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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, 13028, 13982, 13985,
14 14029, 14032, 14120, 14143, 14155, 14547, 14699, 14752, 14876, 14910,
15 15004, 15048, 15089, 15128, 15218, 15268, 15277, 15308, 15362, 15374,
16 15400, 15425, 15427, 15483, 15522, 15531, 15532, 15593, 15601, 15608,
17 15609, 15610, 15632, 15640, 15670, 15672, 15680, 15681, 15723, 15734,
18 15735, 15736, 15748, 15749, 15754, 15760, 15763, 15764, 15797, 15799,
19 15825, 15843, 15844, 15846, 15847, 15849, 15855, 15856, 15857, 15859,
20 15867, 15886, 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905,
21 15909, 15915, 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963,
22 15966, 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041,
23 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
24 16146, 16150, 16151, 16153, 16167, 16172, 16195, 16214, 16245, 16271,
25 16274, 16283, 16289, 16314, 16316, 16330, 16338.
27 * The public headers no longer use __unused nor __block. This change is to
28 support compiling programs that are derived from BSD sources and use
29 __unused internally, and to support compiling with Clang's -fblock
30 extension which uses __block.
32 * CVE-2012-4412 The strcoll implementation caches indices and rules for
33 large collation sequences to optimize multiple passes. This cache
34 computation may overflow for large collation sequences and may cause a
35 stack or buffer overflow. This is now fixed to use a slower algorithm
36 which does not use a cache if there is an integer overflow.
38 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
39 rules for large collation sequences to optimize multiple passes and falls
40 back to alloca if malloc fails, resulting in a possible stack overflow.
41 The implementation now falls back to an uncached collation sequence lookup
42 if malloc fails.
44 * CVE-2013-4788 The pointer guard used for pointer mangling was not
45 initialized for static applications resulting in the security feature
46 being disabled. The pointer guard is now correctly initialized to a
47 random value for static applications. Existing static applications need
48 to be recompiled to take advantage of the fix (bug 15754).
50 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
51 to the d_name member of struct dirent, or omit the terminating NUL
52 character. (Bugzilla #14699).
54 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
55 aligned_alloc functions could allocate too few bytes or corrupt the
56 heap when passed very large allocation size values (Bugzilla #15855,
57 #15856, #15857).
59 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
60 for AF_INET6 has been fixed (Bugzilla #16072).
62 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
63 pap_CW, quz_PE, the_NP.
65 * Substantially revised locales: gd_GB, ht_HT
67 * The LC_ADDRESS field was updated to support country_car for almost all
68 supported locales.
70 * ISO 1427 definitions were updated.
72 * ISO 3166 definitions were updated.
74 * The localedef utility now supports --big-endian and --little-endian
75 command-line options to generate locales for a different system from that
76 for which the C library was built.
78 * Binary locale files now only depend on the endianness of the system for
79 which they are generated and not on other properties of that system. As a
80 consequence, binary files generated with new localedef may be incompatible
81 with old versions of the GNU C Library, and binary files generated with
82 old localedef may be incompatible with this version of the GNU C Library,
83 in the following circumstances:
85 + Locale files may be incompatible on m68k systems.
87 + Locale archive files (but not separate files for individual locales) may
88 be incompatible on systems where plain "char" is signed.
90 * The configure option --disable-versioning has been removed. Builds with
91 --disable-versioning had not worked for several years.
93 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
94 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
96 * SystemTap probes for malloc have been introduced.
98 * Support for powerpc64le has been added.
100 * The soft-float powerpc port now supports e500 processors.
102 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
104 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
105 conflict with POSIX. The libbsd-compat library (which was a dummy library
106 that did nothing) has also been removed.
107 \f
108 Version 2.18
110 * The following bugs are resolved with this release:
112 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
113 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
114 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
115 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
116 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
117 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
118 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
119 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
120 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
121 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
122 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
123 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
124 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
125 15759.
127 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
128 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
129 Distributions can re-enable building and using pt_chown via the new configure
130 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
131 considerable security risks and should only be used if the distribution
132 understands and accepts the risks.
134 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
135 #15078).
137 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
138 fixed (Bugzilla #15330).
140 * Add support for calling C++11 thread_local object destructors on thread
141 and program exit. This needs compiler support for offloading C++11
142 destructor calls to glibc.
144 * Improved worst case performance of libm functions with double inputs and
145 output.
147 * Support for priority inherited mutexes in pthread condition variables on
148 non-x86 architectures.
150 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
152 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
154 * Optimized string functions for ARM. Implemented by Will Newton and
155 Richard Henderson.
157 * Optimized libm functions for SPARC. Implemented by David S. Miller.
159 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
160 Richard Henderson.
162 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
163 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
165 * Added a benchmark framework to track performance of functions in glibc.
167 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
168 It is based on draft TS 18661 and currently enabled as a GNU extension.
170 * On Linux, the clock function now uses the clock_gettime system call
171 for improved precision, rather than old times system call.
173 * Added support for version-3 tz format files. This is needed when using
174 the tz database release 2013e or later, and affects a few unusual cases --
175 currently only TZ='America/Godthab' for time stamps after 2037.
177 * Added new API functions pthread_getattr_default_np and
178 pthread_setattr_default_np to get and set the default pthread
179 attributes of a process.
181 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
182 This may improve lock scaling of existing programs on TSX capable systems.
183 When the --enable-lock-elision=yes parameter is specified at configure
184 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
185 mutexes.
187 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
188 availability). Implemented by Ryan S. Arnold.
190 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
191 \f
192 Version 2.17
194 * The following bugs are resolved with this release:
196 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
197 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
198 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
199 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
200 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
201 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
202 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
203 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
204 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
205 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
206 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
207 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
208 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
209 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
210 14879, 14889, 14893, 14898, 14914.
212 * Optimization of memcpy for MIPS.
214 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
215 EMFILE has been fixed (Bugzilla #14889).
217 * The add-on ports collection is now distributed in the "ports" subdirectory
218 of the main GNU C Library distribution, rather than separately.
220 * Port to ARM AArch64 contributed by Linaro.
222 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
223 Optimized versions of memcpy, memset, and memcmp added for System z10 and
224 zEnterprise z196.
225 Implemented by Andreas Krebbel.
227 * The new function secure_getenv allows secure access to the environment,
228 returning NULL if running in a SUID/SGID process. This function replaces
229 the internal function __secure_getenv.
231 * SystemTap static probes have been added into the dynamic linker.
232 Implemented by Gary Benson.
234 * Optimizations of string functions strstr, strcasestr and memmem.
235 Implemented by Maxim Kuvyrkov.
237 * The minimum Linux kernel version that this version of the GNU C Library
238 can be used with is 2.6.16.
240 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
241 powerpc POWER7. Implemented by Will Schmidt.
243 * New configure option --disable-nscd builds the C library such that it
244 never attempts to contact the Name Service Caching Daemon (nscd).
245 New configure option --disable-build-nscd avoids building nscd itself;
246 this is the default if --disable-nscd is used.
248 * Improved support for cross-compilation, including cross-testing and
249 bootstrap builds without a previously built glibc.
251 * Several testsuite tests are now able to test multiple IFUNC variants of an
252 interface, rather than just testing the one that would be chooen by
253 default.
255 * New configure options --with-bugurl and --with-pkgversion, for
256 distributors to use to embed their bug-reporting and package version
257 information in --help and --version output.
259 * The ttyname and ttyname_r functions on Linux now fall back to searching for
260 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
261 allows creation of chroots without the procfs mounted on /proc.
263 * The `crypt' function now fails if passed salt bytes that violate the
264 specification for those values. On Linux, the `crypt' function will
265 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
266 enabled, and fail on encrypted strings using the MD5 or DES algorithm
267 when the mode is enabled.
269 * The `clock_*' suite of functions (declared in <time.h>) is now available
270 directly in the main C library. Previously it was necessary to link with
271 -lrt to use these functions. This change has the effect that a
272 single-threaded program that uses a function such as `clock_gettime' (and
273 is not linked with -lrt) will no longer implicitly load the pthreads
274 library at runtime and so will not suffer the overheads associated with
275 multi-thread support in other code such as the C++ runtime library.
277 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
278 sat_IN, and szl_PL.
279 \f
280 Version 2.16
282 * The following bugs are resolved with this release:
284 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
285 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
286 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
287 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
288 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
289 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
290 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
291 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
292 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
293 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
294 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
295 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
296 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
297 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
298 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
299 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
300 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
301 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
302 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
303 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
304 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
305 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
306 14277, 14278.
308 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
309 configuring glibc with:
310 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
311 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
312 Implemented by H.J. Lu.
314 * ISO C11 support:
316 + define static_assert
318 + do not declare gets
320 + declare at_quick_exit and quick_exit also for ISO C11
322 + aligned_alloc. NB: The code is deliberately allows the size parameter
323 to not be a multiple of the alignment. This is a moronic requirement
324 in the standard but it is only a requirement on the caller, not the
325 implementation.
327 + timespec_get added
329 + uchar.h support added
331 + CMPLX, CMPLXF, CMPLXL added
333 Implemented by Ulrich Drepper.
335 * Support for the IA-64 has been moved to ports.
337 * Remove support for anything but ELF binary format
339 * Checking versions of poll, ppoll added.
340 Implemented by Ulrich Drepper.
342 * More generic and 64-bit performance optimizations to math functions.
