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, 18665, 18694, 18928, 19018, 19682.
15 * A stack-based buffer overflow was found in libresolv when invoked from
16 libnss_dns, allowing specially crafted DNS responses to seize control
17 of execution flow in the DNS client. The buffer overflow occurs in
18 the functions send_dg (send datagram) and send_vc (send TCP) for the
19 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
20 family. The use of AF_UNSPEC triggers the low-level resolver code to
21 send out two parallel queries for A and AAAA. A mismanagement of the
22 buffers used for those queries could result in the response of a query
23 writing beyond the alloca allocated buffer created by
24 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
25 the overflow. Thanks to the Google Security Team and Red Hat for
26 reporting the security impact of this issue, and Robert Holiday of
27 Ciena for reporting the related bug 18665. (CVE-2015-7547)
29 * The LD_POINTER_GUARD environment variable can no longer be used to
30 disable the pointer guard feature. It is always enabled.
32 * CVE-2015-1472 Under certain conditions wscanf can allocate too little
33 memory for the to-be-scanned arguments and overflow the allocated
34 buffer. The implementation now correctly computes the required buffer
35 size when using malloc.
37 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
38 under certain input conditions resulting in the execution of a shell for
39 command substitution when the applicaiton did not request it. The
40 implementation now checks WRDE_NOCMD immediately before executing the
41 shell and returns the error WRDE_CMDSUB as expected.
43 * CVE-2012-3406 printf-style functions could run into a stack overflow when
44 processing format strings with a large number of format specifiers.
46 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
47 infinite loopif the DNS response contained a PTR record of an unexpected
50 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 release.
51 It has been fixed to match 2.19 and older, but binaries built against 2.20
52 might need to be recompiled. See BZ#18694.
56 * The following bugs are resolved with this release:
58 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
59 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
60 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
61 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
62 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
63 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
64 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
65 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
66 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
67 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
68 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
69 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
70 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
71 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
72 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
74 * Reverted change of ABI data structures for s390 and s390x:
75 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
76 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
77 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
78 are preserved pointing straight to the same implementation as the old ones.
79 Given that, new callers will simply provide a too-big buffer to these
80 functions. Any applications/libraries out there that embed jmp_buf or
81 ucontext_t in an ABI-relevant data structure that have already been rebuilt
82 against 2.19 headers will have to rebuilt again. This is necessary in any
83 case to revert the breakage in their ABI caused by the glibc change.
85 * Support for file description locks is added to systems running the
86 Linux kernel. The standard file locking interfaces are extended to
87 operate on file descriptions, not file descriptors, via the use of
88 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
89 are associated with an open file instead of a process.
91 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
93 * The minimum Linux kernel version that this version of the GNU C Library
94 can be used with is 2.6.32.
96 * Running the testsuite no longer terminates as soon as a test fails.
97 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
98 with PASS or FAIL lines for individual tests. A summary of the results is
99 printed, including a list of failing lists, and "make check" exits with
100 error status if there were any unexpected failures. "make check
101 stop-on-test-failure=y" may be used to keep the old behavior.
103 * The am33 port, which had not worked for several years, has been removed
106 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
107 supported; they now act the same as _DEFAULT_SOURCE (but generate a
108 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
109 conflicted with POSIX (support for which was removed in 2.19), the
110 interfaces those macros enabled remain available when compiling with
111 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
114 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
116 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
117 This may improve lock scaling of existing programs on TX capable systems.
118 The lock elision code is only built with --enable-lock-elision=yes and
119 then requires a GCC version supporting the TX builtins. With lock elision
120 default mutexes are elided via __builtin_tbegin, if the cpu supports
121 transactions. By default lock elision is not enabled and the elision code
124 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
125 copy the path argument. This allowed programs to cause posix_spawn to
126 deference a dangling pointer, or use an unexpected pathname argument if
127 the string was modified after the posix_spawn_file_actions_addopen
130 * All supported architectures now use the main glibc sysdeps directory
131 instead of some being in a separate "ports" directory (which was
132 distributed separately before glibc 2.17).
134 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
135 On configurations that support it (all Linux configurations), it's now
136 used regardless of the --enable-add-ons switch to configure. It is no
137 longer possible to build such configurations without pthreads support.
139 * Locale names, including those obtained from environment variables (LANG
140 and the LC_* variables), are more tightly checked for proper syntax.
141 setlocale will now fail (with EINVAL) for locale names that are overly
142 long, contain slashes without starting with a slash, or contain ".." path
143 components. (CVE-2014-0475) Previously, some valid locale names were
144 silently replaced with the "C" locale when running in AT_SECURE mode
145 (e.g., in a SUID program). This is no longer necessary because of the
148 * On x86-64, the dynamic linker's lazy-binding support is now compatible
149 with application code using Intel MPX instructions. (With all previous
150 versions, the MPX register state could be clobbered when making calls
151 into or out of a shared library.) Note that while the new dynamic
152 linker is compatible with all known x86 hardware whether or not it
153 supports Intel MPX, some x86 instruction-set emulators might fail to
154 handle the new instruction encodings. This is known to affect Valgrind
155 versions up through 3.9 (but will be fixed in the forthcoming 3.10
156 release), and might affect other tools that do instruction emulation.
158 * Support for loadable gconv transliteration modules has been removed.
159 The support for transliteration modules has been non-functional for
160 over a decade, and the removal is prompted by security defects. The
161 normal gconv conversion modules are still supported. Transliteration
162 with //TRANSLIT is still possible, and the //IGNORE specifier
163 continues to be supported. (CVE-2014-5119)
165 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
166 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
167 resulting a denial-of-service security vulnerability in applications which
168 use functions related to iconv. (CVE-2014-6040)
172 * The following bugs are resolved with this release:
174 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
175 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
176 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
177 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
178 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
179 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
180 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
181 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
182 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
183 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
184 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
185 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
186 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
187 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
188 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
189 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
190 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
191 16431, 16453, 16474, 16506, 16510, 16529
193 * Slovenian translations for glibc messages have been contributed by the
194 Translation Project's Slovenian team of translators.
196 * The public headers no longer use __unused nor __block. This change is to
197 support compiling programs that are derived from BSD sources and use
198 __unused internally, and to support compiling with Clang's -fblock
199 extension which uses __block.
201 * CVE-2012-4412 The strcoll implementation caches indices and rules for
202 large collation sequences to optimize multiple passes. This cache
203 computation may overflow for large collation sequences and may cause a
204 stack or buffer overflow. This is now fixed to use a slower algorithm
205 which does not use a cache if there is an integer overflow.
207 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
208 rules for large collation sequences to optimize multiple passes and falls
209 back to alloca if malloc fails, resulting in a possible stack overflow.
210 The implementation now falls back to an uncached collation sequence lookup
213 * CVE-2013-4788 The pointer guard used for pointer mangling was not
214 initialized for static applications resulting in the security feature
215 being disabled. The pointer guard is now correctly initialized to a
216 random value for static applications. Existing static applications need
217 to be recompiled to take advantage of the fix (bug 15754).
219 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
220 to the d_name member of struct dirent, or omit the terminating NUL
221 character. (Bugzilla #14699).
223 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
224 aligned_alloc functions could allocate too few bytes or corrupt the
225 heap when passed very large allocation size values (Bugzilla #15855,
228 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
229 for AF_INET6 has been fixed (Bugzilla #16072).
231 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
232 pap_CW, quz_PE, the_NP.
234 * Substantially revised locales: gd_GB, ht_HT
236 * The LC_ADDRESS field was updated to support country_car for almost all
239 * ISO 1427 definitions were updated.
241 * ISO 3166 definitions were updated.
243 * The localedef utility now supports --big-endian and --little-endian
244 command-line options to generate locales for a different system from that
245 for which the C library was built.
247 * Binary locale files now only depend on the endianness of the system for
248 which they are generated and not on other properties of that system. As a
249 consequence, binary files generated with new localedef may be incompatible
250 with old versions of the GNU C Library, and binary files generated with
251 old localedef may be incompatible with this version of the GNU C Library,
252 in the following circumstances:
254 + Locale files may be incompatible on m68k systems.
256 + Locale archive files (but not separate files for individual locales) may
257 be incompatible on systems where plain "char" is signed.
259 * The configure option --disable-versioning has been removed. Builds with
260 --disable-versioning had not worked for several years.
262 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
263 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
265 * SystemTap probes for malloc have been introduced.
267 * SystemTap probes for slow multiple precision fallback paths of
268 transcendental functions have been introduced.
270 * Support for powerpc64le has been added.
272 * The soft-float powerpc port now supports e500 processors.
274 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
276 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
277 set of header declarations that are enabled by default, even when other
278 feature test macros or compiler options such as -std=c99 would otherwise
279 disable some of those declarations.
281 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
282 conflict with POSIX. The libbsd-compat library (which was a dummy library
283 that did nothing) has also been removed.
285 * Preliminary documentation about Multi-Thread, Async-Signal and
286 Async-Cancel Safety has been added.
288 * Change of ABI data structures for s390 and s390x:
289 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
290 allow for future hardware extensions. All library functions that accept or
291 return these structures were versioned in order to provide backwards
292 compatibility with existing code. However, not all cases can be handled
293 with interface versioning. If an application embeds either structure into
294 another structure and that structure is passed to another compilation unit
295 which expects the newer larger-sized object then any access to the new
296 fields will result in undefined behaviour. Similarly any access to fields
297 that were moved by the enlarging of the structures will cause undefined
298 behaviour. To fix the undefined behaviour all objects that are part of the
299 final in-memory image must agree on the size of structures, and this may
300 require recompilation.
304 * The following bugs are resolved with this release:
306 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
307 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
308 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
309 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
310 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
311 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
312 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
313 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
314 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
315 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
316 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
317 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
318 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
321 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
322 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
323 Distributions can re-enable building and using pt_chown via the new configure
324 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
325 considerable security risks and should only be used if the distribution
326 understands and accepts the risks.
328 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
331 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
332 fixed (Bugzilla #15330).
334 * Add support for calling C++11 thread_local object destructors on thread
335 and program exit. This needs compiler support for offloading C++11
336 destructor calls to glibc.
338 * Improved worst case performance of libm functions with double inputs and
341 * Support for priority inherited mutexes in pthread condition variables on
342 non-x86 architectures.
344 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
346 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
348 * Optimized string functions for ARM. Implemented by Will Newton and
351 * Optimized libm functions for SPARC. Implemented by David S. Miller.
353 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
356 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
357 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
359 * Added a benchmark framework to track performance of functions in glibc.
361 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
362 It is based on draft TS 18661 and currently enabled as a GNU extension.
364 * On Linux, the clock function now uses the clock_gettime system call
365 for improved precision, rather than old times system call.
367 * Added support for version-3 tz format files. This is needed when using
368 the tz database release 2013e or later, and affects a few unusual cases --
369 currently only TZ='America/Godthab' for time stamps after 2037.
371 * Added new API functions pthread_getattr_default_np and
372 pthread_setattr_default_np to get and set the default pthread
373 attributes of a process.
375 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
376 This may improve lock scaling of existing programs on TSX capable systems.
377 When the --enable-lock-elision=yes parameter is specified at configure
378 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
381 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
382 availability). Implemented by Ryan S. Arnold.
384 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
388 * The following bugs are resolved with this release:
390 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
391 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
392 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
393 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
394 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
395 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
396 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
397 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
398 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
399 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
400 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
401 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
402 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
403 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
404 14879, 14889, 14893, 14898, 14914.
406 * Optimization of memcpy for MIPS.
408 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
409 EMFILE has been fixed (Bugzilla #14889).
411 * The add-on ports collection is now distributed in the "ports" subdirectory
412 of the main GNU C Library distribution, rather than separately.
414 * Port to ARM AArch64 contributed by Linaro.
416 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
417 Optimized versions of memcpy, memset, and memcmp added for System z10 and
419 Implemented by Andreas Krebbel.
421 * The new function secure_getenv allows secure access to the environment,
422 returning NULL if running in a SUID/SGID process. This function replaces
423 the internal function __secure_getenv.
425 * SystemTap static probes have been added into the dynamic linker.
426 Implemented by Gary Benson.
428 * Optimizations of string functions strstr, strcasestr and memmem.
429 Implemented by Maxim Kuvyrkov.
431 * The minimum Linux kernel version that this version of the GNU C Library
432 can be used with is 2.6.16.
434 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
435 powerpc POWER7. Implemented by Will Schmidt.
437 * New configure option --disable-nscd builds the C library such that it
438 never attempts to contact the Name Service Caching Daemon (nscd).
439 New configure option --disable-build-nscd avoids building nscd itself;
440 this is the default if --disable-nscd is used.
442 * Improved support for cross-compilation, including cross-testing and
443 bootstrap builds without a previously built glibc.
445 * Several testsuite tests are now able to test multiple IFUNC variants of an
446 interface, rather than just testing the one that would be chooen by
449 * New configure options --with-bugurl and --with-pkgversion, for
450 distributors to use to embed their bug-reporting and package version
451 information in --help and --version output.
453 * The ttyname and ttyname_r functions on Linux now fall back to searching for
454 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
455 allows creation of chroots without the procfs mounted on /proc.
457 * The `crypt' function now fails if passed salt bytes that violate the
458 specification for those values. On Linux, the `crypt' function will
459 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
460 enabled, and fail on encrypted strings using the MD5 or DES algorithm
461 when the mode is enabled.
463 * The `clock_*' suite of functions (declared in <time.h>) is now available
464 directly in the main C library. Previously it was necessary to link with
465 -lrt to use these functions. This change has the effect that a
466 single-threaded program that uses a function such as `clock_gettime' (and
467 is not linked with -lrt) will no longer implicitly load the pthreads
468 library at runtime and so will not suffer the overheads associated with
469 multi-thread support in other code such as the C++ runtime library.
471 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
476 * The following bugs are resolved with this release:
478 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
479 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
480 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
481 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
482 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
483 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
484 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
485 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
486 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
487 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
488 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
489 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
490 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
491 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
492 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
493 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
494 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
495 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
496 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
497 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
498 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
499 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
502 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
503 configuring glibc with:
504 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
505 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
506 Implemented by H.J. Lu.
510 + define static_assert
512 + do not declare gets
514 + declare at_quick_exit and quick_exit also for ISO C11
516 + aligned_alloc. NB: The code is deliberately allows the size parameter
517 to not be a multiple of the alignment. This is a moronic requirement
518 in the standard but it is only a requirement on the caller, not the
523 + uchar.h support added
525 + CMPLX, CMPLXF, CMPLXL added
527 Implemented by Ulrich Drepper.
529 * Support for the IA-64 has been moved to ports.
531 * Remove support for anything but ELF binary format
533 * Checking versions of poll, ppoll added.
534 Implemented by Ulrich Drepper.
536 * More generic and 64-bit performance optimizations to math functions.
537 Implemented by Ulrich Drepper.
539 * New configure option --enable-obsolete-rpc makes the deprecated RPC
540 headers and functions available at compile time as they were before
541 version 2.14. This option will be removed at some time in the future
542 after the TI-RPC library becomes fully sufficient for the needs of
543 existing applications.
545 * Compatibility code for Linux kernel versions before 2.4 has been removed.
546 Note that glibc is not expected to work with any Linux kernel version
549 * New header <sys/auxv.h> and function getauxval allowing easy access to
550 the AT_* key-value pairs passed from the Linux kernel. The header also
551 defines the HWCAP_* bits associated with the AT_HWCAP key.
553 * New locales: mag_IN
555 * New configure option --enable-systemtap builds SystemTap static probes
556 into libc for setjmp and longjmp and into libpthread for various operations.
557 So far the setjmp/longjmp probes and some of the libpthread probes are
558 provided only for i*86 and x86_64.
559 Implemented by Roland McGrath and Rayson Ho.
561 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
563 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
566 * More optimized functions for SPARC. Implemented by David S. Miller.
568 * Improved support for cross-compilation, especially bootstrap builds
569 without a previously built glibc.
571 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
572 Chris Metcalf from Tilera.
574 * Support for the old ARM ABI has been removed from ports. Only the EABI is
575 now supported for ARM processors.
577 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
578 as the name of the dynamic linker, to distinguish it from the
579 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
581 * Support for CRIS has been removed from ports.
583 * A new class of installed header has been documented for low-level
584 platform-specific functionality. PowerPC added the first instance with a
585 function to provide time base register access. Contributed by Tulio
586 Magno Quites Machado Filho.
588 * ix86 configurations now install header files that are consistent with
589 what x86-64 configurations install. These same header files can be used
590 for -m32, -m64, or -mx32 builds.
591 Contributed by H.J. Lu.
593 * Math library bug fixes. A thorough audit of all open math library bugs was
594 conducted by Joseph Myers. Significant progress was made on many math
595 library bugs resulting in more accurate exceptions and function results.
596 Many thanks to all those that contributed including Andreas Jaeger for his
597 patch review and work on the x87 trigonometric instruction issues.
599 * Timezone data is no longer installed. Timezone-related binaries and scripts
600 will continue to be installed. Users should obtain their timezone data from
601 their distribution provider or from the tzdata package at
602 <ftp://munnari.oz.au/pub/>.
606 * The following bugs are resolved with this release:
608 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
609 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
610 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
611 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
612 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
613 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
614 13484, 13506, 13515, 13523, 13524, 13538, 13540
616 * New program pldd to list loaded object of a process
617 Implemented by Ulrich Drepper.
619 * Add nss_db support back to glibc. No more dependency on Berkeley db
620 and support for initgroups lookups.
621 Implemented by Ulrich Drepper.
623 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
624 Contributed by HJ Lu.
626 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
627 Contributed by HJ Lu.
629 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
630 on x86-32 and x86-64.
631 Contributed by Liubov Dmitrieva.
633 * Optimized strchr and strrchr for SSE on x86-32.
634 Contributed by Liubov Dmitrieva.
636 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
637 for x86-64 and x86-32.
638 Contributed by Liubov Dmitrieva.
640 * New interfaces: scandirat, scandirat64
641 Implemented by Ulrich Drepper.
643 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
644 Implemented by Ulrich Drepper.
646 * nscd now also caches the netgroup database.
647 Implemented by Ulrich Drepper.
649 * Integrate libm with gcc's -ffinite-math-only option.
650 Implemented by Ulrich Drepper.
652 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
653 to math functions. Implemented by Ulrich Drepper.
655 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
656 Implemented by Ulrich Drepper.
658 * New Linux interfaces: process_vm_readv, process_vm_writev
660 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
661 Implemented by Ulrich Drepper.
663 * Optimized nearbyint and strcasecmp for PPC.
664 Implemented by Adhemerval Zanella.
666 * New locales: bho_IN, unm_US, es_CU, ta_LK
670 * The following bugs are resolved with this release:
672 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
673 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
674 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
675 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
676 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
677 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
678 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
679 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
680 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
681 12795, 12811, 12813, 12814, 12841
683 * The RPC implementation in libc is obsoleted. Old programs keep working
684 but new programs cannot be linked with the routines in libc anymore.
685 Programs in need of RPC functionality must be linked against TI-RPC.
686 The TI-RPC implementation is IPv6 enabled and there are other benefits.
688 Visible changes of this change include (obviously) the inability to link
689 programs using RPC functions without referencing the TI-RPC library and the
690 removal of the RPC headers from the glibc headers.
691 Implemented by Ulrich Drepper.
693 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
694 syncfs, setns, sendmmsg
696 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
697 yue_HK, lij_IT, mhr_RU
699 * New encodings: CP770, CP771, CP772, CP773, CP774
701 * New program sotruss to trace calls through PLTs
702 Implemented by Ulrich Drepper.
704 * The malloc hook implementation is marked deprecated and will be removed
705 from the default implementation in the next version. The design never
706 worked ever since the introduction of threads. Even programs which do
707 not create threads themselves can use multiple threads created internally.
711 * The following bugs are resolved with this release:
713 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
714 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
715 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
716 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
719 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
721 * POWER7 optimizations: memset, memcmp, strncmp
723 * New optimized string functions for x86-64: strnlen (SSE2),
724 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
725 Implemented by Ulrich Drepper.
729 * The following bugs are resolved with this release:
731 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
732 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
733 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
734 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
735 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
736 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
737 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
738 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
740 * New interfaces: pthread_getname_np, pthread_setname_np
742 * New Linux interface: recvmmsg
744 * STT_GNU_IFUNC implemented for Sparc by David Miller.
746 * The dynamic linker now recognizes supported ABI versions from the
747 EI_ABIVERSION field in the ELF header.
748 Implemented by Ulrich Drepper.
750 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
751 will not be used to fill in password fields in the passwd.byname replies.
752 Instead it is used to synthesize the shadow.byname table, should it be
753 missing. This is a useful mode in some installations involving Solaris.
754 Implemented by Ulrich Drepper.
756 * New locales: kok_IN, sq_MK, cv_RU
760 * The following bugs are resolved with this release:
762 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
763 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
764 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
765 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
766 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
767 10789, 10817, 10823, 10840, 10847
769 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
771 Implemented by Ulrich Drepper.
773 * Checking version of longjmp added that fails if an uninitialized stack
774 frame would be created. Implemented by Ulrich Drepper.
776 * STT_GNU_IFUNC is now supported in static executables.
777 Implemented by H.J. Lu.
779 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
781 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
782 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
783 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
784 Contributed by H.J. Lu.
786 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
787 Implemented by Ulrich Drepper.
789 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
791 Contributed by H.J. Lu.
793 * Support for fma instruction in AVX on x86-64.
794 Implemented by H.J. Lu and Ulrich Drepper.
796 * AVX support in x86-64 auditing support in ld.so.
797 Implemented by H.J. Lu.
799 * STB_GNU_UNIQUE support added.
800 Implemented by Ulrich Drepper.
802 * Implement second fallback mode for optimized DNS lookup for even more
803 broken environments. If two requests from the same port are not
804 handled correctly close the socket and open a new one before sending
805 the second request. The 'single-request-reopen' option in /etc/resolv.conf
806 can be used to select this mode right away, instead of rediscovering the
807 necessity is every process again.
808 Implemented by Ulrich Drepper.
810 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
811 Implemented by Adam Tkac.
813 * Optimized iconv conversions for S390x.
814 Implemented by Andreas Krebbel.
816 * Using condvars with PI mutexes is now more efficient due to kernel
817 support for requeueing to PI futexes. NPTL support added for x86-64.
818 Implemented by Ulrich Drepper.
820 * New locales: ps_AF, my_MM
824 * The following bugs are resolved with this release:
826 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
827 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
828 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
829 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
830 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
832 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
833 Implemented by Ulrich Drepper.
835 * New Linux interfaces: accept4, fallocate, fallocate64.
836 Implemented by Ulrich Drepper.
838 * Correct declarations of string function when used in C++ code. This
839 could lead to compile errors for invalid C++ code.
841 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
844 * New POSIX 2008 interface: psiginfo
845 Implemented by Ulrich Drepper.
847 * New ISO C++1x interfaces: quick_exit, at_quick_exit
848 Implemented by Ulrich Drepper.
850 * Support for selecting between multiple function definitions at runtime
851 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
853 * The libcrypt library can now use the hash function implementations in
854 NSS. Implemented by Ulrich Drepper.
856 * The malloc implementation can be compiled to be less memory efficient
857 but higher performing in multi-threaded programs.
858 Implemented by Ulrich Drepper.
860 * New locales: nan_TW@latin, ks_IN
862 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
863 Implemented by Ulrich Drepper.
865 * Extended printf hook support. It is possible to use user-defined types
866 and extend existing format specifiers.
867 Implemented by Ulrich Drepper.
869 * Handling for group shadow files has been added.
870 Implemented by Ulrich Drepper.
872 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
873 servers (the case, e.g., for some people using the built-in DNS
874 server in ADSL modems/routers). There is a once-per-process timeout
875 in case of a broken server. To avoid it, users can run nscd or put
876 'options single-request' in /etc/resolv.conf.
877 Implemented by Ulrich Drepper.
881 * The following bugs are resolved with this release:
883 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
884 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
885 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
886 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
887 6968, 6974, 6980, 6995, 7008, 7009, 7029
889 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
890 up at the same time. Implemented by Ulrich Drepper.
892 * TLS descriptors for LD and GD on x86 and x86-64.
893 Implemented by Alexandre Oliva.
895 * getaddrinfo now handles DCCP and UDPlite.
896 Implemented by Ulrich Drepper.
898 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
899 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
900 Implemented by Ulrich Drepper.
902 * New implementation of memmem, strstr, and strcasestr which is O(n).
903 Implemented by Eric Blake.
905 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
907 * Implement "e" option for popen to open file descriptor with the
908 close-on-exec flag set. Implemented by Ulrich Drepper.
910 * Implement "b" mode for fmemopen. In this mode writes writes don't
911 implicitly add a NUL byte and seeks from the end of the buffer really
912 use the buffer end, not the string length as the basis.
913 Implemented by Ulrich Drepper.
915 * Many functions, exported and internal, now atomically set the close-on-exec
916 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
918 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
920 Implemented by Pravin Satpute.
922 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
926 * The following bugs are resolved with this release:
928 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
929 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
930 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
931 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
932 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
933 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
934 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
936 * New locales: bo_CN, bo_IN, shs_CA.
938 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
940 * Sorting rules for some Indian languages (Devanagari and Gujarati).
941 Implemented by Pravin Satpute.
943 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
945 * nscd caches now all timeouts for DNS entries
946 Implemented by Ulrich Drepper.
948 * nscd is more efficient and wakes up less often.
949 Implemented by Ulrich Drepper.
951 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
952 vdprintf, and obstack_vprintf.
953 Implemented by Jakub Jelinek.
955 * Faster memset for x86-64.
956 Implemented by Harsha Jagasia and H.J. Lu.
958 * Faster memcpy on x86.
959 Implemented by Ulrich Drepper.
961 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
962 Implemented by Ulrich Drepper.
964 * Faster sqrt and sqrtf implemention for some PPC variants.
965 Implemented by Steven Munroe.
969 * The following bugs are resolved with this release:
971 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
972 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
973 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
974 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
975 5071, 5103, 5104, 5112, 5113, 5184, 5186
977 * More checking functions: fread, fread_unlocked, open*, mq_open.
978 Implemented by Jakub Jelinek and Ulrich Drepper.
980 * Extend fortification to C++. Implemented by Jakub Jelinek.
982 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
983 by not recognizing 'a' as a modifier when those specs are requested.
984 Implemented by Jakub Jelinek.
986 * PPC optimizations to math and string functions.
987 Implemented by Steven Munroe.
989 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
990 options to be passed. Implemented by Ulrich Drepper.
992 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
994 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
995 Implemented by Ulrich Drepper.
997 * Handle private futexes in the NPTL implementation.
998 Implemented by Jakub Jelinek and Ulrich Drepper.
1000 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
1001 Implemented by Roland McGrath and Ulrich Drepper.
1003 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
1005 * SHA-256 and SHA-512 based password encryption.
1006 Implemented by Ulrich Drepper.
1008 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
1009 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
1012 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
1013 Implemented by Ulrich Drepper.
1017 * The following bugs are resolved with this release:
1019 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1020 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1021 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1022 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1023 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1024 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1025 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1028 * New Linux interfaces: epoll_pwait, sched_getcpu.
1030 * New generic interfaces: strerror_l.
1032 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1036 * The following bugs are resolved with this release:
1038 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1039 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1040 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1041 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1042 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1043 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1044 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1045 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1046 3225, 3251, 3252, 3253, 3273
1048 * For Linux, the sorting of addresses returned by getaddrinfo now also
1049 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1050 Implemented by Ulrich Drepper.
1052 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1053 Implemented by Ulrich Drepper.
1055 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1057 * New iconv module for MIK. Contributed by Alexander Shopov.
1059 * For sites with broken group and/or passwd database, the auto-propagate
1060 option of nscd can prevent creating ID lookup entries from the results
1061 of a name lookup and vice versa. This usually is no problem but some
1062 site might have problems with the default behavior.
1063 Implemented by Ulrich Drepper.
1065 * Iterating over entire database in NIS can be slow. With the
1066 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1067 to trade time for memory. The entire database will be read at once.
1068 Implemented by Ulrich Drepper.
1070 * The interfaces introduced in RFC 3542 have been implemented by
1073 * Support for the new ELF hash table format was added by Ulrich Drepper.
1075 * Support for priority inheritance mutexes added by Jakub Jelinek and
1078 * Support for priority protected mutexes added by Jakub Jelinek.
1080 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1081 or_IN, csb_PL, fy_NL, sr_ME.
1085 * More overflow detection functions.
1087 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1088 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1090 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1091 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1092 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1093 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1094 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1095 by Masahide Washizawa.
1097 * It is now possible to install audit libraries for the dynamic linker using
1098 LD_AUDIT. Implemented by Ulrich Drepper.
1100 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1101 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1102 For a libc and libpthread that works well on Linux 2.4 kernels, we
1103 recommend using the stable 2.3 branch.
1105 * The new function open_wmemstream acts like open_memstream,
1106 but uses a wchar_t wide character buffer.
1108 * The new function ppoll is an improved version of poll, similar to pselect.
1110 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1111 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1112 renameat, unlinkat, linkat, symlinkat, readlinkat.
1114 * New Linux kernel system calls: unshare,
1115 inotify_init, inotify_add_watch, inotify_rm_watch.
1117 * The euidaccess function is now also known by the alias eaccess,
1118 for compatibility with some other systems.
1120 * Timezone data updated to 2006b version.
1124 * The following bugs are resolved with this release:
1126 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1127 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1128 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1129 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1130 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1131 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1133 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1135 * As of this release, GCC 4 can be used to compile the C Library.
1137 * Timezone data updated to 2005m version.
1141 * The following bugs are resolved with this release:
1143 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1144 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1145 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1146 777, 787, 821, 822, 823, 825
1148 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1152 * Support for RFC 3678. Real implementations exist only for Linux so far.
1153 Implemented by Ulrich Drepper.
1155 * nscd can now cache entries persistently. Expiring entries are reloaded.
1156 For speedups the cache can be shared in memory with client processes.
1157 Implemented by Ulrich Drepper.
1159 * nscd can now perform SELinux checks.
1160 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1162 * getaddrinfo queries are now cached. Canonical name lookup is performed
1164 Implemented by Ulrich Drepper.
1166 * The nothrow function attribute is used when headers are used by gcc when
1167 compiling C code. This can avoid significant amounts of exception
1170 * The malloc functions perform more error checking and are stricter when
1171 it comes to reacting on errors. The default action is to terminate
1172 the process after showing an error message. Implemented by Ulrich Drepper.
1174 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1175 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1177 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1178 namespaces using the new function dlmopen(). This feature is of course,
1179 like most other dynamic loading functionality, not available in statically
1180 linked applications. Implemented by Ulrich Drepper.
1182 * Low-overhead boundary checking variants of string and some stdio functions
1183 were added. These are to be used in conjunction with a gcc patch by
1184 Jakub Jelinek which adds calls to these functions if possible.
1185 Implemented by Jakub Jelinek and Ulrich Drepper.
1187 * Old code for several operating systems and machine architectures that
1188 have not been in working condition in a long time have been removed from
1189 the main source tree maintained by the GNU C Library's maintainers.
1190 These files are now reside in the separate `ports' source module
1191 that is usable as an add-on when building the library.
1195 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1196 interrogate the dynamic linker, compatible with the Solaris interface.
1198 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1199 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1201 * getifaddrs now uses the netlink interface on Linux to get its information.
1202 Implemented by Thorsten Kukuk.
1204 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1205 Implemented by Ulrich Drepper.
1207 * support for non-executable stacks on x86 has been added. Changes mostly
1210 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1213 * getaddrinfo now performs destination address selection according to
1218 * Thread-safe interfaces for many functions that access locale data
1219 were added in version 2.3, but these features were omitted from NEWS.
1220 Many functions have variants with an `_l' suffix that take a `locale_t'
1221 object as a parameter rather than consulting the current locale.
1222 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1223 create and maintain `locale_t' objects. Additionally, the new function
1224 `uselocale' sets "the current locale" (as used by functions not so
1225 parameterized) set for an individual thread. These features were added
1226 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1228 * The functions getresuid, getresgid, setresuid, and setresgid, which
1229 have long been available on Linux, are now declared in <unistd.h>
1230 and are now also available on the Hurd.
1232 * ELF thread-local storage support (TLS) now works on x86-64.
1234 * The new dynamic string token $LIB is expanded in shared library names.
1235 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1237 * Aldy Hernandez contributed complete software floating point support for
1238 PowerPC machines with no FPU.
1240 * fexecve is implemented on Linux.
1242 * The `btowc' function should work at least twice as fast due to
1243 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1245 * With approriate thread add-ons cancelable functions are now implemented
1246 in libc.so as well. No need to call the function in libpthread. This
1247 change allowed to finally disable the incorrect and expensive handling
1248 of weak definition in ld.so.
1250 * Yet more PLT entries in libc.so have been removed. We finally arrived
1251 at the bare minimum. Startup times improved appropriately.
1253 * Support for the new Linux/x86 system call interface was added. The
1254 AT_SYSINFO auxiliary vector entry is recognized and handled.
1258 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1261 * iconv (the program and the interface) now accepts empty names (excluding
1262 options like //TRANSLIT) to mean "use charset of current locale".
1264 * localedef can now transliterate characters in strings which are not in
1265 the provided charmap. The information from the input locale is used.
1267 * Prelinking support was added for ELF targets. This requires additional
1268 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1270 * Read-only stdio streams now use mmap to speed up operation by eliminating
1271 copying and buffer underflows. To use add 'm' to the mode string of
1272 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1274 * The malloc functions were completely rewritten by Wolfram Gloger based
1275 on Doug Lea's malloc-2.7.0.c.
1277 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1278 implementation of regex.
1280 * Bruno Haible upgraded the iconv and locale implementation to support
1283 * Contents of the LC_* and LANG environment variables in the CEN style are
1284 not recognized anymore. It never was used. Change by Ulrich Drepper.
1286 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1287 thread-local storage (TLS) ABI on some platforms.
1288 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1290 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1291 EUC-JISX0213, and TSCII.
1293 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1294 BSD-compatible interface for getting all network interface addresses.
1295 Implementation for IPv4 by Roland McGrath.
1297 * Loading of locale data is faster due to the introduction of a locale
1298 archive. Implemented by Roland McGrath and Ulrich Drepper.
1300 * Startup times are significantly reduced by not using exported functions
1301 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1304 * Steven Munroe contributed a port to PowerPC64/Linux.
1308 * The Hurd now uses the GNU libio implementation of stdio rather than the
1309 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1311 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1312 with the same behavior as the Linux system call of the same name.
1316 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1317 128-bit long double format.
1319 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1320 IBM1161, and IBM1162 charsets.
1322 * Andreas Jaeger contributed a port to x86-64/Linux.
1324 * Peter Bruin contributed a port to PowerPC/Hurd.
1326 * libc functions using I/O streams now can handle wide-oriented streams
1329 * optimizations in the dynamic linker. Binaries created by recent binutils
1330 versions start up quicker due to reduced time spent on relocations.
1332 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1336 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1337 asinh, atanh, j0 for the 128-bit long double format.
1339 * Bruno Haible updated all the code handling Unicode in some form to
1340 support Unicode 3.1.
1342 * Speed of regex for single-byte locales is back to previous levels.
1343 Patch by Isamu Hasegawa.
1345 * Alpha, SPARC, and IA-64 now also using floating stacks.
1347 * Startup time of internationalized applications greatly improved through
1348 iconv cache. Use iconvconfig to generate the cache file.
1349 Contributed by Ulrich Drepper.
1351 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1352 severe performance problems. Patch by David Mosberger.
1354 * The Hurd port got a lot more functionality like AIO, various stdio
1355 extensions, etc. Mainly done by Roland McGrath.
1357 * mtrace can now lookup symbols in shared libraries.
1361 * Intel's IA-64 math library is largely integrated. It provides fast and
1362 accurate implementatations for most basic and standard math functions
1363 in float, double, and long double format.
1365 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1366 and asin for the 96-bit long double format and asin, log, tan for the
1367 128-bit long double format.
1369 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1370 The basic double functions exist today. Contributed by Abraham Ziv
1371 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1372 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1374 * An asynchronous name lookup library was added. The interface is designed
1375 after POSIX AIO. The proposal was circulated beforehand to get comments.
1376 No negative ones came in. Implemented by Ulrich Drepper.
1378 * Port to S390/64bit contributed by Martin Schwidefsky
1379 <schwidefsky@de.ibm.com>.
1381 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1382 of functions for Linux/IA-64.
1384 * The RPC code is now thread safe. Threads can now use the same service
1385 of different services at the same time. Patch by Eric Norum
1386 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1388 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1389 family of functions for Linux/S390.
1391 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1392 of functions for Linux/x86.
1394 * Port to Linux/CRIS contributed by Axis Communications.
1398 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1399 we can now check for namespace violations and missing declarations. The
1400 result is that almost all headers are now Unix-compliant (as defined in
1401 the upcoming XPG6). The negative side is that some programs might need
1402 corrections, too, if they depend on the incorrect form of the headers in
1403 previous versions which defined too many symbols and included too many
1406 * regex now handles multibyte character sets correctly.
1407 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1409 * iconv (the program) does now conform to the upcoming XPG6 and handles
1410 charmaps. Instead of the charset names the path of charmaps can be
1411 provided and the conversion happens based on this data.
1412 Contributed by Ulrich Drepper.
1414 * The locale program now provides detailed information about the installed
1419 only lists the names of the supported locales
1423 provides details such as country, language, and codeset name.
1424 Contributed by Ulrich Drepper.
1428 * The gencat program now parses the input file according to the charset
1429 selected by the LC_CTYPE category. This is important for stateful
1430 character sets. To make generating catalogs easier there is a way
1431 to overwrite the charset selected by the locale: before the first
1432 message or $ quote line the catalog can contain a line like
1434 $ codeset=ISO-8859-2
1436 to select the charset (ISO-8859-2 in this case).
1438 Implemented by Shinya Hanataka and Ulrich Drepper.
1440 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1441 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1442 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1444 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1445 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1447 * The LANGUAGE environment variable is now ignored unless the locale is
1448 changed from the default "C" locale.
1450 * The usual bug fixes.
1454 * Greg McGary added runtime support for bounds checking using gcc's
1455 new -fbounded-pointers option. ix86 target is complete. PowerPC
1458 * Thorsten Kukuk added secure mode support to nscd.
1460 * The Berkeley db libraries have been removed.
1462 Related, the nss_db module is now in a separate package since it
1463 obviously requires a database library being available.
1465 * Wide character I/O streams implemented by Ulrich Drepper.
1467 * Functions from the extended socket API added by Ulrich Drepper.
1469 * Functions feenableexcept and fedisableexcept to control the
1470 behaviour of individual exceptions have been added by Andreas Jaeger.
1472 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1474 * The resolver code has been updated from bind 8.2.3-T5B which supports
1475 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1478 This change could in some situations effect backward compatibility. Since
1479 now `_res' is a thread-local instead of a global variable, modifying it
1480 in one thread does not have any effect in other threads.
1482 The resolver library was also extended to allow IPv6 as the transport
1483 protocol for the requests. This work was done by Stig Venaas.
1485 * Compatibility code for K&R C compilers has been removed from the
1486 header files. A ISO C compiler is needed to use the library
1487 (conforming to either C89 or C99 standard).
1489 * Complete rewrite of the localedef program to support multibyte character
1490 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1491 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1492 Implemented by Ulrich Drepper.
1494 Bruno Haible significantly improved the generation and use of the data
1495 structures for the wide character tables.
1497 * Plural handling in gettext implemented by Ulrich Drepper.
1499 * The utmp daemon has been removed.
1501 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1503 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1506 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1508 * POSIX barriers implemented by Kaz Kylheku.
1510 * POSIX spawn function family implemented by Ulrich Drepper.
1512 * POSIX spinlocks are now available.
1514 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1516 * the configure option --enable-kernel=X.Y.Z allows to strip out
1517 compatibility for kernel versions before X.Y.Z. This is currently only
1518 implemented for Linux.
1520 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1521 field sin6_scope_id. This means that all programs using IPv6 should be
1522 recompiled. Don't expect binary compatibility with previous glibc
1525 * various conversion modules for IBM character sets contributed by
1528 * IA-64 port by Jes Sorensen and HJ Lu.
1542 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1544 * New xdr functions are added; some rpc functions are now 64bit clean.
1546 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1548 * Fixed known incompatibilities with glibc 2.0.
1550 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1552 * Optimized a number of functions (especially the ELF dynamic loader).
1554 * Update timezone data files.
1556 * lots of charmaps corrections
1558 * some new locale definitions and charmaps
1563 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1564 conform to POSIX member type requirements. Symbol versions have been
1565 adjusted as needed within the library, and for direct use by applications,
1566 but there is potential for problems if third-party libraries use
1567 struct timeval as part of their interface. This does not present
1568 a problem for X and other "essential" system libraries.
1570 * An additional locale model to support C++ Standard Library locale
1571 model and probably more was implemented by Ulrich Drepper.
1573 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1576 * Miles Bader provided the `argp' function family to support hierachical
1577 command line argument parsing, layered on top of getopt.
1579 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1581 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1584 * scanf recognizes the %a and %A format for scanning floating point numbers.
1586 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1587 information and interfaces for the available integer types.
1589 * about 130 new math functions were added to implement the ISO C9x math
1592 * the new header <complex.h> contains definitions of the complex math
1593 functions from ISO C 9X.
1595 * the new header <tgmath.h> defines generic macros to use complex or
1596 real valued functions.
1598 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1600 * Andreas Jaeger provided a test suite for the math library.
1602 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1604 * Ulrich Drepper added character set conversion functions (iconv).
1606 * Optimized string functions have been added.
1608 * The localedata addon is now part of glibc.
1610 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1612 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1613 daemon for NSS (nscd).
1615 Missing a better place here are some numbers on improvements. Under
1616 Linux 2.1.125 un-tar-ing the kernel sources takes
1620 using local files 12.19s 6.88s 22.91s
1622 using NIS 13.92s 8.91s 26.34s
1624 using NIS & nscd 10.37s 7.34s 25.30s
1626 using NIS+ 27.57s 30.37s 640.46s
1628 using NIS+ & nscd 10.25s 7.83s 26.51s
1630 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1632 Keep in mind that non-namelookup related operations dominate above times.
1633 It was just a common complain that using NIS+ unpacking the kernel is
1636 [1] The old nscd implementation is not available anymore since it was
1637 distributed with glibc up to version 2.0.98 and thus is now replaced.
1639 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1641 * Mark Kettenis provided a Hesiod NSS module.
1643 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1644 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1646 * rcmd can now handle netgroups (Dick Streefland).
1648 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1651 * Support for the IPv6 protocol has been added to the socket API, as per the
1652 latest draft standards.
1654 * Support for Linux 2.2 has been added.
1656 * Interface changes relative to the latest 2.0.x release:
1657 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1658 addseverity NEW: Unix98
1659 alphasort64 NEW: LFS
1660 argp_err_exit_status NEW: argp, GNU ext
1661 argp_error NEW: argp, GNU ext
1662 argp_failure NEW: argp, GNU ext
1663 argp_help NEW: argp, GNU ext
1664 argp_parse NEW: argp, GNU ext
1665 argp_program_bug_address NEW: argp, GNU ext
1666 argp_program_version NEW: argp, GNU ext
1667 argp_program_version_hook NEW: argp, GNU ext
1668 argp_state_help NEW: argp, GNU ext
1669 argp_usage NEW: argp, GNU ext
1670 authdes_create NEW: Secure RPC
1671 authdes_getucred NEW: Secure RPC
1672 authdes_pk_create NEW: Secure RPC
1673 backtrace NEW: GNU ext.
1674 backtrace_symbols NEW: GNU ext.
1675 backtrace_symbols_fd NEW: GNU ext.
1677 cacosf NEW: ISO C 9x
1678 cacosh NEW: ISO C 9x
1679 cacoshf NEW: ISO C 9x
1680 cacoshl NEW: ISO C 9x
1681 cacosl NEW: ISO C 9x
1688 casinf NEW: ISO C 9x
1689 casinh NEW: ISO C 9x
1690 casinhf NEW: ISO C 9x
1691 casinhl NEW: ISO C 9x
1692 casinl NEW: ISO C 9x
1694 catanf NEW: ISO C 9x
1695 catanh NEW: ISO C 9x
1696 catanhf NEW: ISO C 9x
1697 catanhl NEW: ISO C 9x
1698 catanl NEW: ISO C 9x
1699 cbc_crypt NEW: Secure RPC
1703 ccoshf NEW: ISO C 9x
1704 ccoshl NEW: ISO C 9x
1710 cimagf NEW: ISO C 9x
1711 cimagl NEW: ISO C 9x
1712 clearerr_locked REMOVED
1713 clntunix_create NEW: sunrpc ext
1715 clog10 NEW: ISO C 9x
1716 clog10f NEW: ISO C 9x
1717 clog10l NEW: ISO C 9x
1727 cprojf NEW: ISO C 9x
1728 cprojl NEW: ISO C 9x
1730 crealf NEW: ISO C 9x
1731 creall NEW: ISO C 9x
1736 csinhf NEW: ISO C 9x
1737 csinhl NEW: ISO C 9x
1740 csqrtf NEW: ISO C 9x
1741 csqrtl NEW: ISO C 9x
1745 ctanhf NEW: ISO C 9x
1746 ctanhl NEW: ISO C 9x
1748 des_setparity NEW: Secure RPC
1749 ecb_crypt NEW: Secure RPC
1750 endutxent NEW: Unix98
1752 exp10f NEW: ISO C 9x
1753 exp10l NEW: ISO C 9x
1757 fattach NEW: STREAMS
1758 fdetach NEW: STREAMS
1762 feclearexcept NEW: ISO C 9x
1763 fegetenv NEW: ISO C 9x
1764 fegetexceptflag NEW: ISO C 9x
1765 fegetround NEW: ISO C 9x
1766 feholdexcept NEW: ISO C 9x
1768 feraiseexcept NEW: ISO C 9x
1769 ferror_locked REMOVED
1770 fesetenv NEW: ISO C 9x
1771 fesetexceptflag NEW: ISO C 9x
1772 fesetround NEW: ISO C 9x
1773 fetestexcept NEW: ISO C 9x
1774 feupdateenv NEW: ISO C 9x
1775 fflush_locked REMOVED
1779 fgets_unlocked NEW: GNU ext.
1780 fileno_locked REMOVED
1792 fputc_locked REMOVED
1793 fputs_unlocked NEW: GNU ext.
1794 fread_unlocked NEW: GNU ext.
1799 fstatvfs NEW: Unix98
1803 ftruncate64 NEW: LFS
1805 fwrite_unlocked NEW: GNU ext.
1806 gai_strerror NEW: IPv6
1810 getchar_locked REMOVED
1812 getdate_err NEW: Unix98
1813 getdate_r NEW: GNU ext.
1815 getnameinfo NEW: IPv6
1816 getnetname NEW: Secure RPC
1817 getpmsg NEW: STREAMS
1818 getpt NEW: Unix98 PTY
1819 getrlimit64 NEW: LFS
1820 getutxent NEW: Unix98
1821 getutxid NEW: Unix98
1822 getutxline NEW: Unix98
1823 glob64 NEW: GNU ext.
1824 globfree64 NEW: GNU ext.
1825 gnu_get_libc_release NEW: GNU ext.
1826 gnu_get_libc_version NEW: GNU ext.
1827 grantpt NEW: Unix98 PTY
1828 host2netname NEW: Secure RPC
1830 iconv_close NEW: iconv
1831 iconv_open NEW: iconv
1832 if_freenameindex NEW: IPv6
1833 if_indextoname NEW: IPv6
1834 if_nameindex NEW: IPv6
1835 if_nametoindex NEW: IPv6
1836 in6addr_any NEW: IPv6
1837 in6addr_loopback NEW: IPv6
1838 inet6_isipv4mapped NEW: IPv6
1839 isastream NEW: STREAMS
1840 iswblank NEW: GNU ext.
1841 key_decryptsession NEW: Secure RPC
1842 key_decryptsession_pk NEW: Secure RPC
1843 key_encryptsession NEW: Secure RPC
1844 key_encryptsession_pk NEW: Secure RPC
1845 key_gendes NEW: Secure RPC
1846 key_get_conv NEW: Secure RPC
1847 key_secretkey_is_set NEW: Secure RPC
1848 key_setnet NEW: Secure RPC
1849 key_setsecret NEW: Secure RPC
1850 llrint NEW: ISO C 9x
1851 llrintf NEW: ISO C 9x
1852 llrintl NEW: ISO C 9x
1853 llround NEW: ISO C 9x
1854 llroundf NEW: ISO C 9x
1855 llroundl NEW: ISO C 9x
1860 lrintf NEW: ISO C 9x
1861 lrintl NEW: ISO C 9x
1862 lround NEW: ISO C 9x
1863 lroundf NEW: ISO C 9x
1864 lroundl NEW: ISO C 9x
1866 makecontext NEW: Unix98
1867 mempcpy NEW: GNU ext.
1870 modify_ldt NEW: kernel
1874 nearbyint NEW: ISO C 9x
1875 nearbyintf NEW: ISO C 9x
1876 nearbyintl NEW: ISO C 9x
1877 netname2host NEW: Secure RPC
1878 netname2user NEW: Secure RPC
1879 nexttoward NEW: ISO C 9x
1880 nexttowardf NEW: ISO C 9x
1881 nexttowardl NEW: ISO C 9x
1885 passwd2des NEW: Secure RPC
1887 pow10f NEW: GNU ext.
1888 pow10l NEW: GNU ext.
1891 printf_size NEW: GNU ext.
1892 printf_size_info NEW: GNU ext.
1893 profil_counter REMOVED
1894 pthread_mutexattr_getkind_np REPLACED
1895 pthread_mutexattr_setkind_np REPLACED
1896 ptsname NEW: Unix98 PTY
1897 ptsname_r NEW: Unix98 PTY
1899 putchar_locked REMOVED
1900 putgrent NEW: GNU ext.
1902 putpmsg NEW: STREAMS
1903 pututxline NEW: Unix98
1907 readdir64_r NEW: LFS
1908 remquo NEW: ISO C 9x
1909 remquof NEW: ISO C 9x
1910 remquol NEW: ISO C 9x
1912 roundf NEW: ISO C 9x
1913 roundl NEW: ISO C 9x
1915 scalbln NEW: ISO C 9x
1916 scalblnf NEW: ISO C 9x
1917 scalblnl NEW: ISO C 9x
1919 sendfile NEW: kernel
1920 setcontext NEW: Unix98
1921 setrlimit64 NEW: LFS
1922 setutxent NEW: Unix98
1924 sigignore NEW: Unix98
1925 sigqueue NEW: POSIX.1b
1926 sigrelse NEW: Unix98
1927 sigset NEW: POSIX.1b
1928 sigtimedwait NEW: POSIX.1b
1929 sigwaitinfo NEW: POSIX.1b
1930 sincos NEW: GNU ext.
1931 sincosf NEW: GNU ext.
1932 sincosl NEW: GNU ext.
1936 strcasestr NEW: GNU ext.
1937 strtoimax NEW: ISO C 9x
1938 strtoumax NEW: ISO C 9x
1939 strverscmp NEW: GNU ext.
1940 svcauthdes_stats NEW: Secure RPC
1941 svcunix_create NEW: sunrpc etx
1942 svcunixfd_create NEW: sunrpc ext
1943 swapcontext NEW: Unix98
1944 tcgetsid NEW: Unix98 PTY
1945 tdestroy NEW: GNU ext.
1946 tgamma NEW: ISO C 9x
1947 tgammaf NEW: ISO C 9x
1948 tgammal NEW: ISO C 9x
1952 truncf NEW: ISO C 9x
1953 truncl NEW: ISO C 9x
1955 unlockpt NEW: Unix98 PTY
1956 updwtmpx NEW: Unix98
1957 user2netname NEW: Secure RPC
1958 utmpxname NEW: Unix98
1959 versionsort NEW: GNU ext.
1960 versionsort64 NEW: GNU ext.
1962 wcscasecmp NEW: GNU ext.
1963 wcsncasecmp NEW: GNU ext.
1964 wcsnlen NEW: GNU ext.
1965 wcstoimax NEW: ISO C 9x
1966 wcstoll NEW: ISO C 9x
1967 wcstoull NEW: ISO C 9x
1968 wcstoumax NEW: ISO C 9x
1970 wordexp NEW: POSIX.2
1971 wordfree NEW: POSIX.2
1972 write_profiling REMOVED
1973 xdecrypt NEW: Secure RPC
1974 xdr_authdes_cred NEW: Secure RPC
1975 xdr_authdes_verf NEW: Secure RPC
1976 xdr_cryptkeyarg NEW: Secure RPC
1977 xdr_cryptkeyarg2 NEW: Secure RPC
1978 xdr_cryptkeyres NEW: Secure RPC
1979 xdr_getcredres NEW: Secure RPC
1980 xdr_key_netstarg NEW: Secure RPC
1981 xdr_key_netstres NEW: Secure RPC
1982 xdr_keybuf NEW: Secure RPC
1983 xdr_keystatus NEW: Secure RPC
1984 xdr_netnamestr NEW: Secure RPC
1985 xdr_sizeof NEW: Secure RPC
1986 xdr_unixcred NEW: sunrpc ext
1987 xencrypt NEW: Secure RPC
1988 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1999 * inet_ntoa is thread-safe
2001 * updwtmp is moved from libutil to libc
2003 * rewrite of cbrt function
2005 * update of timezone data
2019 * add atoll function
2021 * fix complex problems in Berkeley DB code
2023 * fix math functions
2027 * fixed lots of header problems (especially Linux/GNU specific)
2029 * dynamic loader preserves all registers
2031 * Roland McGrath provided support for handling of auxiliary objects in
2032 the ELF dynamic loader.
2034 * support for parallel builds is improved
2038 * GNU extensions are no longer declared by default. To enable them you
2039 must define the macro `_GNU_SOURCE' in your program or compile with
2042 * The library has changed from using GNU ld symbol aliases to using weak
2043 symbols where available. The ELF object file format supports weak
2044 symbols; GNU ld also supports weak symbols in the a.out format. (There
2045 is also now support for other GNU ld extensions in ELF. Use the
2046 `--with-elf' option to configure to indicate you have ELF, and
2047 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2048 of many files which contained only symbol aliases, reducing the size of
2049 the source and the compiled library; many other files were renamed to
2050 less cryptic names previously occupied by the symbol alias files.
2051 There is a new header file <elf.h> for programs which operate on
2052 files in the ELF format.
2054 * Converted to Autoconf version 2, so `configure' has more options.
2055 Run `configure --help' to see the details.
2057 * The library can now be configured to build profiling, highly-optimized
2058 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2059 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2060 `configure' enable building these extra libraries. The shared library is
2061 built by default when using both ELF and GNU ld. When shared libraries
2062 are enabled, the new library `-ldl' is available for arbitrary run-time
2063 loading of shared objects; its interface is defined in <dlfcn.h>. The
2064 new header file <link.h> gives access to the internals of the run-time
2065 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2066 application of same name on other systems and it provides information
2067 about dynamically linked binaries.
2069 * The C library now provides the run-time support code for profiling
2070 executables compiled with `-pg'. Programs can control the profiling code
2071 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2072 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2073 the support for this file format was contributed by David Mosberger-Tang.
2075 * The math code has been replaced with a math library based on fdlibm from
2076 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2077 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2078 functions. The math functions now reside in a separate library, so
2079 programs using them will need to use `-lm' their linking commands.
2081 * John C. Bowman contributed optimized ix87 assembler inline functions.
2083 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2084 mechanism similar to that found in Solaris 2. This is now used for the
2085 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2086 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2087 file controls what services are used for each individual database. This
2088 works by loading shared libraries with names specified in `nsswitch.conf',
2089 so service modules can be changed or added at any time without even
2090 relinking any program. Currently there are the file, db, and NIS based
2091 NSS services available.
2093 * The new functions `strtoq' and `strtouq' parse integer values from
2094 strings, like `strtol' and `strtoul', but they return `long long int' and
2095 `unsigned long long int' values, respectively (64-bit quantities).
2097 * The new functions `strtof' and `strtold' parse floating-point values from
2098 strings, like `strtod', but they return `float' and `long double' values,
2099 respectively (on some machines `double' and `long double' are the same).
2101 * Ulrich Drepper has contributed new implementations of the floating-point
2102 printing and reading code used in the `printf' family of functions and
2103 `strtod', `strtof', and `strtold'. These new functions are perfectly
2104 accurate, and much faster than the old ones.
2106 * The implementation of the POSIX locale model was completely rewritten by
2107 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2108 to compile the POSIX locale definition.
2110 * The former dummy implementations of the strcoll and strxfrm function are
2111 now replaced by fully functional code contributed by Ulrich Drepper. The
2112 collation information comes from the POSIX locale definitions.
2114 * The new header <langinfo.h> defines an interface for accessing
2115 various locale-dependent data (using the locale chosen with `setlocale').
2117 * Ulrich Drepper has contributed a new suite of functions for operation on
2118 wide-character and multibyte-character strings, in <wchar.h>;
2119 and classification and case conversion of wide characters, in <wctype.h>.
2120 These new functions are conforming to the ISO C, Amendement 1 specification.
2122 * There is now a second implementation of the standard I/O library available.
2123 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2124 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2126 * You can now use positional parameter specifications in format strings
2127 for the `printf' and `scanf' families of functions. For example,
2128 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2129 ``Number 6, Mr Jones''. This is mainly useful when providing different
2130 format strings for different languages, whose grammars may dictate
2131 different orderings of the values being printed. To support this
2132 feature, the interface for `register_printf_handler' has changed; see
2133 the header file <printf.h> for details.
2135 * The `printf' and `scanf' families of functions now understand a new
2136 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2137 to group numbers as indicated by the locale; for `scanf' and friends, this
2138 says to accept as valid only a number with all the proper grouping
2139 separators in the right places. In the default "C" locale, numbers are
2140 not grouped; but locales for specific countries will define the usual
2141 conventions (i.e. separate thousands with `,' in the US locale).
2143 * The pgrp functions have been regularized, slightly incompatibly but much
2144 less confusingly. The core functions are now `getpgid' and `setpgid',
2145 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2146 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2147 provided for compatibility. There is no longer an incompatible `getpgrp'
2148 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2150 * The new header file <fts.h> and suite of functions simplify programs that
2151 operate on directory trees. This code comes from 4.4 BSD.
2153 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2154 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2155 NSS scheme used in glibc.
2157 * There is a new malloc debugging hook `__memalign_hook'.
2159 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2160 `unsigned int' in <sys/types.h>. These are for compatibility only and
2161 their use is discouraged.
2163 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2164 done differently, so that it works even without GNU ld.
2166 * New function `euidaccess' checks allowed access to a file like `access',
2167 but using the effective IDs instead of the real IDs.
2169 * The time zone data files have been updated for the latest and greatest
2170 local time conventions of the countries of the world.
2172 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2175 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2176 for formatting floating-point numbers. They are provided only for
2177 compatibility; new programs should use `sprintf' instead. There are
2178 also equivalent function for the `long double' floating-point type and
2179 all functions also exist in a reentrant form.
2181 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2182 functions for maintaining the login-record files (primarily of use to
2183 system programs such as `login'), and convenient functions for
2184 allocating and initializing a pseudo-terminal (pty) device.
2186 * Ulrich Drepper has contributed new support for System V style
2187 shared memory and IPC on systems that support it.
2189 * Ulrich Drepper has contributed several miscellaneous new functions found
2190 in System V: The `hsearch' family of functions provide an effective
2191 implementation of hash tables; `a64l' and `l64a' provide a very simple
2192 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2195 * Ulrich Drepper has contributed new reentrant counterparts for the
2196 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2198 * Ulrich Drepper has contributed new, highly-optimized versions of several
2199 string functions for the i486/Pentium family of processors.
2201 * Ulrich Drepper has updated the Linux-specific code, based largely
2202 on work done in Hongjiu Lu's version of GNU libc for Linux.
2203 The GNU library now supports Linux versions 2.0.10 and later,
2204 using the ELF object file format (i[3456]86-*-linux).
2206 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2208 * David Mosberger-Tang and Richard Henderson have ported the C library
2209 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2210 dynamic linking support for ELF/Alpha.
2212 * Richard Henderson contributed several Alpha optimized assembler function
2213 for arithmetic and string handling.
2215 * Ulrich Drepper has contributed a new set of message catalog functions to
2216 support multiple languages using the <libintl.h> interface, for use with
2217 his new package GNU gettext. Translation volunteers have contributed
2218 catalogs of the library's messages in Spanish, German, and Korean.
2220 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2221 program and the `catgets' function for reading the catalog files it
2222 creates. (The <libintl.h> interface is preferred; we include the
2223 <nl_types.h> interface using `catgets' only for source compatibility with
2224 programs already written to use it.)
2226 * New header file <values.h> gives SVID-compatible names for <limits.h>
2229 * Various new macros, declarations, and small header files for compatibility
2232 * New function `group_member' is a convenient way to check if a process has
2233 a given effective group ID.
2235 * When using GCC 2.7 and later, the socket functions are now declared in a
2236 special way so that passing an argument of type `struct sockaddr_in *',
2237 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2238 `struct sockaddr *' type, does not generate a type-clash warning.
2240 * New function `error' declared in header file <error.h> is a convenient
2241 function for printing error messages and optionally exiting; this is the
2242 canonical function used in GNU programs. The new functions `err', `warn',
2243 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2244 doing the same thing.
2246 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2247 POSIX.2 `glob' function to do ~ and {...} expansion.
2249 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2250 `clearenv' which is used in POSIX.9 is also available.
2252 * New function `getsid' returns session ID number on systems that support it.
2254 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2255 files <db.h> and <mpool.h> provide a rich set of functions for several
2256 types of simple databases stored in memory and in files, and <ndbm.h> is
2257 an old `ndbm'-compatible interface using the `db' functions. Link with
2258 `-ldb' to get these functions.
2260 * New macro `strdupa' copies a string like `strdup', but uses local stack
2261 space from `alloca' instead of dynamic heap space from `malloc'.
2263 * New function `strnlen' is like `strlen' but searches only a given maximum
2264 number of characters for the null terminator. `stpncpy', `strndup' and
2265 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2268 * New function `statfs' in header <sys/statfs.h>.
2270 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2271 provide convenient functions for operating on blocks of null-terminated
2274 * A new suite of functions in <utmp.h> handle all the details of reading
2275 and writing the utmp file.
2277 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2280 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2281 completely POSIX compliant and also implemented the extended functionality
2282 to handle alternate digit representation and alternate era date formats.
2284 * Ulrich Drepper provided an implementation of the `strptime' function
2285 defined in XPG4.2 which transforms a string into a `struct tm' value.
2287 * Paul Eggert provided the tzselect shell script as part of the timezone
2288 code. The shell script makes it easy to select the correct timezone
2291 * The implementation of the malloc family of functions is completely replaced
2292 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2293 The implementation uses the mmap function (if available) and it is
2294 optimized for the use in multi threaded programs.
2296 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2297 functions. This new functionality is usable by specifying a special
2298 salt string and it is compatible with implementation on *BSD systems.
2300 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2301 `getsubopt' to handle second level command line options, `bsd_signal'
2302 to access BSD style `signal' functionality, the obsolete `regexp' style
2305 * the `lchown' function is available on system which support this
2308 * The implementation of the shadow password handling function was contributed
2311 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2313 * POSIX.1g support was added. The <sys/select.h> header is available,
2314 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2315 implementation of `getaddrinfo'.
2319 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2321 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2322 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2324 * The new function `daemon' from 4.4 BSD is useful for server programs that
2325 want to put themselves in the background.
2327 * Joel Sherrill has contributed support for several standalone boards that
2328 run without an operating system.
2330 * `printf', `scanf' and friends now accept a `q' type modifier for long
2331 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2333 * All of the code taken from BSD (notably most of the math and networking
2334 routines) has been updated from the BSD 4.4-Lite release.
2336 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2338 * The new functions `getdomainname' and `setdomainname' fetch or change the
2339 YP/NIS domain name. These are system calls which exist on systems which
2342 * The time zone data files have been updated for the latest international
2345 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2346 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2350 * The C library now includes support for Sun RPC, from Sun's free
2351 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2352 are included. (There is still no support for YP.)
2354 * Tom Quinn has contributed a port of the C library to SGI machines running
2355 Irix 4 (mips-sgi-irix4).
2357 * The new `lockf' function is a simplified interface to the locking
2358 facilities of `fcntl', included for compatibility.
2360 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2362 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2364 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2367 * The error message printed by `assert' for a failed assertion now includes
2368 the name of the program (if using GNU ld) and the name of the calling
2369 function (with versions of GCC that support this).
2371 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2373 * The library now includes the <sys/mman.h> header file and memory
2374 management functions `mmap', `munmap', `mprotect', `msync', and
2375 `madvise', on systems that support those facilities.
2377 * The interface for `mcheck' has changed slightly: the function called to
2378 abort the program when an allocation inconsistency is detected now takes
2379 an argument that indicates the type of failure. The new function
2380 `mprobe' lets you request a consistency check for a particular block at
2381 any time (checks are normally done only when you call `free' or `realloc'
2384 * It is now possible to easily cross-compile the C library, building on one
2385 system a library to run on another machine and/or operating system. All
2386 you need to do is set the variable `HOST_CC' in `configparms' to the
2387 native compiler for programs to run on the machine you are building on (a
2388 few generator programs are used on Unix systems); set `CC' to the
2391 * The new function `fexecve' (only implemented on the GNU system) executes
2392 a program file given a file descriptor already open on the file.
2396 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2397 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2399 * You can set the variable `libprefix' in `configparms' to specify a prefix
2400 to be prepended to installed library files; this makes it easy to install
2401 the GNU C library to be linked as `-lgnuc' or whatever.
2403 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2404 copies a limited number of characters from a string, and returns the
2405 address of the last character written.
2407 * You no longer need to check for whether the installed `stddef.h' is
2408 compatible with the GNU C library. configure now checks for you.
2410 * You can now define a per-stream `fileno' function to convert the
2411 stream's cookie into an integral file descriptor.
2413 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2414 allocates zero bytes of storage, and returns a unique pointer which
2415 you can pass to `realloc' or `free'. The behavior is undefined if
2416 you dereference this pointer.
2418 * The C library now runs on Sony NEWS m68k machines running either
2419 NewsOS 3 or NewsOS 4.
2421 * The new `syscall' function is a system-dependent primitive function
2422 for invoking system calls. It has the canonical behavior on Unix
2423 systems, including unreliable return values for some calls (such as
2424 `pipe', `fork' and `getppid').
2426 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2427 to `EAGAIN', which is the preferred name. On systems whose kernels
2428 use two distinct codes, the C library now translates EWOULDBLOCK to
2429 EAGAIN in every system call function.
2433 * The GNU C Library Reference Manual is now distributed with the library.
2434 `make dvi' will produce a DVI file of the printed manual.
2435 `make info' will produce Info files that you can read on line using C-h i
2436 in Emacs or the `info' program.
2437 Please send comments on the manual to bug-glibc-manual@gnu.org.
2439 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2441 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2443 * Jason Merrill has contributed a port to the Sequent Symmetry running
2444 Dynix version 3 (i386-sequent-dynix).
2446 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2447 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2449 * New function `memory_warnings' lets you arrange to get warnings when
2450 malloc is running out of memory to allocate, like Emacs gives you.
2452 * The C library now contains the relocating allocator used in Emacs 19 for
2453 its editing buffers. This allocator (ralloc) minimizes allocation
2454 overhead and fragmentation by moving allocated regions around whenever it
2455 needs to. You always refer to a ralloc'd region with a "handle" (a
2456 pointer to a pointer--an object of type `void **').
2458 * There is a new `printf' format: `%m' gives you the string corresponding
2459 to the error code in `errno'.
2461 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2462 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2463 pass, the `a' modifier says to fill in a `char **' you pass with a
2466 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2467 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2468 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2470 * `mkstemp' is a traditional Unix function to atomically create and open a
2471 uniquely-named temporary file.
2475 * The standard location for the file that says what the local timezone is
2476 has changed again. It is now `/usr/local/etc/localtime' (or more
2477 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2479 * The distribution no longer contains any files with names longer than 14
2482 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2483 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2485 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2489 * The configuration process has changed quite a bit. The `configure'
2490 script is now used just like the configuration scripts for other GNU
2491 packages. The `sysdeps' directory hierarchy is much rearranged.
2492 The file `INSTALL' explains the new scheme in detail.
2494 * The header files no longer need to be processed into ANSI C and
2495 traditional C versions. There is just one set of files to install, and
2496 it will work with ANSI or old C compilers (including `gcc -traditional').
2498 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2499 MIPS DECStation running Ultrix 4.
2501 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2502 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2503 made itself into a shared library.
2505 * Yet further improved support for the i386, running 4.3 BSD-like systems
2506 (such as Mach 3 with the Unix single-server), or System V.
2508 * New function `strncasecmp' to do case-insensitive string comparison
2509 with limited length.
2511 * New function `strsep' is a reentrant alternative to `strtok'.
2513 * New functions `scandir' and `alphasort' for searching directories.
2515 * New function `setenv' is a better interface to `putenv'.
2517 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2518 function for traversing a directory tree.
2520 * The GNU obstack package is now also part of the C library.
2521 The new function `open_obstack_stream' creates a stdio stream that
2522 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2523 formatted output directly to an obstack.
2525 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2526 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2528 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2530 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2531 things to your strings.
2533 * There are some new test programs: test-fseek, testmb, and testrand.
2535 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2536 These ports are not finished, but are a good starting place for really
2537 supporting those systems.
2539 * `/etc/localtime' is now the standard location for the file that says what
2540 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2541 This follows the general principle that `/etc' is the place for all local
2542 configuration files.
2544 * The C library header files now use `extern "C"' when used by the C++
2545 compiler, so the C library should now work with C++ code.
2547 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2548 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2551 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2552 function which uses the `merge sort' algorithm, and is said to be
2553 significantly faster than the old GNU `qsort' function. Merge sort is
2554 now the standard `qsort' function. The new algorithm can require a lot
2555 of temporary storage; so, the old sorting function is called when the
2556 required storage is not available.
2558 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2559 provides the Unix `crypt' function, plus some other entry points.
2561 * The code and header files taken from 4.4 BSD have been updated with the
2562 latest files released from Berkeley.
2564 ----------------------------------------------------------------------
2565 Copyright information:
2567 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2569 Permission is granted to anyone to make or distribute verbatim copies
2570 of this document as received, in any medium, provided that the
2571 copyright notice and this permission notice are preserved,
2572 thus giving the recipient permission to redistribute in turn.
2574 Permission is granted to distribute modified versions
2575 of this document, or of portions of it,
2576 under the above conditions, provided also that they
2577 carry prominent notices stating who last changed them.
2580 version-control: never
projects / platform / upstream / linaro-glibc.git / blob