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1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
7 \f
8 Version 2.20
10 * The following bugs are resolved with this release:
12 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
13 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16198, 16284, 16287,
14 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516, 16532, 16545,
15 16564, 16574, 16599, 16600, 16609, 16610, 16611, 16613, 16619, 16623,
16 16629, 16632, 16634, 16639, 16642, 16648, 16649, 16670, 16674, 16677,
17 16680, 16681, 16683, 16689, 16695, 16701, 16706, 16707, 16712, 16713,
18 16714, 16724, 16731, 16739, 16740, 16743, 16754, 16758, 16759, 16760,
19 16770, 16786, 16789, 16791, 16796, 16799, 16800, 16815, 16823, 16824,
20 16831, 16838, 16849, 16854, 16876, 16877, 16878, 16882, 16885, 16888,
21 16890, 16912, 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932,
22 16943, 16958, 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996,
23 17009, 17022, 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069,
24 17075, 17079, 17084.
26 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
28 * The minimum Linux kernel version that this version of the GNU C Library
29 can be used with is 2.6.32.
31 * Running the testsuite no longer terminates as soon as a test fails.
32 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
33 with PASS or FAIL lines for individual tests. A summary of the results is
34 printed, including a list of failing lists, and "make check" exits with
35 error status if there were any unexpected failures. "make check
36 stop-on-test-failure=y" may be used to keep the old behavior.
38 * The am33 port, which had not worked for several years, has been removed
39 from ports.
41 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
42 supported; they now act the same as _DEFAULT_SOURCE (but generate a
43 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
44 conflicted with POSIX (support for which was removed in 2.19), the
45 interfaces those macros enabled remain available when compiling with
46 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
47 test macros defined.
49 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
51 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
52 This may improve lock scaling of existing programs on TX capable systems.
53 The lock elision code is only built with --enable-lock-elision=yes and
54 then requires a GCC version supporting the TX builtins. With lock elision
55 default mutexes are elided via __builtin_tbegin, if the cpu supports
56 transactions. By default lock elision is not enabled and the elision code
57 is not built.
59 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
60 copy the path argument. This allowed programs to cause posix_spawn to
61 deference a dangling pointer, or use an unexpected pathname argument if
62 the string was modified after the posix_spawn_file_actions_addopen
63 invocation.
64 \f
65 Version 2.19
67 * The following bugs are resolved with this release:
69 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
70 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
71 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
72 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
73 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
74 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
75 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
76 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
77 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
78 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
79 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
80 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
81 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
82 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
83 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
84 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
85 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
86 16431, 16453, 16474, 16506, 16510, 16529
88 * Slovenian translations for glibc messages have been contributed by the
89 Translation Project's Slovenian team of translators.
91 * The public headers no longer use __unused nor __block. This change is to
92 support compiling programs that are derived from BSD sources and use
93 __unused internally, and to support compiling with Clang's -fblock
94 extension which uses __block.
96 * CVE-2012-4412 The strcoll implementation caches indices and rules for
97 large collation sequences to optimize multiple passes. This cache
98 computation may overflow for large collation sequences and may cause a
99 stack or buffer overflow. This is now fixed to use a slower algorithm
100 which does not use a cache if there is an integer overflow.
102 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
103 rules for large collation sequences to optimize multiple passes and falls
104 back to alloca if malloc fails, resulting in a possible stack overflow.
105 The implementation now falls back to an uncached collation sequence lookup
106 if malloc fails.
108 * CVE-2013-4788 The pointer guard used for pointer mangling was not
109 initialized for static applications resulting in the security feature
110 being disabled. The pointer guard is now correctly initialized to a
111 random value for static applications. Existing static applications need
112 to be recompiled to take advantage of the fix (bug 15754).
114 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
115 to the d_name member of struct dirent, or omit the terminating NUL
116 character. (Bugzilla #14699).
118 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
119 aligned_alloc functions could allocate too few bytes or corrupt the
120 heap when passed very large allocation size values (Bugzilla #15855,
121 #15856, #15857).
123 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
124 for AF_INET6 has been fixed (Bugzilla #16072).
126 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
127 pap_CW, quz_PE, the_NP.
129 * Substantially revised locales: gd_GB, ht_HT
131 * The LC_ADDRESS field was updated to support country_car for almost all
132 supported locales.
134 * ISO 1427 definitions were updated.
136 * ISO 3166 definitions were updated.
138 * The localedef utility now supports --big-endian and --little-endian
139 command-line options to generate locales for a different system from that
140 for which the C library was built.
142 * Binary locale files now only depend on the endianness of the system for
143 which they are generated and not on other properties of that system. As a
144 consequence, binary files generated with new localedef may be incompatible
145 with old versions of the GNU C Library, and binary files generated with
146 old localedef may be incompatible with this version of the GNU C Library,
147 in the following circumstances:
149 + Locale files may be incompatible on m68k systems.
151 + Locale archive files (but not separate files for individual locales) may
152 be incompatible on systems where plain "char" is signed.
154 * The configure option --disable-versioning has been removed. Builds with
155 --disable-versioning had not worked for several years.
157 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
158 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
160 * SystemTap probes for malloc have been introduced.
162 * SystemTap probes for slow multiple precision fallback paths of
163 transcendental functions have been introduced.
165 * Support for powerpc64le has been added.
167 * The soft-float powerpc port now supports e500 processors.
169 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
171 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
172 set of header declarations that are enabled by default, even when other
173 feature test macros or compiler options such as -std=c99 would otherwise
174 disable some of those declarations.
176 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
177 conflict with POSIX. The libbsd-compat library (which was a dummy library
178 that did nothing) has also been removed.
180 * Preliminary documentation about Multi-Thread, Async-Signal and
181 Async-Cancel Safety has been added.
183 * Change of ABI data structures for s390 and s390x:
184 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
185 allow for future hardware extensions. All library functions that accept or
186 return these structures were versioned in order to provide backwards
187 compatibility with existing code. However, not all cases can be handled
188 with interface versioning. If an application embeds either structure into
189 another structure and that structure is passed to another compilation unit
190 which expects the newer larger-sized object then any access to the new
191 fields will result in undefined behaviour. Similarly any access to fields
192 that were moved by the enlarging of the structures will cause undefined
193 behaviour. To fix the undefined behaviour all objects that are part of the
194 final in-memory image must agree on the size of structures, and this may
195 require recompilation.
196 \f
197 Version 2.18
199 * The following bugs are resolved with this release:
201 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
202 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
203 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
204 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
205 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
206 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
207 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
208 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
209 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
210 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
211 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
212 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
213 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
214 15759.
216 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
217 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
218 Distributions can re-enable building and using pt_chown via the new configure
219 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
220 considerable security risks and should only be used if the distribution
221 understands and accepts the risks.
223 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
224 #15078).
226 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
227 fixed (Bugzilla #15330).
229 * Add support for calling C++11 thread_local object destructors on thread
230 and program exit. This needs compiler support for offloading C++11
231 destructor calls to glibc.
233 * Improved worst case performance of libm functions with double inputs and
234 output.
236 * Support for priority inherited mutexes in pthread condition variables on
237 non-x86 architectures.
239 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
241 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
243 * Optimized string functions for ARM. Implemented by Will Newton and
244 Richard Henderson.
246 * Optimized libm functions for SPARC. Implemented by David S. Miller.
248 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
249 Richard Henderson.
251 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
252 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
254 * Added a benchmark framework to track performance of functions in glibc.
256 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
257 It is based on draft TS 18661 and currently enabled as a GNU extension.
259 * On Linux, the clock function now uses the clock_gettime system call
260 for improved precision, rather than old times system call.
262 * Added support for version-3 tz format files. This is needed when using
263 the tz database release 2013e or later, and affects a few unusual cases --
264 currently only TZ='America/Godthab' for time stamps after 2037.
266 * Added new API functions pthread_getattr_default_np and
267 pthread_setattr_default_np to get and set the default pthread
268 attributes of a process.
270 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
271 This may improve lock scaling of existing programs on TSX capable systems.
272 When the --enable-lock-elision=yes parameter is specified at configure
273 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
274 mutexes.
276 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
277 availability). Implemented by Ryan S. Arnold.
279 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
280 \f
281 Version 2.17
283 * The following bugs are resolved with this release:
285 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
286 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
287 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
288 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
289 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
290 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
291 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
292 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
293 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
294 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
295 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
296 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
297 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
298 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
299 14879, 14889, 14893, 14898, 14914.
301 * Optimization of memcpy for MIPS.
303 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
304 EMFILE has been fixed (Bugzilla #14889).
306 * The add-on ports collection is now distributed in the "ports" subdirectory
307 of the main GNU C Library distribution, rather than separately.
309 * Port to ARM AArch64 contributed by Linaro.
311 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
312 Optimized versions of memcpy, memset, and memcmp added for System z10 and
313 zEnterprise z196.
314 Implemented by Andreas Krebbel.
316 * The new function secure_getenv allows secure access to the environment,
317 returning NULL if running in a SUID/SGID process. This function replaces
318 the internal function __secure_getenv.
320 * SystemTap static probes have been added into the dynamic linker.
321 Implemented by Gary Benson.
323 * Optimizations of string functions strstr, strcasestr and memmem.
324 Implemented by Maxim Kuvyrkov.
326 * The minimum Linux kernel version that this version of the GNU C Library
327 can be used with is 2.6.16.
329 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
330 powerpc POWER7. Implemented by Will Schmidt.
332 * New configure option --disable-nscd builds the C library such that it
333 never attempts to contact the Name Service Caching Daemon (nscd).
334 New configure option --disable-build-nscd avoids building nscd itself;
335 this is the default if --disable-nscd is used.
337 * Improved support for cross-compilation, including cross-testing and
338 bootstrap builds without a previously built glibc.
340 * Several testsuite tests are now able to test multiple IFUNC variants of an
341 interface, rather than just testing the one that would be chooen by
342 default.
344 * New configure options --with-bugurl and --with-pkgversion, for
345 distributors to use to embed their bug-reporting and package version
346 information in --help and --version output.
348 * The ttyname and ttyname_r functions on Linux now fall back to searching for
349 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
350 allows creation of chroots without the procfs mounted on /proc.
352 * The `crypt' function now fails if passed salt bytes that violate the
353 specification for those values. On Linux, the `crypt' function will
354 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
355 enabled, and fail on encrypted strings using the MD5 or DES algorithm
356 when the mode is enabled.
358 * The `clock_*' suite of functions (declared in <time.h>) is now available
359 directly in the main C library. Previously it was necessary to link with
360 -lrt to use these functions. This change has the effect that a
361 single-threaded program that uses a function such as `clock_gettime' (and
362 is not linked with -lrt) will no longer implicitly load the pthreads
363 library at runtime and so will not suffer the overheads associated with
364 multi-thread support in other code such as the C++ runtime library.
366 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
367 sat_IN, and szl_PL.
368 \f
369 Version 2.16
371 * The following bugs are resolved with this release:
373 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
374 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
375 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
376 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
377 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
378 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
379 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
380 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
381 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
382 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
383 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
384 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
385 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
386 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
387 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
388 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
389 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
390 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
391 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
392 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
393 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
394 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
395 14277, 14278.
397 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
398 configuring glibc with:
399 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
400 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
401 Implemented by H.J. Lu.
403 * ISO C11 support:
405 + define static_assert
407 + do not declare gets
409 + declare at_quick_exit and quick_exit also for ISO C11
411 + aligned_alloc. NB: The code is deliberately allows the size parameter
412 to not be a multiple of the alignment. This is a moronic requirement
413 in the standard but it is only a requirement on the caller, not the
414 implementation.
416 + timespec_get added
418 + uchar.h support added
420 + CMPLX, CMPLXF, CMPLXL added
422 Implemented by Ulrich Drepper.
424 * Support for the IA-64 has been moved to ports.
426 * Remove support for anything but ELF binary format
428 * Checking versions of poll, ppoll added.
429 Implemented by Ulrich Drepper.
431 * More generic and 64-bit performance optimizations to math functions.
432 Implemented by Ulrich Drepper.
434 * New configure option --enable-obsolete-rpc makes the deprecated RPC
435 headers and functions available at compile time as they were before
436 version 2.14. This option will be removed at some time in the future
437 after the TI-RPC library becomes fully sufficient for the needs of
438 existing applications.
440 * Compatibility code for Linux kernel versions before 2.4 has been removed.
441 Note that glibc is not expected to work with any Linux kernel version
442 before 2.6.
444 * New header <sys/auxv.h> and function getauxval allowing easy access to
445 the AT_* key-value pairs passed from the Linux kernel. The header also
446 defines the HWCAP_* bits associated with the AT_HWCAP key.
448 * New locales: mag_IN
450 * New configure option --enable-systemtap builds SystemTap static probes
451 into libc for setjmp and longjmp and into libpthread for various operations.
452 So far the setjmp/longjmp probes and some of the libpthread probes are
453 provided only for i*86 and x86_64.
454 Implemented by Roland McGrath and Rayson Ho.
456 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
458 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
459 and Will Schmidt.
461 * More optimized functions for SPARC. Implemented by David S. Miller.
463 * Improved support for cross-compilation, especially bootstrap builds
464 without a previously built glibc.
466 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
467 Chris Metcalf from Tilera.
469 * Support for the old ARM ABI has been removed from ports. Only the EABI is
470 now supported for ARM processors.
472 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
473 as the name of the dynamic linker, to distinguish it from the
474 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
476 * Support for CRIS has been removed from ports.
478 * A new class of installed header has been documented for low-level
479 platform-specific functionality. PowerPC added the first instance with a
480 function to provide time base register access. Contributed by Tulio
481 Magno Quites Machado Filho.
483 * ix86 configurations now install header files that are consistent with
484 what x86-64 configurations install. These same header files can be used
485 for -m32, -m64, or -mx32 builds.
486 Contributed by H.J. Lu.
488 * Math library bug fixes. A thorough audit of all open math library bugs was
489 conducted by Joseph Myers. Significant progress was made on many math
490 library bugs resulting in more accurate exceptions and function results.
491 Many thanks to all those that contributed including Andreas Jaeger for his
492 patch review and work on the x87 trigonometric instruction issues.
494 * Timezone data is no longer installed. Timezone-related binaries and scripts
495 will continue to be installed. Users should obtain their timezone data from
496 their distribution provider or from the tzdata package at
497 <ftp://munnari.oz.au/pub/>.
498 \f
499 Version 2.15
501 * The following bugs are resolved with this release:
503 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
504 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
505 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
506 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
507 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
508 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
509 13484, 13506, 13515, 13523, 13524, 13538, 13540
511 * New program pldd to list loaded object of a process
512 Implemented by Ulrich Drepper.
514 * Add nss_db support back to glibc. No more dependency on Berkeley db
515 and support for initgroups lookups.
516 Implemented by Ulrich Drepper.
518 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
519 Contributed by HJ Lu.
521 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
522 Contributed by HJ Lu.
524 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
525 on x86-32 and x86-64.
526 Contributed by Liubov Dmitrieva.
528 * Optimized strchr and strrchr for SSE on x86-32.
529 Contributed by Liubov Dmitrieva.
531 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
532 for x86-64 and x86-32.
533 Contributed by Liubov Dmitrieva.
535 * New interfaces: scandirat, scandirat64
536 Implemented by Ulrich Drepper.
538 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
539 Implemented by Ulrich Drepper.
541 * nscd now also caches the netgroup database.
542 Implemented by Ulrich Drepper.
544 * Integrate libm with gcc's -ffinite-math-only option.
545 Implemented by Ulrich Drepper.
547 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
548 to math functions. Implemented by Ulrich Drepper.
550 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
551 Implemented by Ulrich Drepper.
553 * New Linux interfaces: process_vm_readv, process_vm_writev
555 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
556 Implemented by Ulrich Drepper.
558 * Optimized nearbyint and strcasecmp for PPC.
559 Implemented by Adhemerval Zanella.
561 * New locales: bho_IN, unm_US, es_CU, ta_LK
562 \f
563 Version 2.14
565 * The following bugs are resolved with this release:
567 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
568 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
569 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
570 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
571 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
572 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
573 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
574 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
575 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
576 12795, 12811, 12813, 12814, 12841
578 * The RPC implementation in libc is obsoleted. Old programs keep working
579 but new programs cannot be linked with the routines in libc anymore.
580 Programs in need of RPC functionality must be linked against TI-RPC.
581 The TI-RPC implementation is IPv6 enabled and there are other benefits.
583 Visible changes of this change include (obviously) the inability to link
584 programs using RPC functions without referencing the TI-RPC library and the
585 removal of the RPC headers from the glibc headers.
586 Implemented by Ulrich Drepper.
588 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
589 syncfs, setns, sendmmsg
591 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
592 yue_HK, lij_IT, mhr_RU
594 * New encodings: CP770, CP771, CP772, CP773, CP774
596 * New program sotruss to trace calls through PLTs
597 Implemented by Ulrich Drepper.
599 * The malloc hook implementation is marked deprecated and will be removed
600 from the default implementation in the next version. The design never
601 worked ever since the introduction of threads. Even programs which do
602 not create threads themselves can use multiple threads created internally.
603 \f
604 Version 2.13
606 * The following bugs are resolved with this release:
608 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
609 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
610 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
611 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
612 12378, 12394, 12397
614 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
616 * POWER7 optimizations: memset, memcmp, strncmp
618 * New optimized string functions for x86-64: strnlen (SSE2),
619 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
620 Implemented by Ulrich Drepper.
621 \f
622 Version 2.12
624 * The following bugs are resolved with this release:
626 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
627 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
628 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
629 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
630 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
631 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
632 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
633 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
635 * New interfaces: pthread_getname_np, pthread_setname_np
637 * New Linux interface: recvmmsg
639 * STT_GNU_IFUNC implemented for Sparc by David Miller.
641 * The dynamic linker now recognizes supported ABI versions from the
642 EI_ABIVERSION field in the ELF header.
643 Implemented by Ulrich Drepper.
645 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
646 will not be used to fill in password fields in the passwd.byname replies.
647 Instead it is used to synthesize the shadow.byname table, should it be
648 missing. This is a useful mode in some installations involving Solaris.
649 Implemented by Ulrich Drepper.
651 * New locales: kok_IN, sq_MK, cv_RU
652 \f
653 Version 2.11
655 * The following bugs are resolved with this release:
657 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
658 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
659 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
660 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
661 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
662 10789, 10817, 10823, 10840, 10847
664 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
665 mkostemps64
666 Implemented by Ulrich Drepper.
668 * Checking version of longjmp added that fails if an uninitialized stack
669 frame would be created. Implemented by Ulrich Drepper.
671 * STT_GNU_IFUNC is now supported in static executables.
672 Implemented by H.J. Lu.
674 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
676 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
677 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
678 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
679 Contributed by H.J. Lu.
681 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
682 Implemented by Ulrich Drepper.
684 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
685 strstr, strcasestr.
686 Contributed by H.J. Lu.
688 * Support for fma instruction in AVX on x86-64.
689 Implemented by H.J. Lu and Ulrich Drepper.
691 * AVX support in x86-64 auditing support in ld.so.
692 Implemented by H.J. Lu.
694 * STB_GNU_UNIQUE support added.
695 Implemented by Ulrich Drepper.
697 * Implement second fallback mode for optimized DNS lookup for even more
698 broken environments. If two requests from the same port are not
699 handled correctly close the socket and open a new one before sending
700 the second request. The 'single-request-reopen' option in /etc/resolv.conf
701 can be used to select this mode right away, instead of rediscovering the
702 necessity is every process again.
703 Implemented by Ulrich Drepper.
705 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
706 Implemented by Adam Tkac.
708 * Optimized iconv conversions for S390x.
709 Implemented by Andreas Krebbel.
711 * Using condvars with PI mutexes is now more efficient due to kernel
712 support for requeueing to PI futexes. NPTL support added for x86-64.
713 Implemented by Ulrich Drepper.
715 * New locales: ps_AF, my_MM
716 \f
717 Version 2.10
719 * The following bugs are resolved with this release:
721 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
722 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
723 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
724 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
725 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
727 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
728 Implemented by Ulrich Drepper.
730 * New Linux interfaces: accept4, fallocate, fallocate64.
731 Implemented by Ulrich Drepper.
733 * Correct declarations of string function when used in C++ code. This
734 could lead to compile errors for invalid C++ code.
736 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
737 now in POSIX.
739 * New POSIX 2008 interface: psiginfo
740 Implemented by Ulrich Drepper.
742 * New ISO C++1x interfaces: quick_exit, at_quick_exit
743 Implemented by Ulrich Drepper.
745 * Support for selecting between multiple function definitions at runtime
746 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
748 * The libcrypt library can now use the hash function implementations in
749 NSS. Implemented by Ulrich Drepper.
751 * The malloc implementation can be compiled to be less memory efficient
752 but higher performing in multi-threaded programs.
753 Implemented by Ulrich Drepper.
755 * New locales: nan_TW@latin, ks_IN
757 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
758 Implemented by Ulrich Drepper.
760 * Extended printf hook support. It is possible to use user-defined types
761 and extend existing format specifiers.
762 Implemented by Ulrich Drepper.
764 * Handling for group shadow files has been added.
765 Implemented by Ulrich Drepper.
767 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
768 servers (the case, e.g., for some people using the built-in DNS
769 server in ADSL modems/routers). There is a once-per-process timeout
770 in case of a broken server. To avoid it, users can run nscd or put
771 'options single-request' in /etc/resolv.conf.
772 Implemented by Ulrich Drepper.
773 \f
774 Version 2.9
776 * The following bugs are resolved with this release:
778 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
779 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
780 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
781 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
782 6968, 6974, 6980, 6995, 7008, 7009, 7029
784 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
785 up at the same time. Implemented by Ulrich Drepper.
787 * TLS descriptors for LD and GD on x86 and x86-64.
788 Implemented by Alexandre Oliva.
790 * getaddrinfo now handles DCCP and UDPlite.
791 Implemented by Ulrich Drepper.
793 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
794 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
795 Implemented by Ulrich Drepper.
797 * New implementation of memmem, strstr, and strcasestr which is O(n).
798 Implemented by Eric Blake.
800 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
802 * Implement "e" option for popen to open file descriptor with the
803 close-on-exec flag set. Implemented by Ulrich Drepper.
805 * Implement "b" mode for fmemopen. In this mode writes writes don't
806 implicitly add a NUL byte and seeks from the end of the buffer really
807 use the buffer end, not the string length as the basis.
808 Implemented by Ulrich Drepper.
810 * Many functions, exported and internal, now atomically set the close-on-exec
811 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
813 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
814 Sinhala)
815 Implemented by Pravin Satpute.
817 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
818 \f
819 Version 2.8
821 * The following bugs are resolved with this release:
823 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
824 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
825 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
826 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
827 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
828 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
829 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
831 * New locales: bo_CN, bo_IN, shs_CA.
833 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
835 * Sorting rules for some Indian languages (Devanagari and Gujarati).
836 Implemented by Pravin Satpute.
838 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
840 * nscd caches now all timeouts for DNS entries
841 Implemented by Ulrich Drepper.
843 * nscd is more efficient and wakes up less often.
844 Implemented by Ulrich Drepper.
846 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
847 vdprintf, and obstack_vprintf.
848 Implemented by Jakub Jelinek.
850 * Faster memset for x86-64.
851 Implemented by Harsha Jagasia and H.J. Lu.
853 * Faster memcpy on x86.
854 Implemented by Ulrich Drepper.
856 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
857 Implemented by Ulrich Drepper.
859 * Faster sqrt and sqrtf implemention for some PPC variants.
860 Implemented by Steven Munroe.
861 \f
862 Version 2.7
864 * The following bugs are resolved with this release:
866 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
867 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
868 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
869 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
870 5071, 5103, 5104, 5112, 5113, 5184, 5186
872 * More checking functions: fread, fread_unlocked, open*, mq_open.
873 Implemented by Jakub Jelinek and Ulrich Drepper.
875 * Extend fortification to C++. Implemented by Jakub Jelinek.
877 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
878 by not recognizing 'a' as a modifier when those specs are requested.
879 Implemented by Jakub Jelinek.
881 * PPC optimizations to math and string functions.
882 Implemented by Steven Munroe.
884 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
885 options to be passed. Implemented by Ulrich Drepper.
887 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
889 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
890 Implemented by Ulrich Drepper.
892 * Handle private futexes in the NPTL implementation.
893 Implemented by Jakub Jelinek and Ulrich Drepper.
895 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
896 Implemented by Roland McGrath and Ulrich Drepper.
898 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
900 * SHA-256 and SHA-512 based password encryption.
901 Implemented by Ulrich Drepper.
903 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
904 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
905 yo_NG.
907 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
908 Implemented by Ulrich Drepper.
909 \f
910 Version 2.6
912 * The following bugs are resolved with this release:
914 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
915 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
916 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
917 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
918 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
919 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
920 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
921 4702, 4858
923 * New Linux interfaces: epoll_pwait, sched_getcpu.
925 * New generic interfaces: strerror_l.
927 * nscd can now cache the services database. Implemented by Ulrich Drepper.
928 \f
929 Version 2.5
931 * The following bugs are resolved with this release:
933 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
934 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
935 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
936 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
937 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
938 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
939 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
940 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
941 3225, 3251, 3252, 3253, 3273
943 * For Linux, the sorting of addresses returned by getaddrinfo now also
944 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
945 Implemented by Ulrich Drepper.
947 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
948 Implemented by Ulrich Drepper.
950 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
952 * New iconv module for MIK. Contributed by Alexander Shopov.
954 * For sites with broken group and/or passwd database, the auto-propagate
955 option of nscd can prevent creating ID lookup entries from the results
956 of a name lookup and vice versa. This usually is no problem but some
957 site might have problems with the default behavior.
958 Implemented by Ulrich Drepper.
960 * Iterating over entire database in NIS can be slow. With the
961 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
962 to trade time for memory. The entire database will be read at once.
963 Implemented by Ulrich Drepper.
965 * The interfaces introduced in RFC 3542 have been implemented by
966 Ulrich Drepper.
968 * Support for the new ELF hash table format was added by Ulrich Drepper.
970 * Support for priority inheritance mutexes added by Jakub Jelinek and
971 Ulrich Drepper.
973 * Support for priority protected mutexes added by Jakub Jelinek.
975 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
976 or_IN, csb_PL, fy_NL, sr_ME.
977 \f
978 Version 2.4
980 * More overflow detection functions.
982 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
983 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
985 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
986 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
987 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
988 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
989 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
990 by Masahide Washizawa.
992 * It is now possible to install audit libraries for the dynamic linker using
993 LD_AUDIT. Implemented by Ulrich Drepper.
995 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
996 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
997 For a libc and libpthread that works well on Linux 2.4 kernels, we
998 recommend using the stable 2.3 branch.
1000 * The new function open_wmemstream acts like open_memstream,
1001 but uses a wchar_t wide character buffer.
1003 * The new function ppoll is an improved version of poll, similar to pselect.
1005 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1006 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1007 renameat, unlinkat, linkat, symlinkat, readlinkat.
1009 * New Linux kernel system calls: unshare,
1010 inotify_init, inotify_add_watch, inotify_rm_watch.
1012 * The euidaccess function is now also known by the alias eaccess,
1013 for compatibility with some other systems.
1015 * Timezone data updated to 2006b version.
1016 \f
1017 Version 2.3.6
1019 * The following bugs are resolved with this release:
1021 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1022 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1023 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1024 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1025 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1026 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1028 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1030 * As of this release, GCC 4 can be used to compile the C Library.
1032 * Timezone data updated to 2005m version.
1033 \f
1034 Version 2.3.5
1036 * The following bugs are resolved with this release:
1038 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1039 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1040 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1041 777, 787, 821, 822, 823, 825
1043 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1044 \f
1045 Version 2.3.4
1047 * Support for RFC 3678. Real implementations exist only for Linux so far.
1048 Implemented by Ulrich Drepper.
1050 * nscd can now cache entries persistently. Expiring entries are reloaded.
1051 For speedups the cache can be shared in memory with client processes.
1052 Implemented by Ulrich Drepper.
1054 * nscd can now perform SELinux checks.
1055 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1057 * getaddrinfo queries are now cached. Canonical name lookup is performed
1058 efficiently.
1059 Implemented by Ulrich Drepper.
1061 * The nothrow function attribute is used when headers are used by gcc when
1062 compiling C code. This can avoid significant amounts of exception
1063 handling data.
1065 * The malloc functions perform more error checking and are stricter when
1066 it comes to reacting on errors. The default action is to terminate
1067 the process after showing an error message. Implemented by Ulrich Drepper.
1069 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1070 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1072 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1073 namespaces using the new function dlmopen(). This feature is of course,
1074 like most other dynamic loading functionality, not available in statically
1075 linked applications. Implemented by Ulrich Drepper.
1077 * Low-overhead boundary checking variants of string and some stdio functions
1078 were added. These are to be used in conjunction with a gcc patch by
1079 Jakub Jelinek which adds calls to these functions if possible.
1080 Implemented by Jakub Jelinek and Ulrich Drepper.
1082 * Old code for several operating systems and machine architectures that
1083 have not been in working condition in a long time have been removed from
1084 the main source tree maintained by the GNU C Library's maintainers.
1085 These files are now reside in the separate `ports' source module
1086 that is usable as an add-on when building the library.
1087 \f
1088 Version 2.3.3
1090 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1091 interrogate the dynamic linker, compatible with the Solaris interface.
1093 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1094 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1096 * getifaddrs now uses the netlink interface on Linux to get its information.
1097 Implemented by Thorsten Kukuk.
1099 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1100 Implemented by Ulrich Drepper.
1102 * support for non-executable stacks on x86 has been added. Changes mostly
1103 by Roland McGrath.
1105 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1106 and Ulrich Drepper.
1108 * getaddrinfo now performs destination address selection according to
1109 RFC 3484.
1110 \f
1111 Version 2.3.2
1113 * Thread-safe interfaces for many functions that access locale data
1114 were added in version 2.3, but these features were omitted from NEWS.
1115 Many functions have variants with an `_l' suffix that take a `locale_t'
1116 object as a parameter rather than consulting the current locale.
1117 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1118 create and maintain `locale_t' objects. Additionally, the new function
1119 `uselocale' sets "the current locale" (as used by functions not so
1120 parameterized) set for an individual thread. These features were added
1121 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1123 * The functions getresuid, getresgid, setresuid, and setresgid, which
1124 have long been available on Linux, are now declared in <unistd.h>
1125 and are now also available on the Hurd.
1127 * ELF thread-local storage support (TLS) now works on x86-64.
1129 * The new dynamic string token $LIB is expanded in shared library names.
1130 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1132 * Aldy Hernandez contributed complete software floating point support for
1133 PowerPC machines with no FPU.
1135 * fexecve is implemented on Linux.
1137 * The `btowc' function should work at least twice as fast due to
1138 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1140 * With approriate thread add-ons cancelable functions are now implemented
1141 in libc.so as well. No need to call the function in libpthread. This
1142 change allowed to finally disable the incorrect and expensive handling
1143 of weak definition in ld.so.
1145 * Yet more PLT entries in libc.so have been removed. We finally arrived
1146 at the bare minimum. Startup times improved appropriately.
1148 * Support for the new Linux/x86 system call interface was added. The
1149 AT_SYSINFO auxiliary vector entry is recognized and handled.
1150 \f
1151 Version 2.3
1153 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1154 charsets.
1156 * iconv (the program and the interface) now accepts empty names (excluding
1157 options like //TRANSLIT) to mean "use charset of current locale".
1159 * localedef can now transliterate characters in strings which are not in
1160 the provided charmap. The information from the input locale is used.
1162 * Prelinking support was added for ELF targets. This requires additional
1163 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1165 * Read-only stdio streams now use mmap to speed up operation by eliminating
1166 copying and buffer underflows. To use add 'm' to the mode string of
1167 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1169 * The malloc functions were completely rewritten by Wolfram Gloger based
1170 on Doug Lea's malloc-2.7.0.c.
1172 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1173 implementation of regex.
1175 * Bruno Haible upgraded the iconv and locale implementation to support
1176 Unicode 3.2.
1178 * Contents of the LC_* and LANG environment variables in the CEN style are
1179 not recognized anymore. It never was used. Change by Ulrich Drepper.
1181 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1182 thread-local storage (TLS) ABI on some platforms.
1183 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1185 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1186 EUC-JISX0213, and TSCII.
1188 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1189 BSD-compatible interface for getting all network interface addresses.
1190 Implementation for IPv4 by Roland McGrath.
1192 * Loading of locale data is faster due to the introduction of a locale
1193 archive. Implemented by Roland McGrath and Ulrich Drepper.
1195 * Startup times are significantly reduced by not using exported functions
1196 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1197 and Ulrich Drepper.
1199 * Steven Munroe contributed a port to PowerPC64/Linux.
1200 \f
1201 Version 2.2.6
1203 * The Hurd now uses the GNU libio implementation of stdio rather than the
1204 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1206 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1207 with the same behavior as the Linux system call of the same name.
1208 \f
1209 Version 2.2.5
1211 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1212 128-bit long double format.
1214 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1215 IBM1161, and IBM1162 charsets.
1217 * Andreas Jaeger contributed a port to x86-64/Linux.
1219 * Peter Bruin contributed a port to PowerPC/Hurd.
1221 * libc functions using I/O streams now can handle wide-oriented streams
1222 as well.
1224 * optimizations in the dynamic linker. Binaries created by recent binutils
1225 versions start up quicker due to reduced time spent on relocations.
1227 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1228 \f
1229 Version 2.2.4
1231 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1232 asinh, atanh, j0 for the 128-bit long double format.
1234 * Bruno Haible updated all the code handling Unicode in some form to
1235 support Unicode 3.1.
1237 * Speed of regex for single-byte locales is back to previous levels.
1238 Patch by Isamu Hasegawa.
1240 * Alpha, SPARC, and IA-64 now also using floating stacks.
1242 * Startup time of internationalized applications greatly improved through
1243 iconv cache. Use iconvconfig to generate the cache file.
1244 Contributed by Ulrich Drepper.
1246 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1247 severe performance problems. Patch by David Mosberger.
1249 * The Hurd port got a lot more functionality like AIO, various stdio
1250 extensions, etc. Mainly done by Roland McGrath.
1252 * mtrace can now lookup symbols in shared libraries.
1253 \f
1254 Version 2.2.3
1256 * Intel's IA-64 math library is largely integrated. It provides fast and
1257 accurate implementatations for most basic and standard math functions
1258 in float, double, and long double format.
1260 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1261 and asin for the 96-bit long double format and asin, log, tan for the
1262 128-bit long double format.
1264 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1265 The basic double functions exist today. Contributed by Abraham Ziv
1266 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1267 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1269 * An asynchronous name lookup library was added. The interface is designed
1270 after POSIX AIO. The proposal was circulated beforehand to get comments.
1271 No negative ones came in. Implemented by Ulrich Drepper.
1273 * Port to S390/64bit contributed by Martin Schwidefsky
1274 <schwidefsky@de.ibm.com>.
1276 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1277 of functions for Linux/IA-64.
1279 * The RPC code is now thread safe. Threads can now use the same service
1280 of different services at the same time. Patch by Eric Norum
1281 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1283 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1284 family of functions for Linux/S390.
1286 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1287 of functions for Linux/x86.
1289 * Port to Linux/CRIS contributed by Axis Communications.
1290 \f
1291 Version 2.2.2
1293 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1294 we can now check for namespace violations and missing declarations. The
1295 result is that almost all headers are now Unix-compliant (as defined in
1296 the upcoming XPG6). The negative side is that some programs might need
1297 corrections, too, if they depend on the incorrect form of the headers in
1298 previous versions which defined too many symbols and included too many
1299 other headers.
1301 * regex now handles multibyte character sets correctly.
1302 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1304 * iconv (the program) does now conform to the upcoming XPG6 and handles
1305 charmaps. Instead of the charset names the path of charmaps can be
1306 provided and the conversion happens based on this data.
1307 Contributed by Ulrich Drepper.
1309 * The locale program now provides detailed information about the installed
1310 locales. While
1312 locale -a
1314 only lists the names of the supported locales
1316 locale -a --verbose
1318 provides details such as country, language, and codeset name.
1319 Contributed by Ulrich Drepper.
1320 \f
1321 Version 2.2.1
1323 * The gencat program now parses the input file according to the charset
1324 selected by the LC_CTYPE category. This is important for stateful
1325 character sets. To make generating catalogs easier there is a way
1326 to overwrite the charset selected by the locale: before the first
1327 message or $ quote line the catalog can contain a line like
1329 $ codeset=ISO-8859-2
1331 to select the charset (ISO-8859-2 in this case).
1333 Implemented by Shinya Hanataka and Ulrich Drepper.
1335 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1336 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1337 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1339 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1340 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1342 * The LANGUAGE environment variable is now ignored unless the locale is
1343 changed from the default "C" locale.
1345 * The usual bug fixes.
1346 \f
1347 Version 2.2
1349 * Greg McGary added runtime support for bounds checking using gcc's
1350 new -fbounded-pointers option. ix86 target is complete. PowerPC
1351 is in progress.
1353 * Thorsten Kukuk added secure mode support to nscd.
1355 * The Berkeley db libraries have been removed.
1357 Related, the nss_db module is now in a separate package since it
1358 obviously requires a database library being available.
1360 * Wide character I/O streams implemented by Ulrich Drepper.
1362 * Functions from the extended socket API added by Ulrich Drepper.
1364 * Functions feenableexcept and fedisableexcept to control the
1365 behaviour of individual exceptions have been added by Andreas Jaeger.
1367 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1369 * The resolver code has been updated from bind 8.2.3-T5B which supports
1370 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1371 and Mark Kettenis.
1373 This change could in some situations effect backward compatibility. Since
1374 now `_res' is a thread-local instead of a global variable, modifying it
1375 in one thread does not have any effect in other threads.
1377 The resolver library was also extended to allow IPv6 as the transport
1378 protocol for the requests. This work was done by Stig Venaas.
1380 * Compatibility code for K&R C compilers has been removed from the
1381 header files. A ISO C compiler is needed to use the library
1382 (conforming to either C89 or C99 standard).
1384 * Complete rewrite of the localedef program to support multibyte character
1385 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1386 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1387 Implemented by Ulrich Drepper.
1389 Bruno Haible significantly improved the generation and use of the data
1390 structures for the wide character tables.
1392 * Plural handling in gettext implemented by Ulrich Drepper.
1394 * The utmp daemon has been removed.
1396 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1398 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1399 and Yutaka Niibe.
1401 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1403 * POSIX barriers implemented by Kaz Kylheku.
1405 * POSIX spawn function family implemented by Ulrich Drepper.
1407 * POSIX spinlocks are now available.
1409 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1411 * the configure option --enable-kernel=X.Y.Z allows to strip out
1412 compatibility for kernel versions before X.Y.Z. This is currently only
1413 implemented for Linux.
1415 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1416 field sin6_scope_id. This means that all programs using IPv6 should be
1417 recompiled. Don't expect binary compatibility with previous glibc
1418 versions.
1420 * various conversion modules for IBM character sets contributed by
1421 Masahide Washizawa.
1423 * IA-64 port by Jes Sorensen and HJ Lu.
1424 \f
1425 Version 2.1.3
1427 * bug fixes
1429 \f
1430 Version 2.1.2
1432 * bug fixes
1434 \f
1435 Version 2.1.1
1437 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1439 * New xdr functions are added; some rpc functions are now 64bit clean.
1441 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1443 * Fixed known incompatibilities with glibc 2.0.
1445 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1447 * Optimized a number of functions (especially the ELF dynamic loader).
1449 * Update timezone data files.
1451 * lots of charmaps corrections
1453 * some new locale definitions and charmaps
1455 \f
1456 Version 2.1
1458 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1459 conform to POSIX member type requirements. Symbol versions have been
1460 adjusted as needed within the library, and for direct use by applications,
1461 but there is potential for problems if third-party libraries use
1462 struct timeval as part of their interface. This does not present
1463 a problem for X and other "essential" system libraries.
1465 * An additional locale model to support C++ Standard Library locale
1466 model and probably more was implemented by Ulrich Drepper.
1468 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1469 symbol level.
1471 * Miles Bader provided the `argp' function family to support hierachical
1472 command line argument parsing, layered on top of getopt.
1474 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1476 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1477 numbers.
1479 * scanf recognizes the %a and %A format for scanning floating point numbers.
1481 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1482 information and interfaces for the available integer types.
1484 * about 130 new math functions were added to implement the ISO C9x math
1485 library.
1487 * the new header <complex.h> contains definitions of the complex math
1488 functions from ISO C 9X.
1490 * the new header <tgmath.h> defines generic macros to use complex or
1491 real valued functions.
1493 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1495 * Andreas Jaeger provided a test suite for the math library.
1497 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1499 * Ulrich Drepper added character set conversion functions (iconv).
1501 * Optimized string functions have been added.
1503 * The localedata addon is now part of glibc.
1505 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1507 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1508 daemon for NSS (nscd).
1510 Missing a better place here are some numbers on improvements. Under
1511 Linux 2.1.125 un-tar-ing the kernel sources takes
1513 user system wall
1515 using local files 12.19s 6.88s 22.91s
1517 using NIS 13.92s 8.91s 26.34s
1519 using NIS & nscd 10.37s 7.34s 25.30s
1521 using NIS+ 27.57s 30.37s 640.46s
1523 using NIS+ & nscd 10.25s 7.83s 26.51s
1525 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1527 Keep in mind that non-namelookup related operations dominate above times.
1528 It was just a common complain that using NIS+ unpacking the kernel is
1529 horribly slow.
1531 [1] The old nscd implementation is not available anymore since it was
1532 distributed with glibc up to version 2.0.98 and thus is now replaced.
1534 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1536 * Mark Kettenis provided a Hesiod NSS module.
1538 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1539 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1541 * rcmd can now handle netgroups (Dick Streefland).
1543 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1544 Bambrough.
1546 * Support for the IPv6 protocol has been added to the socket API, as per the
1547 latest draft standards.
1549 * Support for Linux 2.2 has been added.
1551 * Interface changes relative to the latest 2.0.x release:
1552 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1553 addseverity NEW: Unix98
1554 alphasort64 NEW: LFS
1555 argp_err_exit_status NEW: argp, GNU ext
1556 argp_error NEW: argp, GNU ext
1557 argp_failure NEW: argp, GNU ext
1558 argp_help NEW: argp, GNU ext
1559 argp_parse NEW: argp, GNU ext
1560 argp_program_bug_address NEW: argp, GNU ext
1561 argp_program_version NEW: argp, GNU ext
1562 argp_program_version_hook NEW: argp, GNU ext
1563 argp_state_help NEW: argp, GNU ext
1564 argp_usage NEW: argp, GNU ext
1565 authdes_create NEW: Secure RPC
1566 authdes_getucred NEW: Secure RPC
1567 authdes_pk_create NEW: Secure RPC
1568 backtrace NEW: GNU ext.
1569 backtrace_symbols NEW: GNU ext.
1570 backtrace_symbols_fd NEW: GNU ext.
1571 cacos NEW: ISO C 9x
1572 cacosf NEW: ISO C 9x
1573 cacosh NEW: ISO C 9x
1574 cacoshf NEW: ISO C 9x
1575 cacoshl NEW: ISO C 9x
1576 cacosl NEW: ISO C 9x
1577 capget NEW: kernel
1578 capset NEW: kernel
1579 carg NEW: ISO C 9x
1580 cargf NEW: ISO C 9x
1581 cargl NEW: ISO C 9x
1582 casin NEW: ISO C 9x
1583 casinf NEW: ISO C 9x
1584 casinh NEW: ISO C 9x
1585 casinhf NEW: ISO C 9x
1586 casinhl NEW: ISO C 9x
1587 casinl NEW: ISO C 9x
1588 catan NEW: ISO C 9x
1589 catanf NEW: ISO C 9x
1590 catanh NEW: ISO C 9x
1591 catanhf NEW: ISO C 9x
1592 catanhl NEW: ISO C 9x
1593 catanl NEW: ISO C 9x
1594 cbc_crypt NEW: Secure RPC
1595 ccos NEW: ISO C 9x
1596 ccosf NEW: ISO C 9x
1597 ccosh NEW: ISO C 9x
1598 ccoshf NEW: ISO C 9x
1599 ccoshl NEW: ISO C 9x
1600 ccosl NEW: ISO C 9x
1601 cexp NEW: ISO C 9x
1602 cexpf NEW: ISO C 9x
1603 cexpl NEW: ISO C 9x
1604 cimag NEW: ISO C 9x
1605 cimagf NEW: ISO C 9x
1606 cimagl NEW: ISO C 9x
1607 clearerr_locked REMOVED
1608 clntunix_create NEW: sunrpc ext
1609 clog NEW: ISO C 9x
1610 clog10 NEW: ISO C 9x
1611 clog10f NEW: ISO C 9x
1612 clog10l NEW: ISO C 9x
1613 clogf NEW: ISO C 9x
1614 clogl NEW: ISO C 9x
1615 conj NEW: ISO C 9x
1616 conjf NEW: ISO C 9x
1617 conjl NEW: ISO C 9x
1618 cpow NEW: ISO C 9x
1619 cpowf NEW: ISO C 9x
1620 cpowl NEW: ISO C 9x
1621 cproj NEW: ISO C 9x
1622 cprojf NEW: ISO C 9x
1623 cprojl NEW: ISO C 9x
1624 creal NEW: ISO C 9x
1625 crealf NEW: ISO C 9x
1626 creall NEW: ISO C 9x
1627 creat64 NEW: LFS
1628 csin NEW: ISO C 9x
1629 csinf NEW: ISO C 9x
1630 csinh NEW: ISO C 9x
1631 csinhf NEW: ISO C 9x
1632 csinhl NEW: ISO C 9x
1633 csinl NEW: ISO C 9x
1634 csqrt NEW: ISO C 9x
1635 csqrtf NEW: ISO C 9x
1636 csqrtl NEW: ISO C 9x
1637 ctan NEW: ISO C 9x
1638 ctanf NEW: ISO C 9x
1639 ctanh NEW: ISO C 9x
1640 ctanhf NEW: ISO C 9x
1641 ctanhl NEW: ISO C 9x
1642 ctanl NEW: ISO C 9x
1643 des_setparity NEW: Secure RPC
1644 ecb_crypt NEW: Secure RPC
1645 endutxent NEW: Unix98
1646 exp10 NEW: ISO C 9x
1647 exp10f NEW: ISO C 9x
1648 exp10l NEW: ISO C 9x
1649 exp2 NEW: ISO C 9x
1650 exp2f NEW: ISO C 9x
1651 exp2l NEW: ISO C 9x
1652 fattach NEW: STREAMS
1653 fdetach NEW: STREAMS
1654 fdim NEW: ISO C 9x
1655 fdimf NEW: ISO C 9x
1656 fdiml NEW: ISO C 9x
1657 feclearexcept NEW: ISO C 9x
1658 fegetenv NEW: ISO C 9x
1659 fegetexceptflag NEW: ISO C 9x
1660 fegetround NEW: ISO C 9x
1661 feholdexcept NEW: ISO C 9x
1662 feof_locked REMOVED
1663 feraiseexcept NEW: ISO C 9x
1664 ferror_locked REMOVED
1665 fesetenv NEW: ISO C 9x
1666 fesetexceptflag NEW: ISO C 9x
1667 fesetround NEW: ISO C 9x
1668 fetestexcept NEW: ISO C 9x
1669 feupdateenv NEW: ISO C 9x
1670 fflush_locked REMOVED
1671 ffsl NEW: GNU ext.
1672 ffsll NEW: GNU ext.
1673 fgetpos64 NEW: LFS
1674 fgets_unlocked NEW: GNU ext.
1675 fileno_locked REMOVED
1676 fma NEW: ISO C 9x
1677 fmaf NEW: ISO C 9x
1678 fmal NEW: ISO C 9x
1679 fmax NEW: ISO C 9x
1680 fmaxf NEW: ISO C 9x
1681 fmaxl NEW: ISO C 9x
1682 fmin NEW: ISO C 9x
1683 fminf NEW: ISO C 9x
1684 fminl NEW: ISO C 9x
1685 fmtmsg NEW: Unix98
1686 fopen64 NEW: LFS
1687 fputc_locked REMOVED
1688 fputs_unlocked NEW: GNU ext.
1689 fread_unlocked NEW: GNU ext.
1690 freopen64 NEW: LFS
1691 fseeko NEW: Unix98
1692 fsetpos64 NEW: LFS
1693 fstatfs64 NEW: LFS
1694 fstatvfs NEW: Unix98
1695 fstatvfs64 NEW: LFS
1696 ftello NEW: Unix98
1697 ftello64 NEW: LFS
1698 ftruncate64 NEW: LFS
1699 ftw64 NEW: LFS
1700 fwrite_unlocked NEW: GNU ext.
1701 gai_strerror NEW: IPv6
1702 gamma_r REMOVED
1703 gammaf_r REMOVED
1704 gammal_r REMOVED
1705 getchar_locked REMOVED
1706 getdate NEW: Unix98
1707 getdate_err NEW: Unix98
1708 getdate_r NEW: GNU ext.
1709 getmsg NEW: STREAMS
1710 getnameinfo NEW: IPv6
1711 getnetname NEW: Secure RPC
1712 getpmsg NEW: STREAMS
1713 getpt NEW: Unix98 PTY
1714 getrlimit64 NEW: LFS
1715 getutxent NEW: Unix98
1716 getutxid NEW: Unix98
1717 getutxline NEW: Unix98
1718 glob64 NEW: GNU ext.
1719 globfree64 NEW: GNU ext.
1720 gnu_get_libc_release NEW: GNU ext.
1721 gnu_get_libc_version NEW: GNU ext.
1722 grantpt NEW: Unix98 PTY
1723 host2netname NEW: Secure RPC
1724 iconv NEW: iconv
1725 iconv_close NEW: iconv
1726 iconv_open NEW: iconv
1727 if_freenameindex NEW: IPv6
1728 if_indextoname NEW: IPv6
1729 if_nameindex NEW: IPv6
1730 if_nametoindex NEW: IPv6
1731 in6addr_any NEW: IPv6
1732 in6addr_loopback NEW: IPv6
1733 inet6_isipv4mapped NEW: IPv6
1734 isastream NEW: STREAMS
1735 iswblank NEW: GNU ext.
1736 key_decryptsession NEW: Secure RPC
1737 key_decryptsession_pk NEW: Secure RPC
1738 key_encryptsession NEW: Secure RPC
1739 key_encryptsession_pk NEW: Secure RPC
1740 key_gendes NEW: Secure RPC
1741 key_get_conv NEW: Secure RPC
1742 key_secretkey_is_set NEW: Secure RPC
1743 key_setnet NEW: Secure RPC
1744 key_setsecret NEW: Secure RPC
1745 llrint NEW: ISO C 9x
1746 llrintf NEW: ISO C 9x
1747 llrintl NEW: ISO C 9x
1748 llround NEW: ISO C 9x
1749 llroundf NEW: ISO C 9x
1750 llroundl NEW: ISO C 9x
1751 log2 NEW: ISO C 9x
1752 log2f NEW: ISO C 9x
1753 log2l NEW: ISO C 9x
1754 lrint NEW: ISO C 9x
1755 lrintf NEW: ISO C 9x
1756 lrintl NEW: ISO C 9x
1757 lround NEW: ISO C 9x
1758 lroundf NEW: ISO C 9x
1759 lroundl NEW: ISO C 9x
1760 lseek64 NEW: LFS
1761 makecontext NEW: Unix98
1762 mempcpy NEW: GNU ext.
1763 mmap64 NEW: LFS
1764 moncontrol REMOVED
1765 modify_ldt NEW: kernel
1766 nan NEW: ISO C 9x
1767 nanf NEW: ISO C 9x
1768 nanl NEW: ISO C 9x
1769 nearbyint NEW: ISO C 9x
1770 nearbyintf NEW: ISO C 9x
1771 nearbyintl NEW: ISO C 9x
1772 netname2host NEW: Secure RPC
1773 netname2user NEW: Secure RPC
1774 nexttoward NEW: ISO C 9x
1775 nexttowardf NEW: ISO C 9x
1776 nexttowardl NEW: ISO C 9x
1777 nftw NEW: Unix98
1778 nftw64 NEW: LFS
1779 open64 NEW: LFS
1780 passwd2des NEW: Secure RPC
1781 pow10 NEW: GNU ext.
1782 pow10f NEW: GNU ext.
1783 pow10l NEW: GNU ext.
1784 pread NEW: Unix98
1785 pread64 NEW: LFS
1786 printf_size NEW: GNU ext.
1787 printf_size_info NEW: GNU ext.
1788 profil_counter REMOVED
1789 pthread_mutexattr_getkind_np REPLACED
1790 pthread_mutexattr_setkind_np REPLACED
1791 ptsname NEW: Unix98 PTY
1792 ptsname_r NEW: Unix98 PTY
1793 putc_locked REMOVED
1794 putchar_locked REMOVED
1795 putgrent NEW: GNU ext.
1796 putmsg NEW: STREAMS
1797 putpmsg NEW: STREAMS
1798 pututxline NEW: Unix98
1799 pwrite NEW: Unix98
1800 pwrite64 NEW: LFS
1801 readdir64 NEW: LFS
1802 readdir64_r NEW: LFS
1803 remquo NEW: ISO C 9x
1804 remquof NEW: ISO C 9x
1805 remquol NEW: ISO C 9x
1806 round NEW: ISO C 9x
1807 roundf NEW: ISO C 9x
1808 roundl NEW: ISO C 9x
1809 rtime NEW: GNU ext.
1810 scalbln NEW: ISO C 9x
1811 scalblnf NEW: ISO C 9x
1812 scalblnl NEW: ISO C 9x
1813 scandir64 NEW: LFS
1814 sendfile NEW: kernel
1815 setcontext NEW: Unix98
1816 setrlimit64 NEW: LFS
1817 setutxent NEW: Unix98
1818 sighold NEW: Unix98
1819 sigignore NEW: Unix98
1820 sigqueue NEW: POSIX.1b
1821 sigrelse NEW: Unix98
1822 sigset NEW: POSIX.1b
1823 sigtimedwait NEW: POSIX.1b
1824 sigwaitinfo NEW: POSIX.1b
1825 sincos NEW: GNU ext.
1826 sincosf NEW: GNU ext.
1827 sincosl NEW: GNU ext.
1828 statfs64 NEW: LFS
1829 statvfs NEW: Unix98
1830 statvfs64 NEW: LFS
1831 strcasestr NEW: GNU ext.
1832 strtoimax NEW: ISO C 9x
1833 strtoumax NEW: ISO C 9x
1834 strverscmp NEW: GNU ext.
1835 svcauthdes_stats NEW: Secure RPC
1836 svcunix_create NEW: sunrpc etx
1837 svcunixfd_create NEW: sunrpc ext
1838 swapcontext NEW: Unix98
1839 tcgetsid NEW: Unix98 PTY
1840 tdestroy NEW: GNU ext.
1841 tgamma NEW: ISO C 9x
1842 tgammaf NEW: ISO C 9x
1843 tgammal NEW: ISO C 9x
1844 tmpfile64 NEW: LFS
1845 trunc NEW: ISO C 9x
1846 truncate64 NEW: LFS
1847 truncf NEW: ISO C 9x
1848 truncl NEW: ISO C 9x
1849 umount2 NEW: kernel
1850 unlockpt NEW: Unix98 PTY
1851 updwtmpx NEW: Unix98
1852 user2netname NEW: Secure RPC
1853 utmpxname NEW: Unix98
1854 versionsort NEW: GNU ext.
1855 versionsort64 NEW: GNU ext.
1856 waitid NEW: Unix98
1857 wcscasecmp NEW: GNU ext.
1858 wcsncasecmp NEW: GNU ext.
1859 wcsnlen NEW: GNU ext.
1860 wcstoimax NEW: ISO C 9x
1861 wcstoll NEW: ISO C 9x
1862 wcstoull NEW: ISO C 9x
1863 wcstoumax NEW: ISO C 9x
1864 wcswcs NEW: Unix98
1865 wordexp NEW: POSIX.2
1866 wordfree NEW: POSIX.2
1867 write_profiling REMOVED
1868 xdecrypt NEW: Secure RPC
1869 xdr_authdes_cred NEW: Secure RPC
1870 xdr_authdes_verf NEW: Secure RPC
1871 xdr_cryptkeyarg NEW: Secure RPC
1872 xdr_cryptkeyarg2 NEW: Secure RPC
1873 xdr_cryptkeyres NEW: Secure RPC
1874 xdr_getcredres NEW: Secure RPC
1875 xdr_key_netstarg NEW: Secure RPC
1876 xdr_key_netstres NEW: Secure RPC
1877 xdr_keybuf NEW: Secure RPC
1878 xdr_keystatus NEW: Secure RPC
1879 xdr_netnamestr NEW: Secure RPC
1880 xdr_sizeof NEW: Secure RPC
1881 xdr_unixcred NEW: sunrpc ext
1882 xencrypt NEW: Secure RPC
1883 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1884 \f
1885 Version 2.0.6
1887 * more bug fixes
1889 \f
1890 Version 2.0.5
1892 * more bug fixes
1894 * inet_ntoa is thread-safe
1896 * updwtmp is moved from libutil to libc
1898 * rewrite of cbrt function
1900 * update of timezone data
1901 \f
1902 Version 2.0.4
1904 * more bug fixes
1905 \f
1906 Version 2.0.3
1908 * more bug fixes
1909 \f
1910 Version 2.0.2
1912 * more bug fixes
1914 * add atoll function
1916 * fix complex problems in Berkeley DB code
1918 * fix math functions
1919 \f
1920 Version 2.0.1
1922 * fixed lots of header problems (especially Linux/GNU specific)
1924 * dynamic loader preserves all registers
1926 * Roland McGrath provided support for handling of auxiliary objects in
1927 the ELF dynamic loader.
1929 * support for parallel builds is improved
1930 \f
1931 Version 2.0
1933 * GNU extensions are no longer declared by default. To enable them you
1934 must define the macro `_GNU_SOURCE' in your program or compile with
1935 `-D_GNU_SOURCE'.
1937 * The library has changed from using GNU ld symbol aliases to using weak
1938 symbols where available. The ELF object file format supports weak
1939 symbols; GNU ld also supports weak symbols in the a.out format. (There
1940 is also now support for other GNU ld extensions in ELF. Use the
1941 `--with-elf' option to configure to indicate you have ELF, and
1942 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1943 of many files which contained only symbol aliases, reducing the size of
1944 the source and the compiled library; many other files were renamed to
1945 less cryptic names previously occupied by the symbol alias files.
1946 There is a new header file <elf.h> for programs which operate on
1947 files in the ELF format.
1949 * Converted to Autoconf version 2, so `configure' has more options.
1950 Run `configure --help' to see the details.
1952 * The library can now be configured to build profiling, highly-optimized
1953 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1954 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1955 `configure' enable building these extra libraries. The shared library is
1956 built by default when using both ELF and GNU ld. When shared libraries
1957 are enabled, the new library `-ldl' is available for arbitrary run-time
1958 loading of shared objects; its interface is defined in <dlfcn.h>. The
1959 new header file <link.h> gives access to the internals of the run-time
1960 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1961 application of same name on other systems and it provides information
1962 about dynamically linked binaries.
1964 * The C library now provides the run-time support code for profiling
1965 executables compiled with `-pg'. Programs can control the profiling code
1966 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1967 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1968 the support for this file format was contributed by David Mosberger-Tang.
1970 * The math code has been replaced with a math library based on fdlibm from
1971 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1972 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1973 functions. The math functions now reside in a separate library, so
1974 programs using them will need to use `-lm' their linking commands.
1976 * John C. Bowman contributed optimized ix87 assembler inline functions.
1978 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1979 mechanism similar to that found in Solaris 2. This is now used for the
1980 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1981 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1982 file controls what services are used for each individual database. This
1983 works by loading shared libraries with names specified in `nsswitch.conf',
1984 so service modules can be changed or added at any time without even
1985 relinking any program. Currently there are the file, db, and NIS based
1986 NSS services available.
1988 * The new functions `strtoq' and `strtouq' parse integer values from
1989 strings, like `strtol' and `strtoul', but they return `long long int' and
1990 `unsigned long long int' values, respectively (64-bit quantities).
1992 * The new functions `strtof' and `strtold' parse floating-point values from
1993 strings, like `strtod', but they return `float' and `long double' values,
1994 respectively (on some machines `double' and `long double' are the same).
1996 * Ulrich Drepper has contributed new implementations of the floating-point
1997 printing and reading code used in the `printf' family of functions and
1998 `strtod', `strtof', and `strtold'. These new functions are perfectly
1999 accurate, and much faster than the old ones.
2001 * The implementation of the POSIX locale model was completely rewritten by
2002 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2003 to compile the POSIX locale definition.
2005 * The former dummy implementations of the strcoll and strxfrm function are
2006 now replaced by fully functional code contributed by Ulrich Drepper. The
2007 collation information comes from the POSIX locale definitions.
2009 * The new header <langinfo.h> defines an interface for accessing
2010 various locale-dependent data (using the locale chosen with `setlocale').
2012 * Ulrich Drepper has contributed a new suite of functions for operation on
2013 wide-character and multibyte-character strings, in <wchar.h>;
2014 and classification and case conversion of wide characters, in <wctype.h>.
2015 These new functions are conforming to the ISO C, Amendement 1 specification.
2017 * There is now a second implementation of the standard I/O library available.
2018 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2019 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2021 * You can now use positional parameter specifications in format strings
2022 for the `printf' and `scanf' families of functions. For example,
2023 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2024 ``Number 6, Mr Jones''. This is mainly useful when providing different
2025 format strings for different languages, whose grammars may dictate
2026 different orderings of the values being printed. To support this
2027 feature, the interface for `register_printf_handler' has changed; see
2028 the header file <printf.h> for details.
2030 * The `printf' and `scanf' families of functions now understand a new
2031 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2032 to group numbers as indicated by the locale; for `scanf' and friends, this
2033 says to accept as valid only a number with all the proper grouping
2034 separators in the right places. In the default "C" locale, numbers are
2035 not grouped; but locales for specific countries will define the usual
2036 conventions (i.e. separate thousands with `,' in the US locale).
2038 * The pgrp functions have been regularized, slightly incompatibly but much
2039 less confusingly. The core functions are now `getpgid' and `setpgid',
2040 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2041 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2042 provided for compatibility. There is no longer an incompatible `getpgrp'
2043 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2045 * The new header file <fts.h> and suite of functions simplify programs that
2046 operate on directory trees. This code comes from 4.4 BSD.
2048 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2049 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2050 NSS scheme used in glibc.
2052 * There is a new malloc debugging hook `__memalign_hook'.
2054 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2055 `unsigned int' in <sys/types.h>. These are for compatibility only and
2056 their use is discouraged.
2058 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2059 done differently, so that it works even without GNU ld.
2061 * New function `euidaccess' checks allowed access to a file like `access',
2062 but using the effective IDs instead of the real IDs.
2064 * The time zone data files have been updated for the latest and greatest
2065 local time conventions of the countries of the world.
2067 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2068 see <dirent.h>.
2070 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2071 for formatting floating-point numbers. They are provided only for
2072 compatibility; new programs should use `sprintf' instead. There are
2073 also equivalent function for the `long double' floating-point type and
2074 all functions also exist in a reentrant form.
2076 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2077 functions for maintaining the login-record files (primarily of use to
2078 system programs such as `login'), and convenient functions for
2079 allocating and initializing a pseudo-terminal (pty) device.
2081 * Ulrich Drepper has contributed new support for System V style
2082 shared memory and IPC on systems that support it.
2084 * Ulrich Drepper has contributed several miscellaneous new functions found
2085 in System V: The `hsearch' family of functions provide an effective
2086 implementation of hash tables; `a64l' and `l64a' provide a very simple
2087 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2088 number generator.
2090 * Ulrich Drepper has contributed new reentrant counterparts for the
2091 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2093 * Ulrich Drepper has contributed new, highly-optimized versions of several
2094 string functions for the i486/Pentium family of processors.
2096 * Ulrich Drepper has updated the Linux-specific code, based largely
2097 on work done in Hongjiu Lu's version of GNU libc for Linux.
2098 The GNU library now supports Linux versions 2.0.10 and later,
2099 using the ELF object file format (i[3456]86-*-linux).
2101 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2103 * David Mosberger-Tang and Richard Henderson have ported the C library
2104 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2105 dynamic linking support for ELF/Alpha.
2107 * Richard Henderson contributed several Alpha optimized assembler function
2108 for arithmetic and string handling.
2110 * Ulrich Drepper has contributed a new set of message catalog functions to
2111 support multiple languages using the <libintl.h> interface, for use with
2112 his new package GNU gettext. Translation volunteers have contributed
2113 catalogs of the library's messages in Spanish, German, and Korean.
2115 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2116 program and the `catgets' function for reading the catalog files it
2117 creates. (The <libintl.h> interface is preferred; we include the
2118 <nl_types.h> interface using `catgets' only for source compatibility with
2119 programs already written to use it.)
2121 * New header file <values.h> gives SVID-compatible names for <limits.h>
2122 constants.
2124 * Various new macros, declarations, and small header files for compatibility
2125 with 4.4 BSD.
2127 * New function `group_member' is a convenient way to check if a process has
2128 a given effective group ID.
2130 * When using GCC 2.7 and later, the socket functions are now declared in a
2131 special way so that passing an argument of type `struct sockaddr_in *',
2132 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2133 `struct sockaddr *' type, does not generate a type-clash warning.
2135 * New function `error' declared in header file <error.h> is a convenient
2136 function for printing error messages and optionally exiting; this is the
2137 canonical function used in GNU programs. The new functions `err', `warn',
2138 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2139 doing the same thing.
2141 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2142 POSIX.2 `glob' function to do ~ and {...} expansion.
2144 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2145 `clearenv' which is used in POSIX.9 is also available.
2147 * New function `getsid' returns session ID number on systems that support it.
2149 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2150 files <db.h> and <mpool.h> provide a rich set of functions for several
2151 types of simple databases stored in memory and in files, and <ndbm.h> is
2152 an old `ndbm'-compatible interface using the `db' functions. Link with
2153 `-ldb' to get these functions.
2155 * New macro `strdupa' copies a string like `strdup', but uses local stack
2156 space from `alloca' instead of dynamic heap space from `malloc'.
2158 * New function `strnlen' is like `strlen' but searches only a given maximum
2159 number of characters for the null terminator. `stpncpy', `strndup' and
2160 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2161 function.
2163 * New function `statfs' in header <sys/statfs.h>.
2165 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2166 provide convenient functions for operating on blocks of null-terminated
2167 strings.
2169 * A new suite of functions in <utmp.h> handle all the details of reading
2170 and writing the utmp file.
2172 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2173 Thorsten Kukuk.
2175 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2176 completely POSIX compliant and also implemented the extended functionality
2177 to handle alternate digit representation and alternate era date formats.
2179 * Ulrich Drepper provided an implementation of the `strptime' function
2180 defined in XPG4.2 which transforms a string into a `struct tm' value.
2182 * Paul Eggert provided the tzselect shell script as part of the timezone
2183 code. The shell script makes it easy to select the correct timezone
2184 specification.
2186 * The implementation of the malloc family of functions is completely replaced
2187 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2188 The implementation uses the mmap function (if available) and it is
2189 optimized for the use in multi threaded programs.
2191 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2192 functions. This new functionality is usable by specifying a special
2193 salt string and it is compatible with implementation on *BSD systems.
2195 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2196 `getsubopt' to handle second level command line options, `bsd_signal'
2197 to access BSD style `signal' functionality, the obsolete `regexp' style
2198 expression matcher.
2200 * the `lchown' function is available on system which support this
2201 functionality.
2203 * The implementation of the shadow password handling function was contributed
2204 by Ulrich Drepper.
2206 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2208 * POSIX.1g support was added. The <sys/select.h> header is available,
2209 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2210 implementation of `getaddrinfo'.
2211 \f
2212 Version 1.09
2214 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2216 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2217 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2219 * The new function `daemon' from 4.4 BSD is useful for server programs that
2220 want to put themselves in the background.
2222 * Joel Sherrill has contributed support for several standalone boards that
2223 run without an operating system.
2225 * `printf', `scanf' and friends now accept a `q' type modifier for long
2226 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2228 * All of the code taken from BSD (notably most of the math and networking
2229 routines) has been updated from the BSD 4.4-Lite release.
2231 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2233 * The new functions `getdomainname' and `setdomainname' fetch or change the
2234 YP/NIS domain name. These are system calls which exist on systems which
2235 have YP (aka NIS).
2237 * The time zone data files have been updated for the latest international
2238 conventions.
2240 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2241 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2242 \f
2243 Version 1.08
2245 * The C library now includes support for Sun RPC, from Sun's free
2246 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2247 are included. (There is still no support for YP.)
2249 * Tom Quinn has contributed a port of the C library to SGI machines running
2250 Irix 4 (mips-sgi-irix4).
2252 * The new `lockf' function is a simplified interface to the locking
2253 facilities of `fcntl', included for compatibility.
2255 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2257 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2259 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2260 compatibility.
2262 * The error message printed by `assert' for a failed assertion now includes
2263 the name of the program (if using GNU ld) and the name of the calling
2264 function (with versions of GCC that support this).
2266 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2268 * The library now includes the <sys/mman.h> header file and memory
2269 management functions `mmap', `munmap', `mprotect', `msync', and
2270 `madvise', on systems that support those facilities.
2272 * The interface for `mcheck' has changed slightly: the function called to
2273 abort the program when an allocation inconsistency is detected now takes
2274 an argument that indicates the type of failure. The new function
2275 `mprobe' lets you request a consistency check for a particular block at
2276 any time (checks are normally done only when you call `free' or `realloc'
2277 on a block).
2279 * It is now possible to easily cross-compile the C library, building on one
2280 system a library to run on another machine and/or operating system. All
2281 you need to do is set the variable `HOST_CC' in `configparms' to the
2282 native compiler for programs to run on the machine you are building on (a
2283 few generator programs are used on Unix systems); set `CC' to the
2284 cross-compiler.
2286 * The new function `fexecve' (only implemented on the GNU system) executes
2287 a program file given a file descriptor already open on the file.
2288 \f
2289 Version 1.07
2291 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2292 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2294 * You can set the variable `libprefix' in `configparms' to specify a prefix
2295 to be prepended to installed library files; this makes it easy to install
2296 the GNU C library to be linked as `-lgnuc' or whatever.
2298 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2299 copies a limited number of characters from a string, and returns the
2300 address of the last character written.
2302 * You no longer need to check for whether the installed `stddef.h' is
2303 compatible with the GNU C library. configure now checks for you.
2305 * You can now define a per-stream `fileno' function to convert the
2306 stream's cookie into an integral file descriptor.
2308 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2309 allocates zero bytes of storage, and returns a unique pointer which
2310 you can pass to `realloc' or `free'. The behavior is undefined if
2311 you dereference this pointer.
2313 * The C library now runs on Sony NEWS m68k machines running either
2314 NewsOS 3 or NewsOS 4.
2316 * The new `syscall' function is a system-dependent primitive function
2317 for invoking system calls. It has the canonical behavior on Unix
2318 systems, including unreliable return values for some calls (such as
2319 `pipe', `fork' and `getppid').
2321 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2322 to `EAGAIN', which is the preferred name. On systems whose kernels
2323 use two distinct codes, the C library now translates EWOULDBLOCK to
2324 EAGAIN in every system call function.
2325 \f
2326 Version 1.06
2328 * The GNU C Library Reference Manual is now distributed with the library.
2329 `make dvi' will produce a DVI file of the printed manual.
2330 `make info' will produce Info files that you can read on line using C-h i
2331 in Emacs or the `info' program.
2332 Please send comments on the manual to bug-glibc-manual@gnu.org.
2334 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2336 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2338 * Jason Merrill has contributed a port to the Sequent Symmetry running
2339 Dynix version 3 (i386-sequent-dynix).
2341 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2342 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2344 * New function `memory_warnings' lets you arrange to get warnings when
2345 malloc is running out of memory to allocate, like Emacs gives you.
2347 * The C library now contains the relocating allocator used in Emacs 19 for
2348 its editing buffers. This allocator (ralloc) minimizes allocation
2349 overhead and fragmentation by moving allocated regions around whenever it
2350 needs to. You always refer to a ralloc'd region with a "handle" (a
2351 pointer to a pointer--an object of type `void **').
2353 * There is a new `printf' format: `%m' gives you the string corresponding
2354 to the error code in `errno'.
2356 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2357 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2358 pass, the `a' modifier says to fill in a `char **' you pass with a
2359 malloc'd string.
2361 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2362 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2363 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2365 * `mkstemp' is a traditional Unix function to atomically create and open a
2366 uniquely-named temporary file.
2367 \f
2368 Version 1.05
2370 * The standard location for the file that says what the local timezone is
2371 has changed again. It is now `/usr/local/etc/localtime' (or more
2372 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2374 * The distribution no longer contains any files with names longer than 14
2375 characters.
2377 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2378 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2380 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2381 \f
2382 Version 1.04
2384 * The configuration process has changed quite a bit. The `configure'
2385 script is now used just like the configuration scripts for other GNU
2386 packages. The `sysdeps' directory hierarchy is much rearranged.
2387 The file `INSTALL' explains the new scheme in detail.
2389 * The header files no longer need to be processed into ANSI C and
2390 traditional C versions. There is just one set of files to install, and
2391 it will work with ANSI or old C compilers (including `gcc -traditional').
2393 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2394 MIPS DECStation running Ultrix 4.
2396 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2397 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2398 made itself into a shared library.
2400 * Yet further improved support for the i386, running 4.3 BSD-like systems
2401 (such as Mach 3 with the Unix single-server), or System V.
2403 * New function `strncasecmp' to do case-insensitive string comparison
2404 with limited length.
2406 * New function `strsep' is a reentrant alternative to `strtok'.
2408 * New functions `scandir' and `alphasort' for searching directories.
2410 * New function `setenv' is a better interface to `putenv'.
2412 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2413 function for traversing a directory tree.
2415 * The GNU obstack package is now also part of the C library.
2416 The new function `open_obstack_stream' creates a stdio stream that
2417 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2418 formatted output directly to an obstack.
2420 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2421 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2423 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2425 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2426 things to your strings.
2428 * There are some new test programs: test-fseek, testmb, and testrand.
2430 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2431 These ports are not finished, but are a good starting place for really
2432 supporting those systems.
2434 * `/etc/localtime' is now the standard location for the file that says what
2435 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2436 This follows the general principle that `/etc' is the place for all local
2437 configuration files.
2439 * The C library header files now use `extern "C"' when used by the C++
2440 compiler, so the C library should now work with C++ code.
2442 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2443 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2444 in <strings.h>.)
2446 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2447 function which uses the `merge sort' algorithm, and is said to be
2448 significantly faster than the old GNU `qsort' function. Merge sort is
2449 now the standard `qsort' function. The new algorithm can require a lot
2450 of temporary storage; so, the old sorting function is called when the
2451 required storage is not available.
2453 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2454 provides the Unix `crypt' function, plus some other entry points.
2456 * The code and header files taken from 4.4 BSD have been updated with the
2457 latest files released from Berkeley.
2458 \f
2459 ----------------------------------------------------------------------
2460 Copyright information:
2462 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2464 Permission is granted to anyone to make or distribute verbatim copies
2465 of this document as received, in any medium, provided that the
2466 copyright notice and this permission notice are preserved,
2467 thus giving the recipient permission to redistribute in turn.
2469 Permission is granted to distribute modified versions
2470 of this document, or of portions of it,
2471 under the above conditions, provided also that they
2472 carry prominent notices stating who last changed them.
2473 \f
2474 Local variables:
2475 version-control: never
2476 fill-column: 76
2477 End: