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1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2013 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.
7 \f
8 Version 2.19
10 * The following bugs are resolved with this release:
12 156, 387, 431, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 7003, 9954,
13 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12986, 13028, 13982,
14 13985, 14029, 14032, 14120, 14143, 14155, 14547, 14699, 14752, 14876,
15 14910, 15004, 15048, 15073, 15089, 15128, 15218, 15268, 15277, 15308,
16 15362, 15374, 15400, 15425, 15427, 15483, 15522, 15531, 15532, 15593,
17 15601, 15608, 15609, 15610, 15632, 15640, 15670, 15672, 15680, 15681,
18 15723, 15734, 15735, 15736, 15748, 15749, 15754, 15760, 15763, 15764,
19 15797, 15799, 15825, 15843, 15844, 15846, 15847, 15849, 15855, 15856,
20 15857, 15859, 15867, 15886, 15887, 15890, 15892, 15893, 15895, 15897,
21 15901, 15905, 15909, 15915, 15917, 15919, 15921, 15923, 15939, 15941,
22 15948, 15963, 15966, 15985, 15988, 15997, 16032, 16034, 16036, 16037,
23 16038, 16041, 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112,
24 16143, 16144, 16146, 16150, 16151, 16153, 16167, 16172, 16195, 16214,
25 16245, 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337,
26 16338, 16356.
28 * The public headers no longer use __unused nor __block. This change is to
29 support compiling programs that are derived from BSD sources and use
30 __unused internally, and to support compiling with Clang's -fblock
31 extension which uses __block.
33 * CVE-2012-4412 The strcoll implementation caches indices and rules for
34 large collation sequences to optimize multiple passes. This cache
35 computation may overflow for large collation sequences and may cause a
36 stack or buffer overflow. This is now fixed to use a slower algorithm
37 which does not use a cache if there is an integer overflow.
39 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
40 rules for large collation sequences to optimize multiple passes and falls
41 back to alloca if malloc fails, resulting in a possible stack overflow.
42 The implementation now falls back to an uncached collation sequence lookup
43 if malloc fails.
45 * CVE-2013-4788 The pointer guard used for pointer mangling was not
46 initialized for static applications resulting in the security feature
47 being disabled. The pointer guard is now correctly initialized to a
48 random value for static applications. Existing static applications need
49 to be recompiled to take advantage of the fix (bug 15754).
51 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
52 to the d_name member of struct dirent, or omit the terminating NUL
53 character. (Bugzilla #14699).
55 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
56 aligned_alloc functions could allocate too few bytes or corrupt the
57 heap when passed very large allocation size values (Bugzilla #15855,
58 #15856, #15857).
60 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
61 for AF_INET6 has been fixed (Bugzilla #16072).
63 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
64 pap_CW, quz_PE, the_NP.
66 * Substantially revised locales: gd_GB, ht_HT
68 * The LC_ADDRESS field was updated to support country_car for almost all
69 supported locales.
71 * ISO 1427 definitions were updated.
73 * ISO 3166 definitions were updated.
75 * The localedef utility now supports --big-endian and --little-endian
76 command-line options to generate locales for a different system from that
77 for which the C library was built.
79 * Binary locale files now only depend on the endianness of the system for
80 which they are generated and not on other properties of that system. As a
81 consequence, binary files generated with new localedef may be incompatible
82 with old versions of the GNU C Library, and binary files generated with
83 old localedef may be incompatible with this version of the GNU C Library,
84 in the following circumstances:
86 + Locale files may be incompatible on m68k systems.
88 + Locale archive files (but not separate files for individual locales) may
89 be incompatible on systems where plain "char" is signed.
91 * The configure option --disable-versioning has been removed. Builds with
92 --disable-versioning had not worked for several years.
94 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
95 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
97 * SystemTap probes for malloc have been introduced.
99 * Support for powerpc64le has been added.
101 * The soft-float powerpc port now supports e500 processors.
103 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
105 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
106 set of header declarations that are enabled by default, even when other
107 feature test macros or compiler options such as -std=c99 would otherwise
108 disable some of those declarations.
110 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
111 conflict with POSIX. The libbsd-compat library (which was a dummy library
112 that did nothing) has also been removed.
113 \f
114 Version 2.18
116 * The following bugs are resolved with this release:
118 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
119 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
120 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
121 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
122 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
123 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
124 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
125 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
126 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
127 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
128 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
129 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
130 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
131 15759.
133 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
134 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
135 Distributions can re-enable building and using pt_chown via the new configure
136 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
137 considerable security risks and should only be used if the distribution
138 understands and accepts the risks.
140 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
141 #15078).
143 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
144 fixed (Bugzilla #15330).
146 * Add support for calling C++11 thread_local object destructors on thread
147 and program exit. This needs compiler support for offloading C++11
148 destructor calls to glibc.
150 * Improved worst case performance of libm functions with double inputs and
151 output.
153 * Support for priority inherited mutexes in pthread condition variables on
154 non-x86 architectures.
156 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
158 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
160 * Optimized string functions for ARM. Implemented by Will Newton and
161 Richard Henderson.
163 * Optimized libm functions for SPARC. Implemented by David S. Miller.
165 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
166 Richard Henderson.
168 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
169 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
171 * Added a benchmark framework to track performance of functions in glibc.
173 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
174 It is based on draft TS 18661 and currently enabled as a GNU extension.
176 * On Linux, the clock function now uses the clock_gettime system call
177 for improved precision, rather than old times system call.
179 * Added support for version-3 tz format files. This is needed when using
180 the tz database release 2013e or later, and affects a few unusual cases --
181 currently only TZ='America/Godthab' for time stamps after 2037.
183 * Added new API functions pthread_getattr_default_np and
184 pthread_setattr_default_np to get and set the default pthread
185 attributes of a process.
187 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
188 This may improve lock scaling of existing programs on TSX capable systems.
189 When the --enable-lock-elision=yes parameter is specified at configure
190 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
191 mutexes.
193 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
194 availability). Implemented by Ryan S. Arnold.
196 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
197 \f
198 Version 2.17
200 * The following bugs are resolved with this release:
202 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
203 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
204 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
205 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
206 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
207 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
208 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
209 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
210 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
211 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
212 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
213 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
214 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
215 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
216 14879, 14889, 14893, 14898, 14914.
218 * Optimization of memcpy for MIPS.
220 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
221 EMFILE has been fixed (Bugzilla #14889).
223 * The add-on ports collection is now distributed in the "ports" subdirectory
224 of the main GNU C Library distribution, rather than separately.
226 * Port to ARM AArch64 contributed by Linaro.
228 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
229 Optimized versions of memcpy, memset, and memcmp added for System z10 and
230 zEnterprise z196.
231 Implemented by Andreas Krebbel.
233 * The new function secure_getenv allows secure access to the environment,
234 returning NULL if running in a SUID/SGID process. This function replaces
235 the internal function __secure_getenv.
237 * SystemTap static probes have been added into the dynamic linker.
238 Implemented by Gary Benson.
240 * Optimizations of string functions strstr, strcasestr and memmem.
241 Implemented by Maxim Kuvyrkov.
243 * The minimum Linux kernel version that this version of the GNU C Library
244 can be used with is 2.6.16.
246 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
247 powerpc POWER7. Implemented by Will Schmidt.
249 * New configure option --disable-nscd builds the C library such that it
250 never attempts to contact the Name Service Caching Daemon (nscd).
251 New configure option --disable-build-nscd avoids building nscd itself;
252 this is the default if --disable-nscd is used.
254 * Improved support for cross-compilation, including cross-testing and
255 bootstrap builds without a previously built glibc.
257 * Several testsuite tests are now able to test multiple IFUNC variants of an
258 interface, rather than just testing the one that would be chooen by
259 default.
261 * New configure options --with-bugurl and --with-pkgversion, for
262 distributors to use to embed their bug-reporting and package version
263 information in --help and --version output.
265 * The ttyname and ttyname_r functions on Linux now fall back to searching for
266 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
267 allows creation of chroots without the procfs mounted on /proc.
269 * The `crypt' function now fails if passed salt bytes that violate the
270 specification for those values. On Linux, the `crypt' function will
271 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
272 enabled, and fail on encrypted strings using the MD5 or DES algorithm
273 when the mode is enabled.
275 * The `clock_*' suite of functions (declared in <time.h>) is now available
276 directly in the main C library. Previously it was necessary to link with
277 -lrt to use these functions. This change has the effect that a
278 single-threaded program that uses a function such as `clock_gettime' (and
279 is not linked with -lrt) will no longer implicitly load the pthreads
280 library at runtime and so will not suffer the overheads associated with
281 multi-thread support in other code such as the C++ runtime library.
283 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
284 sat_IN, and szl_PL.
285 \f
286 Version 2.16
288 * The following bugs are resolved with this release:
290 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
291 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
292 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
293 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
294 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
295 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
296 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
297 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
298 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
299 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
300 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
301 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
302 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
303 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
304 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
305 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
306 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
307 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
308 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
309 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
310 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
311 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
312 14277, 14278.
314 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
315 configuring glibc with:
316 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
317 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
318 Implemented by H.J. Lu.
320 * ISO C11 support:
322 + define static_assert
324 + do not declare gets
326 + declare at_quick_exit and quick_exit also for ISO C11
328 + aligned_alloc. NB: The code is deliberately allows the size parameter
329 to not be a multiple of the alignment. This is a moronic requirement
330 in the standard but it is only a requirement on the caller, not the
331 implementation.
333 + timespec_get added
335 + uchar.h support added
337 + CMPLX, CMPLXF, CMPLXL added
339 Implemented by Ulrich Drepper.
341 * Support for the IA-64 has been moved to ports.
343 * Remove support for anything but ELF binary format
345 * Checking versions of poll, ppoll added.
346 Implemented by Ulrich Drepper.
348 * More generic and 64-bit performance optimizations to math functions.
349 Implemented by Ulrich Drepper.
351 * New configure option --enable-obsolete-rpc makes the deprecated RPC
352 headers and functions available at compile time as they were before
353 version 2.14. This option will be removed at some time in the future
354 after the TI-RPC library becomes fully sufficient for the needs of
355 existing applications.
357 * Compatibility code for Linux kernel versions before 2.4 has been removed.
358 Note that glibc is not expected to work with any Linux kernel version
359 before 2.6.
361 * New header <sys/auxv.h> and function getauxval allowing easy access to
362 the AT_* key-value pairs passed from the Linux kernel. The header also
363 defines the HWCAP_* bits associated with the AT_HWCAP key.
365 * New locales: mag_IN
367 * New configure option --enable-systemtap builds SystemTap static probes
368 into libc for setjmp and longjmp and into libpthread for various operations.
369 So far the setjmp/longjmp probes and some of the libpthread probes are
370 provided only for i*86 and x86_64.
371 Implemented by Roland McGrath and Rayson Ho.
373 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
375 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
376 and Will Schmidt.
378 * More optimized functions for SPARC. Implemented by David S. Miller.
380 * Improved support for cross-compilation, especially bootstrap builds
381 without a previously built glibc.
383 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
384 Chris Metcalf from Tilera.
386 * Support for the old ARM ABI has been removed from ports. Only the EABI is
387 now supported for ARM processors.
389 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
390 as the name of the dynamic linker, to distinguish it from the
391 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
393 * Support for CRIS has been removed from ports.
395 * A new class of installed header has been documented for low-level
396 platform-specific functionality. PowerPC added the first instance with a
397 function to provide time base register access. Contributed by Tulio
398 Magno Quites Machado Filho.
400 * ix86 configurations now install header files that are consistent with
401 what x86-64 configurations install. These same header files can be used
402 for -m32, -m64, or -mx32 builds.
403 Contributed by H.J. Lu.
405 * Math library bug fixes. A thorough audit of all open math library bugs was
406 conducted by Joseph Myers. Significant progress was made on many math
407 library bugs resulting in more accurate exceptions and function results.
408 Many thanks to all those that contributed including Andreas Jaeger for his
409 patch review and work on the x87 trigonometric instruction issues.
411 * Timezone data is no longer installed. Timezone-related binaries and scripts
412 will continue to be installed. Users should obtain their timezone data from
413 their distribution provider or from the tzdata package at
414 <ftp://munnari.oz.au/pub/>.
415 \f
416 Version 2.15
418 * The following bugs are resolved with this release:
420 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
421 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
422 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
423 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
424 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
425 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
426 13484, 13506, 13515, 13523, 13524, 13538, 13540
428 * New program pldd to list loaded object of a process
429 Implemented by Ulrich Drepper.
431 * Add nss_db support back to glibc. No more dependency on Berkeley db
432 and support for initgroups lookups.
433 Implemented by Ulrich Drepper.
435 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
436 Contributed by HJ Lu.
438 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
439 Contributed by HJ Lu.
441 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
442 on x86-32 and x86-64.
443 Contributed by Liubov Dmitrieva.
445 * Optimized strchr and strrchr for SSE on x86-32.
446 Contributed by Liubov Dmitrieva.
448 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
449 for x86-64 and x86-32.
450 Contributed by Liubov Dmitrieva.
452 * New interfaces: scandirat, scandirat64
453 Implemented by Ulrich Drepper.
455 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
456 Implemented by Ulrich Drepper.
458 * nscd now also caches the netgroup database.
459 Implemented by Ulrich Drepper.
461 * Integrate libm with gcc's -ffinite-math-only option.
462 Implemented by Ulrich Drepper.
464 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
465 to math functions. Implemented by Ulrich Drepper.
467 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
468 Implemented by Ulrich Drepper.
470 * New Linux interfaces: process_vm_readv, process_vm_writev
472 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
473 Implemented by Ulrich Drepper.
475 * Optimized nearbyint and strcasecmp for PPC.
476 Implemented by Adhemerval Zanella.
478 * New locales: bho_IN, unm_US, es_CU, ta_LK
479 \f
480 Version 2.14
482 * The following bugs are resolved with this release:
484 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
485 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
486 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
487 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
488 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
489 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
490 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
491 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
492 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
493 12795, 12811, 12813, 12814, 12841
495 * The RPC implementation in libc is obsoleted. Old programs keep working
496 but new programs cannot be linked with the routines in libc anymore.
497 Programs in need of RPC functionality must be linked against TI-RPC.
498 The TI-RPC implementation is IPv6 enabled and there are other benefits.
500 Visible changes of this change include (obviously) the inability to link
501 programs using RPC functions without referencing the TI-RPC library and the
502 removal of the RPC headers from the glibc headers.
503 Implemented by Ulrich Drepper.
505 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
506 syncfs, setns, sendmmsg
508 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
509 yue_HK, lij_IT, mhr_RU
511 * New encodings: CP770, CP771, CP772, CP773, CP774
513 * New program sotruss to trace calls through PLTs
514 Implemented by Ulrich Drepper.
516 * The malloc hook implementation is marked deprecated and will be removed
517 from the default implementation in the next version. The design never
518 worked ever since the introduction of threads. Even programs which do
519 not create threads themselves can use multiple threads created internally.
520 \f
521 Version 2.13
523 * The following bugs are resolved with this release:
525 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
526 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
527 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
528 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
529 12378, 12394, 12397
531 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
533 * POWER7 optimizations: memset, memcmp, strncmp
535 * New optimized string functions for x86-64: strnlen (SSE2),
536 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
537 Implemented by Ulrich Drepper.
538 \f
539 Version 2.12
541 * The following bugs are resolved with this release:
543 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
544 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
545 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
546 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
547 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
548 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
549 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
550 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
552 * New interfaces: pthread_getname_np, pthread_setname_np
554 * New Linux interface: recvmmsg
556 * STT_GNU_IFUNC implemented for Sparc by David Miller.
558 * The dynamic linker now recognizes supported ABI versions from the
559 EI_ABIVERSION field in the ELF header.
560 Implemented by Ulrich Drepper.
562 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
563 will not be used to fill in password fields in the passwd.byname replies.
564 Instead it is used to synthesize the shadow.byname table, should it be
565 missing. This is a useful mode in some installations involving Solaris.
566 Implemented by Ulrich Drepper.
568 * New locales: kok_IN, sq_MK, cv_RU
569 \f
570 Version 2.11
572 * The following bugs are resolved with this release:
574 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
575 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
576 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
577 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
578 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
579 10789, 10817, 10823, 10840, 10847
581 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
582 mkostemps64
583 Implemented by Ulrich Drepper.
585 * Checking version of longjmp added that fails if an uninitialized stack
586 frame would be created. Implemented by Ulrich Drepper.
588 * STT_GNU_IFUNC is now supported in static executables.
589 Implemented by H.J. Lu.
591 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
593 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
594 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
595 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
596 Contributed by H.J. Lu.
598 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
599 Implemented by Ulrich Drepper.
601 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
602 strstr, strcasestr.
603 Contributed by H.J. Lu.
605 * Support for fma instruction in AVX on x86-64.
606 Implemented by H.J. Lu and Ulrich Drepper.
608 * AVX support in x86-64 auditing support in ld.so.
609 Implemented by H.J. Lu.
611 * STB_GNU_UNIQUE support added.
612 Implemented by Ulrich Drepper.
614 * Implement second fallback mode for optimized DNS lookup for even more
615 broken environments. If two requests from the same port are not
616 handled correctly close the socket and open a new one before sending
617 the second request. The 'single-request-reopen' option in /etc/resolv.conf
618 can be used to select this mode right away, instead of rediscovering the
619 necessity is every process again.
620 Implemented by Ulrich Drepper.
622 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
623 Implemented by Adam Tkac.
625 * Optimized iconv conversions for S390x.
626 Implemented by Andreas Krebbel.
628 * Using condvars with PI mutexes is now more efficient due to kernel
629 support for requeueing to PI futexes. NPTL support added for x86-64.
630 Implemented by Ulrich Drepper.
632 * New locales: ps_AF, my_MM
633 \f
634 Version 2.10
636 * The following bugs are resolved with this release:
638 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
639 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
640 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
641 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
642 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
644 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
645 Implemented by Ulrich Drepper.
647 * New Linux interfaces: accept4, fallocate, fallocate64.
648 Implemented by Ulrich Drepper.
650 * Correct declarations of string function when used in C++ code. This
651 could lead to compile errors for invalid C++ code.
653 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
654 now in POSIX.
656 * New POSIX 2008 interface: psiginfo
657 Implemented by Ulrich Drepper.
659 * New ISO C++1x interfaces: quick_exit, at_quick_exit
660 Implemented by Ulrich Drepper.
662 * Support for selecting between multiple function definitions at runtime
663 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
665 * The libcrypt library can now use the hash function implementations in
666 NSS. Implemented by Ulrich Drepper.
668 * The malloc implementation can be compiled to be less memory efficient
669 but higher performing in multi-threaded programs.
670 Implemented by Ulrich Drepper.
672 * New locales: nan_TW@latin, ks_IN
674 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
675 Implemented by Ulrich Drepper.
677 * Extended printf hook support. It is possible to use user-defined types
678 and extend existing format specifiers.
679 Implemented by Ulrich Drepper.
681 * Handling for group shadow files has been added.
682 Implemented by Ulrich Drepper.
684 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
685 servers (the case, e.g., for some people using the built-in DNS
686 server in ADSL modems/routers). There is a once-per-process timeout
687 in case of a broken server. To avoid it, users can run nscd or put
688 'options single-request' in /etc/resolv.conf.
689 Implemented by Ulrich Drepper.
690 \f
691 Version 2.9
693 * The following bugs are resolved with this release:
695 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
696 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
697 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
698 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
699 6968, 6974, 6980, 6995, 7008, 7009, 7029
701 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
702 up at the same time. Implemented by Ulrich Drepper.
704 * TLS descriptors for LD and GD on x86 and x86-64.
705 Implemented by Alexandre Oliva.
707 * getaddrinfo now handles DCCP and UDPlite.
708 Implemented by Ulrich Drepper.
710 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
711 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
712 Implemented by Ulrich Drepper.
714 * New implementation of memmem, strstr, and strcasestr which is O(n).
715 Implemented by Eric Blake.
717 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
719 * Implement "e" option for popen to open file descriptor with the
720 close-on-exec flag set. Implemented by Ulrich Drepper.
722 * Implement "b" mode for fmemopen. In this mode writes writes don't
723 implicitly add a NUL byte and seeks from the end of the buffer really
724 use the buffer end, not the string length as the basis.
725 Implemented by Ulrich Drepper.
727 * Many functions, exported and internal, now atomically set the close-on-exec
728 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
730 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
731 Sinhala)
732 Implemented by Pravin Satpute.
734 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
735 \f
736 Version 2.8
738 * The following bugs are resolved with this release:
740 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
741 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
742 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
743 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
744 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
745 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
746 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
748 * New locales: bo_CN, bo_IN, shs_CA.
750 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
752 * Sorting rules for some Indian languages (Devanagari and Gujarati).
753 Implemented by Pravin Satpute.
755 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
757 * nscd caches now all timeouts for DNS entries
758 Implemented by Ulrich Drepper.
760 * nscd is more efficient and wakes up less often.
761 Implemented by Ulrich Drepper.
763 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
764 vdprintf, and obstack_vprintf.
765 Implemented by Jakub Jelinek.
767 * Faster memset for x86-64.
768 Implemented by Harsha Jagasia and H.J. Lu.
770 * Faster memcpy on x86.
771 Implemented by Ulrich Drepper.
773 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
774 Implemented by Ulrich Drepper.
776 * Faster sqrt and sqrtf implemention for some PPC variants.
777 Implemented by Steven Munroe.
778 \f
779 Version 2.7
781 * The following bugs are resolved with this release:
783 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
784 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
785 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
786 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
787 5071, 5103, 5104, 5112, 5113, 5184, 5186
789 * More checking functions: fread, fread_unlocked, open*, mq_open.
790 Implemented by Jakub Jelinek and Ulrich Drepper.
792 * Extend fortification to C++. Implemented by Jakub Jelinek.
794 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
795 by not recognizing 'a' as a modifier when those specs are requested.
796 Implemented by Jakub Jelinek.
798 * PPC optimizations to math and string functions.
799 Implemented by Steven Munroe.
801 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
802 options to be passed. Implemented by Ulrich Drepper.
804 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
806 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
807 Implemented by Ulrich Drepper.
809 * Handle private futexes in the NPTL implementation.
810 Implemented by Jakub Jelinek and Ulrich Drepper.
812 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
813 Implemented by Roland McGrath and Ulrich Drepper.
815 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
817 * SHA-256 and SHA-512 based password encryption.
818 Implemented by Ulrich Drepper.
820 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
821 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
822 yo_NG.
824 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
825 Implemented by Ulrich Drepper.
826 \f
827 Version 2.6
829 * The following bugs are resolved with this release:
831 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
832 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
833 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
834 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
835 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
836 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
837 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
838 4702, 4858
840 * New Linux interfaces: epoll_pwait, sched_getcpu.
842 * New generic interfaces: strerror_l.
844 * nscd can now cache the services database. Implemented by Ulrich Drepper.
845 \f
846 Version 2.5
848 * The following bugs are resolved with this release:
850 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
851 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
852 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
853 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
854 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
855 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
856 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
857 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
858 3225, 3251, 3252, 3253, 3273
860 * For Linux, the sorting of addresses returned by getaddrinfo now also
861 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
862 Implemented by Ulrich Drepper.
864 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
865 Implemented by Ulrich Drepper.
867 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
869 * New iconv module for MIK. Contributed by Alexander Shopov.
871 * For sites with broken group and/or passwd database, the auto-propagate
872 option of nscd can prevent creating ID lookup entries from the results
873 of a name lookup and vice versa. This usually is no problem but some
874 site might have problems with the default behavior.
875 Implemented by Ulrich Drepper.
877 * Iterating over entire database in NIS can be slow. With the
878 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
879 to trade time for memory. The entire database will be read at once.
880 Implemented by Ulrich Drepper.
882 * The interfaces introduced in RFC 3542 have been implemented by
883 Ulrich Drepper.
885 * Support for the new ELF hash table format was added by Ulrich Drepper.
887 * Support for priority inheritance mutexes added by Jakub Jelinek and
888 Ulrich Drepper.
890 * Support for priority protected mutexes added by Jakub Jelinek.
892 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
893 or_IN, csb_PL, fy_NL, sr_ME.
894 \f
895 Version 2.4
897 * More overflow detection functions.
899 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
900 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
902 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
903 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
904 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
905 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
906 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
907 by Masahide Washizawa.
909 * It is now possible to install audit libraries for the dynamic linker using
910 LD_AUDIT. Implemented by Ulrich Drepper.
912 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
913 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
914 For a libc and libpthread that works well on Linux 2.4 kernels, we
915 recommend using the stable 2.3 branch.
917 * The new function open_wmemstream acts like open_memstream,
918 but uses a wchar_t wide character buffer.
920 * The new function ppoll is an improved version of poll, similar to pselect.
922 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
923 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
924 renameat, unlinkat, linkat, symlinkat, readlinkat.
926 * New Linux kernel system calls: unshare,
927 inotify_init, inotify_add_watch, inotify_rm_watch.
929 * The euidaccess function is now also known by the alias eaccess,
930 for compatibility with some other systems.
932 * Timezone data updated to 2006b version.
933 \f
934 Version 2.3.6
936 * The following bugs are resolved with this release:
938 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
939 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
940 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
941 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
942 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
943 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
945 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
947 * As of this release, GCC 4 can be used to compile the C Library.
949 * Timezone data updated to 2005m version.
950 \f
951 Version 2.3.5
953 * The following bugs are resolved with this release:
955 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
956 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
957 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
958 777, 787, 821, 822, 823, 825
960 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
961 \f
962 Version 2.3.4
964 * Support for RFC 3678. Real implementations exist only for Linux so far.
965 Implemented by Ulrich Drepper.
967 * nscd can now cache entries persistently. Expiring entries are reloaded.
968 For speedups the cache can be shared in memory with client processes.
969 Implemented by Ulrich Drepper.
971 * nscd can now perform SELinux checks.
972 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
974 * getaddrinfo queries are now cached. Canonical name lookup is performed
975 efficiently.
976 Implemented by Ulrich Drepper.
978 * The nothrow function attribute is used when headers are used by gcc when
979 compiling C code. This can avoid significant amounts of exception
980 handling data.
982 * The malloc functions perform more error checking and are stricter when
983 it comes to reacting on errors. The default action is to terminate
984 the process after showing an error message. Implemented by Ulrich Drepper.
986 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
987 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
989 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
990 namespaces using the new function dlmopen(). This feature is of course,
991 like most other dynamic loading functionality, not available in statically
992 linked applications. Implemented by Ulrich Drepper.
994 * Low-overhead boundary checking variants of string and some stdio functions
995 were added. These are to be used in conjunction with a gcc patch by
996 Jakub Jelinek which adds calls to these functions if possible.
997 Implemented by Jakub Jelinek and Ulrich Drepper.
999 * Old code for several operating systems and machine architectures that
1000 have not been in working condition in a long time have been removed from
1001 the main source tree maintained by the GNU C Library's maintainers.
1002 These files are now reside in the separate `ports' source module
1003 that is usable as an add-on when building the library.
1004 \f
1005 Version 2.3.3
1007 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1008 interrogate the dynamic linker, compatible with the Solaris interface.
1010 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1011 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1013 * getifaddrs now uses the netlink interface on Linux to get its information.
1014 Implemented by Thorsten Kukuk.
1016 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1017 Implemented by Ulrich Drepper.
1019 * support for non-executable stacks on x86 has been added. Changes mostly
1020 by Roland McGrath.
1022 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1023 and Ulrich Drepper.
1025 * getaddrinfo now performs destination address selection according to
1026 RFC 3484.
1027 \f
1028 Version 2.3.2
1030 * Thread-safe interfaces for many functions that access locale data
1031 were added in version 2.3, but these features were omitted from NEWS.