343 Implemented by Ulrich Drepper.
345 * New configure option --enable-obsolete-rpc makes the deprecated RPC
346 headers and functions available at compile time as they were before
347 version 2.14. This option will be removed at some time in the future
348 after the TI-RPC library becomes fully sufficient for the needs of
349 existing applications.
351 * Compatibility code for Linux kernel versions before 2.4 has been removed.
352 Note that glibc is not expected to work with any Linux kernel version
353 before 2.6.
355 * New header <sys/auxv.h> and function getauxval allowing easy access to
356 the AT_* key-value pairs passed from the Linux kernel. The header also
357 defines the HWCAP_* bits associated with the AT_HWCAP key.
359 * New locales: mag_IN
361 * New configure option --enable-systemtap builds SystemTap static probes
362 into libc for setjmp and longjmp and into libpthread for various operations.
363 So far the setjmp/longjmp probes and some of the libpthread probes are
364 provided only for i*86 and x86_64.
365 Implemented by Roland McGrath and Rayson Ho.
367 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
369 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
370 and Will Schmidt.
372 * More optimized functions for SPARC. Implemented by David S. Miller.
374 * Improved support for cross-compilation, especially bootstrap builds
375 without a previously built glibc.
377 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
378 Chris Metcalf from Tilera.
380 * Support for the old ARM ABI has been removed from ports. Only the EABI is
381 now supported for ARM processors.
383 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
384 as the name of the dynamic linker, to distinguish it from the
385 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
387 * Support for CRIS has been removed from ports.
389 * A new class of installed header has been documented for low-level
390 platform-specific functionality. PowerPC added the first instance with a
391 function to provide time base register access. Contributed by Tulio
392 Magno Quites Machado Filho.
394 * ix86 configurations now install header files that are consistent with
395 what x86-64 configurations install. These same header files can be used
396 for -m32, -m64, or -mx32 builds.
397 Contributed by H.J. Lu.
399 * Math library bug fixes. A thorough audit of all open math library bugs was
400 conducted by Joseph Myers. Significant progress was made on many math
401 library bugs resulting in more accurate exceptions and function results.
402 Many thanks to all those that contributed including Andreas Jaeger for his
403 patch review and work on the x87 trigonometric instruction issues.
405 * Timezone data is no longer installed. Timezone-related binaries and scripts
406 will continue to be installed. Users should obtain their timezone data from
407 their distribution provider or from the tzdata package at
408 <ftp://munnari.oz.au/pub/>.
409 \f
410 Version 2.15
412 * The following bugs are resolved with this release:
414 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
415 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
416 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
417 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
418 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
419 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
420 13484, 13506, 13515, 13523, 13524, 13538, 13540
422 * New program pldd to list loaded object of a process
423 Implemented by Ulrich Drepper.
425 * Add nss_db support back to glibc. No more dependency on Berkeley db
426 and support for initgroups lookups.
427 Implemented by Ulrich Drepper.
429 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
430 Contributed by HJ Lu.
432 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
433 Contributed by HJ Lu.
435 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
436 on x86-32 and x86-64.
437 Contributed by Liubov Dmitrieva.
439 * Optimized strchr and strrchr for SSE on x86-32.
440 Contributed by Liubov Dmitrieva.
442 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
443 for x86-64 and x86-32.
444 Contributed by Liubov Dmitrieva.
446 * New interfaces: scandirat, scandirat64
447 Implemented by Ulrich Drepper.
449 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
450 Implemented by Ulrich Drepper.
452 * nscd now also caches the netgroup database.
453 Implemented by Ulrich Drepper.
455 * Integrate libm with gcc's -ffinite-math-only option.
456 Implemented by Ulrich Drepper.
458 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
459 to math functions. Implemented by Ulrich Drepper.
461 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
462 Implemented by Ulrich Drepper.
464 * New Linux interfaces: process_vm_readv, process_vm_writev
466 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
467 Implemented by Ulrich Drepper.
469 * Optimized nearbyint and strcasecmp for PPC.
470 Implemented by Adhemerval Zanella.
472 * New locales: bho_IN, unm_US, es_CU, ta_LK
473 \f
474 Version 2.14
476 * The following bugs are resolved with this release:
478 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
479 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
480 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
481 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
482 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
483 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
484 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
485 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
486 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
487 12795, 12811, 12813, 12814, 12841
489 * The RPC implementation in libc is obsoleted. Old programs keep working
490 but new programs cannot be linked with the routines in libc anymore.
491 Programs in need of RPC functionality must be linked against TI-RPC.
492 The TI-RPC implementation is IPv6 enabled and there are other benefits.
494 Visible changes of this change include (obviously) the inability to link
495 programs using RPC functions without referencing the TI-RPC library and the
496 removal of the RPC headers from the glibc headers.
497 Implemented by Ulrich Drepper.
499 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
500 syncfs, setns, sendmmsg
502 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
503 yue_HK, lij_IT, mhr_RU
505 * New encodings: CP770, CP771, CP772, CP773, CP774
507 * New program sotruss to trace calls through PLTs
508 Implemented by Ulrich Drepper.
510 * The malloc hook implementation is marked deprecated and will be removed
511 from the default implementation in the next version. The design never
512 worked ever since the introduction of threads. Even programs which do
513 not create threads themselves can use multiple threads created internally.
514 \f
515 Version 2.13
517 * The following bugs are resolved with this release:
519 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
520 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
521 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
522 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
523 12378, 12394, 12397
525 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
527 * POWER7 optimizations: memset, memcmp, strncmp
529 * New optimized string functions for x86-64: strnlen (SSE2),
530 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
531 Implemented by Ulrich Drepper.
532 \f
533 Version 2.12
535 * The following bugs are resolved with this release:
537 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
538 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
539 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
540 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
541 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
542 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
543 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
544 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
546 * New interfaces: pthread_getname_np, pthread_setname_np
548 * New Linux interface: recvmmsg
550 * STT_GNU_IFUNC implemented for Sparc by David Miller.
552 * The dynamic linker now recognizes supported ABI versions from the
553 EI_ABIVERSION field in the ELF header.
554 Implemented by Ulrich Drepper.
556 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
557 will not be used to fill in password fields in the passwd.byname replies.
558 Instead it is used to synthesize the shadow.byname table, should it be
559 missing. This is a useful mode in some installations involving Solaris.
560 Implemented by Ulrich Drepper.
562 * New locales: kok_IN, sq_MK, cv_RU
563 \f
564 Version 2.11
566 * The following bugs are resolved with this release:
568 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
569 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
570 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
571 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
572 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
573 10789, 10817, 10823, 10840, 10847
575 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
576 mkostemps64
577 Implemented by Ulrich Drepper.
579 * Checking version of longjmp added that fails if an uninitialized stack
580 frame would be created. Implemented by Ulrich Drepper.
582 * STT_GNU_IFUNC is now supported in static executables.
583 Implemented by H.J. Lu.
585 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
587 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
588 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
589 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
590 Contributed by H.J. Lu.
592 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
593 Implemented by Ulrich Drepper.
595 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
596 strstr, strcasestr.
597 Contributed by H.J. Lu.
599 * Support for fma instruction in AVX on x86-64.
600 Implemented by H.J. Lu and Ulrich Drepper.
602 * AVX support in x86-64 auditing support in ld.so.
603 Implemented by H.J. Lu.
605 * STB_GNU_UNIQUE support added.
606 Implemented by Ulrich Drepper.
608 * Implement second fallback mode for optimized DNS lookup for even more
609 broken environments. If two requests from the same port are not
610 handled correctly close the socket and open a new one before sending
611 the second request. The 'single-request-reopen' option in /etc/resolv.conf
612 can be used to select this mode right away, instead of rediscovering the
613 necessity is every process again.
614 Implemented by Ulrich Drepper.
616 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
617 Implemented by Adam Tkac.
619 * Optimized iconv conversions for S390x.
620 Implemented by Andreas Krebbel.
622 * Using condvars with PI mutexes is now more efficient due to kernel
623 support for requeueing to PI futexes. NPTL support added for x86-64.
624 Implemented by Ulrich Drepper.
626 * New locales: ps_AF, my_MM
627 \f
628 Version 2.10
630 * The following bugs are resolved with this release:
632 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
633 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
634 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
635 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
636 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
638 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
639 Implemented by Ulrich Drepper.
641 * New Linux interfaces: accept4, fallocate, fallocate64.
642 Implemented by Ulrich Drepper.
644 * Correct declarations of string function when used in C++ code. This
645 could lead to compile errors for invalid C++ code.
647 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
648 now in POSIX.
650 * New POSIX 2008 interface: psiginfo
651 Implemented by Ulrich Drepper.
653 * New ISO C++1x interfaces: quick_exit, at_quick_exit
654 Implemented by Ulrich Drepper.
656 * Support for selecting between multiple function definitions at runtime
657 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
659 * The libcrypt library can now use the hash function implementations in
660 NSS. Implemented by Ulrich Drepper.
662 * The malloc implementation can be compiled to be less memory efficient
663 but higher performing in multi-threaded programs.
664 Implemented by Ulrich Drepper.
666 * New locales: nan_TW@latin, ks_IN
668 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
669 Implemented by Ulrich Drepper.
671 * Extended printf hook support. It is possible to use user-defined types
672 and extend existing format specifiers.
673 Implemented by Ulrich Drepper.
675 * Handling for group shadow files has been added.
676 Implemented by Ulrich Drepper.
678 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
679 servers (the case, e.g., for some people using the built-in DNS
680 server in ADSL modems/routers). There is a once-per-process timeout
681 in case of a broken server. To avoid it, users can run nscd or put
682 'options single-request' in /etc/resolv.conf.
683 Implemented by Ulrich Drepper.
684 \f
685 Version 2.9
687 * The following bugs are resolved with this release:
689 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
690 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
691 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
692 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
693 6968, 6974, 6980, 6995, 7008, 7009, 7029
695 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
696 up at the same time. Implemented by Ulrich Drepper.
698 * TLS descriptors for LD and GD on x86 and x86-64.
699 Implemented by Alexandre Oliva.
701 * getaddrinfo now handles DCCP and UDPlite.
702 Implemented by Ulrich Drepper.
704 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
705 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
706 Implemented by Ulrich Drepper.
708 * New implementation of memmem, strstr, and strcasestr which is O(n).
709 Implemented by Eric Blake.
711 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
713 * Implement "e" option for popen to open file descriptor with the
714 close-on-exec flag set. Implemented by Ulrich Drepper.
716 * Implement "b" mode for fmemopen. In this mode writes writes don't
717 implicitly add a NUL byte and seeks from the end of the buffer really
718 use the buffer end, not the string length as the basis.
719 Implemented by Ulrich Drepper.
721 * Many functions, exported and internal, now atomically set the close-on-exec
722 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
724 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
725 Sinhala)
726 Implemented by Pravin Satpute.
728 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
729 \f
730 Version 2.8
732 * The following bugs are resolved with this release:
734 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
735 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
736 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
737 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
738 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
739 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
740 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
742 * New locales: bo_CN, bo_IN, shs_CA.
744 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
746 * Sorting rules for some Indian languages (Devanagari and Gujarati).
747 Implemented by Pravin Satpute.
749 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
751 * nscd caches now all timeouts for DNS entries
752 Implemented by Ulrich Drepper.
754 * nscd is more efficient and wakes up less often.
755 Implemented by Ulrich Drepper.
757 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
758 vdprintf, and obstack_vprintf.
759 Implemented by Jakub Jelinek.
761 * Faster memset for x86-64.
762 Implemented by Harsha Jagasia and H.J. Lu.
764 * Faster memcpy on x86.
765 Implemented by Ulrich Drepper.
767 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
768 Implemented by Ulrich Drepper.
770 * Faster sqrt and sqrtf implemention for some PPC variants.
771 Implemented by Steven Munroe.
772 \f
773 Version 2.7
775 * The following bugs are resolved with this release:
777 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
778 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
779 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
780 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
781 5071, 5103, 5104, 5112, 5113, 5184, 5186
783 * More checking functions: fread, fread_unlocked, open*, mq_open.
784 Implemented by Jakub Jelinek and Ulrich Drepper.
786 * Extend fortification to C++. Implemented by Jakub Jelinek.
788 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
789 by not recognizing 'a' as a modifier when those specs are requested.
790 Implemented by Jakub Jelinek.
792 * PPC optimizations to math and string functions.
793 Implemented by Steven Munroe.
795 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
796 options to be passed. Implemented by Ulrich Drepper.
798 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
800 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
801 Implemented by Ulrich Drepper.
803 * Handle private futexes in the NPTL implementation.
804 Implemented by Jakub Jelinek and Ulrich Drepper.
806 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
807 Implemented by Roland McGrath and Ulrich Drepper.
809 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
811 * SHA-256 and SHA-512 based password encryption.
812 Implemented by Ulrich Drepper.
814 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
815 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
816 yo_NG.
818 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
819 Implemented by Ulrich Drepper.
820 \f
821 Version 2.6
823 * The following bugs are resolved with this release:
825 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
826 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
827 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
828 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
829 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
830 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
831 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
832 4702, 4858
834 * New Linux interfaces: epoll_pwait, sched_getcpu.
836 * New generic interfaces: strerror_l.
838 * nscd can now cache the services database. Implemented by Ulrich Drepper.
839 \f
840 Version 2.5
842 * The following bugs are resolved with this release:
844 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
845 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
846 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
847 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
848 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
849 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
850 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
851 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
852 3225, 3251, 3252, 3253, 3273
854 * For Linux, the sorting of addresses returned by getaddrinfo now also
855 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
856 Implemented by Ulrich Drepper.
858 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
859 Implemented by Ulrich Drepper.
861 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
863 * New iconv module for MIK. Contributed by Alexander Shopov.
865 * For sites with broken group and/or passwd database, the auto-propagate
866 option of nscd can prevent creating ID lookup entries from the results
867 of a name lookup and vice versa. This usually is no problem but some
868 site might have problems with the default behavior.
869 Implemented by Ulrich Drepper.
871 * Iterating over entire database in NIS can be slow. With the
872 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
873 to trade time for memory. The entire database will be read at once.
874 Implemented by Ulrich Drepper.
876 * The interfaces introduced in RFC 3542 have been implemented by
877 Ulrich Drepper.
879 * Support for the new ELF hash table format was added by Ulrich Drepper.
881 * Support for priority inheritance mutexes added by Jakub Jelinek and
882 Ulrich Drepper.
884 * Support for priority protected mutexes added by Jakub Jelinek.
886 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
887 or_IN, csb_PL, fy_NL, sr_ME.
888 \f
889 Version 2.4
891 * More overflow detection functions.
893 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
894 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
896 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
897 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
898 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
899 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
900 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
901 by Masahide Washizawa.
903 * It is now possible to install audit libraries for the dynamic linker using
904 LD_AUDIT. Implemented by Ulrich Drepper.
906 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
907 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
908 For a libc and libpthread that works well on Linux 2.4 kernels, we
909 recommend using the stable 2.3 branch.
911 * The new function open_wmemstream acts like open_memstream,
912 but uses a wchar_t wide character buffer.
914 * The new function ppoll is an improved version of poll, similar to pselect.
916 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
917 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
918 renameat, unlinkat, linkat, symlinkat, readlinkat.
920 * New Linux kernel system calls: unshare,
921 inotify_init, inotify_add_watch, inotify_rm_watch.
923 * The euidaccess function is now also known by the alias eaccess,
924 for compatibility with some other systems.
926 * Timezone data updated to 2006b version.
927 \f
928 Version 2.3.6
930 * The following bugs are resolved with this release:
932 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
933 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
934 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
935 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
936 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
937 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
939 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
941 * As of this release, GCC 4 can be used to compile the C Library.
943 * Timezone data updated to 2005m version.
944 \f
945 Version 2.3.5
947 * The following bugs are resolved with this release:
949 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
950 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
951 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
952 777, 787, 821, 822, 823, 825
954 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
955 \f
956 Version 2.3.4
958 * Support for RFC 3678. Real implementations exist only for Linux so far.
959 Implemented by Ulrich Drepper.
961 * nscd can now cache entries persistently. Expiring entries are reloaded.
962 For speedups the cache can be shared in memory with client processes.
963 Implemented by Ulrich Drepper.
965 * nscd can now perform SELinux checks.
966 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
968 * getaddrinfo queries are now cached. Canonical name lookup is performed
969 efficiently.
970 Implemented by Ulrich Drepper.
972 * The nothrow function attribute is used when headers are used by gcc when
973 compiling C code. This can avoid significant amounts of exception
974 handling data.
976 * The malloc functions perform more error checking and are stricter when
977 it comes to reacting on errors. The default action is to terminate
978 the process after showing an error message. Implemented by Ulrich Drepper.
980 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
981 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
983 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
984 namespaces using the new function dlmopen(). This feature is of course,
985 like most other dynamic loading functionality, not available in statically
986 linked applications. Implemented by Ulrich Drepper.
988 * Low-overhead boundary checking variants of string and some stdio functions
989 were added. These are to be used in conjunction with a gcc patch by
990 Jakub Jelinek which adds calls to these functions if possible.
991 Implemented by Jakub Jelinek and Ulrich Drepper.
993 * Old code for several operating systems and machine architectures that
994 have not been in working condition in a long time have been removed from
995 the main source tree maintained by the GNU C Library's maintainers.
996 These files are now reside in the separate `ports' source module
997 that is usable as an add-on when building the library.
998 \f
999 Version 2.3.3
1001 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1002 interrogate the dynamic linker, compatible with the Solaris interface.
1004 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1005 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1007 * getifaddrs now uses the netlink interface on Linux to get its information.
1008 Implemented by Thorsten Kukuk.
1010 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1011 Implemented by Ulrich Drepper.
1013 * support for non-executable stacks on x86 has been added. Changes mostly
1014 by Roland McGrath.
1016 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1017 and Ulrich Drepper.
1019 * getaddrinfo now performs destination address selection according to
1020 RFC 3484.
1021 \f
1022 Version 2.3.2
1024 * Thread-safe interfaces for many functions that access locale data
1025 were added in version 2.3, but these features were omitted from NEWS.
1026 Many functions have variants with an `_l' suffix that take a `locale_t'
1027 object as a parameter rather than consulting the current locale.
1028 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1029 create and maintain `locale_t' objects. Additionally, the new function
1030 `uselocale' sets "the current locale" (as used by functions not so
1031 parameterized) set for an individual thread. These features were added
1032 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1034 * The functions getresuid, getresgid, setresuid, and setresgid, which
1035 have long been available on Linux, are now declared in <unistd.h>
1036 and are now also available on the Hurd.
1038 * ELF thread-local storage support (TLS) now works on x86-64.
1040 * The new dynamic string token $LIB is expanded in shared library names.
1041 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1043 * Aldy Hernandez contributed complete software floating point support for
1044 PowerPC machines with no FPU.
1046 * fexecve is implemented on Linux.
1048 * The `btowc' function should work at least twice as fast due to
1049 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1051 * With approriate thread add-ons cancelable functions are now implemented
1052 in libc.so as well. No need to call the function in libpthread. This
1053 change allowed to finally disable the incorrect and expensive handling
1054 of weak definition in ld.so.
1056 * Yet more PLT entries in libc.so have been removed. We finally arrived
1057 at the bare minimum. Startup times improved appropriately.
1059 * Support for the new Linux/x86 system call interface was added. The
1060 AT_SYSINFO auxiliary vector entry is recognized and handled.
1061 \f
1062 Version 2.3
1064 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1065 charsets.
1067 * iconv (the program and the interface) now accepts empty names (excluding
1068 options like //TRANSLIT) to mean "use charset of current locale".
1070 * localedef can now transliterate characters in strings which are not in
1071 the provided charmap. The information from the input locale is used.
1073 * Prelinking support was added for ELF targets. This requires additional
1074 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1076 * Read-only stdio streams now use mmap to speed up operation by eliminating
1077 copying and buffer underflows. To use add 'm' to the mode string of
1078 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1080 * The malloc functions were completely rewritten by Wolfram Gloger based
1081 on Doug Lea's malloc-2.7.0.c.
1083 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1084 implementation of regex.
1086 * Bruno Haible upgraded the iconv and locale implementation to support
1087 Unicode 3.2.
1089 * Contents of the LC_* and LANG environment variables in the CEN style are
1090 not recognized anymore. It never was used. Change by Ulrich Drepper.
1092 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1093 thread-local storage (TLS) ABI on some platforms.
1094 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1096 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1097 EUC-JISX0213, and TSCII.
1099 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1100 BSD-compatible interface for getting all network interface addresses.
1101 Implementation for IPv4 by Roland McGrath.
1103 * Loading of locale data is faster due to the introduction of a locale
1104 archive. Implemented by Roland McGrath and Ulrich Drepper.
1106 * Startup times are significantly reduced by not using exported functions
1107 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1108 and Ulrich Drepper.
1110 * Steven Munroe contributed a port to PowerPC64/Linux.
1111 \f
1112 Version 2.2.6
1114 * The Hurd now uses the GNU libio implementation of stdio rather than the
1115 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1117 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1118 with the same behavior as the Linux system call of the same name.
1119 \f
1120 Version 2.2.5
1122 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1123 128-bit long double format.
1125 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1126 IBM1161, and IBM1162 charsets.
1128 * Andreas Jaeger contributed a port to x86-64/Linux.
1130 * Peter Bruin contributed a port to PowerPC/Hurd.
1132 * libc functions using I/O streams now can handle wide-oriented streams
1133 as well.
1135 * optimizations in the dynamic linker. Binaries created by recent binutils
1136 versions start up quicker due to reduced time spent on relocations.
1138 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1139 \f
1140 Version 2.2.4
1142 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1143 asinh, atanh, j0 for the 128-bit long double format.
1145 * Bruno Haible updated all the code handling Unicode in some form to
1146 support Unicode 3.1.
1148 * Speed of regex for single-byte locales is back to previous levels.
1149 Patch by Isamu Hasegawa.
1151 * Alpha, SPARC, and IA-64 now also using floating stacks.
1153 * Startup time of internationalized applications greatly improved through
1154 iconv cache. Use iconvconfig to generate the cache file.
1155 Contributed by Ulrich Drepper.
1157 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1158 severe performance problems. Patch by David Mosberger.
1160 * The Hurd port got a lot more functionality like AIO, various stdio
1161 extensions, etc. Mainly done by Roland McGrath.
1163 * mtrace can now lookup symbols in shared libraries.
1164 \f
1165 Version 2.2.3
1167 * Intel's IA-64 math library is largely integrated. It provides fast and
1168 accurate implementatations for most basic and standard math functions
1169 in float, double, and long double format.
1171 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1172 and asin for the 96-bit long double format and asin, log, tan for the
1173 128-bit long double format.
1175 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1176 The basic double functions exist today. Contributed by Abraham Ziv
1177 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1178 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1180 * An asynchronous name lookup library was added. The interface is designed
1181 after POSIX AIO. The proposal was circulated beforehand to get comments.
1182 No negative ones came in. Implemented by Ulrich Drepper.
1184 * Port to S390/64bit contributed by Martin Schwidefsky
1185 <schwidefsky@de.ibm.com>.
1187 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1188 of functions for Linux/IA-64.
1190 * The RPC code is now thread safe. Threads can now use the same service
1191 of different services at the same time. Patch by Eric Norum
1192 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1194 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1195 family of functions for Linux/S390.
1197 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1198 of functions for Linux/x86.
1200 * Port to Linux/CRIS contributed by Axis Communications.
1201 \f
1202 Version 2.2.2
1204 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1205 we can now check for namespace violations and missing declarations. The
1206 result is that almost all headers are now Unix-compliant (as defined in
1207 the upcoming XPG6). The negative side is that some programs might need
1208 corrections, too, if they depend on the incorrect form of the headers in
1209 previous versions which defined too many symbols and included too many
1210 other headers.
1212 * regex now handles multibyte character sets correctly.
1213 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1215 * iconv (the program) does now conform to the upcoming XPG6 and handles
1216 charmaps. Instead of the charset names the path of charmaps can be
1217 provided and the conversion happens based on this data.
1218 Contributed by Ulrich Drepper.
1220 * The locale program now provides detailed information about the installed
1221 locales. While
1223 locale -a
1225 only lists the names of the supported locales
1227 locale -a --verbose
1229 provides details such as country, language, and codeset name.
1230 Contributed by Ulrich Drepper.
1231 \f
1232 Version 2.2.1
1234 * The gencat program now parses the input file according to the charset
1235 selected by the LC_CTYPE category. This is important for stateful
1236 character sets. To make generating catalogs easier there is a way
1237 to overwrite the charset selected by the locale: before the first
1238 message or $ quote line the catalog can contain a line like
1240 $ codeset=ISO-8859-2
1242 to select the charset (ISO-8859-2 in this case).
1244 Implemented by Shinya Hanataka and Ulrich Drepper.
1246 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1247 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1248 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1250 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1251 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1253 * The LANGUAGE environment variable is now ignored unless the locale is
1254 changed from the default "C" locale.
1256 * The usual bug fixes.
1257 \f
1258 Version 2.2
1260 * Greg McGary added runtime support for bounds checking using gcc's
1261 new -fbounded-pointers option. ix86 target is complete. PowerPC
1262 is in progress.
1264 * Thorsten Kukuk added secure mode support to nscd.
1266 * The Berkeley db libraries have been removed.
1268 Related, the nss_db module is now in a separate package since it
1269 obviously requires a database library being available.
1271 * Wide character I/O streams implemented by Ulrich Drepper.
1273 * Functions from the extended socket API added by Ulrich Drepper.
1275 * Functions feenableexcept and fedisableexcept to control the
1276 behaviour of individual exceptions have been added by Andreas Jaeger.
1278 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1280 * The resolver code has been updated from bind 8.2.3-T5B which supports
1281 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1282 and Mark Kettenis.
1284 This change could in some situations effect backward compatibility. Since
1285 now `_res' is a thread-local instead of a global variable, modifying it
1286 in one thread does not have any effect in other threads.
1288 The resolver library was also extended to allow IPv6 as the transport
1289 protocol for the requests. This work was done by Stig Venaas.
1291 * Compatibility code for K&R C compilers has been removed from the
1292 header files. A ISO C compiler is needed to use the library
1293 (conforming to either C89 or C99 standard).
1295 * Complete rewrite of the localedef program to support multibyte character
1296 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1297 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1298 Implemented by Ulrich Drepper.
1300 Bruno Haible significantly improved the generation and use of the data
1301 structures for the wide character tables.
1303 * Plural handling in gettext implemented by Ulrich Drepper.
1305 * The utmp daemon has been removed.
1307 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1309 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1310 and Yutaka Niibe.
1312 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1314 * POSIX barriers implemented by Kaz Kylheku.
1316 * POSIX spawn function family implemented by Ulrich Drepper.
1318 * POSIX spinlocks are now available.
1320 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1322 * the configure option --enable-kernel=X.Y.Z allows to strip out
1323 compatibility for kernel versions before X.Y.Z. This is currently only
1324 implemented for Linux.
1326 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1327 field sin6_scope_id. This means that all programs using IPv6 should be
1328 recompiled. Don't expect binary compatibility with previous glibc
1329 versions.
1331 * various conversion modules for IBM character sets contributed by
1332 Masahide Washizawa.
1334 * IA-64 port by Jes Sorensen and HJ Lu.
1335 \f
1336 Version 2.1.3
1338 * bug fixes
1340 \f
1341 Version 2.1.2
1343 * bug fixes
1345 \f
1346 Version 2.1.1
1348 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1350 * New xdr functions are added; some rpc functions are now 64bit clean.
1352 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1354 * Fixed known incompatibilities with glibc 2.0.
1356 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1358 * Optimized a number of functions (especially the ELF dynamic loader).
1360 * Update timezone data files.
1362 * lots of charmaps corrections
1364 * some new locale definitions and charmaps
1366 \f
1367 Version 2.1
1369 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1370 conform to POSIX member type requirements. Symbol versions have been
1371 adjusted as needed within the library, and for direct use by applications,
1372 but there is potential for problems if third-party libraries use
1373 struct timeval as part of their interface. This does not present
1374 a problem for X and other "essential" system libraries.
1376 * An additional locale model to support C++ Standard Library locale
1377 model and probably more was implemented by Ulrich Drepper.
1379 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1380 symbol level.
1382 * Miles Bader provided the `argp' function family to support hierachical
1383 command line argument parsing, layered on top of getopt.
1385 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1387 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1388 numbers.
1390 * scanf recognizes the %a and %A format for scanning floating point numbers.
1392 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1393 information and interfaces for the available integer types.
1395 * about 130 new math functions were added to implement the ISO C9x math
1396 library.
1398 * the new header <complex.h> contains definitions of the complex math
1399 functions from ISO C 9X.
1401 * the new header <tgmath.h> defines generic macros to use complex or
1402 real valued functions.
1404 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1406 * Andreas Jaeger provided a test suite for the math library.
1408 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1410 * Ulrich Drepper added character set conversion functions (iconv).
1412 * Optimized string functions have been added.
1414 * The localedata addon is now part of glibc.
1416 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1418 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1419 daemon for NSS (nscd).
1421 Missing a better place here are some numbers on improvements. Under
1422 Linux 2.1.125 un-tar-ing the kernel sources takes
1424 user system wall
1426 using local files 12.19s 6.88s 22.91s
1428 using NIS 13.92s 8.91s 26.34s
1430 using NIS & nscd 10.37s 7.34s 25.30s
1432 using NIS+ 27.57s 30.37s 640.46s
1434 using NIS+ & nscd 10.25s 7.83s 26.51s
1436 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1438 Keep in mind that non-namelookup related operations dominate above times.
1439 It was just a common complain that using NIS+ unpacking the kernel is
1440 horribly slow.
1442 [1] The old nscd implementation is not available anymore since it was
1443 distributed with glibc up to version 2.0.98 and thus is now replaced.
1445 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1447 * Mark Kettenis provided a Hesiod NSS module.
1449 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1450 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1452 * rcmd can now handle netgroups (Dick Streefland).
1454 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1455 Bambrough.
1457 * Support for the IPv6 protocol has been added to the socket API, as per the
1458 latest draft standards.
1460 * Support for Linux 2.2 has been added.
1462 * Interface changes relative to the latest 2.0.x release:
1463 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1464 addseverity NEW: Unix98
1465 alphasort64 NEW: LFS
1466 argp_err_exit_status NEW: argp, GNU ext
1467 argp_error NEW: argp, GNU ext
1468 argp_failure NEW: argp, GNU ext
1469 argp_help NEW: argp, GNU ext
1470 argp_parse NEW: argp, GNU ext
1471 argp_program_bug_address NEW: argp, GNU ext
1472 argp_program_version NEW: argp, GNU ext
1473 argp_program_version_hook NEW: argp, GNU ext
1474 argp_state_help NEW: argp, GNU ext
1475 argp_usage NEW: argp, GNU ext
1476 authdes_create NEW: Secure RPC
1477 authdes_getucred NEW: Secure RPC
1478 authdes_pk_create NEW: Secure RPC
1479 backtrace NEW: GNU ext.
1480 backtrace_symbols NEW: GNU ext.
1481 backtrace_symbols_fd NEW: GNU ext.
1482 cacos NEW: ISO C 9x
1483 cacosf NEW: ISO C 9x
1484 cacosh NEW: ISO C 9x
1485 cacoshf NEW: ISO C 9x
1486 cacoshl NEW: ISO C 9x
1487 cacosl NEW: ISO C 9x
1488 capget NEW: kernel
1489 capset NEW: kernel
1490 carg NEW: ISO C 9x
1491 cargf NEW: ISO C 9x
1492 cargl NEW: ISO C 9x
1493 casin NEW: ISO C 9x
1494 casinf NEW: ISO C 9x
1495 casinh NEW: ISO C 9x
1496 casinhf NEW: ISO C 9x
1497 casinhl NEW: ISO C 9x
1498 casinl NEW: ISO C 9x
1499 catan NEW: ISO C 9x
1500 catanf NEW: ISO C 9x
1501 catanh NEW: ISO C 9x
1502 catanhf NEW: ISO C 9x
1503 catanhl NEW: ISO C 9x
1504 catanl NEW: ISO C 9x
1505 cbc_crypt NEW: Secure RPC
1506 ccos NEW: ISO C 9x
1507 ccosf NEW: ISO C 9x
1508 ccosh NEW: ISO C 9x
1509 ccoshf NEW: ISO C 9x
1510 ccoshl NEW: ISO C 9x
1511 ccosl NEW: ISO C 9x
1512 cexp NEW: ISO C 9x
1513 cexpf NEW: ISO C 9x
1514 cexpl NEW: ISO C 9x
1515 cimag NEW: ISO C 9x
1516 cimagf NEW: ISO C 9x
1517 cimagl NEW: ISO C 9x
1518 clearerr_locked REMOVED
1519 clntunix_create NEW: sunrpc ext
1520 clog NEW: ISO C 9x
1521 clog10 NEW: ISO C 9x
1522 clog10f NEW: ISO C 9x
1523 clog10l NEW: ISO C 9x
1524 clogf NEW: ISO C 9x
1525 clogl NEW: ISO C 9x
1526 conj NEW: ISO C 9x
1527 conjf NEW: ISO C 9x
1528 conjl NEW: ISO C 9x
1529 cpow NEW: ISO C 9x
1530 cpowf NEW: ISO C 9x
1531 cpowl NEW: ISO C 9x
1532 cproj NEW: ISO C 9x
1533 cprojf NEW: ISO C 9x
1534 cprojl NEW: ISO C 9x
1535 creal NEW: ISO C 9x
1536 crealf NEW: ISO C 9x
1537 creall NEW: ISO C 9x
1538 creat64 NEW: LFS
1539 csin NEW: ISO C 9x
1540 csinf NEW: ISO C 9x
1541 csinh NEW: ISO C 9x
1542 csinhf NEW: ISO C 9x
1543 csinhl NEW: ISO C 9x
1544 csinl NEW: ISO C 9x
1545 csqrt NEW: ISO C 9x
1546 csqrtf NEW: ISO C 9x
1547 csqrtl NEW: ISO C 9x
1548 ctan NEW: ISO C 9x
1549 ctanf NEW: ISO C 9x
1550 ctanh NEW: ISO C 9x
1551 ctanhf NEW: ISO C 9x
1552 ctanhl NEW: ISO C 9x
1553 ctanl NEW: ISO C 9x
1554 des_setparity NEW: Secure RPC
1555 ecb_crypt NEW: Secure RPC
1556 endutxent NEW: Unix98
1557 exp10 NEW: ISO C 9x
1558 exp10f NEW: ISO C 9x
1559 exp10l NEW: ISO C 9x
1560 exp2 NEW: ISO C 9x
1561 exp2f NEW: ISO C 9x
1562 exp2l NEW: ISO C 9x
1563 fattach NEW: STREAMS
1564 fdetach NEW: STREAMS
1565 fdim NEW: ISO C 9x
1566 fdimf NEW: ISO C 9x
1567 fdiml NEW: ISO C 9x
1568 feclearexcept NEW: ISO C 9x
1569 fegetenv NEW: ISO C 9x
1570 fegetexceptflag NEW: ISO C 9x
1571 fegetround NEW: ISO C 9x
1572 feholdexcept NEW: ISO C 9x
1573 feof_locked REMOVED
1574 feraiseexcept NEW: ISO C 9x
1575 ferror_locked REMOVED
1576 fesetenv NEW: ISO C 9x
1577 fesetexceptflag NEW: ISO C 9x
1578 fesetround NEW: ISO C 9x
1579 fetestexcept NEW: ISO C 9x
1580 feupdateenv NEW: ISO C 9x
1581 fflush_locked REMOVED
1582 ffsl NEW: GNU ext.
1583 ffsll NEW: GNU ext.
1584 fgetpos64 NEW: LFS
1585 fgets_unlocked NEW: GNU ext.
1586 fileno_locked REMOVED
1587 fma NEW: ISO C 9x
1588 fmaf NEW: ISO C 9x
1589 fmal NEW: ISO C 9x
1590 fmax NEW: ISO C 9x
1591 fmaxf NEW: ISO C 9x
1592 fmaxl NEW: ISO C 9x
1593 fmin NEW: ISO C 9x
1594 fminf NEW: ISO C 9x
1595 fminl NEW: ISO C 9x
1596 fmtmsg NEW: Unix98
1597 fopen64 NEW: LFS
1598 fputc_locked REMOVED
1599 fputs_unlocked NEW: GNU ext.
1600 fread_unlocked NEW: GNU ext.
1601 freopen64 NEW: LFS
1602 fseeko NEW: Unix98
1603 fsetpos64 NEW: LFS
1604 fstatfs64 NEW: LFS
1605 fstatvfs NEW: Unix98
1606 fstatvfs64 NEW: LFS
1607 ftello NEW: Unix98
1608 ftello64 NEW: LFS
1609 ftruncate64 NEW: LFS
1610 ftw64 NEW: LFS
1611 fwrite_unlocked NEW: GNU ext.
1612 gai_strerror NEW: IPv6
1613 gamma_r REMOVED
1614 gammaf_r REMOVED
1615 gammal_r REMOVED
1616 getchar_locked REMOVED
1617 getdate NEW: Unix98
1618 getdate_err NEW: Unix98
1619 getdate_r NEW: GNU ext.
1620 getmsg NEW: STREAMS
1621 getnameinfo NEW: IPv6
1622 getnetname NEW: Secure RPC
1623 getpmsg NEW: STREAMS
1624 getpt NEW: Unix98 PTY
1625 getrlimit64 NEW: LFS
1626 getutxent NEW: Unix98
1627 getutxid NEW: Unix98
1628 getutxline NEW: Unix98
1629 glob64 NEW: GNU ext.
1630 globfree64 NEW: GNU ext.
1631 gnu_get_libc_release NEW: GNU ext.
1632 gnu_get_libc_version NEW: GNU ext.
1633 grantpt NEW: Unix98 PTY
1634 host2netname NEW: Secure RPC
1635 iconv NEW: iconv
1636 iconv_close NEW: iconv
1637 iconv_open NEW: iconv
1638 if_freenameindex NEW: IPv6
1639 if_indextoname NEW: IPv6
1640 if_nameindex NEW: IPv6
1641 if_nametoindex NEW: IPv6
1642 in6addr_any NEW: IPv6
1643 in6addr_loopback NEW: IPv6
1644 inet6_isipv4mapped NEW: IPv6
1645 isastream NEW: STREAMS
1646 iswblank NEW: GNU ext.
1647 key_decryptsession NEW: Secure RPC
1648 key_decryptsession_pk NEW: Secure RPC
1649 key_encryptsession NEW: Secure RPC
1650 key_encryptsession_pk NEW: Secure RPC
1651 key_gendes NEW: Secure RPC
1652 key_get_conv NEW: Secure RPC
1653 key_secretkey_is_set NEW: Secure RPC
1654 key_setnet NEW: Secure RPC
1655 key_setsecret NEW: Secure RPC
1656 llrint NEW: ISO C 9x
1657 llrintf NEW: ISO C 9x
1658 llrintl NEW: ISO C 9x
1659 llround NEW: ISO C 9x
1660 llroundf NEW: ISO C 9x
1661 llroundl NEW: ISO C 9x
1662 log2 NEW: ISO C 9x
1663 log2f NEW: ISO C 9x
1664 log2l NEW: ISO C 9x
1665 lrint NEW: ISO C 9x
1666 lrintf NEW: ISO C 9x
1667 lrintl NEW: ISO C 9x
1668 lround NEW: ISO C 9x
1669 lroundf NEW: ISO C 9x
1670 lroundl NEW: ISO C 9x
1671 lseek64 NEW: LFS
1672 makecontext NEW: Unix98
1673 mempcpy NEW: GNU ext.
1674 mmap64 NEW: LFS
1675 moncontrol REMOVED
1676 modify_ldt NEW: kernel
1677 nan NEW: ISO C 9x
1678 nanf NEW: ISO C 9x
1679 nanl NEW: ISO C 9x
1680 nearbyint NEW: ISO C 9x
1681 nearbyintf NEW: ISO C 9x
1682 nearbyintl NEW: ISO C 9x
1683 netname2host NEW: Secure RPC
1684 netname2user NEW: Secure RPC
1685 nexttoward NEW: ISO C 9x
1686 nexttowardf NEW: ISO C 9x
1687 nexttowardl NEW: ISO C 9x
1688 nftw NEW: Unix98
1689 nftw64 NEW: LFS
1690 open64 NEW: LFS
1691 passwd2des NEW: Secure RPC
1692 pow10 NEW: GNU ext.
1693 pow10f NEW: GNU ext.
1694 pow10l NEW: GNU ext.
1695 pread NEW: Unix98
1696 pread64 NEW: LFS
1697 printf_size NEW: GNU ext.
1698 printf_size_info NEW: GNU ext.
1699 profil_counter REMOVED
1700 pthread_mutexattr_getkind_np REPLACED
1701 pthread_mutexattr_setkind_np REPLACED
1702 ptsname NEW: Unix98 PTY
1703 ptsname_r NEW: Unix98 PTY
1704 putc_locked REMOVED
1705 putchar_locked REMOVED
1706 putgrent NEW: GNU ext.
1707 putmsg NEW: STREAMS
1708 putpmsg NEW: STREAMS
1709 pututxline NEW: Unix98
1710 pwrite NEW: Unix98
1711 pwrite64 NEW: LFS
1712 readdir64 NEW: LFS
1713 readdir64_r NEW: LFS
1714 remquo NEW: ISO C 9x
1715 remquof NEW: ISO C 9x
1716 remquol NEW: ISO C 9x
1717 round NEW: ISO C 9x
1718 roundf NEW: ISO C 9x
1719 roundl NEW: ISO C 9x
1720 rtime NEW: GNU ext.
1721 scalbln NEW: ISO C 9x
1722 scalblnf NEW: ISO C 9x
1723 scalblnl NEW: ISO C 9x
1724 scandir64 NEW: LFS
1725 sendfile NEW: kernel
1726 setcontext NEW: Unix98
1727 setrlimit64 NEW: LFS
1728 setutxent NEW: Unix98
1729 sighold NEW: Unix98
1730 sigignore NEW: Unix98
1731 sigqueue NEW: POSIX.1b
1732 sigrelse NEW: Unix98
1733 sigset NEW: POSIX.1b
1734 sigtimedwait NEW: POSIX.1b
1735 sigwaitinfo NEW: POSIX.1b
1736 sincos NEW: GNU ext.
1737 sincosf NEW: GNU ext.
1738 sincosl NEW: GNU ext.
1739 statfs64 NEW: LFS
1740 statvfs NEW: Unix98
1741 statvfs64 NEW: LFS
1742 strcasestr NEW: GNU ext.
1743 strtoimax NEW: ISO C 9x
1744 strtoumax NEW: ISO C 9x
1745 strverscmp NEW: GNU ext.
1746 svcauthdes_stats NEW: Secure RPC
1747 svcunix_create NEW: sunrpc etx
1748 svcunixfd_create NEW: sunrpc ext
1749 swapcontext NEW: Unix98
1750 tcgetsid NEW: Unix98 PTY
1751 tdestroy NEW: GNU ext.
1752 tgamma NEW: ISO C 9x
1753 tgammaf NEW: ISO C 9x
1754 tgammal NEW: ISO C 9x
1755 tmpfile64 NEW: LFS
1756 trunc NEW: ISO C 9x
1757 truncate64 NEW: LFS
1758 truncf NEW: ISO C 9x
1759 truncl NEW: ISO C 9x
1760 umount2 NEW: kernel
1761 unlockpt NEW: Unix98 PTY
1762 updwtmpx NEW: Unix98
1763 user2netname NEW: Secure RPC
1764 utmpxname NEW: Unix98
1765 versionsort NEW: GNU ext.
1766 versionsort64 NEW: GNU ext.
1767 waitid NEW: Unix98
1768 wcscasecmp NEW: GNU ext.
1769 wcsncasecmp NEW: GNU ext.
1770 wcsnlen NEW: GNU ext.
1771 wcstoimax NEW: ISO C 9x
1772 wcstoll NEW: ISO C 9x
1773 wcstoull NEW: ISO C 9x
1774 wcstoumax NEW: ISO C 9x
1775 wcswcs NEW: Unix98
1776 wordexp NEW: POSIX.2
1777 wordfree NEW: POSIX.2
1778 write_profiling REMOVED
1779 xdecrypt NEW: Secure RPC
1780 xdr_authdes_cred NEW: Secure RPC
1781 xdr_authdes_verf NEW: Secure RPC
1782 xdr_cryptkeyarg NEW: Secure RPC
1783 xdr_cryptkeyarg2 NEW: Secure RPC
1784 xdr_cryptkeyres NEW: Secure RPC
1785 xdr_getcredres NEW: Secure RPC
1786 xdr_key_netstarg NEW: Secure RPC
1787 xdr_key_netstres NEW: Secure RPC
1788 xdr_keybuf NEW: Secure RPC
1789 xdr_keystatus NEW: Secure RPC
1790 xdr_netnamestr NEW: Secure RPC
1791 xdr_sizeof NEW: Secure RPC
1792 xdr_unixcred NEW: sunrpc ext
1793 xencrypt NEW: Secure RPC
1794 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1795 \f
1796 Version 2.0.6
1798 * more bug fixes
1800 \f
1801 Version 2.0.5
1803 * more bug fixes
1805 * inet_ntoa is thread-safe
1807 * updwtmp is moved from libutil to libc
1809 * rewrite of cbrt function
1811 * update of timezone data
1812 \f
1813 Version 2.0.4
1815 * more bug fixes
1816 \f
1817 Version 2.0.3
1819 * more bug fixes
1820 \f
1821 Version 2.0.2
1823 * more bug fixes
1825 * add atoll function
1827 * fix complex problems in Berkeley DB code
1829 * fix math functions
1830 \f
1831 Version 2.0.1
1833 * fixed lots of header problems (especially Linux/GNU specific)
1835 * dynamic loader preserves all registers
1837 * Roland McGrath provided support for handling of auxiliary objects in
1838 the ELF dynamic loader.
1840 * support for parallel builds is improved
1841 \f
1842 Version 2.0
1844 * GNU extensions are no longer declared by default. To enable them you
1845 must define the macro `_GNU_SOURCE' in your program or compile with
1846 `-D_GNU_SOURCE'.
1848 * The library has changed from using GNU ld symbol aliases to using weak
1849 symbols where available. The ELF object file format supports weak
1850 symbols; GNU ld also supports weak symbols in the a.out format. (There
1851 is also now support for other GNU ld extensions in ELF. Use the
1852 `--with-elf' option to configure to indicate you have ELF, and
1853 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1854 of many files which contained only symbol aliases, reducing the size of
1855 the source and the compiled library; many other files were renamed to
1856 less cryptic names previously occupied by the symbol alias files.
1857 There is a new header file <elf.h> for programs which operate on
1858 files in the ELF format.
1860 * Converted to Autoconf version 2, so `configure' has more options.
1861 Run `configure --help' to see the details.
1863 * The library can now be configured to build profiling, highly-optimized
1864 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1865 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1866 `configure' enable building these extra libraries. The shared library is
1867 built by default when using both ELF and GNU ld. When shared libraries
1868 are enabled, the new library `-ldl' is available for arbitrary run-time
1869 loading of shared objects; its interface is defined in <dlfcn.h>. The
1870 new header file <link.h> gives access to the internals of the run-time
1871 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1872 application of same name on other systems and it provides information
1873 about dynamically linked binaries.
1875 * The C library now provides the run-time support code for profiling
1876 executables compiled with `-pg'. Programs can control the profiling code
1877 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1878 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1879 the support for this file format was contributed by David Mosberger-Tang.
1881 * The math code has been replaced with a math library based on fdlibm from
1882 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1883 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1884 functions. The math functions now reside in a separate library, so
1885 programs using them will need to use `-lm' their linking commands.
1887 * John C. Bowman contributed optimized ix87 assembler inline functions.
1889 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1890 mechanism similar to that found in Solaris 2. This is now used for the
1891 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1892 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1893 file controls what services are used for each individual database. This
1894 works by loading shared libraries with names specified in `nsswitch.conf',
1895 so service modules can be changed or added at any time without even
1896 relinking any program. Currently there are the file, db, and NIS based
1897 NSS services available.
1899 * The new functions `strtoq' and `strtouq' parse integer values from
1900 strings, like `strtol' and `strtoul', but they return `long long int' and
1901 `unsigned long long int' values, respectively (64-bit quantities).
1903 * The new functions `strtof' and `strtold' parse floating-point values from
1904 strings, like `strtod', but they return `float' and `long double' values,
1905 respectively (on some machines `double' and `long double' are the same).
1907 * Ulrich Drepper has contributed new implementations of the floating-point
1908 printing and reading code used in the `printf' family of functions and
1909 `strtod', `strtof', and `strtold'. These new functions are perfectly
1910 accurate, and much faster than the old ones.
1912 * The implementation of the POSIX locale model was completely rewritten by
1913 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1914 to compile the POSIX locale definition.
1916 * The former dummy implementations of the strcoll and strxfrm function are
1917 now replaced by fully functional code contributed by Ulrich Drepper. The
1918 collation information comes from the POSIX locale definitions.
1920 * The new header <langinfo.h> defines an interface for accessing
1921 various locale-dependent data (using the locale chosen with `setlocale').
1923 * Ulrich Drepper has contributed a new suite of functions for operation on
1924 wide-character and multibyte-character strings, in <wchar.h>;
1925 and classification and case conversion of wide characters, in <wctype.h>.
1926 These new functions are conforming to the ISO C, Amendement 1 specification.
1928 * There is now a second implementation of the standard I/O library available.
1929 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1930 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1932 * You can now use positional parameter specifications in format strings
1933 for the `printf' and `scanf' families of functions. For example,
1934 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1935 ``Number 6, Mr Jones''. This is mainly useful when providing different
1936 format strings for different languages, whose grammars may dictate
1937 different orderings of the values being printed. To support this
1938 feature, the interface for `register_printf_handler' has changed; see
1939 the header file <printf.h> for details.
1941 * The `printf' and `scanf' families of functions now understand a new
1942 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1943 to group numbers as indicated by the locale; for `scanf' and friends, this
1944 says to accept as valid only a number with all the proper grouping
1945 separators in the right places. In the default "C" locale, numbers are
1946 not grouped; but locales for specific countries will define the usual
1947 conventions (i.e. separate thousands with `,' in the US locale).
1949 * The pgrp functions have been regularized, slightly incompatibly but much
1950 less confusingly. The core functions are now `getpgid' and `setpgid',
1951 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1952 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1953 provided for compatibility. There is no longer an incompatible `getpgrp'
1954 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1956 * The new header file <fts.h> and suite of functions simplify programs that
1957 operate on directory trees. This code comes from 4.4 BSD.
1959 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1960 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1961 NSS scheme used in glibc.
1963 * There is a new malloc debugging hook `__memalign_hook'.
1965 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1966 `unsigned int' in <sys/types.h>. These are for compatibility only and
1967 their use is discouraged.
1969 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1970 done differently, so that it works even without GNU ld.
1972 * New function `euidaccess' checks allowed access to a file like `access',
1973 but using the effective IDs instead of the real IDs.
1975 * The time zone data files have been updated for the latest and greatest
1976 local time conventions of the countries of the world.
1978 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1979 see <dirent.h>.
1981 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1982 for formatting floating-point numbers. They are provided only for
1983 compatibility; new programs should use `sprintf' instead. There are
1984 also equivalent function for the `long double' floating-point type and
1985 all functions also exist in a reentrant form.
1987 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1988 functions for maintaining the login-record files (primarily of use to
1989 system programs such as `login'), and convenient functions for
1990 allocating and initializing a pseudo-terminal (pty) device.
1992 * Ulrich Drepper has contributed new support for System V style
1993 shared memory and IPC on systems that support it.
1995 * Ulrich Drepper has contributed several miscellaneous new functions found
1996 in System V: The `hsearch' family of functions provide an effective
1997 implementation of hash tables; `a64l' and `l64a' provide a very simple
1998 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1999 number generator.
2001 * Ulrich Drepper has contributed new reentrant counterparts for the
2002 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2004 * Ulrich Drepper has contributed new, highly-optimized versions of several
2005 string functions for the i486/Pentium family of processors.
2007 * Ulrich Drepper has updated the Linux-specific code, based largely
2008 on work done in Hongjiu Lu's version of GNU libc for Linux.
2009 The GNU library now supports Linux versions 2.0.10 and later,
2010 using the ELF object file format (i[3456]86-*-linux).
2012 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2014 * David Mosberger-Tang and Richard Henderson have ported the C library
2015 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2016 dynamic linking support for ELF/Alpha.
2018 * Richard Henderson contributed several Alpha optimized assembler function
2019 for arithmetic and string handling.
2021 * Ulrich Drepper has contributed a new set of message catalog functions to
2022 support multiple languages using the <libintl.h> interface, for use with
2023 his new package GNU gettext. Translation volunteers have contributed
2024 catalogs of the library's messages in Spanish, German, and Korean.
2026 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2027 program and the `catgets' function for reading the catalog files it
2028 creates. (The <libintl.h> interface is preferred; we include the
2029 <nl_types.h> interface using `catgets' only for source compatibility with
2030 programs already written to use it.)
2032 * New header file <values.h> gives SVID-compatible names for <limits.h>
2033 constants.
2035 * Various new macros, declarations, and small header files for compatibility
2036 with 4.4 BSD.
2038 * New function `group_member' is a convenient way to check if a process has
2039 a given effective group ID.
2041 * When using GCC 2.7 and later, the socket functions are now declared in a
2042 special way so that passing an argument of type `struct sockaddr_in *',
2043 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2044 `struct sockaddr *' type, does not generate a type-clash warning.
2046 * New function `error' declared in header file <error.h> is a convenient
2047 function for printing error messages and optionally exiting; this is the
2048 canonical function used in GNU programs. The new functions `err', `warn',
2049 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2050 doing the same thing.
2052 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2053 POSIX.2 `glob' function to do ~ and {...} expansion.
2055 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2056 `clearenv' which is used in POSIX.9 is also available.
2058 * New function `getsid' returns session ID number on systems that support it.
2060 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2061 files <db.h> and <mpool.h> provide a rich set of functions for several
2062 types of simple databases stored in memory and in files, and <ndbm.h> is
2063 an old `ndbm'-compatible interface using the `db' functions. Link with
2064 `-ldb' to get these functions.
2066 * New macro `strdupa' copies a string like `strdup', but uses local stack
2067 space from `alloca' instead of dynamic heap space from `malloc'.
2069 * New function `strnlen' is like `strlen' but searches only a given maximum
2070 number of characters for the null terminator. `stpncpy', `strndup' and
2071 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2072 function.
2074 * New function `statfs' in header <sys/statfs.h>.
2076 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2077 provide convenient functions for operating on blocks of null-terminated
2078 strings.
2080 * A new suite of functions in <utmp.h> handle all the details of reading
2081 and writing the utmp file.
2083 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2084 Thorsten Kukuk.
2086 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2087 completely POSIX compliant and also implemented the extended functionality
2088 to handle alternate digit representation and alternate era date formats.
2090 * Ulrich Drepper provided an implementation of the `strptime' function
2091 defined in XPG4.2 which transforms a string into a `struct tm' value.
2093 * Paul Eggert provided the tzselect shell script as part of the timezone
2094 code. The shell script makes it easy to select the correct timezone
2095 specification.
2097 * The implementation of the malloc family of functions is completely replaced
2098 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2099 The implementation uses the mmap function (if available) and it is
2100 optimized for the use in multi threaded programs.
2102 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2103 functions. This new functionality is usable by specifying a special
2104 salt string and it is compatible with implementation on *BSD systems.
2106 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2107 `getsubopt' to handle second level command line options, `bsd_signal'
2108 to access BSD style `signal' functionality, the obsolete `regexp' style
2109 expression matcher.
2111 * the `lchown' function is available on system which support this
2112 functionality.
2114 * The implementation of the shadow password handling function was contributed
2115 by Ulrich Drepper.
2117 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2119 * POSIX.1g support was added. The <sys/select.h> header is available,
2120 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2121 implementation of `getaddrinfo'.
2122 \f
2123 Version 1.09
2125 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2127 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2128 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2130 * The new function `daemon' from 4.4 BSD is useful for server programs that
2131 want to put themselves in the background.
2133 * Joel Sherrill has contributed support for several standalone boards that
2134 run without an operating system.
2136 * `printf', `scanf' and friends now accept a `q' type modifier for long
2137 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2139 * All of the code taken from BSD (notably most of the math and networking
2140 routines) has been updated from the BSD 4.4-Lite release.
2142 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2144 * The new functions `getdomainname' and `setdomainname' fetch or change the
2145 YP/NIS domain name. These are system calls which exist on systems which
2146 have YP (aka NIS).
2148 * The time zone data files have been updated for the latest international
2149 conventions.
2151 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2152 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2153 \f
2154 Version 1.08
2156 * The C library now includes support for Sun RPC, from Sun's free
2157 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2158 are included. (There is still no support for YP.)
2160 * Tom Quinn has contributed a port of the C library to SGI machines running
2161 Irix 4 (mips-sgi-irix4).
2163 * The new `lockf' function is a simplified interface to the locking
2164 facilities of `fcntl', included for compatibility.
2166 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2168 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2170 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2171 compatibility.
2173 * The error message printed by `assert' for a failed assertion now includes
2174 the name of the program (if using GNU ld) and the name of the calling
2175 function (with versions of GCC that support this).
2177 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2179 * The library now includes the <sys/mman.h> header file and memory
2180 management functions `mmap', `munmap', `mprotect', `msync', and
2181 `madvise', on systems that support those facilities.
2183 * The interface for `mcheck' has changed slightly: the function called to
2184 abort the program when an allocation inconsistency is detected now takes
2185 an argument that indicates the type of failure. The new function
2186 `mprobe' lets you request a consistency check for a particular block at
2187 any time (checks are normally done only when you call `free' or `realloc'
2188 on a block).
2190 * It is now possible to easily cross-compile the C library, building on one
2191 system a library to run on another machine and/or operating system. All
2192 you need to do is set the variable `HOST_CC' in `configparms' to the
2193 native compiler for programs to run on the machine you are building on (a
2194 few generator programs are used on Unix systems); set `CC' to the
2195 cross-compiler.
2197 * The new function `fexecve' (only implemented on the GNU system) executes
2198 a program file given a file descriptor already open on the file.
2199 \f
2200 Version 1.07
2202 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2203 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2205 * You can set the variable `libprefix' in `configparms' to specify a prefix
2206 to be prepended to installed library files; this makes it easy to install
2207 the GNU C library to be linked as `-lgnuc' or whatever.
2209 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2210 copies a limited number of characters from a string, and returns the
2211 address of the last character written.
2213 * You no longer need to check for whether the installed `stddef.h' is
2214 compatible with the GNU C library. configure now checks for you.
2216 * You can now define a per-stream `fileno' function to convert the
2217 stream's cookie into an integral file descriptor.
2219 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2220 allocates zero bytes of storage, and returns a unique pointer which
2221 you can pass to `realloc' or `free'. The behavior is undefined if
2222 you dereference this pointer.
2224 * The C library now runs on Sony NEWS m68k machines running either
2225 NewsOS 3 or NewsOS 4.
2227 * The new `syscall' function is a system-dependent primitive function
2228 for invoking system calls. It has the canonical behavior on Unix
2229 systems, including unreliable return values for some calls (such as
2230 `pipe', `fork' and `getppid').
2232 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2233 to `EAGAIN', which is the preferred name. On systems whose kernels
2234 use two distinct codes, the C library now translates EWOULDBLOCK to
2235 EAGAIN in every system call function.
2236 \f
2237 Version 1.06
2239 * The GNU C Library Reference Manual is now distributed with the library.
2240 `make dvi' will produce a DVI file of the printed manual.
2241 `make info' will produce Info files that you can read on line using C-h i
2242 in Emacs or the `info' program.
2243 Please send comments on the manual to bug-glibc-manual@gnu.org.
2245 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2247 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2249 * Jason Merrill has contributed a port to the Sequent Symmetry running
2250 Dynix version 3 (i386-sequent-dynix).
2252 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2253 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2255 * New function `memory_warnings' lets you arrange to get warnings when
2256 malloc is running out of memory to allocate, like Emacs gives you.
2258 * The C library now contains the relocating allocator used in Emacs 19 for
2259 its editing buffers. This allocator (ralloc) minimizes allocation
2260 overhead and fragmentation by moving allocated regions around whenever it
2261 needs to. You always refer to a ralloc'd region with a "handle" (a
2262 pointer to a pointer--an object of type `void **').
2264 * There is a new `printf' format: `%m' gives you the string corresponding
2265 to the error code in `errno'.
2267 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2268 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2269 pass, the `a' modifier says to fill in a `char **' you pass with a
2270 malloc'd string.
2272 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2273 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2274 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2276 * `mkstemp' is a traditional Unix function to atomically create and open a
2277 uniquely-named temporary file.
2278 \f
2279 Version 1.05
2281 * The standard location for the file that says what the local timezone is
2282 has changed again. It is now `/usr/local/etc/localtime' (or more
2283 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2285 * The distribution no longer contains any files with names longer than 14
2286 characters.
2288 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2289 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2291 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2292 \f
2293 Version 1.04
2295 * The configuration process has changed quite a bit. The `configure'
2296 script is now used just like the configuration scripts for other GNU
2297 packages. The `sysdeps' directory hierarchy is much rearranged.
2298 The file `INSTALL' explains the new scheme in detail.
2300 * The header files no longer need to be processed into ANSI C and
2301 traditional C versions. There is just one set of files to install, and
2302 it will work with ANSI or old C compilers (including `gcc -traditional').
2304 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2305 MIPS DECStation running Ultrix 4.
2307 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2308 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2309 made itself into a shared library.
2311 * Yet further improved support for the i386, running 4.3 BSD-like systems
2312 (such as Mach 3 with the Unix single-server), or System V.
2314 * New function `strncasecmp' to do case-insensitive string comparison
2315 with limited length.
2317 * New function `strsep' is a reentrant alternative to `strtok'.
2319 * New functions `scandir' and `alphasort' for searching directories.
2321 * New function `setenv' is a better interface to `putenv'.
2323 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2324 function for traversing a directory tree.
2326 * The GNU obstack package is now also part of the C library.
2327 The new function `open_obstack_stream' creates a stdio stream that
2328 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2329 formatted output directly to an obstack.
2331 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2332 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2334 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2336 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2337 things to your strings.
2339 * There are some new test programs: test-fseek, testmb, and testrand.
2341 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2342 These ports are not finished, but are a good starting place for really
2343 supporting those systems.
2345 * `/etc/localtime' is now the standard location for the file that says what
2346 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2347 This follows the general principle that `/etc' is the place for all local
2348 configuration files.
2350 * The C library header files now use `extern "C"' when used by the C++
2351 compiler, so the C library should now work with C++ code.
2353 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2354 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2355 in <strings.h>.)
2357 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2358 function which uses the `merge sort' algorithm, and is said to be
2359 significantly faster than the old GNU `qsort' function. Merge sort is
2360 now the standard `qsort' function. The new algorithm can require a lot
2361 of temporary storage; so, the old sorting function is called when the
2362 required storage is not available.
2364 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2365 provides the Unix `crypt' function, plus some other entry points.
2367 * The code and header files taken from 4.4 BSD have been updated with the
2368 latest files released from Berkeley.
2369 \f
2370 ----------------------------------------------------------------------
2371 Copyright information:
2373 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2375 Permission is granted to anyone to make or distribute verbatim copies
2376 of this document as received, in any medium, provided that the
2377 copyright notice and this permission notice are preserved,
2378 thus giving the recipient permission to redistribute in turn.
2380 Permission is granted to distribute modified versions
2381 of this document, or of portions of it,
2382 under the above conditions, provided also that they
2383 carry prominent notices stating who last changed them.
2384 \f
2385 Local variables:
2386 version-control: never
2387 fill-column: 76
2388 End: