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 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
13 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16198, 16284,
14 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516, 16532,
15 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609, 16610,
16 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642, 16648,
17 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695, 16701,
18 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740, 16743,
19 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796, 16799,
20 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854, 16876,
21 16877, 16878, 16882, 16885, 16888, 16890, 16912, 16915, 16916, 16917,
22 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965, 16966, 16967,
23 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031, 17042, 17048,
24 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079, 17084, 17086,
25 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153, 17213.
27 * Reverted change of ABI data structures for s390 and s390x:
28 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
29 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
30 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
31 are preserved pointing straight to the same implementation as the old ones.
32 Given that, new callers wil simply provide a too-big buffer to these
33 functions. Any applications/libraries out there that embed jmp_buf or
34 ucontext_t in an ABI-relevant data structure that have already been rebuilt
35 against 2.19 headers will have to rebuilt again. This is necessary in any
36 case to revert the breakage in their ABI caused by the glibc change.
38 * Support for file description locks is added to systems running the
39 Linux kernel. The standard file locking interfaces are extended to
40 operate on file descriptions, not file descriptors, via the use of
41 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
42 are associated with an open file instead of a process.
44 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
46 * The minimum Linux kernel version that this version of the GNU C Library
47 can be used with is 2.6.32.
49 * Running the testsuite no longer terminates as soon as a test fails.
50 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
51 with PASS or FAIL lines for individual tests. A summary of the results is
52 printed, including a list of failing lists, and "make check" exits with
53 error status if there were any unexpected failures. "make check
54 stop-on-test-failure=y" may be used to keep the old behavior.
56 * The am33 port, which had not worked for several years, has been removed
59 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
60 supported; they now act the same as _DEFAULT_SOURCE (but generate a
61 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
62 conflicted with POSIX (support for which was removed in 2.19), the
63 interfaces those macros enabled remain available when compiling with
64 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
67 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
69 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
70 This may improve lock scaling of existing programs on TX capable systems.
71 The lock elision code is only built with --enable-lock-elision=yes and
72 then requires a GCC version supporting the TX builtins. With lock elision
73 default mutexes are elided via __builtin_tbegin, if the cpu supports
74 transactions. By default lock elision is not enabled and the elision code
77 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
78 copy the path argument. This allowed programs to cause posix_spawn to
79 deference a dangling pointer, or use an unexpected pathname argument if
80 the string was modified after the posix_spawn_file_actions_addopen
83 * All supported architectures now use the main glibc sysdeps directory
84 instead of some being in a separate "ports" directory (which was
85 distributed separately before glibc 2.17).
87 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
88 On configurations that support it (all Linux configurations), it's now
89 used regardless of the --enable-add-ons switch to configure. It is no
90 longer possible to build such configurations without pthreads support.
92 * Locale names, including those obtained from environment variables (LANG
93 and the LC_* variables), are more tightly checked for proper syntax.
94 setlocale will now fail (with EINVAL) for locale names that are overly
95 long, contain slashes without starting with a slash, or contain ".." path
96 components. (CVE-2014-0475) Previously, some valid locale names were
97 silently replaced with the "C" locale when running in AT_SECURE mode
98 (e.g., in a SUID program). This is no longer necessary because of the
103 * The following bugs are resolved with this release:
105 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
106 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
107 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
108 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
109 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
110 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
111 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
112 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
113 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
114 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
115 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
116 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
117 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
118 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
119 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
120 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
121 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
122 16431, 16453, 16474, 16506, 16510, 16529
124 * Slovenian translations for glibc messages have been contributed by the
125 Translation Project's Slovenian team of translators.
127 * The public headers no longer use __unused nor __block. This change is to
128 support compiling programs that are derived from BSD sources and use
129 __unused internally, and to support compiling with Clang's -fblock
130 extension which uses __block.
132 * CVE-2012-4412 The strcoll implementation caches indices and rules for
133 large collation sequences to optimize multiple passes. This cache
134 computation may overflow for large collation sequences and may cause a
135 stack or buffer overflow. This is now fixed to use a slower algorithm
136 which does not use a cache if there is an integer overflow.
138 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
139 rules for large collation sequences to optimize multiple passes and falls
140 back to alloca if malloc fails, resulting in a possible stack overflow.
141 The implementation now falls back to an uncached collation sequence lookup
144 * CVE-2013-4788 The pointer guard used for pointer mangling was not
145 initialized for static applications resulting in the security feature
146 being disabled. The pointer guard is now correctly initialized to a
147 random value for static applications. Existing static applications need
148 to be recompiled to take advantage of the fix (bug 15754).
150 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
151 to the d_name member of struct dirent, or omit the terminating NUL
152 character. (Bugzilla #14699).
154 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
155 aligned_alloc functions could allocate too few bytes or corrupt the
156 heap when passed very large allocation size values (Bugzilla #15855,
159 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
160 for AF_INET6 has been fixed (Bugzilla #16072).
162 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
163 pap_CW, quz_PE, the_NP.
165 * Substantially revised locales: gd_GB, ht_HT
167 * The LC_ADDRESS field was updated to support country_car for almost all
170 * ISO 1427 definitions were updated.
172 * ISO 3166 definitions were updated.
174 * The localedef utility now supports --big-endian and --little-endian
175 command-line options to generate locales for a different system from that
176 for which the C library was built.
178 * Binary locale files now only depend on the endianness of the system for
179 which they are generated and not on other properties of that system. As a
180 consequence, binary files generated with new localedef may be incompatible
181 with old versions of the GNU C Library, and binary files generated with
182 old localedef may be incompatible with this version of the GNU C Library,
183 in the following circumstances:
185 + Locale files may be incompatible on m68k systems.
187 + Locale archive files (but not separate files for individual locales) may
188 be incompatible on systems where plain "char" is signed.
190 * The configure option --disable-versioning has been removed. Builds with
191 --disable-versioning had not worked for several years.
193 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
194 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
196 * SystemTap probes for malloc have been introduced.
198 * SystemTap probes for slow multiple precision fallback paths of
199 transcendental functions have been introduced.
201 * Support for powerpc64le has been added.
203 * The soft-float powerpc port now supports e500 processors.
205 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
207 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
208 set of header declarations that are enabled by default, even when other
209 feature test macros or compiler options such as -std=c99 would otherwise
210 disable some of those declarations.
212 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
213 conflict with POSIX. The libbsd-compat library (which was a dummy library
214 that did nothing) has also been removed.
216 * Preliminary documentation about Multi-Thread, Async-Signal and
217 Async-Cancel Safety has been added.
219 * Change of ABI data structures for s390 and s390x:
220 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
221 allow for future hardware extensions. All library functions that accept or
222 return these structures were versioned in order to provide backwards
223 compatibility with existing code. However, not all cases can be handled
224 with interface versioning. If an application embeds either structure into
225 another structure and that structure is passed to another compilation unit
226 which expects the newer larger-sized object then any access to the new
227 fields will result in undefined behaviour. Similarly any access to fields
228 that were moved by the enlarging of the structures will cause undefined
229 behaviour. To fix the undefined behaviour all objects that are part of the
230 final in-memory image must agree on the size of structures, and this may
231 require recompilation.
235 * The following bugs are resolved with this release:
237 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
238 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
239 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
240 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
241 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
242 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
243 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
244 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
245 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
246 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
247 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
248 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
249 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
252 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
253 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
254 Distributions can re-enable building and using pt_chown via the new configure
255 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
256 considerable security risks and should only be used if the distribution
257 understands and accepts the risks.
259 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
262 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
263 fixed (Bugzilla #15330).
265 * Add support for calling C++11 thread_local object destructors on thread
266 and program exit. This needs compiler support for offloading C++11
267 destructor calls to glibc.
269 * Improved worst case performance of libm functions with double inputs and
272 * Support for priority inherited mutexes in pthread condition variables on
273 non-x86 architectures.
275 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
277 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
279 * Optimized string functions for ARM. Implemented by Will Newton and
282 * Optimized libm functions for SPARC. Implemented by David S. Miller.
284 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
287 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
288 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
290 * Added a benchmark framework to track performance of functions in glibc.
292 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
293 It is based on draft TS 18661 and currently enabled as a GNU extension.
295 * On Linux, the clock function now uses the clock_gettime system call
296 for improved precision, rather than old times system call.
298 * Added support for version-3 tz format files. This is needed when using
299 the tz database release 2013e or later, and affects a few unusual cases --
300 currently only TZ='America/Godthab' for time stamps after 2037.
302 * Added new API functions pthread_getattr_default_np and
303 pthread_setattr_default_np to get and set the default pthread
304 attributes of a process.
306 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
307 This may improve lock scaling of existing programs on TSX capable systems.
308 When the --enable-lock-elision=yes parameter is specified at configure
309 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
312 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
313 availability). Implemented by Ryan S. Arnold.
315 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
319 * The following bugs are resolved with this release:
321 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
322 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
323 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
324 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
325 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
326 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
327 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
328 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
329 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
330 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
331 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
332 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
333 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
334 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
335 14879, 14889, 14893, 14898, 14914.
337 * Optimization of memcpy for MIPS.
339 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
340 EMFILE has been fixed (Bugzilla #14889).
342 * The add-on ports collection is now distributed in the "ports" subdirectory
343 of the main GNU C Library distribution, rather than separately.
345 * Port to ARM AArch64 contributed by Linaro.
347 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
348 Optimized versions of memcpy, memset, and memcmp added for System z10 and
350 Implemented by Andreas Krebbel.
352 * The new function secure_getenv allows secure access to the environment,
353 returning NULL if running in a SUID/SGID process. This function replaces
354 the internal function __secure_getenv.
356 * SystemTap static probes have been added into the dynamic linker.
357 Implemented by Gary Benson.
359 * Optimizations of string functions strstr, strcasestr and memmem.
360 Implemented by Maxim Kuvyrkov.
362 * The minimum Linux kernel version that this version of the GNU C Library
363 can be used with is 2.6.16.
365 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
366 powerpc POWER7. Implemented by Will Schmidt.
368 * New configure option --disable-nscd builds the C library such that it
369 never attempts to contact the Name Service Caching Daemon (nscd).
370 New configure option --disable-build-nscd avoids building nscd itself;
371 this is the default if --disable-nscd is used.
373 * Improved support for cross-compilation, including cross-testing and
374 bootstrap builds without a previously built glibc.
376 * Several testsuite tests are now able to test multiple IFUNC variants of an
377 interface, rather than just testing the one that would be chooen by
380 * New configure options --with-bugurl and --with-pkgversion, for
381 distributors to use to embed their bug-reporting and package version
382 information in --help and --version output.
384 * The ttyname and ttyname_r functions on Linux now fall back to searching for
385 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
386 allows creation of chroots without the procfs mounted on /proc.
388 * The `crypt' function now fails if passed salt bytes that violate the
389 specification for those values. On Linux, the `crypt' function will
390 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
391 enabled, and fail on encrypted strings using the MD5 or DES algorithm
392 when the mode is enabled.
394 * The `clock_*' suite of functions (declared in <time.h>) is now available
395 directly in the main C library. Previously it was necessary to link with
396 -lrt to use these functions. This change has the effect that a
397 single-threaded program that uses a function such as `clock_gettime' (and
398 is not linked with -lrt) will no longer implicitly load the pthreads
399 library at runtime and so will not suffer the overheads associated with
400 multi-thread support in other code such as the C++ runtime library.
402 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
407 * The following bugs are resolved with this release:
409 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
410 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
411 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
412 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
413 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
414 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
415 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
416 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
417 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
418 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
419 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
420 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
421 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
422 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
423 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
424 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
425 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
426 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
427 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
428 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
429 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
430 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
433 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
434 configuring glibc with:
435 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
436 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
437 Implemented by H.J. Lu.
441 + define static_assert
443 + do not declare gets
445 + declare at_quick_exit and quick_exit also for ISO C11
447 + aligned_alloc. NB: The code is deliberately allows the size parameter
448 to not be a multiple of the alignment. This is a moronic requirement
449 in the standard but it is only a requirement on the caller, not the
454 + uchar.h support added
456 + CMPLX, CMPLXF, CMPLXL added
458 Implemented by Ulrich Drepper.
460 * Support for the IA-64 has been moved to ports.
462 * Remove support for anything but ELF binary format
464 * Checking versions of poll, ppoll added.
465 Implemented by Ulrich Drepper.
467 * More generic and 64-bit performance optimizations to math functions.
468 Implemented by Ulrich Drepper.
470 * New configure option --enable-obsolete-rpc makes the deprecated RPC
471 headers and functions available at compile time as they were before
472 version 2.14. This option will be removed at some time in the future
473 after the TI-RPC library becomes fully sufficient for the needs of
474 existing applications.
476 * Compatibility code for Linux kernel versions before 2.4 has been removed.
477 Note that glibc is not expected to work with any Linux kernel version
480 * New header <sys/auxv.h> and function getauxval allowing easy access to
481 the AT_* key-value pairs passed from the Linux kernel. The header also
482 defines the HWCAP_* bits associated with the AT_HWCAP key.
484 * New locales: mag_IN
486 * New configure option --enable-systemtap builds SystemTap static probes
487 into libc for setjmp and longjmp and into libpthread for various operations.
488 So far the setjmp/longjmp probes and some of the libpthread probes are
489 provided only for i*86 and x86_64.
490 Implemented by Roland McGrath and Rayson Ho.
492 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
494 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
497 * More optimized functions for SPARC. Implemented by David S. Miller.
499 * Improved support for cross-compilation, especially bootstrap builds
500 without a previously built glibc.
502 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
503 Chris Metcalf from Tilera.
505 * Support for the old ARM ABI has been removed from ports. Only the EABI is
506 now supported for ARM processors.
508 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
509 as the name of the dynamic linker, to distinguish it from the
510 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
512 * Support for CRIS has been removed from ports.
514 * A new class of installed header has been documented for low-level
515 platform-specific functionality. PowerPC added the first instance with a
516 function to provide time base register access. Contributed by Tulio
517 Magno Quites Machado Filho.
519 * ix86 configurations now install header files that are consistent with
520 what x86-64 configurations install. These same header files can be used
521 for -m32, -m64, or -mx32 builds.
522 Contributed by H.J. Lu.
524 * Math library bug fixes. A thorough audit of all open math library bugs was
525 conducted by Joseph Myers. Significant progress was made on many math
526 library bugs resulting in more accurate exceptions and function results.
527 Many thanks to all those that contributed including Andreas Jaeger for his
528 patch review and work on the x87 trigonometric instruction issues.
530 * Timezone data is no longer installed. Timezone-related binaries and scripts
531 will continue to be installed. Users should obtain their timezone data from
532 their distribution provider or from the tzdata package at
533 <ftp://munnari.oz.au/pub/>.
537 * The following bugs are resolved with this release:
539 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
540 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
541 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
542 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
543 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
544 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
545 13484, 13506, 13515, 13523, 13524, 13538, 13540
547 * New program pldd to list loaded object of a process
548 Implemented by Ulrich Drepper.
550 * Add nss_db support back to glibc. No more dependency on Berkeley db
551 and support for initgroups lookups.
552 Implemented by Ulrich Drepper.
554 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
555 Contributed by HJ Lu.
557 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
558 Contributed by HJ Lu.
560 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
561 on x86-32 and x86-64.
562 Contributed by Liubov Dmitrieva.
564 * Optimized strchr and strrchr for SSE on x86-32.
565 Contributed by Liubov Dmitrieva.
567 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
568 for x86-64 and x86-32.
569 Contributed by Liubov Dmitrieva.
571 * New interfaces: scandirat, scandirat64
572 Implemented by Ulrich Drepper.
574 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
575 Implemented by Ulrich Drepper.
577 * nscd now also caches the netgroup database.
578 Implemented by Ulrich Drepper.
580 * Integrate libm with gcc's -ffinite-math-only option.
581 Implemented by Ulrich Drepper.
583 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
584 to math functions. Implemented by Ulrich Drepper.
586 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
587 Implemented by Ulrich Drepper.
589 * New Linux interfaces: process_vm_readv, process_vm_writev
591 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
592 Implemented by Ulrich Drepper.
594 * Optimized nearbyint and strcasecmp for PPC.
595 Implemented by Adhemerval Zanella.
597 * New locales: bho_IN, unm_US, es_CU, ta_LK
601 * The following bugs are resolved with this release:
603 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
604 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
605 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
606 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
607 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
608 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
609 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
610 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
611 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
612 12795, 12811, 12813, 12814, 12841
614 * The RPC implementation in libc is obsoleted. Old programs keep working
615 but new programs cannot be linked with the routines in libc anymore.
616 Programs in need of RPC functionality must be linked against TI-RPC.
617 The TI-RPC implementation is IPv6 enabled and there are other benefits.
619 Visible changes of this change include (obviously) the inability to link
620 programs using RPC functions without referencing the TI-RPC library and the
621 removal of the RPC headers from the glibc headers.
622 Implemented by Ulrich Drepper.
624 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
625 syncfs, setns, sendmmsg
627 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
628 yue_HK, lij_IT, mhr_RU
630 * New encodings: CP770, CP771, CP772, CP773, CP774
632 * New program sotruss to trace calls through PLTs
633 Implemented by Ulrich Drepper.
635 * The malloc hook implementation is marked deprecated and will be removed
636 from the default implementation in the next version. The design never
637 worked ever since the introduction of threads. Even programs which do
638 not create threads themselves can use multiple threads created internally.
642 * The following bugs are resolved with this release:
644 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
645 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
646 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
647 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
650 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
652 * POWER7 optimizations: memset, memcmp, strncmp
654 * New optimized string functions for x86-64: strnlen (SSE2),
655 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
656 Implemented by Ulrich Drepper.
660 * The following bugs are resolved with this release:
662 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
663 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
664 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
665 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
666 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
667 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
668 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
669 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
671 * New interfaces: pthread_getname_np, pthread_setname_np
673 * New Linux interface: recvmmsg
675 * STT_GNU_IFUNC implemented for Sparc by David Miller.
677 * The dynamic linker now recognizes supported ABI versions from the
678 EI_ABIVERSION field in the ELF header.
679 Implemented by Ulrich Drepper.
681 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
682 will not be used to fill in password fields in the passwd.byname replies.
683 Instead it is used to synthesize the shadow.byname table, should it be
684 missing. This is a useful mode in some installations involving Solaris.
685 Implemented by Ulrich Drepper.
687 * New locales: kok_IN, sq_MK, cv_RU
691 * The following bugs are resolved with this release:
693 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
694 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
695 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
696 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
697 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
698 10789, 10817, 10823, 10840, 10847
700 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
702 Implemented by Ulrich Drepper.
704 * Checking version of longjmp added that fails if an uninitialized stack
705 frame would be created. Implemented by Ulrich Drepper.
707 * STT_GNU_IFUNC is now supported in static executables.
708 Implemented by H.J. Lu.
710 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
712 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
713 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
714 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
715 Contributed by H.J. Lu.
717 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
718 Implemented by Ulrich Drepper.
720 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
722 Contributed by H.J. Lu.
724 * Support for fma instruction in AVX on x86-64.
725 Implemented by H.J. Lu and Ulrich Drepper.
727 * AVX support in x86-64 auditing support in ld.so.
728 Implemented by H.J. Lu.
730 * STB_GNU_UNIQUE support added.
731 Implemented by Ulrich Drepper.
733 * Implement second fallback mode for optimized DNS lookup for even more
734 broken environments. If two requests from the same port are not
735 handled correctly close the socket and open a new one before sending
736 the second request. The 'single-request-reopen' option in /etc/resolv.conf
737 can be used to select this mode right away, instead of rediscovering the
738 necessity is every process again.
739 Implemented by Ulrich Drepper.
741 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
742 Implemented by Adam Tkac.
744 * Optimized iconv conversions for S390x.
745 Implemented by Andreas Krebbel.
747 * Using condvars with PI mutexes is now more efficient due to kernel
748 support for requeueing to PI futexes. NPTL support added for x86-64.
749 Implemented by Ulrich Drepper.
751 * New locales: ps_AF, my_MM
755 * The following bugs are resolved with this release:
757 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
758 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
759 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
760 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
761 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
763 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
764 Implemented by Ulrich Drepper.
766 * New Linux interfaces: accept4, fallocate, fallocate64.
767 Implemented by Ulrich Drepper.
769 * Correct declarations of string function when used in C++ code. This
770 could lead to compile errors for invalid C++ code.
772 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
775 * New POSIX 2008 interface: psiginfo
776 Implemented by Ulrich Drepper.
778 * New ISO C++1x interfaces: quick_exit, at_quick_exit
779 Implemented by Ulrich Drepper.
781 * Support for selecting between multiple function definitions at runtime
782 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
784 * The libcrypt library can now use the hash function implementations in
785 NSS. Implemented by Ulrich Drepper.
787 * The malloc implementation can be compiled to be less memory efficient
788 but higher performing in multi-threaded programs.
789 Implemented by Ulrich Drepper.
791 * New locales: nan_TW@latin, ks_IN
793 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
794 Implemented by Ulrich Drepper.
796 * Extended printf hook support. It is possible to use user-defined types
797 and extend existing format specifiers.
798 Implemented by Ulrich Drepper.
800 * Handling for group shadow files has been added.
801 Implemented by Ulrich Drepper.
803 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
804 servers (the case, e.g., for some people using the built-in DNS
805 server in ADSL modems/routers). There is a once-per-process timeout
806 in case of a broken server. To avoid it, users can run nscd or put
807 'options single-request' in /etc/resolv.conf.
808 Implemented by Ulrich Drepper.
812 * The following bugs are resolved with this release:
814 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
815 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
816 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
817 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
818 6968, 6974, 6980, 6995, 7008, 7009, 7029
820 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
821 up at the same time. Implemented by Ulrich Drepper.
823 * TLS descriptors for LD and GD on x86 and x86-64.
824 Implemented by Alexandre Oliva.
826 * getaddrinfo now handles DCCP and UDPlite.
827 Implemented by Ulrich Drepper.
829 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
830 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
831 Implemented by Ulrich Drepper.
833 * New implementation of memmem, strstr, and strcasestr which is O(n).
834 Implemented by Eric Blake.
836 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
838 * Implement "e" option for popen to open file descriptor with the
839 close-on-exec flag set. Implemented by Ulrich Drepper.
841 * Implement "b" mode for fmemopen. In this mode writes writes don't
842 implicitly add a NUL byte and seeks from the end of the buffer really
843 use the buffer end, not the string length as the basis.
844 Implemented by Ulrich Drepper.
846 * Many functions, exported and internal, now atomically set the close-on-exec
847 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
849 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
851 Implemented by Pravin Satpute.
853 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
857 * The following bugs are resolved with this release:
859 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
860 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
861 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
862 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
863 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
864 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
865 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
867 * New locales: bo_CN, bo_IN, shs_CA.
869 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
871 * Sorting rules for some Indian languages (Devanagari and Gujarati).
872 Implemented by Pravin Satpute.
874 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
876 * nscd caches now all timeouts for DNS entries
877 Implemented by Ulrich Drepper.
879 * nscd is more efficient and wakes up less often.
880 Implemented by Ulrich Drepper.
882 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
883 vdprintf, and obstack_vprintf.
884 Implemented by Jakub Jelinek.
886 * Faster memset for x86-64.
887 Implemented by Harsha Jagasia and H.J. Lu.
889 * Faster memcpy on x86.
890 Implemented by Ulrich Drepper.
892 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
893 Implemented by Ulrich Drepper.
895 * Faster sqrt and sqrtf implemention for some PPC variants.
896 Implemented by Steven Munroe.
900 * The following bugs are resolved with this release:
902 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
903 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
904 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
905 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
906 5071, 5103, 5104, 5112, 5113, 5184, 5186
908 * More checking functions: fread, fread_unlocked, open*, mq_open.
909 Implemented by Jakub Jelinek and Ulrich Drepper.
911 * Extend fortification to C++. Implemented by Jakub Jelinek.
913 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
914 by not recognizing 'a' as a modifier when those specs are requested.
915 Implemented by Jakub Jelinek.
917 * PPC optimizations to math and string functions.
918 Implemented by Steven Munroe.
920 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
921 options to be passed. Implemented by Ulrich Drepper.
923 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
925 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
926 Implemented by Ulrich Drepper.
928 * Handle private futexes in the NPTL implementation.
929 Implemented by Jakub Jelinek and Ulrich Drepper.
931 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
932 Implemented by Roland McGrath and Ulrich Drepper.
934 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
936 * SHA-256 and SHA-512 based password encryption.
937 Implemented by Ulrich Drepper.
939 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
940 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
943 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
944 Implemented by Ulrich Drepper.
948 * The following bugs are resolved with this release:
950 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
951 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
952 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
953 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
954 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
955 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
956 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
959 * New Linux interfaces: epoll_pwait, sched_getcpu.
961 * New generic interfaces: strerror_l.
963 * nscd can now cache the services database. Implemented by Ulrich Drepper.
967 * The following bugs are resolved with this release:
969 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
970 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
971 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
972 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
973 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
974 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
975 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
976 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
977 3225, 3251, 3252, 3253, 3273
979 * For Linux, the sorting of addresses returned by getaddrinfo now also
980 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
981 Implemented by Ulrich Drepper.
983 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
984 Implemented by Ulrich Drepper.
986 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
988 * New iconv module for MIK. Contributed by Alexander Shopov.
990 * For sites with broken group and/or passwd database, the auto-propagate
991 option of nscd can prevent creating ID lookup entries from the results
992 of a name lookup and vice versa. This usually is no problem but some
993 site might have problems with the default behavior.
994 Implemented by Ulrich Drepper.
996 * Iterating over entire database in NIS can be slow. With the
997 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
998 to trade time for memory. The entire database will be read at once.
999 Implemented by Ulrich Drepper.
1001 * The interfaces introduced in RFC 3542 have been implemented by
1004 * Support for the new ELF hash table format was added by Ulrich Drepper.
1006 * Support for priority inheritance mutexes added by Jakub Jelinek and
1009 * Support for priority protected mutexes added by Jakub Jelinek.
1011 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1012 or_IN, csb_PL, fy_NL, sr_ME.
1016 * More overflow detection functions.
1018 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1019 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1021 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1022 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1023 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1024 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1025 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1026 by Masahide Washizawa.
1028 * It is now possible to install audit libraries for the dynamic linker using
1029 LD_AUDIT. Implemented by Ulrich Drepper.
1031 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1032 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1033 For a libc and libpthread that works well on Linux 2.4 kernels, we
1034 recommend using the stable 2.3 branch.
1036 * The new function open_wmemstream acts like open_memstream,
1037 but uses a wchar_t wide character buffer.
1039 * The new function ppoll is an improved version of poll, similar to pselect.
1041 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1042 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1043 renameat, unlinkat, linkat, symlinkat, readlinkat.
1045 * New Linux kernel system calls: unshare,
1046 inotify_init, inotify_add_watch, inotify_rm_watch.
1048 * The euidaccess function is now also known by the alias eaccess,
1049 for compatibility with some other systems.
1051 * Timezone data updated to 2006b version.
1055 * The following bugs are resolved with this release:
1057 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1058 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1059 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1060 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1061 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1062 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1064 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1066 * As of this release, GCC 4 can be used to compile the C Library.
1068 * Timezone data updated to 2005m version.
1072 * The following bugs are resolved with this release:
1074 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1075 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1076 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1077 777, 787, 821, 822, 823, 825
1079 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1083 * Support for RFC 3678. Real implementations exist only for Linux so far.
1084 Implemented by Ulrich Drepper.
1086 * nscd can now cache entries persistently. Expiring entries are reloaded.
1087 For speedups the cache can be shared in memory with client processes.
1088 Implemented by Ulrich Drepper.
1090 * nscd can now perform SELinux checks.
1091 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1093 * getaddrinfo queries are now cached. Canonical name lookup is performed
1095 Implemented by Ulrich Drepper.
1097 * The nothrow function attribute is used when headers are used by gcc when
1098 compiling C code. This can avoid significant amounts of exception
1101 * The malloc functions perform more error checking and are stricter when
1102 it comes to reacting on errors. The default action is to terminate
1103 the process after showing an error message. Implemented by Ulrich Drepper.
1105 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1106 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1108 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1109 namespaces using the new function dlmopen(). This feature is of course,
1110 like most other dynamic loading functionality, not available in statically
1111 linked applications. Implemented by Ulrich Drepper.
1113 * Low-overhead boundary checking variants of string and some stdio functions
1114 were added. These are to be used in conjunction with a gcc patch by
1115 Jakub Jelinek which adds calls to these functions if possible.
1116 Implemented by Jakub Jelinek and Ulrich Drepper.
1118 * Old code for several operating systems and machine architectures that
1119 have not been in working condition in a long time have been removed from
1120 the main source tree maintained by the GNU C Library's maintainers.
1121 These files are now reside in the separate `ports' source module
1122 that is usable as an add-on when building the library.
1126 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1127 interrogate the dynamic linker, compatible with the Solaris interface.
1129 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1130 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1132 * getifaddrs now uses the netlink interface on Linux to get its information.
1133 Implemented by Thorsten Kukuk.
1135 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1136 Implemented by Ulrich Drepper.
1138 * support for non-executable stacks on x86 has been added. Changes mostly
1141 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1144 * getaddrinfo now performs destination address selection according to
1149 * Thread-safe interfaces for many functions that access locale data
1150 were added in version 2.3, but these features were omitted from NEWS.
1151 Many functions have variants with an `_l' suffix that take a `locale_t'
1152 object as a parameter rather than consulting the current locale.
1153 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1154 create and maintain `locale_t' objects. Additionally, the new function
1155 `uselocale' sets "the current locale" (as used by functions not so
1156 parameterized) set for an individual thread. These features were added
1157 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1159 * The functions getresuid, getresgid, setresuid, and setresgid, which
1160 have long been available on Linux, are now declared in <unistd.h>
1161 and are now also available on the Hurd.
1163 * ELF thread-local storage support (TLS) now works on x86-64.
1165 * The new dynamic string token $LIB is expanded in shared library names.
1166 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1168 * Aldy Hernandez contributed complete software floating point support for
1169 PowerPC machines with no FPU.
1171 * fexecve is implemented on Linux.
1173 * The `btowc' function should work at least twice as fast due to
1174 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1176 * With approriate thread add-ons cancelable functions are now implemented
1177 in libc.so as well. No need to call the function in libpthread. This
1178 change allowed to finally disable the incorrect and expensive handling
1179 of weak definition in ld.so.
1181 * Yet more PLT entries in libc.so have been removed. We finally arrived
1182 at the bare minimum. Startup times improved appropriately.
1184 * Support for the new Linux/x86 system call interface was added. The
1185 AT_SYSINFO auxiliary vector entry is recognized and handled.
1189 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1192 * iconv (the program and the interface) now accepts empty names (excluding
1193 options like //TRANSLIT) to mean "use charset of current locale".
1195 * localedef can now transliterate characters in strings which are not in
1196 the provided charmap. The information from the input locale is used.
1198 * Prelinking support was added for ELF targets. This requires additional
1199 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1201 * Read-only stdio streams now use mmap to speed up operation by eliminating
1202 copying and buffer underflows. To use add 'm' to the mode string of
1203 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1205 * The malloc functions were completely rewritten by Wolfram Gloger based
1206 on Doug Lea's malloc-2.7.0.c.
1208 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1209 implementation of regex.
1211 * Bruno Haible upgraded the iconv and locale implementation to support
1214 * Contents of the LC_* and LANG environment variables in the CEN style are
1215 not recognized anymore. It never was used. Change by Ulrich Drepper.
1217 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1218 thread-local storage (TLS) ABI on some platforms.
1219 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1221 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1222 EUC-JISX0213, and TSCII.
1224 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1225 BSD-compatible interface for getting all network interface addresses.
1226 Implementation for IPv4 by Roland McGrath.
1228 * Loading of locale data is faster due to the introduction of a locale
1229 archive. Implemented by Roland McGrath and Ulrich Drepper.
1231 * Startup times are significantly reduced by not using exported functions
1232 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1235 * Steven Munroe contributed a port to PowerPC64/Linux.
1239 * The Hurd now uses the GNU libio implementation of stdio rather than the
1240 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1242 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1243 with the same behavior as the Linux system call of the same name.
1247 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1248 128-bit long double format.
1250 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1251 IBM1161, and IBM1162 charsets.
1253 * Andreas Jaeger contributed a port to x86-64/Linux.
1255 * Peter Bruin contributed a port to PowerPC/Hurd.
1257 * libc functions using I/O streams now can handle wide-oriented streams
1260 * optimizations in the dynamic linker. Binaries created by recent binutils
1261 versions start up quicker due to reduced time spent on relocations.
1263 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1267 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1268 asinh, atanh, j0 for the 128-bit long double format.
1270 * Bruno Haible updated all the code handling Unicode in some form to
1271 support Unicode 3.1.
1273 * Speed of regex for single-byte locales is back to previous levels.
1274 Patch by Isamu Hasegawa.
1276 * Alpha, SPARC, and IA-64 now also using floating stacks.
1278 * Startup time of internationalized applications greatly improved through
1279 iconv cache. Use iconvconfig to generate the cache file.
1280 Contributed by Ulrich Drepper.
1282 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1283 severe performance problems. Patch by David Mosberger.
1285 * The Hurd port got a lot more functionality like AIO, various stdio
1286 extensions, etc. Mainly done by Roland McGrath.
1288 * mtrace can now lookup symbols in shared libraries.
1292 * Intel's IA-64 math library is largely integrated. It provides fast and
1293 accurate implementatations for most basic and standard math functions
1294 in float, double, and long double format.
1296 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1297 and asin for the 96-bit long double format and asin, log, tan for the
1298 128-bit long double format.
1300 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1301 The basic double functions exist today. Contributed by Abraham Ziv
1302 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1303 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1305 * An asynchronous name lookup library was added. The interface is designed
1306 after POSIX AIO. The proposal was circulated beforehand to get comments.
1307 No negative ones came in. Implemented by Ulrich Drepper.
1309 * Port to S390/64bit contributed by Martin Schwidefsky
1310 <schwidefsky@de.ibm.com>.
1312 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1313 of functions for Linux/IA-64.
1315 * The RPC code is now thread safe. Threads can now use the same service
1316 of different services at the same time. Patch by Eric Norum
1317 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1319 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1320 family of functions for Linux/S390.
1322 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1323 of functions for Linux/x86.
1325 * Port to Linux/CRIS contributed by Axis Communications.
1329 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1330 we can now check for namespace violations and missing declarations. The
1331 result is that almost all headers are now Unix-compliant (as defined in
1332 the upcoming XPG6). The negative side is that some programs might need
1333 corrections, too, if they depend on the incorrect form of the headers in
1334 previous versions which defined too many symbols and included too many
1337 * regex now handles multibyte character sets correctly.
1338 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1340 * iconv (the program) does now conform to the upcoming XPG6 and handles
1341 charmaps. Instead of the charset names the path of charmaps can be
1342 provided and the conversion happens based on this data.
1343 Contributed by Ulrich Drepper.
1345 * The locale program now provides detailed information about the installed
1350 only lists the names of the supported locales
1354 provides details such as country, language, and codeset name.
1355 Contributed by Ulrich Drepper.
1359 * The gencat program now parses the input file according to the charset
1360 selected by the LC_CTYPE category. This is important for stateful
1361 character sets. To make generating catalogs easier there is a way
1362 to overwrite the charset selected by the locale: before the first
1363 message or $ quote line the catalog can contain a line like
1365 $ codeset=ISO-8859-2
1367 to select the charset (ISO-8859-2 in this case).
1369 Implemented by Shinya Hanataka and Ulrich Drepper.
1371 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1372 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1373 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1375 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1376 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1378 * The LANGUAGE environment variable is now ignored unless the locale is
1379 changed from the default "C" locale.
1381 * The usual bug fixes.
1385 * Greg McGary added runtime support for bounds checking using gcc's
1386 new -fbounded-pointers option. ix86 target is complete. PowerPC
1389 * Thorsten Kukuk added secure mode support to nscd.
1391 * The Berkeley db libraries have been removed.
1393 Related, the nss_db module is now in a separate package since it
1394 obviously requires a database library being available.
1396 * Wide character I/O streams implemented by Ulrich Drepper.
1398 * Functions from the extended socket API added by Ulrich Drepper.
1400 * Functions feenableexcept and fedisableexcept to control the
1401 behaviour of individual exceptions have been added by Andreas Jaeger.
1403 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1405 * The resolver code has been updated from bind 8.2.3-T5B which supports
1406 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1409 This change could in some situations effect backward compatibility. Since
1410 now `_res' is a thread-local instead of a global variable, modifying it
1411 in one thread does not have any effect in other threads.
1413 The resolver library was also extended to allow IPv6 as the transport
1414 protocol for the requests. This work was done by Stig Venaas.
1416 * Compatibility code for K&R C compilers has been removed from the
1417 header files. A ISO C compiler is needed to use the library
1418 (conforming to either C89 or C99 standard).
1420 * Complete rewrite of the localedef program to support multibyte character
1421 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1422 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1423 Implemented by Ulrich Drepper.
1425 Bruno Haible significantly improved the generation and use of the data
1426 structures for the wide character tables.
1428 * Plural handling in gettext implemented by Ulrich Drepper.
1430 * The utmp daemon has been removed.
1432 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1434 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1437 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1439 * POSIX barriers implemented by Kaz Kylheku.
1441 * POSIX spawn function family implemented by Ulrich Drepper.
1443 * POSIX spinlocks are now available.
1445 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1447 * the configure option --enable-kernel=X.Y.Z allows to strip out
1448 compatibility for kernel versions before X.Y.Z. This is currently only
1449 implemented for Linux.
1451 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1452 field sin6_scope_id. This means that all programs using IPv6 should be
1453 recompiled. Don't expect binary compatibility with previous glibc
1456 * various conversion modules for IBM character sets contributed by
1459 * IA-64 port by Jes Sorensen and HJ Lu.
1473 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1475 * New xdr functions are added; some rpc functions are now 64bit clean.
1477 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1479 * Fixed known incompatibilities with glibc 2.0.
1481 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1483 * Optimized a number of functions (especially the ELF dynamic loader).
1485 * Update timezone data files.
1487 * lots of charmaps corrections
1489 * some new locale definitions and charmaps
1494 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1495 conform to POSIX member type requirements. Symbol versions have been
1496 adjusted as needed within the library, and for direct use by applications,
1497 but there is potential for problems if third-party libraries use
1498 struct timeval as part of their interface. This does not present
1499 a problem for X and other "essential" system libraries.
1501 * An additional locale model to support C++ Standard Library locale
1502 model and probably more was implemented by Ulrich Drepper.
1504 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1507 * Miles Bader provided the `argp' function family to support hierachical
1508 command line argument parsing, layered on top of getopt.
1510 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1512 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1515 * scanf recognizes the %a and %A format for scanning floating point numbers.
1517 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1518 information and interfaces for the available integer types.
1520 * about 130 new math functions were added to implement the ISO C9x math
1523 * the new header <complex.h> contains definitions of the complex math
1524 functions from ISO C 9X.
1526 * the new header <tgmath.h> defines generic macros to use complex or
1527 real valued functions.
1529 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1531 * Andreas Jaeger provided a test suite for the math library.
1533 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1535 * Ulrich Drepper added character set conversion functions (iconv).
1537 * Optimized string functions have been added.
1539 * The localedata addon is now part of glibc.
1541 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1543 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1544 daemon for NSS (nscd).
1546 Missing a better place here are some numbers on improvements. Under
1547 Linux 2.1.125 un-tar-ing the kernel sources takes
1551 using local files 12.19s 6.88s 22.91s
1553 using NIS 13.92s 8.91s 26.34s
1555 using NIS & nscd 10.37s 7.34s 25.30s
1557 using NIS+ 27.57s 30.37s 640.46s
1559 using NIS+ & nscd 10.25s 7.83s 26.51s
1561 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1563 Keep in mind that non-namelookup related operations dominate above times.
1564 It was just a common complain that using NIS+ unpacking the kernel is
1567 [1] The old nscd implementation is not available anymore since it was
1568 distributed with glibc up to version 2.0.98 and thus is now replaced.
1570 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1572 * Mark Kettenis provided a Hesiod NSS module.
1574 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1575 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1577 * rcmd can now handle netgroups (Dick Streefland).
1579 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1582 * Support for the IPv6 protocol has been added to the socket API, as per the
1583 latest draft standards.
1585 * Support for Linux 2.2 has been added.
1587 * Interface changes relative to the latest 2.0.x release:
1588 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1589 addseverity NEW: Unix98
1590 alphasort64 NEW: LFS
1591 argp_err_exit_status NEW: argp, GNU ext
1592 argp_error NEW: argp, GNU ext
1593 argp_failure NEW: argp, GNU ext
1594 argp_help NEW: argp, GNU ext
1595 argp_parse NEW: argp, GNU ext
1596 argp_program_bug_address NEW: argp, GNU ext
1597 argp_program_version NEW: argp, GNU ext
1598 argp_program_version_hook NEW: argp, GNU ext
1599 argp_state_help NEW: argp, GNU ext
1600 argp_usage NEW: argp, GNU ext
1601 authdes_create NEW: Secure RPC
1602 authdes_getucred NEW: Secure RPC
1603 authdes_pk_create NEW: Secure RPC
1604 backtrace NEW: GNU ext.
1605 backtrace_symbols NEW: GNU ext.
1606 backtrace_symbols_fd NEW: GNU ext.
1608 cacosf NEW: ISO C 9x
1609 cacosh NEW: ISO C 9x
1610 cacoshf NEW: ISO C 9x
1611 cacoshl NEW: ISO C 9x
1612 cacosl NEW: ISO C 9x
1619 casinf NEW: ISO C 9x
1620 casinh NEW: ISO C 9x
1621 casinhf NEW: ISO C 9x
1622 casinhl NEW: ISO C 9x
1623 casinl NEW: ISO C 9x
1625 catanf NEW: ISO C 9x
1626 catanh NEW: ISO C 9x
1627 catanhf NEW: ISO C 9x
1628 catanhl NEW: ISO C 9x
1629 catanl NEW: ISO C 9x
1630 cbc_crypt NEW: Secure RPC
1634 ccoshf NEW: ISO C 9x
1635 ccoshl NEW: ISO C 9x
1641 cimagf NEW: ISO C 9x
1642 cimagl NEW: ISO C 9x
1643 clearerr_locked REMOVED
1644 clntunix_create NEW: sunrpc ext
1646 clog10 NEW: ISO C 9x
1647 clog10f NEW: ISO C 9x
1648 clog10l NEW: ISO C 9x
1658 cprojf NEW: ISO C 9x
1659 cprojl NEW: ISO C 9x
1661 crealf NEW: ISO C 9x
1662 creall NEW: ISO C 9x
1667 csinhf NEW: ISO C 9x
1668 csinhl NEW: ISO C 9x
1671 csqrtf NEW: ISO C 9x
1672 csqrtl NEW: ISO C 9x
1676 ctanhf NEW: ISO C 9x
1677 ctanhl NEW: ISO C 9x
1679 des_setparity NEW: Secure RPC
1680 ecb_crypt NEW: Secure RPC
1681 endutxent NEW: Unix98
1683 exp10f NEW: ISO C 9x
1684 exp10l NEW: ISO C 9x
1688 fattach NEW: STREAMS
1689 fdetach NEW: STREAMS
1693 feclearexcept NEW: ISO C 9x
1694 fegetenv NEW: ISO C 9x
1695 fegetexceptflag NEW: ISO C 9x
1696 fegetround NEW: ISO C 9x
1697 feholdexcept NEW: ISO C 9x
1699 feraiseexcept NEW: ISO C 9x
1700 ferror_locked REMOVED
1701 fesetenv NEW: ISO C 9x
1702 fesetexceptflag NEW: ISO C 9x
1703 fesetround NEW: ISO C 9x
1704 fetestexcept NEW: ISO C 9x
1705 feupdateenv NEW: ISO C 9x
1706 fflush_locked REMOVED
1710 fgets_unlocked NEW: GNU ext.
1711 fileno_locked REMOVED
1723 fputc_locked REMOVED
1724 fputs_unlocked NEW: GNU ext.
1725 fread_unlocked NEW: GNU ext.
1730 fstatvfs NEW: Unix98
1734 ftruncate64 NEW: LFS
1736 fwrite_unlocked NEW: GNU ext.
1737 gai_strerror NEW: IPv6
1741 getchar_locked REMOVED
1743 getdate_err NEW: Unix98
1744 getdate_r NEW: GNU ext.
1746 getnameinfo NEW: IPv6
1747 getnetname NEW: Secure RPC
1748 getpmsg NEW: STREAMS
1749 getpt NEW: Unix98 PTY
1750 getrlimit64 NEW: LFS
1751 getutxent NEW: Unix98
1752 getutxid NEW: Unix98
1753 getutxline NEW: Unix98
1754 glob64 NEW: GNU ext.
1755 globfree64 NEW: GNU ext.
1756 gnu_get_libc_release NEW: GNU ext.
1757 gnu_get_libc_version NEW: GNU ext.
1758 grantpt NEW: Unix98 PTY
1759 host2netname NEW: Secure RPC
1761 iconv_close NEW: iconv
1762 iconv_open NEW: iconv
1763 if_freenameindex NEW: IPv6
1764 if_indextoname NEW: IPv6
1765 if_nameindex NEW: IPv6
1766 if_nametoindex NEW: IPv6
1767 in6addr_any NEW: IPv6
1768 in6addr_loopback NEW: IPv6
1769 inet6_isipv4mapped NEW: IPv6
1770 isastream NEW: STREAMS
1771 iswblank NEW: GNU ext.
1772 key_decryptsession NEW: Secure RPC
1773 key_decryptsession_pk NEW: Secure RPC
1774 key_encryptsession NEW: Secure RPC
1775 key_encryptsession_pk NEW: Secure RPC
1776 key_gendes NEW: Secure RPC
1777 key_get_conv NEW: Secure RPC
1778 key_secretkey_is_set NEW: Secure RPC
1779 key_setnet NEW: Secure RPC
1780 key_setsecret NEW: Secure RPC
1781 llrint NEW: ISO C 9x
1782 llrintf NEW: ISO C 9x
1783 llrintl NEW: ISO C 9x
1784 llround NEW: ISO C 9x
1785 llroundf NEW: ISO C 9x
1786 llroundl NEW: ISO C 9x
1791 lrintf NEW: ISO C 9x
1792 lrintl NEW: ISO C 9x
1793 lround NEW: ISO C 9x
1794 lroundf NEW: ISO C 9x
1795 lroundl NEW: ISO C 9x
1797 makecontext NEW: Unix98
1798 mempcpy NEW: GNU ext.
1801 modify_ldt NEW: kernel
1805 nearbyint NEW: ISO C 9x
1806 nearbyintf NEW: ISO C 9x
1807 nearbyintl NEW: ISO C 9x
1808 netname2host NEW: Secure RPC
1809 netname2user NEW: Secure RPC
1810 nexttoward NEW: ISO C 9x
1811 nexttowardf NEW: ISO C 9x
1812 nexttowardl NEW: ISO C 9x
1816 passwd2des NEW: Secure RPC
1818 pow10f NEW: GNU ext.
1819 pow10l NEW: GNU ext.
1822 printf_size NEW: GNU ext.
1823 printf_size_info NEW: GNU ext.
1824 profil_counter REMOVED
1825 pthread_mutexattr_getkind_np REPLACED
1826 pthread_mutexattr_setkind_np REPLACED
1827 ptsname NEW: Unix98 PTY
1828 ptsname_r NEW: Unix98 PTY
1830 putchar_locked REMOVED
1831 putgrent NEW: GNU ext.
1833 putpmsg NEW: STREAMS
1834 pututxline NEW: Unix98
1838 readdir64_r NEW: LFS
1839 remquo NEW: ISO C 9x
1840 remquof NEW: ISO C 9x
1841 remquol NEW: ISO C 9x
1843 roundf NEW: ISO C 9x
1844 roundl NEW: ISO C 9x
1846 scalbln NEW: ISO C 9x
1847 scalblnf NEW: ISO C 9x
1848 scalblnl NEW: ISO C 9x
1850 sendfile NEW: kernel
1851 setcontext NEW: Unix98
1852 setrlimit64 NEW: LFS
1853 setutxent NEW: Unix98
1855 sigignore NEW: Unix98
1856 sigqueue NEW: POSIX.1b
1857 sigrelse NEW: Unix98
1858 sigset NEW: POSIX.1b
1859 sigtimedwait NEW: POSIX.1b
1860 sigwaitinfo NEW: POSIX.1b
1861 sincos NEW: GNU ext.
1862 sincosf NEW: GNU ext.
1863 sincosl NEW: GNU ext.
1867 strcasestr NEW: GNU ext.
1868 strtoimax NEW: ISO C 9x
1869 strtoumax NEW: ISO C 9x
1870 strverscmp NEW: GNU ext.
1871 svcauthdes_stats NEW: Secure RPC
1872 svcunix_create NEW: sunrpc etx
1873 svcunixfd_create NEW: sunrpc ext
1874 swapcontext NEW: Unix98
1875 tcgetsid NEW: Unix98 PTY
1876 tdestroy NEW: GNU ext.
1877 tgamma NEW: ISO C 9x
1878 tgammaf NEW: ISO C 9x
1879 tgammal NEW: ISO C 9x
1883 truncf NEW: ISO C 9x
1884 truncl NEW: ISO C 9x
1886 unlockpt NEW: Unix98 PTY
1887 updwtmpx NEW: Unix98
1888 user2netname NEW: Secure RPC
1889 utmpxname NEW: Unix98
1890 versionsort NEW: GNU ext.
1891 versionsort64 NEW: GNU ext.
1893 wcscasecmp NEW: GNU ext.
1894 wcsncasecmp NEW: GNU ext.
1895 wcsnlen NEW: GNU ext.
1896 wcstoimax NEW: ISO C 9x
1897 wcstoll NEW: ISO C 9x
1898 wcstoull NEW: ISO C 9x
1899 wcstoumax NEW: ISO C 9x
1901 wordexp NEW: POSIX.2
1902 wordfree NEW: POSIX.2
1903 write_profiling REMOVED
1904 xdecrypt NEW: Secure RPC
1905 xdr_authdes_cred NEW: Secure RPC
1906 xdr_authdes_verf NEW: Secure RPC
1907 xdr_cryptkeyarg NEW: Secure RPC
1908 xdr_cryptkeyarg2 NEW: Secure RPC
1909 xdr_cryptkeyres NEW: Secure RPC
1910 xdr_getcredres NEW: Secure RPC
1911 xdr_key_netstarg NEW: Secure RPC
1912 xdr_key_netstres NEW: Secure RPC
1913 xdr_keybuf NEW: Secure RPC
1914 xdr_keystatus NEW: Secure RPC
1915 xdr_netnamestr NEW: Secure RPC
1916 xdr_sizeof NEW: Secure RPC
1917 xdr_unixcred NEW: sunrpc ext
1918 xencrypt NEW: Secure RPC
1919 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1930 * inet_ntoa is thread-safe
1932 * updwtmp is moved from libutil to libc
1934 * rewrite of cbrt function
1936 * update of timezone data
1950 * add atoll function
1952 * fix complex problems in Berkeley DB code
1954 * fix math functions
1958 * fixed lots of header problems (especially Linux/GNU specific)
1960 * dynamic loader preserves all registers
1962 * Roland McGrath provided support for handling of auxiliary objects in
1963 the ELF dynamic loader.
1965 * support for parallel builds is improved
1969 * GNU extensions are no longer declared by default. To enable them you
1970 must define the macro `_GNU_SOURCE' in your program or compile with
1973 * The library has changed from using GNU ld symbol aliases to using weak
1974 symbols where available. The ELF object file format supports weak
1975 symbols; GNU ld also supports weak symbols in the a.out format. (There
1976 is also now support for other GNU ld extensions in ELF. Use the
1977 `--with-elf' option to configure to indicate you have ELF, and
1978 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1979 of many files which contained only symbol aliases, reducing the size of
1980 the source and the compiled library; many other files were renamed to
1981 less cryptic names previously occupied by the symbol alias files.
1982 There is a new header file <elf.h> for programs which operate on
1983 files in the ELF format.
1985 * Converted to Autoconf version 2, so `configure' has more options.
1986 Run `configure --help' to see the details.
1988 * The library can now be configured to build profiling, highly-optimized
1989 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1990 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1991 `configure' enable building these extra libraries. The shared library is
1992 built by default when using both ELF and GNU ld. When shared libraries
1993 are enabled, the new library `-ldl' is available for arbitrary run-time
1994 loading of shared objects; its interface is defined in <dlfcn.h>. The
1995 new header file <link.h> gives access to the internals of the run-time
1996 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1997 application of same name on other systems and it provides information
1998 about dynamically linked binaries.
2000 * The C library now provides the run-time support code for profiling
2001 executables compiled with `-pg'. Programs can control the profiling code
2002 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2003 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2004 the support for this file format was contributed by David Mosberger-Tang.
2006 * The math code has been replaced with a math library based on fdlibm from
2007 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2008 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2009 functions. The math functions now reside in a separate library, so
2010 programs using them will need to use `-lm' their linking commands.
2012 * John C. Bowman contributed optimized ix87 assembler inline functions.
2014 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2015 mechanism similar to that found in Solaris 2. This is now used for the
2016 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2017 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2018 file controls what services are used for each individual database. This
2019 works by loading shared libraries with names specified in `nsswitch.conf',
2020 so service modules can be changed or added at any time without even
2021 relinking any program. Currently there are the file, db, and NIS based
2022 NSS services available.
2024 * The new functions `strtoq' and `strtouq' parse integer values from
2025 strings, like `strtol' and `strtoul', but they return `long long int' and
2026 `unsigned long long int' values, respectively (64-bit quantities).
2028 * The new functions `strtof' and `strtold' parse floating-point values from
2029 strings, like `strtod', but they return `float' and `long double' values,
2030 respectively (on some machines `double' and `long double' are the same).
2032 * Ulrich Drepper has contributed new implementations of the floating-point
2033 printing and reading code used in the `printf' family of functions and
2034 `strtod', `strtof', and `strtold'. These new functions are perfectly
2035 accurate, and much faster than the old ones.
2037 * The implementation of the POSIX locale model was completely rewritten by
2038 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2039 to compile the POSIX locale definition.
2041 * The former dummy implementations of the strcoll and strxfrm function are
2042 now replaced by fully functional code contributed by Ulrich Drepper. The
2043 collation information comes from the POSIX locale definitions.
2045 * The new header <langinfo.h> defines an interface for accessing
2046 various locale-dependent data (using the locale chosen with `setlocale').
2048 * Ulrich Drepper has contributed a new suite of functions for operation on
2049 wide-character and multibyte-character strings, in <wchar.h>;
2050 and classification and case conversion of wide characters, in <wctype.h>.
2051 These new functions are conforming to the ISO C, Amendement 1 specification.
2053 * There is now a second implementation of the standard I/O library available.
2054 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2055 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2057 * You can now use positional parameter specifications in format strings
2058 for the `printf' and `scanf' families of functions. For example,
2059 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2060 ``Number 6, Mr Jones''. This is mainly useful when providing different
2061 format strings for different languages, whose grammars may dictate
2062 different orderings of the values being printed. To support this
2063 feature, the interface for `register_printf_handler' has changed; see
2064 the header file <printf.h> for details.
2066 * The `printf' and `scanf' families of functions now understand a new
2067 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2068 to group numbers as indicated by the locale; for `scanf' and friends, this
2069 says to accept as valid only a number with all the proper grouping
2070 separators in the right places. In the default "C" locale, numbers are
2071 not grouped; but locales for specific countries will define the usual
2072 conventions (i.e. separate thousands with `,' in the US locale).
2074 * The pgrp functions have been regularized, slightly incompatibly but much
2075 less confusingly. The core functions are now `getpgid' and `setpgid',
2076 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2077 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2078 provided for compatibility. There is no longer an incompatible `getpgrp'
2079 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2081 * The new header file <fts.h> and suite of functions simplify programs that
2082 operate on directory trees. This code comes from 4.4 BSD.
2084 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2085 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2086 NSS scheme used in glibc.
2088 * There is a new malloc debugging hook `__memalign_hook'.
2090 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2091 `unsigned int' in <sys/types.h>. These are for compatibility only and
2092 their use is discouraged.
2094 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2095 done differently, so that it works even without GNU ld.
2097 * New function `euidaccess' checks allowed access to a file like `access',
2098 but using the effective IDs instead of the real IDs.
2100 * The time zone data files have been updated for the latest and greatest
2101 local time conventions of the countries of the world.
2103 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2106 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2107 for formatting floating-point numbers. They are provided only for
2108 compatibility; new programs should use `sprintf' instead. There are
2109 also equivalent function for the `long double' floating-point type and
2110 all functions also exist in a reentrant form.
2112 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2113 functions for maintaining the login-record files (primarily of use to
2114 system programs such as `login'), and convenient functions for
2115 allocating and initializing a pseudo-terminal (pty) device.
2117 * Ulrich Drepper has contributed new support for System V style
2118 shared memory and IPC on systems that support it.
2120 * Ulrich Drepper has contributed several miscellaneous new functions found
2121 in System V: The `hsearch' family of functions provide an effective
2122 implementation of hash tables; `a64l' and `l64a' provide a very simple
2123 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2126 * Ulrich Drepper has contributed new reentrant counterparts for the
2127 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2129 * Ulrich Drepper has contributed new, highly-optimized versions of several
2130 string functions for the i486/Pentium family of processors.
2132 * Ulrich Drepper has updated the Linux-specific code, based largely
2133 on work done in Hongjiu Lu's version of GNU libc for Linux.
2134 The GNU library now supports Linux versions 2.0.10 and later,
2135 using the ELF object file format (i[3456]86-*-linux).
2137 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2139 * David Mosberger-Tang and Richard Henderson have ported the C library
2140 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2141 dynamic linking support for ELF/Alpha.
2143 * Richard Henderson contributed several Alpha optimized assembler function
2144 for arithmetic and string handling.
2146 * Ulrich Drepper has contributed a new set of message catalog functions to
2147 support multiple languages using the <libintl.h> interface, for use with
2148 his new package GNU gettext. Translation volunteers have contributed
2149 catalogs of the library's messages in Spanish, German, and Korean.
2151 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2152 program and the `catgets' function for reading the catalog files it
2153 creates. (The <libintl.h> interface is preferred; we include the
2154 <nl_types.h> interface using `catgets' only for source compatibility with
2155 programs already written to use it.)
2157 * New header file <values.h> gives SVID-compatible names for <limits.h>
2160 * Various new macros, declarations, and small header files for compatibility
2163 * New function `group_member' is a convenient way to check if a process has
2164 a given effective group ID.
2166 * When using GCC 2.7 and later, the socket functions are now declared in a
2167 special way so that passing an argument of type `struct sockaddr_in *',
2168 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2169 `struct sockaddr *' type, does not generate a type-clash warning.
2171 * New function `error' declared in header file <error.h> is a convenient
2172 function for printing error messages and optionally exiting; this is the
2173 canonical function used in GNU programs. The new functions `err', `warn',
2174 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2175 doing the same thing.
2177 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2178 POSIX.2 `glob' function to do ~ and {...} expansion.
2180 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2181 `clearenv' which is used in POSIX.9 is also available.
2183 * New function `getsid' returns session ID number on systems that support it.
2185 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2186 files <db.h> and <mpool.h> provide a rich set of functions for several
2187 types of simple databases stored in memory and in files, and <ndbm.h> is
2188 an old `ndbm'-compatible interface using the `db' functions. Link with
2189 `-ldb' to get these functions.
2191 * New macro `strdupa' copies a string like `strdup', but uses local stack
2192 space from `alloca' instead of dynamic heap space from `malloc'.
2194 * New function `strnlen' is like `strlen' but searches only a given maximum
2195 number of characters for the null terminator. `stpncpy', `strndup' and
2196 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2199 * New function `statfs' in header <sys/statfs.h>.
2201 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2202 provide convenient functions for operating on blocks of null-terminated
2205 * A new suite of functions in <utmp.h> handle all the details of reading
2206 and writing the utmp file.
2208 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2211 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2212 completely POSIX compliant and also implemented the extended functionality
2213 to handle alternate digit representation and alternate era date formats.
2215 * Ulrich Drepper provided an implementation of the `strptime' function
2216 defined in XPG4.2 which transforms a string into a `struct tm' value.
2218 * Paul Eggert provided the tzselect shell script as part of the timezone
2219 code. The shell script makes it easy to select the correct timezone
2222 * The implementation of the malloc family of functions is completely replaced
2223 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2224 The implementation uses the mmap function (if available) and it is
2225 optimized for the use in multi threaded programs.
2227 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2228 functions. This new functionality is usable by specifying a special
2229 salt string and it is compatible with implementation on *BSD systems.
2231 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2232 `getsubopt' to handle second level command line options, `bsd_signal'
2233 to access BSD style `signal' functionality, the obsolete `regexp' style
2236 * the `lchown' function is available on system which support this
2239 * The implementation of the shadow password handling function was contributed
2242 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2244 * POSIX.1g support was added. The <sys/select.h> header is available,
2245 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2246 implementation of `getaddrinfo'.
2250 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2252 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2253 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2255 * The new function `daemon' from 4.4 BSD is useful for server programs that
2256 want to put themselves in the background.
2258 * Joel Sherrill has contributed support for several standalone boards that
2259 run without an operating system.
2261 * `printf', `scanf' and friends now accept a `q' type modifier for long
2262 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2264 * All of the code taken from BSD (notably most of the math and networking
2265 routines) has been updated from the BSD 4.4-Lite release.
2267 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2269 * The new functions `getdomainname' and `setdomainname' fetch or change the
2270 YP/NIS domain name. These are system calls which exist on systems which
2273 * The time zone data files have been updated for the latest international
2276 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2277 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2281 * The C library now includes support for Sun RPC, from Sun's free
2282 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2283 are included. (There is still no support for YP.)
2285 * Tom Quinn has contributed a port of the C library to SGI machines running
2286 Irix 4 (mips-sgi-irix4).
2288 * The new `lockf' function is a simplified interface to the locking
2289 facilities of `fcntl', included for compatibility.
2291 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2293 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2295 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2298 * The error message printed by `assert' for a failed assertion now includes
2299 the name of the program (if using GNU ld) and the name of the calling
2300 function (with versions of GCC that support this).
2302 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2304 * The library now includes the <sys/mman.h> header file and memory
2305 management functions `mmap', `munmap', `mprotect', `msync', and
2306 `madvise', on systems that support those facilities.
2308 * The interface for `mcheck' has changed slightly: the function called to
2309 abort the program when an allocation inconsistency is detected now takes
2310 an argument that indicates the type of failure. The new function
2311 `mprobe' lets you request a consistency check for a particular block at
2312 any time (checks are normally done only when you call `free' or `realloc'
2315 * It is now possible to easily cross-compile the C library, building on one
2316 system a library to run on another machine and/or operating system. All
2317 you need to do is set the variable `HOST_CC' in `configparms' to the
2318 native compiler for programs to run on the machine you are building on (a
2319 few generator programs are used on Unix systems); set `CC' to the
2322 * The new function `fexecve' (only implemented on the GNU system) executes
2323 a program file given a file descriptor already open on the file.
2327 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2328 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2330 * You can set the variable `libprefix' in `configparms' to specify a prefix
2331 to be prepended to installed library files; this makes it easy to install
2332 the GNU C library to be linked as `-lgnuc' or whatever.
2334 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2335 copies a limited number of characters from a string, and returns the
2336 address of the last character written.
2338 * You no longer need to check for whether the installed `stddef.h' is
2339 compatible with the GNU C library. configure now checks for you.
2341 * You can now define a per-stream `fileno' function to convert the
2342 stream's cookie into an integral file descriptor.
2344 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2345 allocates zero bytes of storage, and returns a unique pointer which
2346 you can pass to `realloc' or `free'. The behavior is undefined if
2347 you dereference this pointer.
2349 * The C library now runs on Sony NEWS m68k machines running either
2350 NewsOS 3 or NewsOS 4.
2352 * The new `syscall' function is a system-dependent primitive function
2353 for invoking system calls. It has the canonical behavior on Unix
2354 systems, including unreliable return values for some calls (such as
2355 `pipe', `fork' and `getppid').
2357 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2358 to `EAGAIN', which is the preferred name. On systems whose kernels
2359 use two distinct codes, the C library now translates EWOULDBLOCK to
2360 EAGAIN in every system call function.
2364 * The GNU C Library Reference Manual is now distributed with the library.
2365 `make dvi' will produce a DVI file of the printed manual.
2366 `make info' will produce Info files that you can read on line using C-h i
2367 in Emacs or the `info' program.
2368 Please send comments on the manual to bug-glibc-manual@gnu.org.
2370 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2372 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2374 * Jason Merrill has contributed a port to the Sequent Symmetry running
2375 Dynix version 3 (i386-sequent-dynix).
2377 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2378 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2380 * New function `memory_warnings' lets you arrange to get warnings when
2381 malloc is running out of memory to allocate, like Emacs gives you.
2383 * The C library now contains the relocating allocator used in Emacs 19 for
2384 its editing buffers. This allocator (ralloc) minimizes allocation
2385 overhead and fragmentation by moving allocated regions around whenever it
2386 needs to. You always refer to a ralloc'd region with a "handle" (a
2387 pointer to a pointer--an object of type `void **').
2389 * There is a new `printf' format: `%m' gives you the string corresponding
2390 to the error code in `errno'.
2392 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2393 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2394 pass, the `a' modifier says to fill in a `char **' you pass with a
2397 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2398 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2399 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2401 * `mkstemp' is a traditional Unix function to atomically create and open a
2402 uniquely-named temporary file.
2406 * The standard location for the file that says what the local timezone is
2407 has changed again. It is now `/usr/local/etc/localtime' (or more
2408 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2410 * The distribution no longer contains any files with names longer than 14
2413 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2414 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2416 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2420 * The configuration process has changed quite a bit. The `configure'
2421 script is now used just like the configuration scripts for other GNU
2422 packages. The `sysdeps' directory hierarchy is much rearranged.
2423 The file `INSTALL' explains the new scheme in detail.
2425 * The header files no longer need to be processed into ANSI C and
2426 traditional C versions. There is just one set of files to install, and
2427 it will work with ANSI or old C compilers (including `gcc -traditional').
2429 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2430 MIPS DECStation running Ultrix 4.
2432 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2433 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2434 made itself into a shared library.
2436 * Yet further improved support for the i386, running 4.3 BSD-like systems
2437 (such as Mach 3 with the Unix single-server), or System V.
2439 * New function `strncasecmp' to do case-insensitive string comparison
2440 with limited length.
2442 * New function `strsep' is a reentrant alternative to `strtok'.
2444 * New functions `scandir' and `alphasort' for searching directories.
2446 * New function `setenv' is a better interface to `putenv'.
2448 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2449 function for traversing a directory tree.
2451 * The GNU obstack package is now also part of the C library.
2452 The new function `open_obstack_stream' creates a stdio stream that
2453 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2454 formatted output directly to an obstack.
2456 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2457 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2459 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2461 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2462 things to your strings.
2464 * There are some new test programs: test-fseek, testmb, and testrand.
2466 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2467 These ports are not finished, but are a good starting place for really
2468 supporting those systems.
2470 * `/etc/localtime' is now the standard location for the file that says what
2471 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2472 This follows the general principle that `/etc' is the place for all local
2473 configuration files.
2475 * The C library header files now use `extern "C"' when used by the C++
2476 compiler, so the C library should now work with C++ code.
2478 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2479 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2482 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2483 function which uses the `merge sort' algorithm, and is said to be
2484 significantly faster than the old GNU `qsort' function. Merge sort is
2485 now the standard `qsort' function. The new algorithm can require a lot
2486 of temporary storage; so, the old sorting function is called when the
2487 required storage is not available.
2489 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2490 provides the Unix `crypt' function, plus some other entry points.
2492 * The code and header files taken from 4.4 BSD have been updated with the
2493 latest files released from Berkeley.
2495 ----------------------------------------------------------------------
2496 Copyright information:
2498 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2500 Permission is granted to anyone to make or distribute verbatim copies
2501 of this document as received, in any medium, provided that the
2502 copyright notice and this permission notice are preserved,
2503 thus giving the recipient permission to redistribute in turn.
2505 Permission is granted to distribute modified versions
2506 of this document, or of portions of it,
2507 under the above conditions, provided also that they
2508 carry prominent notices stating who last changed them.
2511 version-control: never