1032 Many functions have variants with an `_l' suffix that take a `locale_t'
1033 object as a parameter rather than consulting the current locale.
1034 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1035 create and maintain `locale_t' objects. Additionally, the new function
1036 `uselocale' sets "the current locale" (as used by functions not so
1037 parameterized) set for an individual thread. These features were added
1038 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1040 * The functions getresuid, getresgid, setresuid, and setresgid, which
1041 have long been available on Linux, are now declared in <unistd.h>
1042 and are now also available on the Hurd.
1044 * ELF thread-local storage support (TLS) now works on x86-64.
1046 * The new dynamic string token $LIB is expanded in shared library names.
1047 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1049 * Aldy Hernandez contributed complete software floating point support for
1050 PowerPC machines with no FPU.
1052 * fexecve is implemented on Linux.
1054 * The `btowc' function should work at least twice as fast due to
1055 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1057 * With approriate thread add-ons cancelable functions are now implemented
1058 in libc.so as well. No need to call the function in libpthread. This
1059 change allowed to finally disable the incorrect and expensive handling
1060 of weak definition in ld.so.
1062 * Yet more PLT entries in libc.so have been removed. We finally arrived
1063 at the bare minimum. Startup times improved appropriately.
1065 * Support for the new Linux/x86 system call interface was added. The
1066 AT_SYSINFO auxiliary vector entry is recognized and handled.
1067 \f
1068 Version 2.3
1070 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1071 charsets.
1073 * iconv (the program and the interface) now accepts empty names (excluding
1074 options like //TRANSLIT) to mean "use charset of current locale".
1076 * localedef can now transliterate characters in strings which are not in
1077 the provided charmap. The information from the input locale is used.
1079 * Prelinking support was added for ELF targets. This requires additional
1080 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1082 * Read-only stdio streams now use mmap to speed up operation by eliminating
1083 copying and buffer underflows. To use add 'm' to the mode string of
1084 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1086 * The malloc functions were completely rewritten by Wolfram Gloger based
1087 on Doug Lea's malloc-2.7.0.c.
1089 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1090 implementation of regex.
1092 * Bruno Haible upgraded the iconv and locale implementation to support
1093 Unicode 3.2.
1095 * Contents of the LC_* and LANG environment variables in the CEN style are
1096 not recognized anymore. It never was used. Change by Ulrich Drepper.
1098 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1099 thread-local storage (TLS) ABI on some platforms.
1100 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1102 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1103 EUC-JISX0213, and TSCII.
1105 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1106 BSD-compatible interface for getting all network interface addresses.
1107 Implementation for IPv4 by Roland McGrath.
1109 * Loading of locale data is faster due to the introduction of a locale
1110 archive. Implemented by Roland McGrath and Ulrich Drepper.
1112 * Startup times are significantly reduced by not using exported functions
1113 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1114 and Ulrich Drepper.
1116 * Steven Munroe contributed a port to PowerPC64/Linux.
1117 \f
1118 Version 2.2.6
1120 * The Hurd now uses the GNU libio implementation of stdio rather than the
1121 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1123 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1124 with the same behavior as the Linux system call of the same name.
1125 \f
1126 Version 2.2.5
1128 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1129 128-bit long double format.
1131 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1132 IBM1161, and IBM1162 charsets.
1134 * Andreas Jaeger contributed a port to x86-64/Linux.
1136 * Peter Bruin contributed a port to PowerPC/Hurd.
1138 * libc functions using I/O streams now can handle wide-oriented streams
1139 as well.
1141 * optimizations in the dynamic linker. Binaries created by recent binutils
1142 versions start up quicker due to reduced time spent on relocations.
1144 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1145 \f
1146 Version 2.2.4
1148 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1149 asinh, atanh, j0 for the 128-bit long double format.
1151 * Bruno Haible updated all the code handling Unicode in some form to
1152 support Unicode 3.1.
1154 * Speed of regex for single-byte locales is back to previous levels.
1155 Patch by Isamu Hasegawa.
1157 * Alpha, SPARC, and IA-64 now also using floating stacks.
1159 * Startup time of internationalized applications greatly improved through
1160 iconv cache. Use iconvconfig to generate the cache file.
1161 Contributed by Ulrich Drepper.
1163 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1164 severe performance problems. Patch by David Mosberger.
1166 * The Hurd port got a lot more functionality like AIO, various stdio
1167 extensions, etc. Mainly done by Roland McGrath.
1169 * mtrace can now lookup symbols in shared libraries.
1170 \f
1171 Version 2.2.3
1173 * Intel's IA-64 math library is largely integrated. It provides fast and
1174 accurate implementatations for most basic and standard math functions
1175 in float, double, and long double format.
1177 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1178 and asin for the 96-bit long double format and asin, log, tan for the
1179 128-bit long double format.
1181 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1182 The basic double functions exist today. Contributed by Abraham Ziv
1183 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1184 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1186 * An asynchronous name lookup library was added. The interface is designed
1187 after POSIX AIO. The proposal was circulated beforehand to get comments.
1188 No negative ones came in. Implemented by Ulrich Drepper.
1190 * Port to S390/64bit contributed by Martin Schwidefsky
1191 <schwidefsky@de.ibm.com>.
1193 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1194 of functions for Linux/IA-64.
1196 * The RPC code is now thread safe. Threads can now use the same service
1197 of different services at the same time. Patch by Eric Norum
1198 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1200 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1201 family of functions for Linux/S390.
1203 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1204 of functions for Linux/x86.
1206 * Port to Linux/CRIS contributed by Axis Communications.
1207 \f
1208 Version 2.2.2
1210 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1211 we can now check for namespace violations and missing declarations. The
1212 result is that almost all headers are now Unix-compliant (as defined in
1213 the upcoming XPG6). The negative side is that some programs might need
1214 corrections, too, if they depend on the incorrect form of the headers in
1215 previous versions which defined too many symbols and included too many
1216 other headers.
1218 * regex now handles multibyte character sets correctly.
1219 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1221 * iconv (the program) does now conform to the upcoming XPG6 and handles
1222 charmaps. Instead of the charset names the path of charmaps can be
1223 provided and the conversion happens based on this data.
1224 Contributed by Ulrich Drepper.
1226 * The locale program now provides detailed information about the installed
1227 locales. While
1229 locale -a
1231 only lists the names of the supported locales
1233 locale -a --verbose
1235 provides details such as country, language, and codeset name.
1236 Contributed by Ulrich Drepper.
1237 \f
1238 Version 2.2.1
1240 * The gencat program now parses the input file according to the charset
1241 selected by the LC_CTYPE category. This is important for stateful
1242 character sets. To make generating catalogs easier there is a way
1243 to overwrite the charset selected by the locale: before the first
1244 message or $ quote line the catalog can contain a line like
1246 $ codeset=ISO-8859-2
1248 to select the charset (ISO-8859-2 in this case).
1250 Implemented by Shinya Hanataka and Ulrich Drepper.
1252 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1253 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1254 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1256 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1257 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1259 * The LANGUAGE environment variable is now ignored unless the locale is
1260 changed from the default "C" locale.
1262 * The usual bug fixes.
1263 \f
1264 Version 2.2
1266 * Greg McGary added runtime support for bounds checking using gcc's
1267 new -fbounded-pointers option. ix86 target is complete. PowerPC
1268 is in progress.
1270 * Thorsten Kukuk added secure mode support to nscd.
1272 * The Berkeley db libraries have been removed.
1274 Related, the nss_db module is now in a separate package since it
1275 obviously requires a database library being available.
1277 * Wide character I/O streams implemented by Ulrich Drepper.
1279 * Functions from the extended socket API added by Ulrich Drepper.
1281 * Functions feenableexcept and fedisableexcept to control the
1282 behaviour of individual exceptions have been added by Andreas Jaeger.
1284 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1286 * The resolver code has been updated from bind 8.2.3-T5B which supports
1287 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1288 and Mark Kettenis.
1290 This change could in some situations effect backward compatibility. Since
1291 now `_res' is a thread-local instead of a global variable, modifying it
1292 in one thread does not have any effect in other threads.
1294 The resolver library was also extended to allow IPv6 as the transport
1295 protocol for the requests. This work was done by Stig Venaas.
1297 * Compatibility code for K&R C compilers has been removed from the
1298 header files. A ISO C compiler is needed to use the library
1299 (conforming to either C89 or C99 standard).
1301 * Complete rewrite of the localedef program to support multibyte character
1302 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1303 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1304 Implemented by Ulrich Drepper.
1306 Bruno Haible significantly improved the generation and use of the data
1307 structures for the wide character tables.
1309 * Plural handling in gettext implemented by Ulrich Drepper.
1311 * The utmp daemon has been removed.
1313 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1315 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1316 and Yutaka Niibe.
1318 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1320 * POSIX barriers implemented by Kaz Kylheku.
1322 * POSIX spawn function family implemented by Ulrich Drepper.
1324 * POSIX spinlocks are now available.
1326 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1328 * the configure option --enable-kernel=X.Y.Z allows to strip out
1329 compatibility for kernel versions before X.Y.Z. This is currently only
1330 implemented for Linux.
1332 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1333 field sin6_scope_id. This means that all programs using IPv6 should be
1334 recompiled. Don't expect binary compatibility with previous glibc
1335 versions.
1337 * various conversion modules for IBM character sets contributed by
1338 Masahide Washizawa.
1340 * IA-64 port by Jes Sorensen and HJ Lu.
1341 \f
1342 Version 2.1.3
1344 * bug fixes
1346 \f
1347 Version 2.1.2
1349 * bug fixes
1351 \f
1352 Version 2.1.1
1354 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1356 * New xdr functions are added; some rpc functions are now 64bit clean.
1358 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1360 * Fixed known incompatibilities with glibc 2.0.
1362 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1364 * Optimized a number of functions (especially the ELF dynamic loader).
1366 * Update timezone data files.
1368 * lots of charmaps corrections
1370 * some new locale definitions and charmaps
1372 \f
1373 Version 2.1
1375 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1376 conform to POSIX member type requirements. Symbol versions have been
1377 adjusted as needed within the library, and for direct use by applications,
1378 but there is potential for problems if third-party libraries use
1379 struct timeval as part of their interface. This does not present
1380 a problem for X and other "essential" system libraries.
1382 * An additional locale model to support C++ Standard Library locale
1383 model and probably more was implemented by Ulrich Drepper.
1385 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1386 symbol level.
1388 * Miles Bader provided the `argp' function family to support hierachical
1389 command line argument parsing, layered on top of getopt.
1391 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1393 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1394 numbers.
1396 * scanf recognizes the %a and %A format for scanning floating point numbers.
1398 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1399 information and interfaces for the available integer types.
1401 * about 130 new math functions were added to implement the ISO C9x math
1402 library.
1404 * the new header <complex.h> contains definitions of the complex math
1405 functions from ISO C 9X.
1407 * the new header <tgmath.h> defines generic macros to use complex or
1408 real valued functions.
1410 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1412 * Andreas Jaeger provided a test suite for the math library.
1414 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1416 * Ulrich Drepper added character set conversion functions (iconv).
1418 * Optimized string functions have been added.
1420 * The localedata addon is now part of glibc.
1422 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1424 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1425 daemon for NSS (nscd).
1427 Missing a better place here are some numbers on improvements. Under
1428 Linux 2.1.125 un-tar-ing the kernel sources takes
1430 user system wall
1432 using local files 12.19s 6.88s 22.91s
1434 using NIS 13.92s 8.91s 26.34s
1436 using NIS & nscd 10.37s 7.34s 25.30s
1438 using NIS+ 27.57s 30.37s 640.46s
1440 using NIS+ & nscd 10.25s 7.83s 26.51s
1442 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1444 Keep in mind that non-namelookup related operations dominate above times.
1445 It was just a common complain that using NIS+ unpacking the kernel is
1446 horribly slow.
1448 [1] The old nscd implementation is not available anymore since it was
1449 distributed with glibc up to version 2.0.98 and thus is now replaced.
1451 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1453 * Mark Kettenis provided a Hesiod NSS module.
1455 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1456 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1458 * rcmd can now handle netgroups (Dick Streefland).
1460 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1461 Bambrough.
1463 * Support for the IPv6 protocol has been added to the socket API, as per the
1464 latest draft standards.
1466 * Support for Linux 2.2 has been added.
1468 * Interface changes relative to the latest 2.0.x release:
1469 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1470 addseverity NEW: Unix98
1471 alphasort64 NEW: LFS
1472 argp_err_exit_status NEW: argp, GNU ext
1473 argp_error NEW: argp, GNU ext
1474 argp_failure NEW: argp, GNU ext
1475 argp_help NEW: argp, GNU ext
1476 argp_parse NEW: argp, GNU ext
1477 argp_program_bug_address NEW: argp, GNU ext
1478 argp_program_version NEW: argp, GNU ext
1479 argp_program_version_hook NEW: argp, GNU ext
1480 argp_state_help NEW: argp, GNU ext
1481 argp_usage NEW: argp, GNU ext
1482 authdes_create NEW: Secure RPC
1483 authdes_getucred NEW: Secure RPC
1484 authdes_pk_create NEW: Secure RPC
1485 backtrace NEW: GNU ext.
1486 backtrace_symbols NEW: GNU ext.
1487 backtrace_symbols_fd NEW: GNU ext.
1488 cacos NEW: ISO C 9x
1489 cacosf NEW: ISO C 9x
1490 cacosh NEW: ISO C 9x
1491 cacoshf NEW: ISO C 9x
1492 cacoshl NEW: ISO C 9x
1493 cacosl NEW: ISO C 9x
1494 capget NEW: kernel
1495 capset NEW: kernel
1496 carg NEW: ISO C 9x
1497 cargf NEW: ISO C 9x
1498 cargl NEW: ISO C 9x
1499 casin NEW: ISO C 9x
1500 casinf NEW: ISO C 9x
1501 casinh NEW: ISO C 9x
1502 casinhf NEW: ISO C 9x
1503 casinhl NEW: ISO C 9x
1504 casinl NEW: ISO C 9x
1505 catan NEW: ISO C 9x
1506 catanf NEW: ISO C 9x
1507 catanh NEW: ISO C 9x
1508 catanhf NEW: ISO C 9x
1509 catanhl NEW: ISO C 9x
1510 catanl NEW: ISO C 9x
1511 cbc_crypt NEW: Secure RPC
1512 ccos NEW: ISO C 9x
1513 ccosf NEW: ISO C 9x
1514 ccosh NEW: ISO C 9x
1515 ccoshf NEW: ISO C 9x
1516 ccoshl NEW: ISO C 9x
1517 ccosl NEW: ISO C 9x
1518 cexp NEW: ISO C 9x
1519 cexpf NEW: ISO C 9x
1520 cexpl NEW: ISO C 9x
1521 cimag NEW: ISO C 9x
1522 cimagf NEW: ISO C 9x
1523 cimagl NEW: ISO C 9x
1524 clearerr_locked REMOVED
1525 clntunix_create NEW: sunrpc ext
1526 clog NEW: ISO C 9x
1527 clog10 NEW: ISO C 9x
1528 clog10f NEW: ISO C 9x
1529 clog10l NEW: ISO C 9x
1530 clogf NEW: ISO C 9x
1531 clogl NEW: ISO C 9x
1532 conj NEW: ISO C 9x
1533 conjf NEW: ISO C 9x
1534 conjl NEW: ISO C 9x
1535 cpow NEW: ISO C 9x
1536 cpowf NEW: ISO C 9x
1537 cpowl NEW: ISO C 9x
1538 cproj NEW: ISO C 9x
1539 cprojf NEW: ISO C 9x
1540 cprojl NEW: ISO C 9x
1541 creal NEW: ISO C 9x
1542 crealf NEW: ISO C 9x
1543 creall NEW: ISO C 9x
1544 creat64 NEW: LFS
1545 csin NEW: ISO C 9x
1546 csinf NEW: ISO C 9x
1547 csinh NEW: ISO C 9x
1548 csinhf NEW: ISO C 9x
1549 csinhl NEW: ISO C 9x
1550 csinl NEW: ISO C 9x
1551 csqrt NEW: ISO C 9x
1552 csqrtf NEW: ISO C 9x
1553 csqrtl NEW: ISO C 9x
1554 ctan NEW: ISO C 9x
1555 ctanf NEW: ISO C 9x
1556 ctanh NEW: ISO C 9x
1557 ctanhf NEW: ISO C 9x
1558 ctanhl NEW: ISO C 9x
1559 ctanl NEW: ISO C 9x
1560 des_setparity NEW: Secure RPC
1561 ecb_crypt NEW: Secure RPC
1562 endutxent NEW: Unix98
1563 exp10 NEW: ISO C 9x
1564 exp10f NEW: ISO C 9x
1565 exp10l NEW: ISO C 9x
1566 exp2 NEW: ISO C 9x
1567 exp2f NEW: ISO C 9x
1568 exp2l NEW: ISO C 9x
1569 fattach NEW: STREAMS
1570 fdetach NEW: STREAMS
1571 fdim NEW: ISO C 9x
1572 fdimf NEW: ISO C 9x
1573 fdiml NEW: ISO C 9x
1574 feclearexcept NEW: ISO C 9x
1575 fegetenv NEW: ISO C 9x
1576 fegetexceptflag NEW: ISO C 9x
1577 fegetround NEW: ISO C 9x
1578 feholdexcept NEW: ISO C 9x
1579 feof_locked REMOVED
1580 feraiseexcept NEW: ISO C 9x
1581 ferror_locked REMOVED
1582 fesetenv NEW: ISO C 9x
1583 fesetexceptflag NEW: ISO C 9x
1584 fesetround NEW: ISO C 9x
1585 fetestexcept NEW: ISO C 9x
1586 feupdateenv NEW: ISO C 9x
1587 fflush_locked REMOVED
1588 ffsl NEW: GNU ext.
1589 ffsll NEW: GNU ext.
1590 fgetpos64 NEW: LFS
1591 fgets_unlocked NEW: GNU ext.
1592 fileno_locked REMOVED
1593 fma NEW: ISO C 9x
1594 fmaf NEW: ISO C 9x
1595 fmal NEW: ISO C 9x
1596 fmax NEW: ISO C 9x
1597 fmaxf NEW: ISO C 9x
1598 fmaxl NEW: ISO C 9x
1599 fmin NEW: ISO C 9x
1600 fminf NEW: ISO C 9x
1601 fminl NEW: ISO C 9x
1602 fmtmsg NEW: Unix98
1603 fopen64 NEW: LFS
1604 fputc_locked REMOVED
1605 fputs_unlocked NEW: GNU ext.
