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 16009, 16617, 16618, 17266, 17269, 17370, 17371, 17460, 17485, 17555,
13 17625, 17630, 17801, 18694, 18928, 19018.
15 * The LD_POINTER_GUARD environment variable can no longer be used to
16 disable the pointer guard feature. It is always enabled.
18 * CVE-2015-1472 Under certain conditions wscanf can allocate too little
19 memory for the to-be-scanned arguments and overflow the allocated
20 buffer. The implementation now correctly computes the required buffer
21 size when using malloc.
23 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
24 under certain input conditions resulting in the execution of a shell for
25 command substitution when the applicaiton did not request it. The
26 implementation now checks WRDE_NOCMD immediately before executing the
27 shell and returns the error WRDE_CMDSUB as expected.
29 * CVE-2012-3406 printf-style functions could run into a stack overflow when
30 processing format strings with a large number of format specifiers.
32 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
33 infinite loopif the DNS response contained a PTR record of an unexpected
36 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 release.
37 It has been fixed to match 2.19 and older, but binaries built against 2.20
38 might need to be recompiled. See BZ#18694.
42 * The following bugs are resolved with this release:
44 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
45 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
46 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
47 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
48 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
49 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
50 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
51 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
52 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
53 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
54 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
55 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
56 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
57 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
58 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
60 * Reverted change of ABI data structures for s390 and s390x:
61 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
62 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
63 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
64 are preserved pointing straight to the same implementation as the old ones.
65 Given that, new callers will simply provide a too-big buffer to these
66 functions. Any applications/libraries out there that embed jmp_buf or
67 ucontext_t in an ABI-relevant data structure that have already been rebuilt
68 against 2.19 headers will have to rebuilt again. This is necessary in any
69 case to revert the breakage in their ABI caused by the glibc change.
71 * Support for file description locks is added to systems running the
72 Linux kernel. The standard file locking interfaces are extended to
73 operate on file descriptions, not file descriptors, via the use of
74 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
75 are associated with an open file instead of a process.
77 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
79 * The minimum Linux kernel version that this version of the GNU C Library
80 can be used with is 2.6.32.
82 * Running the testsuite no longer terminates as soon as a test fails.
83 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
84 with PASS or FAIL lines for individual tests. A summary of the results is
85 printed, including a list of failing lists, and "make check" exits with
86 error status if there were any unexpected failures. "make check
87 stop-on-test-failure=y" may be used to keep the old behavior.
89 * The am33 port, which had not worked for several years, has been removed
92 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
93 supported; they now act the same as _DEFAULT_SOURCE (but generate a
94 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
95 conflicted with POSIX (support for which was removed in 2.19), the
96 interfaces those macros enabled remain available when compiling with
97 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
100 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
102 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
103 This may improve lock scaling of existing programs on TX capable systems.
104 The lock elision code is only built with --enable-lock-elision=yes and
105 then requires a GCC version supporting the TX builtins. With lock elision
106 default mutexes are elided via __builtin_tbegin, if the cpu supports
107 transactions. By default lock elision is not enabled and the elision code
110 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
111 copy the path argument. This allowed programs to cause posix_spawn to
112 deference a dangling pointer, or use an unexpected pathname argument if
113 the string was modified after the posix_spawn_file_actions_addopen
116 * All supported architectures now use the main glibc sysdeps directory
117 instead of some being in a separate "ports" directory (which was
118 distributed separately before glibc 2.17).
120 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
121 On configurations that support it (all Linux configurations), it's now
122 used regardless of the --enable-add-ons switch to configure. It is no
123 longer possible to build such configurations without pthreads support.
125 * Locale names, including those obtained from environment variables (LANG
126 and the LC_* variables), are more tightly checked for proper syntax.
127 setlocale will now fail (with EINVAL) for locale names that are overly
128 long, contain slashes without starting with a slash, or contain ".." path
129 components. (CVE-2014-0475) Previously, some valid locale names were
130 silently replaced with the "C" locale when running in AT_SECURE mode
131 (e.g., in a SUID program). This is no longer necessary because of the
134 * On x86-64, the dynamic linker's lazy-binding support is now compatible
135 with application code using Intel MPX instructions. (With all previous
136 versions, the MPX register state could be clobbered when making calls
137 into or out of a shared library.) Note that while the new dynamic
138 linker is compatible with all known x86 hardware whether or not it
139 supports Intel MPX, some x86 instruction-set emulators might fail to
140 handle the new instruction encodings. This is known to affect Valgrind
141 versions up through 3.9 (but will be fixed in the forthcoming 3.10
142 release), and might affect other tools that do instruction emulation.
144 * Support for loadable gconv transliteration modules has been removed.
145 The support for transliteration modules has been non-functional for
146 over a decade, and the removal is prompted by security defects. The
147 normal gconv conversion modules are still supported. Transliteration
148 with //TRANSLIT is still possible, and the //IGNORE specifier
149 continues to be supported. (CVE-2014-5119)
151 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
152 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
153 resulting a denial-of-service security vulnerability in applications which
154 use functions related to iconv. (CVE-2014-6040)
158 * The following bugs are resolved with this release:
160 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
161 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
162 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
163 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
164 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
165 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
166 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
167 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
168 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
169 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
170 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
171 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
172 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
173 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
174 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
175 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
176 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
177 16431, 16453, 16474, 16506, 16510, 16529
179 * Slovenian translations for glibc messages have been contributed by the
180 Translation Project's Slovenian team of translators.
182 * The public headers no longer use __unused nor __block. This change is to
183 support compiling programs that are derived from BSD sources and use
184 __unused internally, and to support compiling with Clang's -fblock
185 extension which uses __block.
187 * CVE-2012-4412 The strcoll implementation caches indices and rules for
188 large collation sequences to optimize multiple passes. This cache
189 computation may overflow for large collation sequences and may cause a
190 stack or buffer overflow. This is now fixed to use a slower algorithm
191 which does not use a cache if there is an integer overflow.
193 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
194 rules for large collation sequences to optimize multiple passes and falls
195 back to alloca if malloc fails, resulting in a possible stack overflow.
196 The implementation now falls back to an uncached collation sequence lookup
199 * CVE-2013-4788 The pointer guard used for pointer mangling was not
200 initialized for static applications resulting in the security feature
201 being disabled. The pointer guard is now correctly initialized to a
202 random value for static applications. Existing static applications need
203 to be recompiled to take advantage of the fix (bug 15754).
205 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
206 to the d_name member of struct dirent, or omit the terminating NUL
207 character. (Bugzilla #14699).
209 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
210 aligned_alloc functions could allocate too few bytes or corrupt the
211 heap when passed very large allocation size values (Bugzilla #15855,
214 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
215 for AF_INET6 has been fixed (Bugzilla #16072).
217 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
218 pap_CW, quz_PE, the_NP.
220 * Substantially revised locales: gd_GB, ht_HT
222 * The LC_ADDRESS field was updated to support country_car for almost all
225 * ISO 1427 definitions were updated.
227 * ISO 3166 definitions were updated.
229 * The localedef utility now supports --big-endian and --little-endian
230 command-line options to generate locales for a different system from that
231 for which the C library was built.
233 * Binary locale files now only depend on the endianness of the system for
234 which they are generated and not on other properties of that system. As a
235 consequence, binary files generated with new localedef may be incompatible
236 with old versions of the GNU C Library, and binary files generated with
237 old localedef may be incompatible with this version of the GNU C Library,
238 in the following circumstances:
240 + Locale files may be incompatible on m68k systems.
242 + Locale archive files (but not separate files for individual locales) may
243 be incompatible on systems where plain "char" is signed.
245 * The configure option --disable-versioning has been removed. Builds with
246 --disable-versioning had not worked for several years.
248 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
249 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
251 * SystemTap probes for malloc have been introduced.
253 * SystemTap probes for slow multiple precision fallback paths of
254 transcendental functions have been introduced.
256 * Support for powerpc64le has been added.
258 * The soft-float powerpc port now supports e500 processors.
260 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
262 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
263 set of header declarations that are enabled by default, even when other
264 feature test macros or compiler options such as -std=c99 would otherwise
265 disable some of those declarations.
267 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
268 conflict with POSIX. The libbsd-compat library (which was a dummy library
269 that did nothing) has also been removed.
271 * Preliminary documentation about Multi-Thread, Async-Signal and
272 Async-Cancel Safety has been added.
274 * Change of ABI data structures for s390 and s390x:
275 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
276 allow for future hardware extensions. All library functions that accept or
277 return these structures were versioned in order to provide backwards
278 compatibility with existing code. However, not all cases can be handled
279 with interface versioning. If an application embeds either structure into
280 another structure and that structure is passed to another compilation unit
281 which expects the newer larger-sized object then any access to the new
282 fields will result in undefined behaviour. Similarly any access to fields
283 that were moved by the enlarging of the structures will cause undefined
284 behaviour. To fix the undefined behaviour all objects that are part of the
285 final in-memory image must agree on the size of structures, and this may
286 require recompilation.
290 * The following bugs are resolved with this release:
292 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
293 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
294 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
295 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
296 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
297 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
298 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
299 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
300 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
301 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
302 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
303 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
304 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
307 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
308 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
309 Distributions can re-enable building and using pt_chown via the new configure
310 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
311 considerable security risks and should only be used if the distribution
312 understands and accepts the risks.
314 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
317 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
318 fixed (Bugzilla #15330).
320 * Add support for calling C++11 thread_local object destructors on thread
321 and program exit. This needs compiler support for offloading C++11
322 destructor calls to glibc.
324 * Improved worst case performance of libm functions with double inputs and
327 * Support for priority inherited mutexes in pthread condition variables on
328 non-x86 architectures.
330 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
332 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
334 * Optimized string functions for ARM. Implemented by Will Newton and
337 * Optimized libm functions for SPARC. Implemented by David S. Miller.
339 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
342 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
343 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
345 * Added a benchmark framework to track performance of functions in glibc.
347 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
348 It is based on draft TS 18661 and currently enabled as a GNU extension.
350 * On Linux, the clock function now uses the clock_gettime system call
351 for improved precision, rather than old times system call.
353 * Added support for version-3 tz format files. This is needed when using
354 the tz database release 2013e or later, and affects a few unusual cases --
355 currently only TZ='America/Godthab' for time stamps after 2037.
357 * Added new API functions pthread_getattr_default_np and
358 pthread_setattr_default_np to get and set the default pthread
359 attributes of a process.
361 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
362 This may improve lock scaling of existing programs on TSX capable systems.
363 When the --enable-lock-elision=yes parameter is specified at configure
364 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
367 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
368 availability). Implemented by Ryan S. Arnold.
370 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
374 * The following bugs are resolved with this release:
376 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
377 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
378 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
379 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
380 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
381 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
382 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
383 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
384 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
385 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
386 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
387 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
388 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
389 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
390 14879, 14889, 14893, 14898, 14914.
392 * Optimization of memcpy for MIPS.
394 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
395 EMFILE has been fixed (Bugzilla #14889).
397 * The add-on ports collection is now distributed in the "ports" subdirectory
398 of the main GNU C Library distribution, rather than separately.
400 * Port to ARM AArch64 contributed by Linaro.
402 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
403 Optimized versions of memcpy, memset, and memcmp added for System z10 and
405 Implemented by Andreas Krebbel.
407 * The new function secure_getenv allows secure access to the environment,
408 returning NULL if running in a SUID/SGID process. This function replaces
409 the internal function __secure_getenv.
411 * SystemTap static probes have been added into the dynamic linker.
412 Implemented by Gary Benson.
414 * Optimizations of string functions strstr, strcasestr and memmem.
415 Implemented by Maxim Kuvyrkov.
417 * The minimum Linux kernel version that this version of the GNU C Library
418 can be used with is 2.6.16.
420 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
421 powerpc POWER7. Implemented by Will Schmidt.
423 * New configure option --disable-nscd builds the C library such that it
424 never attempts to contact the Name Service Caching Daemon (nscd).
425 New configure option --disable-build-nscd avoids building nscd itself;
426 this is the default if --disable-nscd is used.
428 * Improved support for cross-compilation, including cross-testing and
429 bootstrap builds without a previously built glibc.
431 * Several testsuite tests are now able to test multiple IFUNC variants of an
432 interface, rather than just testing the one that would be chooen by
435 * New configure options --with-bugurl and --with-pkgversion, for
436 distributors to use to embed their bug-reporting and package version
437 information in --help and --version output.
439 * The ttyname and ttyname_r functions on Linux now fall back to searching for
440 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
441 allows creation of chroots without the procfs mounted on /proc.
443 * The `crypt' function now fails if passed salt bytes that violate the
444 specification for those values. On Linux, the `crypt' function will
445 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
446 enabled, and fail on encrypted strings using the MD5 or DES algorithm
447 when the mode is enabled.
449 * The `clock_*' suite of functions (declared in <time.h>) is now available
450 directly in the main C library. Previously it was necessary to link with
451 -lrt to use these functions. This change has the effect that a
452 single-threaded program that uses a function such as `clock_gettime' (and
453 is not linked with -lrt) will no longer implicitly load the pthreads
454 library at runtime and so will not suffer the overheads associated with
455 multi-thread support in other code such as the C++ runtime library.
457 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
462 * The following bugs are resolved with this release:
464 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
465 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
466 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
467 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
468 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
469 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
470 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
471 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
472 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
473 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
474 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
475 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
476 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
477 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
478 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
479 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
480 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
481 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
482 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
483 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
484 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
485 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
488 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
489 configuring glibc with:
490 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
491 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
492 Implemented by H.J. Lu.
496 + define static_assert
498 + do not declare gets
500 + declare at_quick_exit and quick_exit also for ISO C11
502 + aligned_alloc. NB: The code is deliberately allows the size parameter
503 to not be a multiple of the alignment. This is a moronic requirement
504 in the standard but it is only a requirement on the caller, not the
509 + uchar.h support added
511 + CMPLX, CMPLXF, CMPLXL added
513 Implemented by Ulrich Drepper.
515 * Support for the IA-64 has been moved to ports.
517 * Remove support for anything but ELF binary format
519 * Checking versions of poll, ppoll added.
520 Implemented by Ulrich Drepper.
522 * More generic and 64-bit performance optimizations to math functions.
523 Implemented by Ulrich Drepper.
525 * New configure option --enable-obsolete-rpc makes the deprecated RPC
526 headers and functions available at compile time as they were before
527 version 2.14. This option will be removed at some time in the future
528 after the TI-RPC library becomes fully sufficient for the needs of
529 existing applications.
531 * Compatibility code for Linux kernel versions before 2.4 has been removed.
532 Note that glibc is not expected to work with any Linux kernel version
535 * New header <sys/auxv.h> and function getauxval allowing easy access to
536 the AT_* key-value pairs passed from the Linux kernel. The header also
537 defines the HWCAP_* bits associated with the AT_HWCAP key.
539 * New locales: mag_IN
541 * New configure option --enable-systemtap builds SystemTap static probes
542 into libc for setjmp and longjmp and into libpthread for various operations.
543 So far the setjmp/longjmp probes and some of the libpthread probes are
544 provided only for i*86 and x86_64.
545 Implemented by Roland McGrath and Rayson Ho.
547 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
549 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
552 * More optimized functions for SPARC. Implemented by David S. Miller.
554 * Improved support for cross-compilation, especially bootstrap builds
555 without a previously built glibc.
557 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
558 Chris Metcalf from Tilera.
560 * Support for the old ARM ABI has been removed from ports. Only the EABI is
561 now supported for ARM processors.
563 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
564 as the name of the dynamic linker, to distinguish it from the
565 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
567 * Support for CRIS has been removed from ports.
569 * A new class of installed header has been documented for low-level
570 platform-specific functionality. PowerPC added the first instance with a
571 function to provide time base register access. Contributed by Tulio
572 Magno Quites Machado Filho.
574 * ix86 configurations now install header files that are consistent with
575 what x86-64 configurations install. These same header files can be used
576 for -m32, -m64, or -mx32 builds.
577 Contributed by H.J. Lu.
579 * Math library bug fixes. A thorough audit of all open math library bugs was
580 conducted by Joseph Myers. Significant progress was made on many math
581 library bugs resulting in more accurate exceptions and function results.
582 Many thanks to all those that contributed including Andreas Jaeger for his
583 patch review and work on the x87 trigonometric instruction issues.
585 * Timezone data is no longer installed. Timezone-related binaries and scripts
586 will continue to be installed. Users should obtain their timezone data from
587 their distribution provider or from the tzdata package at
588 <ftp://munnari.oz.au/pub/>.
592 * The following bugs are resolved with this release:
594 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
595 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
596 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
597 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
598 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
599 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
600 13484, 13506, 13515, 13523, 13524, 13538, 13540
602 * New program pldd to list loaded object of a process
603 Implemented by Ulrich Drepper.
605 * Add nss_db support back to glibc. No more dependency on Berkeley db
606 and support for initgroups lookups.
607 Implemented by Ulrich Drepper.
609 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
610 Contributed by HJ Lu.
612 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
613 Contributed by HJ Lu.
615 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
616 on x86-32 and x86-64.
617 Contributed by Liubov Dmitrieva.
619 * Optimized strchr and strrchr for SSE on x86-32.
620 Contributed by Liubov Dmitrieva.
622 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
623 for x86-64 and x86-32.
624 Contributed by Liubov Dmitrieva.
626 * New interfaces: scandirat, scandirat64
627 Implemented by Ulrich Drepper.
629 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
630 Implemented by Ulrich Drepper.
632 * nscd now also caches the netgroup database.
633 Implemented by Ulrich Drepper.
635 * Integrate libm with gcc's -ffinite-math-only option.
636 Implemented by Ulrich Drepper.
638 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
639 to math functions. Implemented by Ulrich Drepper.
641 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
642 Implemented by Ulrich Drepper.
644 * New Linux interfaces: process_vm_readv, process_vm_writev
646 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
647 Implemented by Ulrich Drepper.
649 * Optimized nearbyint and strcasecmp for PPC.
650 Implemented by Adhemerval Zanella.
652 * New locales: bho_IN, unm_US, es_CU, ta_LK
656 * The following bugs are resolved with this release:
658 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
659 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
660 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
661 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
662 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
663 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
664 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
665 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
666 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
667 12795, 12811, 12813, 12814, 12841
669 * The RPC implementation in libc is obsoleted. Old programs keep working
670 but new programs cannot be linked with the routines in libc anymore.
671 Programs in need of RPC functionality must be linked against TI-RPC.
672 The TI-RPC implementation is IPv6 enabled and there are other benefits.
674 Visible changes of this change include (obviously) the inability to link
675 programs using RPC functions without referencing the TI-RPC library and the
676 removal of the RPC headers from the glibc headers.
677 Implemented by Ulrich Drepper.
679 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
680 syncfs, setns, sendmmsg
682 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
683 yue_HK, lij_IT, mhr_RU
685 * New encodings: CP770, CP771, CP772, CP773, CP774
687 * New program sotruss to trace calls through PLTs
688 Implemented by Ulrich Drepper.
690 * The malloc hook implementation is marked deprecated and will be removed
691 from the default implementation in the next version. The design never
692 worked ever since the introduction of threads. Even programs which do
693 not create threads themselves can use multiple threads created internally.
697 * The following bugs are resolved with this release:
699 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
700 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
701 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
702 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
705 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
707 * POWER7 optimizations: memset, memcmp, strncmp
709 * New optimized string functions for x86-64: strnlen (SSE2),
710 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
711 Implemented by Ulrich Drepper.
715 * The following bugs are resolved with this release:
717 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
718 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
719 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
720 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
721 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
722 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
723 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
724 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
726 * New interfaces: pthread_getname_np, pthread_setname_np
728 * New Linux interface: recvmmsg
730 * STT_GNU_IFUNC implemented for Sparc by David Miller.
732 * The dynamic linker now recognizes supported ABI versions from the
733 EI_ABIVERSION field in the ELF header.
734 Implemented by Ulrich Drepper.
736 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
737 will not be used to fill in password fields in the passwd.byname replies.
738 Instead it is used to synthesize the shadow.byname table, should it be
739 missing. This is a useful mode in some installations involving Solaris.
740 Implemented by Ulrich Drepper.
742 * New locales: kok_IN, sq_MK, cv_RU
746 * The following bugs are resolved with this release:
748 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
749 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
750 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
751 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
752 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
753 10789, 10817, 10823, 10840, 10847
755 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
757 Implemented by Ulrich Drepper.
759 * Checking version of longjmp added that fails if an uninitialized stack
760 frame would be created. Implemented by Ulrich Drepper.
762 * STT_GNU_IFUNC is now supported in static executables.
763 Implemented by H.J. Lu.
765 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
767 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
768 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
769 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
770 Contributed by H.J. Lu.
772 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
773 Implemented by Ulrich Drepper.
775 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
777 Contributed by H.J. Lu.
779 * Support for fma instruction in AVX on x86-64.
780 Implemented by H.J. Lu and Ulrich Drepper.
782 * AVX support in x86-64 auditing support in ld.so.
783 Implemented by H.J. Lu.
785 * STB_GNU_UNIQUE support added.
786 Implemented by Ulrich Drepper.
788 * Implement second fallback mode for optimized DNS lookup for even more
789 broken environments. If two requests from the same port are not
790 handled correctly close the socket and open a new one before sending
791 the second request. The 'single-request-reopen' option in /etc/resolv.conf
792 can be used to select this mode right away, instead of rediscovering the
793 necessity is every process again.
794 Implemented by Ulrich Drepper.
796 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
797 Implemented by Adam Tkac.
799 * Optimized iconv conversions for S390x.
800 Implemented by Andreas Krebbel.
802 * Using condvars with PI mutexes is now more efficient due to kernel
803 support for requeueing to PI futexes. NPTL support added for x86-64.
804 Implemented by Ulrich Drepper.
806 * New locales: ps_AF, my_MM
810 * The following bugs are resolved with this release:
812 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
813 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
814 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
815 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
816 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
818 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
819 Implemented by Ulrich Drepper.
821 * New Linux interfaces: accept4, fallocate, fallocate64.
822 Implemented by Ulrich Drepper.
824 * Correct declarations of string function when used in C++ code. This
825 could lead to compile errors for invalid C++ code.
827 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
830 * New POSIX 2008 interface: psiginfo
831 Implemented by Ulrich Drepper.
833 * New ISO C++1x interfaces: quick_exit, at_quick_exit
834 Implemented by Ulrich Drepper.
836 * Support for selecting between multiple function definitions at runtime
837 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
839 * The libcrypt library can now use the hash function implementations in
840 NSS. Implemented by Ulrich Drepper.
842 * The malloc implementation can be compiled to be less memory efficient
843 but higher performing in multi-threaded programs.
844 Implemented by Ulrich Drepper.
846 * New locales: nan_TW@latin, ks_IN
848 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
849 Implemented by Ulrich Drepper.
851 * Extended printf hook support. It is possible to use user-defined types
852 and extend existing format specifiers.
853 Implemented by Ulrich Drepper.
855 * Handling for group shadow files has been added.
856 Implemented by Ulrich Drepper.
858 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
859 servers (the case, e.g., for some people using the built-in DNS
860 server in ADSL modems/routers). There is a once-per-process timeout
861 in case of a broken server. To avoid it, users can run nscd or put
862 'options single-request' in /etc/resolv.conf.
863 Implemented by Ulrich Drepper.
867 * The following bugs are resolved with this release:
869 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
870 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
871 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
872 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
873 6968, 6974, 6980, 6995, 7008, 7009, 7029
875 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
876 up at the same time. Implemented by Ulrich Drepper.
878 * TLS descriptors for LD and GD on x86 and x86-64.
879 Implemented by Alexandre Oliva.
881 * getaddrinfo now handles DCCP and UDPlite.
882 Implemented by Ulrich Drepper.
884 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
885 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
886 Implemented by Ulrich Drepper.
888 * New implementation of memmem, strstr, and strcasestr which is O(n).
889 Implemented by Eric Blake.
891 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
893 * Implement "e" option for popen to open file descriptor with the
894 close-on-exec flag set. Implemented by Ulrich Drepper.
896 * Implement "b" mode for fmemopen. In this mode writes writes don't
897 implicitly add a NUL byte and seeks from the end of the buffer really
898 use the buffer end, not the string length as the basis.
899 Implemented by Ulrich Drepper.
901 * Many functions, exported and internal, now atomically set the close-on-exec
902 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
904 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
906 Implemented by Pravin Satpute.
908 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
912 * The following bugs are resolved with this release:
914 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
915 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
916 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
917 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
918 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
919 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
920 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
922 * New locales: bo_CN, bo_IN, shs_CA.
924 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
926 * Sorting rules for some Indian languages (Devanagari and Gujarati).
927 Implemented by Pravin Satpute.
929 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
931 * nscd caches now all timeouts for DNS entries
932 Implemented by Ulrich Drepper.
934 * nscd is more efficient and wakes up less often.
935 Implemented by Ulrich Drepper.
937 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
938 vdprintf, and obstack_vprintf.
939 Implemented by Jakub Jelinek.
941 * Faster memset for x86-64.
942 Implemented by Harsha Jagasia and H.J. Lu.
944 * Faster memcpy on x86.
945 Implemented by Ulrich Drepper.
947 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
948 Implemented by Ulrich Drepper.
950 * Faster sqrt and sqrtf implemention for some PPC variants.
951 Implemented by Steven Munroe.
955 * The following bugs are resolved with this release:
957 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
958 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
959 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
960 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
961 5071, 5103, 5104, 5112, 5113, 5184, 5186
963 * More checking functions: fread, fread_unlocked, open*, mq_open.
964 Implemented by Jakub Jelinek and Ulrich Drepper.
966 * Extend fortification to C++. Implemented by Jakub Jelinek.
968 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
969 by not recognizing 'a' as a modifier when those specs are requested.
970 Implemented by Jakub Jelinek.
972 * PPC optimizations to math and string functions.
973 Implemented by Steven Munroe.
975 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
976 options to be passed. Implemented by Ulrich Drepper.
978 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
980 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
981 Implemented by Ulrich Drepper.
983 * Handle private futexes in the NPTL implementation.
984 Implemented by Jakub Jelinek and Ulrich Drepper.
986 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
987 Implemented by Roland McGrath and Ulrich Drepper.
989 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
991 * SHA-256 and SHA-512 based password encryption.
992 Implemented by Ulrich Drepper.
994 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
995 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
998 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
999 Implemented by Ulrich Drepper.
1003 * The following bugs are resolved with this release:
1005 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1006 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1007 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1008 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1009 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1010 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1011 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1014 * New Linux interfaces: epoll_pwait, sched_getcpu.
1016 * New generic interfaces: strerror_l.
1018 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1022 * The following bugs are resolved with this release:
1024 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1025 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1026 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1027 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1028 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1029 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1030 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1031 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1032 3225, 3251, 3252, 3253, 3273
1034 * For Linux, the sorting of addresses returned by getaddrinfo now also
1035 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1036 Implemented by Ulrich Drepper.
1038 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1039 Implemented by Ulrich Drepper.
1041 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1043 * New iconv module for MIK. Contributed by Alexander Shopov.
1045 * For sites with broken group and/or passwd database, the auto-propagate
1046 option of nscd can prevent creating ID lookup entries from the results
1047 of a name lookup and vice versa. This usually is no problem but some
1048 site might have problems with the default behavior.
1049 Implemented by Ulrich Drepper.
1051 * Iterating over entire database in NIS can be slow. With the
1052 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1053 to trade time for memory. The entire database will be read at once.
1054 Implemented by Ulrich Drepper.
1056 * The interfaces introduced in RFC 3542 have been implemented by
1059 * Support for the new ELF hash table format was added by Ulrich Drepper.
1061 * Support for priority inheritance mutexes added by Jakub Jelinek and
1064 * Support for priority protected mutexes added by Jakub Jelinek.
1066 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1067 or_IN, csb_PL, fy_NL, sr_ME.
1071 * More overflow detection functions.
1073 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1074 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1076 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1077 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1078 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1079 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1080 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1081 by Masahide Washizawa.
1083 * It is now possible to install audit libraries for the dynamic linker using
1084 LD_AUDIT. Implemented by Ulrich Drepper.
1086 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1087 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1088 For a libc and libpthread that works well on Linux 2.4 kernels, we
1089 recommend using the stable 2.3 branch.
1091 * The new function open_wmemstream acts like open_memstream,
1092 but uses a wchar_t wide character buffer.
1094 * The new function ppoll is an improved version of poll, similar to pselect.
1096 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1097 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1098 renameat, unlinkat, linkat, symlinkat, readlinkat.
1100 * New Linux kernel system calls: unshare,
1101 inotify_init, inotify_add_watch, inotify_rm_watch.
1103 * The euidaccess function is now also known by the alias eaccess,
1104 for compatibility with some other systems.
1106 * Timezone data updated to 2006b version.
1110 * The following bugs are resolved with this release:
1112 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1113 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1114 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1115 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1116 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1117 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1119 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1121 * As of this release, GCC 4 can be used to compile the C Library.
1123 * Timezone data updated to 2005m version.
1127 * The following bugs are resolved with this release:
1129 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1130 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1131 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1132 777, 787, 821, 822, 823, 825
1134 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1138 * Support for RFC 3678. Real implementations exist only for Linux so far.
1139 Implemented by Ulrich Drepper.
1141 * nscd can now cache entries persistently. Expiring entries are reloaded.
1142 For speedups the cache can be shared in memory with client processes.
1143 Implemented by Ulrich Drepper.
1145 * nscd can now perform SELinux checks.
1146 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1148 * getaddrinfo queries are now cached. Canonical name lookup is performed
1150 Implemented by Ulrich Drepper.
1152 * The nothrow function attribute is used when headers are used by gcc when
1153 compiling C code. This can avoid significant amounts of exception
1156 * The malloc functions perform more error checking and are stricter when
1157 it comes to reacting on errors. The default action is to terminate
1158 the process after showing an error message. Implemented by Ulrich Drepper.
1160 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1161 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1163 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1164 namespaces using the new function dlmopen(). This feature is of course,
1165 like most other dynamic loading functionality, not available in statically
1166 linked applications. Implemented by Ulrich Drepper.
1168 * Low-overhead boundary checking variants of string and some stdio functions
1169 were added. These are to be used in conjunction with a gcc patch by
1170 Jakub Jelinek which adds calls to these functions if possible.
1171 Implemented by Jakub Jelinek and Ulrich Drepper.
1173 * Old code for several operating systems and machine architectures that
1174 have not been in working condition in a long time have been removed from
1175 the main source tree maintained by the GNU C Library's maintainers.
1176 These files are now reside in the separate `ports' source module
1177 that is usable as an add-on when building the library.
1181 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1182 interrogate the dynamic linker, compatible with the Solaris interface.
1184 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1185 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1187 * getifaddrs now uses the netlink interface on Linux to get its information.
1188 Implemented by Thorsten Kukuk.
1190 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1191 Implemented by Ulrich Drepper.
1193 * support for non-executable stacks on x86 has been added. Changes mostly
1196 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1199 * getaddrinfo now performs destination address selection according to
1204 * Thread-safe interfaces for many functions that access locale data
1205 were added in version 2.3, but these features were omitted from NEWS.
1206 Many functions have variants with an `_l' suffix that take a `locale_t'
1207 object as a parameter rather than consulting the current locale.
1208 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1209 create and maintain `locale_t' objects. Additionally, the new function
1210 `uselocale' sets "the current locale" (as used by functions not so
1211 parameterized) set for an individual thread. These features were added
1212 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1214 * The functions getresuid, getresgid, setresuid, and setresgid, which
1215 have long been available on Linux, are now declared in <unistd.h>
1216 and are now also available on the Hurd.
1218 * ELF thread-local storage support (TLS) now works on x86-64.
1220 * The new dynamic string token $LIB is expanded in shared library names.
1221 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1223 * Aldy Hernandez contributed complete software floating point support for
1224 PowerPC machines with no FPU.
1226 * fexecve is implemented on Linux.
1228 * The `btowc' function should work at least twice as fast due to
1229 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1231 * With approriate thread add-ons cancelable functions are now implemented
1232 in libc.so as well. No need to call the function in libpthread. This
1233 change allowed to finally disable the incorrect and expensive handling
1234 of weak definition in ld.so.
1236 * Yet more PLT entries in libc.so have been removed. We finally arrived
1237 at the bare minimum. Startup times improved appropriately.
1239 * Support for the new Linux/x86 system call interface was added. The
1240 AT_SYSINFO auxiliary vector entry is recognized and handled.
1244 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1247 * iconv (the program and the interface) now accepts empty names (excluding
1248 options like //TRANSLIT) to mean "use charset of current locale".
1250 * localedef can now transliterate characters in strings which are not in
1251 the provided charmap. The information from the input locale is used.
1253 * Prelinking support was added for ELF targets. This requires additional
1254 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1256 * Read-only stdio streams now use mmap to speed up operation by eliminating
1257 copying and buffer underflows. To use add 'm' to the mode string of
1258 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1260 * The malloc functions were completely rewritten by Wolfram Gloger based
1261 on Doug Lea's malloc-2.7.0.c.
1263 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1264 implementation of regex.
1266 * Bruno Haible upgraded the iconv and locale implementation to support
1269 * Contents of the LC_* and LANG environment variables in the CEN style are
1270 not recognized anymore. It never was used. Change by Ulrich Drepper.
1272 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1273 thread-local storage (TLS) ABI on some platforms.
1274 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1276 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1277 EUC-JISX0213, and TSCII.
1279 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1280 BSD-compatible interface for getting all network interface addresses.
1281 Implementation for IPv4 by Roland McGrath.
1283 * Loading of locale data is faster due to the introduction of a locale
1284 archive. Implemented by Roland McGrath and Ulrich Drepper.
1286 * Startup times are significantly reduced by not using exported functions
1287 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1290 * Steven Munroe contributed a port to PowerPC64/Linux.
1294 * The Hurd now uses the GNU libio implementation of stdio rather than the
1295 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1297 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1298 with the same behavior as the Linux system call of the same name.
1302 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1303 128-bit long double format.
1305 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1306 IBM1161, and IBM1162 charsets.
1308 * Andreas Jaeger contributed a port to x86-64/Linux.
1310 * Peter Bruin contributed a port to PowerPC/Hurd.
1312 * libc functions using I/O streams now can handle wide-oriented streams
1315 * optimizations in the dynamic linker. Binaries created by recent binutils
1316 versions start up quicker due to reduced time spent on relocations.
1318 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1322 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1323 asinh, atanh, j0 for the 128-bit long double format.
1325 * Bruno Haible updated all the code handling Unicode in some form to
1326 support Unicode 3.1.
1328 * Speed of regex for single-byte locales is back to previous levels.
1329 Patch by Isamu Hasegawa.
1331 * Alpha, SPARC, and IA-64 now also using floating stacks.
1333 * Startup time of internationalized applications greatly improved through
1334 iconv cache. Use iconvconfig to generate the cache file.
1335 Contributed by Ulrich Drepper.
1337 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1338 severe performance problems. Patch by David Mosberger.
1340 * The Hurd port got a lot more functionality like AIO, various stdio
1341 extensions, etc. Mainly done by Roland McGrath.
1343 * mtrace can now lookup symbols in shared libraries.
1347 * Intel's IA-64 math library is largely integrated. It provides fast and
1348 accurate implementatations for most basic and standard math functions
1349 in float, double, and long double format.
1351 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1352 and asin for the 96-bit long double format and asin, log, tan for the
1353 128-bit long double format.
1355 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1356 The basic double functions exist today. Contributed by Abraham Ziv
1357 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1358 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1360 * An asynchronous name lookup library was added. The interface is designed
1361 after POSIX AIO. The proposal was circulated beforehand to get comments.
1362 No negative ones came in. Implemented by Ulrich Drepper.
1364 * Port to S390/64bit contributed by Martin Schwidefsky
1365 <schwidefsky@de.ibm.com>.
1367 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1368 of functions for Linux/IA-64.
1370 * The RPC code is now thread safe. Threads can now use the same service
1371 of different services at the same time. Patch by Eric Norum
1372 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1374 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1375 family of functions for Linux/S390.
1377 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1378 of functions for Linux/x86.
1380 * Port to Linux/CRIS contributed by Axis Communications.
1384 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1385 we can now check for namespace violations and missing declarations. The
1386 result is that almost all headers are now Unix-compliant (as defined in
1387 the upcoming XPG6). The negative side is that some programs might need
1388 corrections, too, if they depend on the incorrect form of the headers in
1389 previous versions which defined too many symbols and included too many
1392 * regex now handles multibyte character sets correctly.
1393 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1395 * iconv (the program) does now conform to the upcoming XPG6 and handles
1396 charmaps. Instead of the charset names the path of charmaps can be
1397 provided and the conversion happens based on this data.
1398 Contributed by Ulrich Drepper.
1400 * The locale program now provides detailed information about the installed
1405 only lists the names of the supported locales
1409 provides details such as country, language, and codeset name.
1410 Contributed by Ulrich Drepper.
1414 * The gencat program now parses the input file according to the charset
1415 selected by the LC_CTYPE category. This is important for stateful
1416 character sets. To make generating catalogs easier there is a way
1417 to overwrite the charset selected by the locale: before the first
1418 message or $ quote line the catalog can contain a line like
1420 $ codeset=ISO-8859-2
1422 to select the charset (ISO-8859-2 in this case).
1424 Implemented by Shinya Hanataka and Ulrich Drepper.
1426 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1427 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1428 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1430 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1431 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1433 * The LANGUAGE environment variable is now ignored unless the locale is
1434 changed from the default "C" locale.
1436 * The usual bug fixes.
1440 * Greg McGary added runtime support for bounds checking using gcc's
1441 new -fbounded-pointers option. ix86 target is complete. PowerPC
1444 * Thorsten Kukuk added secure mode support to nscd.
1446 * The Berkeley db libraries have been removed.
1448 Related, the nss_db module is now in a separate package since it
1449 obviously requires a database library being available.
1451 * Wide character I/O streams implemented by Ulrich Drepper.
1453 * Functions from the extended socket API added by Ulrich Drepper.
1455 * Functions feenableexcept and fedisableexcept to control the
1456 behaviour of individual exceptions have been added by Andreas Jaeger.
1458 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1460 * The resolver code has been updated from bind 8.2.3-T5B which supports
1461 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1464 This change could in some situations effect backward compatibility. Since
1465 now `_res' is a thread-local instead of a global variable, modifying it
1466 in one thread does not have any effect in other threads.
1468 The resolver library was also extended to allow IPv6 as the transport
1469 protocol for the requests. This work was done by Stig Venaas.
1471 * Compatibility code for K&R C compilers has been removed from the
1472 header files. A ISO C compiler is needed to use the library
1473 (conforming to either C89 or C99 standard).
1475 * Complete rewrite of the localedef program to support multibyte character
1476 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1477 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1478 Implemented by Ulrich Drepper.
1480 Bruno Haible significantly improved the generation and use of the data
1481 structures for the wide character tables.
1483 * Plural handling in gettext implemented by Ulrich Drepper.
1485 * The utmp daemon has been removed.
1487 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1489 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1492 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1494 * POSIX barriers implemented by Kaz Kylheku.
1496 * POSIX spawn function family implemented by Ulrich Drepper.
1498 * POSIX spinlocks are now available.
1500 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1502 * the configure option --enable-kernel=X.Y.Z allows to strip out
1503 compatibility for kernel versions before X.Y.Z. This is currently only
1504 implemented for Linux.
1506 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1507 field sin6_scope_id. This means that all programs using IPv6 should be
1508 recompiled. Don't expect binary compatibility with previous glibc
1511 * various conversion modules for IBM character sets contributed by
1514 * IA-64 port by Jes Sorensen and HJ Lu.
1528 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1530 * New xdr functions are added; some rpc functions are now 64bit clean.
1532 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1534 * Fixed known incompatibilities with glibc 2.0.
1536 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1538 * Optimized a number of functions (especially the ELF dynamic loader).
1540 * Update timezone data files.
1542 * lots of charmaps corrections
1544 * some new locale definitions and charmaps
1549 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1550 conform to POSIX member type requirements. Symbol versions have been
1551 adjusted as needed within the library, and for direct use by applications,
1552 but there is potential for problems if third-party libraries use
1553 struct timeval as part of their interface. This does not present
1554 a problem for X and other "essential" system libraries.
1556 * An additional locale model to support C++ Standard Library locale
1557 model and probably more was implemented by Ulrich Drepper.
1559 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1562 * Miles Bader provided the `argp' function family to support hierachical
1563 command line argument parsing, layered on top of getopt.
1565 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1567 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1570 * scanf recognizes the %a and %A format for scanning floating point numbers.
1572 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1573 information and interfaces for the available integer types.
1575 * about 130 new math functions were added to implement the ISO C9x math
1578 * the new header <complex.h> contains definitions of the complex math
1579 functions from ISO C 9X.
1581 * the new header <tgmath.h> defines generic macros to use complex or
1582 real valued functions.
1584 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1586 * Andreas Jaeger provided a test suite for the math library.
1588 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1590 * Ulrich Drepper added character set conversion functions (iconv).
1592 * Optimized string functions have been added.
1594 * The localedata addon is now part of glibc.
1596 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1598 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1599 daemon for NSS (nscd).
1601 Missing a better place here are some numbers on improvements. Under
1602 Linux 2.1.125 un-tar-ing the kernel sources takes
1606 using local files 12.19s 6.88s 22.91s
1608 using NIS 13.92s 8.91s 26.34s
1610 using NIS & nscd 10.37s 7.34s 25.30s
1612 using NIS+ 27.57s 30.37s 640.46s
1614 using NIS+ & nscd 10.25s 7.83s 26.51s
1616 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1618 Keep in mind that non-namelookup related operations dominate above times.
1619 It was just a common complain that using NIS+ unpacking the kernel is
1622 [1] The old nscd implementation is not available anymore since it was
1623 distributed with glibc up to version 2.0.98 and thus is now replaced.
1625 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1627 * Mark Kettenis provided a Hesiod NSS module.
1629 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1630 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1632 * rcmd can now handle netgroups (Dick Streefland).
1634 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1637 * Support for the IPv6 protocol has been added to the socket API, as per the
1638 latest draft standards.
1640 * Support for Linux 2.2 has been added.
1642 * Interface changes relative to the latest 2.0.x release:
1643 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1644 addseverity NEW: Unix98
1645 alphasort64 NEW: LFS
1646 argp_err_exit_status NEW: argp, GNU ext
1647 argp_error NEW: argp, GNU ext
1648 argp_failure NEW: argp, GNU ext
1649 argp_help NEW: argp, GNU ext
1650 argp_parse NEW: argp, GNU ext
1651 argp_program_bug_address NEW: argp, GNU ext
1652 argp_program_version NEW: argp, GNU ext
1653 argp_program_version_hook NEW: argp, GNU ext
1654 argp_state_help NEW: argp, GNU ext
1655 argp_usage NEW: argp, GNU ext
1656 authdes_create NEW: Secure RPC
1657 authdes_getucred NEW: Secure RPC
1658 authdes_pk_create NEW: Secure RPC
1659 backtrace NEW: GNU ext.
1660 backtrace_symbols NEW: GNU ext.
1661 backtrace_symbols_fd NEW: GNU ext.
1663 cacosf NEW: ISO C 9x
1664 cacosh NEW: ISO C 9x
1665 cacoshf NEW: ISO C 9x
1666 cacoshl NEW: ISO C 9x
1667 cacosl NEW: ISO C 9x
1674 casinf NEW: ISO C 9x
1675 casinh NEW: ISO C 9x
1676 casinhf NEW: ISO C 9x
1677 casinhl NEW: ISO C 9x
1678 casinl NEW: ISO C 9x
1680 catanf NEW: ISO C 9x
1681 catanh NEW: ISO C 9x
1682 catanhf NEW: ISO C 9x
1683 catanhl NEW: ISO C 9x
1684 catanl NEW: ISO C 9x
1685 cbc_crypt NEW: Secure RPC
1689 ccoshf NEW: ISO C 9x
1690 ccoshl NEW: ISO C 9x
1696 cimagf NEW: ISO C 9x
1697 cimagl NEW: ISO C 9x
1698 clearerr_locked REMOVED
1699 clntunix_create NEW: sunrpc ext
1701 clog10 NEW: ISO C 9x
1702 clog10f NEW: ISO C 9x
1703 clog10l NEW: ISO C 9x
1713 cprojf NEW: ISO C 9x
1714 cprojl NEW: ISO C 9x
1716 crealf NEW: ISO C 9x
1717 creall NEW: ISO C 9x
1722 csinhf NEW: ISO C 9x
1723 csinhl NEW: ISO C 9x
1726 csqrtf NEW: ISO C 9x
1727 csqrtl NEW: ISO C 9x
1731 ctanhf NEW: ISO C 9x
1732 ctanhl NEW: ISO C 9x
1734 des_setparity NEW: Secure RPC
1735 ecb_crypt NEW: Secure RPC
1736 endutxent NEW: Unix98
1738 exp10f NEW: ISO C 9x
1739 exp10l NEW: ISO C 9x
1743 fattach NEW: STREAMS
1744 fdetach NEW: STREAMS
1748 feclearexcept NEW: ISO C 9x
1749 fegetenv NEW: ISO C 9x
1750 fegetexceptflag NEW: ISO C 9x
1751 fegetround NEW: ISO C 9x
1752 feholdexcept NEW: ISO C 9x
1754 feraiseexcept NEW: ISO C 9x
1755 ferror_locked REMOVED
1756 fesetenv NEW: ISO C 9x
1757 fesetexceptflag NEW: ISO C 9x
1758 fesetround NEW: ISO C 9x
1759 fetestexcept NEW: ISO C 9x
1760 feupdateenv NEW: ISO C 9x
1761 fflush_locked REMOVED
1765 fgets_unlocked NEW: GNU ext.
1766 fileno_locked REMOVED
1778 fputc_locked REMOVED
1779 fputs_unlocked NEW: GNU ext.
1780 fread_unlocked NEW: GNU ext.
1785 fstatvfs NEW: Unix98
1789 ftruncate64 NEW: LFS
1791 fwrite_unlocked NEW: GNU ext.
1792 gai_strerror NEW: IPv6
1796 getchar_locked REMOVED
1798 getdate_err NEW: Unix98
1799 getdate_r NEW: GNU ext.
1801 getnameinfo NEW: IPv6
1802 getnetname NEW: Secure RPC
1803 getpmsg NEW: STREAMS
1804 getpt NEW: Unix98 PTY
1805 getrlimit64 NEW: LFS
1806 getutxent NEW: Unix98
1807 getutxid NEW: Unix98
1808 getutxline NEW: Unix98
1809 glob64 NEW: GNU ext.
1810 globfree64 NEW: GNU ext.
1811 gnu_get_libc_release NEW: GNU ext.
1812 gnu_get_libc_version NEW: GNU ext.
1813 grantpt NEW: Unix98 PTY
1814 host2netname NEW: Secure RPC
1816 iconv_close NEW: iconv
1817 iconv_open NEW: iconv
1818 if_freenameindex NEW: IPv6
1819 if_indextoname NEW: IPv6
1820 if_nameindex NEW: IPv6
1821 if_nametoindex NEW: IPv6
1822 in6addr_any NEW: IPv6
1823 in6addr_loopback NEW: IPv6
1824 inet6_isipv4mapped NEW: IPv6
1825 isastream NEW: STREAMS
1826 iswblank NEW: GNU ext.
1827 key_decryptsession NEW: Secure RPC
1828 key_decryptsession_pk NEW: Secure RPC
1829 key_encryptsession NEW: Secure RPC
1830 key_encryptsession_pk NEW: Secure RPC
1831 key_gendes NEW: Secure RPC
1832 key_get_conv NEW: Secure RPC
1833 key_secretkey_is_set NEW: Secure RPC
1834 key_setnet NEW: Secure RPC
1835 key_setsecret NEW: Secure RPC
1836 llrint NEW: ISO C 9x
1837 llrintf NEW: ISO C 9x
1838 llrintl NEW: ISO C 9x
1839 llround NEW: ISO C 9x
1840 llroundf NEW: ISO C 9x
1841 llroundl NEW: ISO C 9x
1846 lrintf NEW: ISO C 9x
1847 lrintl NEW: ISO C 9x
1848 lround NEW: ISO C 9x
1849 lroundf NEW: ISO C 9x
1850 lroundl NEW: ISO C 9x
1852 makecontext NEW: Unix98
1853 mempcpy NEW: GNU ext.
1856 modify_ldt NEW: kernel
1860 nearbyint NEW: ISO C 9x
1861 nearbyintf NEW: ISO C 9x
1862 nearbyintl NEW: ISO C 9x
1863 netname2host NEW: Secure RPC
1864 netname2user NEW: Secure RPC
1865 nexttoward NEW: ISO C 9x
1866 nexttowardf NEW: ISO C 9x
1867 nexttowardl NEW: ISO C 9x
1871 passwd2des NEW: Secure RPC
1873 pow10f NEW: GNU ext.
1874 pow10l NEW: GNU ext.
1877 printf_size NEW: GNU ext.
1878 printf_size_info NEW: GNU ext.
1879 profil_counter REMOVED
1880 pthread_mutexattr_getkind_np REPLACED
1881 pthread_mutexattr_setkind_np REPLACED
1882 ptsname NEW: Unix98 PTY
1883 ptsname_r NEW: Unix98 PTY
1885 putchar_locked REMOVED
1886 putgrent NEW: GNU ext.
1888 putpmsg NEW: STREAMS
1889 pututxline NEW: Unix98
1893 readdir64_r NEW: LFS
1894 remquo NEW: ISO C 9x
1895 remquof NEW: ISO C 9x
1896 remquol NEW: ISO C 9x
1898 roundf NEW: ISO C 9x
1899 roundl NEW: ISO C 9x
1901 scalbln NEW: ISO C 9x
1902 scalblnf NEW: ISO C 9x
1903 scalblnl NEW: ISO C 9x
1905 sendfile NEW: kernel
1906 setcontext NEW: Unix98
1907 setrlimit64 NEW: LFS
1908 setutxent NEW: Unix98
1910 sigignore NEW: Unix98
1911 sigqueue NEW: POSIX.1b
1912 sigrelse NEW: Unix98
1913 sigset NEW: POSIX.1b
1914 sigtimedwait NEW: POSIX.1b
1915 sigwaitinfo NEW: POSIX.1b
1916 sincos NEW: GNU ext.
1917 sincosf NEW: GNU ext.
1918 sincosl NEW: GNU ext.
1922 strcasestr NEW: GNU ext.
1923 strtoimax NEW: ISO C 9x
1924 strtoumax NEW: ISO C 9x
1925 strverscmp NEW: GNU ext.
1926 svcauthdes_stats NEW: Secure RPC
1927 svcunix_create NEW: sunrpc etx
1928 svcunixfd_create NEW: sunrpc ext
1929 swapcontext NEW: Unix98
1930 tcgetsid NEW: Unix98 PTY
1931 tdestroy NEW: GNU ext.
1932 tgamma NEW: ISO C 9x
1933 tgammaf NEW: ISO C 9x
1934 tgammal NEW: ISO C 9x
1938 truncf NEW: ISO C 9x
1939 truncl NEW: ISO C 9x
1941 unlockpt NEW: Unix98 PTY
1942 updwtmpx NEW: Unix98
1943 user2netname NEW: Secure RPC
1944 utmpxname NEW: Unix98
1945 versionsort NEW: GNU ext.
1946 versionsort64 NEW: GNU ext.
1948 wcscasecmp NEW: GNU ext.
1949 wcsncasecmp NEW: GNU ext.
1950 wcsnlen NEW: GNU ext.
1951 wcstoimax NEW: ISO C 9x
1952 wcstoll NEW: ISO C 9x
1953 wcstoull NEW: ISO C 9x
1954 wcstoumax NEW: ISO C 9x
1956 wordexp NEW: POSIX.2
1957 wordfree NEW: POSIX.2
1958 write_profiling REMOVED
1959 xdecrypt NEW: Secure RPC
1960 xdr_authdes_cred NEW: Secure RPC
1961 xdr_authdes_verf NEW: Secure RPC
1962 xdr_cryptkeyarg NEW: Secure RPC
1963 xdr_cryptkeyarg2 NEW: Secure RPC
1964 xdr_cryptkeyres NEW: Secure RPC
1965 xdr_getcredres NEW: Secure RPC
1966 xdr_key_netstarg NEW: Secure RPC
1967 xdr_key_netstres NEW: Secure RPC
1968 xdr_keybuf NEW: Secure RPC
1969 xdr_keystatus NEW: Secure RPC
1970 xdr_netnamestr NEW: Secure RPC
1971 xdr_sizeof NEW: Secure RPC
1972 xdr_unixcred NEW: sunrpc ext
1973 xencrypt NEW: Secure RPC
1974 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1985 * inet_ntoa is thread-safe
1987 * updwtmp is moved from libutil to libc
1989 * rewrite of cbrt function
1991 * update of timezone data
2005 * add atoll function
2007 * fix complex problems in Berkeley DB code
2009 * fix math functions
2013 * fixed lots of header problems (especially Linux/GNU specific)
2015 * dynamic loader preserves all registers
2017 * Roland McGrath provided support for handling of auxiliary objects in
2018 the ELF dynamic loader.
2020 * support for parallel builds is improved
2024 * GNU extensions are no longer declared by default. To enable them you
2025 must define the macro `_GNU_SOURCE' in your program or compile with
2028 * The library has changed from using GNU ld symbol aliases to using weak
2029 symbols where available. The ELF object file format supports weak
2030 symbols; GNU ld also supports weak symbols in the a.out format. (There
2031 is also now support for other GNU ld extensions in ELF. Use the
2032 `--with-elf' option to configure to indicate you have ELF, and
2033 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2034 of many files which contained only symbol aliases, reducing the size of
2035 the source and the compiled library; many other files were renamed to
2036 less cryptic names previously occupied by the symbol alias files.
2037 There is a new header file <elf.h> for programs which operate on
2038 files in the ELF format.
2040 * Converted to Autoconf version 2, so `configure' has more options.
2041 Run `configure --help' to see the details.
2043 * The library can now be configured to build profiling, highly-optimized
2044 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2045 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2046 `configure' enable building these extra libraries. The shared library is
2047 built by default when using both ELF and GNU ld. When shared libraries
2048 are enabled, the new library `-ldl' is available for arbitrary run-time
2049 loading of shared objects; its interface is defined in <dlfcn.h>. The
2050 new header file <link.h> gives access to the internals of the run-time
2051 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2052 application of same name on other systems and it provides information
2053 about dynamically linked binaries.
2055 * The C library now provides the run-time support code for profiling
2056 executables compiled with `-pg'. Programs can control the profiling code
2057 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2058 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2059 the support for this file format was contributed by David Mosberger-Tang.
2061 * The math code has been replaced with a math library based on fdlibm from
2062 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2063 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2064 functions. The math functions now reside in a separate library, so
2065 programs using them will need to use `-lm' their linking commands.
2067 * John C. Bowman contributed optimized ix87 assembler inline functions.
2069 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2070 mechanism similar to that found in Solaris 2. This is now used for the
2071 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2072 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2073 file controls what services are used for each individual database. This
2074 works by loading shared libraries with names specified in `nsswitch.conf',
2075 so service modules can be changed or added at any time without even
2076 relinking any program. Currently there are the file, db, and NIS based
2077 NSS services available.
2079 * The new functions `strtoq' and `strtouq' parse integer values from
2080 strings, like `strtol' and `strtoul', but they return `long long int' and
2081 `unsigned long long int' values, respectively (64-bit quantities).
2083 * The new functions `strtof' and `strtold' parse floating-point values from
2084 strings, like `strtod', but they return `float' and `long double' values,
2085 respectively (on some machines `double' and `long double' are the same).
2087 * Ulrich Drepper has contributed new implementations of the floating-point
2088 printing and reading code used in the `printf' family of functions and
2089 `strtod', `strtof', and `strtold'. These new functions are perfectly
2090 accurate, and much faster than the old ones.
2092 * The implementation of the POSIX locale model was completely rewritten by
2093 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2094 to compile the POSIX locale definition.
2096 * The former dummy implementations of the strcoll and strxfrm function are
2097 now replaced by fully functional code contributed by Ulrich Drepper. The
2098 collation information comes from the POSIX locale definitions.
2100 * The new header <langinfo.h> defines an interface for accessing
2101 various locale-dependent data (using the locale chosen with `setlocale').
2103 * Ulrich Drepper has contributed a new suite of functions for operation on
2104 wide-character and multibyte-character strings, in <wchar.h>;
2105 and classification and case conversion of wide characters, in <wctype.h>.
2106 These new functions are conforming to the ISO C, Amendement 1 specification.
2108 * There is now a second implementation of the standard I/O library available.
2109 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2110 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2112 * You can now use positional parameter specifications in format strings
2113 for the `printf' and `scanf' families of functions. For example,
2114 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2115 ``Number 6, Mr Jones''. This is mainly useful when providing different
2116 format strings for different languages, whose grammars may dictate
2117 different orderings of the values being printed. To support this
2118 feature, the interface for `register_printf_handler' has changed; see
2119 the header file <printf.h> for details.
2121 * The `printf' and `scanf' families of functions now understand a new
2122 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2123 to group numbers as indicated by the locale; for `scanf' and friends, this
2124 says to accept as valid only a number with all the proper grouping
2125 separators in the right places. In the default "C" locale, numbers are
2126 not grouped; but locales for specific countries will define the usual
2127 conventions (i.e. separate thousands with `,' in the US locale).
2129 * The pgrp functions have been regularized, slightly incompatibly but much
2130 less confusingly. The core functions are now `getpgid' and `setpgid',
2131 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2132 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2133 provided for compatibility. There is no longer an incompatible `getpgrp'
2134 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2136 * The new header file <fts.h> and suite of functions simplify programs that
2137 operate on directory trees. This code comes from 4.4 BSD.
2139 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2140 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2141 NSS scheme used in glibc.
2143 * There is a new malloc debugging hook `__memalign_hook'.
2145 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2146 `unsigned int' in <sys/types.h>. These are for compatibility only and
2147 their use is discouraged.
2149 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2150 done differently, so that it works even without GNU ld.
2152 * New function `euidaccess' checks allowed access to a file like `access',
2153 but using the effective IDs instead of the real IDs.
2155 * The time zone data files have been updated for the latest and greatest
2156 local time conventions of the countries of the world.
2158 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2161 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2162 for formatting floating-point numbers. They are provided only for
2163 compatibility; new programs should use `sprintf' instead. There are
2164 also equivalent function for the `long double' floating-point type and
2165 all functions also exist in a reentrant form.
2167 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2168 functions for maintaining the login-record files (primarily of use to
2169 system programs such as `login'), and convenient functions for
2170 allocating and initializing a pseudo-terminal (pty) device.
2172 * Ulrich Drepper has contributed new support for System V style
2173 shared memory and IPC on systems that support it.
2175 * Ulrich Drepper has contributed several miscellaneous new functions found
2176 in System V: The `hsearch' family of functions provide an effective
2177 implementation of hash tables; `a64l' and `l64a' provide a very simple
2178 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2181 * Ulrich Drepper has contributed new reentrant counterparts for the
2182 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2184 * Ulrich Drepper has contributed new, highly-optimized versions of several
2185 string functions for the i486/Pentium family of processors.
2187 * Ulrich Drepper has updated the Linux-specific code, based largely
2188 on work done in Hongjiu Lu's version of GNU libc for Linux.
2189 The GNU library now supports Linux versions 2.0.10 and later,
2190 using the ELF object file format (i[3456]86-*-linux).
2192 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2194 * David Mosberger-Tang and Richard Henderson have ported the C library
2195 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2196 dynamic linking support for ELF/Alpha.
2198 * Richard Henderson contributed several Alpha optimized assembler function
2199 for arithmetic and string handling.
2201 * Ulrich Drepper has contributed a new set of message catalog functions to
2202 support multiple languages using the <libintl.h> interface, for use with
2203 his new package GNU gettext. Translation volunteers have contributed
2204 catalogs of the library's messages in Spanish, German, and Korean.
2206 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2207 program and the `catgets' function for reading the catalog files it
2208 creates. (The <libintl.h> interface is preferred; we include the
2209 <nl_types.h> interface using `catgets' only for source compatibility with
2210 programs already written to use it.)
2212 * New header file <values.h> gives SVID-compatible names for <limits.h>
2215 * Various new macros, declarations, and small header files for compatibility
2218 * New function `group_member' is a convenient way to check if a process has
2219 a given effective group ID.
2221 * When using GCC 2.7 and later, the socket functions are now declared in a
2222 special way so that passing an argument of type `struct sockaddr_in *',
2223 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2224 `struct sockaddr *' type, does not generate a type-clash warning.
2226 * New function `error' declared in header file <error.h> is a convenient
2227 function for printing error messages and optionally exiting; this is the
2228 canonical function used in GNU programs. The new functions `err', `warn',
2229 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2230 doing the same thing.
2232 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2233 POSIX.2 `glob' function to do ~ and {...} expansion.
2235 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2236 `clearenv' which is used in POSIX.9 is also available.
2238 * New function `getsid' returns session ID number on systems that support it.
2240 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2241 files <db.h> and <mpool.h> provide a rich set of functions for several
2242 types of simple databases stored in memory and in files, and <ndbm.h> is
2243 an old `ndbm'-compatible interface using the `db' functions. Link with
2244 `-ldb' to get these functions.
2246 * New macro `strdupa' copies a string like `strdup', but uses local stack
2247 space from `alloca' instead of dynamic heap space from `malloc'.
2249 * New function `strnlen' is like `strlen' but searches only a given maximum
2250 number of characters for the null terminator. `stpncpy', `strndup' and
2251 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2254 * New function `statfs' in header <sys/statfs.h>.
2256 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2257 provide convenient functions for operating on blocks of null-terminated
2260 * A new suite of functions in <utmp.h> handle all the details of reading
2261 and writing the utmp file.
2263 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2266 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2267 completely POSIX compliant and also implemented the extended functionality
2268 to handle alternate digit representation and alternate era date formats.
2270 * Ulrich Drepper provided an implementation of the `strptime' function
2271 defined in XPG4.2 which transforms a string into a `struct tm' value.
2273 * Paul Eggert provided the tzselect shell script as part of the timezone
2274 code. The shell script makes it easy to select the correct timezone
2277 * The implementation of the malloc family of functions is completely replaced
2278 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2279 The implementation uses the mmap function (if available) and it is
2280 optimized for the use in multi threaded programs.
2282 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2283 functions. This new functionality is usable by specifying a special
2284 salt string and it is compatible with implementation on *BSD systems.
2286 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2287 `getsubopt' to handle second level command line options, `bsd_signal'
2288 to access BSD style `signal' functionality, the obsolete `regexp' style
2291 * the `lchown' function is available on system which support this
2294 * The implementation of the shadow password handling function was contributed
2297 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2299 * POSIX.1g support was added. The <sys/select.h> header is available,
2300 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2301 implementation of `getaddrinfo'.
2305 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2307 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2308 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2310 * The new function `daemon' from 4.4 BSD is useful for server programs that
2311 want to put themselves in the background.
2313 * Joel Sherrill has contributed support for several standalone boards that
2314 run without an operating system.
2316 * `printf', `scanf' and friends now accept a `q' type modifier for long
2317 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2319 * All of the code taken from BSD (notably most of the math and networking
2320 routines) has been updated from the BSD 4.4-Lite release.
2322 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2324 * The new functions `getdomainname' and `setdomainname' fetch or change the
2325 YP/NIS domain name. These are system calls which exist on systems which
2328 * The time zone data files have been updated for the latest international
2331 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2332 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2336 * The C library now includes support for Sun RPC, from Sun's free
2337 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2338 are included. (There is still no support for YP.)
2340 * Tom Quinn has contributed a port of the C library to SGI machines running
2341 Irix 4 (mips-sgi-irix4).
2343 * The new `lockf' function is a simplified interface to the locking
2344 facilities of `fcntl', included for compatibility.
2346 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2348 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2350 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2353 * The error message printed by `assert' for a failed assertion now includes
2354 the name of the program (if using GNU ld) and the name of the calling
2355 function (with versions of GCC that support this).
2357 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2359 * The library now includes the <sys/mman.h> header file and memory
2360 management functions `mmap', `munmap', `mprotect', `msync', and
2361 `madvise', on systems that support those facilities.
2363 * The interface for `mcheck' has changed slightly: the function called to
2364 abort the program when an allocation inconsistency is detected now takes
2365 an argument that indicates the type of failure. The new function
2366 `mprobe' lets you request a consistency check for a particular block at
2367 any time (checks are normally done only when you call `free' or `realloc'
2370 * It is now possible to easily cross-compile the C library, building on one
2371 system a library to run on another machine and/or operating system. All
2372 you need to do is set the variable `HOST_CC' in `configparms' to the
2373 native compiler for programs to run on the machine you are building on (a
2374 few generator programs are used on Unix systems); set `CC' to the
2377 * The new function `fexecve' (only implemented on the GNU system) executes
2378 a program file given a file descriptor already open on the file.
2382 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2383 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2385 * You can set the variable `libprefix' in `configparms' to specify a prefix
2386 to be prepended to installed library files; this makes it easy to install
2387 the GNU C library to be linked as `-lgnuc' or whatever.
2389 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2390 copies a limited number of characters from a string, and returns the
2391 address of the last character written.
2393 * You no longer need to check for whether the installed `stddef.h' is
2394 compatible with the GNU C library. configure now checks for you.
2396 * You can now define a per-stream `fileno' function to convert the
2397 stream's cookie into an integral file descriptor.
2399 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2400 allocates zero bytes of storage, and returns a unique pointer which
2401 you can pass to `realloc' or `free'. The behavior is undefined if
2402 you dereference this pointer.
2404 * The C library now runs on Sony NEWS m68k machines running either
2405 NewsOS 3 or NewsOS 4.
2407 * The new `syscall' function is a system-dependent primitive function
2408 for invoking system calls. It has the canonical behavior on Unix
2409 systems, including unreliable return values for some calls (such as
2410 `pipe', `fork' and `getppid').
2412 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2413 to `EAGAIN', which is the preferred name. On systems whose kernels
2414 use two distinct codes, the C library now translates EWOULDBLOCK to
2415 EAGAIN in every system call function.
2419 * The GNU C Library Reference Manual is now distributed with the library.
2420 `make dvi' will produce a DVI file of the printed manual.
2421 `make info' will produce Info files that you can read on line using C-h i
2422 in Emacs or the `info' program.
2423 Please send comments on the manual to bug-glibc-manual@gnu.org.
2425 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2427 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2429 * Jason Merrill has contributed a port to the Sequent Symmetry running
2430 Dynix version 3 (i386-sequent-dynix).
2432 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2433 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2435 * New function `memory_warnings' lets you arrange to get warnings when
2436 malloc is running out of memory to allocate, like Emacs gives you.
2438 * The C library now contains the relocating allocator used in Emacs 19 for
2439 its editing buffers. This allocator (ralloc) minimizes allocation
2440 overhead and fragmentation by moving allocated regions around whenever it
2441 needs to. You always refer to a ralloc'd region with a "handle" (a
2442 pointer to a pointer--an object of type `void **').
2444 * There is a new `printf' format: `%m' gives you the string corresponding
2445 to the error code in `errno'.
2447 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2448 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2449 pass, the `a' modifier says to fill in a `char **' you pass with a
2452 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2453 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2454 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2456 * `mkstemp' is a traditional Unix function to atomically create and open a
2457 uniquely-named temporary file.
2461 * The standard location for the file that says what the local timezone is
2462 has changed again. It is now `/usr/local/etc/localtime' (or more
2463 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2465 * The distribution no longer contains any files with names longer than 14
2468 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2469 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2471 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2475 * The configuration process has changed quite a bit. The `configure'
2476 script is now used just like the configuration scripts for other GNU
2477 packages. The `sysdeps' directory hierarchy is much rearranged.
2478 The file `INSTALL' explains the new scheme in detail.
2480 * The header files no longer need to be processed into ANSI C and
2481 traditional C versions. There is just one set of files to install, and
2482 it will work with ANSI or old C compilers (including `gcc -traditional').
2484 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2485 MIPS DECStation running Ultrix 4.
2487 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2488 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2489 made itself into a shared library.
2491 * Yet further improved support for the i386, running 4.3 BSD-like systems
2492 (such as Mach 3 with the Unix single-server), or System V.
2494 * New function `strncasecmp' to do case-insensitive string comparison
2495 with limited length.
2497 * New function `strsep' is a reentrant alternative to `strtok'.
2499 * New functions `scandir' and `alphasort' for searching directories.
2501 * New function `setenv' is a better interface to `putenv'.
2503 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2504 function for traversing a directory tree.
2506 * The GNU obstack package is now also part of the C library.
2507 The new function `open_obstack_stream' creates a stdio stream that
2508 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2509 formatted output directly to an obstack.
2511 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2512 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2514 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2516 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2517 things to your strings.
2519 * There are some new test programs: test-fseek, testmb, and testrand.
2521 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2522 These ports are not finished, but are a good starting place for really
2523 supporting those systems.
2525 * `/etc/localtime' is now the standard location for the file that says what
2526 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2527 This follows the general principle that `/etc' is the place for all local
2528 configuration files.
2530 * The C library header files now use `extern "C"' when used by the C++
2531 compiler, so the C library should now work with C++ code.
2533 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2534 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2537 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2538 function which uses the `merge sort' algorithm, and is said to be
2539 significantly faster than the old GNU `qsort' function. Merge sort is
2540 now the standard `qsort' function. The new algorithm can require a lot
2541 of temporary storage; so, the old sorting function is called when the
2542 required storage is not available.
2544 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2545 provides the Unix `crypt' function, plus some other entry points.
2547 * The code and header files taken from 4.4 BSD have been updated with the
2548 latest files released from Berkeley.
2550 ----------------------------------------------------------------------
2551 Copyright information:
2553 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2555 Permission is granted to anyone to make or distribute verbatim copies
2556 of this document as received, in any medium, provided that the
2557 copyright notice and this permission notice are preserved,
2558 thus giving the recipient permission to redistribute in turn.
2560 Permission is granted to distribute modified versions
2561 of this document, or of portions of it,
2562 under the above conditions, provided also that they
2563 carry prominent notices stating who last changed them.
2566 version-control: never
projects / platform / upstream / linaro-glibc.git / blob