1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 6652, 10672, 12847, 12926, 13862, 14132, 14138, 14171, 14498, 15215,
13 15884, 16469, 16617, 16619, 16657, 16740, 16857, 17192, 17266, 17344,
14 17363, 17370, 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508,
15 17522, 17555, 17570, 17571, 17572, 17573, 17574, 17581, 17582, 17583,
16 17584, 17585, 17589, 17594, 17601, 17608, 17616, 17625, 17633, 17634,
17 17647, 17653, 17657, 17664, 17665, 17668, 17682.
19 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
20 under certain input conditions resulting in the execution of a shell for
21 command substitution when the applicaiton did not request it. The
22 implementation now checks WRDE_NOCMD immediately before executing the
23 shell and returns the error WRDE_CMDSUB as expected.
25 * CVE-2012-3406 printf-style functions could run into a stack overflow when
26 processing format strings with a large number of format specifiers.
28 * The minimum GCC version that can be used to build this version of the GNU
29 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
30 still be used to compile programs using the GNU C Library.
32 * The GNU C Library is now built with -Werror by default. This can be
33 disabled by configuring with --disable-werror.
35 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
37 * The obsolete sigvec function has been removed. This was the original
38 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
39 programs have been using instead for about 25 years. Of course, ABI
40 compatibility for old binaries using sigvec remains intact.
42 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
43 with newer versions of bison.
47 * The following bugs are resolved with this release:
49 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
50 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
51 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
52 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
53 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
54 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
55 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
56 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
57 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
58 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
59 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
60 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
61 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
62 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
63 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
65 * Optimized strchrnul implementation for AArch64. Contributed by ARM Ltd.
67 * Reverted change of ABI data structures for s390 and s390x:
68 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
69 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
70 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
71 are preserved pointing straight to the same implementation as the old ones.
72 Given that, new callers will simply provide a too-big buffer to these
73 functions. Any applications/libraries out there that embed jmp_buf or
74 ucontext_t in an ABI-relevant data structure that have already been rebuilt
75 against 2.19 headers will have to rebuilt again. This is necessary in any
76 case to revert the breakage in their ABI caused by the glibc change.
78 * Support for file description locks is added to systems running the
79 Linux kernel. The standard file locking interfaces are extended to
80 operate on file descriptions, not file descriptors, via the use of
81 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
82 are associated with an open file instead of a process.
84 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
86 * The minimum Linux kernel version that this version of the GNU C Library
87 can be used with is 2.6.32.
89 * Running the testsuite no longer terminates as soon as a test fails.
90 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
91 with PASS or FAIL lines for individual tests. A summary of the results is
92 printed, including a list of failing lists, and "make check" exits with
93 error status if there were any unexpected failures. "make check
94 stop-on-test-failure=y" may be used to keep the old behavior.
96 * The am33 port, which had not worked for several years, has been removed
99 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
100 supported; they now act the same as _DEFAULT_SOURCE (but generate a
101 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
102 conflicted with POSIX (support for which was removed in 2.19), the
103 interfaces those macros enabled remain available when compiling with
104 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
107 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
109 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
110 This may improve lock scaling of existing programs on TX capable systems.
111 The lock elision code is only built with --enable-lock-elision=yes and
112 then requires a GCC version supporting the TX builtins. With lock elision
113 default mutexes are elided via __builtin_tbegin, if the cpu supports
114 transactions. By default lock elision is not enabled and the elision code
117 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
118 copy the path argument. This allowed programs to cause posix_spawn to
119 deference a dangling pointer, or use an unexpected pathname argument if
120 the string was modified after the posix_spawn_file_actions_addopen
123 * All supported architectures now use the main glibc sysdeps directory
124 instead of some being in a separate "ports" directory (which was
125 distributed separately before glibc 2.17).
127 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
128 On configurations that support it (all Linux configurations), it's now
129 used regardless of the --enable-add-ons switch to configure. It is no
130 longer possible to build such configurations without pthreads support.
132 * Locale names, including those obtained from environment variables (LANG
133 and the LC_* variables), are more tightly checked for proper syntax.
134 setlocale will now fail (with EINVAL) for locale names that are overly
135 long, contain slashes without starting with a slash, or contain ".." path
136 components. (CVE-2014-0475) Previously, some valid locale names were
137 silently replaced with the "C" locale when running in AT_SECURE mode
138 (e.g., in a SUID program). This is no longer necessary because of the
141 * On x86-64, the dynamic linker's lazy-binding support is now compatible
142 with application code using Intel MPX instructions. (With all previous
143 versions, the MPX register state could be clobbered when making calls
144 into or out of a shared library.) Note that while the new dynamic
145 linker is compatible with all known x86 hardware whether or not it
146 supports Intel MPX, some x86 instruction-set emulators might fail to
147 handle the new instruction encodings. This is known to affect Valgrind
148 versions up through 3.9 (but will be fixed in the forthcoming 3.10
149 release), and might affect other tools that do instruction emulation.
151 * Support for loadable gconv transliteration modules has been removed.
152 The support for transliteration modules has been non-functional for
153 over a decade, and the removal is prompted by security defects. The
154 normal gconv conversion modules are still supported. Transliteration
155 with //TRANSLIT is still possible, and the //IGNORE specifier
156 continues to be supported. (CVE-2014-5119)
158 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
159 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
160 resulting a denial-of-service security vulnerability in applications which
161 use functions related to iconv. (CVE-2014-6040)
165 * The following bugs are resolved with this release:
167 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
168 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
169 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
170 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
171 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
172 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
173 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
174 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
175 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
176 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
177 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
178 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
179 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
180 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
181 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
182 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
183 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
184 16431, 16453, 16474, 16506, 16510, 16529
186 * Slovenian translations for glibc messages have been contributed by the
187 Translation Project's Slovenian team of translators.
189 * The public headers no longer use __unused nor __block. This change is to
190 support compiling programs that are derived from BSD sources and use
191 __unused internally, and to support compiling with Clang's -fblock
192 extension which uses __block.
194 * CVE-2012-4412 The strcoll implementation caches indices and rules for
195 large collation sequences to optimize multiple passes. This cache
196 computation may overflow for large collation sequences and may cause a
197 stack or buffer overflow. This is now fixed to use a slower algorithm
198 which does not use a cache if there is an integer overflow.
200 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
201 rules for large collation sequences to optimize multiple passes and falls
202 back to alloca if malloc fails, resulting in a possible stack overflow.
203 The implementation now falls back to an uncached collation sequence lookup
206 * CVE-2013-4788 The pointer guard used for pointer mangling was not
207 initialized for static applications resulting in the security feature
208 being disabled. The pointer guard is now correctly initialized to a
209 random value for static applications. Existing static applications need
210 to be recompiled to take advantage of the fix (bug 15754).
212 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
213 to the d_name member of struct dirent, or omit the terminating NUL
214 character. (Bugzilla #14699).
216 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
217 aligned_alloc functions could allocate too few bytes or corrupt the
218 heap when passed very large allocation size values (Bugzilla #15855,
221 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
222 for AF_INET6 has been fixed (Bugzilla #16072).
224 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
225 pap_CW, quz_PE, the_NP.
227 * Substantially revised locales: gd_GB, ht_HT
229 * The LC_ADDRESS field was updated to support country_car for almost all
232 * ISO 1427 definitions were updated.
234 * ISO 3166 definitions were updated.
236 * The localedef utility now supports --big-endian and --little-endian
237 command-line options to generate locales for a different system from that
238 for which the C library was built.
240 * Binary locale files now only depend on the endianness of the system for
241 which they are generated and not on other properties of that system. As a
242 consequence, binary files generated with new localedef may be incompatible
243 with old versions of the GNU C Library, and binary files generated with
244 old localedef may be incompatible with this version of the GNU C Library,
245 in the following circumstances:
247 + Locale files may be incompatible on m68k systems.
249 + Locale archive files (but not separate files for individual locales) may
250 be incompatible on systems where plain "char" is signed.
252 * The configure option --disable-versioning has been removed. Builds with
253 --disable-versioning had not worked for several years.
255 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
256 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
258 * SystemTap probes for malloc have been introduced.
260 * SystemTap probes for slow multiple precision fallback paths of
261 transcendental functions have been introduced.
263 * Support for powerpc64le has been added.
265 * The soft-float powerpc port now supports e500 processors.
267 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
269 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
270 set of header declarations that are enabled by default, even when other
271 feature test macros or compiler options such as -std=c99 would otherwise
272 disable some of those declarations.
274 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
275 conflict with POSIX. The libbsd-compat library (which was a dummy library
276 that did nothing) has also been removed.
278 * Preliminary documentation about Multi-Thread, Async-Signal and
279 Async-Cancel Safety has been added.
281 * Change of ABI data structures for s390 and s390x:
282 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
283 allow for future hardware extensions. All library functions that accept or
284 return these structures were versioned in order to provide backwards
285 compatibility with existing code. However, not all cases can be handled
286 with interface versioning. If an application embeds either structure into
287 another structure and that structure is passed to another compilation unit
288 which expects the newer larger-sized object then any access to the new
289 fields will result in undefined behaviour. Similarly any access to fields
290 that were moved by the enlarging of the structures will cause undefined
291 behaviour. To fix the undefined behaviour all objects that are part of the
292 final in-memory image must agree on the size of structures, and this may
293 require recompilation.
297 * The following bugs are resolved with this release:
299 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
300 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
301 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
302 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
303 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
304 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
305 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
306 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
307 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
308 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
309 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
310 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
311 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
314 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
315 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
316 Distributions can re-enable building and using pt_chown via the new configure
317 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
318 considerable security risks and should only be used if the distribution
319 understands and accepts the risks.
321 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
324 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
325 fixed (Bugzilla #15330).
327 * Add support for calling C++11 thread_local object destructors on thread
328 and program exit. This needs compiler support for offloading C++11
329 destructor calls to glibc.
331 * Improved worst case performance of libm functions with double inputs and
334 * Support for priority inherited mutexes in pthread condition variables on
335 non-x86 architectures.
337 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
339 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
341 * Optimized string functions for ARM. Implemented by Will Newton and
344 * Optimized libm functions for SPARC. Implemented by David S. Miller.
346 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
349 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
350 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
352 * Added a benchmark framework to track performance of functions in glibc.
354 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
355 It is based on draft TS 18661 and currently enabled as a GNU extension.
357 * On Linux, the clock function now uses the clock_gettime system call
358 for improved precision, rather than old times system call.
360 * Added support for version-3 tz format files. This is needed when using
361 the tz database release 2013e or later, and affects a few unusual cases --
362 currently only TZ='America/Godthab' for time stamps after 2037.
364 * Added new API functions pthread_getattr_default_np and
365 pthread_setattr_default_np to get and set the default pthread
366 attributes of a process.
368 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
369 This may improve lock scaling of existing programs on TSX capable systems.
370 When the --enable-lock-elision=yes parameter is specified at configure
371 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
374 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
375 availability). Implemented by Ryan S. Arnold.
377 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
381 * The following bugs are resolved with this release:
383 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
384 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
385 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
386 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
387 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
388 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
389 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
390 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
391 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
392 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
393 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
394 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
395 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
396 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
397 14879, 14889, 14893, 14898, 14914.
399 * Optimization of memcpy for MIPS.
401 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
402 EMFILE has been fixed (Bugzilla #14889).
404 * The add-on ports collection is now distributed in the "ports" subdirectory
405 of the main GNU C Library distribution, rather than separately.
407 * Port to ARM AArch64 contributed by Linaro.
409 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
410 Optimized versions of memcpy, memset, and memcmp added for System z10 and
412 Implemented by Andreas Krebbel.
414 * The new function secure_getenv allows secure access to the environment,
415 returning NULL if running in a SUID/SGID process. This function replaces
416 the internal function __secure_getenv.
418 * SystemTap static probes have been added into the dynamic linker.
419 Implemented by Gary Benson.
421 * Optimizations of string functions strstr, strcasestr and memmem.
422 Implemented by Maxim Kuvyrkov.
424 * The minimum Linux kernel version that this version of the GNU C Library
425 can be used with is 2.6.16.
427 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
428 powerpc POWER7. Implemented by Will Schmidt.
430 * New configure option --disable-nscd builds the C library such that it
431 never attempts to contact the Name Service Caching Daemon (nscd).
432 New configure option --disable-build-nscd avoids building nscd itself;
433 this is the default if --disable-nscd is used.
435 * Improved support for cross-compilation, including cross-testing and
436 bootstrap builds without a previously built glibc.
438 * Several testsuite tests are now able to test multiple IFUNC variants of an
439 interface, rather than just testing the one that would be chooen by
442 * New configure options --with-bugurl and --with-pkgversion, for
443 distributors to use to embed their bug-reporting and package version
444 information in --help and --version output.
446 * The ttyname and ttyname_r functions on Linux now fall back to searching for
447 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
448 allows creation of chroots without the procfs mounted on /proc.
450 * The `crypt' function now fails if passed salt bytes that violate the
451 specification for those values. On Linux, the `crypt' function will
452 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
453 enabled, and fail on encrypted strings using the MD5 or DES algorithm
454 when the mode is enabled.
456 * The `clock_*' suite of functions (declared in <time.h>) is now available
457 directly in the main C library. Previously it was necessary to link with
458 -lrt to use these functions. This change has the effect that a
459 single-threaded program that uses a function such as `clock_gettime' (and
460 is not linked with -lrt) will no longer implicitly load the pthreads
461 library at runtime and so will not suffer the overheads associated with
462 multi-thread support in other code such as the C++ runtime library.
464 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
469 * The following bugs are resolved with this release:
471 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
472 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
473 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
474 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
475 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
476 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
477 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
478 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
479 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
480 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
481 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
482 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
483 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
484 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
485 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
486 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
487 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
488 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
489 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
490 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
491 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
492 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
495 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
496 configuring glibc with:
497 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
498 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
499 Implemented by H.J. Lu.
503 + define static_assert
505 + do not declare gets
507 + declare at_quick_exit and quick_exit also for ISO C11
509 + aligned_alloc. NB: The code is deliberately allows the size parameter
510 to not be a multiple of the alignment. This is a moronic requirement
511 in the standard but it is only a requirement on the caller, not the
516 + uchar.h support added
518 + CMPLX, CMPLXF, CMPLXL added
520 Implemented by Ulrich Drepper.
522 * Support for the IA-64 has been moved to ports.
524 * Remove support for anything but ELF binary format
526 * Checking versions of poll, ppoll added.
527 Implemented by Ulrich Drepper.
529 * More generic and 64-bit performance optimizations to math functions.
530 Implemented by Ulrich Drepper.
532 * New configure option --enable-obsolete-rpc makes the deprecated RPC
533 headers and functions available at compile time as they were before
534 version 2.14. This option will be removed at some time in the future
535 after the TI-RPC library becomes fully sufficient for the needs of
536 existing applications.
538 * Compatibility code for Linux kernel versions before 2.4 has been removed.
539 Note that glibc is not expected to work with any Linux kernel version
542 * New header <sys/auxv.h> and function getauxval allowing easy access to
543 the AT_* key-value pairs passed from the Linux kernel. The header also
544 defines the HWCAP_* bits associated with the AT_HWCAP key.
546 * New locales: mag_IN
548 * New configure option --enable-systemtap builds SystemTap static probes
549 into libc for setjmp and longjmp and into libpthread for various operations.
550 So far the setjmp/longjmp probes and some of the libpthread probes are
551 provided only for i*86 and x86_64.
552 Implemented by Roland McGrath and Rayson Ho.
554 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
556 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
559 * More optimized functions for SPARC. Implemented by David S. Miller.
561 * Improved support for cross-compilation, especially bootstrap builds
562 without a previously built glibc.
564 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
565 Chris Metcalf from Tilera.
567 * Support for the old ARM ABI has been removed from ports. Only the EABI is
568 now supported for ARM processors.
570 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
571 as the name of the dynamic linker, to distinguish it from the
572 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
574 * Support for CRIS has been removed from ports.
576 * A new class of installed header has been documented for low-level
577 platform-specific functionality. PowerPC added the first instance with a
578 function to provide time base register access. Contributed by Tulio
579 Magno Quites Machado Filho.
581 * ix86 configurations now install header files that are consistent with
582 what x86-64 configurations install. These same header files can be used
583 for -m32, -m64, or -mx32 builds.
584 Contributed by H.J. Lu.
586 * Math library bug fixes. A thorough audit of all open math library bugs was
587 conducted by Joseph Myers. Significant progress was made on many math
588 library bugs resulting in more accurate exceptions and function results.
589 Many thanks to all those that contributed including Andreas Jaeger for his
590 patch review and work on the x87 trigonometric instruction issues.
592 * Timezone data is no longer installed. Timezone-related binaries and scripts
593 will continue to be installed. Users should obtain their timezone data from
594 their distribution provider or from the tzdata package at
595 <ftp://munnari.oz.au/pub/>.
599 * The following bugs are resolved with this release:
601 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
602 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
603 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
604 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
605 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
606 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
607 13484, 13506, 13515, 13523, 13524, 13538, 13540
609 * New program pldd to list loaded object of a process
610 Implemented by Ulrich Drepper.
612 * Add nss_db support back to glibc. No more dependency on Berkeley db
613 and support for initgroups lookups.
614 Implemented by Ulrich Drepper.
616 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
617 Contributed by HJ Lu.
619 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
620 Contributed by HJ Lu.
622 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
623 on x86-32 and x86-64.
624 Contributed by Liubov Dmitrieva.
626 * Optimized strchr and strrchr for SSE on x86-32.
627 Contributed by Liubov Dmitrieva.
629 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
630 for x86-64 and x86-32.
631 Contributed by Liubov Dmitrieva.
633 * New interfaces: scandirat, scandirat64
634 Implemented by Ulrich Drepper.
636 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
637 Implemented by Ulrich Drepper.
639 * nscd now also caches the netgroup database.
640 Implemented by Ulrich Drepper.
642 * Integrate libm with gcc's -ffinite-math-only option.
643 Implemented by Ulrich Drepper.
645 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
646 to math functions. Implemented by Ulrich Drepper.
648 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
649 Implemented by Ulrich Drepper.
651 * New Linux interfaces: process_vm_readv, process_vm_writev
653 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
654 Implemented by Ulrich Drepper.
656 * Optimized nearbyint and strcasecmp for PPC.
657 Implemented by Adhemerval Zanella.
659 * New locales: bho_IN, unm_US, es_CU, ta_LK
663 * The following bugs are resolved with this release:
665 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
666 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
667 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
668 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
669 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
670 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
671 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
672 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
673 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
674 12795, 12811, 12813, 12814, 12841
676 * The RPC implementation in libc is obsoleted. Old programs keep working
677 but new programs cannot be linked with the routines in libc anymore.
678 Programs in need of RPC functionality must be linked against TI-RPC.
679 The TI-RPC implementation is IPv6 enabled and there are other benefits.
681 Visible changes of this change include (obviously) the inability to link
682 programs using RPC functions without referencing the TI-RPC library and the
683 removal of the RPC headers from the glibc headers.
684 Implemented by Ulrich Drepper.
686 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
687 syncfs, setns, sendmmsg
689 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
690 yue_HK, lij_IT, mhr_RU
692 * New encodings: CP770, CP771, CP772, CP773, CP774
694 * New program sotruss to trace calls through PLTs
695 Implemented by Ulrich Drepper.
697 * The malloc hook implementation is marked deprecated and will be removed
698 from the default implementation in the next version. The design never
699 worked ever since the introduction of threads. Even programs which do
700 not create threads themselves can use multiple threads created internally.
704 * The following bugs are resolved with this release:
706 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
707 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
708 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
709 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
712 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
714 * POWER7 optimizations: memset, memcmp, strncmp
716 * New optimized string functions for x86-64: strnlen (SSE2),
717 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
718 Implemented by Ulrich Drepper.
722 * The following bugs are resolved with this release:
724 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
725 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
726 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
727 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
728 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
729 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
730 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
731 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
733 * New interfaces: pthread_getname_np, pthread_setname_np
735 * New Linux interface: recvmmsg
737 * STT_GNU_IFUNC implemented for Sparc by David Miller.
739 * The dynamic linker now recognizes supported ABI versions from the
740 EI_ABIVERSION field in the ELF header.
741 Implemented by Ulrich Drepper.
743 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
744 will not be used to fill in password fields in the passwd.byname replies.
745 Instead it is used to synthesize the shadow.byname table, should it be
746 missing. This is a useful mode in some installations involving Solaris.
747 Implemented by Ulrich Drepper.
749 * New locales: kok_IN, sq_MK, cv_RU
753 * The following bugs are resolved with this release:
755 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
756 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
757 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
758 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
759 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
760 10789, 10817, 10823, 10840, 10847
762 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
764 Implemented by Ulrich Drepper.
766 * Checking version of longjmp added that fails if an uninitialized stack
767 frame would be created. Implemented by Ulrich Drepper.
769 * STT_GNU_IFUNC is now supported in static executables.
770 Implemented by H.J. Lu.
772 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
774 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
775 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
776 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
777 Contributed by H.J. Lu.
779 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
780 Implemented by Ulrich Drepper.
782 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
784 Contributed by H.J. Lu.
786 * Support for fma instruction in AVX on x86-64.
787 Implemented by H.J. Lu and Ulrich Drepper.
789 * AVX support in x86-64 auditing support in ld.so.
790 Implemented by H.J. Lu.
792 * STB_GNU_UNIQUE support added.
793 Implemented by Ulrich Drepper.
795 * Implement second fallback mode for optimized DNS lookup for even more
796 broken environments. If two requests from the same port are not
797 handled correctly close the socket and open a new one before sending
798 the second request. The 'single-request-reopen' option in /etc/resolv.conf
799 can be used to select this mode right away, instead of rediscovering the
800 necessity is every process again.
801 Implemented by Ulrich Drepper.
803 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
804 Implemented by Adam Tkac.
806 * Optimized iconv conversions for S390x.
807 Implemented by Andreas Krebbel.
809 * Using condvars with PI mutexes is now more efficient due to kernel
810 support for requeueing to PI futexes. NPTL support added for x86-64.
811 Implemented by Ulrich Drepper.
813 * New locales: ps_AF, my_MM
817 * The following bugs are resolved with this release:
819 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
820 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
821 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
822 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
823 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
825 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
826 Implemented by Ulrich Drepper.
828 * New Linux interfaces: accept4, fallocate, fallocate64.
829 Implemented by Ulrich Drepper.
831 * Correct declarations of string function when used in C++ code. This
832 could lead to compile errors for invalid C++ code.
834 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
837 * New POSIX 2008 interface: psiginfo
838 Implemented by Ulrich Drepper.
840 * New ISO C++1x interfaces: quick_exit, at_quick_exit
841 Implemented by Ulrich Drepper.
843 * Support for selecting between multiple function definitions at runtime
844 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
846 * The libcrypt library can now use the hash function implementations in
847 NSS. Implemented by Ulrich Drepper.
849 * The malloc implementation can be compiled to be less memory efficient
850 but higher performing in multi-threaded programs.
851 Implemented by Ulrich Drepper.
853 * New locales: nan_TW@latin, ks_IN
855 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
856 Implemented by Ulrich Drepper.
858 * Extended printf hook support. It is possible to use user-defined types
859 and extend existing format specifiers.
860 Implemented by Ulrich Drepper.
862 * Handling for group shadow files has been added.
863 Implemented by Ulrich Drepper.
865 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
866 servers (the case, e.g., for some people using the built-in DNS
867 server in ADSL modems/routers). There is a once-per-process timeout
868 in case of a broken server. To avoid it, users can run nscd or put
869 'options single-request' in /etc/resolv.conf.
870 Implemented by Ulrich Drepper.
874 * The following bugs are resolved with this release:
876 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
877 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
878 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
879 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
880 6968, 6974, 6980, 6995, 7008, 7009, 7029
882 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
883 up at the same time. Implemented by Ulrich Drepper.
885 * TLS descriptors for LD and GD on x86 and x86-64.
886 Implemented by Alexandre Oliva.
888 * getaddrinfo now handles DCCP and UDPlite.
889 Implemented by Ulrich Drepper.
891 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
892 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
893 Implemented by Ulrich Drepper.
895 * New implementation of memmem, strstr, and strcasestr which is O(n).
896 Implemented by Eric Blake.
898 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
900 * Implement "e" option for popen to open file descriptor with the
901 close-on-exec flag set. Implemented by Ulrich Drepper.
903 * Implement "b" mode for fmemopen. In this mode writes writes don't
904 implicitly add a NUL byte and seeks from the end of the buffer really
905 use the buffer end, not the string length as the basis.
906 Implemented by Ulrich Drepper.
908 * Many functions, exported and internal, now atomically set the close-on-exec
909 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
911 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
913 Implemented by Pravin Satpute.
915 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
919 * The following bugs are resolved with this release:
921 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
922 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
923 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
924 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
925 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
926 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
927 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
929 * New locales: bo_CN, bo_IN, shs_CA.
931 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
933 * Sorting rules for some Indian languages (Devanagari and Gujarati).
934 Implemented by Pravin Satpute.
936 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
938 * nscd caches now all timeouts for DNS entries
939 Implemented by Ulrich Drepper.
941 * nscd is more efficient and wakes up less often.
942 Implemented by Ulrich Drepper.
944 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
945 vdprintf, and obstack_vprintf.
946 Implemented by Jakub Jelinek.
948 * Faster memset for x86-64.
949 Implemented by Harsha Jagasia and H.J. Lu.
951 * Faster memcpy on x86.
952 Implemented by Ulrich Drepper.
954 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
955 Implemented by Ulrich Drepper.
957 * Faster sqrt and sqrtf implemention for some PPC variants.
958 Implemented by Steven Munroe.
962 * The following bugs are resolved with this release:
964 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
965 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
966 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
967 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
968 5071, 5103, 5104, 5112, 5113, 5184, 5186
970 * More checking functions: fread, fread_unlocked, open*, mq_open.
971 Implemented by Jakub Jelinek and Ulrich Drepper.
973 * Extend fortification to C++. Implemented by Jakub Jelinek.
975 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
976 by not recognizing 'a' as a modifier when those specs are requested.
977 Implemented by Jakub Jelinek.
979 * PPC optimizations to math and string functions.
980 Implemented by Steven Munroe.
982 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
983 options to be passed. Implemented by Ulrich Drepper.
985 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
987 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
988 Implemented by Ulrich Drepper.
990 * Handle private futexes in the NPTL implementation.
991 Implemented by Jakub Jelinek and Ulrich Drepper.
993 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
994 Implemented by Roland McGrath and Ulrich Drepper.
996 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
998 * SHA-256 and SHA-512 based password encryption.
999 Implemented by Ulrich Drepper.
1001 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
1002 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
1005 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
1006 Implemented by Ulrich Drepper.
1010 * The following bugs are resolved with this release:
1012 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1013 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1014 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1015 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1016 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1017 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1018 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1021 * New Linux interfaces: epoll_pwait, sched_getcpu.
1023 * New generic interfaces: strerror_l.
1025 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1029 * The following bugs are resolved with this release:
1031 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1032 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1033 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1034 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1035 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1036 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1037 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1038 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1039 3225, 3251, 3252, 3253, 3273
1041 * For Linux, the sorting of addresses returned by getaddrinfo now also
1042 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1043 Implemented by Ulrich Drepper.
1045 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1046 Implemented by Ulrich Drepper.
1048 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1050 * New iconv module for MIK. Contributed by Alexander Shopov.
1052 * For sites with broken group and/or passwd database, the auto-propagate
1053 option of nscd can prevent creating ID lookup entries from the results
1054 of a name lookup and vice versa. This usually is no problem but some
1055 site might have problems with the default behavior.
1056 Implemented by Ulrich Drepper.
1058 * Iterating over entire database in NIS can be slow. With the
1059 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1060 to trade time for memory. The entire database will be read at once.
1061 Implemented by Ulrich Drepper.
1063 * The interfaces introduced in RFC 3542 have been implemented by
1066 * Support for the new ELF hash table format was added by Ulrich Drepper.
1068 * Support for priority inheritance mutexes added by Jakub Jelinek and
1071 * Support for priority protected mutexes added by Jakub Jelinek.
1073 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1074 or_IN, csb_PL, fy_NL, sr_ME.
1078 * More overflow detection functions.
1080 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1081 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1083 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1084 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1085 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1086 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1087 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1088 by Masahide Washizawa.
1090 * It is now possible to install audit libraries for the dynamic linker using
1091 LD_AUDIT. Implemented by Ulrich Drepper.
1093 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1094 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1095 For a libc and libpthread that works well on Linux 2.4 kernels, we
1096 recommend using the stable 2.3 branch.
1098 * The new function open_wmemstream acts like open_memstream,
1099 but uses a wchar_t wide character buffer.
1101 * The new function ppoll is an improved version of poll, similar to pselect.
1103 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1104 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1105 renameat, unlinkat, linkat, symlinkat, readlinkat.
1107 * New Linux kernel system calls: unshare,
1108 inotify_init, inotify_add_watch, inotify_rm_watch.
1110 * The euidaccess function is now also known by the alias eaccess,
1111 for compatibility with some other systems.
1113 * Timezone data updated to 2006b version.
1117 * The following bugs are resolved with this release:
1119 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1120 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1121 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1122 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1123 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1124 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1126 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1128 * As of this release, GCC 4 can be used to compile the C Library.
1130 * Timezone data updated to 2005m version.
1134 * The following bugs are resolved with this release:
1136 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1137 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1138 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1139 777, 787, 821, 822, 823, 825
1141 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1145 * Support for RFC 3678. Real implementations exist only for Linux so far.
1146 Implemented by Ulrich Drepper.
1148 * nscd can now cache entries persistently. Expiring entries are reloaded.
1149 For speedups the cache can be shared in memory with client processes.
1150 Implemented by Ulrich Drepper.
1152 * nscd can now perform SELinux checks.
1153 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1155 * getaddrinfo queries are now cached. Canonical name lookup is performed
1157 Implemented by Ulrich Drepper.
1159 * The nothrow function attribute is used when headers are used by gcc when
1160 compiling C code. This can avoid significant amounts of exception
1163 * The malloc functions perform more error checking and are stricter when
1164 it comes to reacting on errors. The default action is to terminate
1165 the process after showing an error message. Implemented by Ulrich Drepper.
1167 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1168 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1170 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1171 namespaces using the new function dlmopen(). This feature is of course,
1172 like most other dynamic loading functionality, not available in statically
1173 linked applications. Implemented by Ulrich Drepper.
1175 * Low-overhead boundary checking variants of string and some stdio functions
1176 were added. These are to be used in conjunction with a gcc patch by
1177 Jakub Jelinek which adds calls to these functions if possible.
1178 Implemented by Jakub Jelinek and Ulrich Drepper.
1180 * Old code for several operating systems and machine architectures that
1181 have not been in working condition in a long time have been removed from
1182 the main source tree maintained by the GNU C Library's maintainers.
1183 These files are now reside in the separate `ports' source module
1184 that is usable as an add-on when building the library.
1188 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1189 interrogate the dynamic linker, compatible with the Solaris interface.
1191 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1192 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1194 * getifaddrs now uses the netlink interface on Linux to get its information.
1195 Implemented by Thorsten Kukuk.
1197 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1198 Implemented by Ulrich Drepper.
1200 * support for non-executable stacks on x86 has been added. Changes mostly
1203 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1206 * getaddrinfo now performs destination address selection according to
1211 * Thread-safe interfaces for many functions that access locale data
1212 were added in version 2.3, but these features were omitted from NEWS.
1213 Many functions have variants with an `_l' suffix that take a `locale_t'
1214 object as a parameter rather than consulting the current locale.
1215 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1216 create and maintain `locale_t' objects. Additionally, the new function
1217 `uselocale' sets "the current locale" (as used by functions not so
1218 parameterized) set for an individual thread. These features were added
1219 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1221 * The functions getresuid, getresgid, setresuid, and setresgid, which
1222 have long been available on Linux, are now declared in <unistd.h>
1223 and are now also available on the Hurd.
1225 * ELF thread-local storage support (TLS) now works on x86-64.
1227 * The new dynamic string token $LIB is expanded in shared library names.
1228 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1230 * Aldy Hernandez contributed complete software floating point support for
1231 PowerPC machines with no FPU.
1233 * fexecve is implemented on Linux.
1235 * The `btowc' function should work at least twice as fast due to
1236 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1238 * With approriate thread add-ons cancelable functions are now implemented
1239 in libc.so as well. No need to call the function in libpthread. This
1240 change allowed to finally disable the incorrect and expensive handling
1241 of weak definition in ld.so.
1243 * Yet more PLT entries in libc.so have been removed. We finally arrived
1244 at the bare minimum. Startup times improved appropriately.
1246 * Support for the new Linux/x86 system call interface was added. The
1247 AT_SYSINFO auxiliary vector entry is recognized and handled.
1251 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1254 * iconv (the program and the interface) now accepts empty names (excluding
1255 options like //TRANSLIT) to mean "use charset of current locale".
1257 * localedef can now transliterate characters in strings which are not in
1258 the provided charmap. The information from the input locale is used.
1260 * Prelinking support was added for ELF targets. This requires additional
1261 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1263 * Read-only stdio streams now use mmap to speed up operation by eliminating
1264 copying and buffer underflows. To use add 'm' to the mode string of
1265 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1267 * The malloc functions were completely rewritten by Wolfram Gloger based
1268 on Doug Lea's malloc-2.7.0.c.
1270 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1271 implementation of regex.
1273 * Bruno Haible upgraded the iconv and locale implementation to support
1276 * Contents of the LC_* and LANG environment variables in the CEN style are
1277 not recognized anymore. It never was used. Change by Ulrich Drepper.
1279 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1280 thread-local storage (TLS) ABI on some platforms.
1281 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1283 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1284 EUC-JISX0213, and TSCII.
1286 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1287 BSD-compatible interface for getting all network interface addresses.
1288 Implementation for IPv4 by Roland McGrath.
1290 * Loading of locale data is faster due to the introduction of a locale
1291 archive. Implemented by Roland McGrath and Ulrich Drepper.
1293 * Startup times are significantly reduced by not using exported functions
1294 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1297 * Steven Munroe contributed a port to PowerPC64/Linux.
1301 * The Hurd now uses the GNU libio implementation of stdio rather than the
1302 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1304 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1305 with the same behavior as the Linux system call of the same name.
1309 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1310 128-bit long double format.
1312 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1313 IBM1161, and IBM1162 charsets.
1315 * Andreas Jaeger contributed a port to x86-64/Linux.
1317 * Peter Bruin contributed a port to PowerPC/Hurd.
1319 * libc functions using I/O streams now can handle wide-oriented streams
1322 * optimizations in the dynamic linker. Binaries created by recent binutils
1323 versions start up quicker due to reduced time spent on relocations.
1325 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1329 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1330 asinh, atanh, j0 for the 128-bit long double format.
1332 * Bruno Haible updated all the code handling Unicode in some form to
1333 support Unicode 3.1.
1335 * Speed of regex for single-byte locales is back to previous levels.
1336 Patch by Isamu Hasegawa.
1338 * Alpha, SPARC, and IA-64 now also using floating stacks.
1340 * Startup time of internationalized applications greatly improved through
1341 iconv cache. Use iconvconfig to generate the cache file.
1342 Contributed by Ulrich Drepper.
1344 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1345 severe performance problems. Patch by David Mosberger.
1347 * The Hurd port got a lot more functionality like AIO, various stdio
1348 extensions, etc. Mainly done by Roland McGrath.
1350 * mtrace can now lookup symbols in shared libraries.
1354 * Intel's IA-64 math library is largely integrated. It provides fast and
1355 accurate implementatations for most basic and standard math functions
1356 in float, double, and long double format.
1358 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1359 and asin for the 96-bit long double format and asin, log, tan for the
1360 128-bit long double format.
1362 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1363 The basic double functions exist today. Contributed by Abraham Ziv
1364 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1365 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1367 * An asynchronous name lookup library was added. The interface is designed
1368 after POSIX AIO. The proposal was circulated beforehand to get comments.
1369 No negative ones came in. Implemented by Ulrich Drepper.
1371 * Port to S390/64bit contributed by Martin Schwidefsky
1372 <schwidefsky@de.ibm.com>.
1374 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1375 of functions for Linux/IA-64.
1377 * The RPC code is now thread safe. Threads can now use the same service
1378 of different services at the same time. Patch by Eric Norum
1379 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1381 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1382 family of functions for Linux/S390.
1384 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1385 of functions for Linux/x86.
1387 * Port to Linux/CRIS contributed by Axis Communications.
1391 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1392 we can now check for namespace violations and missing declarations. The
1393 result is that almost all headers are now Unix-compliant (as defined in
1394 the upcoming XPG6). The negative side is that some programs might need
1395 corrections, too, if they depend on the incorrect form of the headers in
1396 previous versions which defined too many symbols and included too many
1399 * regex now handles multibyte character sets correctly.
1400 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1402 * iconv (the program) does now conform to the upcoming XPG6 and handles
1403 charmaps. Instead of the charset names the path of charmaps can be
1404 provided and the conversion happens based on this data.
1405 Contributed by Ulrich Drepper.
1407 * The locale program now provides detailed information about the installed
1412 only lists the names of the supported locales
1416 provides details such as country, language, and codeset name.
1417 Contributed by Ulrich Drepper.
1421 * The gencat program now parses the input file according to the charset
1422 selected by the LC_CTYPE category. This is important for stateful
1423 character sets. To make generating catalogs easier there is a way
1424 to overwrite the charset selected by the locale: before the first
1425 message or $ quote line the catalog can contain a line like
1427 $ codeset=ISO-8859-2
1429 to select the charset (ISO-8859-2 in this case).
1431 Implemented by Shinya Hanataka and Ulrich Drepper.
1433 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1434 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1435 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1437 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1438 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1440 * The LANGUAGE environment variable is now ignored unless the locale is
1441 changed from the default "C" locale.
1443 * The usual bug fixes.
1447 * Greg McGary added runtime support for bounds checking using gcc's
1448 new -fbounded-pointers option. ix86 target is complete. PowerPC
1451 * Thorsten Kukuk added secure mode support to nscd.
1453 * The Berkeley db libraries have been removed.
1455 Related, the nss_db module is now in a separate package since it
1456 obviously requires a database library being available.
1458 * Wide character I/O streams implemented by Ulrich Drepper.
1460 * Functions from the extended socket API added by Ulrich Drepper.
1462 * Functions feenableexcept and fedisableexcept to control the
1463 behaviour of individual exceptions have been added by Andreas Jaeger.
1465 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1467 * The resolver code has been updated from bind 8.2.3-T5B which supports
1468 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1471 This change could in some situations effect backward compatibility. Since
1472 now `_res' is a thread-local instead of a global variable, modifying it
1473 in one thread does not have any effect in other threads.
1475 The resolver library was also extended to allow IPv6 as the transport
1476 protocol for the requests. This work was done by Stig Venaas.
1478 * Compatibility code for K&R C compilers has been removed from the
1479 header files. A ISO C compiler is needed to use the library
1480 (conforming to either C89 or C99 standard).
1482 * Complete rewrite of the localedef program to support multibyte character
1483 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1484 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1485 Implemented by Ulrich Drepper.
1487 Bruno Haible significantly improved the generation and use of the data
1488 structures for the wide character tables.
1490 * Plural handling in gettext implemented by Ulrich Drepper.
1492 * The utmp daemon has been removed.
1494 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1496 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1499 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1501 * POSIX barriers implemented by Kaz Kylheku.
1503 * POSIX spawn function family implemented by Ulrich Drepper.
1505 * POSIX spinlocks are now available.
1507 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1509 * the configure option --enable-kernel=X.Y.Z allows to strip out
1510 compatibility for kernel versions before X.Y.Z. This is currently only
1511 implemented for Linux.
1513 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1514 field sin6_scope_id. This means that all programs using IPv6 should be
1515 recompiled. Don't expect binary compatibility with previous glibc
1518 * various conversion modules for IBM character sets contributed by
1521 * IA-64 port by Jes Sorensen and HJ Lu.
1535 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1537 * New xdr functions are added; some rpc functions are now 64bit clean.
1539 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1541 * Fixed known incompatibilities with glibc 2.0.
1543 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1545 * Optimized a number of functions (especially the ELF dynamic loader).
1547 * Update timezone data files.
1549 * lots of charmaps corrections
1551 * some new locale definitions and charmaps
1556 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1557 conform to POSIX member type requirements. Symbol versions have been
1558 adjusted as needed within the library, and for direct use by applications,
1559 but there is potential for problems if third-party libraries use
1560 struct timeval as part of their interface. This does not present
1561 a problem for X and other "essential" system libraries.
1563 * An additional locale model to support C++ Standard Library locale
1564 model and probably more was implemented by Ulrich Drepper.
1566 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1569 * Miles Bader provided the `argp' function family to support hierachical
1570 command line argument parsing, layered on top of getopt.
1572 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1574 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1577 * scanf recognizes the %a and %A format for scanning floating point numbers.
1579 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1580 information and interfaces for the available integer types.
1582 * about 130 new math functions were added to implement the ISO C9x math
1585 * the new header <complex.h> contains definitions of the complex math
1586 functions from ISO C 9X.
1588 * the new header <tgmath.h> defines generic macros to use complex or
1589 real valued functions.
1591 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1593 * Andreas Jaeger provided a test suite for the math library.
1595 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1597 * Ulrich Drepper added character set conversion functions (iconv).
1599 * Optimized string functions have been added.
1601 * The localedata addon is now part of glibc.
1603 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1605 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1606 daemon for NSS (nscd).
1608 Missing a better place here are some numbers on improvements. Under
1609 Linux 2.1.125 un-tar-ing the kernel sources takes
1613 using local files 12.19s 6.88s 22.91s
1615 using NIS 13.92s 8.91s 26.34s
1617 using NIS & nscd 10.37s 7.34s 25.30s
1619 using NIS+ 27.57s 30.37s 640.46s
1621 using NIS+ & nscd 10.25s 7.83s 26.51s
1623 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1625 Keep in mind that non-namelookup related operations dominate above times.
1626 It was just a common complain that using NIS+ unpacking the kernel is
1629 [1] The old nscd implementation is not available anymore since it was
1630 distributed with glibc up to version 2.0.98 and thus is now replaced.
1632 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1634 * Mark Kettenis provided a Hesiod NSS module.
1636 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1637 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1639 * rcmd can now handle netgroups (Dick Streefland).
1641 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1644 * Support for the IPv6 protocol has been added to the socket API, as per the
1645 latest draft standards.
1647 * Support for Linux 2.2 has been added.
1649 * Interface changes relative to the latest 2.0.x release:
1650 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1651 addseverity NEW: Unix98
1652 alphasort64 NEW: LFS
1653 argp_err_exit_status NEW: argp, GNU ext
1654 argp_error NEW: argp, GNU ext
1655 argp_failure NEW: argp, GNU ext
1656 argp_help NEW: argp, GNU ext
1657 argp_parse NEW: argp, GNU ext
1658 argp_program_bug_address NEW: argp, GNU ext
1659 argp_program_version NEW: argp, GNU ext
1660 argp_program_version_hook NEW: argp, GNU ext
1661 argp_state_help NEW: argp, GNU ext
1662 argp_usage NEW: argp, GNU ext
1663 authdes_create NEW: Secure RPC
1664 authdes_getucred NEW: Secure RPC
1665 authdes_pk_create NEW: Secure RPC
1666 backtrace NEW: GNU ext.
1667 backtrace_symbols NEW: GNU ext.
1668 backtrace_symbols_fd NEW: GNU ext.
1670 cacosf NEW: ISO C 9x
1671 cacosh NEW: ISO C 9x
1672 cacoshf NEW: ISO C 9x
1673 cacoshl NEW: ISO C 9x
1674 cacosl NEW: ISO C 9x
1681 casinf NEW: ISO C 9x
1682 casinh NEW: ISO C 9x
1683 casinhf NEW: ISO C 9x
1684 casinhl NEW: ISO C 9x
1685 casinl NEW: ISO C 9x
1687 catanf NEW: ISO C 9x
1688 catanh NEW: ISO C 9x
1689 catanhf NEW: ISO C 9x
1690 catanhl NEW: ISO C 9x
1691 catanl NEW: ISO C 9x
1692 cbc_crypt NEW: Secure RPC
1696 ccoshf NEW: ISO C 9x
1697 ccoshl NEW: ISO C 9x
1703 cimagf NEW: ISO C 9x
1704 cimagl NEW: ISO C 9x
1705 clearerr_locked REMOVED
1706 clntunix_create NEW: sunrpc ext
1708 clog10 NEW: ISO C 9x
1709 clog10f NEW: ISO C 9x
1710 clog10l NEW: ISO C 9x
1720 cprojf NEW: ISO C 9x
1721 cprojl NEW: ISO C 9x
1723 crealf NEW: ISO C 9x
1724 creall NEW: ISO C 9x
1729 csinhf NEW: ISO C 9x
1730 csinhl NEW: ISO C 9x
1733 csqrtf NEW: ISO C 9x
1734 csqrtl NEW: ISO C 9x
1738 ctanhf NEW: ISO C 9x
1739 ctanhl NEW: ISO C 9x
1741 des_setparity NEW: Secure RPC
1742 ecb_crypt NEW: Secure RPC
1743 endutxent NEW: Unix98
1745 exp10f NEW: ISO C 9x
1746 exp10l NEW: ISO C 9x
1750 fattach NEW: STREAMS
1751 fdetach NEW: STREAMS
1755 feclearexcept NEW: ISO C 9x
1756 fegetenv NEW: ISO C 9x
1757 fegetexceptflag NEW: ISO C 9x
1758 fegetround NEW: ISO C 9x
1759 feholdexcept NEW: ISO C 9x
1761 feraiseexcept NEW: ISO C 9x
1762 ferror_locked REMOVED
1763 fesetenv NEW: ISO C 9x
1764 fesetexceptflag NEW: ISO C 9x
1765 fesetround NEW: ISO C 9x
1766 fetestexcept NEW: ISO C 9x
1767 feupdateenv NEW: ISO C 9x
1768 fflush_locked REMOVED
1772 fgets_unlocked NEW: GNU ext.
1773 fileno_locked REMOVED
1785 fputc_locked REMOVED
1786 fputs_unlocked NEW: GNU ext.
1787 fread_unlocked NEW: GNU ext.
1792 fstatvfs NEW: Unix98
1796 ftruncate64 NEW: LFS
1798 fwrite_unlocked NEW: GNU ext.
1799 gai_strerror NEW: IPv6
1803 getchar_locked REMOVED
1805 getdate_err NEW: Unix98
1806 getdate_r NEW: GNU ext.
1808 getnameinfo NEW: IPv6
1809 getnetname NEW: Secure RPC
1810 getpmsg NEW: STREAMS
1811 getpt NEW: Unix98 PTY
1812 getrlimit64 NEW: LFS
1813 getutxent NEW: Unix98
1814 getutxid NEW: Unix98
1815 getutxline NEW: Unix98
1816 glob64 NEW: GNU ext.
1817 globfree64 NEW: GNU ext.
1818 gnu_get_libc_release NEW: GNU ext.
1819 gnu_get_libc_version NEW: GNU ext.
1820 grantpt NEW: Unix98 PTY
1821 host2netname NEW: Secure RPC
1823 iconv_close NEW: iconv
1824 iconv_open NEW: iconv
1825 if_freenameindex NEW: IPv6
1826 if_indextoname NEW: IPv6
1827 if_nameindex NEW: IPv6
1828 if_nametoindex NEW: IPv6
1829 in6addr_any NEW: IPv6
1830 in6addr_loopback NEW: IPv6
1831 inet6_isipv4mapped NEW: IPv6
1832 isastream NEW: STREAMS
1833 iswblank NEW: GNU ext.
1834 key_decryptsession NEW: Secure RPC
1835 key_decryptsession_pk NEW: Secure RPC
1836 key_encryptsession NEW: Secure RPC
1837 key_encryptsession_pk NEW: Secure RPC
1838 key_gendes NEW: Secure RPC
1839 key_get_conv NEW: Secure RPC
1840 key_secretkey_is_set NEW: Secure RPC
1841 key_setnet NEW: Secure RPC
1842 key_setsecret NEW: Secure RPC
1843 llrint NEW: ISO C 9x
1844 llrintf NEW: ISO C 9x
1845 llrintl NEW: ISO C 9x
1846 llround NEW: ISO C 9x
1847 llroundf NEW: ISO C 9x
1848 llroundl NEW: ISO C 9x
1853 lrintf NEW: ISO C 9x
1854 lrintl NEW: ISO C 9x
1855 lround NEW: ISO C 9x
1856 lroundf NEW: ISO C 9x
1857 lroundl NEW: ISO C 9x
1859 makecontext NEW: Unix98
1860 mempcpy NEW: GNU ext.
1863 modify_ldt NEW: kernel
1867 nearbyint NEW: ISO C 9x
1868 nearbyintf NEW: ISO C 9x
1869 nearbyintl NEW: ISO C 9x
1870 netname2host NEW: Secure RPC
1871 netname2user NEW: Secure RPC
1872 nexttoward NEW: ISO C 9x
1873 nexttowardf NEW: ISO C 9x
1874 nexttowardl NEW: ISO C 9x
1878 passwd2des NEW: Secure RPC
1880 pow10f NEW: GNU ext.
1881 pow10l NEW: GNU ext.
1884 printf_size NEW: GNU ext.
1885 printf_size_info NEW: GNU ext.
1886 profil_counter REMOVED
1887 pthread_mutexattr_getkind_np REPLACED
1888 pthread_mutexattr_setkind_np REPLACED
1889 ptsname NEW: Unix98 PTY
1890 ptsname_r NEW: Unix98 PTY
1892 putchar_locked REMOVED
1893 putgrent NEW: GNU ext.
1895 putpmsg NEW: STREAMS
1896 pututxline NEW: Unix98
1900 readdir64_r NEW: LFS
1901 remquo NEW: ISO C 9x
1902 remquof NEW: ISO C 9x
1903 remquol NEW: ISO C 9x
1905 roundf NEW: ISO C 9x
1906 roundl NEW: ISO C 9x
1908 scalbln NEW: ISO C 9x
1909 scalblnf NEW: ISO C 9x
1910 scalblnl NEW: ISO C 9x
1912 sendfile NEW: kernel
1913 setcontext NEW: Unix98
1914 setrlimit64 NEW: LFS
1915 setutxent NEW: Unix98
1917 sigignore NEW: Unix98
1918 sigqueue NEW: POSIX.1b
1919 sigrelse NEW: Unix98
1920 sigset NEW: POSIX.1b
1921 sigtimedwait NEW: POSIX.1b
1922 sigwaitinfo NEW: POSIX.1b
1923 sincos NEW: GNU ext.
1924 sincosf NEW: GNU ext.
1925 sincosl NEW: GNU ext.
1929 strcasestr NEW: GNU ext.
1930 strtoimax NEW: ISO C 9x
1931 strtoumax NEW: ISO C 9x
1932 strverscmp NEW: GNU ext.
1933 svcauthdes_stats NEW: Secure RPC
1934 svcunix_create NEW: sunrpc etx
1935 svcunixfd_create NEW: sunrpc ext
1936 swapcontext NEW: Unix98
1937 tcgetsid NEW: Unix98 PTY
1938 tdestroy NEW: GNU ext.
1939 tgamma NEW: ISO C 9x
1940 tgammaf NEW: ISO C 9x
1941 tgammal NEW: ISO C 9x
1945 truncf NEW: ISO C 9x
1946 truncl NEW: ISO C 9x
1948 unlockpt NEW: Unix98 PTY
1949 updwtmpx NEW: Unix98
1950 user2netname NEW: Secure RPC
1951 utmpxname NEW: Unix98
1952 versionsort NEW: GNU ext.
1953 versionsort64 NEW: GNU ext.
1955 wcscasecmp NEW: GNU ext.
1956 wcsncasecmp NEW: GNU ext.
1957 wcsnlen NEW: GNU ext.
1958 wcstoimax NEW: ISO C 9x
1959 wcstoll NEW: ISO C 9x
1960 wcstoull NEW: ISO C 9x
1961 wcstoumax NEW: ISO C 9x
1963 wordexp NEW: POSIX.2
1964 wordfree NEW: POSIX.2
1965 write_profiling REMOVED
1966 xdecrypt NEW: Secure RPC
1967 xdr_authdes_cred NEW: Secure RPC
1968 xdr_authdes_verf NEW: Secure RPC
1969 xdr_cryptkeyarg NEW: Secure RPC
1970 xdr_cryptkeyarg2 NEW: Secure RPC
1971 xdr_cryptkeyres NEW: Secure RPC
1972 xdr_getcredres NEW: Secure RPC
1973 xdr_key_netstarg NEW: Secure RPC
1974 xdr_key_netstres NEW: Secure RPC
1975 xdr_keybuf NEW: Secure RPC
1976 xdr_keystatus NEW: Secure RPC
1977 xdr_netnamestr NEW: Secure RPC
1978 xdr_sizeof NEW: Secure RPC
1979 xdr_unixcred NEW: sunrpc ext
1980 xencrypt NEW: Secure RPC
1981 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1992 * inet_ntoa is thread-safe
1994 * updwtmp is moved from libutil to libc
1996 * rewrite of cbrt function
1998 * update of timezone data
2012 * add atoll function
2014 * fix complex problems in Berkeley DB code
2016 * fix math functions
2020 * fixed lots of header problems (especially Linux/GNU specific)
2022 * dynamic loader preserves all registers
2024 * Roland McGrath provided support for handling of auxiliary objects in
2025 the ELF dynamic loader.
2027 * support for parallel builds is improved
2031 * GNU extensions are no longer declared by default. To enable them you
2032 must define the macro `_GNU_SOURCE' in your program or compile with
2035 * The library has changed from using GNU ld symbol aliases to using weak
2036 symbols where available. The ELF object file format supports weak
2037 symbols; GNU ld also supports weak symbols in the a.out format. (There
2038 is also now support for other GNU ld extensions in ELF. Use the
2039 `--with-elf' option to configure to indicate you have ELF, and
2040 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2041 of many files which contained only symbol aliases, reducing the size of
2042 the source and the compiled library; many other files were renamed to
2043 less cryptic names previously occupied by the symbol alias files.
2044 There is a new header file <elf.h> for programs which operate on
2045 files in the ELF format.
2047 * Converted to Autoconf version 2, so `configure' has more options.
2048 Run `configure --help' to see the details.
2050 * The library can now be configured to build profiling, highly-optimized
2051 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2052 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2053 `configure' enable building these extra libraries. The shared library is
2054 built by default when using both ELF and GNU ld. When shared libraries
2055 are enabled, the new library `-ldl' is available for arbitrary run-time
2056 loading of shared objects; its interface is defined in <dlfcn.h>. The
2057 new header file <link.h> gives access to the internals of the run-time
2058 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2059 application of same name on other systems and it provides information
2060 about dynamically linked binaries.
2062 * The C library now provides the run-time support code for profiling
2063 executables compiled with `-pg'. Programs can control the profiling code
2064 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2065 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2066 the support for this file format was contributed by David Mosberger-Tang.
2068 * The math code has been replaced with a math library based on fdlibm from
2069 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2070 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2071 functions. The math functions now reside in a separate library, so
2072 programs using them will need to use `-lm' their linking commands.
2074 * John C. Bowman contributed optimized ix87 assembler inline functions.
2076 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2077 mechanism similar to that found in Solaris 2. This is now used for the
2078 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2079 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2080 file controls what services are used for each individual database. This
2081 works by loading shared libraries with names specified in `nsswitch.conf',
2082 so service modules can be changed or added at any time without even
2083 relinking any program. Currently there are the file, db, and NIS based
2084 NSS services available.
2086 * The new functions `strtoq' and `strtouq' parse integer values from
2087 strings, like `strtol' and `strtoul', but they return `long long int' and
2088 `unsigned long long int' values, respectively (64-bit quantities).
2090 * The new functions `strtof' and `strtold' parse floating-point values from
2091 strings, like `strtod', but they return `float' and `long double' values,
2092 respectively (on some machines `double' and `long double' are the same).
2094 * Ulrich Drepper has contributed new implementations of the floating-point
2095 printing and reading code used in the `printf' family of functions and
2096 `strtod', `strtof', and `strtold'. These new functions are perfectly
2097 accurate, and much faster than the old ones.
2099 * The implementation of the POSIX locale model was completely rewritten by
2100 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2101 to compile the POSIX locale definition.
2103 * The former dummy implementations of the strcoll and strxfrm function are
2104 now replaced by fully functional code contributed by Ulrich Drepper. The
2105 collation information comes from the POSIX locale definitions.
2107 * The new header <langinfo.h> defines an interface for accessing
2108 various locale-dependent data (using the locale chosen with `setlocale').
2110 * Ulrich Drepper has contributed a new suite of functions for operation on
2111 wide-character and multibyte-character strings, in <wchar.h>;
2112 and classification and case conversion of wide characters, in <wctype.h>.
2113 These new functions are conforming to the ISO C, Amendement 1 specification.
2115 * There is now a second implementation of the standard I/O library available.
2116 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2117 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2119 * You can now use positional parameter specifications in format strings
2120 for the `printf' and `scanf' families of functions. For example,
2121 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2122 ``Number 6, Mr Jones''. This is mainly useful when providing different
2123 format strings for different languages, whose grammars may dictate
2124 different orderings of the values being printed. To support this
2125 feature, the interface for `register_printf_handler' has changed; see
2126 the header file <printf.h> for details.
2128 * The `printf' and `scanf' families of functions now understand a new
2129 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2130 to group numbers as indicated by the locale; for `scanf' and friends, this
2131 says to accept as valid only a number with all the proper grouping
2132 separators in the right places. In the default "C" locale, numbers are
2133 not grouped; but locales for specific countries will define the usual
2134 conventions (i.e. separate thousands with `,' in the US locale).
2136 * The pgrp functions have been regularized, slightly incompatibly but much
2137 less confusingly. The core functions are now `getpgid' and `setpgid',
2138 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2139 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2140 provided for compatibility. There is no longer an incompatible `getpgrp'
2141 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2143 * The new header file <fts.h> and suite of functions simplify programs that
2144 operate on directory trees. This code comes from 4.4 BSD.
2146 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2147 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2148 NSS scheme used in glibc.
2150 * There is a new malloc debugging hook `__memalign_hook'.
2152 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2153 `unsigned int' in <sys/types.h>. These are for compatibility only and
2154 their use is discouraged.
2156 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2157 done differently, so that it works even without GNU ld.
2159 * New function `euidaccess' checks allowed access to a file like `access',
2160 but using the effective IDs instead of the real IDs.
2162 * The time zone data files have been updated for the latest and greatest
2163 local time conventions of the countries of the world.
2165 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2168 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2169 for formatting floating-point numbers. They are provided only for
2170 compatibility; new programs should use `sprintf' instead. There are
2171 also equivalent function for the `long double' floating-point type and
2172 all functions also exist in a reentrant form.
2174 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2175 functions for maintaining the login-record files (primarily of use to
2176 system programs such as `login'), and convenient functions for
2177 allocating and initializing a pseudo-terminal (pty) device.
2179 * Ulrich Drepper has contributed new support for System V style
2180 shared memory and IPC on systems that support it.
2182 * Ulrich Drepper has contributed several miscellaneous new functions found
2183 in System V: The `hsearch' family of functions provide an effective
2184 implementation of hash tables; `a64l' and `l64a' provide a very simple
2185 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2188 * Ulrich Drepper has contributed new reentrant counterparts for the
2189 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2191 * Ulrich Drepper has contributed new, highly-optimized versions of several
2192 string functions for the i486/Pentium family of processors.
2194 * Ulrich Drepper has updated the Linux-specific code, based largely
2195 on work done in Hongjiu Lu's version of GNU libc for Linux.
2196 The GNU library now supports Linux versions 2.0.10 and later,
2197 using the ELF object file format (i[3456]86-*-linux).
2199 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2201 * David Mosberger-Tang and Richard Henderson have ported the C library
2202 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2203 dynamic linking support for ELF/Alpha.
2205 * Richard Henderson contributed several Alpha optimized assembler function
2206 for arithmetic and string handling.
2208 * Ulrich Drepper has contributed a new set of message catalog functions to
2209 support multiple languages using the <libintl.h> interface, for use with
2210 his new package GNU gettext. Translation volunteers have contributed
2211 catalogs of the library's messages in Spanish, German, and Korean.
2213 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2214 program and the `catgets' function for reading the catalog files it
2215 creates. (The <libintl.h> interface is preferred; we include the
2216 <nl_types.h> interface using `catgets' only for source compatibility with
2217 programs already written to use it.)
2219 * New header file <values.h> gives SVID-compatible names for <limits.h>
2222 * Various new macros, declarations, and small header files for compatibility
2225 * New function `group_member' is a convenient way to check if a process has
2226 a given effective group ID.
2228 * When using GCC 2.7 and later, the socket functions are now declared in a
2229 special way so that passing an argument of type `struct sockaddr_in *',
2230 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2231 `struct sockaddr *' type, does not generate a type-clash warning.
2233 * New function `error' declared in header file <error.h> is a convenient
2234 function for printing error messages and optionally exiting; this is the
2235 canonical function used in GNU programs. The new functions `err', `warn',
2236 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2237 doing the same thing.
2239 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2240 POSIX.2 `glob' function to do ~ and {...} expansion.
2242 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2243 `clearenv' which is used in POSIX.9 is also available.
2245 * New function `getsid' returns session ID number on systems that support it.
2247 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2248 files <db.h> and <mpool.h> provide a rich set of functions for several
2249 types of simple databases stored in memory and in files, and <ndbm.h> is
2250 an old `ndbm'-compatible interface using the `db' functions. Link with
2251 `-ldb' to get these functions.
2253 * New macro `strdupa' copies a string like `strdup', but uses local stack
2254 space from `alloca' instead of dynamic heap space from `malloc'.
2256 * New function `strnlen' is like `strlen' but searches only a given maximum
2257 number of characters for the null terminator. `stpncpy', `strndup' and
2258 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2261 * New function `statfs' in header <sys/statfs.h>.
2263 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2264 provide convenient functions for operating on blocks of null-terminated
2267 * A new suite of functions in <utmp.h> handle all the details of reading
2268 and writing the utmp file.
2270 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2273 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2274 completely POSIX compliant and also implemented the extended functionality
2275 to handle alternate digit representation and alternate era date formats.
2277 * Ulrich Drepper provided an implementation of the `strptime' function
2278 defined in XPG4.2 which transforms a string into a `struct tm' value.
2280 * Paul Eggert provided the tzselect shell script as part of the timezone
2281 code. The shell script makes it easy to select the correct timezone
2284 * The implementation of the malloc family of functions is completely replaced
2285 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2286 The implementation uses the mmap function (if available) and it is
2287 optimized for the use in multi threaded programs.
2289 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2290 functions. This new functionality is usable by specifying a special
2291 salt string and it is compatible with implementation on *BSD systems.
2293 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2294 `getsubopt' to handle second level command line options, `bsd_signal'
2295 to access BSD style `signal' functionality, the obsolete `regexp' style
2298 * the `lchown' function is available on system which support this
2301 * The implementation of the shadow password handling function was contributed
2304 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2306 * POSIX.1g support was added. The <sys/select.h> header is available,
2307 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2308 implementation of `getaddrinfo'.
2312 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2314 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2315 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2317 * The new function `daemon' from 4.4 BSD is useful for server programs that
2318 want to put themselves in the background.
2320 * Joel Sherrill has contributed support for several standalone boards that
2321 run without an operating system.
2323 * `printf', `scanf' and friends now accept a `q' type modifier for long
2324 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2326 * All of the code taken from BSD (notably most of the math and networking
2327 routines) has been updated from the BSD 4.4-Lite release.
2329 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2331 * The new functions `getdomainname' and `setdomainname' fetch or change the
2332 YP/NIS domain name. These are system calls which exist on systems which
2335 * The time zone data files have been updated for the latest international
2338 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2339 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2343 * The C library now includes support for Sun RPC, from Sun's free
2344 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2345 are included. (There is still no support for YP.)
2347 * Tom Quinn has contributed a port of the C library to SGI machines running
2348 Irix 4 (mips-sgi-irix4).
2350 * The new `lockf' function is a simplified interface to the locking
2351 facilities of `fcntl', included for compatibility.
2353 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2355 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2357 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2360 * The error message printed by `assert' for a failed assertion now includes
2361 the name of the program (if using GNU ld) and the name of the calling
2362 function (with versions of GCC that support this).
2364 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2366 * The library now includes the <sys/mman.h> header file and memory
2367 management functions `mmap', `munmap', `mprotect', `msync', and
2368 `madvise', on systems that support those facilities.
2370 * The interface for `mcheck' has changed slightly: the function called to
2371 abort the program when an allocation inconsistency is detected now takes
2372 an argument that indicates the type of failure. The new function
2373 `mprobe' lets you request a consistency check for a particular block at
2374 any time (checks are normally done only when you call `free' or `realloc'
2377 * It is now possible to easily cross-compile the C library, building on one
2378 system a library to run on another machine and/or operating system. All
2379 you need to do is set the variable `HOST_CC' in `configparms' to the
2380 native compiler for programs to run on the machine you are building on (a
2381 few generator programs are used on Unix systems); set `CC' to the
2384 * The new function `fexecve' (only implemented on the GNU system) executes
2385 a program file given a file descriptor already open on the file.
2389 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2390 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2392 * You can set the variable `libprefix' in `configparms' to specify a prefix
2393 to be prepended to installed library files; this makes it easy to install
2394 the GNU C library to be linked as `-lgnuc' or whatever.
2396 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2397 copies a limited number of characters from a string, and returns the
2398 address of the last character written.
2400 * You no longer need to check for whether the installed `stddef.h' is
2401 compatible with the GNU C library. configure now checks for you.
2403 * You can now define a per-stream `fileno' function to convert the
2404 stream's cookie into an integral file descriptor.
2406 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2407 allocates zero bytes of storage, and returns a unique pointer which
2408 you can pass to `realloc' or `free'. The behavior is undefined if
2409 you dereference this pointer.
2411 * The C library now runs on Sony NEWS m68k machines running either
2412 NewsOS 3 or NewsOS 4.
2414 * The new `syscall' function is a system-dependent primitive function
2415 for invoking system calls. It has the canonical behavior on Unix
2416 systems, including unreliable return values for some calls (such as
2417 `pipe', `fork' and `getppid').
2419 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2420 to `EAGAIN', which is the preferred name. On systems whose kernels
2421 use two distinct codes, the C library now translates EWOULDBLOCK to
2422 EAGAIN in every system call function.
2426 * The GNU C Library Reference Manual is now distributed with the library.
2427 `make dvi' will produce a DVI file of the printed manual.
2428 `make info' will produce Info files that you can read on line using C-h i
2429 in Emacs or the `info' program.
2430 Please send comments on the manual to bug-glibc-manual@gnu.org.
2432 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2434 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2436 * Jason Merrill has contributed a port to the Sequent Symmetry running
2437 Dynix version 3 (i386-sequent-dynix).
2439 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2440 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2442 * New function `memory_warnings' lets you arrange to get warnings when
2443 malloc is running out of memory to allocate, like Emacs gives you.
2445 * The C library now contains the relocating allocator used in Emacs 19 for
2446 its editing buffers. This allocator (ralloc) minimizes allocation
2447 overhead and fragmentation by moving allocated regions around whenever it
2448 needs to. You always refer to a ralloc'd region with a "handle" (a
2449 pointer to a pointer--an object of type `void **').
2451 * There is a new `printf' format: `%m' gives you the string corresponding
2452 to the error code in `errno'.
2454 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2455 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2456 pass, the `a' modifier says to fill in a `char **' you pass with a
2459 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2460 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2461 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2463 * `mkstemp' is a traditional Unix function to atomically create and open a
2464 uniquely-named temporary file.
2468 * The standard location for the file that says what the local timezone is
2469 has changed again. It is now `/usr/local/etc/localtime' (or more
2470 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2472 * The distribution no longer contains any files with names longer than 14
2475 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2476 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2478 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2482 * The configuration process has changed quite a bit. The `configure'
2483 script is now used just like the configuration scripts for other GNU
2484 packages. The `sysdeps' directory hierarchy is much rearranged.
2485 The file `INSTALL' explains the new scheme in detail.
2487 * The header files no longer need to be processed into ANSI C and
2488 traditional C versions. There is just one set of files to install, and
2489 it will work with ANSI or old C compilers (including `gcc -traditional').
2491 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2492 MIPS DECStation running Ultrix 4.
2494 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2495 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2496 made itself into a shared library.
2498 * Yet further improved support for the i386, running 4.3 BSD-like systems
2499 (such as Mach 3 with the Unix single-server), or System V.
2501 * New function `strncasecmp' to do case-insensitive string comparison
2502 with limited length.
2504 * New function `strsep' is a reentrant alternative to `strtok'.
2506 * New functions `scandir' and `alphasort' for searching directories.
2508 * New function `setenv' is a better interface to `putenv'.
2510 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2511 function for traversing a directory tree.
2513 * The GNU obstack package is now also part of the C library.
2514 The new function `open_obstack_stream' creates a stdio stream that
2515 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2516 formatted output directly to an obstack.
2518 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2519 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2521 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2523 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2524 things to your strings.
2526 * There are some new test programs: test-fseek, testmb, and testrand.
2528 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2529 These ports are not finished, but are a good starting place for really
2530 supporting those systems.
2532 * `/etc/localtime' is now the standard location for the file that says what
2533 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2534 This follows the general principle that `/etc' is the place for all local
2535 configuration files.
2537 * The C library header files now use `extern "C"' when used by the C++
2538 compiler, so the C library should now work with C++ code.
2540 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2541 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2544 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2545 function which uses the `merge sort' algorithm, and is said to be
2546 significantly faster than the old GNU `qsort' function. Merge sort is
2547 now the standard `qsort' function. The new algorithm can require a lot
2548 of temporary storage; so, the old sorting function is called when the
2549 required storage is not available.
2551 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2552 provides the Unix `crypt' function, plus some other entry points.
2554 * The code and header files taken from 4.4 BSD have been updated with the
2555 latest files released from Berkeley.
2557 ----------------------------------------------------------------------
2558 Copyright information:
2560 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2562 Permission is granted to anyone to make or distribute verbatim copies
2563 of this document as received, in any medium, provided that the
2564 copyright notice and this permission notice are preserved,
2565 thus giving the recipient permission to redistribute in turn.
2567 Permission is granted to distribute modified versions
2568 of this document, or of portions of it,
2569 under the above conditions, provided also that they
2570 carry prominent notices stating who last changed them.
2573 version-control: never