1606 fread_unlocked NEW: GNU ext.
1607 freopen64 NEW: LFS
1608 fseeko NEW: Unix98
1609 fsetpos64 NEW: LFS
1610 fstatfs64 NEW: LFS
1611 fstatvfs NEW: Unix98
1612 fstatvfs64 NEW: LFS
1613 ftello NEW: Unix98
1614 ftello64 NEW: LFS
1615 ftruncate64 NEW: LFS
1616 ftw64 NEW: LFS
1617 fwrite_unlocked NEW: GNU ext.
1618 gai_strerror NEW: IPv6
1619 gamma_r REMOVED
1620 gammaf_r REMOVED
1621 gammal_r REMOVED
1622 getchar_locked REMOVED
1623 getdate NEW: Unix98
1624 getdate_err NEW: Unix98
1625 getdate_r NEW: GNU ext.
1626 getmsg NEW: STREAMS
1627 getnameinfo NEW: IPv6
1628 getnetname NEW: Secure RPC
1629 getpmsg NEW: STREAMS
1630 getpt NEW: Unix98 PTY
1631 getrlimit64 NEW: LFS
1632 getutxent NEW: Unix98
1633 getutxid NEW: Unix98
1634 getutxline NEW: Unix98
1635 glob64 NEW: GNU ext.
1636 globfree64 NEW: GNU ext.
1637 gnu_get_libc_release NEW: GNU ext.
1638 gnu_get_libc_version NEW: GNU ext.
1639 grantpt NEW: Unix98 PTY
1640 host2netname NEW: Secure RPC
1641 iconv NEW: iconv
1642 iconv_close NEW: iconv
1643 iconv_open NEW: iconv
1644 if_freenameindex NEW: IPv6
1645 if_indextoname NEW: IPv6
1646 if_nameindex NEW: IPv6
1647 if_nametoindex NEW: IPv6
1648 in6addr_any NEW: IPv6
1649 in6addr_loopback NEW: IPv6
1650 inet6_isipv4mapped NEW: IPv6
1651 isastream NEW: STREAMS
1652 iswblank NEW: GNU ext.
1653 key_decryptsession NEW: Secure RPC
1654 key_decryptsession_pk NEW: Secure RPC
1655 key_encryptsession NEW: Secure RPC
1656 key_encryptsession_pk NEW: Secure RPC
1657 key_gendes NEW: Secure RPC
1658 key_get_conv NEW: Secure RPC
1659 key_secretkey_is_set NEW: Secure RPC
1660 key_setnet NEW: Secure RPC
1661 key_setsecret NEW: Secure RPC
1662 llrint NEW: ISO C 9x
1663 llrintf NEW: ISO C 9x
1664 llrintl NEW: ISO C 9x
1665 llround NEW: ISO C 9x
1666 llroundf NEW: ISO C 9x
1667 llroundl NEW: ISO C 9x
1668 log2 NEW: ISO C 9x
1669 log2f NEW: ISO C 9x
1670 log2l NEW: ISO C 9x
1671 lrint NEW: ISO C 9x
1672 lrintf NEW: ISO C 9x
1673 lrintl NEW: ISO C 9x
1674 lround NEW: ISO C 9x
1675 lroundf NEW: ISO C 9x
1676 lroundl NEW: ISO C 9x
1677 lseek64 NEW: LFS
1678 makecontext NEW: Unix98
1679 mempcpy NEW: GNU ext.
1680 mmap64 NEW: LFS
1681 moncontrol REMOVED
1682 modify_ldt NEW: kernel
1683 nan NEW: ISO C 9x
1684 nanf NEW: ISO C 9x
1685 nanl NEW: ISO C 9x
1686 nearbyint NEW: ISO C 9x
1687 nearbyintf NEW: ISO C 9x
1688 nearbyintl NEW: ISO C 9x
1689 netname2host NEW: Secure RPC
1690 netname2user NEW: Secure RPC
1691 nexttoward NEW: ISO C 9x
1692 nexttowardf NEW: ISO C 9x
1693 nexttowardl NEW: ISO C 9x
1694 nftw NEW: Unix98
1695 nftw64 NEW: LFS
1696 open64 NEW: LFS
1697 passwd2des NEW: Secure RPC
1698 pow10 NEW: GNU ext.
1699 pow10f NEW: GNU ext.
1700 pow10l NEW: GNU ext.
1701 pread NEW: Unix98
1702 pread64 NEW: LFS
1703 printf_size NEW: GNU ext.
1704 printf_size_info NEW: GNU ext.
1705 profil_counter REMOVED
1706 pthread_mutexattr_getkind_np REPLACED
1707 pthread_mutexattr_setkind_np REPLACED
1708 ptsname NEW: Unix98 PTY
1709 ptsname_r NEW: Unix98 PTY
1710 putc_locked REMOVED
1711 putchar_locked REMOVED
1712 putgrent NEW: GNU ext.
1713 putmsg NEW: STREAMS
1714 putpmsg NEW: STREAMS
1715 pututxline NEW: Unix98
1716 pwrite NEW: Unix98
1717 pwrite64 NEW: LFS
1718 readdir64 NEW: LFS
1719 readdir64_r NEW: LFS
1720 remquo NEW: ISO C 9x
1721 remquof NEW: ISO C 9x
1722 remquol NEW: ISO C 9x
1723 round NEW: ISO C 9x
1724 roundf NEW: ISO C 9x
1725 roundl NEW: ISO C 9x
1726 rtime NEW: GNU ext.
1727 scalbln NEW: ISO C 9x
1728 scalblnf NEW: ISO C 9x
1729 scalblnl NEW: ISO C 9x
1730 scandir64 NEW: LFS
1731 sendfile NEW: kernel
1732 setcontext NEW: Unix98
1733 setrlimit64 NEW: LFS
1734 setutxent NEW: Unix98
1735 sighold NEW: Unix98
1736 sigignore NEW: Unix98
1737 sigqueue NEW: POSIX.1b
1738 sigrelse NEW: Unix98
1739 sigset NEW: POSIX.1b
1740 sigtimedwait NEW: POSIX.1b
1741 sigwaitinfo NEW: POSIX.1b
1742 sincos NEW: GNU ext.
1743 sincosf NEW: GNU ext.
1744 sincosl NEW: GNU ext.
1745 statfs64 NEW: LFS
1746 statvfs NEW: Unix98
1747 statvfs64 NEW: LFS
1748 strcasestr NEW: GNU ext.
1749 strtoimax NEW: ISO C 9x
1750 strtoumax NEW: ISO C 9x
1751 strverscmp NEW: GNU ext.
1752 svcauthdes_stats NEW: Secure RPC
1753 svcunix_create NEW: sunrpc etx
1754 svcunixfd_create NEW: sunrpc ext
1755 swapcontext NEW: Unix98
1756 tcgetsid NEW: Unix98 PTY
1757 tdestroy NEW: GNU ext.
1758 tgamma NEW: ISO C 9x
1759 tgammaf NEW: ISO C 9x
1760 tgammal NEW: ISO C 9x
1761 tmpfile64 NEW: LFS
1762 trunc NEW: ISO C 9x
1763 truncate64 NEW: LFS
1764 truncf NEW: ISO C 9x
1765 truncl NEW: ISO C 9x
1766 umount2 NEW: kernel
1767 unlockpt NEW: Unix98 PTY
1768 updwtmpx NEW: Unix98
1769 user2netname NEW: Secure RPC
1770 utmpxname NEW: Unix98
1771 versionsort NEW: GNU ext.
1772 versionsort64 NEW: GNU ext.
1773 waitid NEW: Unix98
1774 wcscasecmp NEW: GNU ext.
1775 wcsncasecmp NEW: GNU ext.
1776 wcsnlen NEW: GNU ext.
1777 wcstoimax NEW: ISO C 9x
1778 wcstoll NEW: ISO C 9x
1779 wcstoull NEW: ISO C 9x
1780 wcstoumax NEW: ISO C 9x
1781 wcswcs NEW: Unix98
1782 wordexp NEW: POSIX.2
1783 wordfree NEW: POSIX.2
1784 write_profiling REMOVED
1785 xdecrypt NEW: Secure RPC
1786 xdr_authdes_cred NEW: Secure RPC
1787 xdr_authdes_verf NEW: Secure RPC
1788 xdr_cryptkeyarg NEW: Secure RPC
1789 xdr_cryptkeyarg2 NEW: Secure RPC
1790 xdr_cryptkeyres NEW: Secure RPC
1791 xdr_getcredres NEW: Secure RPC
1792 xdr_key_netstarg NEW: Secure RPC
1793 xdr_key_netstres NEW: Secure RPC
1794 xdr_keybuf NEW: Secure RPC
1795 xdr_keystatus NEW: Secure RPC
1796 xdr_netnamestr NEW: Secure RPC
1797 xdr_sizeof NEW: Secure RPC
1798 xdr_unixcred NEW: sunrpc ext
1799 xencrypt NEW: Secure RPC
1800 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1801 \f
1802 Version 2.0.6
1804 * more bug fixes
1806 \f
1807 Version 2.0.5
1809 * more bug fixes
1811 * inet_ntoa is thread-safe
1813 * updwtmp is moved from libutil to libc
1815 * rewrite of cbrt function
1817 * update of timezone data
1818 \f
1819 Version 2.0.4
1821 * more bug fixes
1822 \f
1823 Version 2.0.3
1825 * more bug fixes
1826 \f
1827 Version 2.0.2
1829 * more bug fixes
1831 * add atoll function
1833 * fix complex problems in Berkeley DB code
1835 * fix math functions
1836 \f
1837 Version 2.0.1
1839 * fixed lots of header problems (especially Linux/GNU specific)
1841 * dynamic loader preserves all registers
1843 * Roland McGrath provided support for handling of auxiliary objects in
1844 the ELF dynamic loader.
1846 * support for parallel builds is improved
1847 \f
1848 Version 2.0
1850 * GNU extensions are no longer declared by default. To enable them you
1851 must define the macro `_GNU_SOURCE' in your program or compile with
1852 `-D_GNU_SOURCE'.
1854 * The library has changed from using GNU ld symbol aliases to using weak
1855 symbols where available. The ELF object file format supports weak
1856 symbols; GNU ld also supports weak symbols in the a.out format. (There
1857 is also now support for other GNU ld extensions in ELF. Use the
1858 `--with-elf' option to configure to indicate you have ELF, and
1859 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1860 of many files which contained only symbol aliases, reducing the size of
1861 the source and the compiled library; many other files were renamed to
1862 less cryptic names previously occupied by the symbol alias files.
1863 There is a new header file <elf.h> for programs which operate on
1864 files in the ELF format.
1866 * Converted to Autoconf version 2, so `configure' has more options.
1867 Run `configure --help' to see the details.
1869 * The library can now be configured to build profiling, highly-optimized
1870 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1871 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1872 `configure' enable building these extra libraries. The shared library is
1873 built by default when using both ELF and GNU ld. When shared libraries
1874 are enabled, the new library `-ldl' is available for arbitrary run-time
1875 loading of shared objects; its interface is defined in <dlfcn.h>. The
1876 new header file <link.h> gives access to the internals of the run-time
1877 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1878 application of same name on other systems and it provides information
1879 about dynamically linked binaries.
1881 * The C library now provides the run-time support code for profiling
1882 executables compiled with `-pg'. Programs can control the profiling code
1883 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1884 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1885 the support for this file format was contributed by David Mosberger-Tang.
1887 * The math code has been replaced with a math library based on fdlibm from
1888 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1889 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1890 functions. The math functions now reside in a separate library, so
1891 programs using them will need to use `-lm' their linking commands.
1893 * John C. Bowman contributed optimized ix87 assembler inline functions.
1895 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1896 mechanism similar to that found in Solaris 2. This is now used for the
1897 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1898 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1899 file controls what services are used for each individual database. This
1900 works by loading shared libraries with names specified in `nsswitch.conf',
1901 so service modules can be changed or added at any time without even
1902 relinking any program. Currently there are the file, db, and NIS based
1903 NSS services available.
1905 * The new functions `strtoq' and `strtouq' parse integer values from
1906 strings, like `strtol' and `strtoul', but they return `long long int' and
1907 `unsigned long long int' values, respectively (64-bit quantities).
1909 * The new functions `strtof' and `strtold' parse floating-point values from
1910 strings, like `strtod', but they return `float' and `long double' values,
1911 respectively (on some machines `double' and `long double' are the same).
1913 * Ulrich Drepper has contributed new implementations of the floating-point
1914 printing and reading code used in the `printf' family of functions and
1915 `strtod', `strtof', and `strtold'. These new functions are perfectly
1916 accurate, and much faster than the old ones.
1918 * The implementation of the POSIX locale model was completely rewritten by
1919 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1920 to compile the POSIX locale definition.
1922 * The former dummy implementations of the strcoll and strxfrm function are
1923 now replaced by fully functional code contributed by Ulrich Drepper. The
1924 collation information comes from the POSIX locale definitions.
1926 * The new header <langinfo.h> defines an interface for accessing
1927 various locale-dependent data (using the locale chosen with `setlocale').
1929 * Ulrich Drepper has contributed a new suite of functions for operation on
1930 wide-character and multibyte-character strings, in <wchar.h>;
1931 and classification and case conversion of wide characters, in <wctype.h>.
1932 These new functions are conforming to the ISO C, Amendement 1 specification.
1934 * There is now a second implementation of the standard I/O library available.
1935 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1936 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1938 * You can now use positional parameter specifications in format strings
1939 for the `printf' and `scanf' families of functions. For example,
1940 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1941 ``Number 6, Mr Jones''. This is mainly useful when providing different
1942 format strings for different languages, whose grammars may dictate
1943 different orderings of the values being printed. To support this
1944 feature, the interface for `register_printf_handler' has changed; see
1945 the header file <printf.h> for details.
1947 * The `printf' and `scanf' families of functions now understand a new
1948 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1949 to group numbers as indicated by the locale; for `scanf' and friends, this
1950 says to accept as valid only a number with all the proper grouping
1951 separators in the right places. In the default "C" locale, numbers are
1952 not grouped; but locales for specific countries will define the usual
1953 conventions (i.e. separate thousands with `,' in the US locale).
1955 * The pgrp functions have been regularized, slightly incompatibly but much
1956 less confusingly. The core functions are now `getpgid' and `setpgid',
1957 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1958 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1959 provided for compatibility. There is no longer an incompatible `getpgrp'
1960 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1962 * The new header file <fts.h> and suite of functions simplify programs that
1963 operate on directory trees. This code comes from 4.4 BSD.
1965 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1966 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1967 NSS scheme used in glibc.
1969 * There is a new malloc debugging hook `__memalign_hook'.
1971 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1972 `unsigned int' in <sys/types.h>. These are for compatibility only and
1973 their use is discouraged.
1975 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1976 done differently, so that it works even without GNU ld.
1978 * New function `euidaccess' checks allowed access to a file like `access',
1979 but using the effective IDs instead of the real IDs.
1981 * The time zone data files have been updated for the latest and greatest
1982 local time conventions of the countries of the world.
1984 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1985 see <dirent.h>.
1987 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1988 for formatting floating-point numbers. They are provided only for
1989 compatibility; new programs should use `sprintf' instead. There are
1990 also equivalent function for the `long double' floating-point type and
1991 all functions also exist in a reentrant form.
1993 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1994 functions for maintaining the login-record files (primarily of use to
1995 system programs such as `login'), and convenient functions for
1996 allocating and initializing a pseudo-terminal (pty) device.
1998 * Ulrich Drepper has contributed new support for System V style
1999 shared memory and IPC on systems that support it.
2001 * Ulrich Drepper has contributed several miscellaneous new functions found
2002 in System V: The `hsearch' family of functions provide an effective
2003 implementation of hash tables; `a64l' and `l64a' provide a very simple
2004 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2005 number generator.
2007 * Ulrich Drepper has contributed new reentrant counterparts for the
2008 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2010 * Ulrich Drepper has contributed new, highly-optimized versions of several
2011 string functions for the i486/Pentium family of processors.
2013 * Ulrich Drepper has updated the Linux-specific code, based largely
2014 on work done in Hongjiu Lu's version of GNU libc for Linux.
2015 The GNU library now supports Linux versions 2.0.10 and later,
2016 using the ELF object file format (i[3456]86-*-linux).
2018 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2020 * David Mosberger-Tang and Richard Henderson have ported the C library
2021 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2022 dynamic linking support for ELF/Alpha.
2024 * Richard Henderson contributed several Alpha optimized assembler function
2025 for arithmetic and string handling.
2027 * Ulrich Drepper has contributed a new set of message catalog functions to
2028 support multiple languages using the <libintl.h> interface, for use with
2029 his new package GNU gettext. Translation volunteers have contributed
2030 catalogs of the library's messages in Spanish, German, and Korean.
2032 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2033 program and the `catgets' function for reading the catalog files it
2034 creates. (The <libintl.h> interface is preferred; we include the
2035 <nl_types.h> interface using `catgets' only for source compatibility with
2036 programs already written to use it.)
2038 * New header file <values.h> gives SVID-compatible names for <limits.h>
2039 constants.
2041 * Various new macros, declarations, and small header files for compatibility
2042 with 4.4 BSD.
2044 * New function `group_member' is a convenient way to check if a process has
2045 a given effective group ID.
2047 * When using GCC 2.7 and later, the socket functions are now declared in a
2048 special way so that passing an argument of type `struct sockaddr_in *',
2049 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2050 `struct sockaddr *' type, does not generate a type-clash warning.
2052 * New function `error' declared in header file <error.h> is a convenient
2053 function for printing error messages and optionally exiting; this is the
2054 canonical function used in GNU programs. The new functions `err', `warn',
2055 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2056 doing the same thing.
2058 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2059 POSIX.2 `glob' function to do ~ and {...} expansion.
2061 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2062 `clearenv' which is used in POSIX.9 is also available.
2064 * New function `getsid' returns session ID number on systems that support it.
2066 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2067 files <db.h> and <mpool.h> provide a rich set of functions for several
2068 types of simple databases stored in memory and in files, and <ndbm.h> is
2069 an old `ndbm'-compatible interface using the `db' functions. Link with
2070 `-ldb' to get these functions.
2072 * New macro `strdupa' copies a string like `strdup', but uses local stack
2073 space from `alloca' instead of dynamic heap space from `malloc'.
2075 * New function `strnlen' is like `strlen' but searches only a given maximum
2076 number of characters for the null terminator. `stpncpy', `strndup' and
2077 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2078 function.
2080 * New function `statfs' in header <sys/statfs.h>.
2082 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2083 provide convenient functions for operating on blocks of null-terminated
2084 strings.
2086 * A new suite of functions in <utmp.h> handle all the details of reading
2087 and writing the utmp file.
2089 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2090 Thorsten Kukuk.
2092 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2093 completely POSIX compliant and also implemented the extended functionality
2094 to handle alternate digit representation and alternate era date formats.
2096 * Ulrich Drepper provided an implementation of the `strptime' function
2097 defined in XPG4.2 which transforms a string into a `struct tm' value.
2099 * Paul Eggert provided the tzselect shell script as part of the timezone
2100 code. The shell script makes it easy to select the correct timezone
2101 specification.
2103 * The implementation of the malloc family of functions is completely replaced
2104 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2105 The implementation uses the mmap function (if available) and it is
2106 optimized for the use in multi threaded programs.
2108 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2109 functions. This new functionality is usable by specifying a special
2110 salt string and it is compatible with implementation on *BSD systems.
2112 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2113 `getsubopt' to handle second level command line options, `bsd_signal'
2114 to access BSD style `signal' functionality, the obsolete `regexp' style
2115 expression matcher.
2117 * the `lchown' function is available on system which support this
2118 functionality.
2120 * The implementation of the shadow password handling function was contributed
2121 by Ulrich Drepper.
2123 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2125 * POSIX.1g support was added. The <sys/select.h> header is available,
2126 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2127 implementation of `getaddrinfo'.
2128 \f
2129 Version 1.09
2131 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2133 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2134 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2136 * The new function `daemon' from 4.4 BSD is useful for server programs that
2137 want to put themselves in the background.
2139 * Joel Sherrill has contributed support for several standalone boards that
2140 run without an operating system.
2142 * `printf', `scanf' and friends now accept a `q' type modifier for long
2143 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2145 * All of the code taken from BSD (notably most of the math and networking
2146 routines) has been updated from the BSD 4.4-Lite release.
2148 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2150 * The new functions `getdomainname' and `setdomainname' fetch or change the
2151 YP/NIS domain name. These are system calls which exist on systems which
2152 have YP (aka NIS).
2154 * The time zone data files have been updated for the latest international
2155 conventions.
2157 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2158 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2159 \f
2160 Version 1.08
2162 * The C library now includes support for Sun RPC, from Sun's free
2163 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2164 are included. (There is still no support for YP.)
2166 * Tom Quinn has contributed a port of the C library to SGI machines running
2167 Irix 4 (mips-sgi-irix4).
2169 * The new `lockf' function is a simplified interface to the locking
2170 facilities of `fcntl', included for compatibility.
2172 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2174 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2176 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2177 compatibility.
2179 * The error message printed by `assert' for a failed assertion now includes
2180 the name of the program (if using GNU ld) and the name of the calling
2181 function (with versions of GCC that support this).
2183 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2185 * The library now includes the <sys/mman.h> header file and memory
2186 management functions `mmap', `munmap', `mprotect', `msync', and
2187 `madvise', on systems that support those facilities.
2189 * The interface for `mcheck' has changed slightly: the function called to
2190 abort the program when an allocation inconsistency is detected now takes
2191 an argument that indicates the type of failure. The new function
2192 `mprobe' lets you request a consistency check for a particular block at
2193 any time (checks are normally done only when you call `free' or `realloc'
2194 on a block).
2196 * It is now possible to easily cross-compile the C library, building on one
2197 system a library to run on another machine and/or operating system. All
2198 you need to do is set the variable `HOST_CC' in `configparms' to the
2199 native compiler for programs to run on the machine you are building on (a
2200 few generator programs are used on Unix systems); set `CC' to the
2201 cross-compiler.
2203 * The new function `fexecve' (only implemented on the GNU system) executes
2204 a program file given a file descriptor already open on the file.
2205 \f
2206 Version 1.07
2208 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2209 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2211 * You can set the variable `libprefix' in `configparms' to specify a prefix
2212 to be prepended to installed library files; this makes it easy to install
2213 the GNU C library to be linked as `-lgnuc' or whatever.
2215 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2216 copies a limited number of characters from a string, and returns the
2217 address of the last character written.
2219 * You no longer need to check for whether the installed `stddef.h' is
2220 compatible with the GNU C library. configure now checks for you.
2222 * You can now define a per-stream `fileno' function to convert the
2223 stream's cookie into an integral file descriptor.
2225 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2226 allocates zero bytes of storage, and returns a unique pointer which
2227 you can pass to `realloc' or `free'. The behavior is undefined if
2228 you dereference this pointer.
2230 * The C library now runs on Sony NEWS m68k machines running either
2231 NewsOS 3 or NewsOS 4.
2233 * The new `syscall' function is a system-dependent primitive function
2234 for invoking system calls. It has the canonical behavior on Unix
2235 systems, including unreliable return values for some calls (such as
2236 `pipe', `fork' and `getppid').
2238 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2239 to `EAGAIN', which is the preferred name. On systems whose kernels
2240 use two distinct codes, the C library now translates EWOULDBLOCK to
2241 EAGAIN in every system call function.
2242 \f
2243 Version 1.06
2245 * The GNU C Library Reference Manual is now distributed with the library.
2246 `make dvi' will produce a DVI file of the printed manual.
2247 `make info' will produce Info files that you can read on line using C-h i
2248 in Emacs or the `info' program.
2249 Please send comments on the manual to bug-glibc-manual@gnu.org.
2251 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2253 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2255 * Jason Merrill has contributed a port to the Sequent Symmetry running
2256 Dynix version 3 (i386-sequent-dynix).
2258 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2259 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2261 * New function `memory_warnings' lets you arrange to get warnings when
2262 malloc is running out of memory to allocate, like Emacs gives you.
2264 * The C library now contains the relocating allocator used in Emacs 19 for
2265 its editing buffers. This allocator (ralloc) minimizes allocation
2266 overhead and fragmentation by moving allocated regions around whenever it
2267 needs to. You always refer to a ralloc'd region with a "handle" (a
2268 pointer to a pointer--an object of type `void **').
2270 * There is a new `printf' format: `%m' gives you the string corresponding
2271 to the error code in `errno'.
2273 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2274 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2275 pass, the `a' modifier says to fill in a `char **' you pass with a
2276 malloc'd string.
2278 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2279 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2280 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2282 * `mkstemp' is a traditional Unix function to atomically create and open a
2283 uniquely-named temporary file.
2284 \f
2285 Version 1.05
2287 * The standard location for the file that says what the local timezone is
2288 has changed again. It is now `/usr/local/etc/localtime' (or more
2289 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2291 * The distribution no longer contains any files with names longer than 14
2292 characters.
2294 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2295 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2297 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2298 \f
2299 Version 1.04
2301 * The configuration process has changed quite a bit. The `configure'
2302 script is now used just like the configuration scripts for other GNU
2303 packages. The `sysdeps' directory hierarchy is much rearranged.
2304 The file `INSTALL' explains the new scheme in detail.
2306 * The header files no longer need to be processed into ANSI C and
2307 traditional C versions. There is just one set of files to install, and
2308 it will work with ANSI or old C compilers (including `gcc -traditional').
2310 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2311 MIPS DECStation running Ultrix 4.
2313 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2314 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2315 made itself into a shared library.
2317 * Yet further improved support for the i386, running 4.3 BSD-like systems
2318 (such as Mach 3 with the Unix single-server), or System V.
2320 * New function `strncasecmp' to do case-insensitive string comparison
2321 with limited length.
2323 * New function `strsep' is a reentrant alternative to `strtok'.
2325 * New functions `scandir' and `alphasort' for searching directories.
2327 * New function `setenv' is a better interface to `putenv'.
2329 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2330 function for traversing a directory tree.
2332 * The GNU obstack package is now also part of the C library.
2333 The new function `open_obstack_stream' creates a stdio stream that
2334 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2335 formatted output directly to an obstack.
2337 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2338 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2340 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2342 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2343 things to your strings.
2345 * There are some new test programs: test-fseek, testmb, and testrand.
2347 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2348 These ports are not finished, but are a good starting place for really
2349 supporting those systems.
2351 * `/etc/localtime' is now the standard location for the file that says what
2352 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2353 This follows the general principle that `/etc' is the place for all local
2354 configuration files.
2356 * The C library header files now use `extern "C"' when used by the C++
2357 compiler, so the C library should now work with C++ code.
2359 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2360 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2361 in <strings.h>.)
2363 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2364 function which uses the `merge sort' algorithm, and is said to be
2365 significantly faster than the old GNU `qsort' function. Merge sort is
2366 now the standard `qsort' function. The new algorithm can require a lot
2367 of temporary storage; so, the old sorting function is called when the
2368 required storage is not available.
2370 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2371 provides the Unix `crypt' function, plus some other entry points.
2373 * The code and header files taken from 4.4 BSD have been updated with the
2374 latest files released from Berkeley.
2375 \f
2376 ----------------------------------------------------------------------
2377 Copyright information:
2379 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2381 Permission is granted to anyone to make or distribute verbatim copies
2382 of this document as received, in any medium, provided that the
2383 copyright notice and this permission notice are preserved,
2384 thus giving the recipient permission to redistribute in turn.
2386 Permission is granted to distribute modified versions
2387 of this document, or of portions of it,
2388 under the above conditions, provided also that they
2389 carry prominent notices stating who last changed them.
2390 \f
2391 Local variables:
2392 version-control: never
2393 fill-column: 76
2394 End: