Several testsuite tests are now able to test multiple IFUNC variants of an
366 interface, rather than just testing the one that would be chooen by
369 * New configure options --with-bugurl and --with-pkgversion, for
370 distributors to use to embed their bug-reporting and package version
371 information in --help and --version output.
373 * The ttyname and ttyname_r functions on Linux now fall back to searching for
374 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
375 allows creation of chroots without the procfs mounted on /proc.
377 * The `crypt' function now fails if passed salt bytes that violate the
378 specification for those values. On Linux, the `crypt' function will
379 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
380 enabled, and fail on encrypted strings using the MD5 or DES algorithm
381 when the mode is enabled.
383 * The `clock_*' suite of functions (declared in <time.h>) is now available
384 directly in the main C library. Previously it was necessary to link with
385 -lrt to use these functions. This change has the effect that a
386 single-threaded program that uses a function such as `clock_gettime' (and
387 is not linked with -lrt) will no longer implicitly load the pthreads
388 library at runtime and so will not suffer the overheads associated with
389 multi-thread support in other code such as the C++ runtime library.
391 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
396 * The following bugs are resolved with this release:
398 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
399 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
400 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
401 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
402 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
403 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
404 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
405 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
406 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
407 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
408 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
409 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
410 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
411 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
412 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
413 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
414 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
415 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
416 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
417 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
418 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
419 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
422 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
423 configuring glibc with:
424 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
425 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
426 Implemented by H.J. Lu.
430 + define static_assert
432 + do not declare gets
434 + declare at_quick_exit and quick_exit also for ISO C11
436 + aligned_alloc. NB: The code is deliberately allows the size parameter
437 to not be a multiple of the alignment. This is a moronic requirement
438 in the standard but it is only a requirement on the caller, not the
443 + uchar.h support added
445 + CMPLX, CMPLXF, CMPLXL added
447 Implemented by Ulrich Drepper.
449 * Support for the IA-64 has been moved to ports.
451 * Remove support for anything but ELF binary format
453 * Checking versions of poll, ppoll added.
454 Implemented by Ulrich Drepper.
456 * More generic and 64-bit performance optimizations to math functions.
457 Implemented by Ulrich Drepper.
459 * New configure option --enable-obsolete-rpc makes the deprecated RPC
460 headers and functions available at compile time as they were before
461 version 2.14. This option will be removed at some time in the future
462 after the TI-RPC library becomes fully sufficient for the needs of
463 existing applications.
465 * Compatibility code for Linux kernel versions before 2.4 has been removed.
466 Note that glibc is not expected to work with any Linux kernel version
469 * New header <sys/auxv.h> and function getauxval allowing easy access to
470 the AT_* key-value pairs passed from the Linux kernel. The header also
471 defines the HWCAP_* bits associated with the AT_HWCAP key.
473 * New locales: mag_IN
475 * New configure option --enable-systemtap builds SystemTap static probes
476 into libc for setjmp and longjmp and into libpthread for various operations.
477 So far the setjmp/longjmp probes and some of the libpthread probes are
478 provided only for i*86 and x86_64.
479 Implemented by Roland McGrath and Rayson Ho.
481 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
483 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
486 * More optimized functions for SPARC. Implemented by David S. Miller.
488 * Improved support for cross-compilation, especially bootstrap builds
489 without a previously built glibc.
491 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
492 Chris Metcalf from Tilera.
494 * Support for the old ARM ABI has been removed from ports. Only the EABI is
495 now supported for ARM processors.
497 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
498 as the name of the dynamic linker, to distinguish it from the
499 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
501 * Support for CRIS has been removed from ports.
503 * A new class of installed header has been documented for low-level
504 platform-specific functionality. PowerPC added the first instance with a
505 function to provide time base register access. Contributed by Tulio
506 Magno Quites Machado Filho.
508 * ix86 configurations now install header files that are consistent with
509 what x86-64 configurations install. These same header files can be used
510 for -m32, -m64, or -mx32 builds.
511 Contributed by H.J. Lu.
513 * Math library bug fixes. A thorough audit of all open math library bugs was
514 conducted by Joseph Myers. Significant progress was made on many math
515 library bugs resulting in more accurate exceptions and function results.
516 Many thanks to all those that contributed including Andreas Jaeger for his
517 patch review and work on the x87 trigonometric instruction issues.
519 * Timezone data is no longer installed. Timezone-related binaries and scripts
520 will continue to be installed. Users should obtain their timezone data from
521 their distribution provider or from the tzdata package at
522 <ftp://munnari.oz.au/pub/>.
526 * The following bugs are resolved with this release:
528 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
529 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
530 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
531 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
532 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
533 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
534 13484, 13506, 13515, 13523, 13524, 13538, 13540
536 * New program pldd to list loaded object of a process
537 Implemented by Ulrich Drepper.
539 * Add nss_db support back to glibc. No more dependency on Berkeley db
540 and support for initgroups lookups.
541 Implemented by Ulrich Drepper.
543 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
544 Contributed by HJ Lu.
546 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
547 Contributed by HJ Lu.
549 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
550 on x86-32 and x86-64.
551 Contributed by Liubov Dmitrieva.
553 * Optimized strchr and strrchr for SSE on x86-32.
554 Contributed by Liubov Dmitrieva.
556 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
557 for x86-64 and x86-32.
558 Contributed by Liubov Dmitrieva.
560 * New interfaces: scandirat, scandirat64
561 Implemented by Ulrich Drepper.
563 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
564 Implemented by Ulrich Drepper.
566 * nscd now also caches the netgroup database.
567 Implemented by Ulrich Drepper.
569 * Integrate libm with gcc's -ffinite-math-only option.
570 Implemented by Ulrich Drepper.
572 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
573 to math functions. Implemented by Ulrich Drepper.
575 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
576 Implemented by Ulrich Drepper.
578 * New Linux interfaces: process_vm_readv, process_vm_writev
580 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
581 Implemented by Ulrich Drepper.
583 * Optimized nearbyint and strcasecmp for PPC.
584 Implemented by Adhemerval Zanella.
586 * New locales: bho_IN, unm_US, es_CU, ta_LK
590 * The following bugs are resolved with this release:
592 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
593 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
594 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
595 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
596 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
597 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
598 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
599 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
600 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
601 12795, 12811, 12813, 12814, 12841
603 * The RPC implementation in libc is obsoleted. Old programs keep working
604 but new programs cannot be linked with the routines in libc anymore.
605 Programs in need of RPC functionality must be linked against TI-RPC.
606 The TI-RPC implementation is IPv6 enabled and there are other benefits.
608 Visible changes of this change include (obviously) the inability to link
609 programs using RPC functions without referencing the TI-RPC library and the
610 removal of the RPC headers from the glibc headers.
611 Implemented by Ulrich Drepper.
613 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
614 syncfs, setns, sendmmsg
616 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
617 yue_HK, lij_IT, mhr_RU
619 * New encodings: CP770, CP771, CP772, CP773, CP774
621 * New program sotruss to trace calls through PLTs
622 Implemented by Ulrich Drepper.
624 * The malloc hook implementation is marked deprecated and will be removed
625 from the default implementation in the next version. The design never
626 worked ever since the introduction of threads. Even programs which do
627 not create threads themselves can use multiple threads created internally.
631 * The following bugs are resolved with this release:
633 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
634 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
635 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
636 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
639 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
641 * POWER7 optimizations: memset, memcmp, strncmp
643 * New optimized string functions for x86-64: strnlen (SSE2),
644 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
645 Implemented by Ulrich Drepper.
649 * The following bugs are resolved with this release:
651 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
652 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
653 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
654 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
655 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
656 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
657 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
658 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
660 * New interfaces: pthread_getname_np, pthread_setname_np
662 * New Linux interface: recvmmsg
664 * STT_GNU_IFUNC implemented for Sparc by David Miller.
666 * The dynamic linker now recognizes supported ABI versions from the
667 EI_ABIVERSION field in the ELF header.
668 Implemented by Ulrich Drepper.
670 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
671 will not be used to fill in password fields in the passwd.byname replies.
672 Instead it is used to synthesize the shadow.byname table, should it be
673 missing. This is a useful mode in some installations involving Solaris.
674 Implemented by Ulrich Drepper.
676 * New locales: kok_IN, sq_MK, cv_RU
680 * The following bugs are resolved with this release:
682 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
683 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
684 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
685 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
686 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
687 10789, 10817, 10823, 10840, 10847
689 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
691 Implemented by Ulrich Drepper.
693 * Checking version of longjmp added that fails if an uninitialized stack
694 frame would be created. Implemented by Ulrich Drepper.
696 * STT_GNU_IFUNC is now supported in static executables.
697 Implemented by H.J. Lu.
699 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
701 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
702 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
703 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
704 Contributed by H.J. Lu.
706 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
707 Implemented by Ulrich Drepper.
709 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
711 Contributed by H.J. Lu.
713 * Support for fma instruction in AVX on x86-64.
714 Implemented by H.J. Lu and Ulrich Drepper.
716 * AVX support in x86-64 auditing support in ld.so.
717 Implemented by H.J. Lu.
719 * STB_GNU_UNIQUE support added.
720 Implemented by Ulrich Drepper.
722 * Implement second fallback mode for optimized DNS lookup for even more
723 broken environments. If two requests from the same port are not
724 handled correctly close the socket and open a new one before sending
725 the second request. The 'single-request-reopen' option in /etc/resolv.conf
726 can be used to select this mode right away, instead of rediscovering the
727 necessity is every process again.
728 Implemented by Ulrich Drepper.
730 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
731 Implemented by Adam Tkac.
733 * Optimized iconv conversions for S390x.
734 Implemented by Andreas Krebbel.
736 * Using condvars with PI mutexes is now more efficient due to kernel
737 support for requeueing to PI futexes. NPTL support added for x86-64.
738 Implemented by Ulrich Drepper.
740 * New locales: ps_AF, my_MM
744 * The following bugs are resolved with this release:
746 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
747 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
748 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
749 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
750 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
752 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
753 Implemented by Ulrich Drepper.
755 * New Linux interfaces: accept4, fallocate, fallocate64.
756 Implemented by Ulrich Drepper.
758 * Correct declarations of string function when used in C++ code. This
759 could lead to compile errors for invalid C++ code.
761 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
764 * New POSIX 2008 interface: psiginfo
765 Implemented by Ulrich Drepper.
767 * New ISO C++1x interfaces: quick_exit, at_quick_exit
768 Implemented by Ulrich Drepper.
770 * Support for selecting between multiple function definitions at runtime
771 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
773 * The libcrypt library can now use the hash function implementations in
774 NSS. Implemented by Ulrich Drepper.
776 * The malloc implementation can be compiled to be less memory efficient
777 but higher performing in multi-threaded programs.
778 Implemented by Ulrich Drepper.
780 * New locales: nan_TW@latin, ks_IN
782 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
783 Implemented by Ulrich Drepper.
785 * Extended printf hook support. It is possible to use user-defined types
786 and extend existing format specifiers.
787 Implemented by Ulrich Drepper.
789 * Handling for group shadow files has been added.
790 Implemented by Ulrich Drepper.
792 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
793 servers (the case, e.g., for some people using the built-in DNS
794 server in ADSL modems/routers). There is a once-per-process timeout
795 in case of a broken server. To avoid it, users can run nscd or put
796 'options single-request' in /etc/resolv.conf.
797 Implemented by Ulrich Drepper.
801 * The following bugs are resolved with this release:
803 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
804 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
805 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
806 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
807 6968, 6974, 6980, 6995, 7008, 7009, 7029
809 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
810 up at the same time. Implemented by Ulrich Drepper.
812 * TLS descriptors for LD and GD on x86 and x86-64.
813 Implemented by Alexandre Oliva.
815 * getaddrinfo now handles DCCP and UDPlite.
816 Implemented by Ulrich Drepper.
818 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
819 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
820 Implemented by Ulrich Drepper.
822 * New implementation of memmem, strstr, and strcasestr which is O(n).
823 Implemented by Eric Blake.
825 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
827 * Implement "e" option for popen to open file descriptor with the
828 close-on-exec flag set. Implemented by Ulrich Drepper.
830 * Implement "b" mode for fmemopen. In this mode writes writes don't
831 implicitly add a NUL byte and seeks from the end of the buffer really
832 use the buffer end, not the string length as the basis.
833 Implemented by Ulrich Drepper.
835 * Many functions, exported and internal, now atomically set the close-on-exec
836 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
838 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
840 Implemented by Pravin Satpute.
842 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
846 * The following bugs are resolved with this release:
848 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
849 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
850 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
851 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
852 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
853 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
854 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
856 * New locales: bo_CN, bo_IN, shs_CA.
858 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
860 * Sorting rules for some Indian languages (Devanagari and Gujarati).
861 Implemented by Pravin Satpute.
863 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
865 * nscd caches now all timeouts for DNS entries
866 Implemented by Ulrich Drepper.
868 * nscd is more efficient and wakes up less often.
869 Implemented by Ulrich Drepper.
871 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
872 vdprintf, and obstack_vprintf.
873 Implemented by Jakub Jelinek.
875 * Faster memset for x86-64.
876 Implemented by Harsha Jagasia and H.J. Lu.
878 * Faster memcpy on x86.
879 Implemented by Ulrich Drepper.
881 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
882 Implemented by Ulrich Drepper.
884 * Faster sqrt and sqrtf implemention for some PPC variants.
885 Implemented by Steven Munroe.
889 * The following bugs are resolved with this release:
891 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
892 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
893 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
894 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
895 5071, 5103, 5104, 5112, 5113, 5184, 5186
897 * More checking functions: fread, fread_unlocked, open*, mq_open.
898 Implemented by Jakub Jelinek and Ulrich Drepper.
900 * Extend fortification to C++. Implemented by Jakub Jelinek.
902 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
903 by not recognizing 'a' as a modifier when those specs are requested.
904 Implemented by Jakub Jelinek.
906 * PPC optimizations to math and string functions.
907 Implemented by Steven Munroe.
909 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
910 options to be passed. Implemented by Ulrich Drepper.
912 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
914 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
915 Implemented by Ulrich Drepper.
917 * Handle private futexes in the NPTL implementation.
918 Implemented by Jakub Jelinek and Ulrich Drepper.
920 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
921 Implemented by Roland McGrath and Ulrich Drepper.
923 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
925 * SHA-256 and SHA-512 based password encryption.
926 Implemented by Ulrich Drepper.
928 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
929 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
932 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
933 Implemented by Ulrich Drepper.
937 * The following bugs are resolved with this release:
939 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
940 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
941 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
942 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
943 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
944 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
945 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
948 * New Linux interfaces: epoll_pwait, sched_getcpu.
950 * New generic interfaces: strerror_l.
952 * nscd can now cache the services database. Implemented by Ulrich Drepper.
956 * The following bugs are resolved with this release:
958 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
959 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
960 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
961 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
962 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
963 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
964 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
965 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
966 3225, 3251, 3252, 3253, 3273
968 * For Linux, the sorting of addresses returned by getaddrinfo now also
969 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
970 Implemented by Ulrich Drepper.
972 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
973 Implemented by Ulrich Drepper.
975 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
977 * New iconv module for MIK. Contributed by Alexander Shopov.
979 * For sites with broken group and/or passwd database, the auto-propagate
980 option of nscd can prevent creating ID lookup entries from the results
981 of a name lookup and vice versa. This usually is no problem but some
982 site might have problems with the default behavior.
983 Implemented by Ulrich Drepper.
985 * Iterating over entire database in NIS can be slow. With the
986 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
987 to trade time for memory. The entire database will be read at once.
988 Implemented by Ulrich Drepper.
990 * The interfaces introduced in RFC 3542 have been implemented by
993 * Support for the new ELF hash table format was added by Ulrich Drepper.
995 * Support for priority inheritance mutexes added by Jakub Jelinek and
998 * Support for priority protected mutexes added by Jakub Jelinek.
1000 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1001 or_IN, csb_PL, fy_NL, sr_ME.
1005 * More overflow detection functions.
1007 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1008 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1010 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1011 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1012 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1013 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1014 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1015 by Masahide Washizawa.
1017 * It is now possible to install audit libraries for the dynamic linker using
1018 LD_AUDIT. Implemented by Ulrich Drepper.
1020 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1021 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1022 For a libc and libpthread that works well on Linux 2.4 kernels, we
1023 recommend using the stable 2.3 branch.
1025 * The new function open_wmemstream acts like open_memstream,
1026 but uses a wchar_t wide character buffer.
1028 * The new function ppoll is an improved version of poll, similar to pselect.
1030 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1031 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1032 renameat, unlinkat, linkat, symlinkat, readlinkat.
1034 * New Linux kernel system calls: unshare,
1035 inotify_init, inotify_add_watch, inotify_rm_watch.
1037 * The euidaccess function is now also known by the alias eaccess,
1038 for compatibility with some other systems.
1040 * Timezone data updated to 2006b version.
1044 * The following bugs are resolved with this release:
1046 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1047 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1048 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1049 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1050 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1051 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1053 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1055 * As of this release, GCC 4 can be used to compile the C Library.
1057 * Timezone data updated to 2005m version.
1061 * The following bugs are resolved with this release:
1063 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1064 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1065 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1066 777, 787, 821, 822, 823, 825
1068 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1072 * Support for RFC 3678. Real implementations exist only for Linux so far.
1073 Implemented by Ulrich Drepper.
1075 * nscd can now cache entries persistently. Expiring entries are reloaded.
1076 For speedups the cache can be shared in memory with client processes.
1077 Implemented by Ulrich Drepper.
1079 * nscd can now perform SELinux checks.
1080 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1082 * getaddrinfo queries are now cached. Canonical name lookup is performed
1084 Implemented by Ulrich Drepper.
1086 * The nothrow function attribute is used when headers are used by gcc when
1087 compiling C code. This can avoid significant amounts of exception
1090 * The malloc functions perform more error checking and are stricter when
1091 it comes to reacting on errors. The default action is to terminate
1092 the process after showing an error message. Implemented by Ulrich Drepper.
1094 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1095 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1097 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1098 namespaces using the new function dlmopen(). This feature is of course,
1099 like most other dynamic loading functionality, not available in statically
1100 linked applications. Implemented by Ulrich Drepper.
1102 * Low-overhead boundary checking variants of string and some stdio functions
1103 were added. These are to be used in conjunction with a gcc patch by
1104 Jakub Jelinek which adds calls to these functions if possible.
1105 Implemented by Jakub Jelinek and Ulrich Drepper.
1107 * Old code for several operating systems and machine architectures that
1108 have not been in working condition in a long time have been removed from
1109 the main source tree maintained by the GNU C Library's maintainers.
1110 These files are now reside in the separate `ports' source module
1111 that is usable as an add-on when building the library.
1115 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1116 interrogate the dynamic linker, compatible with the Solaris interface.
1118 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1119 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1121 * getifaddrs now uses the netlink interface on Linux to get its information.
1122 Implemented by Thorsten Kukuk.
1124 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1125 Implemented by Ulrich Drepper.
1127 * support for non-executable stacks on x86 has been added. Changes mostly
1130 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1133 * getaddrinfo now performs destination address selection according to
1138 * Thread-safe interfaces for many functions that access locale data
1139 were added in version 2.3, but these features were omitted from NEWS.
1140 Many functions have variants with an `_l' suffix that take a `locale_t'
1141 object as a parameter rather than consulting the current locale.
1142 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1143 create and maintain `locale_t' objects. Additionally, the new function
1144 `uselocale' sets "the current locale" (as used by functions not so
1145 parameterized) set for an individual thread. These features were added
1146 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1148 * The functions getresuid, getresgid, setresuid, and setresgid, which
1149 have long been available on Linux, are now declared in <unistd.h>
1150 and are now also available on the Hurd.
1152 * ELF thread-local storage support (TLS) now works on x86-64.
1154 * The new dynamic string token $LIB is expanded in shared library names.
1155 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1157 * Aldy Hernandez contributed complete software floating point support for
1158 PowerPC machines with no FPU.
1160 * fexecve is implemented on Linux.
1162 * The `btowc' function should work at least twice as fast due to
1163 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1165 * With approriate thread add-ons cancelable functions are now implemented
1166 in libc.so as well. No need to call the function in libpthread. This
1167 change allowed to finally disable the incorrect and expensive handling
1168 of weak definition in ld.so.
1170 * Yet more PLT entries in libc.so have been removed. We finally arrived
1171 at the bare minimum. Startup times improved appropriately.
1173 * Support for the new Linux/x86 system call interface was added. The
1174 AT_SYSINFO auxiliary vector entry is recognized and handled.
1178 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1181 * iconv (the program and the interface) now accepts empty names (excluding
1182 options like //TRANSLIT) to mean "use charset of current locale".
1184 * localedef can now transliterate characters in strings which are not in
1185 the provided charmap. The information from the input locale is used.
1187 * Prelinking support was added for ELF targets. This requires additional
1188 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1190 * Read-only stdio streams now use mmap to speed up operation by eliminating
1191 copying and buffer underflows. To use add 'm' to the mode string of
1192 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1194 * The malloc functions were completely rewritten by Wolfram Gloger based
1195 on Doug Lea's malloc-2.7.0.c.
1197 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1198 implementation of regex.
1200 * Bruno Haible upgraded the iconv and locale implementation to support
1203 * Contents of the LC_* and LANG environment variables in the CEN style are
1204 not recognized anymore. It never was used. Change by Ulrich Drepper.
1206 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1207 thread-local storage (TLS) ABI on some platforms.
1208 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1210 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1211 EUC-JISX0213, and TSCII.
1213 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1214 BSD-compatible interface for getting all network interface addresses.
1215 Implementation for IPv4 by Roland McGrath.
1217 * Loading of locale data is faster due to the introduction of a locale
1218 archive. Implemented by Roland McGrath and Ulrich Drepper.
1220 * Startup times are significantly reduced by not using exported functions
1221 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1224 * Steven Munroe contributed a port to PowerPC64/Linux.
1228 * The Hurd now uses the GNU libio implementation of stdio rather than the
1229 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1231 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1232 with the same behavior as the Linux system call of the same name.
1236 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1237 128-bit long double format.
1239 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1240 IBM1161, and IBM1162 charsets.
1242 * Andreas Jaeger contributed a port to x86-64/Linux.
1244 * Peter Bruin contributed a port to PowerPC/Hurd.
1246 * libc functions using I/O streams now can handle wide-oriented streams
1249 * optimizations in the dynamic linker. Binaries created by recent binutils
1250 versions start up quicker due to reduced time spent on relocations.
1252 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1256 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1257 asinh, atanh, j0 for the 128-bit long double format.
1259 * Bruno Haible updated all the code handling Unicode in some form to
1260 support Unicode 3.1.
1262 * Speed of regex for single-byte locales is back to previous levels.
1263 Patch by Isamu Hasegawa.
1265 * Alpha, SPARC, and IA-64 now also using floating stacks.
1267 * Startup time of internationalized applications greatly improved through
1268 iconv cache. Use iconvconfig to generate the cache file.
1269 Contributed by Ulrich Drepper.
1271 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1272 severe performance problems. Patch by David Mosberger.
1274 * The Hurd port got a lot more functionality like AIO, various stdio
1275 extensions, etc. Mainly done by Roland McGrath.
1277 * mtrace can now lookup symbols in shared libraries.
1281 * Intel's IA-64 math library is largely integrated. It provides fast and
1282 accurate implementatations for most basic and standard math functions
1283 in float, double, and long double format.
1285 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1286 and asin for the 96-bit long double format and asin, log, tan for the
1287 128-bit long double format.
1289 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1290 The basic double functions exist today. Contributed by Abraham Ziv
1291 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1292 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1294 * An asynchronous name lookup library was added. The interface is designed
1295 after POSIX AIO. The proposal was circulated beforehand to get comments.
1296 No negative ones came in. Implemented by Ulrich Drepper.
1298 * Port to S390/64bit contributed by Martin Schwidefsky
1299 <schwidefsky@de.ibm.com>.
1301 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1302 of functions for Linux/IA-64.
1304 * The RPC code is now thread safe. Threads can now use the same service
1305 of different services at the same time. Patch by Eric Norum
1306 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1308 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1309 family of functions for Linux/S390.
1311 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1312 of functions for Linux/x86.
1314 * Port to Linux/CRIS contributed by Axis Communications.
1318 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1319 we can now check for namespace violations and missing declarations. The
1320 result is that almost all headers are now Unix-compliant (as defined in
1321 the upcoming XPG6). The negative side is that some programs might need
1322 corrections, too, if they depend on the incorrect form of the headers in
1323 previous versions which defined too many symbols and included too many
1326 * regex now handles multibyte character sets correctly.
1327 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1329 * iconv (the program) does now conform to the upcoming XPG6 and handles
1330 charmaps. Instead of the charset names the path of charmaps can be
1331 provided and the conversion happens based on this data.
1332 Contributed by Ulrich Drepper.
1334 * The locale program now provides detailed information about the installed
1339 only lists the names of the supported locales
1343 provides details such as country, language, and codeset name.
1344 Contributed by Ulrich Drepper.
1348 * The gencat program now parses the input file according to the charset
1349 selected by the LC_CTYPE category. This is important for stateful
1350 character sets. To make generating catalogs easier there is a way
1351 to overwrite the charset selected by the locale: before the first
1352 message or $ quote line the catalog can contain a line like
1354 $ codeset=ISO-8859-2
1356 to select the charset (ISO-8859-2 in this case).
1358 Implemented by Shinya Hanataka and Ulrich Drepper.
1360 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1361 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1362 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1364 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1365 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1367 * The LANGUAGE environment variable is now ignored unless the locale is
1368 changed from the default "C" locale.
1370 * The usual bug fixes.
1374 * Greg McGary added runtime support for bounds checking using gcc's
1375 new -fbounded-pointers option. ix86 target is complete. PowerPC
1378 * Thorsten Kukuk added secure mode support to nscd.
1380 * The Berkeley db libraries have been removed.
1382 Related, the nss_db module is now in a separate package since it
1383 obviously requires a database library being available.
1385 * Wide character I/O streams implemented by Ulrich Drepper.
1387 * Functions from the extended socket API added by Ulrich Drepper.
1389 * Functions feenableexcept and fedisableexcept to control the
1390 behaviour of individual exceptions have been added by Andreas Jaeger.
1392 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1394 * The resolver code has been updated from bind 8.2.3-T5B which supports
1395 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1398 This change could in some situations effect backward compatibility. Since
1399 now `_res' is a thread-local instead of a global variable, modifying it
1400 in one thread does not have any effect in other threads.
1402 The resolver library was also extended to allow IPv6 as the transport
1403 protocol for the requests. This work was done by Stig Venaas.
1405 * Compatibility code for K&R C compilers has been removed from the
1406 header files. A ISO C compiler is needed to use the library
1407 (conforming to either C89 or C99 standard).
1409 * Complete rewrite of the localedef program to support multibyte character
1410 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1411 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1412 Implemented by Ulrich Drepper.
1414 Bruno Haible significantly improved the generation and use of the data
1415 structures for the wide character tables.
1417 * Plural handling in gettext implemented by Ulrich Drepper.
1419 * The utmp daemon has been removed.
1421 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1423 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1426 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1428 * POSIX barriers implemented by Kaz Kylheku.
1430 * POSIX spawn function family implemented by Ulrich Drepper.
1432 * POSIX spinlocks are now available.
1434 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1436 * the configure option --enable-kernel=X.Y.Z allows to strip out
1437 compatibility for kernel versions before X.Y.Z. This is currently only
1438 implemented for Linux.
1440 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1441 field sin6_scope_id. This means that all programs using IPv6 should be
1442 recompiled. Don't expect binary compatibility with previous glibc
1445 * various conversion modules for IBM character sets contributed by
1448 * IA-64 port by Jes Sorensen and HJ Lu.
1462 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1464 * New xdr functions are added; some rpc functions are now 64bit clean.
1466 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1468 * Fixed known incompatibilities with glibc 2.0.
1470 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1472 * Optimized a number of functions (especially the ELF dynamic loader).
1474 * Update timezone data files.
1476 * lots of charmaps corrections
1478 * some new locale definitions and charmaps
1483 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1484 conform to POSIX member type requirements. Symbol versions have been
1485 adjusted as needed within the library, and for direct use by applications,
1486 but there is potential for problems if third-party libraries use
1487 struct timeval as part of their interface. This does not present
1488 a problem for X and other "essential" system libraries.
1490 * An additional locale model to support C++ Standard Library locale
1491 model and probably more was implemented by Ulrich Drepper.
1493 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1496 * Miles Bader provided the `argp' function family to support hierachical
1497 command line argument parsing, layered on top of getopt.
1499 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1501 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1504 * scanf recognizes the %a and %A format for scanning floating point numbers.
1506 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1507 information and interfaces for the available integer types.
1509 * about 130 new math functions were added to implement the ISO C9x math
1512 * the new header <complex.h> contains definitions of the complex math
1513 functions from ISO C 9X.
1515 * the new header <tgmath.h> defines generic macros to use complex or
1516 real valued functions.
1518 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1520 * Andreas Jaeger provided a test suite for the math library.
1522 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1524 * Ulrich Drepper added character set conversion functions (iconv).
1526 * Optimized string functions have been added.
1528 * The localedata addon is now part of glibc.
1530 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1532 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1533 daemon for NSS (nscd).
1535 Missing a better place here are some numbers on improvements. Under
1536 Linux 2.1.125 un-tar-ing the kernel sources takes
1540 using local files 12.19s 6.88s 22.91s
1542 using NIS 13.92s 8.91s 26.34s
1544 using NIS & nscd 10.37s 7.34s 25.30s
1546 using NIS+ 27.57s 30.37s 640.46s
1548 using NIS+ & nscd 10.25s 7.83s 26.51s
1550 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1552 Keep in mind that non-namelookup related operations dominate above times.
1553 It was just a common complain that using NIS+ unpacking the kernel is
1556 [1] The old nscd implementation is not available anymore since it was
1557 distributed with glibc up to version 2.0.98 and thus is now replaced.
1559 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1561 * Mark Kettenis provided a Hesiod NSS module.
1563 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1564 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1566 * rcmd can now handle netgroups (Dick Streefland).
1568 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1571 * Support for the IPv6 protocol has been added to the socket API, as per the
1572 latest draft standards.
1574 * Support for Linux 2.2 has been added.
1576 * Interface changes relative to the latest 2.0.x release:
1577 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1578 addseverity NEW: Unix98
1579 alphasort64 NEW: LFS
1580 argp_err_exit_status NEW: argp, GNU ext
1581 argp_error NEW: argp, GNU ext
1582 argp_failure NEW: argp, GNU ext
1583 argp_help NEW: argp, GNU ext
1584 argp_parse NEW: argp, GNU ext
1585 argp_program_bug_address NEW: argp, GNU ext
1586 argp_program_version NEW: argp, GNU ext
1587 argp_program_version_hook NEW: argp, GNU ext
1588 argp_state_help NEW: argp, GNU ext
1589 argp_usage NEW: argp, GNU ext
1590 authdes_create NEW: Secure RPC
1591 authdes_getucred NEW: Secure RPC
1592 authdes_pk_create NEW: Secure RPC
1593 backtrace NEW: GNU ext.
1594 backtrace_symbols NEW: GNU ext.
1595 backtrace_symbols_fd NEW: GNU ext.
1597 cacosf NEW: ISO C 9x
1598 cacosh NEW: ISO C 9x
1599 cacoshf NEW: ISO C 9x
1600 cacoshl NEW: ISO C 9x
1601 cacosl NEW: ISO C 9x
1608 casinf NEW: ISO C 9x
1609 casinh NEW: ISO C 9x
1610 casinhf NEW: ISO C 9x
1611 casinhl NEW: ISO C 9x
1612 casinl NEW: ISO C 9x
1614 catanf NEW: ISO C 9x
1615 catanh NEW: ISO C 9x
1616 catanhf NEW: ISO C 9x
1617 catanhl NEW: ISO C 9x
1618 catanl NEW: ISO C 9x
1619 cbc_crypt NEW: Secure RPC
1623 ccoshf NEW: ISO C 9x
1624 ccoshl NEW: ISO C 9x
1630 cimagf NEW: ISO C 9x
1631 cimagl NEW: ISO C 9x
1632 clearerr_locked REMOVED
1633 clntunix_create NEW: sunrpc ext
1635 clog10 NEW: ISO C 9x
1636 clog10f NEW: ISO C 9x
1637 clog10l NEW: ISO C 9x
1647 cprojf NEW: ISO C 9x
1648 cprojl NEW: ISO C 9x
1650 crealf NEW: ISO C 9x
1651 creall NEW: ISO C 9x
1656 csinhf NEW: ISO C 9x
1657 csinhl NEW: ISO C 9x
1660 csqrtf NEW: ISO C 9x
1661 csqrtl NEW: ISO C 9x
1665 ctanhf NEW: ISO C 9x
1666 ctanhl NEW: ISO C 9x
1668 des_setparity NEW: Secure RPC
1669 ecb_crypt NEW: Secure RPC
1670 endutxent NEW: Unix98
1672 exp10f NEW: ISO C 9x
1673 exp10l NEW: ISO C 9x
1677 fattach NEW: STREAMS
1678 fdetach NEW: STREAMS
1682 feclearexcept NEW: ISO C 9x
1683 fegetenv NEW: ISO C 9x
1684 fegetexceptflag NEW: ISO C 9x
1685 fegetround NEW: ISO C 9x
1686 feholdexcept NEW: ISO C 9x
1688 feraiseexcept NEW: ISO C 9x
1689 ferror_locked REMOVED
1690 fesetenv NEW: ISO C 9x
1691 fesetexceptflag NEW: ISO C 9x
1692 fesetround NEW: ISO C 9x
1693 fetestexcept NEW: ISO C 9x
1694 feupdateenv NEW: ISO C 9x
1695 fflush_locked REMOVED
1699 fgets_unlocked NEW: GNU ext.
1700 fileno_locked REMOVED
1712 fputc_locked REMOVED
1713 fputs_unlocked NEW: GNU ext.
1714 fread_unlocked NEW: GNU ext.
1719 fstatvfs NEW: Unix98
1723 ftruncate64 NEW: LFS
1725 fwrite_unlocked NEW: GNU ext.
1726 gai_strerror NEW: IPv6
1730 getchar_locked REMOVED
1732 getdate_err NEW: Unix98
1733 getdate_r NEW: GNU ext.
1735 getnameinfo NEW: IPv6
1736 getnetname NEW: Secure RPC
1737 getpmsg NEW: STREAMS
1738 getpt NEW: Unix98 PTY
1739 getrlimit64 NEW: LFS
1740 getutxent NEW: Unix98
1741 getutxid NEW: Unix98
1742 getutxline NEW: Unix98
1743 glob64 NEW: GNU ext.
1744 globfree64 NEW: GNU ext.
1745 gnu_get_libc_release NEW: GNU ext.
1746 gnu_get_libc_version NEW: GNU ext.
1747 grantpt NEW: Unix98 PTY
1748 host2netname NEW: Secure RPC
1750 iconv_close NEW: iconv
1751 iconv_open NEW: iconv
1752 if_freenameindex NEW: IPv6
1753 if_indextoname NEW: IPv6
1754 if_nameindex NEW: IPv6
1755 if_nametoindex NEW: IPv6
1756 in6addr_any NEW: IPv6
1757 in6addr_loopback NEW: IPv6
1758 inet6_isipv4mapped NEW: IPv6
1759 isastream NEW: STREAMS
1760 iswblank NEW: GNU ext.
1761 key_decryptsession NEW: Secure RPC
1762 key_decryptsession_pk NEW: Secure RPC
1763 key_encryptsession NEW: Secure RPC
1764 key_encryptsession_pk NEW: Secure RPC
1765 key_gendes NEW: Secure RPC
1766 key_get_conv NEW: Secure RPC
1767 key_secretkey_is_set NEW: Secure RPC
1768 key_setnet NEW: Secure RPC
1769 key_setsecret NEW: Secure RPC
1770 llrint NEW: ISO C 9x
1771 llrintf NEW: ISO C 9x
1772 llrintl NEW: ISO C 9x
1773 llround NEW: ISO C 9x
1774 llroundf NEW: ISO C 9x
1775 llroundl NEW: ISO C 9x
1780 lrintf NEW: ISO C 9x
1781 lrintl NEW: ISO C 9x
1782 lround NEW: ISO C 9x
1783 lroundf NEW: ISO C 9x
1784 lroundl NEW: ISO C 9x
1786 makecontext NEW: Unix98
1787 mempcpy NEW: GNU ext.
1790 modify_ldt NEW: kernel
1794 nearbyint NEW: ISO C 9x
1795 nearbyintf NEW: ISO C 9x
1796 nearbyintl NEW: ISO C 9x
1797 netname2host NEW: Secure RPC
1798 netname2user NEW: Secure RPC
1799 nexttoward NEW: ISO C 9x
1800 nexttowardf NEW: ISO C 9x
1801 nexttowardl NEW: ISO C 9x
1805 passwd2des NEW: Secure RPC
1807 pow10f NEW: GNU ext.
1808 pow10l NEW: GNU ext.
1811 printf_size NEW: GNU ext.
1812 printf_size_info NEW: GNU ext.
1813 profil_counter REMOVED
1814 pthread_mutexattr_getkind_np REPLACED
1815 pthread_mutexattr_setkind_np REPLACED
1816 ptsname NEW: Unix98 PTY
1817 ptsname_r NEW: Unix98 PTY
1819 putchar_locked REMOVED
1820 putgrent NEW: GNU ext.
1822 putpmsg NEW: STREAMS
1823 pututxline NEW: Unix98
1827 readdir64_r NEW: LFS
1828 remquo NEW: ISO C 9x
1829 remquof NEW: ISO C 9x
1830 remquol NEW: ISO C 9x
1832 roundf NEW: ISO C 9x
1833 roundl NEW: ISO C 9x
1835 scalbln NEW: ISO C 9x
1836 scalblnf NEW: ISO C 9x
1837 scalblnl NEW: ISO C 9x
1839 sendfile NEW: kernel
1840 setcontext NEW: Unix98
1841 setrlimit64 NEW: LFS
1842 setutxent NEW: Unix98
1844 sigignore NEW: Unix98
1845 sigqueue NEW: POSIX.1b
1846 sigrelse NEW: Unix98
1847 sigset NEW: POSIX.1b
1848 sigtimedwait NEW: POSIX.1b
1849 sigwaitinfo NEW: POSIX.1b
1850 sincos NEW: GNU ext.
1851 sincosf NEW: GNU ext.
1852 sincosl NEW: GNU ext.
1856 strcasestr NEW: GNU ext.
1857 strtoimax NEW: ISO C 9x
1858 strtoumax NEW: ISO C 9x
1859 strverscmp NEW: GNU ext.
1860 svcauthdes_stats NEW: Secure RPC
1861 svcunix_create NEW: sunrpc etx
1862 svcunixfd_create NEW: sunrpc ext
1863 swapcontext NEW: Unix98
1864 tcgetsid NEW: Unix98 PTY
1865 tdestroy NEW: GNU ext.
1866 tgamma NEW: ISO C 9x
1867 tgammaf NEW: ISO C 9x
1868 tgammal NEW: ISO C 9x
1872 truncf NEW: ISO C 9x
1873 truncl NEW: ISO C 9x
1875 unlockpt NEW: Unix98 PTY
1876 updwtmpx NEW: Unix98
1877 user2netname NEW: Secure RPC
1878 utmpxname NEW: Unix98
1879 versionsort NEW: GNU ext.
1880 versionsort64 NEW: GNU ext.
1882 wcscasecmp NEW: GNU ext.
1883 wcsncasecmp NEW: GNU ext.
1884 wcsnlen NEW: GNU ext.
1885 wcstoimax NEW: ISO C 9x
1886 wcstoll NEW: ISO C 9x
1887 wcstoull NEW: ISO C 9x
1888 wcstoumax NEW: ISO C 9x
1890 wordexp NEW: POSIX.2
1891 wordfree NEW: POSIX.2
1892 write_profiling REMOVED
1893 xdecrypt NEW: Secure RPC
1894 xdr_authdes_cred NEW: Secure RPC
1895 xdr_authdes_verf NEW: Secure RPC
1896 xdr_cryptkeyarg NEW: Secure RPC
1897 xdr_cryptkeyarg2 NEW: Secure RPC
1898 xdr_cryptkeyres NEW: Secure RPC
1899 xdr_getcredres NEW: Secure RPC
1900 xdr_key_netstarg NEW: Secure RPC
1901 xdr_key_netstres NEW: Secure RPC
1902 xdr_keybuf NEW: Secure RPC
1903 xdr_keystatus NEW: Secure RPC
1904 xdr_netnamestr NEW: Secure RPC
1905 xdr_sizeof NEW: Secure RPC
1906 xdr_unixcred NEW: sunrpc ext
1907 xencrypt NEW: Secure RPC
1908 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1919 * inet_ntoa is thread-safe
1921 * updwtmp is moved from libutil to libc
1923 * rewrite of cbrt function
1925 * update of timezone data
1939 * add atoll function
1941 * fix complex problems in Berkeley DB code
1943 * fix math functions
1947 * fixed lots of header problems (especially Linux/GNU specific)
1949 * dynamic loader preserves all registers
1951 * Roland McGrath provided support for handling of auxiliary objects in
1952 the ELF dynamic loader.
1954 * support for parallel builds is improved
1958 * GNU extensions are no longer declared by default. To enable them you
1959 must define the macro `_GNU_SOURCE' in your program or compile with
1962 * The library has changed from using GNU ld symbol aliases to using weak
1963 symbols where available. The ELF object file format supports weak
1964 symbols; GNU ld also supports weak symbols in the a.out format. (There
1965 is also now support for other GNU ld extensions in ELF. Use the
1966 `--with-elf' option to configure to indicate you have ELF, and
1967 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1968 of many files which contained only symbol aliases, reducing the size of
1969 the source and the compiled library; many other files were renamed to
1970 less cryptic names previously occupied by the symbol alias files.
1971 There is a new header file <elf.h> for programs which operate on
1972 files in the ELF format.
1974 * Converted to Autoconf version 2, so `configure' has more options.
1975 Run `configure --help' to see the details.
1977 * The library can now be configured to build profiling, highly-optimized
1978 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1979 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1980 `configure' enable building these extra libraries. The shared library is
1981 built by default when using both ELF and GNU ld. When shared libraries
1982 are enabled, the new library `-ldl' is available for arbitrary run-time
1983 loading of shared objects; its interface is defined in <dlfcn.h>. The
1984 new header file <link.h> gives access to the internals of the run-time
1985 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1986 application of same name on other systems and it provides information
1987 about dynamically linked binaries.
1989 * The C library now provides the run-time support code for profiling
1990 executables compiled with `-pg'. Programs can control the profiling code
1991 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1992 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1993 the support for this file format was contributed by David Mosberger-Tang.
1995 * The math code has been replaced with a math library based on fdlibm from
1996 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1997 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1998 functions. The math functions now reside in a separate library, so
1999 programs using them will need to use `-lm' their linking commands.
2001 * John C. Bowman contributed optimized ix87 assembler inline functions.
2003 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2004 mechanism similar to that found in Solaris 2. This is now used for the
2005 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2006 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2007 file controls what services are used for each individual database. This
2008 works by loading shared libraries with names specified in `nsswitch.conf',
2009 so service modules can be changed or added at any time without even
2010 relinking any program. Currently there are the file, db, and NIS based
2011 NSS services available.
2013 * The new functions `strtoq' and `strtouq' parse integer values from
2014 strings, like `strtol' and `strtoul', but they return `long long int' and
2015 `unsigned long long int' values, respectively (64-bit quantities).
2017 * The new functions `strtof' and `strtold' parse floating-point values from
2018 strings, like `strtod', but they return `float' and `long double' values,
2019 respectively (on some machines `double' and `long double' are the same).
2021 * Ulrich Drepper has contributed new implementations of the floating-point
2022 printing and reading code used in the `printf' family of functions and
2023 `strtod', `strtof', and `strtold'. These new functions are perfectly
2024 accurate, and much faster than the old ones.
2026 * The implementation of the POSIX locale model was completely rewritten by
2027 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2028 to compile the POSIX locale definition.
2030 * The former dummy implementations of the strcoll and strxfrm function are
2031 now replaced by fully functional code contributed by Ulrich Drepper. The
2032 collation information comes from the POSIX locale definitions.
2034 * The new header <langinfo.h> defines an interface for accessing
2035 various locale-dependent data (using the locale chosen with `setlocale').
2037 * Ulrich Drepper has contributed a new suite of functions for operation on
2038 wide-character and multibyte-character strings, in <wchar.h>;
2039 and classification and case conversion of wide characters, in <wctype.h>.
2040 These new functions are conforming to the ISO C, Amendement 1 specification.
2042 * There is now a second implementation of the standard I/O library available.
2043 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2044 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2046 * You can now use positional parameter specifications in format strings
2047 for the `printf' and `scanf' families of functions. For example,
2048 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2049 ``Number 6, Mr Jones''. This is mainly useful when providing different
2050 format strings for different languages, whose grammars may dictate
2051 different orderings of the values being printed. To support this
2052 feature, the interface for `register_printf_handler' has changed; see
2053 the header file <printf.h> for details.
2055 * The `printf' and `scanf' families of functions now understand a new
2056 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2057 to group numbers as indicated by the locale; for `scanf' and friends, this
2058 says to accept as valid only a number with all the proper grouping
2059 separators in the right places. In the default "C" locale, numbers are
2060 not grouped; but locales for specific countries will define the usual
2061 conventions (i.e. separate thousands with `,' in the US locale).
2063 * The pgrp functions have been regularized, slightly incompatibly but much
2064 less confusingly. The core functions are now `getpgid' and `setpgid',
2065 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2066 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2067 provided for compatibility. There is no longer an incompatible `getpgrp'
2068 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2070 * The new header file <fts.h> and suite of functions simplify programs that
2071 operate on directory trees. This code comes from 4.4 BSD.
2073 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2074 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2075 NSS scheme used in glibc.
2077 * There is a new malloc debugging hook `__memalign_hook'.
2079 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2080 `unsigned int' in <sys/types.h>. These are for compatibility only and
2081 their use is discouraged.
2083 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2084 done differently, so that it works even without GNU ld.
2086 * New function `euidaccess' checks allowed access to a file like `access',
2087 but using the effective IDs instead of the real IDs.
2089 * The time zone data files have been updated for the latest and greatest
2090 local time conventions of the countries of the world.
2092 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2095 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2096 for formatting floating-point numbers. They are provided only for
2097 compatibility; new programs should use `sprintf' instead. There are
2098 also equivalent function for the `long double' floating-point type and
2099 all functions also exist in a reentrant form.
2101 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2102 functions for maintaining the login-record files (primarily of use to
2103 system programs such as `login'), and convenient functions for
2104 allocating and initializing a pseudo-terminal (pty) device.
2106 * Ulrich Drepper has contributed new support for System V style
2107 shared memory and IPC on systems that support it.
2109 * Ulrich Drepper has contributed several miscellaneous new functions found
2110 in System V: The `hsearch' family of functions provide an effective
2111 implementation of hash tables; `a64l' and `l64a' provide a very simple
2112 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2115 * Ulrich Drepper has contributed new reentrant counterparts for the
2116 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2118 * Ulrich Drepper has contributed new, highly-optimized versions of several
2119 string functions for the i486/Pentium family of processors.
2121 * Ulrich Drepper has updated the Linux-specific code, based largely
2122 on work done in Hongjiu Lu's version of GNU libc for Linux.
2123 The GNU library now supports Linux versions 2.0.10 and later,
2124 using the ELF object file format (i[3456]86-*-linux).
2126 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2128 * David Mosberger-Tang and Richard Henderson have ported the C library
2129 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2130 dynamic linking support for ELF/Alpha.
2132 * Richard Henderson contributed several Alpha optimized assembler function
2133 for arithmetic and string handling.
2135 * Ulrich Drepper has contributed a new set of message catalog functions to
2136 support multiple languages using the <libintl.h> interface, for use with
2137 his new package GNU gettext. Translation volunteers have contributed
2138 catalogs of the library's messages in Spanish, German, and Korean.
2140 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2141 program and the `catgets' function for reading the catalog files it
2142 creates. (The <libintl.h> interface is preferred; we include the
2143 <nl_types.h> interface using `catgets' only for source compatibility with
2144 programs already written to use it.)
2146 * New header file <values.h> gives SVID-compatible names for <limits.h>
2149 * Various new macros, declarations, and small header files for compatibility
2152 * New function `group_member' is a convenient way to check if a process has
2153 a given effective group ID.
2155 * When using GCC 2.7 and later, the socket functions are now declared in a
2156 special way so that passing an argument of type `struct sockaddr_in *',
2157 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2158 `struct sockaddr *' type, does not generate a type-clash warning.
2160 * New function `error' declared in header file <error.h> is a convenient
2161 function for printing error messages and optionally exiting; this is the
2162 canonical function used in GNU programs. The new functions `err', `warn',
2163 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2164 doing the same thing.
2166 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2167 POSIX.2 `glob' function to do ~ and {...} expansion.
2169 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2170 `clearenv' which is used in POSIX.9 is also available.
2172 * New function `getsid' returns session ID number on systems that support it.
2174 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2175 files <db.h> and <mpool.h> provide a rich set of functions for several
2176 types of simple databases stored in memory and in files, and <ndbm.h> is
2177 an old `ndbm'-compatible interface using the `db' functions. Link with
2178 `-ldb' to get these functions.
2180 * New macro `strdupa' copies a string like `strdup', but uses local stack
2181 space from `alloca' instead of dynamic heap space from `malloc'.
2183 * New function `strnlen' is like `strlen' but searches only a given maximum
2184 number of characters for the null terminator. `stpncpy', `strndup' and
2185 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2188 * New function `statfs' in header <sys/statfs.h>.
2190 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2191 provide convenient functions for operating on blocks of null-terminated
2194 * A new suite of functions in <utmp.h> handle all the details of reading
2195 and writing the utmp file.
2197 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2200 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2201 completely POSIX compliant and also implemented the extended functionality
2202 to handle alternate digit representation and alternate era date formats.
2204 * Ulrich Drepper provided an implementation of the `strptime' function
2205 defined in XPG4.2 which transforms a string into a `struct tm' value.
2207 * Paul Eggert provided the tzselect shell script as part of the timezone
2208 code. The shell script makes it easy to select the correct timezone
2211 * The implementation of the malloc family of functions is completely replaced
2212 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2213 The implementation uses the mmap function (if available) and it is
2214 optimized for the use in multi threaded programs.
2216 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2217 functions. This new functionality is usable by specifying a special
2218 salt string and it is compatible with implementation on *BSD systems.
2220 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2221 `getsubopt' to handle second level command line options, `bsd_signal'
2222 to access BSD style `signal' functionality, the obsolete `regexp' style
2225 * the `lchown' function is available on system which support this
2228 * The implementation of the shadow password handling function was contributed
2231 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2233 * POSIX.1g support was added. The <sys/select.h> header is available,
2234 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2235 implementation of `getaddrinfo'.
2239 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2241 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2242 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2244 * The new function `daemon' from 4.4 BSD is useful for server programs that
2245 want to put themselves in the background.
2247 * Joel Sherrill has contributed support for several standalone boards that
2248 run without an operating system.
2250 * `printf', `scanf' and friends now accept a `q' type modifier for long
2251 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2253 * All of the code taken from BSD (notably most of the math and networking
2254 routines) has been updated from the BSD 4.4-Lite release.
2256 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2258 * The new functions `getdomainname' and `setdomainname' fetch or change the
2259 YP/NIS domain name. These are system calls which exist on systems which
2262 * The time zone data files have been updated for the latest international
2265 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2266 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2270 * The C library now includes support for Sun RPC, from Sun's free
2271 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2272 are included. (There is still no support for YP.)
2274 * Tom Quinn has contributed a port of the C library to SGI machines running
2275 Irix 4 (mips-sgi-irix4).
2277 * The new `lockf' function is a simplified interface to the locking
2278 facilities of `fcntl', included for compatibility.
2280 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2282 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2284 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2287 * The error message printed by `assert' for a failed assertion now includes
2288 the name of the program (if using GNU ld) and the name of the calling
2289 function (with versions of GCC that support this).
2291 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2293 * The library now includes the <sys/mman.h> header file and memory
2294 management functions `mmap', `munmap', `mprotect', `msync', and
2295 `madvise', on systems that support those facilities.
2297 * The interface for `mcheck' has changed slightly: the function called to
2298 abort the program when an allocation inconsistency is detected now takes
2299 an argument that indicates the type of failure. The new function
2300 `mprobe' lets you request a consistency check for a particular block at
2301 any time (checks are normally done only when you call `free' or `realloc'
2304 * It is now possible to easily cross-compile the C library, building on one
2305 system a library to run on another machine and/or operating system. All
2306 you need to do is set the variable `HOST_CC' in `configparms' to the
2307 native compiler for programs to run on the machine you are building on (a
2308 few generator programs are used on Unix systems); set `CC' to the
2311 * The new function `fexecve' (only implemented on the GNU system) executes
2312 a program file given a file descriptor already open on the file.
2316 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2317 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2319 * You can set the variable `libprefix' in `configparms' to specify a prefix
2320 to be prepended to installed library files; this makes it easy to install
2321 the GNU C library to be linked as `-lgnuc' or whatever.
2323 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2324 copies a limited number of characters from a string, and returns the
2325 address of the last character written.
2327 * You no longer need to check for whether the installed `stddef.h' is
2328 compatible with the GNU C library. configure now checks for you.
2330 * You can now define a per-stream `fileno' function to convert the
2331 stream's cookie into an integral file descriptor.
2333 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2334 allocates zero bytes of storage, and returns a unique pointer which
2335 you can pass to `realloc' or `free'. The behavior is undefined if
2336 you dereference this pointer.
2338 * The C library now runs on Sony NEWS m68k machines running either
2339 NewsOS 3 or NewsOS 4.
2341 * The new `syscall' function is a system-dependent primitive function
2342 for invoking system calls. It has the canonical behavior on Unix
2343 systems, including unreliable return values for some calls (such as
2344 `pipe', `fork' and `getppid').
2346 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2347 to `EAGAIN', which is the preferred name. On systems whose kernels
2348 use two distinct codes, the C library now translates EWOULDBLOCK to
2349 EAGAIN in every system call function.
2353 * The GNU C Library Reference Manual is now distributed with the library.
2354 `make dvi' will produce a DVI file of the printed manual.
2355 `make info' will produce Info files that you can read on line using C-h i
2356 in Emacs or the `info' program.
2357 Please send comments on the manual to bug-glibc-manual@gnu.org.
2359 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2361 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2363 * Jason Merrill has contributed a port to the Sequent Symmetry running
2364 Dynix version 3 (i386-sequent-dynix).
2366 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2367 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2369 * New function `memory_warnings' lets you arrange to get warnings when
2370 malloc is running out of memory to allocate, like Emacs gives you.
2372 * The C library now contains the relocating allocator used in Emacs 19 for
2373 its editing buffers. This allocator (ralloc) minimizes allocation
2374 overhead and fragmentation by moving allocated regions around whenever it
2375 needs to. You always refer to a ralloc'd region with a "handle" (a
2376 pointer to a pointer--an object of type `void **').
2378 * There is a new `printf' format: `%m' gives you the string corresponding
2379 to the error code in `errno'.
2381 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2382 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2383 pass, the `a' modifier says to fill in a `char **' you pass with a
2386 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2387 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2388 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2390 * `mkstemp' is a traditional Unix function to atomically create and open a
2391 uniquely-named temporary file.
2395 * The standard location for the file that says what the local timezone is
2396 has changed again. It is now `/usr/local/etc/localtime' (or more
2397 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2399 * The distribution no longer contains any files with names longer than 14
2402 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2403 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2405 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2409 * The configuration process has changed quite a bit. The `configure'
2410 script is now used just like the configuration scripts for other GNU
2411 packages. The `sysdeps' directory hierarchy is much rearranged.
2412 The file `INSTALL' explains the new scheme in detail.
2414 * The header files no longer need to be processed into ANSI C and
2415 traditional C versions. There is just one set of files to install, and
2416 it will work with ANSI or old C compilers (including `gcc -traditional').
2418 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2419 MIPS DECStation running Ultrix 4.
2421 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2422 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2423 made itself into a shared library.
2425 * Yet further improved support for the i386, running 4.3 BSD-like systems
2426 (such as Mach 3 with the Unix single-server), or System V.
2428 * New function `strncasecmp' to do case-insensitive string comparison
2429 with limited length.
2431 * New function `strsep' is a reentrant alternative to `strtok'.
2433 * New functions `scandir' and `alphasort' for searching directories.
2435 * New function `setenv' is a better interface to `putenv'.
2437 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2438 function for traversing a directory tree.
2440 * The GNU obstack package is now also part of the C library.
2441 The new function `open_obstack_stream' creates a stdio stream that
2442 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2443 formatted output directly to an obstack.
2445 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2446 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2448 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2450 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2451 things to your strings.
2453 * There are some new test programs: test-fseek, testmb, and testrand.
2455 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2456 These ports are not finished, but are a good starting place for really
2457 supporting those systems.
2459 * `/etc/localtime' is now the standard location for the file that says what
2460 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2461 This follows the general principle that `/etc' is the place for all local
2462 configuration files.
2464 * The C library header files now use `extern "C"' when used by the C++
2465 compiler, so the C library should now work with C++ code.
2467 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2468 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2471 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2472 function which uses the `merge sort' algorithm, and is said to be
2473 significantly faster than the old GNU `qsort' function. Merge sort is
2474 now the standard `qsort' function. The new algorithm can require a lot
2475 of temporary storage; so, the old sorting function is called when the
2476 required storage is not available.
2478 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2479 provides the Unix `crypt' function, plus some other entry points.
2481 * The code and header files taken from 4.4 BSD have been updated with the
2482 latest files released from Berkeley.
2484 ----------------------------------------------------------------------
2485 Copyright information:
2487 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2489 Permission is granted to anyone to make or distribute verbatim copies
2490 of this document as received, in any medium, provided that the
2491 copyright notice and this permission notice are preserved,
2492 thus giving the recipient permission to redistribute in turn.
2494 Permission is granted to distribute modified versions
2495 of this document, or of portions of it,
2496 under the above conditions, provided also that they
2497 carry prominent notices stating who last changed them.
2500 version-control: never
projects / platform / upstream / linaro-glibc.git / blob