1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 16009, 16617, 16618, 17266, 17269, 17370, 17371, 17460, 17485, 17555,
13 17625, 17630, 17801, 18032, 18080, 18508, 18665, 18694, 18928, 19018,
16 * A stack-based buffer overflow was found in libresolv when invoked from
17 libnss_dns, allowing specially crafted DNS responses to seize control
18 of execution flow in the DNS client. The buffer overflow occurs in
19 the functions send_dg (send datagram) and send_vc (send TCP) for the
20 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
21 family. The use of AF_UNSPEC triggers the low-level resolver code to
22 send out two parallel queries for A and AAAA. A mismanagement of the
23 buffers used for those queries could result in the response of a query
24 writing beyond the alloca allocated buffer created by
25 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
26 the overflow. Thanks to the Google Security Team and Red Hat for
27 reporting the security impact of this issue, and Robert Holiday of
28 Ciena for reporting the related bug 18665. (CVE-2015-7547)
30 * The LD_POINTER_GUARD environment variable can no longer be used to
31 disable the pointer guard feature. It is always enabled.
33 * CVE-2015-1472 Under certain conditions wscanf can allocate too little
34 memory for the to-be-scanned arguments and overflow the allocated
35 buffer. The implementation now correctly computes the required buffer
36 size when using malloc.
38 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
39 under certain input conditions resulting in the execution of a shell for
40 command substitution when the applicaiton did not request it. The
41 implementation now checks WRDE_NOCMD immediately before executing the
42 shell and returns the error WRDE_CMDSUB as expected.
44 * CVE-2012-3406 printf-style functions could run into a stack overflow when
45 processing format strings with a large number of format specifiers.
47 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
48 infinite loopif the DNS response contained a PTR record of an unexpected
51 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 release.
52 It has been fixed to match 2.19 and older, but binaries built against 2.20
53 might need to be recompiled. See BZ#18694.
57 * The following bugs are resolved with this release:
59 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
60 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
61 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
62 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
63 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
64 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
65 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
66 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
67 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
68 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
69 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
70 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
71 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
72 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
73 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
75 * Reverted change of ABI data structures for s390 and s390x:
76 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
77 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
78 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
79 are preserved pointing straight to the same implementation as the old ones.
80 Given that, new callers will simply provide a too-big buffer to these
81 functions. Any applications/libraries out there that embed jmp_buf or
82 ucontext_t in an ABI-relevant data structure that have already been rebuilt
83 against 2.19 headers will have to rebuilt again. This is necessary in any
84 case to revert the breakage in their ABI caused by the glibc change.
86 * Support for file description locks is added to systems running the
87 Linux kernel. The standard file locking interfaces are extended to
88 operate on file descriptions, not file descriptors, via the use of
89 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
90 are associated with an open file instead of a process.
92 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
94 * The minimum Linux kernel version that this version of the GNU C Library
95 can be used with is 2.6.32.
97 * Running the testsuite no longer terminates as soon as a test fails.
98 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
99 with PASS or FAIL lines for individual tests. A summary of the results is
100 printed, including a list of failing lists, and "make check" exits with
101 error status if there were any unexpected failures. "make check
102 stop-on-test-failure=y" may be used to keep the old behavior.
104 * The am33 port, which had not worked for several years, has been removed
107 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
108 supported; they now act the same as _DEFAULT_SOURCE (but generate a
109 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
110 conflicted with POSIX (support for which was removed in 2.19), the
111 interfaces those macros enabled remain available when compiling with
112 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
115 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
117 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
118 This may improve lock scaling of existing programs on TX capable systems.
119 The lock elision code is only built with --enable-lock-elision=yes and
120 then requires a GCC version supporting the TX builtins. With lock elision
121 default mutexes are elided via __builtin_tbegin, if the cpu supports
122 transactions. By default lock elision is not enabled and the elision code
125 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
126 copy the path argument. This allowed programs to cause posix_spawn to
127 deference a dangling pointer, or use an unexpected pathname argument if
128 the string was modified after the posix_spawn_file_actions_addopen
131 * All supported architectures now use the main glibc sysdeps directory
132 instead of some being in a separate "ports" directory (which was
133 distributed separately before glibc 2.17).
135 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
136 On configurations that support it (all Linux configurations), it's now
137 used regardless of the --enable-add-ons switch to configure. It is no
138 longer possible to build such configurations without pthreads support.
140 * Locale names, including those obtained from environment variables (LANG
141 and the LC_* variables), are more tightly checked for proper syntax.
142 setlocale will now fail (with EINVAL) for locale names that are overly
143 long, contain slashes without starting with a slash, or contain ".." path
144 components. (CVE-2014-0475) Previously, some valid locale names were
145 silently replaced with the "C" locale when running in AT_SECURE mode
146 (e.g., in a SUID program). This is no longer necessary because of the
149 * On x86-64, the dynamic linker's lazy-binding support is now compatible
150 with application code using Intel MPX instructions. (With all previous
151 versions, the MPX register state could be clobbered when making calls
152 into or out of a shared library.) Note that while the new dynamic
153 linker is compatible with all known x86 hardware whether or not it
154 supports Intel MPX, some x86 instruction-set emulators might fail to
155 handle the new instruction encodings. This is known to affect Valgrind
156 versions up through 3.9 (but will be fixed in the forthcoming 3.10
157 release), and might affect other tools that do instruction emulation.
159 * Support for loadable gconv transliteration modules has been removed.
160 The support for transliteration modules has been non-functional for
161 over a decade, and the removal is prompted by security defects. The
162 normal gconv conversion modules are still supported. Transliteration
163 with //TRANSLIT is still possible, and the //IGNORE specifier
164 continues to be supported. (CVE-2014-5119)
166 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
167 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
168 resulting a denial-of-service security vulnerability in applications which
169 use functions related to iconv. (CVE-2014-6040)
173 * The following bugs are resolved with this release:
175 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
176 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
177 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
178 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
179 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
180 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
181 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
182 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
183 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
184 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
185 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
186 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
187 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
188 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
189 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
190 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
191 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
192 16431, 16453, 16474, 16506, 16510, 16529
194 * Slovenian translations for glibc messages have been contributed by the
195 Translation Project's Slovenian team of translators.
197 * The public headers no longer use __unused nor __block. This change is to
198 support compiling programs that are derived from BSD sources and use
199 __unused internally, and to support compiling with Clang's -fblock
200 extension which uses __block.
202 * CVE-2012-4412 The strcoll implementation caches indices and rules for
203 large collation sequences to optimize multiple passes. This cache
204 computation may overflow for large collation sequences and may cause a
205 stack or buffer overflow. This is now fixed to use a slower algorithm
206 which does not use a cache if there is an integer overflow.
208 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
209 rules for large collation sequences to optimize multiple passes and falls
210 back to alloca if malloc fails, resulting in a possible stack overflow.
211 The implementation now falls back to an uncached collation sequence lookup
214 * CVE-2013-4788 The pointer guard used for pointer mangling was not
215 initialized for static applications resulting in the security feature
216 being disabled. The pointer guard is now correctly initialized to a
217 random value for static applications. Existing static applications need
218 to be recompiled to take advantage of the fix (bug 15754).
220 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
221 to the d_name member of struct dirent, or omit the terminating NUL
222 character. (Bugzilla #14699).
224 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
225 aligned_alloc functions could allocate too few bytes or corrupt the
226 heap when passed very large allocation size values (Bugzilla #15855,
229 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
230 for AF_INET6 has been fixed (Bugzilla #16072).
232 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
233 pap_CW, quz_PE, the_NP.
235 * Substantially revised locales: gd_GB, ht_HT
237 * The LC_ADDRESS field was updated to support country_car for almost all
240 * ISO 1427 definitions were updated.
242 * ISO 3166 definitions were updated.
244 * The localedef utility now supports --big-endian and --little-endian
245 command-line options to generate locales for a different system from that
246 for which the C library was built.
248 * Binary locale files now only depend on the endianness of the system for
249 which they are generated and not on other properties of that system. As a
250 consequence, binary files generated with new localedef may be incompatible
251 with old versions of the GNU C Library, and binary files generated with
252 old localedef may be incompatible with this version of the GNU C Library,
253 in the following circumstances:
255 + Locale files may be incompatible on m68k systems.
257 + Locale archive files (but not separate files for individual locales) may
258 be incompatible on systems where plain "char" is signed.
260 * The configure option --disable-versioning has been removed. Builds with
261 --disable-versioning had not worked for several years.
263 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
264 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
266 * SystemTap probes for malloc have been introduced.
268 * SystemTap probes for slow multiple precision fallback paths of
269 transcendental functions have been introduced.
271 * Support for powerpc64le has been added.
273 * The soft-float powerpc port now supports e500 processors.
275 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
277 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
278 set of header declarations that are enabled by default, even when other
279 feature test macros or compiler options such as -std=c99 would otherwise
280 disable some of those declarations.
282 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
283 conflict with POSIX. The libbsd-compat library (which was a dummy library
284 that did nothing) has also been removed.
286 * Preliminary documentation about Multi-Thread, Async-Signal and
287 Async-Cancel Safety has been added.
289 * Change of ABI data structures for s390 and s390x:
290 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
291 allow for future hardware extensions. All library functions that accept or
292 return these structures were versioned in order to provide backwards
293 compatibility with existing code. However, not all cases can be handled
294 with interface versioning. If an application embeds either structure into
295 another structure and that structure is passed to another compilation unit
296 which expects the newer larger-sized object then any access to the new
297 fields will result in undefined behaviour. Similarly any access to fields
298 that were moved by the enlarging of the structures will cause undefined
299 behaviour. To fix the undefined behaviour all objects that are part of the
300 final in-memory image must agree on the size of structures, and this may
301 require recompilation.
305 * The following bugs are resolved with this release:
307 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
308 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
309 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
310 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
311 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
312 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
313 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
314 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
315 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
316 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
317 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
318 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
319 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
322 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
323 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
324 Distributions can re-enable building and using pt_chown via the new configure
325 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
326 considerable security risks and should only be used if the distribution
327 understands and accepts the risks.
329 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
332 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
333 fixed (Bugzilla #15330).
335 * Add support for calling C++11 thread_local object destructors on thread
336 and program exit. This needs compiler support for offloading C++11
337 destructor calls to glibc.
339 * Improved worst case performance of libm functions with double inputs and
342 * Support for priority inherited mutexes in pthread condition variables on
343 non-x86 architectures.
345 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
347 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
349 * Optimized string functions for ARM. Implemented by Will Newton and
352 * Optimized libm functions for SPARC. Implemented by David S. Miller.
354 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
357 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
358 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
360 * Added a benchmark framework to track performance of functions in glibc.
362 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
363 It is based on draft TS 18661 and currently enabled as a GNU extension.
365 * On Linux, the clock function now uses the clock_gettime system call
366 for improved precision, rather than old times system call.
368 * Added support for version-3 tz format files. This is needed when using
369 the tz database release 2013e or later, and affects a few unusual cases --
370 currently only TZ='America/Godthab' for time stamps after 2037.
372 * Added new API functions pthread_getattr_default_np and
373 pthread_setattr_default_np to get and set the default pthread
374 attributes of a process.
376 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
377 This may improve lock scaling of existing programs on TSX capable systems.
378 When the --enable-lock-elision=yes parameter is specified at configure
379 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
382 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
383 availability). Implemented by Ryan S. Arnold.
385 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
389 * The following bugs are resolved with this release:
391 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
392 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
393 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
394 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
395 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
396 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
397 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
398 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
399 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
400 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
401 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
402 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
403 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
404 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
405 14879, 14889, 14893, 14898, 14914.
407 * Optimization of memcpy for MIPS.
409 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
410 EMFILE has been fixed (Bugzilla #14889).
412 * The add-on ports collection is now distributed in the "ports" subdirectory
413 of the main GNU C Library distribution, rather than separately.
415 * Port to ARM AArch64 contributed by Linaro.
417 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
418 Optimized versions of memcpy, memset, and memcmp added for System z10 and
420 Implemented by Andreas Krebbel.
422 * The new function secure_getenv allows secure access to the environment,
423 returning NULL if running in a SUID/SGID process. This function replaces
424 the internal function __secure_getenv.
426 * SystemTap static probes have been added into the dynamic linker.
427 Implemented by Gary Benson.
429 * Optimizations of string functions strstr, strcasestr and memmem.
430 Implemented by Maxim Kuvyrkov.
432 * The minimum Linux kernel version that this version of the GNU C Library
433 can be used with is 2.6.16.
435 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
436 powerpc POWER7. Implemented by Will Schmidt.
438 * New configure option --disable-nscd builds the C library such that it
439 never attempts to contact the Name Service Caching Daemon (nscd).
440 New configure option --disable-build-nscd avoids building nscd itself;
441 this is the default if --disable-nscd is used.
443 * Improved support for cross-compilation, including cross-testing and
444 bootstrap builds without a previously built glibc.
446 * Several testsuite tests are now able to test multiple IFUNC variants of an
447 interface, rather than just testing the one that would be chooen by
450 * New configure options --with-bugurl and --with-pkgversion, for
451 distributors to use to embed their bug-reporting and package version
452 information in --help and --version output.
454 * The ttyname and ttyname_r functions on Linux now fall back to searching for
455 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
456 allows creation of chroots without the procfs mounted on /proc.
458 * The `crypt' function now fails if passed salt bytes that violate the
459 specification for those values. On Linux, the `crypt' function will
460 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
461 enabled, and fail on encrypted strings using the MD5 or DES algorithm
462 when the mode is enabled.
464 * The `clock_*' suite of functions (declared in <time.h>) is now available
465 directly in the main C library. Previously it was necessary to link with
466 -lrt to use these functions. This change has the effect that a
467 single-threaded program that uses a function such as `clock_gettime' (and
468 is not linked with -lrt) will no longer implicitly load the pthreads
469 library at runtime and so will not suffer the overheads associated with
470 multi-thread support in other code such as the C++ runtime library.
472 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
477 * The following bugs are resolved with this release:
479 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
480 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
481 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
482 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
483 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
484 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
485 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
486 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
487 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
488 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
489 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
490 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
491 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
492 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
493 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
494 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
495 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
496 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
497 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
498 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
499 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
500 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
503 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
504 configuring glibc with:
505 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
506 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
507 Implemented by H.J. Lu.
511 + define static_assert
513 + do not declare gets
515 + declare at_quick_exit and quick_exit also for ISO C11
517 + aligned_alloc. NB: The code is deliberately allows the size parameter
518 to not be a multiple of the alignment. This is a moronic requirement
519 in the standard but it is only a requirement on the caller, not the
524 + uchar.h support added
526 + CMPLX, CMPLXF, CMPLXL added
528 Implemented by Ulrich Drepper.
530 * Support for the IA-64 has been moved to ports.
532 * Remove support for anything but ELF binary format
534 * Checking versions of poll, ppoll added.
535 Implemented by Ulrich Drepper.
537 * More generic and 64-bit performance optimizations to math functions.
538 Implemented by Ulrich Drepper.
540 * New configure option --enable-obsolete-rpc makes the deprecated RPC
541 headers and functions available at compile time as they were before
542 version 2.14. This option will be removed at some time in the future
543 after the TI-RPC library becomes fully sufficient for the needs of
544 existing applications.
546 * Compatibility code for Linux kernel versions before 2.4 has been removed.
547 Note that glibc is not expected to work with any Linux kernel version
550 * New header <sys/auxv.h> and function getauxval allowing easy access to
551 the AT_* key-value pairs passed from the Linux kernel. The header also
552 defines the HWCAP_* bits associated with the AT_HWCAP key.
554 * New locales: mag_IN
556 * New configure option --enable-systemtap builds SystemTap static probes
557 into libc for setjmp and longjmp and into libpthread for various operations.
558 So far the setjmp/longjmp probes and some of the libpthread probes are
559 provided only for i*86 and x86_64.
560 Implemented by Roland McGrath and Rayson Ho.
562 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
564 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
567 * More optimized functions for SPARC. Implemented by David S. Miller.
569 * Improved support for cross-compilation, especially bootstrap builds
570 without a previously built glibc.
572 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
573 Chris Metcalf from Tilera.
575 * Support for the old ARM ABI has been removed from ports. Only the EABI is
576 now supported for ARM processors.
578 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
579 as the name of the dynamic linker, to distinguish it from the
580 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
582 * Support for CRIS has been removed from ports.
584 * A new class of installed header has been documented for low-level
585 platform-specific functionality. PowerPC added the first instance with a
586 function to provide time base register access. Contributed by Tulio
587 Magno Quites Machado Filho.
589 * ix86 configurations now install header files that are consistent with
590 what x86-64 configurations install. These same header files can be used
591 for -m32, -m64, or -mx32 builds.
592 Contributed by H.J. Lu.
594 * Math library bug fixes. A thorough audit of all open math library bugs was
595 conducted by Joseph Myers. Significant progress was made on many math
596 library bugs resulting in more accurate exceptions and function results.
597 Many thanks to all those that contributed including Andreas Jaeger for his
598 patch review and work on the x87 trigonometric instruction issues.
600 * Timezone data is no longer installed. Timezone-related binaries and scripts
601 will continue to be installed. Users should obtain their timezone data from
602 their distribution provider or from the tzdata package at
603 <ftp://munnari.oz.au/pub/>.
607 * The following bugs are resolved with this release:
609 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
610 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
611 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
612 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
613 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
614 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
615 13484, 13506, 13515, 13523, 13524, 13538, 13540
617 * New program pldd to list loaded object of a process
618 Implemented by Ulrich Drepper.
620 * Add nss_db support back to glibc. No more dependency on Berkeley db
621 and support for initgroups lookups.
622 Implemented by Ulrich Drepper.
624 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
625 Contributed by HJ Lu.
627 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
628 Contributed by HJ Lu.
630 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
631 on x86-32 and x86-64.
632 Contributed by Liubov Dmitrieva.
634 * Optimized strchr and strrchr for SSE on x86-32.
635 Contributed by Liubov Dmitrieva.
637 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
638 for x86-64 and x86-32.
639 Contributed by Liubov Dmitrieva.
641 * New interfaces: scandirat, scandirat64
642 Implemented by Ulrich Drepper.
644 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
645 Implemented by Ulrich Drepper.
647 * nscd now also caches the netgroup database.
648 Implemented by Ulrich Drepper.
650 * Integrate libm with gcc's -ffinite-math-only option.
651 Implemented by Ulrich Drepper.
653 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
654 to math functions. Implemented by Ulrich Drepper.
656 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
657 Implemented by Ulrich Drepper.
659 * New Linux interfaces: process_vm_readv, process_vm_writev
661 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
662 Implemented by Ulrich Drepper.
664 * Optimized nearbyint and strcasecmp for PPC.
665 Implemented by Adhemerval Zanella.
667 * New locales: bho_IN, unm_US, es_CU, ta_LK
671 * The following bugs are resolved with this release:
673 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
674 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
675 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
676 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
677 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
678 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
679 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
680 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
681 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
682 12795, 12811, 12813, 12814, 12841
684 * The RPC implementation in libc is obsoleted. Old programs keep working
685 but new programs cannot be linked with the routines in libc anymore.
686 Programs in need of RPC functionality must be linked against TI-RPC.
687 The TI-RPC implementation is IPv6 enabled and there are other benefits.
689 Visible changes of this change include (obviously) the inability to link
690 programs using RPC functions without referencing the TI-RPC library and the
691 removal of the RPC headers from the glibc headers.
692 Implemented by Ulrich Drepper.
694 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
695 syncfs, setns, sendmmsg
697 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
698 yue_HK, lij_IT, mhr_RU
700 * New encodings: CP770, CP771, CP772, CP773, CP774
702 * New program sotruss to trace calls through PLTs
703 Implemented by Ulrich Drepper.
705 * The malloc hook implementation is marked deprecated and will be removed
706 from the default implementation in the next version. The design never
707 worked ever since the introduction of threads. Even programs which do
708 not create threads themselves can use multiple threads created internally.
712 * The following bugs are resolved with this release:
714 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
715 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
716 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
717 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
720 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
722 * POWER7 optimizations: memset, memcmp, strncmp
724 * New optimized string functions for x86-64: strnlen (SSE2),
725 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
726 Implemented by Ulrich Drepper.
730 * The following bugs are resolved with this release:
732 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
733 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
734 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
735 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
736 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
737 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
738 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
739 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
741 * New interfaces: pthread_getname_np, pthread_setname_np
743 * New Linux interface: recvmmsg
745 * STT_GNU_IFUNC implemented for Sparc by David Miller.
747 * The dynamic linker now recognizes supported ABI versions from the
748 EI_ABIVERSION field in the ELF header.
749 Implemented by Ulrich Drepper.
751 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
752 will not be used to fill in password fields in the passwd.byname replies.
753 Instead it is used to synthesize the shadow.byname table, should it be
754 missing. This is a useful mode in some installations involving Solaris.
755 Implemented by Ulrich Drepper.
757 * New locales: kok_IN, sq_MK, cv_RU
761 * The following bugs are resolved with this release:
763 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
764 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
765 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
766 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
767 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
768 10789, 10817, 10823, 10840, 10847
770 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
772 Implemented by Ulrich Drepper.
774 * Checking version of longjmp added that fails if an uninitialized stack
775 frame would be created. Implemented by Ulrich Drepper.
777 * STT_GNU_IFUNC is now supported in static executables.
778 Implemented by H.J. Lu.
780 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
782 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
783 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
784 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
785 Contributed by H.J. Lu.
787 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
788 Implemented by Ulrich Drepper.
790 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
792 Contributed by H.J. Lu.
794 * Support for fma instruction in AVX on x86-64.
795 Implemented by H.J. Lu and Ulrich Drepper.
797 * AVX support in x86-64 auditing support in ld.so.
798 Implemented by H.J. Lu.
800 * STB_GNU_UNIQUE support added.
801 Implemented by Ulrich Drepper.
803 * Implement second fallback mode for optimized DNS lookup for even more
804 broken environments. If two requests from the same port are not
805 handled correctly close the socket and open a new one before sending
806 the second request. The 'single-request-reopen' option in /etc/resolv.conf
807 can be used to select this mode right away, instead of rediscovering the
808 necessity is every process again.
809 Implemented by Ulrich Drepper.
811 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
812 Implemented by Adam Tkac.
814 * Optimized iconv conversions for S390x.
815 Implemented by Andreas Krebbel.
817 * Using condvars with PI mutexes is now more efficient due to kernel
818 support for requeueing to PI futexes. NPTL support added for x86-64.
819 Implemented by Ulrich Drepper.
821 * New locales: ps_AF, my_MM
825 * The following bugs are resolved with this release:
827 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
828 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
829 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
830 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
831 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
833 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
834 Implemented by Ulrich Drepper.
836 * New Linux interfaces: accept4, fallocate, fallocate64.
837 Implemented by Ulrich Drepper.
839 * Correct declarations of string function when used in C++ code. This
840 could lead to compile errors for invalid C++ code.
842 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
845 * New POSIX 2008 interface: psiginfo
846 Implemented by Ulrich Drepper.
848 * New ISO C++1x interfaces: quick_exit, at_quick_exit
849 Implemented by Ulrich Drepper.
851 * Support for selecting between multiple function definitions at runtime
852 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
854 * The libcrypt library can now use the hash function implementations in
855 NSS. Implemented by Ulrich Drepper.
857 * The malloc implementation can be compiled to be less memory efficient
858 but higher performing in multi-threaded programs.
859 Implemented by Ulrich Drepper.
861 * New locales: nan_TW@latin, ks_IN
863 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
864 Implemented by Ulrich Drepper.
866 * Extended printf hook support. It is possible to use user-defined types
867 and extend existing format specifiers.
868 Implemented by Ulrich Drepper.
870 * Handling for group shadow files has been added.
871 Implemented by Ulrich Drepper.
873 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
874 servers (the case, e.g., for some people using the built-in DNS
875 server in ADSL modems/routers). There is a once-per-process timeout
876 in case of a broken server. To avoid it, users can run nscd or put
877 'options single-request' in /etc/resolv.conf.
878 Implemented by Ulrich Drepper.
882 * The following bugs are resolved with this release:
884 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
885 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
886 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
887 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
888 6968, 6974, 6980, 6995, 7008, 7009, 7029
890 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
891 up at the same time. Implemented by Ulrich Drepper.
893 * TLS descriptors for LD and GD on x86 and x86-64.
894 Implemented by Alexandre Oliva.
896 * getaddrinfo now handles DCCP and UDPlite.
897 Implemented by Ulrich Drepper.
899 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
900 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
901 Implemented by Ulrich Drepper.
903 * New implementation of memmem, strstr, and strcasestr which is O(n).
904 Implemented by Eric Blake.
906 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
908 * Implement "e" option for popen to open file descriptor with the
909 close-on-exec flag set. Implemented by Ulrich Drepper.
911 * Implement "b" mode for fmemopen. In this mode writes writes don't
912 implicitly add a NUL byte and seeks from the end of the buffer really
913 use the buffer end, not the string length as the basis.
914 Implemented by Ulrich Drepper.
916 * Many functions, exported and internal, now atomically set the close-on-exec
917 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
919 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
921 Implemented by Pravin Satpute.
923 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
927 * The following bugs are resolved with this release:
929 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
930 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
931 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
932 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
933 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
934 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
935 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
937 * New locales: bo_CN, bo_IN, shs_CA.
939 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
941 * Sorting rules for some Indian languages (Devanagari and Gujarati).
942 Implemented by Pravin Satpute.
944 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
946 * nscd caches now all timeouts for DNS entries
947 Implemented by Ulrich Drepper.
949 * nscd is more efficient and wakes up less often.
950 Implemented by Ulrich Drepper.
952 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
953 vdprintf, and obstack_vprintf.
954 Implemented by Jakub Jelinek.
956 * Faster memset for x86-64.
957 Implemented by Harsha Jagasia and H.J. Lu.
959 * Faster memcpy on x86.
960 Implemented by Ulrich Drepper.
962 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
963 Implemented by Ulrich Drepper.
965 * Faster sqrt and sqrtf implemention for some PPC variants.
966 Implemented by Steven Munroe.
970 * The following bugs are resolved with this release:
972 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
973 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
974 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
975 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
976 5071, 5103, 5104, 5112, 5113, 5184, 5186
978 * More checking functions: fread, fread_unlocked, open*, mq_open.
979 Implemented by Jakub Jelinek and Ulrich Drepper.
981 * Extend fortification to C++. Implemented by Jakub Jelinek.
983 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
984 by not recognizing 'a' as a modifier when those specs are requested.
985 Implemented by Jakub Jelinek.
987 * PPC optimizations to math and string functions.
988 Implemented by Steven Munroe.
990 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
991 options to be passed. Implemented by Ulrich Drepper.
993 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
995 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
996 Implemented by Ulrich Drepper.
998 * Handle private futexes in the NPTL implementation.
999 Implemented by Jakub Jelinek and Ulrich Drepper.
1001 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
1002 Implemented by Roland McGrath and Ulrich Drepper.
1004 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
1006 * SHA-256 and SHA-512 based password encryption.
1007 Implemented by Ulrich Drepper.
1009 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
1010 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
1013 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
1014 Implemented by Ulrich Drepper.
1018 * The following bugs are resolved with this release:
1020 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1021 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1022 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1023 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1024 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1025 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1026 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1029 * New Linux interfaces: epoll_pwait, sched_getcpu.
1031 * New generic interfaces: strerror_l.
1033 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1037 * The following bugs are resolved with this release:
1039 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1040 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1041 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1042 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1043 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1044 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1045 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1046 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1047 3225, 3251, 3252, 3253, 3273
1049 * For Linux, the sorting of addresses returned by getaddrinfo now also
1050 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1051 Implemented by Ulrich Drepper.
1053 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1054 Implemented by Ulrich Drepper.
1056 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1058 * New iconv module for MIK. Contributed by Alexander Shopov.
1060 * For sites with broken group and/or passwd database, the auto-propagate
1061 option of nscd can prevent creating ID lookup entries from the results
1062 of a name lookup and vice versa. This usually is no problem but some
1063 site might have problems with the default behavior.
1064 Implemented by Ulrich Drepper.
1066 * Iterating over entire database in NIS can be slow. With the
1067 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1068 to trade time for memory. The entire database will be read at once.
1069 Implemented by Ulrich Drepper.
1071 * The interfaces introduced in RFC 3542 have been implemented by
1074 * Support for the new ELF hash table format was added by Ulrich Drepper.
1076 * Support for priority inheritance mutexes added by Jakub Jelinek and
1079 * Support for priority protected mutexes added by Jakub Jelinek.
1081 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1082 or_IN, csb_PL, fy_NL, sr_ME.
1086 * More overflow detection functions.
1088 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1089 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1091 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1092 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1093 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1094 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1095 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1096 by Masahide Washizawa.
1098 * It is now possible to install audit libraries for the dynamic linker using
1099 LD_AUDIT. Implemented by Ulrich Drepper.
1101 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1102 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1103 For a libc and libpthread that works well on Linux 2.4 kernels, we
1104 recommend using the stable 2.3 branch.
1106 * The new function open_wmemstream acts like open_memstream,
1107 but uses a wchar_t wide character buffer.
1109 * The new function ppoll is an improved version of poll, similar to pselect.
1111 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1112 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1113 renameat, unlinkat, linkat, symlinkat, readlinkat.
1115 * New Linux kernel system calls: unshare,
1116 inotify_init, inotify_add_watch, inotify_rm_watch.
1118 * The euidaccess function is now also known by the alias eaccess,
1119 for compatibility with some other systems.
1121 * Timezone data updated to 2006b version.
1125 * The following bugs are resolved with this release:
1127 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1128 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1129 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1130 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1131 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1132 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1134 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1136 * As of this release, GCC 4 can be used to compile the C Library.
1138 * Timezone data updated to 2005m version.
1142 * The following bugs are resolved with this release:
1144 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1145 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1146 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1147 777, 787, 821, 822, 823, 825
1149 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1153 * Support for RFC 3678. Real implementations exist only for Linux so far.
1154 Implemented by Ulrich Drepper.
1156 * nscd can now cache entries persistently. Expiring entries are reloaded.
1157 For speedups the cache can be shared in memory with client processes.
1158 Implemented by Ulrich Drepper.
1160 * nscd can now perform SELinux checks.
1161 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1163 * getaddrinfo queries are now cached. Canonical name lookup is performed
1165 Implemented by Ulrich Drepper.
1167 * The nothrow function attribute is used when headers are used by gcc when
1168 compiling C code. This can avoid significant amounts of exception
1171 * The malloc functions perform more error checking and are stricter when
1172 it comes to reacting on errors. The default action is to terminate
1173 the process after showing an error message. Implemented by Ulrich Drepper.
1175 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1176 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1178 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1179 namespaces using the new function dlmopen(). This feature is of course,
1180 like most other dynamic loading functionality, not available in statically
1181 linked applications. Implemented by Ulrich Drepper.
1183 * Low-overhead boundary checking variants of string and some stdio functions
1184 were added. These are to be used in conjunction with a gcc patch by
1185 Jakub Jelinek which adds calls to these functions if possible.
1186 Implemented by Jakub Jelinek and Ulrich Drepper.
1188 * Old code for several operating systems and machine architectures that
1189 have not been in working condition in a long time have been removed from
1190 the main source tree maintained by the GNU C Library's maintainers.
1191 These files are now reside in the separate `ports' source module
1192 that is usable as an add-on when building the library.
1196 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1197 interrogate the dynamic linker, compatible with the Solaris interface.
1199 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1200 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1202 * getifaddrs now uses the netlink interface on Linux to get its information.
1203 Implemented by Thorsten Kukuk.
1205 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1206 Implemented by Ulrich Drepper.
1208 * support for non-executable stacks on x86 has been added. Changes mostly
1211 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1214 * getaddrinfo now performs destination address selection according to
1219 * Thread-safe interfaces for many functions that access locale data
1220 were added in version 2.3, but these features were omitted from NEWS.
1221 Many functions have variants with an `_l' suffix that take a `locale_t'
1222 object as a parameter rather than consulting the current locale.
1223 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1224 create and maintain `locale_t' objects. Additionally, the new function
1225 `uselocale' sets "the current locale" (as used by functions not so
1226 parameterized) set for an individual thread. These features were added
1227 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1229 * The functions getresuid, getresgid, setresuid, and setresgid, which
1230 have long been available on Linux, are now declared in <unistd.h>
1231 and are now also available on the Hurd.
1233 * ELF thread-local storage support (TLS) now works on x86-64.
1235 * The new dynamic string token $LIB is expanded in shared library names.
1236 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1238 * Aldy Hernandez contributed complete software floating point support for
1239 PowerPC machines with no FPU.
1241 * fexecve is implemented on Linux.
1243 * The `btowc' function should work at least twice as fast due to
1244 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1246 * With approriate thread add-ons cancelable functions are now implemented
1247 in libc.so as well. No need to call the function in libpthread. This
1248 change allowed to finally disable the incorrect and expensive handling
1249 of weak definition in ld.so.
1251 * Yet more PLT entries in libc.so have been removed. We finally arrived
1252 at the bare minimum. Startup times improved appropriately.
1254 * Support for the new Linux/x86 system call interface was added. The
1255 AT_SYSINFO auxiliary vector entry is recognized and handled.
1259 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1262 * iconv (the program and the interface) now accepts empty names (excluding
1263 options like //TRANSLIT) to mean "use charset of current locale".
1265 * localedef can now transliterate characters in strings which are not in
1266 the provided charmap. The information from the input locale is used.
1268 * Prelinking support was added for ELF targets. This requires additional
1269 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1271 * Read-only stdio streams now use mmap to speed up operation by eliminating
1272 copying and buffer underflows. To use add 'm' to the mode string of
1273 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1275 * The malloc functions were completely rewritten by Wolfram Gloger based
1276 on Doug Lea's malloc-2.7.0.c.
1278 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1279 implementation of regex.
1281 * Bruno Haible upgraded the iconv and locale implementation to support
1284 * Contents of the LC_* and LANG environment variables in the CEN style are
1285 not recognized anymore. It never was used. Change by Ulrich Drepper.
1287 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1288 thread-local storage (TLS) ABI on some platforms.
1289 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1291 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1292 EUC-JISX0213, and TSCII.
1294 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1295 BSD-compatible interface for getting all network interface addresses.
1296 Implementation for IPv4 by Roland McGrath.
1298 * Loading of locale data is faster due to the introduction of a locale
1299 archive. Implemented by Roland McGrath and Ulrich Drepper.
1301 * Startup times are significantly reduced by not using exported functions
1302 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1305 * Steven Munroe contributed a port to PowerPC64/Linux.
1309 * The Hurd now uses the GNU libio implementation of stdio rather than the
1310 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1312 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1313 with the same behavior as the Linux system call of the same name.
1317 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1318 128-bit long double format.
1320 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1321 IBM1161, and IBM1162 charsets.
1323 * Andreas Jaeger contributed a port to x86-64/Linux.
1325 * Peter Bruin contributed a port to PowerPC/Hurd.
1327 * libc functions using I/O streams now can handle wide-oriented streams
1330 * optimizations in the dynamic linker. Binaries created by recent binutils
1331 versions start up quicker due to reduced time spent on relocations.
1333 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1337 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1338 asinh, atanh, j0 for the 128-bit long double format.
1340 * Bruno Haible updated all the code handling Unicode in some form to
1341 support Unicode 3.1.
1343 * Speed of regex for single-byte locales is back to previous levels.
1344 Patch by Isamu Hasegawa.
1346 * Alpha, SPARC, and IA-64 now also using floating stacks.
1348 * Startup time of internationalized applications greatly improved through
1349 iconv cache. Use iconvconfig to generate the cache file.
1350 Contributed by Ulrich Drepper.
1352 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1353 severe performance problems. Patch by David Mosberger.
1355 * The Hurd port got a lot more functionality like AIO, various stdio
1356 extensions, etc. Mainly done by Roland McGrath.
1358 * mtrace can now lookup symbols in shared libraries.
1362 * Intel's IA-64 math library is largely integrated. It provides fast and
1363 accurate implementatations for most basic and standard math functions
1364 in float, double, and long double format.
1366 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1367 and asin for the 96-bit long double format and asin, log, tan for the
1368 128-bit long double format.
1370 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1371 The basic double functions exist today. Contributed by Abraham Ziv
1372 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1373 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1375 * An asynchronous name lookup library was added. The interface is designed
1376 after POSIX AIO. The proposal was circulated beforehand to get comments.
1377 No negative ones came in. Implemented by Ulrich Drepper.
1379 * Port to S390/64bit contributed by Martin Schwidefsky
1380 <schwidefsky@de.ibm.com>.
1382 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1383 of functions for Linux/IA-64.
1385 * The RPC code is now thread safe. Threads can now use the same service
1386 of different services at the same time. Patch by Eric Norum
1387 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1389 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1390 family of functions for Linux/S390.
1392 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1393 of functions for Linux/x86.
1395 * Port to Linux/CRIS contributed by Axis Communications.
1399 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1400 we can now check for namespace violations and missing declarations. The
1401 result is that almost all headers are now Unix-compliant (as defined in
1402 the upcoming XPG6). The negative side is that some programs might need
1403 corrections, too, if they depend on the incorrect form of the headers in
1404 previous versions which defined too many symbols and included too many
1407 * regex now handles multibyte character sets correctly.
1408 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1410 * iconv (the program) does now conform to the upcoming XPG6 and handles
1411 charmaps. Instead of the charset names the path of charmaps can be
1412 provided and the conversion happens based on this data.
1413 Contributed by Ulrich Drepper.
1415 * The locale program now provides detailed information about the installed
1420 only lists the names of the supported locales
1424 provides details such as country, language, and codeset name.
1425 Contributed by Ulrich Drepper.
1429 * The gencat program now parses the input file according to the charset
1430 selected by the LC_CTYPE category. This is important for stateful
1431 character sets. To make generating catalogs easier there is a way
1432 to overwrite the charset selected by the locale: before the first
1433 message or $ quote line the catalog can contain a line like
1435 $ codeset=ISO-8859-2
1437 to select the charset (ISO-8859-2 in this case).
1439 Implemented by Shinya Hanataka and Ulrich Drepper.
1441 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1442 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1443 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1445 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1446 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1448 * The LANGUAGE environment variable is now ignored unless the locale is
1449 changed from the default "C" locale.
1451 * The usual bug fixes.
1455 * Greg McGary added runtime support for bounds checking using gcc's
1456 new -fbounded-pointers option. ix86 target is complete. PowerPC
1459 * Thorsten Kukuk added secure mode support to nscd.
1461 * The Berkeley db libraries have been removed.
1463 Related, the nss_db module is now in a separate package since it
1464 obviously requires a database library being available.
1466 * Wide character I/O streams implemented by Ulrich Drepper.
1468 * Functions from the extended socket API added by Ulrich Drepper.
1470 * Functions feenableexcept and fedisableexcept to control the
1471 behaviour of individual exceptions have been added by Andreas Jaeger.
1473 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1475 * The resolver code has been updated from bind 8.2.3-T5B which supports
1476 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1479 This change could in some situations effect backward compatibility. Since
1480 now `_res' is a thread-local instead of a global variable, modifying it
1481 in one thread does not have any effect in other threads.
1483 The resolver library was also extended to allow IPv6 as the transport
1484 protocol for the requests. This work was done by Stig Venaas.
1486 * Compatibility code for K&R C compilers has been removed from the
1487 header files. A ISO C compiler is needed to use the library
1488 (conforming to either C89 or C99 standard).
1490 * Complete rewrite of the localedef program to support multibyte character
1491 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1492 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1493 Implemented by Ulrich Drepper.
1495 Bruno Haible significantly improved the generation and use of the data
1496 structures for the wide character tables.
1498 * Plural handling in gettext implemented by Ulrich Drepper.
1500 * The utmp daemon has been removed.
1502 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1504 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1507 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1509 * POSIX barriers implemented by Kaz Kylheku.
1511 * POSIX spawn function family implemented by Ulrich Drepper.
1513 * POSIX spinlocks are now available.
1515 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1517 * the configure option --enable-kernel=X.Y.Z allows to strip out
1518 compatibility for kernel versions before X.Y.Z. This is currently only
1519 implemented for Linux.
1521 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1522 field sin6_scope_id. This means that all programs using IPv6 should be
1523 recompiled. Don't expect binary compatibility with previous glibc
1526 * various conversion modules for IBM character sets contributed by
1529 * IA-64 port by Jes Sorensen and HJ Lu.
1543 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1545 * New xdr functions are added; some rpc functions are now 64bit clean.
1547 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1549 * Fixed known incompatibilities with glibc 2.0.
1551 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1553 * Optimized a number of functions (especially the ELF dynamic loader).
1555 * Update timezone data files.
1557 * lots of charmaps corrections
1559 * some new locale definitions and charmaps
1564 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1565 conform to POSIX member type requirements. Symbol versions have been
1566 adjusted as needed within the library, and for direct use by applications,
1567 but there is potential for problems if third-party libraries use
1568 struct timeval as part of their interface. This does not present
1569 a problem for X and other "essential" system libraries.
1571 * An additional locale model to support C++ Standard Library locale
1572 model and probably more was implemented by Ulrich Drepper.
1574 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1577 * Miles Bader provided the `argp' function family to support hierachical
1578 command line argument parsing, layered on top of getopt.
1580 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1582 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1585 * scanf recognizes the %a and %A format for scanning floating point numbers.
1587 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1588 information and interfaces for the available integer types.
1590 * about 130 new math functions were added to implement the ISO C9x math
1593 * the new header <complex.h> contains definitions of the complex math
1594 functions from ISO C 9X.
1596 * the new header <tgmath.h> defines generic macros to use complex or
1597 real valued functions.
1599 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1601 * Andreas Jaeger provided a test suite for the math library.
1603 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1605 * Ulrich Drepper added character set conversion functions (iconv).
1607 * Optimized string functions have been added.
1609 * The localedata addon is now part of glibc.
1611 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1613 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1614 daemon for NSS (nscd).
1616 Missing a better place here are some numbers on improvements. Under
1617 Linux 2.1.125 un-tar-ing the kernel sources takes
1621 using local files 12.19s 6.88s 22.91s
1623 using NIS 13.92s 8.91s 26.34s
1625 using NIS & nscd 10.37s 7.34s 25.30s
1627 using NIS+ 27.57s 30.37s 640.46s
1629 using NIS+ & nscd 10.25s 7.83s 26.51s
1631 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1633 Keep in mind that non-namelookup related operations dominate above times.
1634 It was just a common complain that using NIS+ unpacking the kernel is
1637 [1] The old nscd implementation is not available anymore since it was
1638 distributed with glibc up to version 2.0.98 and thus is now replaced.
1640 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1642 * Mark Kettenis provided a Hesiod NSS module.
1644 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1645 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1647 * rcmd can now handle netgroups (Dick Streefland).
1649 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1652 * Support for the IPv6 protocol has been added to the socket API, as per the
1653 latest draft standards.
1655 * Support for Linux 2.2 has been added.
1657 * Interface changes relative to the latest 2.0.x release:
1658 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1659 addseverity NEW: Unix98
1660 alphasort64 NEW: LFS
1661 argp_err_exit_status NEW: argp, GNU ext
1662 argp_error NEW: argp, GNU ext
1663 argp_failure NEW: argp, GNU ext
1664 argp_help NEW: argp, GNU ext
1665 argp_parse NEW: argp, GNU ext
1666 argp_program_bug_address NEW: argp, GNU ext
1667 argp_program_version NEW: argp, GNU ext
1668 argp_program_version_hook NEW: argp, GNU ext
1669 argp_state_help NEW: argp, GNU ext
1670 argp_usage NEW: argp, GNU ext
1671 authdes_create NEW: Secure RPC
1672 authdes_getucred NEW: Secure RPC
1673 authdes_pk_create NEW: Secure RPC
1674 backtrace NEW: GNU ext.
1675 backtrace_symbols NEW: GNU ext.
1676 backtrace_symbols_fd NEW: GNU ext.
1678 cacosf NEW: ISO C 9x
1679 cacosh NEW: ISO C 9x
1680 cacoshf NEW: ISO C 9x
1681 cacoshl NEW: ISO C 9x
1682 cacosl NEW: ISO C 9x
1689 casinf NEW: ISO C 9x
1690 casinh NEW: ISO C 9x
1691 casinhf NEW: ISO C 9x
1692 casinhl NEW: ISO C 9x
1693 casinl NEW: ISO C 9x
1695 catanf NEW: ISO C 9x
1696 catanh NEW: ISO C 9x
1697 catanhf NEW: ISO C 9x
1698 catanhl NEW: ISO C 9x
1699 catanl NEW: ISO C 9x
1700 cbc_crypt NEW: Secure RPC
1704 ccoshf NEW: ISO C 9x
1705 ccoshl NEW: ISO C 9x
1711 cimagf NEW: ISO C 9x
1712 cimagl NEW: ISO C 9x
1713 clearerr_locked REMOVED
1714 clntunix_create NEW: sunrpc ext
1716 clog10 NEW: ISO C 9x
1717 clog10f NEW: ISO C 9x
1718 clog10l NEW: ISO C 9x
1728 cprojf NEW: ISO C 9x
1729 cprojl NEW: ISO C 9x
1731 crealf NEW: ISO C 9x
1732 creall NEW: ISO C 9x
1737 csinhf NEW: ISO C 9x
1738 csinhl NEW: ISO C 9x
1741 csqrtf NEW: ISO C 9x
1742 csqrtl NEW: ISO C 9x
1746 ctanhf NEW: ISO C 9x
1747 ctanhl NEW: ISO C 9x
1749 des_setparity NEW: Secure RPC
1750 ecb_crypt NEW: Secure RPC
1751 endutxent NEW: Unix98
1753 exp10f NEW: ISO C 9x
1754 exp10l NEW: ISO C 9x
1758 fattach NEW: STREAMS
1759 fdetach NEW: STREAMS
1763 feclearexcept NEW: ISO C 9x
1764 fegetenv NEW: ISO C 9x
1765 fegetexceptflag NEW: ISO C 9x
1766 fegetround NEW: ISO C 9x
1767 feholdexcept NEW: ISO C 9x
1769 feraiseexcept NEW: ISO C 9x
1770 ferror_locked REMOVED
1771 fesetenv NEW: ISO C 9x
1772 fesetexceptflag NEW: ISO C 9x
1773 fesetround NEW: ISO C 9x
1774 fetestexcept NEW: ISO C 9x
1775 feupdateenv NEW: ISO C 9x
1776 fflush_locked REMOVED
1780 fgets_unlocked NEW: GNU ext.
1781 fileno_locked REMOVED
1793 fputc_locked REMOVED
1794 fputs_unlocked NEW: GNU ext.
1795 fread_unlocked NEW: GNU ext.
1800 fstatvfs NEW: Unix98
1804 ftruncate64 NEW: LFS
1806 fwrite_unlocked NEW: GNU ext.
1807 gai_strerror NEW: IPv6
1811 getchar_locked REMOVED
1813 getdate_err NEW: Unix98
1814 getdate_r NEW: GNU ext.
1816 getnameinfo NEW: IPv6
1817 getnetname NEW: Secure RPC
1818 getpmsg NEW: STREAMS
1819 getpt NEW: Unix98 PTY
1820 getrlimit64 NEW: LFS
1821 getutxent NEW: Unix98
1822 getutxid NEW: Unix98
1823 getutxline NEW: Unix98
1824 glob64 NEW: GNU ext.
1825 globfree64 NEW: GNU ext.
1826 gnu_get_libc_release NEW: GNU ext.
1827 gnu_get_libc_version NEW: GNU ext.
1828 grantpt NEW: Unix98 PTY
1829 host2netname NEW: Secure RPC
1831 iconv_close NEW: iconv
1832 iconv_open NEW: iconv
1833 if_freenameindex NEW: IPv6
1834 if_indextoname NEW: IPv6
1835 if_nameindex NEW: IPv6
1836 if_nametoindex NEW: IPv6
1837 in6addr_any NEW: IPv6
1838 in6addr_loopback NEW: IPv6
1839 inet6_isipv4mapped NEW: IPv6
1840 isastream NEW: STREAMS
1841 iswblank NEW: GNU ext.
1842 key_decryptsession NEW: Secure RPC
1843 key_decryptsession_pk NEW: Secure RPC
1844 key_encryptsession NEW: Secure RPC
1845 key_encryptsession_pk NEW: Secure RPC
1846 key_gendes NEW: Secure RPC
1847 key_get_conv NEW: Secure RPC
1848 key_secretkey_is_set NEW: Secure RPC
1849 key_setnet NEW: Secure RPC
1850 key_setsecret NEW: Secure RPC
1851 llrint NEW: ISO C 9x
1852 llrintf NEW: ISO C 9x
1853 llrintl NEW: ISO C 9x
1854 llround NEW: ISO C 9x
1855 llroundf NEW: ISO C 9x
1856 llroundl NEW: ISO C 9x
1861 lrintf NEW: ISO C 9x
1862 lrintl NEW: ISO C 9x
1863 lround NEW: ISO C 9x
1864 lroundf NEW: ISO C 9x
1865 lroundl NEW: ISO C 9x
1867 makecontext NEW: Unix98
1868 mempcpy NEW: GNU ext.
1871 modify_ldt NEW: kernel
1875 nearbyint NEW: ISO C 9x
1876 nearbyintf NEW: ISO C 9x
1877 nearbyintl NEW: ISO C 9x
1878 netname2host NEW: Secure RPC
1879 netname2user NEW: Secure RPC
1880 nexttoward NEW: ISO C 9x
1881 nexttowardf NEW: ISO C 9x
1882 nexttowardl NEW: ISO C 9x
1886 passwd2des NEW: Secure RPC
1888 pow10f NEW: GNU ext.
1889 pow10l NEW: GNU ext.
1892 printf_size NEW: GNU ext.
1893 printf_size_info NEW: GNU ext.
1894 profil_counter REMOVED
1895 pthread_mutexattr_getkind_np REPLACED
1896 pthread_mutexattr_setkind_np REPLACED
1897 ptsname NEW: Unix98 PTY
1898 ptsname_r NEW: Unix98 PTY
1900 putchar_locked REMOVED
1901 putgrent NEW: GNU ext.
1903 putpmsg NEW: STREAMS
1904 pututxline NEW: Unix98
1908 readdir64_r NEW: LFS
1909 remquo NEW: ISO C 9x
1910 remquof NEW: ISO C 9x
1911 remquol NEW: ISO C 9x
1913 roundf NEW: ISO C 9x
1914 roundl NEW: ISO C 9x
1916 scalbln NEW: ISO C 9x
1917 scalblnf NEW: ISO C 9x
1918 scalblnl NEW: ISO C 9x
1920 sendfile NEW: kernel
1921 setcontext NEW: Unix98
1922 setrlimit64 NEW: LFS
1923 setutxent NEW: Unix98
1925 sigignore NEW: Unix98
1926 sigqueue NEW: POSIX.1b
1927 sigrelse NEW: Unix98
1928 sigset NEW: POSIX.1b
1929 sigtimedwait NEW: POSIX.1b
1930 sigwaitinfo NEW: POSIX.1b
1931 sincos NEW: GNU ext.
1932 sincosf NEW: GNU ext.
1933 sincosl NEW: GNU ext.
1937 strcasestr NEW: GNU ext.
1938 strtoimax NEW: ISO C 9x
1939 strtoumax NEW: ISO C 9x
1940 strverscmp NEW: GNU ext.
1941 svcauthdes_stats NEW: Secure RPC
1942 svcunix_create NEW: sunrpc etx
1943 svcunixfd_create NEW: sunrpc ext
1944 swapcontext NEW: Unix98
1945 tcgetsid NEW: Unix98 PTY
1946 tdestroy NEW: GNU ext.
1947 tgamma NEW: ISO C 9x
1948 tgammaf NEW: ISO C 9x
1949 tgammal NEW: ISO C 9x
1953 truncf NEW: ISO C 9x
1954 truncl NEW: ISO C 9x
1956 unlockpt NEW: Unix98 PTY
1957 updwtmpx NEW: Unix98
1958 user2netname NEW: Secure RPC
1959 utmpxname NEW: Unix98
1960 versionsort NEW: GNU ext.
1961 versionsort64 NEW: GNU ext.
1963 wcscasecmp NEW: GNU ext.
1964 wcsncasecmp NEW: GNU ext.
1965 wcsnlen NEW: GNU ext.
1966 wcstoimax NEW: ISO C 9x
1967 wcstoll NEW: ISO C 9x
1968 wcstoull NEW: ISO C 9x
1969 wcstoumax NEW: ISO C 9x
1971 wordexp NEW: POSIX.2
1972 wordfree NEW: POSIX.2
1973 write_profiling REMOVED
1974 xdecrypt NEW: Secure RPC
1975 xdr_authdes_cred NEW: Secure RPC
1976 xdr_authdes_verf NEW: Secure RPC
1977 xdr_cryptkeyarg NEW: Secure RPC
1978 xdr_cryptkeyarg2 NEW: Secure RPC
1979 xdr_cryptkeyres NEW: Secure RPC
1980 xdr_getcredres NEW: Secure RPC
1981 xdr_key_netstarg NEW: Secure RPC
1982 xdr_key_netstres NEW: Secure RPC
1983 xdr_keybuf NEW: Secure RPC
1984 xdr_keystatus NEW: Secure RPC
1985 xdr_netnamestr NEW: Secure RPC
1986 xdr_sizeof NEW: Secure RPC
1987 xdr_unixcred NEW: sunrpc ext
1988 xencrypt NEW: Secure RPC
1989 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2000 * inet_ntoa is thread-safe
2002 * updwtmp is moved from libutil to libc
2004 * rewrite of cbrt function
2006 * update of timezone data
2020 * add atoll function
2022 * fix complex problems in Berkeley DB code
2024 * fix math functions
2028 * fixed lots of header problems (especially Linux/GNU specific)
2030 * dynamic loader preserves all registers
2032 * Roland McGrath provided support for handling of auxiliary objects in
2033 the ELF dynamic loader.
2035 * support for parallel builds is improved
2039 * GNU extensions are no longer declared by default. To enable them you
2040 must define the macro `_GNU_SOURCE' in your program or compile with
2043 * The library has changed from using GNU ld symbol aliases to using weak
2044 symbols where available. The ELF object file format supports weak
2045 symbols; GNU ld also supports weak symbols in the a.out format. (There
2046 is also now support for other GNU ld extensions in ELF. Use the
2047 `--with-elf' option to configure to indicate you have ELF, and
2048 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2049 of many files which contained only symbol aliases, reducing the size of
2050 the source and the compiled library; many other files were renamed to
2051 less cryptic names previously occupied by the symbol alias files.
2052 There is a new header file <elf.h> for programs which operate on
2053 files in the ELF format.
2055 * Converted to Autoconf version 2, so `configure' has more options.
2056 Run `configure --help' to see the details.
2058 * The library can now be configured to build profiling, highly-optimized
2059 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2060 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2061 `configure' enable building these extra libraries. The shared library is
2062 built by default when using both ELF and GNU ld. When shared libraries
2063 are enabled, the new library `-ldl' is available for arbitrary run-time
2064 loading of shared objects; its interface is defined in <dlfcn.h>. The
2065 new header file <link.h> gives access to the internals of the run-time
2066 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2067 application of same name on other systems and it provides information
2068 about dynamically linked binaries.
2070 * The C library now provides the run-time support code for profiling
2071 executables compiled with `-pg'. Programs can control the profiling code
2072 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2073 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2074 the support for this file format was contributed by David Mosberger-Tang.
2076 * The math code has been replaced with a math library based on fdlibm from
2077 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2078 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2079 functions. The math functions now reside in a separate library, so
2080 programs using them will need to use `-lm' their linking commands.
2082 * John C. Bowman contributed optimized ix87 assembler inline functions.
2084 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2085 mechanism similar to that found in Solaris 2. This is now used for the
2086 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2087 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2088 file controls what services are used for each individual database. This
2089 works by loading shared libraries with names specified in `nsswitch.conf',
2090 so service modules can be changed or added at any time without even
2091 relinking any program. Currently there are the file, db, and NIS based
2092 NSS services available.
2094 * The new functions `strtoq' and `strtouq' parse integer values from
2095 strings, like `strtol' and `strtoul', but they return `long long int' and
2096 `unsigned long long int' values, respectively (64-bit quantities).
2098 * The new functions `strtof' and `strtold' parse floating-point values from
2099 strings, like `strtod', but they return `float' and `long double' values,
2100 respectively (on some machines `double' and `long double' are the same).
2102 * Ulrich Drepper has contributed new implementations of the floating-point
2103 printing and reading code used in the `printf' family of functions and
2104 `strtod', `strtof', and `strtold'. These new functions are perfectly
2105 accurate, and much faster than the old ones.
2107 * The implementation of the POSIX locale model was completely rewritten by
2108 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2109 to compile the POSIX locale definition.
2111 * The former dummy implementations of the strcoll and strxfrm function are
2112 now replaced by fully functional code contributed by Ulrich Drepper. The
2113 collation information comes from the POSIX locale definitions.
2115 * The new header <langinfo.h> defines an interface for accessing
2116 various locale-dependent data (using the locale chosen with `setlocale').
2118 * Ulrich Drepper has contributed a new suite of functions for operation on
2119 wide-character and multibyte-character strings, in <wchar.h>;
2120 and classification and case conversion of wide characters, in <wctype.h>.
2121 These new functions are conforming to the ISO C, Amendement 1 specification.
2123 * There is now a second implementation of the standard I/O library available.
2124 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2125 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2127 * You can now use positional parameter specifications in format strings
2128 for the `printf' and `scanf' families of functions. For example,
2129 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2130 ``Number 6, Mr Jones''. This is mainly useful when providing different
2131 format strings for different languages, whose grammars may dictate
2132 different orderings of the values being printed. To support this
2133 feature, the interface for `register_printf_handler' has changed; see
2134 the header file <printf.h> for details.
2136 * The `printf' and `scanf' families of functions now understand a new
2137 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2138 to group numbers as indicated by the locale; for `scanf' and friends, this
2139 says to accept as valid only a number with all the proper grouping
2140 separators in the right places. In the default "C" locale, numbers are
2141 not grouped; but locales for specific countries will define the usual
2142 conventions (i.e. separate thousands with `,' in the US locale).
2144 * The pgrp functions have been regularized, slightly incompatibly but much
2145 less confusingly. The core functions are now `getpgid' and `setpgid',
2146 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2147 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2148 provided for compatibility. There is no longer an incompatible `getpgrp'
2149 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2151 * The new header file <fts.h> and suite of functions simplify programs that
2152 operate on directory trees. This code comes from 4.4 BSD.
2154 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2155 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2156 NSS scheme used in glibc.
2158 * There is a new malloc debugging hook `__memalign_hook'.
2160 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2161 `unsigned int' in <sys/types.h>. These are for compatibility only and
2162 their use is discouraged.
2164 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2165 done differently, so that it works even without GNU ld.
2167 * New function `euidaccess' checks allowed access to a file like `access',
2168 but using the effective IDs instead of the real IDs.
2170 * The time zone data files have been updated for the latest and greatest
2171 local time conventions of the countries of the world.
2173 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2176 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2177 for formatting floating-point numbers. They are provided only for
2178 compatibility; new programs should use `sprintf' instead. There are
2179 also equivalent function for the `long double' floating-point type and
2180 all functions also exist in a reentrant form.
2182 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2183 functions for maintaining the login-record files (primarily of use to
2184 system programs such as `login'), and convenient functions for
2185 allocating and initializing a pseudo-terminal (pty) device.
2187 * Ulrich Drepper has contributed new support for System V style
2188 shared memory and IPC on systems that support it.
2190 * Ulrich Drepper has contributed several miscellaneous new functions found
2191 in System V: The `hsearch' family of functions provide an effective
2192 implementation of hash tables; `a64l' and `l64a' provide a very simple
2193 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2196 * Ulrich Drepper has contributed new reentrant counterparts for the
2197 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2199 * Ulrich Drepper has contributed new, highly-optimized versions of several
2200 string functions for the i486/Pentium family of processors.
2202 * Ulrich Drepper has updated the Linux-specific code, based largely
2203 on work done in Hongjiu Lu's version of GNU libc for Linux.
2204 The GNU library now supports Linux versions 2.0.10 and later,
2205 using the ELF object file format (i[3456]86-*-linux).
2207 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2209 * David Mosberger-Tang and Richard Henderson have ported the C library
2210 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2211 dynamic linking support for ELF/Alpha.
2213 * Richard Henderson contributed several Alpha optimized assembler function
2214 for arithmetic and string handling.
2216 * Ulrich Drepper has contributed a new set of message catalog functions to
2217 support multiple languages using the <libintl.h> interface, for use with
2218 his new package GNU gettext. Translation volunteers have contributed
2219 catalogs of the library's messages in Spanish, German, and Korean.
2221 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2222 program and the `catgets' function for reading the catalog files it
2223 creates. (The <libintl.h> interface is preferred; we include the
2224 <nl_types.h> interface using `catgets' only for source compatibility with
2225 programs already written to use it.)
2227 * New header file <values.h> gives SVID-compatible names for <limits.h>
2230 * Various new macros, declarations, and small header files for compatibility
2233 * New function `group_member' is a convenient way to check if a process has
2234 a given effective group ID.
2236 * When using GCC 2.7 and later, the socket functions are now declared in a
2237 special way so that passing an argument of type `struct sockaddr_in *',
2238 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2239 `struct sockaddr *' type, does not generate a type-clash warning.
2241 * New function `error' declared in header file <error.h> is a convenient
2242 function for printing error messages and optionally exiting; this is the
2243 canonical function used in GNU programs. The new functions `err', `warn',
2244 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2245 doing the same thing.
2247 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2248 POSIX.2 `glob' function to do ~ and {...} expansion.
2250 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2251 `clearenv' which is used in POSIX.9 is also available.
2253 * New function `getsid' returns session ID number on systems that support it.
2255 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2256 files <db.h> and <mpool.h> provide a rich set of functions for several
2257 types of simple databases stored in memory and in files, and <ndbm.h> is
2258 an old `ndbm'-compatible interface using the `db' functions. Link with
2259 `-ldb' to get these functions.
2261 * New macro `strdupa' copies a string like `strdup', but uses local stack
2262 space from `alloca' instead of dynamic heap space from `malloc'.
2264 * New function `strnlen' is like `strlen' but searches only a given maximum
2265 number of characters for the null terminator. `stpncpy', `strndup' and
2266 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2269 * New function `statfs' in header <sys/statfs.h>.
2271 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2272 provide convenient functions for operating on blocks of null-terminated
2275 * A new suite of functions in <utmp.h> handle all the details of reading
2276 and writing the utmp file.
2278 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2281 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2282 completely POSIX compliant and also implemented the extended functionality
2283 to handle alternate digit representation and alternate era date formats.
2285 * Ulrich Drepper provided an implementation of the `strptime' function
2286 defined in XPG4.2 which transforms a string into a `struct tm' value.
2288 * Paul Eggert provided the tzselect shell script as part of the timezone
2289 code. The shell script makes it easy to select the correct timezone
2292 * The implementation of the malloc family of functions is completely replaced
2293 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2294 The implementation uses the mmap function (if available) and it is
2295 optimized for the use in multi threaded programs.
2297 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2298 functions. This new functionality is usable by specifying a special
2299 salt string and it is compatible with implementation on *BSD systems.
2301 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2302 `getsubopt' to handle second level command line options, `bsd_signal'
2303 to access BSD style `signal' functionality, the obsolete `regexp' style
2306 * the `lchown' function is available on system which support this
2309 * The implementation of the shadow password handling function was contributed
2312 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2314 * POSIX.1g support was added. The <sys/select.h> header is available,
2315 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2316 implementation of `getaddrinfo'.
2320 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2322 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2323 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2325 * The new function `daemon' from 4.4 BSD is useful for server programs that
2326 want to put themselves in the background.
2328 * Joel Sherrill has contributed support for several standalone boards that
2329 run without an operating system.
2331 * `printf', `scanf' and friends now accept a `q' type modifier for long
2332 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2334 * All of the code taken from BSD (notably most of the math and networking
2335 routines) has been updated from the BSD 4.4-Lite release.
2337 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2339 * The new functions `getdomainname' and `setdomainname' fetch or change the
2340 YP/NIS domain name. These are system calls which exist on systems which
2343 * The time zone data files have been updated for the latest international
2346 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2347 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2351 * The C library now includes support for Sun RPC, from Sun's free
2352 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2353 are included. (There is still no support for YP.)
2355 * Tom Quinn has contributed a port of the C library to SGI machines running
2356 Irix 4 (mips-sgi-irix4).
2358 * The new `lockf' function is a simplified interface to the locking
2359 facilities of `fcntl', included for compatibility.
2361 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2363 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2365 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2368 * The error message printed by `assert' for a failed assertion now includes
2369 the name of the program (if using GNU ld) and the name of the calling
2370 function (with versions of GCC that support this).
2372 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2374 * The library now includes the <sys/mman.h> header file and memory
2375 management functions `mmap', `munmap', `mprotect', `msync', and
2376 `madvise', on systems that support those facilities.
2378 * The interface for `mcheck' has changed slightly: the function called to
2379 abort the program when an allocation inconsistency is detected now takes
2380 an argument that indicates the type of failure. The new function
2381 `mprobe' lets you request a consistency check for a particular block at
2382 any time (checks are normally done only when you call `free' or `realloc'
2385 * It is now possible to easily cross-compile the C library, building on one
2386 system a library to run on another machine and/or operating system. All
2387 you need to do is set the variable `HOST_CC' in `configparms' to the
2388 native compiler for programs to run on the machine you are building on (a
2389 few generator programs are used on Unix systems); set `CC' to the
2392 * The new function `fexecve' (only implemented on the GNU system) executes
2393 a program file given a file descriptor already open on the file.
2397 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2398 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2400 * You can set the variable `libprefix' in `configparms' to specify a prefix
2401 to be prepended to installed library files; this makes it easy to install
2402 the GNU C library to be linked as `-lgnuc' or whatever.
2404 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2405 copies a limited number of characters from a string, and returns the
2406 address of the last character written.
2408 * You no longer need to check for whether the installed `stddef.h' is
2409 compatible with the GNU C library. configure now checks for you.
2411 * You can now define a per-stream `fileno' function to convert the
2412 stream's cookie into an integral file descriptor.
2414 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2415 allocates zero bytes of storage, and returns a unique pointer which
2416 you can pass to `realloc' or `free'. The behavior is undefined if
2417 you dereference this pointer.
2419 * The C library now runs on Sony NEWS m68k machines running either
2420 NewsOS 3 or NewsOS 4.
2422 * The new `syscall' function is a system-dependent primitive function
2423 for invoking system calls. It has the canonical behavior on Unix
2424 systems, including unreliable return values for some calls (such as
2425 `pipe', `fork' and `getppid').
2427 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2428 to `EAGAIN', which is the preferred name. On systems whose kernels
2429 use two distinct codes, the C library now translates EWOULDBLOCK to
2430 EAGAIN in every system call function.
2434 * The GNU C Library Reference Manual is now distributed with the library.
2435 `make dvi' will produce a DVI file of the printed manual.
2436 `make info' will produce Info files that you can read on line using C-h i
2437 in Emacs or the `info' program.
2438 Please send comments on the manual to bug-glibc-manual@gnu.org.
2440 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2442 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2444 * Jason Merrill has contributed a port to the Sequent Symmetry running
2445 Dynix version 3 (i386-sequent-dynix).
2447 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2448 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2450 * New function `memory_warnings' lets you arrange to get warnings when
2451 malloc is running out of memory to allocate, like Emacs gives you.
2453 * The C library now contains the relocating allocator used in Emacs 19 for
2454 its editing buffers. This allocator (ralloc) minimizes allocation
2455 overhead and fragmentation by moving allocated regions around whenever it
2456 needs to. You always refer to a ralloc'd region with a "handle" (a
2457 pointer to a pointer--an object of type `void **').
2459 * There is a new `printf' format: `%m' gives you the string corresponding
2460 to the error code in `errno'.
2462 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2463 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2464 pass, the `a' modifier says to fill in a `char **' you pass with a
2467 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2468 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2469 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2471 * `mkstemp' is a traditional Unix function to atomically create and open a
2472 uniquely-named temporary file.
2476 * The standard location for the file that says what the local timezone is
2477 has changed again. It is now `/usr/local/etc/localtime' (or more
2478 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2480 * The distribution no longer contains any files with names longer than 14
2483 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2484 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2486 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2490 * The configuration process has changed quite a bit. The `configure'
2491 script is now used just like the configuration scripts for other GNU
2492 packages. The `sysdeps' directory hierarchy is much rearranged.
2493 The file `INSTALL' explains the new scheme in detail.
2495 * The header files no longer need to be processed into ANSI C and
2496 traditional C versions. There is just one set of files to install, and
2497 it will work with ANSI or old C compilers (including `gcc -traditional').
2499 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2500 MIPS DECStation running Ultrix 4.
2502 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2503 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2504 made itself into a shared library.
2506 * Yet further improved support for the i386, running 4.3 BSD-like systems
2507 (such as Mach 3 with the Unix single-server), or System V.
2509 * New function `strncasecmp' to do case-insensitive string comparison
2510 with limited length.
2512 * New function `strsep' is a reentrant alternative to `strtok'.
2514 * New functions `scandir' and `alphasort' for searching directories.
2516 * New function `setenv' is a better interface to `putenv'.
2518 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2519 function for traversing a directory tree.
2521 * The GNU obstack package is now also part of the C library.
2522 The new function `open_obstack_stream' creates a stdio stream that
2523 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2524 formatted output directly to an obstack.
2526 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2527 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2529 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2531 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2532 things to your strings.
2534 * There are some new test programs: test-fseek, testmb, and testrand.
2536 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2537 These ports are not finished, but are a good starting place for really
2538 supporting those systems.
2540 * `/etc/localtime' is now the standard location for the file that says what
2541 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2542 This follows the general principle that `/etc' is the place for all local
2543 configuration files.
2545 * The C library header files now use `extern "C"' when used by the C++
2546 compiler, so the C library should now work with C++ code.
2548 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2549 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2552 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2553 function which uses the `merge sort' algorithm, and is said to be
2554 significantly faster than the old GNU `qsort' function. Merge sort is
2555 now the standard `qsort' function. The new algorithm can require a lot
2556 of temporary storage; so, the old sorting function is called when the
2557 required storage is not available.
2559 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2560 provides the Unix `crypt' function, plus some other entry points.
2562 * The code and header files taken from 4.4 BSD have been updated with the
2563 latest files released from Berkeley.
2565 ----------------------------------------------------------------------
2566 Copyright information:
2568 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2570 Permission is granted to anyone to make or distribute verbatim copies
2571 of this document as received, in any medium, provided that the
2572 copyright notice and this permission notice are preserved,
2573 thus giving the recipient permission to redistribute in turn.
2575 Permission is granted to distribute modified versions
2576 of this document, or of portions of it,
2577 under the above conditions, provided also that they
2578 carry prominent notices stating who last changed them.
2581 version-control: never
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