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1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
7 \f
8 Version 2.20
10 * The following bugs are resolved with this release:
12 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
13 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16198, 16284, 16287,
14 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516, 16532, 16539,
15 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609, 16610, 16611,
16 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642, 16648, 16649,
17 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695, 16701, 16706,
18 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740, 16743, 16754,
19 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796, 16799, 16800,
20 16815, 16823, 16824, 16831, 16838, 16849, 16854, 16876, 16877, 16878,
21 16882, 16885, 16888, 16890, 16912, 16915, 16916, 16917, 16918, 16922,
22 16927, 16928, 16932, 16943, 16958, 16965, 16966, 16967, 16977, 16978,
23 16984, 16990, 16996, 17009, 17022, 17031, 17042, 17048, 17050, 17058,
24 17061, 17062, 17069, 17075, 17079, 17084, 17086, 17092, 17097.
26 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
28 * The minimum Linux kernel version that this version of the GNU C Library
29 can be used with is 2.6.32.
31 * Running the testsuite no longer terminates as soon as a test fails.
32 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
33 with PASS or FAIL lines for individual tests. A summary of the results is
34 printed, including a list of failing lists, and "make check" exits with
35 error status if there were any unexpected failures. "make check
36 stop-on-test-failure=y" may be used to keep the old behavior.
38 * The am33 port, which had not worked for several years, has been removed
39 from ports.
41 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
42 supported; they now act the same as _DEFAULT_SOURCE (but generate a
43 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
44 conflicted with POSIX (support for which was removed in 2.19), the
45 interfaces those macros enabled remain available when compiling with
46 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
47 test macros defined.
49 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
51 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
52 This may improve lock scaling of existing programs on TX capable systems.
53 The lock elision code is only built with --enable-lock-elision=yes and
54 then requires a GCC version supporting the TX builtins. With lock elision
55 default mutexes are elided via __builtin_tbegin, if the cpu supports
56 transactions. By default lock elision is not enabled and the elision code
57 is not built.
59 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
60 copy the path argument. This allowed programs to cause posix_spawn to
61 deference a dangling pointer, or use an unexpected pathname argument if
62 the string was modified after the posix_spawn_file_actions_addopen
63 invocation.
65 * All supported architectures now use the main glibc sysdeps directory
66 instead of some being in a separate "ports" directory (which was
67 distributed separately before glibc 2.17).
69 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
70 On configurations that support it (all Linux configurations), it's now
71 used regardless of the --enable-add-ons switch to configure. It is no
72 longer possible to build such configurations without pthreads support.
73 \f
74 Version 2.19
76 * The following bugs are resolved with this release:
78 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
79 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
80 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
81 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
82 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
83 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
84 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
85 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
86 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
87 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
88 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
89 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
90 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
91 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
92 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
93 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
94 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
95 16431, 16453, 16474, 16506, 16510, 16529
97 * Slovenian translations for glibc messages have been contributed by the
98 Translation Project's Slovenian team of translators.
100 * The public headers no longer use __unused nor __block. This change is to
101 support compiling programs that are derived from BSD sources and use
102 __unused internally, and to support compiling with Clang's -fblock
103 extension which uses __block.
105 * CVE-2012-4412 The strcoll implementation caches indices and rules for
106 large collation sequences to optimize multiple passes. This cache
107 computation may overflow for large collation sequences and may cause a
108 stack or buffer overflow. This is now fixed to use a slower algorithm
109 which does not use a cache if there is an integer overflow.
111 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
112 rules for large collation sequences to optimize multiple passes and falls
113 back to alloca if malloc fails, resulting in a possible stack overflow.
114 The implementation now falls back to an uncached collation sequence lookup
115 if malloc fails.
117 * CVE-2013-4788 The pointer guard used for pointer mangling was not
118 initialized for static applications resulting in the security feature
119 being disabled. The pointer guard is now correctly initialized to a
120 random value for static applications. Existing static applications need
121 to be recompiled to take advantage of the fix (bug 15754).
123 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
124 to the d_name member of struct dirent, or omit the terminating NUL
125 character. (Bugzilla #14699).
127 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
128 aligned_alloc functions could allocate too few bytes or corrupt the
129 heap when passed very large allocation size values (Bugzilla #15855,
130 #15856, #15857).
132 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
133 for AF_INET6 has been fixed (Bugzilla #16072).
135 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
136 pap_CW, quz_PE, the_NP.
138 * Substantially revised locales: gd_GB, ht_HT
140 * The LC_ADDRESS field was updated to support country_car for almost all
141 supported locales.
143 * ISO 1427 definitions were updated.
145 * ISO 3166 definitions were updated.
147 * The localedef utility now supports --big-endian and --little-endian
148 command-line options to generate locales for a different system from that
149 for which the C library was built.
151 * Binary locale files now only depend on the endianness of the system for
152 which they are generated and not on other properties of that system. As a
153 consequence, binary files generated with new localedef may be incompatible
154 with old versions of the GNU C Library, and binary files generated with
155 old localedef may be incompatible with this version of the GNU C Library,
156 in the following circumstances:
158 + Locale files may be incompatible on m68k systems.
160 + Locale archive files (but not separate files for individual locales) may
161 be incompatible on systems where plain "char" is signed.
163 * The configure option --disable-versioning has been removed. Builds with
164 --disable-versioning had not worked for several years.
166 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
167 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
169 * SystemTap probes for malloc have been introduced.
171 * SystemTap probes for slow multiple precision fallback paths of
172 transcendental functions have been introduced.
174 * Support for powerpc64le has been added.
176 * The soft-float powerpc port now supports e500 processors.
178 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
180 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
181 set of header declarations that are enabled by default, even when other
182 feature test macros or compiler options such as -std=c99 would otherwise
183 disable some of those declarations.
185 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
186 conflict with POSIX. The libbsd-compat library (which was a dummy library
187 that did nothing) has also been removed.
189 * Preliminary documentation about Multi-Thread, Async-Signal and
190 Async-Cancel Safety has been added.
192 * Change of ABI data structures for s390 and s390x:
193 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
194 allow for future hardware extensions. All library functions that accept or
195 return these structures were versioned in order to provide backwards
196 compatibility with existing code. However, not all cases can be handled
197 with interface versioning. If an application embeds either structure into
198 another structure and that structure is passed to another compilation unit
199 which expects the newer larger-sized object then any access to the new
200 fields will result in undefined behaviour. Similarly any access to fields
201 that were moved by the enlarging of the structures will cause undefined
202 behaviour. To fix the undefined behaviour all objects that are part of the
203 final in-memory image must agree on the size of structures, and this may
204 require recompilation.
205 \f
206 Version 2.18
208 * The following bugs are resolved with this release:
210 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
211 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
212 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
213 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
214 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
215 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
216 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
217 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
218 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
219 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
220 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
221 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
222 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
223 15759.
225 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
226 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
227 Distributions can re-enable building and using pt_chown via the new configure
228 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
229 considerable security risks and should only be used if the distribution
230 understands and accepts the risks.
232 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
233 #15078).
235 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
236 fixed (Bugzilla #15330).
238 * Add support for calling C++11 thread_local object destructors on thread
239 and program exit. This needs compiler support for offloading C++11
240 destructor calls to glibc.
242 * Improved worst case performance of libm functions with double inputs and
243 output.
245 * Support for priority inherited mutexes in pthread condition variables on
246 non-x86 architectures.
248 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
250 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
252 * Optimized string functions for ARM. Implemented by Will Newton and
253 Richard Henderson.
255 * Optimized libm functions for SPARC. Implemented by David S. Miller.
257 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
258 Richard Henderson.
260 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
261 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
263 * Added a benchmark framework to track performance of functions in glibc.
265 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
266 It is based on draft TS 18661 and currently enabled as a GNU extension.
268 * On Linux, the clock function now uses the clock_gettime system call
269 for improved precision, rather than old times system call.
271 * Added support for version-3 tz format files. This is needed when using
272 the tz database release 2013e or later, and affects a few unusual cases --
273 currently only TZ='America/Godthab' for time stamps after 2037.
275 * Added new API functions pthread_getattr_default_np and
276 pthread_setattr_default_np to get and set the default pthread
277 attributes of a process.
279 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
280 This may improve lock scaling of existing programs on TSX capable systems.
281 When the --enable-lock-elision=yes parameter is specified at configure
282 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
283 mutexes.
285 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
286 availability). Implemented by Ryan S. Arnold.
288 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
289 \f
290 Version 2.17
292 * The following bugs are resolved with this release:
294 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
295 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
296 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
297 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
298 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
299 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
300 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
301 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
302 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
303 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
304 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
305 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
306 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
307 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
308 14879, 14889, 14893, 14898, 14914.
310 * Optimization of memcpy for MIPS.
312 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
313 EMFILE has been fixed (Bugzilla #14889).
315 * The add-on ports collection is now distributed in the "ports" subdirectory
316 of the main GNU C Library distribution, rather than separately.
318 * Port to ARM AArch64 contributed by Linaro.
320 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
321 Optimized versions of memcpy, memset, and memcmp added for System z10 and
322 zEnterprise z196.
323 Implemented by Andreas Krebbel.
325 * The new function secure_getenv allows secure access to the environment,
326 returning NULL if running in a SUID/SGID process. This function replaces
327 the internal function __secure_getenv.
329 * SystemTap static probes have been added into the dynamic linker.
330 Implemented by Gary Benson.
332 * Optimizations of string functions strstr, strcasestr and memmem.
333 Implemented by Maxim Kuvyrkov.
335 * The minimum Linux kernel version that this version of the GNU C Library
336 can be used with is 2.6.16.
338 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
339 powerpc POWER7. Implemented by Will Schmidt.
341 * New configure option --disable-nscd builds the C library such that it
342 never attempts to contact the Name Service Caching Daemon (nscd).
343 New configure option --disable-build-nscd avoids building nscd itself;
344 this is the default if --disable-nscd is used.
346 * Improved support for cross-compilation, including cross-testing and
347 bootstrap builds without a previously built glibc.
349 * Several testsuite tests are now able to test multiple IFUNC variants of an
350 interface, rather than just testing the one that would be chooen by
351 default.
353 * New configure options --with-bugurl and --with-pkgversion, for
354 distributors to use to embed their bug-reporting and package version
355 information in --help and --version output.
357 * The ttyname and ttyname_r functions on Linux now fall back to searching for
358 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
359 allows creation of chroots without the procfs mounted on /proc.
361 * The `crypt' function now fails if passed salt bytes that violate the
362 specification for those values. On Linux, the `crypt' function will
363 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
364 enabled, and fail on encrypted strings using the MD5 or DES algorithm
365 when the mode is enabled.
367 * The `clock_*' suite of functions (declared in <time.h>) is now available
368 directly in the main C library. Previously it was necessary to link with
369 -lrt to use these functions. This change has the effect that a
370 single-threaded program that uses a function such as `clock_gettime' (and
371 is not linked with -lrt) will no longer implicitly load the pthreads
372 library at runtime and so will not suffer the overheads associated with
373 multi-thread support in other code such as the C++ runtime library.
375 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
376 sat_IN, and szl_PL.
377 \f
378 Version 2.16
380 * The following bugs are resolved with this release:
382 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
383 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
384 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
385 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
386 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
387 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
388 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
389 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
390 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
391 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
392 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
393 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
394 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
395 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
396 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
397 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
398 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
399 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
400 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
401 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
402 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
403 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
404 14277, 14278.
406 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
407 configuring glibc with:
408 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
409 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
410 Implemented by H.J. Lu.
412 * ISO C11 support:
414 + define static_assert
416 + do not declare gets
418 + declare at_quick_exit and quick_exit also for ISO C11
420 + aligned_alloc. NB: The code is deliberately allows the size parameter
421 to not be a multiple of the alignment. This is a moronic requirement
422 in the standard but it is only a requirement on the caller, not the
423 implementation.
425 + timespec_get added
427 + uchar.h support added
429 + CMPLX, CMPLXF, CMPLXL added
431 Implemented by Ulrich Drepper.
433 * Support for the IA-64 has been moved to ports.
435 * Remove support for anything but ELF binary format
437 * Checking versions of poll, ppoll added.
438 Implemented by Ulrich Drepper.
440 * More generic and 64-bit performance optimizations to math functions.
441 Implemented by Ulrich Drepper.
443 * New configure option --enable-obsolete-rpc makes the deprecated RPC
444 headers and functions available at compile time as they were before
445 version 2.14. This option will be removed at some time in the future
446 after the TI-RPC library becomes fully sufficient for the needs of
447 existing applications.
449 * Compatibility code for Linux kernel versions before 2.4 has been removed.
450 Note that glibc is not expected to work with any Linux kernel version
451 before 2.6.
453 * New header <sys/auxv.h> and function getauxval allowing easy access to
454 the AT_* key-value pairs passed from the Linux kernel. The header also
455 defines the HWCAP_* bits associated with the AT_HWCAP key.
457 * New locales: mag_IN
459 * New configure option --enable-systemtap builds SystemTap static probes
460 into libc for setjmp and longjmp and into libpthread for various operations.
461 So far the setjmp/longjmp probes and some of the libpthread probes are
462 provided only for i*86 and x86_64.
463 Implemented by Roland McGrath and Rayson Ho.
465 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
467 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
468 and Will Schmidt.
470 * More optimized functions for SPARC. Implemented by David S. Miller.
472 * Improved support for cross-compilation, especially bootstrap builds
473 without a previously built glibc.
475 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
476 Chris Metcalf from Tilera.
478 * Support for the old ARM ABI has been removed from ports. Only the EABI is
479 now supported for ARM processors.
481 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
482 as the name of the dynamic linker, to distinguish it from the
483 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
485 * Support for CRIS has been removed from ports.
487 * A new class of installed header has been documented for low-level
488 platform-specific functionality. PowerPC added the first instance with a
489 function to provide time base register access. Contributed by Tulio
490 Magno Quites Machado Filho.
492 * ix86 configurations now install header files that are consistent with
493 what x86-64 configurations install. These same header files can be used
494 for -m32, -m64, or -mx32 builds.
495 Contributed by H.J. Lu.
497 * Math library bug fixes. A thorough audit of all open math library bugs was
498 conducted by Joseph Myers. Significant progress was made on many math
499 library bugs resulting in more accurate exceptions and function results.
500 Many thanks to all those that contributed including Andreas Jaeger for his
501 patch review and work on the x87 trigonometric instruction issues.
503 * Timezone data is no longer installed. Timezone-related binaries and scripts
504 will continue to be installed. Users should obtain their timezone data from
505 their distribution provider or from the tzdata package at
506 <ftp://munnari.oz.au/pub/>.
507 \f
508 Version 2.15
510 * The following bugs are resolved with this release:
512 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
513 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
514 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
515 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
516 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
517 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
518 13484, 13506, 13515, 13523, 13524, 13538, 13540
520 * New program pldd to list loaded object of a process
521 Implemented by Ulrich Drepper.
523 * Add nss_db support back to glibc. No more dependency on Berkeley db
524 and support for initgroups lookups.
525 Implemented by Ulrich Drepper.
527 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
528 Contributed by HJ Lu.
530 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
531 Contributed by HJ Lu.
533 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
534 on x86-32 and x86-64.
535 Contributed by Liubov Dmitrieva.
537 * Optimized strchr and strrchr for SSE on x86-32.
538 Contributed by Liubov Dmitrieva.
540 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
541 for x86-64 and x86-32.
542 Contributed by Liubov Dmitrieva.
544 * New interfaces: scandirat, scandirat64
545 Implemented by Ulrich Drepper.
547 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
548 Implemented by Ulrich Drepper.
550 * nscd now also caches the netgroup database.
551 Implemented by Ulrich Drepper.
553 * Integrate libm with gcc's -ffinite-math-only option.
554 Implemented by Ulrich Drepper.
556 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
557 to math functions. Implemented by Ulrich Drepper.
559 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
560 Implemented by Ulrich Drepper.
562 * New Linux interfaces: process_vm_readv, process_vm_writev
564 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
565 Implemented by Ulrich Drepper.
567 * Optimized nearbyint and strcasecmp for PPC.
568 Implemented by Adhemerval Zanella.
570 * New locales: bho_IN, unm_US, es_CU, ta_LK
571 \f
572 Version 2.14
574 * The following bugs are resolved with this release:
576 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
577 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
578 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
579 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
580 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
581 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
582 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
583 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
584 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
585 12795, 12811, 12813, 12814, 12841
587 * The RPC implementation in libc is obsoleted. Old programs keep working
588 but new programs cannot be linked with the routines in libc anymore.
589 Programs in need of RPC functionality must be linked against TI-RPC.
590 The TI-RPC implementation is IPv6 enabled and there are other benefits.
592 Visible changes of this change include (obviously) the inability to link
593 programs using RPC functions without referencing the TI-RPC library and the
594 removal of the RPC headers from the glibc headers.
595 Implemented by Ulrich Drepper.
597 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
598 syncfs, setns, sendmmsg
600 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
601 yue_HK, lij_IT, mhr_RU
603 * New encodings: CP770, CP771, CP772, CP773, CP774
605 * New program sotruss to trace calls through PLTs
606 Implemented by Ulrich Drepper.
608 * The malloc hook implementation is marked deprecated and will be removed
609 from the default implementation in the next version. The design never
610 worked ever since the introduction of threads. Even programs which do
611 not create threads themselves can use multiple threads created internally.
612 \f
613 Version 2.13
615 * The following bugs are resolved with this release:
617 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
618 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
619 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
620 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
621 12378, 12394, 12397
623 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
625 * POWER7 optimizations: memset, memcmp, strncmp
627 * New optimized string functions for x86-64: strnlen (SSE2),
628 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
629 Implemented by Ulrich Drepper.
630 \f
631 Version 2.12
633 * The following bugs are resolved with this release:
635 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
636 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
637 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
638 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
639 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
640 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
641 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
642 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
644 * New interfaces: pthread_getname_np, pthread_setname_np
646 * New Linux interface: recvmmsg
648 * STT_GNU_IFUNC implemented for Sparc by David Miller.
650 * The dynamic linker now recognizes supported ABI versions from the
651 EI_ABIVERSION field in the ELF header.
652 Implemented by Ulrich Drepper.
654 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
655 will not be used to fill in password fields in the passwd.byname replies.
656 Instead it is used to synthesize the shadow.byname table, should it be
657 missing. This is a useful mode in some installations involving Solaris.
658 Implemented by Ulrich Drepper.
660 * New locales: kok_IN, sq_MK, cv_RU
661 \f
662 Version 2.11
664 * The following bugs are resolved with this release:
666 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
667 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
668 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
669 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
670 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
671 10789, 10817, 10823, 10840, 10847
673 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
674 mkostemps64
675 Implemented by Ulrich Drepper.
677 * Checking version of longjmp added that fails if an uninitialized stack
678 frame would be created. Implemented by Ulrich Drepper.
680 * STT_GNU_IFUNC is now supported in static executables.
681 Implemented by H.J. Lu.
683 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
685 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
686 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
687 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
688 Contributed by H.J. Lu.
690 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
691 Implemented by Ulrich Drepper.
693 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
694 strstr, strcasestr.
695 Contributed by H.J. Lu.
697 * Support for fma instruction in AVX on x86-64.
698 Implemented by H.J. Lu and Ulrich Drepper.
700 * AVX support in x86-64 auditing support in ld.so.
701 Implemented by H.J. Lu.
703 * STB_GNU_UNIQUE support added.
704 Implemented by Ulrich Drepper.
706 * Implement second fallback mode for optimized DNS lookup for even more
707 broken environments. If two requests from the same port are not
708 handled correctly close the socket and open a new one before sending
709 the second request. The 'single-request-reopen' option in /etc/resolv.conf
710 can be used to select this mode right away, instead of rediscovering the
711 necessity is every process again.
712 Implemented by Ulrich Drepper.
714 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
715 Implemented by Adam Tkac.
717 * Optimized iconv conversions for S390x.
718 Implemented by Andreas Krebbel.
720 * Using condvars with PI mutexes is now more efficient due to kernel
721 support for requeueing to PI futexes. NPTL support added for x86-64.
722 Implemented by Ulrich Drepper.
724 * New locales: ps_AF, my_MM
725 \f
726 Version 2.10
728 * The following bugs are resolved with this release:
730 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
731 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
732 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
733 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
734 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
736 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
737 Implemented by Ulrich Drepper.
739 * New Linux interfaces: accept4, fallocate, fallocate64.
740 Implemented by Ulrich Drepper.
742 * Correct declarations of string function when used in C++ code. This
743 could lead to compile errors for invalid C++ code.
745 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
746 now in POSIX.
748 * New POSIX 2008 interface: psiginfo
749 Implemented by Ulrich Drepper.
751 * New ISO C++1x interfaces: quick_exit, at_quick_exit
752 Implemented by Ulrich Drepper.
754 * Support for selecting between multiple function definitions at runtime
755 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
757 * The libcrypt library can now use the hash function implementations in
758 NSS. Implemented by Ulrich Drepper.
760 * The malloc implementation can be compiled to be less memory efficient
761 but higher performing in multi-threaded programs.
762 Implemented by Ulrich Drepper.
764 * New locales: nan_TW@latin, ks_IN
766 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
767 Implemented by Ulrich Drepper.
769 * Extended printf hook support. It is possible to use user-defined types
770 and extend existing format specifiers.
771 Implemented by Ulrich Drepper.
773 * Handling for group shadow files has been added.
774 Implemented by Ulrich Drepper.
776 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
777 servers (the case, e.g., for some people using the built-in DNS
778 server in ADSL modems/routers). There is a once-per-process timeout
779 in case of a broken server. To avoid it, users can run nscd or put
780 'options single-request' in /etc/resolv.conf.
781 Implemented by Ulrich Drepper.
782 \f
783 Version 2.9
785 * The following bugs are resolved with this release:
787 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
788 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
789 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
790 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
791 6968, 6974, 6980, 6995, 7008, 7009, 7029
793 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
794 up at the same time. Implemented by Ulrich Drepper.
796 * TLS descriptors for LD and GD on x86 and x86-64.
797 Implemented by Alexandre Oliva.
799 * getaddrinfo now handles DCCP and UDPlite.
800 Implemented by Ulrich Drepper.
802 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
803 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
804 Implemented by Ulrich Drepper.
806 * New implementation of memmem, strstr, and strcasestr which is O(n).
807 Implemented by Eric Blake.
809 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
811 * Implement "e" option for popen to open file descriptor with the
812 close-on-exec flag set. Implemented by Ulrich Drepper.
814 * Implement "b" mode for fmemopen. In this mode writes writes don't
815 implicitly add a NUL byte and seeks from the end of the buffer really
816 use the buffer end, not the string length as the basis.
817 Implemented by Ulrich Drepper.
819 * Many functions, exported and internal, now atomically set the close-on-exec
820 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
822 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
823 Sinhala)
824 Implemented by Pravin Satpute.
826 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
827 \f
828 Version 2.8
830 * The following bugs are resolved with this release:
832 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
833 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
834 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
835 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
836 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
837 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
838 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
840 * New locales: bo_CN, bo_IN, shs_CA.
842 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
844 * Sorting rules for some Indian languages (Devanagari and Gujarati).
845 Implemented by Pravin Satpute.
847 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
849 * nscd caches now all timeouts for DNS entries
850 Implemented by Ulrich Drepper.
852 * nscd is more efficient and wakes up less often.
853 Implemented by Ulrich Drepper.
855 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
856 vdprintf, and obstack_vprintf.
857 Implemented by Jakub Jelinek.
859 * Faster memset for x86-64.
860 Implemented by Harsha Jagasia and H.J. Lu.
862 * Faster memcpy on x86.
863 Implemented by Ulrich Drepper.
865 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
866 Implemented by Ulrich Drepper.
868 * Faster sqrt and sqrtf implemention for some PPC variants.
869 Implemented by Steven Munroe.
870 \f
871 Version 2.7
873 * The following bugs are resolved with this release:
875 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
876 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
877 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
878 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
879 5071, 5103, 5104, 5112, 5113, 5184, 5186
881 * More checking functions: fread, fread_unlocked, open*, mq_open.
882 Implemented by Jakub Jelinek and Ulrich Drepper.
884 * Extend fortification to C++. Implemented by Jakub Jelinek.
886 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
887 by not recognizing 'a' as a modifier when those specs are requested.
888 Implemented by Jakub Jelinek.
890 * PPC optimizations to math and string functions.
891 Implemented by Steven Munroe.
893 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
894 options to be passed. Implemented by Ulrich Drepper.
896 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
898 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
899 Implemented by Ulrich Drepper.
901 * Handle private futexes in the NPTL implementation.
902 Implemented by Jakub Jelinek and Ulrich Drepper.
904 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
905 Implemented by Roland McGrath and Ulrich Drepper.
907 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
909 * SHA-256 and SHA-512 based password encryption.
910 Implemented by Ulrich Drepper.
912 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
913 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
914 yo_NG.
916 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
917 Implemented by Ulrich Drepper.
918 \f
919 Version 2.6
921 * The following bugs are resolved with this release:
923 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
924 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
925 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
926 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
927 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
928 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
929 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
930 4702, 4858
932 * New Linux interfaces: epoll_pwait, sched_getcpu.
934 * New generic interfaces: strerror_l.
936 * nscd can now cache the services database. Implemented by Ulrich Drepper.
937 \f
938 Version 2.5
940 * The following bugs are resolved with this release:
942 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
943 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
944 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
945 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
946 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
947 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
948 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
949 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
950 3225, 3251, 3252, 3253, 3273
952 * For Linux, the sorting of addresses returned by getaddrinfo now also
953 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
954 Implemented by Ulrich Drepper.
956 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
957 Implemented by Ulrich Drepper.
959 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
961 * New iconv module for MIK. Contributed by Alexander Shopov.
963 * For sites with broken group and/or passwd database, the auto-propagate
964 option of nscd can prevent creating ID lookup entries from the results
965 of a name lookup and vice versa. This usually is no problem but some
966 site might have problems with the default behavior.
967 Implemented by Ulrich Drepper.
969 * Iterating over entire database in NIS can be slow. With the
970 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
971 to trade time for memory. The entire database will be read at once.
972 Implemented by Ulrich Drepper.
974 * The interfaces introduced in RFC 3542 have been implemented by
975 Ulrich Drepper.
977 * Support for the new ELF hash table format was added by Ulrich Drepper.
979 * Support for priority inheritance mutexes added by Jakub Jelinek and
980 Ulrich Drepper.
982 * Support for priority protected mutexes added by Jakub Jelinek.
984 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
985 or_IN, csb_PL, fy_NL, sr_ME.
986 \f
987 Version 2.4
989 * More overflow detection functions.
991 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
992 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
994 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
995 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
996 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
997 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
998 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
999 by Masahide Washizawa.
1001 * It is now possible to install audit libraries for the dynamic linker using
1002 LD_AUDIT. Implemented by Ulrich Drepper.
1004 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1005 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1006 For a libc and libpthread that works well on Linux 2.4 kernels, we
1007 recommend using the stable 2.3 branch.
1009 * The new function open_wmemstream acts like open_memstream,
1010 but uses a wchar_t wide character buffer.
1012 * The new function ppoll is an improved version of poll, similar to pselect.
1014 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1015 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1016 renameat, unlinkat, linkat, symlinkat, readlinkat.
1018 * New Linux kernel system calls: unshare,
1019 inotify_init, inotify_add_watch, inotify_rm_watch.
1021 * The euidaccess function is now also known by the alias eaccess,
1022 for compatibility with some other systems.
1024 * Timezone data updated to 2006b version.
1025 \f
1026 Version 2.3.6
1028 * The following bugs are resolved with this release:
1030 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1031 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1032 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1033 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1034 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1035 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1037 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1039 * As of this release, GCC 4 can be used to compile the C Library.
1041 * Timezone data updated to 2005m version.
1042 \f
1043 Version 2.3.5
1045 * The following bugs are resolved with this release:
1047 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1048 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1049 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1050 777, 787, 821, 822, 823, 825
1052 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1053 \f
1054 Version 2.3.4
1056 * Support for RFC 3678. Real implementations exist only for Linux so far.
1057 Implemented by Ulrich Drepper.
1059 * nscd can now cache entries persistently. Expiring entries are reloaded.
1060 For speedups the cache can be shared in memory with client processes.
1061 Implemented by Ulrich Drepper.
1063 * nscd can now perform SELinux checks.
1064 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1066 * getaddrinfo queries are now cached. Canonical name lookup is performed
1067 efficiently.
1068 Implemented by Ulrich Drepper.
1070 * The nothrow function attribute is used when headers are used by gcc when
1071 compiling C code. This can avoid significant amounts of exception
1072 handling data.
1074 * The malloc functions perform more error checking and are stricter when
1075 it comes to reacting on errors. The default action is to terminate
1076 the process after showing an error message. Implemented by Ulrich Drepper.
1078 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1079 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1081 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1082 namespaces using the new function dlmopen(). This feature is of course,
1083 like most other dynamic loading functionality, not available in statically
1084 linked applications. Implemented by Ulrich Drepper.
1086 * Low-overhead boundary checking variants of string and some stdio functions
1087 were added. These are to be used in conjunction with a gcc patch by
1088 Jakub Jelinek which adds calls to these functions if possible.
1089 Implemented by Jakub Jelinek and Ulrich Drepper.
1091 * Old code for several operating systems and machine architectures that
1092 have not been in working condition in a long time have been removed from
1093 the main source tree maintained by the GNU C Library's maintainers.
1094 These files are now reside in the separate `ports' source module
1095 that is usable as an add-on when building the library.
1096 \f
1097 Version 2.3.3
1099 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1100 interrogate the dynamic linker, compatible with the Solaris interface.
1102 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1103 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1105 * getifaddrs now uses the netlink interface on Linux to get its information.
1106 Implemented by Thorsten Kukuk.
1108 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1109 Implemented by Ulrich Drepper.
1111 * support for non-executable stacks on x86 has been added. Changes mostly
1112 by Roland McGrath.
1114 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1115 and Ulrich Drepper.
1117 * getaddrinfo now performs destination address selection according to
1118 RFC 3484.
1119 \f
1120 Version 2.3.2
1122 * Thread-safe interfaces for many functions that access locale data
1123 were added in version 2.3, but these features were omitted from NEWS.
1124 Many functions have variants with an `_l' suffix that take a `locale_t'
1125 object as a parameter rather than consulting the current locale.
1126 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1127 create and maintain `locale_t' objects. Additionally, the new function
1128 `uselocale' sets "the current locale" (as used by functions not so
1129 parameterized) set for an individual thread. These features were added
1130 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1132 * The functions getresuid, getresgid, setresuid, and setresgid, which
1133 have long been available on Linux, are now declared in <unistd.h>
1134 and are now also available on the Hurd.
1136 * ELF thread-local storage support (TLS) now works on x86-64.
1138 * The new dynamic string token $LIB is expanded in shared library names.
1139 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1141 * Aldy Hernandez contributed complete software floating point support for
1142 PowerPC machines with no FPU.
1144 * fexecve is implemented on Linux.
1146 * The `btowc' function should work at least twice as fast due to
1147 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1149 * With approriate thread add-ons cancelable functions are now implemented
1150 in libc.so as well. No need to call the function in libpthread. This
1151 change allowed to finally disable the incorrect and expensive handling
1152 of weak definition in ld.so.
1154 * Yet more PLT entries in libc.so have been removed. We finally arrived
1155 at the bare minimum. Startup times improved appropriately.
1157 * Support for the new Linux/x86 system call interface was added. The
1158 AT_SYSINFO auxiliary vector entry is recognized and handled.
1159 \f
1160 Version 2.3
1162 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1163 charsets.
1165 * iconv (the program and the interface) now accepts empty names (excluding
1166 options like //TRANSLIT) to mean "use charset of current locale".
1168 * localedef can now transliterate characters in strings which are not in
1169 the provided charmap. The information from the input locale is used.
1171 * Prelinking support was added for ELF targets. This requires additional
1172 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1174 * Read-only stdio streams now use mmap to speed up operation by eliminating
1175 copying and buffer underflows. To use add 'm' to the mode string of
1176 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1178 * The malloc functions were completely rewritten by Wolfram Gloger based
1179 on Doug Lea's malloc-2.7.0.c.
1181 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1182 implementation of regex.
1184 * Bruno Haible upgraded the iconv and locale implementation to support
1185 Unicode 3.2.
1187 * Contents of the LC_* and LANG environment variables in the CEN style are
1188 not recognized anymore. It never was used. Change by Ulrich Drepper.
1190 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1191 thread-local storage (TLS) ABI on some platforms.
1192 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1194 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1195 EUC-JISX0213, and TSCII.
1197 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1198 BSD-compatible interface for getting all network interface addresses.
1199 Implementation for IPv4 by Roland McGrath.
1201 * Loading of locale data is faster due to the introduction of a locale
1202 archive. Implemented by Roland McGrath and Ulrich Drepper.
1204 * Startup times are significantly reduced by not using exported functions
1205 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1206 and Ulrich Drepper.
1208 * Steven Munroe contributed a port to PowerPC64/Linux.
1209 \f
1210 Version 2.2.6
1212 * The Hurd now uses the GNU libio implementation of stdio rather than the
1213 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1215 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1216 with the same behavior as the Linux system call of the same name.
1217 \f
1218 Version 2.2.5
1220 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1221 128-bit long double format.
1223 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1224 IBM1161, and IBM1162 charsets.
1226 * Andreas Jaeger contributed a port to x86-64/Linux.
1228 * Peter Bruin contributed a port to PowerPC/Hurd.
1230 * libc functions using I/O streams now can handle wide-oriented streams
1231 as well.
1233 * optimizations in the dynamic linker. Binaries created by recent binutils
1234 versions start up quicker due to reduced time spent on relocations.
1236 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1237 \f
1238 Version 2.2.4
1240 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1241 asinh, atanh, j0 for the 128-bit long double format.
1243 * Bruno Haible updated all the code handling Unicode in some form to
1244 support Unicode 3.1.
1246 * Speed of regex for single-byte locales is back to previous levels.
1247 Patch by Isamu Hasegawa.
1249 * Alpha, SPARC, and IA-64 now also using floating stacks.
1251 * Startup time of internationalized applications greatly improved through
1252 iconv cache. Use iconvconfig to generate the cache file.
1253 Contributed by Ulrich Drepper.
1255 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1256 severe performance problems. Patch by David Mosberger.
1258 * The Hurd port got a lot more functionality like AIO, various stdio
1259 extensions, etc. Mainly done by Roland McGrath.
1261 * mtrace can now lookup symbols in shared libraries.
1262 \f
1263 Version 2.2.3
1265 * Intel's IA-64 math library is largely integrated. It provides fast and
1266 accurate implementatations for most basic and standard math functions
1267 in float, double, and long double format.
1269 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1270 and asin for the 96-bit long double format and asin, log, tan for the
1271 128-bit long double format.
1273 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1274 The basic double functions exist today. Contributed by Abraham Ziv
1275 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1276 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1278 * An asynchronous name lookup library was added. The interface is designed
1279 after POSIX AIO. The proposal was circulated beforehand to get comments.
1280 No negative ones came in. Implemented by Ulrich Drepper.
1282 * Port to S390/64bit contributed by Martin Schwidefsky
1283 <schwidefsky@de.ibm.com>.
1285 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1286 of functions for Linux/IA-64.
1288 * The RPC code is now thread safe. Threads can now use the same service
1289 of different services at the same time. Patch by Eric Norum
1290 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1292 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1293 family of functions for Linux/S390.
1295 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1296 of functions for Linux/x86.
1298 * Port to Linux/CRIS contributed by Axis Communications.
1299 \f
1300 Version 2.2.2
1302 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1303 we can now check for namespace violations and missing declarations. The
1304 result is that almost all headers are now Unix-compliant (as defined in
1305 the upcoming XPG6). The negative side is that some programs might need
1306 corrections, too, if they depend on the incorrect form of the headers in
1307 previous versions which defined too many symbols and included too many
1308 other headers.
1310 * regex now handles multibyte character sets correctly.
1311 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1313 * iconv (the program) does now conform to the upcoming XPG6 and handles
1314 charmaps. Instead of the charset names the path of charmaps can be
1315 provided and the conversion happens based on this data.
1316 Contributed by Ulrich Drepper.
1318 * The locale program now provides detailed information about the installed
1319 locales. While
1321 locale -a
1323 only lists the names of the supported locales
1325 locale -a --verbose
1327 provides details such as country, language, and codeset name.
1328 Contributed by Ulrich Drepper.
1329 \f
1330 Version 2.2.1
1332 * The gencat program now parses the input file according to the charset
1333 selected by the LC_CTYPE category. This is important for stateful
1334 character sets. To make generating catalogs easier there is a way
1335 to overwrite the charset selected by the locale: before the first
1336 message or $ quote line the catalog can contain a line like
1338 $ codeset=ISO-8859-2
1340 to select the charset (ISO-8859-2 in this case).
1342 Implemented by Shinya Hanataka and Ulrich Drepper.
1344 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1345 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1346 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1348 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1349 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1351 * The LANGUAGE environment variable is now ignored unless the locale is
1352 changed from the default "C" locale.
1354 * The usual bug fixes.
1355 \f
1356 Version 2.2
1358 * Greg McGary added runtime support for bounds checking using gcc's
1359 new -fbounded-pointers option. ix86 target is complete. PowerPC
1360 is in progress.
1362 * Thorsten Kukuk added secure mode support to nscd.
1364 * The Berkeley db libraries have been removed.
1366 Related, the nss_db module is now in a separate package since it
1367 obviously requires a database library being available.
1369 * Wide character I/O streams implemented by Ulrich Drepper.
1371 * Functions from the extended socket API added by Ulrich Drepper.
1373 * Functions feenableexcept and fedisableexcept to control the
1374 behaviour of individual exceptions have been added by Andreas Jaeger.
1376 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1378 * The resolver code has been updated from bind 8.2.3-T5B which supports
1379 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1380 and Mark Kettenis.
1382 This change could in some situations effect backward compatibility. Since
1383 now `_res' is a thread-local instead of a global variable, modifying it
1384 in one thread does not have any effect in other threads.
1386 The resolver library was also extended to allow IPv6 as the transport
1387 protocol for the requests. This work was done by Stig Venaas.
1389 * Compatibility code for K&R C compilers has been removed from the
1390 header files. A ISO C compiler is needed to use the library
1391 (conforming to either C89 or C99 standard).
1393 * Complete rewrite of the localedef program to support multibyte character
1394 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1395 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1396 Implemented by Ulrich Drepper.
1398 Bruno Haible significantly improved the generation and use of the data
1399 structures for the wide character tables.
1401 * Plural handling in gettext implemented by Ulrich Drepper.
1403 * The utmp daemon has been removed.
1405 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1407 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1408 and Yutaka Niibe.
1410 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1412 * POSIX barriers implemented by Kaz Kylheku.
1414 * POSIX spawn function family implemented by Ulrich Drepper.
1416 * POSIX spinlocks are now available.
1418 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1420 * the configure option --enable-kernel=X.Y.Z allows to strip out
1421 compatibility for kernel versions before X.Y.Z. This is currently only
1422 implemented for Linux.
1424 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1425 field sin6_scope_id. This means that all programs using IPv6 should be
1426 recompiled. Don't expect binary compatibility with previous glibc
1427 versions.
1429 * various conversion modules for IBM character sets contributed by
1430 Masahide Washizawa.
1432 * IA-64 port by Jes Sorensen and HJ Lu.
1433 \f
1434 Version 2.1.3
1436 * bug fixes
1438 \f
1439 Version 2.1.2
1441 * bug fixes
1443 \f
1444 Version 2.1.1
1446 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1448 * New xdr functions are added; some rpc functions are now 64bit clean.
1450 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1452 * Fixed known incompatibilities with glibc 2.0.
1454 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1456 * Optimized a number of functions (especially the ELF dynamic loader).
1458 * Update timezone data files.
1460 * lots of charmaps corrections
1462 * some new locale definitions and charmaps
1464 \f
1465 Version 2.1
1467 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1468 conform to POSIX member type requirements. Symbol versions have been
1469 adjusted as needed within the library, and for direct use by applications,
1470 but there is potential for problems if third-party libraries use
1471 struct timeval as part of their interface. This does not present
1472 a problem for X and other "essential" system libraries.
1474 * An additional locale model to support C++ Standard Library locale
1475 model and probably more was implemented by Ulrich Drepper.
1477 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1478 symbol level.
1480 * Miles Bader provided the `argp' function family to support hierachical
1481 command line argument parsing, layered on top of getopt.
1483 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1485 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1486 numbers.
1488 * scanf recognizes the %a and %A format for scanning floating point numbers.
1490 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1491 information and interfaces for the available integer types.
1493 * about 130 new math functions were added to implement the ISO C9x math
1494 library.
1496 * the new header <complex.h> contains definitions of the complex math
1497 functions from ISO C 9X.
1499 * the new header <tgmath.h> defines generic macros to use complex or
1500 real valued functions.
1502 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1504 * Andreas Jaeger provided a test suite for the math library.
1506 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1508 * Ulrich Drepper added character set conversion functions (iconv).
1510 * Optimized string functions have been added.
1512 * The localedata addon is now part of glibc.
1514 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1516 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1517 daemon for NSS (nscd).
1519 Missing a better place here are some numbers on improvements. Under
1520 Linux 2.1.125 un-tar-ing the kernel sources takes
1522 user system wall
1524 using local files 12.19s 6.88s 22.91s
1526 using NIS 13.92s 8.91s 26.34s
1528 using NIS & nscd 10.37s 7.34s 25.30s
1530 using NIS+ 27.57s 30.37s 640.46s
1532 using NIS+ & nscd 10.25s 7.83s 26.51s
1534 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1536 Keep in mind that non-namelookup related operations dominate above times.
1537 It was just a common complain that using NIS+ unpacking the kernel is
1538 horribly slow.
1540 [1] The old nscd implementation is not available anymore since it was
1541 distributed with glibc up to version 2.0.98 and thus is now replaced.
1543 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1545 * Mark Kettenis provided a Hesiod NSS module.
1547 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1548 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1550 * rcmd can now handle netgroups (Dick Streefland).
1552 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1553 Bambrough.
1555 * Support for the IPv6 protocol has been added to the socket API, as per the
1556 latest draft standards.
1558 * Support for Linux 2.2 has been added.
1560 * Interface changes relative to the latest 2.0.x release:
1561 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1562 addseverity NEW: Unix98
1563 alphasort64 NEW: LFS
1564 argp_err_exit_status NEW: argp, GNU ext
1565 argp_error NEW: argp, GNU ext
1566 argp_failure NEW: argp, GNU ext
1567 argp_help NEW: argp, GNU ext
1568 argp_parse NEW: argp, GNU ext
1569 argp_program_bug_address NEW: argp, GNU ext
1570 argp_program_version NEW: argp, GNU ext
1571 argp_program_version_hook NEW: argp, GNU ext
1572 argp_state_help NEW: argp, GNU ext
1573 argp_usage NEW: argp, GNU ext
1574 authdes_create NEW: Secure RPC
1575 authdes_getucred NEW: Secure RPC
1576 authdes_pk_create NEW: Secure RPC
1577 backtrace NEW: GNU ext.
1578 backtrace_symbols NEW: GNU ext.
1579 backtrace_symbols_fd NEW: GNU ext.
1580 cacos NEW: ISO C 9x
1581 cacosf NEW: ISO C 9x
1582 cacosh NEW: ISO C 9x
1583 cacoshf NEW: ISO C 9x
1584 cacoshl NEW: ISO C 9x
1585 cacosl NEW: ISO C 9x
1586 capget NEW: kernel
1587 capset NEW: kernel
1588 carg NEW: ISO C 9x
1589 cargf NEW: ISO C 9x
1590 cargl NEW: ISO C 9x
1591 casin NEW: ISO C 9x
1592 casinf NEW: ISO C 9x
1593 casinh NEW: ISO C 9x
1594 casinhf NEW: ISO C 9x
1595 casinhl NEW: ISO C 9x
1596 casinl NEW: ISO C 9x
1597 catan NEW: ISO C 9x
1598 catanf NEW: ISO C 9x
1599 catanh NEW: ISO C 9x
1600 catanhf NEW: ISO C 9x
1601 catanhl NEW: ISO C 9x
1602 catanl NEW: ISO C 9x
1603 cbc_crypt NEW: Secure RPC
1604 ccos NEW: ISO C 9x
1605 ccosf NEW: ISO C 9x
1606 ccosh NEW: ISO C 9x
1607 ccoshf NEW: ISO C 9x
1608 ccoshl NEW: ISO C 9x
1609 ccosl NEW: ISO C 9x
1610 cexp NEW: ISO C 9x
1611 cexpf NEW: ISO C 9x
1612 cexpl NEW: ISO C 9x
1613 cimag NEW: ISO C 9x
1614 cimagf NEW: ISO C 9x
1615 cimagl NEW: ISO C 9x
1616 clearerr_locked REMOVED
1617 clntunix_create NEW: sunrpc ext
1618 clog NEW: ISO C 9x
1619 clog10 NEW: ISO C 9x
1620 clog10f NEW: ISO C 9x
1621 clog10l NEW: ISO C 9x
1622 clogf NEW: ISO C 9x
1623 clogl NEW: ISO C 9x
1624 conj NEW: ISO C 9x
1625 conjf NEW: ISO C 9x
1626 conjl NEW: ISO C 9x
1627 cpow NEW: ISO C 9x
1628 cpowf NEW: ISO C 9x
1629 cpowl NEW: ISO C 9x
1630 cproj NEW: ISO C 9x
1631 cprojf NEW: ISO C 9x
1632 cprojl NEW: ISO C 9x
1633 creal NEW: ISO C 9x
1634 crealf NEW: ISO C 9x
1635 creall NEW: ISO C 9x
1636 creat64 NEW: LFS
1637 csin NEW: ISO C 9x
1638 csinf NEW: ISO C 9x
1639 csinh NEW: ISO C 9x
1640 csinhf NEW: ISO C 9x
1641 csinhl NEW: ISO C 9x
1642 csinl NEW: ISO C 9x
1643 csqrt NEW: ISO C 9x
1644 csqrtf NEW: ISO C 9x
1645 csqrtl NEW: ISO C 9x
1646 ctan NEW: ISO C 9x
1647 ctanf NEW: ISO C 9x
1648 ctanh NEW: ISO C 9x
1649 ctanhf NEW: ISO C 9x
1650 ctanhl NEW: ISO C 9x
1651 ctanl NEW: ISO C 9x
1652 des_setparity NEW: Secure RPC
1653 ecb_crypt NEW: Secure RPC
1654 endutxent NEW: Unix98
1655 exp10 NEW: ISO C 9x
1656 exp10f NEW: ISO C 9x
1657 exp10l NEW: ISO C 9x
1658 exp2 NEW: ISO C 9x
1659 exp2f NEW: ISO C 9x
1660 exp2l NEW: ISO C 9x
1661 fattach NEW: STREAMS
1662 fdetach NEW: STREAMS
1663 fdim NEW: ISO C 9x
1664 fdimf NEW: ISO C 9x
1665 fdiml NEW: ISO C 9x
1666 feclearexcept NEW: ISO C 9x
1667 fegetenv NEW: ISO C 9x
1668 fegetexceptflag NEW: ISO C 9x
1669 fegetround NEW: ISO C 9x
1670 feholdexcept NEW: ISO C 9x
1671 feof_locked REMOVED
1672 feraiseexcept NEW: ISO C 9x
1673 ferror_locked REMOVED
1674 fesetenv NEW: ISO C 9x
1675 fesetexceptflag NEW: ISO C 9x
1676 fesetround NEW: ISO C 9x
1677 fetestexcept NEW: ISO C 9x
1678 feupdateenv NEW: ISO C 9x
1679 fflush_locked REMOVED
1680 ffsl NEW: GNU ext.
1681 ffsll NEW: GNU ext.
1682 fgetpos64 NEW: LFS
1683 fgets_unlocked NEW: GNU ext.
1684 fileno_locked REMOVED
1685 fma NEW: ISO C 9x
1686 fmaf NEW: ISO C 9x
1687 fmal NEW: ISO C 9x
1688 fmax NEW: ISO C 9x
1689 fmaxf NEW: ISO C 9x
1690 fmaxl NEW: ISO C 9x
1691 fmin NEW: ISO C 9x
1692 fminf NEW: ISO C 9x
1693 fminl NEW: ISO C 9x
1694 fmtmsg NEW: Unix98
1695 fopen64 NEW: LFS
1696 fputc_locked REMOVED
1697 fputs_unlocked NEW: GNU ext.
1698 fread_unlocked NEW: GNU ext.
1699 freopen64 NEW: LFS
1700 fseeko NEW: Unix98
1701 fsetpos64 NEW: LFS
1702 fstatfs64 NEW: LFS
1703 fstatvfs NEW: Unix98
1704 fstatvfs64 NEW: LFS
1705 ftello NEW: Unix98
1706 ftello64 NEW: LFS
1707 ftruncate64 NEW: LFS
1708 ftw64 NEW: LFS
1709 fwrite_unlocked NEW: GNU ext.
1710 gai_strerror NEW: IPv6
1711 gamma_r REMOVED
1712 gammaf_r REMOVED
1713 gammal_r REMOVED
1714 getchar_locked REMOVED
1715 getdate NEW: Unix98
1716 getdate_err NEW: Unix98
1717 getdate_r NEW: GNU ext.
1718 getmsg NEW: STREAMS
1719 getnameinfo NEW: IPv6
1720 getnetname NEW: Secure RPC
1721 getpmsg NEW: STREAMS
1722 getpt NEW: Unix98 PTY
1723 getrlimit64 NEW: LFS
1724 getutxent NEW: Unix98
1725 getutxid NEW: Unix98
1726 getutxline NEW: Unix98
1727 glob64 NEW: GNU ext.
1728 globfree64 NEW: GNU ext.
1729 gnu_get_libc_release NEW: GNU ext.
1730 gnu_get_libc_version NEW: GNU ext.
1731 grantpt NEW: Unix98 PTY
1732 host2netname NEW: Secure RPC
1733 iconv NEW: iconv
1734 iconv_close NEW: iconv
1735 iconv_open NEW: iconv
1736 if_freenameindex NEW: IPv6
1737 if_indextoname NEW: IPv6
1738 if_nameindex NEW: IPv6
1739 if_nametoindex NEW: IPv6
1740 in6addr_any NEW: IPv6
1741 in6addr_loopback NEW: IPv6
1742 inet6_isipv4mapped NEW: IPv6
1743 isastream NEW: STREAMS
1744 iswblank NEW: GNU ext.
1745 key_decryptsession NEW: Secure RPC
1746 key_decryptsession_pk NEW: Secure RPC
1747 key_encryptsession NEW: Secure RPC
1748 key_encryptsession_pk NEW: Secure RPC
1749 key_gendes NEW: Secure RPC
1750 key_get_conv NEW: Secure RPC
1751 key_secretkey_is_set NEW: Secure RPC
1752 key_setnet NEW: Secure RPC
1753 key_setsecret NEW: Secure RPC
1754 llrint NEW: ISO C 9x
1755 llrintf NEW: ISO C 9x
1756 llrintl NEW: ISO C 9x
1757 llround NEW: ISO C 9x
1758 llroundf NEW: ISO C 9x
1759 llroundl NEW: ISO C 9x
1760 log2 NEW: ISO C 9x
1761 log2f NEW: ISO C 9x
1762 log2l NEW: ISO C 9x
1763 lrint NEW: ISO C 9x
1764 lrintf NEW: ISO C 9x
1765 lrintl NEW: ISO C 9x
1766 lround NEW: ISO C 9x
1767 lroundf NEW: ISO C 9x
1768 lroundl NEW: ISO C 9x
1769 lseek64 NEW: LFS
1770 makecontext NEW: Unix98
1771 mempcpy NEW: GNU ext.
1772 mmap64 NEW: LFS
1773 moncontrol REMOVED
1774 modify_ldt NEW: kernel
1775 nan NEW: ISO C 9x
1776 nanf NEW: ISO C 9x
1777 nanl NEW: ISO C 9x
1778 nearbyint NEW: ISO C 9x
1779 nearbyintf NEW: ISO C 9x
1780 nearbyintl NEW: ISO C 9x
1781 netname2host NEW: Secure RPC
1782 netname2user NEW: Secure RPC
1783 nexttoward NEW: ISO C 9x
1784 nexttowardf NEW: ISO C 9x
1785 nexttowardl NEW: ISO C 9x
1786 nftw NEW: Unix98
1787 nftw64 NEW: LFS
1788 open64 NEW: LFS
1789 passwd2des NEW: Secure RPC
1790 pow10 NEW: GNU ext.
1791 pow10f NEW: GNU ext.
1792 pow10l NEW: GNU ext.
1793 pread NEW: Unix98
1794 pread64 NEW: LFS
1795 printf_size NEW: GNU ext.
1796 printf_size_info NEW: GNU ext.
1797 profil_counter REMOVED
1798 pthread_mutexattr_getkind_np REPLACED
1799 pthread_mutexattr_setkind_np REPLACED
1800 ptsname NEW: Unix98 PTY
1801 ptsname_r NEW: Unix98 PTY
1802 putc_locked REMOVED
1803 putchar_locked REMOVED
1804 putgrent NEW: GNU ext.
1805 putmsg NEW: STREAMS
1806 putpmsg NEW: STREAMS
1807 pututxline NEW: Unix98
1808 pwrite NEW: Unix98
1809 pwrite64 NEW: LFS
1810 readdir64 NEW: LFS
1811 readdir64_r NEW: LFS
1812 remquo NEW: ISO C 9x
1813 remquof NEW: ISO C 9x
1814 remquol NEW: ISO C 9x
1815 round NEW: ISO C 9x
1816 roundf NEW: ISO C 9x
1817 roundl NEW: ISO C 9x
1818 rtime NEW: GNU ext.
1819 scalbln NEW: ISO C 9x
1820 scalblnf NEW: ISO C 9x
1821 scalblnl NEW: ISO C 9x
1822 scandir64 NEW: LFS
1823 sendfile NEW: kernel
1824 setcontext NEW: Unix98
1825 setrlimit64 NEW: LFS
1826 setutxent NEW: Unix98
1827 sighold NEW: Unix98
1828 sigignore NEW: Unix98
1829 sigqueue NEW: POSIX.1b
1830 sigrelse NEW: Unix98
1831 sigset NEW: POSIX.1b
1832 sigtimedwait NEW: POSIX.1b
1833 sigwaitinfo NEW: POSIX.1b
1834 sincos NEW: GNU ext.
1835 sincosf NEW: GNU ext.
1836 sincosl NEW: GNU ext.
1837 statfs64 NEW: LFS
1838 statvfs NEW: Unix98
1839 statvfs64 NEW: LFS
1840 strcasestr NEW: GNU ext.
1841 strtoimax NEW: ISO C 9x
1842 strtoumax NEW: ISO C 9x
1843 strverscmp NEW: GNU ext.
1844 svcauthdes_stats NEW: Secure RPC
1845 svcunix_create NEW: sunrpc etx
1846 svcunixfd_create NEW: sunrpc ext
1847 swapcontext NEW: Unix98
1848 tcgetsid NEW: Unix98 PTY
1849 tdestroy NEW: GNU ext.
1850 tgamma NEW: ISO C 9x
1851 tgammaf NEW: ISO C 9x
1852 tgammal NEW: ISO C 9x
1853 tmpfile64 NEW: LFS
1854 trunc NEW: ISO C 9x
1855 truncate64 NEW: LFS
1856 truncf NEW: ISO C 9x
1857 truncl NEW: ISO C 9x
1858 umount2 NEW: kernel
1859 unlockpt NEW: Unix98 PTY
1860 updwtmpx NEW: Unix98
1861 user2netname NEW: Secure RPC
1862 utmpxname NEW: Unix98
1863 versionsort NEW: GNU ext.
1864 versionsort64 NEW: GNU ext.
1865 waitid NEW: Unix98
1866 wcscasecmp NEW: GNU ext.
1867 wcsncasecmp NEW: GNU ext.
1868 wcsnlen NEW: GNU ext.
1869 wcstoimax NEW: ISO C 9x
1870 wcstoll NEW: ISO C 9x
1871 wcstoull NEW: ISO C 9x
1872 wcstoumax NEW: ISO C 9x
1873 wcswcs NEW: Unix98
1874 wordexp NEW: POSIX.2
1875 wordfree NEW: POSIX.2
1876 write_profiling REMOVED
1877 xdecrypt NEW: Secure RPC
1878 xdr_authdes_cred NEW: Secure RPC
1879 xdr_authdes_verf NEW: Secure RPC
1880 xdr_cryptkeyarg NEW: Secure RPC
1881 xdr_cryptkeyarg2 NEW: Secure RPC
1882 xdr_cryptkeyres NEW: Secure RPC
1883 xdr_getcredres NEW: Secure RPC
1884 xdr_key_netstarg NEW: Secure RPC
1885 xdr_key_netstres NEW: Secure RPC
1886 xdr_keybuf NEW: Secure RPC
1887 xdr_keystatus NEW: Secure RPC
1888 xdr_netnamestr NEW: Secure RPC
1889 xdr_sizeof NEW: Secure RPC
1890 xdr_unixcred NEW: sunrpc ext
1891 xencrypt NEW: Secure RPC
1892 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1893 \f
1894 Version 2.0.6
1896 * more bug fixes
1898 \f
1899 Version 2.0.5
1901 * more bug fixes
1903 * inet_ntoa is thread-safe
1905 * updwtmp is moved from libutil to libc
1907 * rewrite of cbrt function
1909 * update of timezone data
1910 \f
1911 Version 2.0.4
1913 * more bug fixes
1914 \f
1915 Version 2.0.3
1917 * more bug fixes
1918 \f
1919 Version 2.0.2
1921 * more bug fixes
1923 * add atoll function
1925 * fix complex problems in Berkeley DB code
1927 * fix math functions
1928 \f
1929 Version 2.0.1
1931 * fixed lots of header problems (especially Linux/GNU specific)
1933 * dynamic loader preserves all registers
1935 * Roland McGrath provided support for handling of auxiliary objects in
1936 the ELF dynamic loader.
1938 * support for parallel builds is improved
1939 \f
1940 Version 2.0
1942 * GNU extensions are no longer declared by default. To enable them you
1943 must define the macro `_GNU_SOURCE' in your program or compile with
1944 `-D_GNU_SOURCE'.
1946 * The library has changed from using GNU ld symbol aliases to using weak
1947 symbols where available. The ELF object file format supports weak
1948 symbols; GNU ld also supports weak symbols in the a.out format. (There
1949 is also now support for other GNU ld extensions in ELF. Use the
1950 `--with-elf' option to configure to indicate you have ELF, and
1951 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1952 of many files which contained only symbol aliases, reducing the size of
1953 the source and the compiled library; many other files were renamed to
1954 less cryptic names previously occupied by the symbol alias files.
1955 There is a new header file <elf.h> for programs which operate on
1956 files in the ELF format.
1958 * Converted to Autoconf version 2, so `configure' has more options.
1959 Run `configure --help' to see the details.
1961 * The library can now be configured to build profiling, highly-optimized
1962 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1963 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1964 `configure' enable building these extra libraries. The shared library is
1965 built by default when using both ELF and GNU ld. When shared libraries
1966 are enabled, the new library `-ldl' is available for arbitrary run-time
1967 loading of shared objects; its interface is defined in <dlfcn.h>. The
1968 new header file <link.h> gives access to the internals of the run-time
1969 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1970 application of same name on other systems and it provides information
1971 about dynamically linked binaries.
1973 * The C library now provides the run-time support code for profiling
1974 executables compiled with `-pg'. Programs can control the profiling code
1975 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1976 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1977 the support for this file format was contributed by David Mosberger-Tang.
1979 * The math code has been replaced with a math library based on fdlibm from
1980 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1981 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1982 functions. The math functions now reside in a separate library, so
1983 programs using them will need to use `-lm' their linking commands.
1985 * John C. Bowman contributed optimized ix87 assembler inline functions.
1987 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1988 mechanism similar to that found in Solaris 2. This is now used for the
1989 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1990 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1991 file controls what services are used for each individual database. This
1992 works by loading shared libraries with names specified in `nsswitch.conf',
1993 so service modules can be changed or added at any time without even
1994 relinking any program. Currently there are the file, db, and NIS based
1995 NSS services available.
1997 * The new functions `strtoq' and `strtouq' parse integer values from
1998 strings, like `strtol' and `strtoul', but they return `long long int' and
1999 `unsigned long long int' values, respectively (64-bit quantities).
2001 * The new functions `strtof' and `strtold' parse floating-point values from
2002 strings, like `strtod', but they return `float' and `long double' values,
2003 respectively (on some machines `double' and `long double' are the same).
2005 * Ulrich Drepper has contributed new implementations of the floating-point
2006 printing and reading code used in the `printf' family of functions and
2007 `strtod', `strtof', and `strtold'. These new functions are perfectly
2008 accurate, and much faster than the old ones.
2010 * The implementation of the POSIX locale model was completely rewritten by
2011 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2012 to compile the POSIX locale definition.
2014 * The former dummy implementations of the strcoll and strxfrm function are
2015 now replaced by fully functional code contributed by Ulrich Drepper. The
2016 collation information comes from the POSIX locale definitions.
2018 * The new header <langinfo.h> defines an interface for accessing
2019 various locale-dependent data (using the locale chosen with `setlocale').
2021 * Ulrich Drepper has contributed a new suite of functions for operation on
2022 wide-character and multibyte-character strings, in <wchar.h>;
2023 and classification and case conversion of wide characters, in <wctype.h>.
2024 These new functions are conforming to the ISO C, Amendement 1 specification.
2026 * There is now a second implementation of the standard I/O library available.
2027 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2028 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2030 * You can now use positional parameter specifications in format strings
2031 for the `printf' and `scanf' families of functions. For example,
2032 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2033 ``Number 6, Mr Jones''. This is mainly useful when providing different
2034 format strings for different languages, whose grammars may dictate
2035 different orderings of the values being printed. To support this
2036 feature, the interface for `register_printf_handler' has changed; see
2037 the header file <printf.h> for details.
2039 * The `printf' and `scanf' families of functions now understand a new
2040 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2041 to group numbers as indicated by the locale; for `scanf' and friends, this
2042 says to accept as valid only a number with all the proper grouping
2043 separators in the right places. In the default "C" locale, numbers are
2044 not grouped; but locales for specific countries will define the usual
2045 conventions (i.e. separate thousands with `,' in the US locale).
2047 * The pgrp functions have been regularized, slightly incompatibly but much
2048 less confusingly. The core functions are now `getpgid' and `setpgid',
2049 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2050 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2051 provided for compatibility. There is no longer an incompatible `getpgrp'
2052 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2054 * The new header file <fts.h> and suite of functions simplify programs that
2055 operate on directory trees. This code comes from 4.4 BSD.
2057 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2058 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2059 NSS scheme used in glibc.
2061 * There is a new malloc debugging hook `__memalign_hook'.
2063 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2064 `unsigned int' in <sys/types.h>. These are for compatibility only and
2065 their use is discouraged.
2067 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2068 done differently, so that it works even without GNU ld.
2070 * New function `euidaccess' checks allowed access to a file like `access',
2071 but using the effective IDs instead of the real IDs.
2073 * The time zone data files have been updated for the latest and greatest
2074 local time conventions of the countries of the world.
2076 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2077 see <dirent.h>.
2079 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2080 for formatting floating-point numbers. They are provided only for
2081 compatibility; new programs should use `sprintf' instead. There are
2082 also equivalent function for the `long double' floating-point type and
2083 all functions also exist in a reentrant form.
2085 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2086 functions for maintaining the login-record files (primarily of use to
2087 system programs such as `login'), and convenient functions for
2088 allocating and initializing a pseudo-terminal (pty) device.
2090 * Ulrich Drepper has contributed new support for System V style
2091 shared memory and IPC on systems that support it.
2093 * Ulrich Drepper has contributed several miscellaneous new functions found
2094 in System V: The `hsearch' family of functions provide an effective
2095 implementation of hash tables; `a64l' and `l64a' provide a very simple
2096 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2097 number generator.
2099 * Ulrich Drepper has contributed new reentrant counterparts for the
2100 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2102 * Ulrich Drepper has contributed new, highly-optimized versions of several
2103 string functions for the i486/Pentium family of processors.
2105 * Ulrich Drepper has updated the Linux-specific code, based largely
2106 on work done in Hongjiu Lu's version of GNU libc for Linux.
2107 The GNU library now supports Linux versions 2.0.10 and later,
2108 using the ELF object file format (i[3456]86-*-linux).
2110 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2112 * David Mosberger-Tang and Richard Henderson have ported the C library
2113 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2114 dynamic linking support for ELF/Alpha.
2116 * Richard Henderson contributed several Alpha optimized assembler function
2117 for arithmetic and string handling.
2119 * Ulrich Drepper has contributed a new set of message catalog functions to
2120 support multiple languages using the <libintl.h> interface, for use with
2121 his new package GNU gettext. Translation volunteers have contributed
2122 catalogs of the library's messages in Spanish, German, and Korean.
2124 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2125 program and the `catgets' function for reading the catalog files it
2126 creates. (The <libintl.h> interface is preferred; we include the
2127 <nl_types.h> interface using `catgets' only for source compatibility with
2128 programs already written to use it.)
2130 * New header file <values.h> gives SVID-compatible names for <limits.h>
2131 constants.
2133 * Various new macros, declarations, and small header files for compatibility
2134 with 4.4 BSD.
2136 * New function `group_member' is a convenient way to check if a process has
2137 a given effective group ID.
2139 * When using GCC 2.7 and later, the socket functions are now declared in a
2140 special way so that passing an argument of type `struct sockaddr_in *',
2141 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2142 `struct sockaddr *' type, does not generate a type-clash warning.
2144 * New function `error' declared in header file <error.h> is a convenient
2145 function for printing error messages and optionally exiting; this is the
2146 canonical function used in GNU programs. The new functions `err', `warn',
2147 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2148 doing the same thing.
2150 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2151 POSIX.2 `glob' function to do ~ and {...} expansion.
2153 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2154 `clearenv' which is used in POSIX.9 is also available.
2156 * New function `getsid' returns session ID number on systems that support it.
2158 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2159 files <db.h> and <mpool.h> provide a rich set of functions for several
2160 types of simple databases stored in memory and in files, and <ndbm.h> is
2161 an old `ndbm'-compatible interface using the `db' functions. Link with
2162 `-ldb' to get these functions.
2164 * New macro `strdupa' copies a string like `strdup', but uses local stack
2165 space from `alloca' instead of dynamic heap space from `malloc'.
2167 * New function `strnlen' is like `strlen' but searches only a given maximum
2168 number of characters for the null terminator. `stpncpy', `strndup' and
2169 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2170 function.
2172 * New function `statfs' in header <sys/statfs.h>.
2174 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2175 provide convenient functions for operating on blocks of null-terminated
2176 strings.
2178 * A new suite of functions in <utmp.h> handle all the details of reading
2179 and writing the utmp file.
2181 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2182 Thorsten Kukuk.
2184 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2185 completely POSIX compliant and also implemented the extended functionality
2186 to handle alternate digit representation and alternate era date formats.
2188 * Ulrich Drepper provided an implementation of the `strptime' function
2189 defined in XPG4.2 which transforms a string into a `struct tm' value.
2191 * Paul Eggert provided the tzselect shell script as part of the timezone
2192 code. The shell script makes it easy to select the correct timezone
2193 specification.
2195 * The implementation of the malloc family of functions is completely replaced
2196 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2197 The implementation uses the mmap function (if available) and it is
2198 optimized for the use in multi threaded programs.
2200 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2201 functions. This new functionality is usable by specifying a special
2202 salt string and it is compatible with implementation on *BSD systems.
2204 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2205 `getsubopt' to handle second level command line options, `bsd_signal'
2206 to access BSD style `signal' functionality, the obsolete `regexp' style
2207 expression matcher.
2209 * the `lchown' function is available on system which support this
2210 functionality.
2212 * The implementation of the shadow password handling function was contributed
2213 by Ulrich Drepper.
2215 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2217 * POSIX.1g support was added. The <sys/select.h> header is available,
2218 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2219 implementation of `getaddrinfo'.
2220 \f
2221 Version 1.09
2223 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2225 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2226 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2228 * The new function `daemon' from 4.4 BSD is useful for server programs that
2229 want to put themselves in the background.
2231 * Joel Sherrill has contributed support for several standalone boards that
2232 run without an operating system.
2234 * `printf', `scanf' and friends now accept a `q' type modifier for long
2235 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2237 * All of the code taken from BSD (notably most of the math and networking
2238 routines) has been updated from the BSD 4.4-Lite release.
2240 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2242 * The new functions `getdomainname' and `setdomainname' fetch or change the
2243 YP/NIS domain name. These are system calls which exist on systems which
2244 have YP (aka NIS).
2246 * The time zone data files have been updated for the latest international
2247 conventions.
2249 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2250 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2251 \f
2252 Version 1.08
2254 * The C library now includes support for Sun RPC, from Sun's free
2255 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2256 are included. (There is still no support for YP.)
2258 * Tom Quinn has contributed a port of the C library to SGI machines running
2259 Irix 4 (mips-sgi-irix4).
2261 * The new `lockf' function is a simplified interface to the locking
2262 facilities of `fcntl', included for compatibility.
2264 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2266 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2268 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2269 compatibility.
2271 * The error message printed by `assert' for a failed assertion now includes
2272 the name of the program (if using GNU ld) and the name of the calling
2273 function (with versions of GCC that support this).
2275 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2277 * The library now includes the <sys/mman.h> header file and memory
2278 management functions `mmap', `munmap', `mprotect', `msync', and
2279 `madvise', on systems that support those facilities.
2281 * The interface for `mcheck' has changed slightly: the function called to
2282 abort the program when an allocation inconsistency is detected now takes
2283 an argument that indicates the type of failure. The new function
2284 `mprobe' lets you request a consistency check for a particular block at
2285 any time (checks are normally done only when you call `free' or `realloc'
2286 on a block).
2288 * It is now possible to easily cross-compile the C library, building on one
2289 system a library to run on another machine and/or operating system. All
2290 you need to do is set the variable `HOST_CC' in `configparms' to the
2291 native compiler for programs to run on the machine you are building on (a
2292 few generator programs are used on Unix systems); set `CC' to the
2293 cross-compiler.
2295 * The new function `fexecve' (only implemented on the GNU system) executes
2296 a program file given a file descriptor already open on the file.
2297 \f
2298 Version 1.07
2300 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2301 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2303 * You can set the variable `libprefix' in `configparms' to specify a prefix
2304 to be prepended to installed library files; this makes it easy to install
2305 the GNU C library to be linked as `-lgnuc' or whatever.
2307 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2308 copies a limited number of characters from a string, and returns the
2309 address of the last character written.
2311 * You no longer need to check for whether the installed `stddef.h' is
2312 compatible with the GNU C library. configure now checks for you.
2314 * You can now define a per-stream `fileno' function to convert the
2315 stream's cookie into an integral file descriptor.
2317 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2318 allocates zero bytes of storage, and returns a unique pointer which
2319 you can pass to `realloc' or `free'. The behavior is undefined if
2320 you dereference this pointer.
2322 * The C library now runs on Sony NEWS m68k machines running either
2323 NewsOS 3 or NewsOS 4.
2325 * The new `syscall' function is a system-dependent primitive function
2326 for invoking system calls. It has the canonical behavior on Unix
2327 systems, including unreliable return values for some calls (such as
2328 `pipe', `fork' and `getppid').
2330 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2331 to `EAGAIN', which is the preferred name. On systems whose kernels
2332 use two distinct codes, the C library now translates EWOULDBLOCK to
2333 EAGAIN in every system call function.
2334 \f
2335 Version 1.06
2337 * The GNU C Library Reference Manual is now distributed with the library.
2338 `make dvi' will produce a DVI file of the printed manual.
2339 `make info' will produce Info files that you can read on line using C-h i
2340 in Emacs or the `info' program.
2341 Please send comments on the manual to bug-glibc-manual@gnu.org.
2343 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2345 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2347 * Jason Merrill has contributed a port to the Sequent Symmetry running
2348 Dynix version 3 (i386-sequent-dynix).
2350 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2351 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2353 * New function `memory_warnings' lets you arrange to get warnings when
2354 malloc is running out of memory to allocate, like Emacs gives you.
2356 * The C library now contains the relocating allocator used in Emacs 19 for
2357 its editing buffers. This allocator (ralloc) minimizes allocation
2358 overhead and fragmentation by moving allocated regions around whenever it
2359 needs to. You always refer to a ralloc'd region with a "handle" (a
2360 pointer to a pointer--an object of type `void **').
2362 * There is a new `printf' format: `%m' gives you the string corresponding
2363 to the error code in `errno'.
2365 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2366 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2367 pass, the `a' modifier says to fill in a `char **' you pass with a
2368 malloc'd string.
2370 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2371 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2372 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2374 * `mkstemp' is a traditional Unix function to atomically create and open a
2375 uniquely-named temporary file.
2376 \f
2377 Version 1.05
2379 * The standard location for the file that says what the local timezone is
2380 has changed again. It is now `/usr/local/etc/localtime' (or more
2381 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2383 * The distribution no longer contains any files with names longer than 14
2384 characters.
2386 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2387 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2389 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2390 \f
2391 Version 1.04
2393 * The configuration process has changed quite a bit. The `configure'
2394 script is now used just like the configuration scripts for other GNU
2395 packages. The `sysdeps' directory hierarchy is much rearranged.
2396 The file `INSTALL' explains the new scheme in detail.
2398 * The header files no longer need to be processed into ANSI C and
2399 traditional C versions. There is just one set of files to install, and
2400 it will work with ANSI or old C compilers (including `gcc -traditional').
2402 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2403 MIPS DECStation running Ultrix 4.
2405 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2406 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2407 made itself into a shared library.
2409 * Yet further improved support for the i386, running 4.3 BSD-like systems
2410 (such as Mach 3 with the Unix single-server), or System V.
2412 * New function `strncasecmp' to do case-insensitive string comparison
2413 with limited length.
2415 * New function `strsep' is a reentrant alternative to `strtok'.
2417 * New functions `scandir' and `alphasort' for searching directories.
2419 * New function `setenv' is a better interface to `putenv'.
2421 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2422 function for traversing a directory tree.
2424 * The GNU obstack package is now also part of the C library.
2425 The new function `open_obstack_stream' creates a stdio stream that
2426 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2427 formatted output directly to an obstack.
2429 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2430 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2432 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2434 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2435 things to your strings.
2437 * There are some new test programs: test-fseek, testmb, and testrand.
2439 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2440 These ports are not finished, but are a good starting place for really
2441 supporting those systems.
2443 * `/etc/localtime' is now the standard location for the file that says what
2444 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2445 This follows the general principle that `/etc' is the place for all local
2446 configuration files.
2448 * The C library header files now use `extern "C"' when used by the C++
2449 compiler, so the C library should now work with C++ code.
2451 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2452 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2453 in <strings.h>.)
2455 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2456 function which uses the `merge sort' algorithm, and is said to be
2457 significantly faster than the old GNU `qsort' function. Merge sort is
2458 now the standard `qsort' function. The new algorithm can require a lot
2459 of temporary storage; so, the old sorting function is called when the
2460 required storage is not available.
2462 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2463 provides the Unix `crypt' function, plus some other entry points.
2465 * The code and header files taken from 4.4 BSD have been updated with the
2466 latest files released from Berkeley.
2467 \f
2468 ----------------------------------------------------------------------
2469 Copyright information:
2471 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2473 Permission is granted to anyone to make or distribute verbatim copies
2474 of this document as received, in any medium, provided that the
2475 copyright notice and this permission notice are preserved,
2476 thus giving the recipient permission to redistribute in turn.
2478 Permission is granted to distribute modified versions
2479 of this document, or of portions of it,
2480 under the above conditions, provided also that they
2481 carry prominent notices stating who last changed them.
2482 \f
2483 Local variables:
2484 version-control: never
2485 fill-column: 76
2486 End: