| blob | 140f84ad6acf4136ed1c3cfa242e2be5de49a5d5 |
1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
7 \f
8 Version 2.20
10 * The following bugs are resolved with this release:
12 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
13 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16198, 16284, 16315,
14 16348, 16349, 16354, 16357, 16362, 16447, 16516, 16532, 16545, 16564,
15 16574, 16599, 16600, 16609, 16610, 16611, 16613, 16619, 16623, 16629,
16 16632, 16634, 16639, 16642, 16648, 16649, 16670, 16674, 16677, 16680,
17 16681, 16683, 16689, 16695, 16701, 16706, 16707, 16712, 16713, 16714,
18 16724, 16731, 16739, 16740, 16743, 16754, 16758, 16759, 16760, 16770,
19 16786, 16789, 16791, 16796, 16799, 16800, 16815, 16823, 16824, 16831,
20 16838, 16849, 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890,
21 16912, 16915, 16916, 16917, 16922, 16927, 16928, 16932, 16943, 16958,
22 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
23 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17079.
25 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
27 * The minimum Linux kernel version that this version of the GNU C Library
28 can be used with is 2.6.32.
30 * Running the testsuite no longer terminates as soon as a test fails.
31 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
32 with PASS or FAIL lines for individual tests. A summary of the results is
33 printed, including a list of failing lists, and "make check" exits with
34 error status if there were any unexpected failures. "make check
35 stop-on-test-failure=y" may be used to keep the old behavior.
37 * The am33 port, which had not worked for several years, has been removed
38 from ports.
40 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
41 supported; they now act the same as _DEFAULT_SOURCE (but generate a
42 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
43 conflicted with POSIX (support for which was removed in 2.19), the
44 interfaces those macros enabled remain available when compiling with
45 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
46 test macros defined.
48 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
50 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
51 This may improve lock scaling of existing programs on TX capable systems.
52 The lock elision code is only built with --enable-lock-elision=yes and
53 then requires a GCC version supporting the TX builtins. With lock elision
54 default mutexes are elided via __builtin_tbegin, if the cpu supports
55 transactions. By default lock elision is not enabled and the elision code
56 is not built.
58 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
59 copy the path argument. This allowed programs to cause posix_spawn to
60 deference a dangling pointer, or use an unexpected pathname argument if
61 the string was modified after the posix_spawn_file_actions_addopen
62 invocation.
63 \f
64 Version 2.19
66 * The following bugs are resolved with this release:
68 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
69 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
70 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
71 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
72 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
73 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
74 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
75 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
76 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
77 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
78 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
79 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
80 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
81 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
82 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
83 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
84 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
85 16431, 16453, 16474, 16506, 16510, 16529
87 * Slovenian translations for glibc messages have been contributed by the
88 Translation Project's Slovenian team of translators.
90 * The public headers no longer use __unused nor __block. This change is to
91 support compiling programs that are derived from BSD sources and use
92 __unused internally, and to support compiling with Clang's -fblock
93 extension which uses __block.
95 * CVE-2012-4412 The strcoll implementation caches indices and rules for
96 large collation sequences to optimize multiple passes. This cache
97 computation may overflow for large collation sequences and may cause a
98 stack or buffer overflow. This is now fixed to use a slower algorithm
99 which does not use a cache if there is an integer overflow.
101 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
102 rules for large collation sequences to optimize multiple passes and falls
103 back to alloca if malloc fails, resulting in a possible stack overflow.
104 The implementation now falls back to an uncached collation sequence lookup
105 if malloc fails.
107 * CVE-2013-4788 The pointer guard used for pointer mangling was not
108 initialized for static applications resulting in the security feature
109 being disabled. The pointer guard is now correctly initialized to a
110 random value for static applications. Existing static applications need
111 to be recompiled to take advantage of the fix (bug 15754).
113 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
114 to the d_name member of struct dirent, or omit the terminating NUL
115 character. (Bugzilla #14699).
117 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
118 aligned_alloc functions could allocate too few bytes or corrupt the
119 heap when passed very large allocation size values (Bugzilla #15855,
120 #15856, #15857).
122 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
123 for AF_INET6 has been fixed (Bugzilla #16072).
125 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
126 pap_CW, quz_PE, the_NP.
128 * Substantially revised locales: gd_GB, ht_HT
130 * The LC_ADDRESS field was updated to support country_car for almost all
131 supported locales.
133 * ISO 1427 definitions were updated.
135 * ISO 3166 definitions were updated.
137 * The localedef utility now supports --big-endian and --little-endian
138 command-line options to generate locales for a different system from that
139 for which the C library was built.
141 * Binary locale files now only depend on the endianness of the system for
142 which they are generated and not on other properties of that system. As a
143 consequence, binary files generated with new localedef may be incompatible
144 with old versions of the GNU C Library, and binary files generated with
145 old localedef may be incompatible with this version of the GNU C Library,
146 in the following circumstances:
148 + Locale files may be incompatible on m68k systems.
150 + Locale archive files (but not separate files for individual locales) may
151 be incompatible on systems where plain "char" is signed.
153 * The configure option --disable-versioning has been removed. Builds with
154 --disable-versioning had not worked for several years.
156 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
157 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
159 * SystemTap probes for malloc have been introduced.
161 * SystemTap probes for slow multiple precision fallback paths of
162 transcendental functions have been introduced.
164 * Support for powerpc64le has been added.
166 * The soft-float powerpc port now supports e500 processors.
168 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
170 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
171 set of header declarations that are enabled by default, even when other
172 feature test macros or compiler options such as -std=c99 would otherwise
173 disable some of those declarations.
175 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
176 conflict with POSIX. The libbsd-compat library (which was a dummy library
177 that did nothing) has also been removed.
179 * Preliminary documentation about Multi-Thread, Async-Signal and
180 Async-Cancel Safety has been added.
182 * Change of ABI data structures for s390 and s390x:
183 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
184 allow for future hardware extensions. All library functions that accept or
185 return these structures were versioned in order to provide backwards
186 compatibility with existing code. However, not all cases can be handled
187 with interface versioning. If an application embeds either structure into
188 another structure and that structure is passed to another compilation unit
189 which expects the newer larger-sized object then any access to the new
190 fields will result in undefined behaviour. Similarly any access to fields
191 that were moved by the enlarging of the structures will cause undefined
192 behaviour. To fix the undefined behaviour all objects that are part of the
193 final in-memory image must agree on the size of structures, and this may
194 require recompilation.
195 \f
196 Version 2.18
198 * The following bugs are resolved with this release:
200 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
201 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
202 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
203 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
204 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
205 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
206 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
207 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
208 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
209 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
210 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
211 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
212 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
213 15759.
215 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
216 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
217 Distributions can re-enable building and using pt_chown via the new configure
218 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
219 considerable security risks and should only be used if the distribution
220 understands and accepts the risks.
222 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
223 #15078).
225 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
226 fixed (Bugzilla #15330).
228 * Add support for calling C++11 thread_local object destructors on thread
229 and program exit. This needs compiler support for offloading C++11
230 destructor calls to glibc.
232 * Improved worst case performance of libm functions with double inputs and
233 output.
235 * Support for priority inherited mutexes in pthread condition variables on
236 non-x86 architectures.
238 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
240 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
242 * Optimized string functions for ARM. Implemented by Will Newton and
243 Richard Henderson.
245 * Optimized libm functions for SPARC. Implemented by David S. Miller.
247 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
248 Richard Henderson.
250 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
251 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
253 * Added a benchmark framework to track performance of functions in glibc.
255 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
256 It is based on draft TS 18661 and currently enabled as a GNU extension.
258 * On Linux, the clock function now uses the clock_gettime system call
259 for improved precision, rather than old times system call.
261 * Added support for version-3 tz format files. This is needed when using
262 the tz database release 2013e or later, and affects a few unusual cases --
263 currently only TZ='America/Godthab' for time stamps after 2037.
265 * Added new API functions pthread_getattr_default_np and
266 pthread_setattr_default_np to get and set the default pthread
267 attributes of a process.
269 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
270 This may improve lock scaling of existing programs on TSX capable systems.
271 When the --enable-lock-elision=yes parameter is specified at configure
272 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
273 mutexes.
275 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
276 availability). Implemented by Ryan S. Arnold.
278 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
279 \f
280 Version 2.17
282 * The following bugs are resolved with this release:
284 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
285 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
286 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
287 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
288 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
289 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
290 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
291 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
292 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
293 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
294 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
295 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
296 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
297 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
298 14879, 14889, 14893, 14898, 14914.
300 * Optimization of memcpy for MIPS.
302 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
303 EMFILE has been fixed (Bugzilla #14889).
305 * The add-on ports collection is now distributed in the "ports" subdirectory
306 of the main GNU C Library distribution, rather than separately.
308 * Port to ARM AArch64 contributed by Linaro.
310 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
311 Optimized versions of memcpy, memset, and memcmp added for System z10 and
312 zEnterprise z196.
313 Implemented by Andreas Krebbel.
315 * The new function secure_getenv allows secure access to the environment,
316 returning NULL if running in a SUID/SGID process. This function replaces
317 the internal function __secure_getenv.
319 * SystemTap static probes have been added into the dynamic linker.
320 Implemented by Gary Benson.
322 * Optimizations of string functions strstr, strcasestr and memmem.
323 Implemented by Maxim Kuvyrkov.
325 * The minimum Linux kernel version that this version of the GNU C Library
326 can be used with is 2.6.16.
328 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
329 powerpc POWER7. Implemented by Will Schmidt.
331 * New configure option --disable-nscd builds the C library such that it
332 never attempts to contact the Name Service Caching Daemon (nscd).
333 New configure option --disable-build-nscd avoids building nscd itself;
334 this is the default if --disable-nscd is used.
336 * Improved support for cross-compilation, including cross-testing and
337 bootstrap builds without a previously built glibc.
339 * Several testsuite tests are now able to test multiple IFUNC variants of an
340 interface, rather than just testing the one that would be chooen by
341 default.
343 * New configure options --with-bugurl and --with-pkgversion, for
344 distributors to use to embed their bug-reporting and package version
345 information in --help and --version output.
347 * The ttyname and ttyname_r functions on Linux now fall back to searching for
348 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
349 allows creation of chroots without the procfs mounted on /proc.
351 * The `crypt' function now fails if passed salt bytes that violate the
352 specification for those values. On Linux, the `crypt' function will
353 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
354 enabled, and fail on encrypted strings using the MD5 or DES algorithm
355 when the mode is enabled.
357 * The `clock_*' suite of functions (declared in <time.h>) is now available
358 directly in the main C library. Previously it was necessary to link with
359 -lrt to use these functions. This change has the effect that a
360 single-threaded program that uses a function such as `clock_gettime' (and
361 is not linked with -lrt) will no longer implicitly load the pthreads
362 library at runtime and so will not suffer the overheads associated with
363 multi-thread support in other code such as the C++ runtime library.
365 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
366 sat_IN, and szl_PL.
367 \f
368 Version 2.16
370 * The following bugs are resolved with this release:
372 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
373 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
374 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
375 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
376 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
377 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
378 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
379 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
380 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
381 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
382 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
383 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
384 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
385 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
386 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
387 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
388 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
389 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
390 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
391 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
392 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
393 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
394 14277, 14278.
396 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
397 configuring glibc with:
398 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
399 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
400 Implemented by H.J. Lu.
402 * ISO C11 support:
404 + define static_assert
406 + do not declare gets
408 + declare at_quick_exit and quick_exit also for ISO C11
410 + aligned_alloc. NB: The code is deliberately allows the size parameter
411 to not be a multiple of the alignment. This is a moronic requirement
412 in the standard but it is only a requirement on the caller, not the
413 implementation.
415 + timespec_get added
417 + uchar.h support added
419 + CMPLX, CMPLXF, CMPLXL added
421 Implemented by Ulrich Drepper.
423 * Support for the IA-64 has been moved to ports.
425 * Remove support for anything but ELF binary format
427 * Checking versions of poll, ppoll added.
428 Implemented by Ulrich Drepper.
430 * More generic and 64-bit performance optimizations to math functions.
431 Implemented by Ulrich Drepper.
433 * New configure option --enable-obsolete-rpc makes the deprecated RPC
434 headers and functions available at compile time as they were before
435 version 2.14. This option will be removed at some time in the future
436 after the TI-RPC library becomes fully sufficient for the needs of
437 existing applications.
439 * Compatibility code for Linux kernel versions before 2.4 has been removed.
440 Note that glibc is not expected to work with any Linux kernel version
441 before 2.6.
443 * New header <sys/auxv.h> and function getauxval allowing easy access to
444 the AT_* key-value pairs passed from the Linux kernel. The header also
445 defines the HWCAP_* bits associated with the AT_HWCAP key.
447 * New locales: mag_IN
449 * New configure option --enable-systemtap builds SystemTap static probes
450 into libc for setjmp and longjmp and into libpthread for various operations.
451 So far the setjmp/longjmp probes and some of the libpthread probes are
452 provided only for i*86 and x86_64.
453 Implemented by Roland McGrath and Rayson Ho.
455 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
457 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
458 and Will Schmidt.
460 * More optimized functions for SPARC. Implemented by David S. Miller.
462 * Improved support for cross-compilation, especially bootstrap builds
463 without a previously built glibc.
465 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
466 Chris Metcalf from Tilera.
468 * Support for the old ARM ABI has been removed from ports. Only the EABI is
469 now supported for ARM processors.
471 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
472 as the name of the dynamic linker, to distinguish it from the
473 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
475 * Support for CRIS has been removed from ports.
477 * A new class of installed header has been documented for low-level
478 platform-specific functionality. PowerPC added the first instance with a
479 function to provide time base register access. Contributed by Tulio
480 Magno Quites Machado Filho.
482 * ix86 configurations now install header files that are consistent with
483 what x86-64 configurations install. These same header files can be used
484 for -m32, -m64, or -mx32 builds.
485 Contributed by H.J. Lu.
487 * Math library bug fixes. A thorough audit of all open math library bugs was
488 conducted by Joseph Myers. Significant progress was made on many math
489 library bugs resulting in more accurate exceptions and function results.
490 Many thanks to all those that contributed including Andreas Jaeger for his
491 patch review and work on the x87 trigonometric instruction issues.
493 * Timezone data is no longer installed. Timezone-related binaries and scripts
494 will continue to be installed. Users should obtain their timezone data from
495 their distribution provider or from the tzdata package at
496 <ftp://munnari.oz.au/pub/>.
497 \f
498 Version 2.15
500 * The following bugs are resolved with this release:
502 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
503 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
504 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
505 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
506 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
507 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
508 13484, 13506, 13515, 13523, 13524, 13538, 13540
510 * New program pldd to list loaded object of a process
511 Implemented by Ulrich Drepper.
513 * Add nss_db support back to glibc. No more dependency on Berkeley db
514 and support for initgroups lookups.
515 Implemented by Ulrich Drepper.
517 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
518 Contributed by HJ Lu.
520 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
521 Contributed by HJ Lu.
523 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
524 on x86-32 and x86-64.
525 Contributed by Liubov Dmitrieva.
527 * Optimized strchr and strrchr for SSE on x86-32.
528 Contributed by Liubov Dmitrieva.
530 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
531 for x86-64 and x86-32.
532 Contributed by Liubov Dmitrieva.
534 * New interfaces: scandirat, scandirat64
535 Implemented by Ulrich Drepper.
537 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
538 Implemented by Ulrich Drepper.
540 * nscd now also caches the netgroup database.
541 Implemented by Ulrich Drepper.
543 * Integrate libm with gcc's -ffinite-math-only option.
544 Implemented by Ulrich Drepper.
546 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
547 to math functions. Implemented by Ulrich Drepper.
549 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
550 Implemented by Ulrich Drepper.
552 * New Linux interfaces: process_vm_readv, process_vm_writev
554 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
555 Implemented by Ulrich Drepper.
557 * Optimized nearbyint and strcasecmp for PPC.
558 Implemented by Adhemerval Zanella.
560 * New locales: bho_IN, unm_US, es_CU, ta_LK
561 \f
562 Version 2.14
564 * The following bugs are resolved with this release:
566 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
567 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
568 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
569 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
570 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
571 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
572 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
573 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
574 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
575 12795, 12811, 12813, 12814, 12841
577 * The RPC implementation in libc is obsoleted. Old programs keep working
578 but new programs cannot be linked with the routines in libc anymore.
579 Programs in need of RPC functionality must be linked against TI-RPC.
580 The TI-RPC implementation is IPv6 enabled and there are other benefits.
582 Visible changes of this change include (obviously) the inability to link
583 programs using RPC functions without referencing the TI-RPC library and the
584 removal of the RPC headers from the glibc headers.
585 Implemented by Ulrich Drepper.
587 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
588 syncfs, setns, sendmmsg
590 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
591 yue_HK, lij_IT, mhr_RU
593 * New encodings: CP770, CP771, CP772, CP773, CP774
595 * New program sotruss to trace calls through PLTs
596 Implemented by Ulrich Drepper.
598 * The malloc hook implementation is marked deprecated and will be removed
599 from the default implementation in the next version. The design never
600 worked ever since the introduction of threads. Even programs which do
601 not create threads themselves can use multiple threads created internally.
602 \f
603 Version 2.13
605 * The following bugs are resolved with this release:
607 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
608 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
609 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
610 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
611 12378, 12394, 12397
613 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
615 * POWER7 optimizations: memset, memcmp, strncmp
617 * New optimized string functions for x86-64: strnlen (SSE2),
618 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
619 Implemented by Ulrich Drepper.
620 \f
621 Version 2.12
623 * The following bugs are resolved with this release:
625 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
626 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
627 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
628 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
629 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
630 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
631 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
632 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
634 * New interfaces: pthread_getname_np, pthread_setname_np
636 * New Linux interface: recvmmsg
638 * STT_GNU_IFUNC implemented for Sparc by David Miller.
640 * The dynamic linker now recognizes supported ABI versions from the
641 EI_ABIVERSION field in the ELF header.
642 Implemented by Ulrich Drepper.
644 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
645 will not be used to fill in password fields in the passwd.byname replies.
646 Instead it is used to synthesize the shadow.byname table, should it be
647 missing. This is a useful mode in some installations involving Solaris.
648 Implemented by Ulrich Drepper.
650 * New locales: kok_IN, sq_MK, cv_RU
651 \f
652 Version 2.11
654 * The following bugs are resolved with this release:
656 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
657 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
658 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
659 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
660 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
661 10789, 10817, 10823, 10840, 10847
663 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
664 mkostemps64
665 Implemented by Ulrich Drepper.
667 * Checking version of longjmp added that fails if an uninitialized stack
668 frame would be created. Implemented by Ulrich Drepper.
670 * STT_GNU_IFUNC is now supported in static executables.
671 Implemented by H.J. Lu.
673 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
675 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
676 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
677 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
678 Contributed by H.J. Lu.
680 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
681 Implemented by Ulrich Drepper.
683 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
684 strstr, strcasestr.
685 Contributed by H.J. Lu.
687 * Support for fma instruction in AVX on x86-64.
688 Implemented by H.J. Lu and Ulrich Drepper.
690 * AVX support in x86-64 auditing support in ld.so.
691 Implemented by H.J. Lu.
693 * STB_GNU_UNIQUE support added.
694 Implemented by Ulrich Drepper.
696 * Implement second fallback mode for optimized DNS lookup for even more
697 broken environments. If two requests from the same port are not
698 handled correctly close the socket and open a new one before sending
699 the second request. The 'single-request-reopen' option in /etc/resolv.conf
700 can be used to select this mode right away, instead of rediscovering the
701 necessity is every process again.
702 Implemented by Ulrich Drepper.
704 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
705 Implemented by Adam Tkac.
707 * Optimized iconv conversions for S390x.
708 Implemented by Andreas Krebbel.
710 * Using condvars with PI mutexes is now more efficient due to kernel
711 support for requeueing to PI futexes. NPTL support added for x86-64.
712 Implemented by Ulrich Drepper.
714 * New locales: ps_AF, my_MM
715 \f
716 Version 2.10
718 * The following bugs are resolved with this release:
720 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
721 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
722 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
723 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
724 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
726 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
727 Implemented by Ulrich Drepper.
729 * New Linux interfaces: accept4, fallocate, fallocate64.
730 Implemented by Ulrich Drepper.
732 * Correct declarations of string function when used in C++ code. This
733 could lead to compile errors for invalid C++ code.
735 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
736 now in POSIX.
738 * New POSIX 2008 interface: psiginfo
739 Implemented by Ulrich Drepper.
741 * New ISO C++1x interfaces: quick_exit, at_quick_exit
742 Implemented by Ulrich Drepper.
744 * Support for selecting between multiple function definitions at runtime
745 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
747 * The libcrypt library can now use the hash function implementations in
748 NSS. Implemented by Ulrich Drepper.
750 * The malloc implementation can be compiled to be less memory efficient
751 but higher performing in multi-threaded programs.
752 Implemented by Ulrich Drepper.
754 * New locales: nan_TW@latin, ks_IN
756 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
757 Implemented by Ulrich Drepper.
759 * Extended printf hook support. It is possible to use user-defined types
760 and extend existing format specifiers.
761 Implemented by Ulrich Drepper.
763 * Handling for group shadow files has been added.
764 Implemented by Ulrich Drepper.
766 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
767 servers (the case, e.g., for some people using the built-in DNS
768 server in ADSL modems/routers). There is a once-per-process timeout
769 in case of a broken server. To avoid it, users can run nscd or put
770 'options single-request' in /etc/resolv.conf.
771 Implemented by Ulrich Drepper.
772 \f
773 Version 2.9
775 * The following bugs are resolved with this release:
777 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
778 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
779 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
780 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
781 6968, 6974, 6980, 6995, 7008, 7009, 7029
783 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
784 up at the same time. Implemented by Ulrich Drepper.
786 * TLS descriptors for LD and GD on x86 and x86-64.
787 Implemented by Alexandre Oliva.
789 * getaddrinfo now handles DCCP and UDPlite.
790 Implemented by Ulrich Drepper.
792 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
793 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
794 Implemented by Ulrich Drepper.
796 * New implementation of memmem, strstr, and strcasestr which is O(n).
797 Implemented by Eric Blake.
799 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
801 * Implement "e" option for popen to open file descriptor with the
802 close-on-exec flag set. Implemented by Ulrich Drepper.
804 * Implement "b" mode for fmemopen. In this mode writes writes don't
805 implicitly add a NUL byte and seeks from the end of the buffer really
806 use the buffer end, not the string length as the basis.
807 Implemented by Ulrich Drepper.
809 * Many functions, exported and internal, now atomically set the close-on-exec
810 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
812 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
813 Sinhala)
814 Implemented by Pravin Satpute.
816 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
817 \f
818 Version 2.8
820 * The following bugs are resolved with this release:
822 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
823 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
824 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
825 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
826 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
827 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
828 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
830 * New locales: bo_CN, bo_IN, shs_CA.
832 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
834 * Sorting rules for some Indian languages (Devanagari and Gujarati).
835 Implemented by Pravin Satpute.
837 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
839 * nscd caches now all timeouts for DNS entries
840 Implemented by Ulrich Drepper.
842 * nscd is more efficient and wakes up less often.
843 Implemented by Ulrich Drepper.
845 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
846 vdprintf, and obstack_vprintf.
847 Implemented by Jakub Jelinek.
849 * Faster memset for x86-64.
850 Implemented by Harsha Jagasia and H.J. Lu.
852 * Faster memcpy on x86.
853 Implemented by Ulrich Drepper.
855 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
856 Implemented by Ulrich Drepper.
858 * Faster sqrt and sqrtf implemention for some PPC variants.
859 Implemented by Steven Munroe.
860 \f
861 Version 2.7
863 * The following bugs are resolved with this release:
865 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
866 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
867 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
868 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
869 5071, 5103, 5104, 5112, 5113, 5184, 5186
871 * More checking functions: fread, fread_unlocked, open*, mq_open.
872 Implemented by Jakub Jelinek and Ulrich Drepper.
874 * Extend fortification to C++. Implemented by Jakub Jelinek.
876 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
877 by not recognizing 'a' as a modifier when those specs are requested.
878 Implemented by Jakub Jelinek.
880 * PPC optimizations to math and string functions.
881 Implemented by Steven Munroe.
883 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
884 options to be passed. Implemented by Ulrich Drepper.
886 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
888 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
889 Implemented by Ulrich Drepper.
891 * Handle private futexes in the NPTL implementation.
892 Implemented by Jakub Jelinek and Ulrich Drepper.
894 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
895 Implemented by Roland McGrath and Ulrich Drepper.
897 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
899 * SHA-256 and SHA-512 based password encryption.
900 Implemented by Ulrich Drepper.
902 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
903 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
904 yo_NG.
906 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
907 Implemented by Ulrich Drepper.
908 \f
909 Version 2.6
911 * The following bugs are resolved with this release:
913 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
914 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
915 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
916 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
917 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
918 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
919 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
920 4702, 4858
922 * New Linux interfaces: epoll_pwait, sched_getcpu.
924 * New generic interfaces: strerror_l.
926 * nscd can now cache the services database. Implemented by Ulrich Drepper.
927 \f
928 Version 2.5
930 * The following bugs are resolved with this release:
932 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
933 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
934 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
935 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
936 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
937 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
938 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
939 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
940 3225, 3251, 3252, 3253, 3273
942 * For Linux, the sorting of addresses returned by getaddrinfo now also
943 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
944 Implemented by Ulrich Drepper.
946 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
947 Implemented by Ulrich Drepper.
949 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
951 * New iconv module for MIK. Contributed by Alexander Shopov.
953 * For sites with broken group and/or passwd database, the auto-propagate
954 option of nscd can prevent creating ID lookup entries from the results
955 of a name lookup and vice versa. This usually is no problem but some
956 site might have problems with the default behavior.
957 Implemented by Ulrich Drepper.
959 * Iterating over entire database in NIS can be slow. With the
960 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
961 to trade time for memory. The entire database will be read at once.
962 Implemented by Ulrich Drepper.
964 * The interfaces introduced in RFC 3542 have been implemented by
965 Ulrich Drepper.
967 * Support for the new ELF hash table format was added by Ulrich Drepper.
969 * Support for priority inheritance mutexes added by Jakub Jelinek and
970 Ulrich Drepper.
972 * Support for priority protected mutexes added by Jakub Jelinek.
974 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
975 or_IN, csb_PL, fy_NL, sr_ME.
976 \f
977 Version 2.4
979 * More overflow detection functions.
981 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
982 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
984 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
985 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
986 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
987 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
988 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
989 by Masahide Washizawa.
991 * It is now possible to install audit libraries for the dynamic linker using
992 LD_AUDIT. Implemented by Ulrich Drepper.
994 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
995 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
996 For a libc and libpthread that works well on Linux 2.4 kernels, we
997 recommend using the stable 2.3 branch.
999 * The new function open_wmemstream acts like open_memstream,
1000 but uses a wchar_t wide character buffer.
1002 * The new function ppoll is an improved version of poll, similar to pselect.
1004 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1005 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1006 renameat, unlinkat, linkat, symlinkat, readlinkat.
1008 * New Linux kernel system calls: unshare,
1009 inotify_init, inotify_add_watch, inotify_rm_watch.
1011 * The euidaccess function is now also known by the alias eaccess,
1012 for compatibility with some other systems.
1014 * Timezone data updated to 2006b version.
1015 \f
1016 Version 2.3.6
1018 * The following bugs are resolved with this release:
1020 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1021 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1022 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1023 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1024 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1025 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1027 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1029 * As of this release, GCC 4 can be used to compile the C Library.
1031 * Timezone data updated to 2005m version.
1032 \f
1033 Version 2.3.5
1035 * The following bugs are resolved with this release:
1037 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1038 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1039 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1040 777, 787, 821, 822, 823, 825
1042 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1043 \f
1044 Version 2.3.4
1046 * Support for RFC 3678. Real implementations exist only for Linux so far.
1047 Implemented by Ulrich Drepper.
1049 * nscd can now cache entries persistently. Expiring entries are reloaded.
1050 For speedups the cache can be shared in memory with client processes.
1051 Implemented by Ulrich Drepper.
1053 * nscd can now perform SELinux checks.
1054 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1056 * getaddrinfo queries are now cached. Canonical name lookup is performed
1057 efficiently.
1058 Implemented by Ulrich Drepper.
1060 * The nothrow function attribute is used when headers are used by gcc when
1061 compiling C code. This can avoid significant amounts of exception
1062 handling data.
1064 * The malloc functions perform more error checking and are stricter when
1065 it comes to reacting on errors. The default action is to terminate
1066 the process after showing an error message. Implemented by Ulrich Drepper.
1068 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1069 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1071 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1072 namespaces using the new function dlmopen(). This feature is of course,
1073 like most other dynamic loading functionality, not available in statically
1074 linked applications. Implemented by Ulrich Drepper.
1076 * Low-overhead boundary checking variants of string and some stdio functions
1077 were added. These are to be used in conjunction with a gcc patch by
1078 Jakub Jelinek which adds calls to these functions if possible.
1079 Implemented by Jakub Jelinek and Ulrich Drepper.
1081 * Old code for several operating systems and machine architectures that
1082 have not been in working condition in a long time have been removed from
1083 the main source tree maintained by the GNU C Library's maintainers.
1084 These files are now reside in the separate `ports' source module
1085 that is usable as an add-on when building the library.
1086 \f
1087 Version 2.3.3
1089 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1090 interrogate the dynamic linker, compatible with the Solaris interface.
1092 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1093 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1095 * getifaddrs now uses the netlink interface on Linux to get its information.
1096 Implemented by Thorsten Kukuk.
1098 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1099 Implemented by Ulrich Drepper.
1101 * support for non-executable stacks on x86 has been added. Changes mostly
1102 by Roland McGrath.
1104 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1105 and Ulrich Drepper.
1107 * getaddrinfo now performs destination address selection according to
1108 RFC 3484.
1109 \f
1110 Version 2.3.2
1112 * Thread-safe interfaces for many functions that access locale data
1113 were added in version 2.3, but these features were omitted from NEWS.
1114 Many functions have variants with an `_l' suffix that take a `locale_t'
1115 object as a parameter rather than consulting the current locale.
1116 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1117 create and maintain `locale_t' objects. Additionally, the new function
1118 `uselocale' sets "the current locale" (as used by functions not so
1119 parameterized) set for an individual thread. These features were added
1120 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1122 * The functions getresuid, getresgid, setresuid, and setresgid, which
1123 have long been available on Linux, are now declared in <unistd.h>
1124 and are now also available on the Hurd.
1126 * ELF thread-local storage support (TLS) now works on x86-64.
1128 * The new dynamic string token $LIB is expanded in shared library names.
1129 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1131 * Aldy Hernandez contributed complete software floating point support for
1132 PowerPC machines with no FPU.
1134 * fexecve is implemented on Linux.
1136 * The `btowc' function should work at least twice as fast due to
1137 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1139 * With approriate thread add-ons cancelable functions are now implemented
1140 in libc.so as well. No need to call the function in libpthread. This
1141 change allowed to finally disable the incorrect and expensive handling
1142 of weak definition in ld.so.
1144 * Yet more PLT entries in libc.so have been removed. We finally arrived
1145 at the bare minimum. Startup times improved appropriately.
1147 * Support for the new Linux/x86 system call interface was added. The
1148 AT_SYSINFO auxiliary vector entry is recognized and handled.
1149 \f
1150 Version 2.3
1152 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1153 charsets.
1155 * iconv (the program and the interface) now accepts empty names (excluding
1156 options like //TRANSLIT) to mean "use charset of current locale".
1158 * localedef can now transliterate characters in strings which are not in
1159 the provided charmap. The information from the input locale is used.
1161 * Prelinking support was added for ELF targets. This requires additional
1162 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1164 * Read-only stdio streams now use mmap to speed up operation by eliminating
1165 copying and buffer underflows. To use add 'm' to the mode string of
1166 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1168 * The malloc functions were completely rewritten by Wolfram Gloger based
1169 on Doug Lea's malloc-2.7.0.c.
1171 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1172 implementation of regex.
1174 * Bruno Haible upgraded the iconv and locale implementation to support
1175 Unicode 3.2.
1177 * Contents of the LC_* and LANG environment variables in the CEN style are
1178 not recognized anymore. It never was used. Change by Ulrich Drepper.
1180 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1181 thread-local storage (TLS) ABI on some platforms.
1182 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1184 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1185 EUC-JISX0213, and TSCII.
1187 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1188 BSD-compatible interface for getting all network interface addresses.
1189 Implementation for IPv4 by Roland McGrath.
1191 * Loading of locale data is faster due to the introduction of a locale
1192 archive. Implemented by Roland McGrath and Ulrich Drepper.
1194 * Startup times are significantly reduced by not using exported functions
1195 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1196 and Ulrich Drepper.
1198 * Steven Munroe contributed a port to PowerPC64/Linux.
1199 \f
1200 Version 2.2.6
1202 * The Hurd now uses the GNU libio implementation of stdio rather than the
1203 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1205 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1206 with the same behavior as the Linux system call of the same name.
1207 \f
1208 Version 2.2.5
1210 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1211 128-bit long double format.
1213 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1214 IBM1161, and IBM1162 charsets.
1216 * Andreas Jaeger contributed a port to x86-64/Linux.
1218 * Peter Bruin contributed a port to PowerPC/Hurd.
1220 * libc functions using I/O streams now can handle wide-oriented streams
1221 as well.
1223 * optimizations in the dynamic linker. Binaries created by recent binutils
1224 versions start up quicker due to reduced time spent on relocations.
1226 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1227 \f
1228 Version 2.2.4
1230 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1231 asinh, atanh, j0 for the 128-bit long double format.
1233 * Bruno Haible updated all the code handling Unicode in some form to
1234 support Unicode 3.1.
1236 * Speed of regex for single-byte locales is back to previous levels.
1237 Patch by Isamu Hasegawa.
1239 * Alpha, SPARC, and IA-64 now also using floating stacks.
1241 * Startup time of internationalized applications greatly improved through
1242 iconv cache. Use iconvconfig to generate the cache file.
1243 Contributed by Ulrich Drepper.
1245 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1246 severe performance problems. Patch by David Mosberger.
1248 * The Hurd port got a lot more functionality like AIO, various stdio
1249 extensions, etc. Mainly done by Roland McGrath.
1251 * mtrace can now lookup symbols in shared libraries.
1252 \f
1253 Version 2.2.3
1255 * Intel's IA-64 math library is largely integrated. It provides fast and
1256 accurate implementatations for most basic and standard math functions
1257 in float, double, and long double format.
1259 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1260 and asin for the 96-bit long double format and asin, log, tan for the
1261 128-bit long double format.
1263 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1264 The basic double functions exist today. Contributed by Abraham Ziv
1265 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1266 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1268 * An asynchronous name lookup library was added. The interface is designed
1269 after POSIX AIO. The proposal was circulated beforehand to get comments.
1270 No negative ones came in. Implemented by Ulrich Drepper.
1272 * Port to S390/64bit contributed by Martin Schwidefsky
1273 <schwidefsky@de.ibm.com>.
1275 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1276 of functions for Linux/IA-64.
1278 * The RPC code is now thread safe. Threads can now use the same service
1279 of different services at the same time. Patch by Eric Norum
1280 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1282 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1283 family of functions for Linux/S390.
1285 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1286 of functions for Linux/x86.
1288 * Port to Linux/CRIS contributed by Axis Communications.
1289 \f
1290 Version 2.2.2
1292 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1293 we can now check for namespace violations and missing declarations. The
1294 result is that almost all headers are now Unix-compliant (as defined in
1295 the upcoming XPG6). The negative side is that some programs might need
1296 corrections, too, if they depend on the incorrect form of the headers in
1297 previous versions which defined too many symbols and included too many
1298 other headers.
1300 * regex now handles multibyte character sets correctly.
1301 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1303 * iconv (the program) does now conform to the upcoming XPG6 and handles
1304 charmaps. Instead of the charset names the path of charmaps can be
1305 provided and the conversion happens based on this data.
1306 Contributed by Ulrich Drepper.
1308 * The locale program now provides detailed information about the installed
1309 locales. While
1311 locale -a
1313 only lists the names of the supported locales
1315 locale -a --verbose
1317 provides details such as country, language, and codeset name.
1318 Contributed by Ulrich Drepper.
1319 \f
1320 Version 2.2.1
1322 * The gencat program now parses the input file according to the charset
1323 selected by the LC_CTYPE category. This is important for stateful
1324 character sets. To make generating catalogs easier there is a way
1325 to overwrite the charset selected by the locale: before the first
1326 message or $ quote line the catalog can contain a line like
1328 $ codeset=ISO-8859-2
1330 to select the charset (ISO-8859-2 in this case).
1332 Implemented by Shinya Hanataka and Ulrich Drepper.
1334 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1335 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1336 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1338 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1339 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1341 * The LANGUAGE environment variable is now ignored unless the locale is
1342 changed from the default "C" locale.
1344 * The usual bug fixes.
1345 \f
1346 Version 2.2
1348 * Greg McGary added runtime support for bounds checking using gcc's
1349 new -fbounded-pointers option. ix86 target is complete. PowerPC
1350 is in progress.
1352 * Thorsten Kukuk added secure mode support to nscd.
1354 * The Berkeley db libraries have been removed.
1356 Related, the nss_db module is now in a separate package since it
1357 obviously requires a database library being available.
1359 * Wide character I/O streams implemented by Ulrich Drepper.
1361 * Functions from the extended socket API added by Ulrich Drepper.
1363 * Functions feenableexcept and fedisableexcept to control the
1364 behaviour of individual exceptions have been added by Andreas Jaeger.
1366 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1368 * The resolver code has been updated from bind 8.2.3-T5B which supports
1369 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1370 and Mark Kettenis.
1372 This change could in some situations effect backward compatibility. Since
1373 now `_res' is a thread-local instead of a global variable, modifying it
1374 in one thread does not have any effect in other threads.
1376 The resolver library was also extended to allow IPv6 as the transport
1377 protocol for the requests. This work was done by Stig Venaas.
1379 * Compatibility code for K&R C compilers has been removed from the
1380 header files. A ISO C compiler is needed to use the library
1381 (conforming to either C89 or C99 standard).
1383 * Complete rewrite of the localedef program to support multibyte character
1384 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1385 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1386 Implemented by Ulrich Drepper.
1388 Bruno Haible significantly improved the generation and use of the data
1389 structures for the wide character tables.
1391 * Plural handling in gettext implemented by Ulrich Drepper.
1393 * The utmp daemon has been removed.
1395 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1397 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1398 and Yutaka Niibe.
1400 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1402 * POSIX barriers implemented by Kaz Kylheku.
1404 * POSIX spawn function family implemented by Ulrich Drepper.
1406 * POSIX spinlocks are now available.
1408 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1410 * the configure option --enable-kernel=X.Y.Z allows to strip out
1411 compatibility for kernel versions before X.Y.Z. This is currently only
1412 implemented for Linux.
1414 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1415 field sin6_scope_id. This means that all programs using IPv6 should be
1416 recompiled. Don't expect binary compatibility with previous glibc
1417 versions.
1419 * various conversion modules for IBM character sets contributed by
1420 Masahide Washizawa.
1422 * IA-64 port by Jes Sorensen and HJ Lu.
1423 \f
1424 Version 2.1.3
1426 * bug fixes
1428 \f
1429 Version 2.1.2
1431 * bug fixes
1433 \f
1434 Version 2.1.1
1436 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1438 * New xdr functions are added; some rpc functions are now 64bit clean.
1440 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1442 * Fixed known incompatibilities with glibc 2.0.
1444 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1446 * Optimized a number of functions (especially the ELF dynamic loader).
1448 * Update timezone data files.
1450 * lots of charmaps corrections
1452 * some new locale definitions and charmaps
1454 \f
1455 Version 2.1
1457 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1458 conform to POSIX member type requirements. Symbol versions have been
1459 adjusted as needed within the library, and for direct use by applications,
1460 but there is potential for problems if third-party libraries use
1461 struct timeval as part of their interface. This does not present
1462 a problem for X and other "essential" system libraries.
1464 * An additional locale model to support C++ Standard Library locale
1465 model and probably more was implemented by Ulrich Drepper.
1467 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1468 symbol level.
1470 * Miles Bader provided the `argp' function family to support hierachical
1471 command line argument parsing, layered on top of getopt.
1473 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1475 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1476 numbers.
1478 * scanf recognizes the %a and %A format for scanning floating point numbers.
1480 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1481 information and interfaces for the available integer types.
1483 * about 130 new math functions were added to implement the ISO C9x math
1484 library.
1486 * the new header <complex.h> contains definitions of the complex math
1487 functions from ISO C 9X.
1489 * the new header <tgmath.h> defines generic macros to use complex or
1490 real valued functions.
1492 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1494 * Andreas Jaeger provided a test suite for the math library.
1496 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1498 * Ulrich Drepper added character set conversion functions (iconv).
1500 * Optimized string functions have been added.
1502 * The localedata addon is now part of glibc.
1504 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1506 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1507 daemon for NSS (nscd).
1509 Missing a better place here are some numbers on improvements. Under
1510 Linux 2.1.125 un-tar-ing the kernel sources takes
1512 user system wall
1514 using local files 12.19s 6.88s 22.91s
1516 using NIS 13.92s 8.91s 26.34s
1518 using NIS & nscd 10.37s 7.34s 25.30s
1520 using NIS+ 27.57s 30.37s 640.46s
1522 using NIS+ & nscd 10.25s 7.83s 26.51s
1524 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1526 Keep in mind that non-namelookup related operations dominate above times.
1527 It was just a common complain that using NIS+ unpacking the kernel is
1528 horribly slow.
1530 [1] The old nscd implementation is not available anymore since it was
1531 distributed with glibc up to version 2.0.98 and thus is now replaced.
1533 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1535 * Mark Kettenis provided a Hesiod NSS module.
1537 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1538 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1540 * rcmd can now handle netgroups (Dick Streefland).
1542 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1543 Bambrough.
1545 * Support for the IPv6 protocol has been added to the socket API, as per the
1546 latest draft standards.
1548 * Support for Linux 2.2 has been added.
1550 * Interface changes relative to the latest 2.0.x release:
1551 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1552 addseverity NEW: Unix98
1553 alphasort64 NEW: LFS
1554 argp_err_exit_status NEW: argp, GNU ext
1555 argp_error NEW: argp, GNU ext
1556 argp_failure NEW: argp, GNU ext
1557 argp_help NEW: argp, GNU ext
1558 argp_parse NEW: argp, GNU ext
1559 argp_program_bug_address NEW: argp, GNU ext
1560 argp_program_version NEW: argp, GNU ext
1561 argp_program_version_hook NEW: argp, GNU ext
1562 argp_state_help NEW: argp, GNU ext
1563 argp_usage NEW: argp, GNU ext
1564 authdes_create NEW: Secure RPC
1565 authdes_getucred NEW: Secure RPC
1566 authdes_pk_create NEW: Secure RPC
1567 backtrace NEW: GNU ext.
1568 backtrace_symbols NEW: GNU ext.
1569 backtrace_symbols_fd NEW: GNU ext.
1570 cacos NEW: ISO C 9x
1571 cacosf NEW: ISO C 9x
1572 cacosh NEW: ISO C 9x
1573 cacoshf NEW: ISO C 9x
1574 cacoshl NEW: ISO C 9x
1575 cacosl NEW: ISO C 9x
1576 capget NEW: kernel
1577 capset NEW: kernel
1578 carg NEW: ISO C 9x
1579 cargf NEW: ISO C 9x
1580 cargl NEW: ISO C 9x
1581 casin NEW: ISO C 9x
1582 casinf NEW: ISO C 9x
1583 casinh NEW: ISO C 9x
1584 casinhf NEW: ISO C 9x
1585 casinhl NEW: ISO C 9x
1586 casinl NEW: ISO C 9x
1587 catan NEW: ISO C 9x
1588 catanf NEW: ISO C 9x
1589 catanh NEW: ISO C 9x
1590 catanhf NEW: ISO C 9x
1591 catanhl NEW: ISO C 9x
1592 catanl NEW: ISO C 9x
1593 cbc_crypt NEW: Secure RPC
1594 ccos NEW: ISO C 9x
1595 ccosf NEW: ISO C 9x
1596 ccosh NEW: ISO C 9x
1597 ccoshf NEW: ISO C 9x
1598 ccoshl NEW: ISO C 9x
1599 ccosl NEW: ISO C 9x
1600 cexp NEW: ISO C 9x
1601 cexpf NEW: ISO C 9x
1602 cexpl NEW: ISO C 9x
1603 cimag NEW: ISO C 9x
1604 cimagf NEW: ISO C 9x
1605 cimagl NEW: ISO C 9x
1606 clearerr_locked REMOVED
1607 clntunix_create NEW: sunrpc ext
1608 clog NEW: ISO C 9x
1609 clog10 NEW: ISO C 9x
1610 clog10f NEW: ISO C 9x
1611 clog10l NEW: ISO C 9x
1612 clogf NEW: ISO C 9x
1613 clogl NEW: ISO C 9x
1614 conj NEW: ISO C 9x
1615 conjf NEW: ISO C 9x
1616 conjl NEW: ISO C 9x
1617 cpow NEW: ISO C 9x
1618 cpowf NEW: ISO C 9x
1619 cpowl NEW: ISO C 9x
1620 cproj NEW: ISO C 9x
1621 cprojf NEW: ISO C 9x
1622 cprojl NEW: ISO C 9x
1623 creal NEW: ISO C 9x
1624 crealf NEW: ISO C 9x
1625 creall NEW: ISO C 9x
1626 creat64 NEW: LFS
1627 csin NEW: ISO C 9x
1628 csinf NEW: ISO C 9x
1629 csinh NEW: ISO C 9x
1630 csinhf NEW: ISO C 9x
1631 csinhl NEW: ISO C 9x
1632 csinl NEW: ISO C 9x
1633 csqrt NEW: ISO C 9x
1634 csqrtf NEW: ISO C 9x
1635 csqrtl NEW: ISO C 9x
1636 ctan NEW: ISO C 9x
1637 ctanf NEW: ISO C 9x
1638 ctanh NEW: ISO C 9x
1639 ctanhf NEW: ISO C 9x
1640 ctanhl NEW: ISO C 9x
1641 ctanl NEW: ISO C 9x
1642 des_setparity NEW: Secure RPC
1643 ecb_crypt NEW: Secure RPC
1644 endutxent NEW: Unix98
1645 exp10 NEW: ISO C 9x
1646 exp10f NEW: ISO C 9x
1647 exp10l NEW: ISO C 9x
1648 exp2 NEW: ISO C 9x
1649 exp2f NEW: ISO C 9x
1650 exp2l NEW: ISO C 9x
1651 fattach NEW: STREAMS
1652 fdetach NEW: STREAMS
1653 fdim NEW: ISO C 9x
1654 fdimf NEW: ISO C 9x
1655 fdiml NEW: ISO C 9x
1656 feclearexcept NEW: ISO C 9x
1657 fegetenv NEW: ISO C 9x
1658 fegetexceptflag NEW: ISO C 9x
1659 fegetround NEW: ISO C 9x
1660 feholdexcept NEW: ISO C 9x
1661 feof_locked REMOVED
1662 feraiseexcept NEW: ISO C 9x
1663 ferror_locked REMOVED
1664 fesetenv NEW: ISO C 9x
1665 fesetexceptflag NEW: ISO C 9x
1666 fesetround NEW: ISO C 9x
1667 fetestexcept NEW: ISO C 9x
1668 feupdateenv NEW: ISO C 9x
1669 fflush_locked REMOVED
1670 ffsl NEW: GNU ext.
1671 ffsll NEW: GNU ext.
1672 fgetpos64 NEW: LFS
1673 fgets_unlocked NEW: GNU ext.
1674 fileno_locked REMOVED
1675 fma NEW: ISO C 9x
1676 fmaf NEW: ISO C 9x
1677 fmal NEW: ISO C 9x
1678 fmax NEW: ISO C 9x
1679 fmaxf NEW: ISO C 9x
1680 fmaxl NEW: ISO C 9x
1681 fmin NEW: ISO C 9x
1682 fminf NEW: ISO C 9x
1683 fminl NEW: ISO C 9x
1684 fmtmsg NEW: Unix98
1685 fopen64 NEW: LFS
1686 fputc_locked REMOVED
1687 fputs_unlocked NEW: GNU ext.
1688 fread_unlocked NEW: GNU ext.
1689 freopen64 NEW: LFS
1690 fseeko NEW: Unix98
1691 fsetpos64 NEW: LFS
1692 fstatfs64 NEW: LFS
1693 fstatvfs NEW: Unix98
1694 fstatvfs64 NEW: LFS
1695 ftello NEW: Unix98
1696 ftello64 NEW: LFS
1697 ftruncate64 NEW: LFS
1698 ftw64 NEW: LFS
1699 fwrite_unlocked NEW: GNU ext.
1700 gai_strerror NEW: IPv6
1701 gamma_r REMOVED
1702 gammaf_r REMOVED
1703 gammal_r REMOVED
1704 getchar_locked REMOVED
1705 getdate NEW: Unix98
1706 getdate_err NEW: Unix98
1707 getdate_r NEW: GNU ext.
1708 getmsg NEW: STREAMS
1709 getnameinfo NEW: IPv6
1710 getnetname NEW: Secure RPC
1711 getpmsg NEW: STREAMS
1712 getpt NEW: Unix98 PTY
1713 getrlimit64 NEW: LFS
1714 getutxent NEW: Unix98
1715 getutxid NEW: Unix98
1716 getutxline NEW: Unix98
1717 glob64 NEW: GNU ext.
1718 globfree64 NEW: GNU ext.
1719 gnu_get_libc_release NEW: GNU ext.
1720 gnu_get_libc_version NEW: GNU ext.
1721 grantpt NEW: Unix98 PTY
1722 host2netname NEW: Secure RPC
1723 iconv NEW: iconv
1724 iconv_close NEW: iconv
1725 iconv_open NEW: iconv
1726 if_freenameindex NEW: IPv6
1727 if_indextoname NEW: IPv6
1728 if_nameindex NEW: IPv6
1729 if_nametoindex NEW: IPv6
1730 in6addr_any NEW: IPv6
1731 in6addr_loopback NEW: IPv6
1732 inet6_isipv4mapped NEW: IPv6
1733 isastream NEW: STREAMS
1734 iswblank NEW: GNU ext.
1735 key_decryptsession NEW: Secure RPC
1736 key_decryptsession_pk NEW: Secure RPC
1737 key_encryptsession NEW: Secure RPC
1738 key_encryptsession_pk NEW: Secure RPC
1739 key_gendes NEW: Secure RPC
1740 key_get_conv NEW: Secure RPC
1741 key_secretkey_is_set NEW: Secure RPC
1742 key_setnet NEW: Secure RPC
1743 key_setsecret NEW: Secure RPC
1744 llrint NEW: ISO C 9x
1745 llrintf NEW: ISO C 9x
1746 llrintl NEW: ISO C 9x
1747 llround NEW: ISO C 9x
1748 llroundf NEW: ISO C 9x
1749 llroundl NEW: ISO C 9x
1750 log2 NEW: ISO C 9x
1751 log2f NEW: ISO C 9x
1752 log2l NEW: ISO C 9x
1753 lrint NEW: ISO C 9x
1754 lrintf NEW: ISO C 9x
1755 lrintl NEW: ISO C 9x
1756 lround NEW: ISO C 9x
1757 lroundf NEW: ISO C 9x
1758 lroundl NEW: ISO C 9x
1759 lseek64 NEW: LFS
1760 makecontext NEW: Unix98
1761 mempcpy NEW: GNU ext.
1762 mmap64 NEW: LFS
1763 moncontrol REMOVED
1764 modify_ldt NEW: kernel
1765 nan NEW: ISO C 9x
1766 nanf NEW: ISO C 9x
1767 nanl NEW: ISO C 9x
1768 nearbyint NEW: ISO C 9x
1769 nearbyintf NEW: ISO C 9x
1770 nearbyintl NEW: ISO C 9x
1771 netname2host NEW: Secure RPC
1772 netname2user NEW: Secure RPC
1773 nexttoward NEW: ISO C 9x
1774 nexttowardf NEW: ISO C 9x
1775 nexttowardl NEW: ISO C 9x
1776 nftw NEW: Unix98
1777 nftw64 NEW: LFS
1778 open64 NEW: LFS
1779 passwd2des NEW: Secure RPC
1780 pow10 NEW: GNU ext.
1781 pow10f NEW: GNU ext.
1782 pow10l NEW: GNU ext.
1783 pread NEW: Unix98
1784 pread64 NEW: LFS
1785 printf_size NEW: GNU ext.
1786 printf_size_info NEW: GNU ext.
1787 profil_counter REMOVED
1788 pthread_mutexattr_getkind_np REPLACED
1789 pthread_mutexattr_setkind_np REPLACED
1790 ptsname NEW: Unix98 PTY
1791 ptsname_r NEW: Unix98 PTY
1792 putc_locked REMOVED
1793 putchar_locked REMOVED
1794 putgrent NEW: GNU ext.
1795 putmsg NEW: STREAMS
1796 putpmsg NEW: STREAMS
1797 pututxline NEW: Unix98
1798 pwrite NEW: Unix98
1799 pwrite64 NEW: LFS
1800 readdir64 NEW: LFS
1801 readdir64_r NEW: LFS
1802 remquo NEW: ISO C 9x
1803 remquof NEW: ISO C 9x
1804 remquol NEW: ISO C 9x
1805 round NEW: ISO C 9x
1806 roundf NEW: ISO C 9x
1807 roundl NEW: ISO C 9x
1808 rtime NEW: GNU ext.
1809 scalbln NEW: ISO C 9x
1810 scalblnf NEW: ISO C 9x
1811 scalblnl NEW: ISO C 9x
1812 scandir64 NEW: LFS
1813 sendfile NEW: kernel
1814 setcontext NEW: Unix98
1815 setrlimit64 NEW: LFS
1816 setutxent NEW: Unix98
1817 sighold NEW: Unix98
1818 sigignore NEW: Unix98
1819 sigqueue NEW: POSIX.1b
1820 sigrelse NEW: Unix98
1821 sigset NEW: POSIX.1b
1822 sigtimedwait NEW: POSIX.1b
1823 sigwaitinfo NEW: POSIX.1b
1824 sincos NEW: GNU ext.
1825 sincosf NEW: GNU ext.
1826 sincosl NEW: GNU ext.
1827 statfs64 NEW: LFS
1828 statvfs NEW: Unix98
1829 statvfs64 NEW: LFS
1830 strcasestr NEW: GNU ext.
1831 strtoimax NEW: ISO C 9x
1832 strtoumax NEW: ISO C 9x
1833 strverscmp NEW: GNU ext.
1834 svcauthdes_stats NEW: Secure RPC
1835 svcunix_create NEW: sunrpc etx
1836 svcunixfd_create NEW: sunrpc ext
1837 swapcontext NEW: Unix98
1838 tcgetsid NEW: Unix98 PTY
1839 tdestroy NEW: GNU ext.
1840 tgamma NEW: ISO C 9x
1841 tgammaf NEW: ISO C 9x
1842 tgammal NEW: ISO C 9x
1843 tmpfile64 NEW: LFS
1844 trunc NEW: ISO C 9x
1845 truncate64 NEW: LFS
1846 truncf NEW: ISO C 9x
1847 truncl NEW: ISO C 9x
1848 umount2 NEW: kernel
1849 unlockpt NEW: Unix98 PTY
1850 updwtmpx NEW: Unix98
1851 user2netname NEW: Secure RPC
1852 utmpxname NEW: Unix98
1853 versionsort NEW: GNU ext.
1854 versionsort64 NEW: GNU ext.
1855 waitid NEW: Unix98
1856 wcscasecmp NEW: GNU ext.
1857 wcsncasecmp NEW: GNU ext.
1858 wcsnlen NEW: GNU ext.
1859 wcstoimax NEW: ISO C 9x
1860 wcstoll NEW: ISO C 9x
1861 wcstoull NEW: ISO C 9x
1862 wcstoumax NEW: ISO C 9x
1863 wcswcs NEW: Unix98
1864 wordexp NEW: POSIX.2
1865 wordfree NEW: POSIX.2
1866 write_profiling REMOVED
1867 xdecrypt NEW: Secure RPC
1868 xdr_authdes_cred NEW: Secure RPC
1869 xdr_authdes_verf NEW: Secure RPC
1870 xdr_cryptkeyarg NEW: Secure RPC
1871 xdr_cryptkeyarg2 NEW: Secure RPC
1872 xdr_cryptkeyres NEW: Secure RPC
1873 xdr_getcredres NEW: Secure RPC
1874 xdr_key_netstarg NEW: Secure RPC
1875 xdr_key_netstres NEW: Secure RPC
1876 xdr_keybuf NEW: Secure RPC
1877 xdr_keystatus NEW: Secure RPC
1878 xdr_netnamestr NEW: Secure RPC
1879 xdr_sizeof NEW: Secure RPC
1880 xdr_unixcred NEW: sunrpc ext
1881 xencrypt NEW: Secure RPC
1882 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1883 \f
1884 Version 2.0.6
1886 * more bug fixes
1888 \f
1889 Version 2.0.5
1891 * more bug fixes
1893 * inet_ntoa is thread-safe
1895 * updwtmp is moved from libutil to libc
1897 * rewrite of cbrt function
1899 * update of timezone data
1900 \f
1901 Version 2.0.4
1903 * more bug fixes
1904 \f
1905 Version 2.0.3
1907 * more bug fixes
1908 \f
1909 Version 2.0.2
1911 * more bug fixes
1913 * add atoll function
1915 * fix complex problems in Berkeley DB code
1917 * fix math functions
1918 \f
1919 Version 2.0.1
1921 * fixed lots of header problems (especially Linux/GNU specific)
1923 * dynamic loader preserves all registers
1925 * Roland McGrath provided support for handling of auxiliary objects in
1926 the ELF dynamic loader.
1928 * support for parallel builds is improved
1929 \f
1930 Version 2.0
1932 * GNU extensions are no longer declared by default. To enable them you
1933 must define the macro `_GNU_SOURCE' in your program or compile with
1934 `-D_GNU_SOURCE'.
1936 * The library has changed from using GNU ld symbol aliases to using weak
1937 symbols where available. The ELF object file format supports weak
1938 symbols; GNU ld also supports weak symbols in the a.out format. (There
1939 is also now support for other GNU ld extensions in ELF. Use the
1940 `--with-elf' option to configure to indicate you have ELF, and
1941 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1942 of many files which contained only symbol aliases, reducing the size of
1943 the source and the compiled library; many other files were renamed to
1944 less cryptic names previously occupied by the symbol alias files.
1945 There is a new header file <elf.h> for programs which operate on
1946 files in the ELF format.
1948 * Converted to Autoconf version 2, so `configure' has more options.
1949 Run `configure --help' to see the details.
1951 * The library can now be configured to build profiling, highly-optimized
1952 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1953 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1954 `configure' enable building these extra libraries. The shared library is
1955 built by default when using both ELF and GNU ld. When shared libraries
1956 are enabled, the new library `-ldl' is available for arbitrary run-time
1957 loading of shared objects; its interface is defined in <dlfcn.h>. The
1958 new header file <link.h> gives access to the internals of the run-time
1959 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1960 application of same name on other systems and it provides information
1961 about dynamically linked binaries.
1963 * The C library now provides the run-time support code for profiling
1964 executables compiled with `-pg'. Programs can control the profiling code
1965 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1966 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1967 the support for this file format was contributed by David Mosberger-Tang.
1969 * The math code has been replaced with a math library based on fdlibm from
1970 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1971 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1972 functions. The math functions now reside in a separate library, so
1973 programs using them will need to use `-lm' their linking commands.
1975 * John C. Bowman contributed optimized ix87 assembler inline functions.
1977 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1978 mechanism similar to that found in Solaris 2. This is now used for the
1979 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1980 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1981 file controls what services are used for each individual database. This
1982 works by loading shared libraries with names specified in `nsswitch.conf',
1983 so service modules can be changed or added at any time without even
1984 relinking any program. Currently there are the file, db, and NIS based
1985 NSS services available.
1987 * The new functions `strtoq' and `strtouq' parse integer values from
1988 strings, like `strtol' and `strtoul', but they return `long long int' and
1989 `unsigned long long int' values, respectively (64-bit quantities).
1991 * The new functions `strtof' and `strtold' parse floating-point values from
1992 strings, like `strtod', but they return `float' and `long double' values,
1993 respectively (on some machines `double' and `long double' are the same).
1995 * Ulrich Drepper has contributed new implementations of the floating-point
1996 printing and reading code used in the `printf' family of functions and
1997 `strtod', `strtof', and `strtold'. These new functions are perfectly
1998 accurate, and much faster than the old ones.
2000 * The implementation of the POSIX locale model was completely rewritten by
2001 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2002 to compile the POSIX locale definition.
2004 * The former dummy implementations of the strcoll and strxfrm function are
2005 now replaced by fully functional code contributed by Ulrich Drepper. The
2006 collation information comes from the POSIX locale definitions.
2008 * The new header <langinfo.h> defines an interface for accessing
2009 various locale-dependent data (using the locale chosen with `setlocale').
2011 * Ulrich Drepper has contributed a new suite of functions for operation on
2012 wide-character and multibyte-character strings, in <wchar.h>;
2013 and classification and case conversion of wide characters, in <wctype.h>.
2014 These new functions are conforming to the ISO C, Amendement 1 specification.
2016 * There is now a second implementation of the standard I/O library available.
2017 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2018 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2020 * You can now use positional parameter specifications in format strings
2021 for the `printf' and `scanf' families of functions. For example,
2022 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2023 ``Number 6, Mr Jones''. This is mainly useful when providing different
2024 format strings for different languages, whose grammars may dictate
2025 different orderings of the values being printed. To support this
2026 feature, the interface for `register_printf_handler' has changed; see
2027 the header file <printf.h> for details.
2029 * The `printf' and `scanf' families of functions now understand a new
2030 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2031 to group numbers as indicated by the locale; for `scanf' and friends, this
2032 says to accept as valid only a number with all the proper grouping
2033 separators in the right places. In the default "C" locale, numbers are
2034 not grouped; but locales for specific countries will define the usual
2035 conventions (i.e. separate thousands with `,' in the US locale).
2037 * The pgrp functions have been regularized, slightly incompatibly but much
2038 less confusingly. The core functions are now `getpgid' and `setpgid',
2039 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2040 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2041 provided for compatibility. There is no longer an incompatible `getpgrp'
2042 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2044 * The new header file <fts.h> and suite of functions simplify programs that
2045 operate on directory trees. This code comes from 4.4 BSD.
2047 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2048 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2049 NSS scheme used in glibc.
2051 * There is a new malloc debugging hook `__memalign_hook'.
2053 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2054 `unsigned int' in <sys/types.h>. These are for compatibility only and
2055 their use is discouraged.
2057 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2058 done differently, so that it works even without GNU ld.
2060 * New function `euidaccess' checks allowed access to a file like `access',
2061 but using the effective IDs instead of the real IDs.
2063 * The time zone data files have been updated for the latest and greatest
2064 local time conventions of the countries of the world.
2066 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2067 see <dirent.h>.
2069 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2070 for formatting floating-point numbers. They are provided only for
2071 compatibility; new programs should use `sprintf' instead. There are
2072 also equivalent function for the `long double' floating-point type and
2073 all functions also exist in a reentrant form.
2075 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2076 functions for maintaining the login-record files (primarily of use to
2077 system programs such as `login'), and convenient functions for
2078 allocating and initializing a pseudo-terminal (pty) device.
2080 * Ulrich Drepper has contributed new support for System V style
2081 shared memory and IPC on systems that support it.
2083 * Ulrich Drepper has contributed several miscellaneous new functions found
2084 in System V: The `hsearch' family of functions provide an effective
2085 implementation of hash tables; `a64l' and `l64a' provide a very simple
2086 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2087 number generator.
2089 * Ulrich Drepper has contributed new reentrant counterparts for the
2090 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2092 * Ulrich Drepper has contributed new, highly-optimized versions of several
2093 string functions for the i486/Pentium family of processors.
2095 * Ulrich Drepper has updated the Linux-specific code, based largely
2096 on work done in Hongjiu Lu's version of GNU libc for Linux.
2097 The GNU library now supports Linux versions 2.0.10 and later,
2098 using the ELF object file format (i[3456]86-*-linux).
2100 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2102 * David Mosberger-Tang and Richard Henderson have ported the C library
2103 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2104 dynamic linking support for ELF/Alpha.
2106 * Richard Henderson contributed several Alpha optimized assembler function
2107 for arithmetic and string handling.
2109 * Ulrich Drepper has contributed a new set of message catalog functions to
2110 support multiple languages using the <libintl.h> interface, for use with
2111 his new package GNU gettext. Translation volunteers have contributed
2112 catalogs of the library's messages in Spanish, German, and Korean.
2114 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2115 program and the `catgets' function for reading the catalog files it
2116 creates. (The <libintl.h> interface is preferred; we include the
2117 <nl_types.h> interface using `catgets' only for source compatibility with
2118 programs already written to use it.)
2120 * New header file <values.h> gives SVID-compatible names for <limits.h>
2121 constants.
2123 * Various new macros, declarations, and small header files for compatibility
2124 with 4.4 BSD.
2126 * New function `group_member' is a convenient way to check if a process has
2127 a given effective group ID.
2129 * When using GCC 2.7 and later, the socket functions are now declared in a
2130 special way so that passing an argument of type `struct sockaddr_in *',
2131 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2132 `struct sockaddr *' type, does not generate a type-clash warning.
2134 * New function `error' declared in header file <error.h> is a convenient
2135 function for printing error messages and optionally exiting; this is the
2136 canonical function used in GNU programs. The new functions `err', `warn',
2137 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2138 doing the same thing.
2140 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2141 POSIX.2 `glob' function to do ~ and {...} expansion.
2143 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2144 `clearenv' which is used in POSIX.9 is also available.
2146 * New function `getsid' returns session ID number on systems that support it.
2148 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2149 files <db.h> and <mpool.h> provide a rich set of functions for several
2150 types of simple databases stored in memory and in files, and <ndbm.h> is
2151 an old `ndbm'-compatible interface using the `db' functions. Link with
2152 `-ldb' to get these functions.
2154 * New macro `strdupa' copies a string like `strdup', but uses local stack
2155 space from `alloca' instead of dynamic heap space from `malloc'.
2157 * New function `strnlen' is like `strlen' but searches only a given maximum
2158 number of characters for the null terminator. `stpncpy', `strndup' and
2159 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2160 function.
2162 * New function `statfs' in header <sys/statfs.h>.
2164 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2165 provide convenient functions for operating on blocks of null-terminated
2166 strings.
2168 * A new suite of functions in <utmp.h> handle all the details of reading
2169 and writing the utmp file.
2171 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2172 Thorsten Kukuk.
2174 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2175 completely POSIX compliant and also implemented the extended functionality
2176 to handle alternate digit representation and alternate era date formats.
2178 * Ulrich Drepper provided an implementation of the `strptime' function
2179 defined in XPG4.2 which transforms a string into a `struct tm' value.
2181 * Paul Eggert provided the tzselect shell script as part of the timezone
2182 code. The shell script makes it easy to select the correct timezone
2183 specification.
2185 * The implementation of the malloc family of functions is completely replaced
2186 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2187 The implementation uses the mmap function (if available) and it is
2188 optimized for the use in multi threaded programs.
2190 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2191 functions. This new functionality is usable by specifying a special
2192 salt string and it is compatible with implementation on *BSD systems.
2194 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2195 `getsubopt' to handle second level command line options, `bsd_signal'
2196 to access BSD style `signal' functionality, the obsolete `regexp' style
2197 expression matcher.
2199 * the `lchown' function is available on system which support this
2200 functionality.
2202 * The implementation of the shadow password handling function was contributed
2203 by Ulrich Drepper.
2205 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2207 * POSIX.1g support was added. The <sys/select.h> header is available,
2208 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2209 implementation of `getaddrinfo'.
2210 \f
2211 Version 1.09
2213 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2215 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2216 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2218 * The new function `daemon' from 4.4 BSD is useful for server programs that
2219 want to put themselves in the background.
2221 * Joel Sherrill has contributed support for several standalone boards that
2222 run without an operating system.
2224 * `printf', `scanf' and friends now accept a `q' type modifier for long
2225 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2227 * All of the code taken from BSD (notably most of the math and networking
2228 routines) has been updated from the BSD 4.4-Lite release.
2230 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2232 * The new functions `getdomainname' and `setdomainname' fetch or change the
2233 YP/NIS domain name. These are system calls which exist on systems which
2234 have YP (aka NIS).
2236 * The time zone data files have been updated for the latest international
2237 conventions.
2239 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2240 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2241 \f
2242 Version 1.08
2244 * The C library now includes support for Sun RPC, from Sun's free
2245 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2246 are included. (There is still no support for YP.)
2248 * Tom Quinn has contributed a port of the C library to SGI machines running
2249 Irix 4 (mips-sgi-irix4).
2251 * The new `lockf' function is a simplified interface to the locking
2252 facilities of `fcntl', included for compatibility.
2254 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2256 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2258 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2259 compatibility.
2261 * The error message printed by `assert' for a failed assertion now includes
2262 the name of the program (if using GNU ld) and the name of the calling
2263 function (with versions of GCC that support this).
2265 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2267 * The library now includes the <sys/mman.h> header file and memory
2268 management functions `mmap', `munmap', `mprotect', `msync', and
2269 `madvise', on systems that support those facilities.
2271 * The interface for `mcheck' has changed slightly: the function called to
2272 abort the program when an allocation inconsistency is detected now takes
2273 an argument that indicates the type of failure. The new function
2274 `mprobe' lets you request a consistency check for a particular block at
2275 any time (checks are normally done only when you call `free' or `realloc'
2276 on a block).
2278 * It is now possible to easily cross-compile the C library, building on one
2279 system a library to run on another machine and/or operating system. All
2280 you need to do is set the variable `HOST_CC' in `configparms' to the
2281 native compiler for programs to run on the machine you are building on (a
2282 few generator programs are used on Unix systems); set `CC' to the
2283 cross-compiler.
2285 * The new function `fexecve' (only implemented on the GNU system) executes
2286 a program file given a file descriptor already open on the file.
2287 \f
2288 Version 1.07
2290 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2291 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2293 * You can set the variable `libprefix' in `configparms' to specify a prefix
2294 to be prepended to installed library files; this makes it easy to install
2295 the GNU C library to be linked as `-lgnuc' or whatever.
2297 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2298 copies a limited number of characters from a string, and returns the
2299 address of the last character written.
2301 * You no longer need to check for whether the installed `stddef.h' is
2302 compatible with the GNU C library. configure now checks for you.
2304 * You can now define a per-stream `fileno' function to convert the
2305 stream's cookie into an integral file descriptor.
2307 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2308 allocates zero bytes of storage, and returns a unique pointer which
2309 you can pass to `realloc' or `free'. The behavior is undefined if
2310 you dereference this pointer.
2312 * The C library now runs on Sony NEWS m68k machines running either
2313 NewsOS 3 or NewsOS 4.
2315 * The new `syscall' function is a system-dependent primitive function
2316 for invoking system calls. It has the canonical behavior on Unix
2317 systems, including unreliable return values for some calls (such as
2318 `pipe', `fork' and `getppid').
2320 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2321 to `EAGAIN', which is the preferred name. On systems whose kernels
2322 use two distinct codes, the C library now translates EWOULDBLOCK to
2323 EAGAIN in every system call function.
2324 \f
2325 Version 1.06
2327 * The GNU C Library Reference Manual is now distributed with the library.
2328 `make dvi' will produce a DVI file of the printed manual.
2329 `make info' will produce Info files that you can read on line using C-h i
2330 in Emacs or the `info' program.
2331 Please send comments on the manual to bug-glibc-manual@gnu.org.
2333 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2335 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2337 * Jason Merrill has contributed a port to the Sequent Symmetry running
2338 Dynix version 3 (i386-sequent-dynix).
2340 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2341 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2343 * New function `memory_warnings' lets you arrange to get warnings when
2344 malloc is running out of memory to allocate, like Emacs gives you.
2346 * The C library now contains the relocating allocator used in Emacs 19 for
2347 its editing buffers. This allocator (ralloc) minimizes allocation
2348 overhead and fragmentation by moving allocated regions around whenever it
2349 needs to. You always refer to a ralloc'd region with a "handle" (a
2350 pointer to a pointer--an object of type `void **').
2352 * There is a new `printf' format: `%m' gives you the string corresponding
2353 to the error code in `errno'.
2355 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2356 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2357 pass, the `a' modifier says to fill in a `char **' you pass with a
2358 malloc'd string.
2360 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2361 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2362 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2364 * `mkstemp' is a traditional Unix function to atomically create and open a
2365 uniquely-named temporary file.
2366 \f
2367 Version 1.05
2369 * The standard location for the file that says what the local timezone is
2370 has changed again. It is now `/usr/local/etc/localtime' (or more
2371 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2373 * The distribution no longer contains any files with names longer than 14
2374 characters.
2376 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2377 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2379 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2380 \f
2381 Version 1.04
2383 * The configuration process has changed quite a bit. The `configure'
2384 script is now used just like the configuration scripts for other GNU
2385 packages. The `sysdeps' directory hierarchy is much rearranged.
2386 The file `INSTALL' explains the new scheme in detail.
2388 * The header files no longer need to be processed into ANSI C and
2389 traditional C versions. There is just one set of files to install, and
2390 it will work with ANSI or old C compilers (including `gcc -traditional').
2392 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2393 MIPS DECStation running Ultrix 4.
2395 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2396 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2397 made itself into a shared library.
2399 * Yet further improved support for the i386, running 4.3 BSD-like systems
2400 (such as Mach 3 with the Unix single-server), or System V.
2402 * New function `strncasecmp' to do case-insensitive string comparison
2403 with limited length.
2405 * New function `strsep' is a reentrant alternative to `strtok'.
2407 * New functions `scandir' and `alphasort' for searching directories.
2409 * New function `setenv' is a better interface to `putenv'.
2411 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2412 function for traversing a directory tree.
2414 * The GNU obstack package is now also part of the C library.
2415 The new function `open_obstack_stream' creates a stdio stream that
2416 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2417 formatted output directly to an obstack.
2419 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2420 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2422 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2424 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2425 things to your strings.
2427 * There are some new test programs: test-fseek, testmb, and testrand.
2429 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2430 These ports are not finished, but are a good starting place for really
2431 supporting those systems.
2433 * `/etc/localtime' is now the standard location for the file that says what
2434 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2435 This follows the general principle that `/etc' is the place for all local
2436 configuration files.
2438 * The C library header files now use `extern "C"' when used by the C++
2439 compiler, so the C library should now work with C++ code.
2441 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2442 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2443 in <strings.h>.)
2445 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2446 function which uses the `merge sort' algorithm, and is said to be
2447 significantly faster than the old GNU `qsort' function. Merge sort is
2448 now the standard `qsort' function. The new algorithm can require a lot
2449 of temporary storage; so, the old sorting function is called when the
2450 required storage is not available.
2452 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2453 provides the Unix `crypt' function, plus some other entry points.
2455 * The code and header files taken from 4.4 BSD have been updated with the
2456 latest files released from Berkeley.
2457 \f
2458 ----------------------------------------------------------------------
2459 Copyright information:
2461 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2463 Permission is granted to anyone to make or distribute verbatim copies
2464 of this document as received, in any medium, provided that the
2465 copyright notice and this permission notice are preserved,
2466 thus giving the recipient permission to redistribute in turn.
2468 Permission is granted to distribute modified versions
2469 of this document, or of portions of it,
2470 under the above conditions, provided also that they
2471 carry prominent notices stating who last changed them.
2472 \f
2473 Local variables:
2474 version-control: never
2475 fill-column: 76
2476 End: