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1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
7 \f
8 Version 2.20
10 * The following bugs are resolved with this release:
12 6804, 13347, 15347, 15514, 15804, 15894, 16002, 16198, 16284, 16348,
13 16349, 16357, 16362, 16447, 16532, 16545, 16574, 16599, 16600, 16609,
14 16610, 16611, 16613, 16623, 16632, 16634, 16639, 16642, 16648, 16649,
15 16670, 16674, 16677, 16680, 16683, 16689, 16695, 16701, 16706, 16707,
16 16712, 16713, 16714, 16731, 16739, 16743, 16758, 16759, 16760, 16770,
17 16786, 16789, 16799, 16800, 16815.
19 * Running the testsuite no longer terminates as soon as a test fails.
20 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
21 with PASS or FAIL lines for individual tests. A summary of the results is
22 printed, including a list of failing lists, and "make check" exits with
23 error status if there were any unexpected failures. "make check
24 stop-on-test-failure=y" may be used to keep the old behavior.
26 * The am33 port, which had not worked for several years, has been removed
27 from ports.
29 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
30 supported; they now act the same as _DEFAULT_SOURCE (but generate a
31 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
32 conflicted with POSIX (support for which was removed in 2.19), the
33 interfaces those macros enabled remain available when compiling with
34 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
35 test macros defined.
36 \f
37 Version 2.19
39 * The following bugs are resolved with this release:
41 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
42 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
43 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
44 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
45 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
46 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
47 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
48 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
49 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
50 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
51 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
52 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
53 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
54 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
55 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
56 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
57 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
58 16431, 16453, 16474, 16506, 16510, 16529
60 * Slovenian translations for glibc messages have been contributed by the
61 Translation Project's Slovenian team of translators.
63 * The public headers no longer use __unused nor __block. This change is to
64 support compiling programs that are derived from BSD sources and use
65 __unused internally, and to support compiling with Clang's -fblock
66 extension which uses __block.
68 * CVE-2012-4412 The strcoll implementation caches indices and rules for
69 large collation sequences to optimize multiple passes. This cache
70 computation may overflow for large collation sequences and may cause a
71 stack or buffer overflow. This is now fixed to use a slower algorithm
72 which does not use a cache if there is an integer overflow.
74 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
75 rules for large collation sequences to optimize multiple passes and falls
76 back to alloca if malloc fails, resulting in a possible stack overflow.
77 The implementation now falls back to an uncached collation sequence lookup
78 if malloc fails.
80 * CVE-2013-4788 The pointer guard used for pointer mangling was not
81 initialized for static applications resulting in the security feature
82 being disabled. The pointer guard is now correctly initialized to a
83 random value for static applications. Existing static applications need
84 to be recompiled to take advantage of the fix (bug 15754).
86 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
87 to the d_name member of struct dirent, or omit the terminating NUL
88 character. (Bugzilla #14699).
90 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
91 aligned_alloc functions could allocate too few bytes or corrupt the
92 heap when passed very large allocation size values (Bugzilla #15855,
93 #15856, #15857).
95 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
96 for AF_INET6 has been fixed (Bugzilla #16072).
98 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
99 pap_CW, quz_PE, the_NP.
101 * Substantially revised locales: gd_GB, ht_HT
103 * The LC_ADDRESS field was updated to support country_car for almost all
104 supported locales.
106 * ISO 1427 definitions were updated.
108 * ISO 3166 definitions were updated.
110 * The localedef utility now supports --big-endian and --little-endian
111 command-line options to generate locales for a different system from that
112 for which the C library was built.
114 * Binary locale files now only depend on the endianness of the system for
115 which they are generated and not on other properties of that system. As a
116 consequence, binary files generated with new localedef may be incompatible
117 with old versions of the GNU C Library, and binary files generated with
118 old localedef may be incompatible with this version of the GNU C Library,
119 in the following circumstances:
121 + Locale files may be incompatible on m68k systems.
123 + Locale archive files (but not separate files for individual locales) may
124 be incompatible on systems where plain "char" is signed.
126 * The configure option --disable-versioning has been removed. Builds with
127 --disable-versioning had not worked for several years.
129 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
130 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
132 * SystemTap probes for malloc have been introduced.
134 * SystemTap probes for slow multiple precision fallback paths of
135 transcendental functions have been introduced.
137 * Support for powerpc64le has been added.
139 * The soft-float powerpc port now supports e500 processors.
141 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
143 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
144 set of header declarations that are enabled by default, even when other
145 feature test macros or compiler options such as -std=c99 would otherwise
146 disable some of those declarations.
148 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
149 conflict with POSIX. The libbsd-compat library (which was a dummy library
150 that did nothing) has also been removed.
152 * Preliminary documentation about Multi-Thread, Async-Signal and
153 Async-Cancel Safety has been added.
155 * Change of ABI data structures for s390 and s390x:
156 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
157 allow for future hardware extensions. All library functions that accept or
158 return these structures were versioned in order to provide backwards
159 compatibility with existing code. However, not all cases can be handled
160 with interface versioning. If an application embeds either structure into
161 another structure and that structure is passed to another compilation unit
162 which expects the newer larger-sized object then any access to the new
163 fields will result in undefined behaviour. Similarly any access to fields
164 that were moved by the enlarging of the structures will cause undefined
165 behaviour. To fix the undefined behaviour all objects that are part of the
166 final in-memory image must agree on the size of structures, and this may
167 require recompilation.
168 \f
169 Version 2.18
171 * The following bugs are resolved with this release:
173 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
174 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
175 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
176 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
177 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
178 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
179 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
180 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
181 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
182 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
183 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
184 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
185 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
186 15759.
188 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
189 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
190 Distributions can re-enable building and using pt_chown via the new configure
191 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
192 considerable security risks and should only be used if the distribution
193 understands and accepts the risks.
195 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
196 #15078).
198 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
199 fixed (Bugzilla #15330).
201 * Add support for calling C++11 thread_local object destructors on thread
202 and program exit. This needs compiler support for offloading C++11
203 destructor calls to glibc.
205 * Improved worst case performance of libm functions with double inputs and
206 output.
208 * Support for priority inherited mutexes in pthread condition variables on
209 non-x86 architectures.
211 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
213 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
215 * Optimized string functions for ARM. Implemented by Will Newton and
216 Richard Henderson.
218 * Optimized libm functions for SPARC. Implemented by David S. Miller.
220 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
221 Richard Henderson.
223 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
224 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
226 * Added a benchmark framework to track performance of functions in glibc.
228 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
229 It is based on draft TS 18661 and currently enabled as a GNU extension.
231 * On Linux, the clock function now uses the clock_gettime system call
232 for improved precision, rather than old times system call.
234 * Added support for version-3 tz format files. This is needed when using
235 the tz database release 2013e or later, and affects a few unusual cases --
236 currently only TZ='America/Godthab' for time stamps after 2037.
238 * Added new API functions pthread_getattr_default_np and
239 pthread_setattr_default_np to get and set the default pthread
240 attributes of a process.
242 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
243 This may improve lock scaling of existing programs on TSX capable systems.
244 When the --enable-lock-elision=yes parameter is specified at configure
245 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
246 mutexes.
248 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
249 availability). Implemented by Ryan S. Arnold.
251 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
252 \f
253 Version 2.17
255 * The following bugs are resolved with this release:
257 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
258 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
259 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
260 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
261 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
262 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
263 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
264 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
265 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
266 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
267 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
268 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
269 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
270 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
271 14879, 14889, 14893, 14898, 14914.
273 * Optimization of memcpy for MIPS.
275 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
276 EMFILE has been fixed (Bugzilla #14889).
278 * The add-on ports collection is now distributed in the "ports" subdirectory
279 of the main GNU C Library distribution, rather than separately.
281 * Port to ARM AArch64 contributed by Linaro.
283 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
284 Optimized versions of memcpy, memset, and memcmp added for System z10 and
285 zEnterprise z196.
286 Implemented by Andreas Krebbel.
288 * The new function secure_getenv allows secure access to the environment,
289 returning NULL if running in a SUID/SGID process. This function replaces
290 the internal function __secure_getenv.
292 * SystemTap static probes have been added into the dynamic linker.
293 Implemented by Gary Benson.
295 * Optimizations of string functions strstr, strcasestr and memmem.
296 Implemented by Maxim Kuvyrkov.
298 * The minimum Linux kernel version that this version of the GNU C Library
299 can be used with is 2.6.16.
301 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
302 powerpc POWER7. Implemented by Will Schmidt.
304 * New configure option --disable-nscd builds the C library such that it
305 never attempts to contact the Name Service Caching Daemon (nscd).
306 New configure option --disable-build-nscd avoids building nscd itself;
307 this is the default if --disable-nscd is used.
309 * Improved support for cross-compilation, including cross-testing and
310 bootstrap builds without a previously built glibc.
312 * Several testsuite tests are now able to test multiple IFUNC variants of an
313 interface, rather than just testing the one that would be chooen by
314 default.
316 * New configure options --with-bugurl and --with-pkgversion, for
317 distributors to use to embed their bug-reporting and package version
318 information in --help and --version output.
320 * The ttyname and ttyname_r functions on Linux now fall back to searching for
321 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
322 allows creation of chroots without the procfs mounted on /proc.
324 * The `crypt' function now fails if passed salt bytes that violate the
325 specification for those values. On Linux, the `crypt' function will
326 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
327 enabled, and fail on encrypted strings using the MD5 or DES algorithm
328 when the mode is enabled.
330 * The `clock_*' suite of functions (declared in <time.h>) is now available
331 directly in the main C library. Previously it was necessary to link with
332 -lrt to use these functions. This change has the effect that a
333 single-threaded program that uses a function such as `clock_gettime' (and
334 is not linked with -lrt) will no longer implicitly load the pthreads
335 library at runtime and so will not suffer the overheads associated with
336 multi-thread support in other code such as the C++ runtime library.
338 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
339 sat_IN, and szl_PL.
340 \f
341 Version 2.16
343 * The following bugs are resolved with this release:
345 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
346 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
347 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
348 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
349 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
350 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
351 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
352 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
353 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
354 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
355 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
356 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
357 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
358 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
359 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
360 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
361 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
362 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
363 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
364 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
365 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
366 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
367 14277, 14278.
369 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
370 configuring glibc with:
371 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
372 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
373 Implemented by H.J. Lu.
375 * ISO C11 support:
377 + define static_assert
379 + do not declare gets
381 + declare at_quick_exit and quick_exit also for ISO C11
383 + aligned_alloc. NB: The code is deliberately allows the size parameter
384 to not be a multiple of the alignment. This is a moronic requirement
385 in the standard but it is only a requirement on the caller, not the
386 implementation.
388 + timespec_get added
390 + uchar.h support added
392 + CMPLX, CMPLXF, CMPLXL added
394 Implemented by Ulrich Drepper.
396 * Support for the IA-64 has been moved to ports.
398 * Remove support for anything but ELF binary format
400 * Checking versions of poll, ppoll added.
401 Implemented by Ulrich Drepper.
403 * More generic and 64-bit performance optimizations to math functions.
404 Implemented by Ulrich Drepper.
406 * New configure option --enable-obsolete-rpc makes the deprecated RPC
407 headers and functions available at compile time as they were before
408 version 2.14. This option will be removed at some time in the future
409 after the TI-RPC library becomes fully sufficient for the needs of
410 existing applications.
412 * Compatibility code for Linux kernel versions before 2.4 has been removed.
413 Note that glibc is not expected to work with any Linux kernel version
414 before 2.6.
416 * New header <sys/auxv.h> and function getauxval allowing easy access to
417 the AT_* key-value pairs passed from the Linux kernel. The header also
418 defines the HWCAP_* bits associated with the AT_HWCAP key.
420 * New locales: mag_IN
422 * New configure option --enable-systemtap builds SystemTap static probes
423 into libc for setjmp and longjmp and into libpthread for various operations.
424 So far the setjmp/longjmp probes and some of the libpthread probes are
425 provided only for i*86 and x86_64.
426 Implemented by Roland McGrath and Rayson Ho.
428 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
430 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
431 and Will Schmidt.
433 * More optimized functions for SPARC. Implemented by David S. Miller.
435 * Improved support for cross-compilation, especially bootstrap builds
436 without a previously built glibc.
438 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
439 Chris Metcalf from Tilera.
441 * Support for the old ARM ABI has been removed from ports. Only the EABI is
442 now supported for ARM processors.
444 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
445 as the name of the dynamic linker, to distinguish it from the
446 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
448 * Support for CRIS has been removed from ports.
450 * A new class of installed header has been documented for low-level
451 platform-specific functionality. PowerPC added the first instance with a
452 function to provide time base register access. Contributed by Tulio
453 Magno Quites Machado Filho.
455 * ix86 configurations now install header files that are consistent with
456 what x86-64 configurations install. These same header files can be used
457 for -m32, -m64, or -mx32 builds.
458 Contributed by H.J. Lu.
460 * Math library bug fixes. A thorough audit of all open math library bugs was
461 conducted by Joseph Myers. Significant progress was made on many math
462 library bugs resulting in more accurate exceptions and function results.
463 Many thanks to all those that contributed including Andreas Jaeger for his
464 patch review and work on the x87 trigonometric instruction issues.
466 * Timezone data is no longer installed. Timezone-related binaries and scripts
467 will continue to be installed. Users should obtain their timezone data from
468 their distribution provider or from the tzdata package at
469 <ftp://munnari.oz.au/pub/>.
470 \f
471 Version 2.15
473 * The following bugs are resolved with this release:
475 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
476 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
477 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
478 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
479 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
480 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
481 13484, 13506, 13515, 13523, 13524, 13538, 13540
483 * New program pldd to list loaded object of a process
484 Implemented by Ulrich Drepper.
486 * Add nss_db support back to glibc. No more dependency on Berkeley db
487 and support for initgroups lookups.
488 Implemented by Ulrich Drepper.
490 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
491 Contributed by HJ Lu.
493 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
494 Contributed by HJ Lu.
496 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
497 on x86-32 and x86-64.
498 Contributed by Liubov Dmitrieva.
500 * Optimized strchr and strrchr for SSE on x86-32.
501 Contributed by Liubov Dmitrieva.
503 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
504 for x86-64 and x86-32.
505 Contributed by Liubov Dmitrieva.
507 * New interfaces: scandirat, scandirat64
508 Implemented by Ulrich Drepper.
510 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
511 Implemented by Ulrich Drepper.
513 * nscd now also caches the netgroup database.
514 Implemented by Ulrich Drepper.
516 * Integrate libm with gcc's -ffinite-math-only option.
517 Implemented by Ulrich Drepper.
519 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
520 to math functions. Implemented by Ulrich Drepper.
522 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
523 Implemented by Ulrich Drepper.
525 * New Linux interfaces: process_vm_readv, process_vm_writev
527 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
528 Implemented by Ulrich Drepper.
530 * Optimized nearbyint and strcasecmp for PPC.
531 Implemented by Adhemerval Zanella.
533 * New locales: bho_IN, unm_US, es_CU, ta_LK
534 \f
535 Version 2.14
537 * The following bugs are resolved with this release:
539 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
540 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
541 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
542 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
543 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
544 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
545 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
546 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
547 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
548 12795, 12811, 12813, 12814, 12841
550 * The RPC implementation in libc is obsoleted. Old programs keep working
551 but new programs cannot be linked with the routines in libc anymore.
552 Programs in need of RPC functionality must be linked against TI-RPC.
553 The TI-RPC implementation is IPv6 enabled and there are other benefits.
555 Visible changes of this change include (obviously) the inability to link
556 programs using RPC functions without referencing the TI-RPC library and the
557 removal of the RPC headers from the glibc headers.
558 Implemented by Ulrich Drepper.
560 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
561 syncfs, setns, sendmmsg
563 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
564 yue_HK, lij_IT, mhr_RU
566 * New encodings: CP770, CP771, CP772, CP773, CP774
568 * New program sotruss to trace calls through PLTs
569 Implemented by Ulrich Drepper.
571 * The malloc hook implementation is marked deprecated and will be removed
572 from the default implementation in the next version. The design never
573 worked ever since the introduction of threads. Even programs which do
574 not create threads themselves can use multiple threads created internally.
575 \f
576 Version 2.13
578 * The following bugs are resolved with this release:
580 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
581 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
582 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
583 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
584 12378, 12394, 12397
586 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
588 * POWER7 optimizations: memset, memcmp, strncmp
590 * New optimized string functions for x86-64: strnlen (SSE2),
591 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
592 Implemented by Ulrich Drepper.
593 \f
594 Version 2.12
596 * The following bugs are resolved with this release:
598 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
599 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
600 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
601 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
602 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
603 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
604 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
605 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
607 * New interfaces: pthread_getname_np, pthread_setname_np
609 * New Linux interface: recvmmsg
611 * STT_GNU_IFUNC implemented for Sparc by David Miller.
613 * The dynamic linker now recognizes supported ABI versions from the
614 EI_ABIVERSION field in the ELF header.
615 Implemented by Ulrich Drepper.
617 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
618 will not be used to fill in password fields in the passwd.byname replies.
619 Instead it is used to synthesize the shadow.byname table, should it be
620 missing. This is a useful mode in some installations involving Solaris.
621 Implemented by Ulrich Drepper.
623 * New locales: kok_IN, sq_MK, cv_RU
624 \f
625 Version 2.11
627 * The following bugs are resolved with this release:
629 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
630 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
631 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
632 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
633 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
634 10789, 10817, 10823, 10840, 10847
636 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
637 mkostemps64
638 Implemented by Ulrich Drepper.
640 * Checking version of longjmp added that fails if an uninitialized stack
641 frame would be created. Implemented by Ulrich Drepper.
643 * STT_GNU_IFUNC is now supported in static executables.
644 Implemented by H.J. Lu.
646 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
648 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
649 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
650 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
651 Contributed by H.J. Lu.
653 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
654 Implemented by Ulrich Drepper.
656 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
657 strstr, strcasestr.
658 Contributed by H.J. Lu.
660 * Support for fma instruction in AVX on x86-64.
661 Implemented by H.J. Lu and Ulrich Drepper.
663 * AVX support in x86-64 auditing support in ld.so.
664 Implemented by H.J. Lu.
666 * STB_GNU_UNIQUE support added.
667 Implemented by Ulrich Drepper.
669 * Implement second fallback mode for optimized DNS lookup for even more
670 broken environments. If two requests from the same port are not
671 handled correctly close the socket and open a new one before sending
672 the second request. The 'single-request-reopen' option in /etc/resolv.conf
673 can be used to select this mode right away, instead of rediscovering the
674 necessity is every process again.
675 Implemented by Ulrich Drepper.
677 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
678 Implemented by Adam Tkac.
680 * Optimized iconv conversions for S390x.
681 Implemented by Andreas Krebbel.
683 * Using condvars with PI mutexes is now more efficient due to kernel
684 support for requeueing to PI futexes. NPTL support added for x86-64.
685 Implemented by Ulrich Drepper.
687 * New locales: ps_AF, my_MM
688 \f
689 Version 2.10
691 * The following bugs are resolved with this release:
693 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
694 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
695 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
696 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
697 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
699 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
700 Implemented by Ulrich Drepper.
702 * New Linux interfaces: accept4, fallocate, fallocate64.
703 Implemented by Ulrich Drepper.
705 * Correct declarations of string function when used in C++ code. This
706 could lead to compile errors for invalid C++ code.
708 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
709 now in POSIX.
711 * New POSIX 2008 interface: psiginfo
712 Implemented by Ulrich Drepper.
714 * New ISO C++1x interfaces: quick_exit, at_quick_exit
715 Implemented by Ulrich Drepper.
717 * Support for selecting between multiple function definitions at runtime
718 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
720 * The libcrypt library can now use the hash function implementations in
721 NSS. Implemented by Ulrich Drepper.
723 * The malloc implementation can be compiled to be less memory efficient
724 but higher performing in multi-threaded programs.
725 Implemented by Ulrich Drepper.
727 * New locales: nan_TW@latin, ks_IN
729 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
730 Implemented by Ulrich Drepper.
732 * Extended printf hook support. It is possible to use user-defined types
733 and extend existing format specifiers.
734 Implemented by Ulrich Drepper.
736 * Handling for group shadow files has been added.
737 Implemented by Ulrich Drepper.
739 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
740 servers (the case, e.g., for some people using the built-in DNS
741 server in ADSL modems/routers). There is a once-per-process timeout
742 in case of a broken server. To avoid it, users can run nscd or put
743 'options single-request' in /etc/resolv.conf.
744 Implemented by Ulrich Drepper.
745 \f
746 Version 2.9
748 * The following bugs are resolved with this release:
750 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
751 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
752 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
753 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
754 6968, 6974, 6980, 6995, 7008, 7009, 7029
756 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
757 up at the same time. Implemented by Ulrich Drepper.
759 * TLS descriptors for LD and GD on x86 and x86-64.
760 Implemented by Alexandre Oliva.
762 * getaddrinfo now handles DCCP and UDPlite.
763 Implemented by Ulrich Drepper.
765 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
766 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
767 Implemented by Ulrich Drepper.
769 * New implementation of memmem, strstr, and strcasestr which is O(n).
770 Implemented by Eric Blake.
772 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
774 * Implement "e" option for popen to open file descriptor with the
775 close-on-exec flag set. Implemented by Ulrich Drepper.
777 * Implement "b" mode for fmemopen. In this mode writes writes don't
778 implicitly add a NUL byte and seeks from the end of the buffer really
779 use the buffer end, not the string length as the basis.
780 Implemented by Ulrich Drepper.
782 * Many functions, exported and internal, now atomically set the close-on-exec
783 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
785 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
786 Sinhala)
787 Implemented by Pravin Satpute.
789 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
790 \f
791 Version 2.8
793 * The following bugs are resolved with this release:
795 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
796 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
797 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
798 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
799 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
800 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
801 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
803 * New locales: bo_CN, bo_IN, shs_CA.
805 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
807 * Sorting rules for some Indian languages (Devanagari and Gujarati).
808 Implemented by Pravin Satpute.
810 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
812 * nscd caches now all timeouts for DNS entries
813 Implemented by Ulrich Drepper.
815 * nscd is more efficient and wakes up less often.
816 Implemented by Ulrich Drepper.
818 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
819 vdprintf, and obstack_vprintf.
820 Implemented by Jakub Jelinek.
822 * Faster memset for x86-64.
823 Implemented by Harsha Jagasia and H.J. Lu.
825 * Faster memcpy on x86.
826 Implemented by Ulrich Drepper.
828 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
829 Implemented by Ulrich Drepper.
831 * Faster sqrt and sqrtf implemention for some PPC variants.
832 Implemented by Steven Munroe.
833 \f
834 Version 2.7
836 * The following bugs are resolved with this release:
838 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
839 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
840 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
841 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
842 5071, 5103, 5104, 5112, 5113, 5184, 5186
844 * More checking functions: fread, fread_unlocked, open*, mq_open.
845 Implemented by Jakub Jelinek and Ulrich Drepper.
847 * Extend fortification to C++. Implemented by Jakub Jelinek.
849 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
850 by not recognizing 'a' as a modifier when those specs are requested.
851 Implemented by Jakub Jelinek.
853 * PPC optimizations to math and string functions.
854 Implemented by Steven Munroe.
856 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
857 options to be passed. Implemented by Ulrich Drepper.
859 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
861 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
862 Implemented by Ulrich Drepper.
864 * Handle private futexes in the NPTL implementation.
865 Implemented by Jakub Jelinek and Ulrich Drepper.
867 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
868 Implemented by Roland McGrath and Ulrich Drepper.
870 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
872 * SHA-256 and SHA-512 based password encryption.
873 Implemented by Ulrich Drepper.
875 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
876 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
877 yo_NG.
879 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
880 Implemented by Ulrich Drepper.
881 \f
882 Version 2.6
884 * The following bugs are resolved with this release:
886 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
887 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
888 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
889 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
890 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
891 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
892 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
893 4702, 4858
895 * New Linux interfaces: epoll_pwait, sched_getcpu.
897 * New generic interfaces: strerror_l.
899 * nscd can now cache the services database. Implemented by Ulrich Drepper.
900 \f
901 Version 2.5
903 * The following bugs are resolved with this release:
905 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
906 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
907 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
908 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
909 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
910 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
911 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
912 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
913 3225, 3251, 3252, 3253, 3273
915 * For Linux, the sorting of addresses returned by getaddrinfo now also
916 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
917 Implemented by Ulrich Drepper.
919 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
920 Implemented by Ulrich Drepper.
922 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
924 * New iconv module for MIK. Contributed by Alexander Shopov.
926 * For sites with broken group and/or passwd database, the auto-propagate
927 option of nscd can prevent creating ID lookup entries from the results
928 of a name lookup and vice versa. This usually is no problem but some
929 site might have problems with the default behavior.
930 Implemented by Ulrich Drepper.
932 * Iterating over entire database in NIS can be slow. With the
933 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
934 to trade time for memory. The entire database will be read at once.
935 Implemented by Ulrich Drepper.
937 * The interfaces introduced in RFC 3542 have been implemented by
938 Ulrich Drepper.
940 * Support for the new ELF hash table format was added by Ulrich Drepper.
942 * Support for priority inheritance mutexes added by Jakub Jelinek and
943 Ulrich Drepper.
945 * Support for priority protected mutexes added by Jakub Jelinek.
947 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
948 or_IN, csb_PL, fy_NL, sr_ME.
949 \f
950 Version 2.4
952 * More overflow detection functions.
954 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
955 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
957 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
958 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
959 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
960 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
961 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
962 by Masahide Washizawa.
964 * It is now possible to install audit libraries for the dynamic linker using
965 LD_AUDIT. Implemented by Ulrich Drepper.
967 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
968 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
969 For a libc and libpthread that works well on Linux 2.4 kernels, we
970 recommend using the stable 2.3 branch.
972 * The new function open_wmemstream acts like open_memstream,
973 but uses a wchar_t wide character buffer.
975 * The new function ppoll is an improved version of poll, similar to pselect.
977 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
978 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
979 renameat, unlinkat, linkat, symlinkat, readlinkat.
981 * New Linux kernel system calls: unshare,
982 inotify_init, inotify_add_watch, inotify_rm_watch.
984 * The euidaccess function is now also known by the alias eaccess,
985 for compatibility with some other systems.
987 * Timezone data updated to 2006b version.
988 \f
989 Version 2.3.6
991 * The following bugs are resolved with this release:
993 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
994 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
995 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
996 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
997 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
998 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1000 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1002 * As of this release, GCC 4 can be used to compile the C Library.
1004 * Timezone data updated to 2005m version.
1005 \f
1006 Version 2.3.5
1008 * The following bugs are resolved with this release:
1010 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1011 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1012 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1013 777, 787, 821, 822, 823, 825
1015 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1016 \f
1017 Version 2.3.4
1019 * Support for RFC 3678. Real implementations exist only for Linux so far.
1020 Implemented by Ulrich Drepper.
1022 * nscd can now cache entries persistently. Expiring entries are reloaded.
1023 For speedups the cache can be shared in memory with client processes.
1024 Implemented by Ulrich Drepper.
1026 * nscd can now perform SELinux checks.
1027 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1029 * getaddrinfo queries are now cached. Canonical name lookup is performed
1030 efficiently.
1031 Implemented by Ulrich Drepper.
1033 * The nothrow function attribute is used when headers are used by gcc when
1034 compiling C code. This can avoid significant amounts of exception
1035 handling data.
1037 * The malloc functions perform more error checking and are stricter when
1038 it comes to reacting on errors. The default action is to terminate
1039 the process after showing an error message. Implemented by Ulrich Drepper.
1041 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1042 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1044 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1045 namespaces using the new function dlmopen(). This feature is of course,
1046 like most other dynamic loading functionality, not available in statically
1047 linked applications. Implemented by Ulrich Drepper.
1049 * Low-overhead boundary checking variants of string and some stdio functions
1050 were added. These are to be used in conjunction with a gcc patch by
1051 Jakub Jelinek which adds calls to these functions if possible.
1052 Implemented by Jakub Jelinek and Ulrich Drepper.
1054 * Old code for several operating systems and machine architectures that
1055 have not been in working condition in a long time have been removed from
1056 the main source tree maintained by the GNU C Library's maintainers.
1057 These files are now reside in the separate `ports' source module
1058 that is usable as an add-on when building the library.
1059 \f
1060 Version 2.3.3
1062 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1063 interrogate the dynamic linker, compatible with the Solaris interface.
1065 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1066 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1068 * getifaddrs now uses the netlink interface on Linux to get its information.
1069 Implemented by Thorsten Kukuk.
1071 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1072 Implemented by Ulrich Drepper.
1074 * support for non-executable stacks on x86 has been added. Changes mostly
1075 by Roland McGrath.
1077 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1078 and Ulrich Drepper.
1080 * getaddrinfo now performs destination address selection according to
1081 RFC 3484.
1082 \f
1083 Version 2.3.2
1085 * Thread-safe interfaces for many functions that access locale data
1086 were added in version 2.3, but these features were omitted from NEWS.
1087 Many functions have variants with an `_l' suffix that take a `locale_t'
1088 object as a parameter rather than consulting the current locale.
1089 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1090 create and maintain `locale_t' objects. Additionally, the new function
1091 `uselocale' sets "the current locale" (as used by functions not so
1092 parameterized) set for an individual thread. These features were added
1093 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1095 * The functions getresuid, getresgid, setresuid, and setresgid, which
1096 have long been available on Linux, are now declared in <unistd.h>
1097 and are now also available on the Hurd.
1099 * ELF thread-local storage support (TLS) now works on x86-64.
1101 * The new dynamic string token $LIB is expanded in shared library names.
1102 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1104 * Aldy Hernandez contributed complete software floating point support for
1105 PowerPC machines with no FPU.
1107 * fexecve is implemented on Linux.
1109 * The `btowc' function should work at least twice as fast due to
1110 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1112 * With approriate thread add-ons cancelable functions are now implemented
1113 in libc.so as well. No need to call the function in libpthread. This
1114 change allowed to finally disable the incorrect and expensive handling
1115 of weak definition in ld.so.
1117 * Yet more PLT entries in libc.so have been removed. We finally arrived
1118 at the bare minimum. Startup times improved appropriately.
1120 * Support for the new Linux/x86 system call interface was added. The
1121 AT_SYSINFO auxiliary vector entry is recognized and handled.
1122 \f
1123 Version 2.3
1125 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1126 charsets.
1128 * iconv (the program and the interface) now accepts empty names (excluding
1129 options like //TRANSLIT) to mean "use charset of current locale".
1131 * localedef can now transliterate characters in strings which are not in
1132 the provided charmap. The information from the input locale is used.
1134 * Prelinking support was added for ELF targets. This requires additional
1135 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1137 * Read-only stdio streams now use mmap to speed up operation by eliminating
1138 copying and buffer underflows. To use add 'm' to the mode string of
1139 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1141 * The malloc functions were completely rewritten by Wolfram Gloger based
1142 on Doug Lea's malloc-2.7.0.c.
1144 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1145 implementation of regex.
1147 * Bruno Haible upgraded the iconv and locale implementation to support
1148 Unicode 3.2.
1150 * Contents of the LC_* and LANG environment variables in the CEN style are
1151 not recognized anymore. It never was used. Change by Ulrich Drepper.
1153 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1154 thread-local storage (TLS) ABI on some platforms.
1155 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1157 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1158 EUC-JISX0213, and TSCII.
1160 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1161 BSD-compatible interface for getting all network interface addresses.
1162 Implementation for IPv4 by Roland McGrath.
1164 * Loading of locale data is faster due to the introduction of a locale
1165 archive. Implemented by Roland McGrath and Ulrich Drepper.
1167 * Startup times are significantly reduced by not using exported functions
1168 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1169 and Ulrich Drepper.
1171 * Steven Munroe contributed a port to PowerPC64/Linux.
1172 \f
1173 Version 2.2.6
1175 * The Hurd now uses the GNU libio implementation of stdio rather than the
1176 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1178 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1179 with the same behavior as the Linux system call of the same name.
1180 \f
1181 Version 2.2.5
1183 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1184 128-bit long double format.
1186 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1187 IBM1161, and IBM1162 charsets.
1189 * Andreas Jaeger contributed a port to x86-64/Linux.
1191 * Peter Bruin contributed a port to PowerPC/Hurd.
1193 * libc functions using I/O streams now can handle wide-oriented streams
1194 as well.
1196 * optimizations in the dynamic linker. Binaries created by recent binutils
1197 versions start up quicker due to reduced time spent on relocations.
1199 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1200 \f
1201 Version 2.2.4
1203 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1204 asinh, atanh, j0 for the 128-bit long double format.
1206 * Bruno Haible updated all the code handling Unicode in some form to
1207 support Unicode 3.1.
1209 * Speed of regex for single-byte locales is back to previous levels.
1210 Patch by Isamu Hasegawa.
1212 * Alpha, SPARC, and IA-64 now also using floating stacks.
1214 * Startup time of internationalized applications greatly improved through
1215 iconv cache. Use iconvconfig to generate the cache file.
1216 Contributed by Ulrich Drepper.
1218 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1219 severe performance problems. Patch by David Mosberger.
1221 * The Hurd port got a lot more functionality like AIO, various stdio
1222 extensions, etc. Mainly done by Roland McGrath.
1224 * mtrace can now lookup symbols in shared libraries.
1225 \f
1226 Version 2.2.3
1228 * Intel's IA-64 math library is largely integrated. It provides fast and
1229 accurate implementatations for most basic and standard math functions
1230 in float, double, and long double format.
1232 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1233 and asin for the 96-bit long double format and asin, log, tan for the
1234 128-bit long double format.
1236 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1237 The basic double functions exist today. Contributed by Abraham Ziv
1238 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1239 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1241 * An asynchronous name lookup library was added. The interface is designed
1242 after POSIX AIO. The proposal was circulated beforehand to get comments.
1243 No negative ones came in. Implemented by Ulrich Drepper.
1245 * Port to S390/64bit contributed by Martin Schwidefsky
1246 <schwidefsky@de.ibm.com>.
1248 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1249 of functions for Linux/IA-64.
1251 * The RPC code is now thread safe. Threads can now use the same service
1252 of different services at the same time. Patch by Eric Norum
1253 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1255 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1256 family of functions for Linux/S390.
1258 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1259 of functions for Linux/x86.
1261 * Port to Linux/CRIS contributed by Axis Communications.
1262 \f
1263 Version 2.2.2
1265 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1266 we can now check for namespace violations and missing declarations. The
1267 result is that almost all headers are now Unix-compliant (as defined in
1268 the upcoming XPG6). The negative side is that some programs might need
1269 corrections, too, if they depend on the incorrect form of the headers in
1270 previous versions which defined too many symbols and included too many
1271 other headers.
1273 * regex now handles multibyte character sets correctly.
1274 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1276 * iconv (the program) does now conform to the upcoming XPG6 and handles
1277 charmaps. Instead of the charset names the path of charmaps can be
1278 provided and the conversion happens based on this data.
1279 Contributed by Ulrich Drepper.
1281 * The locale program now provides detailed information about the installed
1282 locales. While
1284 locale -a
1286 only lists the names of the supported locales
1288 locale -a --verbose
1290 provides details such as country, language, and codeset name.
1291 Contributed by Ulrich Drepper.
1292 \f
1293 Version 2.2.1
1295 * The gencat program now parses the input file according to the charset
1296 selected by the LC_CTYPE category. This is important for stateful
1297 character sets. To make generating catalogs easier there is a way
1298 to overwrite the charset selected by the locale: before the first
1299 message or $ quote line the catalog can contain a line like
1301 $ codeset=ISO-8859-2
1303 to select the charset (ISO-8859-2 in this case).
1305 Implemented by Shinya Hanataka and Ulrich Drepper.
1307 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1308 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1309 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1311 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1312 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1314 * The LANGUAGE environment variable is now ignored unless the locale is
1315 changed from the default "C" locale.
1317 * The usual bug fixes.
1318 \f
1319 Version 2.2
1321 * Greg McGary added runtime support for bounds checking using gcc's
1322 new -fbounded-pointers option. ix86 target is complete. PowerPC
1323 is in progress.
1325 * Thorsten Kukuk added secure mode support to nscd.
1327 * The Berkeley db libraries have been removed.
1329 Related, the nss_db module is now in a separate package since it
1330 obviously requires a database library being available.
1332 * Wide character I/O streams implemented by Ulrich Drepper.
1334 * Functions from the extended socket API added by Ulrich Drepper.
1336 * Functions feenableexcept and fedisableexcept to control the
1337 behaviour of individual exceptions have been added by Andreas Jaeger.
1339 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1341 * The resolver code has been updated from bind 8.2.3-T5B which supports
1342 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1343 and Mark Kettenis.
1345 This change could in some situations effect backward compatibility. Since
1346 now `_res' is a thread-local instead of a global variable, modifying it
1347 in one thread does not have any effect in other threads.
1349 The resolver library was also extended to allow IPv6 as the transport
1350 protocol for the requests. This work was done by Stig Venaas.
1352 * Compatibility code for K&R C compilers has been removed from the
1353 header files. A ISO C compiler is needed to use the library
1354 (conforming to either C89 or C99 standard).
1356 * Complete rewrite of the localedef program to support multibyte character
1357 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1358 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1359 Implemented by Ulrich Drepper.
1361 Bruno Haible significantly improved the generation and use of the data
1362 structures for the wide character tables.
1364 * Plural handling in gettext implemented by Ulrich Drepper.
1366 * The utmp daemon has been removed.
1368 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1370 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1371 and Yutaka Niibe.
1373 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1375 * POSIX barriers implemented by Kaz Kylheku.
1377 * POSIX spawn function family implemented by Ulrich Drepper.
1379 * POSIX spinlocks are now available.
1381 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1383 * the configure option --enable-kernel=X.Y.Z allows to strip out
1384 compatibility for kernel versions before X.Y.Z. This is currently only
1385 implemented for Linux.
1387 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1388 field sin6_scope_id. This means that all programs using IPv6 should be
1389 recompiled. Don't expect binary compatibility with previous glibc
1390 versions.
1392 * various conversion modules for IBM character sets contributed by
1393 Masahide Washizawa.
1395 * IA-64 port by Jes Sorensen and HJ Lu.
1396 \f
1397 Version 2.1.3
1399 * bug fixes
1401 \f
1402 Version 2.1.2
1404 * bug fixes
1406 \f
1407 Version 2.1.1
1409 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1411 * New xdr functions are added; some rpc functions are now 64bit clean.
1413 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1415 * Fixed known incompatibilities with glibc 2.0.
1417 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1419 * Optimized a number of functions (especially the ELF dynamic loader).
1421 * Update timezone data files.
1423 * lots of charmaps corrections
1425 * some new locale definitions and charmaps
1427 \f
1428 Version 2.1
1430 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1431 conform to POSIX member type requirements. Symbol versions have been
1432 adjusted as needed within the library, and for direct use by applications,
1433 but there is potential for problems if third-party libraries use
1434 struct timeval as part of their interface. This does not present
1435 a problem for X and other "essential" system libraries.
1437 * An additional locale model to support C++ Standard Library locale
1438 model and probably more was implemented by Ulrich Drepper.
1440 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1441 symbol level.
1443 * Miles Bader provided the `argp' function family to support hierachical
1444 command line argument parsing, layered on top of getopt.
1446 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1448 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1449 numbers.
1451 * scanf recognizes the %a and %A format for scanning floating point numbers.
1453 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1454 information and interfaces for the available integer types.
1456 * about 130 new math functions were added to implement the ISO C9x math
1457 library.
1459 * the new header <complex.h> contains definitions of the complex math
1460 functions from ISO C 9X.
1462 * the new header <tgmath.h> defines generic macros to use complex or
1463 real valued functions.
1465 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1467 * Andreas Jaeger provided a test suite for the math library.
1469 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1471 * Ulrich Drepper added character set conversion functions (iconv).
1473 * Optimized string functions have been added.
1475 * The localedata addon is now part of glibc.
1477 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1479 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1480 daemon for NSS (nscd).
1482 Missing a better place here are some numbers on improvements. Under
1483 Linux 2.1.125 un-tar-ing the kernel sources takes
1485 user system wall
1487 using local files 12.19s 6.88s 22.91s
1489 using NIS 13.92s 8.91s 26.34s
1491 using NIS & nscd 10.37s 7.34s 25.30s
1493 using NIS+ 27.57s 30.37s 640.46s
1495 using NIS+ & nscd 10.25s 7.83s 26.51s
1497 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1499 Keep in mind that non-namelookup related operations dominate above times.
1500 It was just a common complain that using NIS+ unpacking the kernel is
1501 horribly slow.
1503 [1] The old nscd implementation is not available anymore since it was
1504 distributed with glibc up to version 2.0.98 and thus is now replaced.
1506 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1508 * Mark Kettenis provided a Hesiod NSS module.
1510 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1511 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1513 * rcmd can now handle netgroups (Dick Streefland).
1515 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1516 Bambrough.
1518 * Support for the IPv6 protocol has been added to the socket API, as per the
1519 latest draft standards.
1521 * Support for Linux 2.2 has been added.
1523 * Interface changes relative to the latest 2.0.x release:
1524 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1525 addseverity NEW: Unix98
1526 alphasort64 NEW: LFS
1527 argp_err_exit_status NEW: argp, GNU ext
1528 argp_error NEW: argp, GNU ext
1529 argp_failure NEW: argp, GNU ext
1530 argp_help NEW: argp, GNU ext
1531 argp_parse NEW: argp, GNU ext
1532 argp_program_bug_address NEW: argp, GNU ext
1533 argp_program_version NEW: argp, GNU ext
1534 argp_program_version_hook NEW: argp, GNU ext
1535 argp_state_help NEW: argp, GNU ext
1536 argp_usage NEW: argp, GNU ext
1537 authdes_create NEW: Secure RPC
1538 authdes_getucred NEW: Secure RPC
1539 authdes_pk_create NEW: Secure RPC
1540 backtrace NEW: GNU ext.
1541 backtrace_symbols NEW: GNU ext.
1542 backtrace_symbols_fd NEW: GNU ext.
1543 cacos NEW: ISO C 9x
1544 cacosf NEW: ISO C 9x
1545 cacosh NEW: ISO C 9x
1546 cacoshf NEW: ISO C 9x
1547 cacoshl NEW: ISO C 9x
1548 cacosl NEW: ISO C 9x
1549 capget NEW: kernel
1550 capset NEW: kernel
1551 carg NEW: ISO C 9x
1552 cargf NEW: ISO C 9x
1553 cargl NEW: ISO C 9x
1554 casin NEW: ISO C 9x
1555 casinf NEW: ISO C 9x
1556 casinh NEW: ISO C 9x
1557 casinhf NEW: ISO C 9x
1558 casinhl NEW: ISO C 9x
1559 casinl NEW: ISO C 9x
1560 catan NEW: ISO C 9x
1561 catanf NEW: ISO C 9x
1562 catanh NEW: ISO C 9x
1563 catanhf NEW: ISO C 9x
1564 catanhl NEW: ISO C 9x
1565 catanl NEW: ISO C 9x
1566 cbc_crypt NEW: Secure RPC
1567 ccos NEW: ISO C 9x
1568 ccosf NEW: ISO C 9x
1569 ccosh NEW: ISO C 9x
1570 ccoshf NEW: ISO C 9x
1571 ccoshl NEW: ISO C 9x
1572 ccosl NEW: ISO C 9x
1573 cexp NEW: ISO C 9x
1574 cexpf NEW: ISO C 9x
1575 cexpl NEW: ISO C 9x
1576 cimag NEW: ISO C 9x
1577 cimagf NEW: ISO C 9x
1578 cimagl NEW: ISO C 9x
1579 clearerr_locked REMOVED
1580 clntunix_create NEW: sunrpc ext
1581 clog NEW: ISO C 9x
1582 clog10 NEW: ISO C 9x
1583 clog10f NEW: ISO C 9x
1584 clog10l NEW: ISO C 9x
1585 clogf NEW: ISO C 9x
1586 clogl NEW: ISO C 9x
1587 conj NEW: ISO C 9x
1588 conjf NEW: ISO C 9x
1589 conjl NEW: ISO C 9x
1590 cpow NEW: ISO C 9x
1591 cpowf NEW: ISO C 9x
1592 cpowl NEW: ISO C 9x
1593 cproj NEW: ISO C 9x
1594 cprojf NEW: ISO C 9x
1595 cprojl NEW: ISO C 9x
1596 creal NEW: ISO C 9x
1597 crealf NEW: ISO C 9x
1598 creall NEW: ISO C 9x
1599 creat64 NEW: LFS
1600 csin NEW: ISO C 9x
1601 csinf NEW: ISO C 9x
1602 csinh NEW: ISO C 9x
1603 csinhf NEW: ISO C 9x
1604 csinhl NEW: ISO C 9x
1605 csinl NEW: ISO C 9x
1606 csqrt NEW: ISO C 9x
1607 csqrtf NEW: ISO C 9x
1608 csqrtl NEW: ISO C 9x
1609 ctan NEW: ISO C 9x
1610 ctanf NEW: ISO C 9x
1611 ctanh NEW: ISO C 9x
1612 ctanhf NEW: ISO C 9x
1613 ctanhl NEW: ISO C 9x
1614 ctanl NEW: ISO C 9x
1615 des_setparity NEW: Secure RPC
1616 ecb_crypt NEW: Secure RPC
1617 endutxent NEW: Unix98
1618 exp10 NEW: ISO C 9x
1619 exp10f NEW: ISO C 9x
1620 exp10l NEW: ISO C 9x
1621 exp2 NEW: ISO C 9x
1622 exp2f NEW: ISO C 9x
1623 exp2l NEW: ISO C 9x
1624 fattach NEW: STREAMS
1625 fdetach NEW: STREAMS
1626 fdim NEW: ISO C 9x
1627 fdimf NEW: ISO C 9x
1628 fdiml NEW: ISO C 9x
1629 feclearexcept NEW: ISO C 9x
1630 fegetenv NEW: ISO C 9x
1631 fegetexceptflag NEW: ISO C 9x
1632 fegetround NEW: ISO C 9x
1633 feholdexcept NEW: ISO C 9x
1634 feof_locked REMOVED
1635 feraiseexcept NEW: ISO C 9x
1636 ferror_locked REMOVED
1637 fesetenv NEW: ISO C 9x
1638 fesetexceptflag NEW: ISO C 9x
1639 fesetround NEW: ISO C 9x
1640 fetestexcept NEW: ISO C 9x
1641 feupdateenv NEW: ISO C 9x
1642 fflush_locked REMOVED
1643 ffsl NEW: GNU ext.
1644 ffsll NEW: GNU ext.
1645 fgetpos64 NEW: LFS
1646 fgets_unlocked NEW: GNU ext.
1647 fileno_locked REMOVED
1648 fma NEW: ISO C 9x
1649 fmaf NEW: ISO C 9x
1650 fmal NEW: ISO C 9x
1651 fmax NEW: ISO C 9x
1652 fmaxf NEW: ISO C 9x
1653 fmaxl NEW: ISO C 9x
1654 fmin NEW: ISO C 9x
1655 fminf NEW: ISO C 9x
1656 fminl NEW: ISO C 9x
1657 fmtmsg NEW: Unix98
1658 fopen64 NEW: LFS
1659 fputc_locked REMOVED
1660 fputs_unlocked NEW: GNU ext.
1661 fread_unlocked NEW: GNU ext.
1662 freopen64 NEW: LFS
1663 fseeko NEW: Unix98
1664 fsetpos64 NEW: LFS
1665 fstatfs64 NEW: LFS
1666 fstatvfs NEW: Unix98
1667 fstatvfs64 NEW: LFS
1668 ftello NEW: Unix98
1669 ftello64 NEW: LFS
1670 ftruncate64 NEW: LFS
1671 ftw64 NEW: LFS
1672 fwrite_unlocked NEW: GNU ext.
1673 gai_strerror NEW: IPv6
1674 gamma_r REMOVED
1675 gammaf_r REMOVED
1676 gammal_r REMOVED
1677 getchar_locked REMOVED
1678 getdate NEW: Unix98
1679 getdate_err NEW: Unix98
1680 getdate_r NEW: GNU ext.
1681 getmsg NEW: STREAMS
1682 getnameinfo NEW: IPv6
1683 getnetname NEW: Secure RPC
1684 getpmsg NEW: STREAMS
1685 getpt NEW: Unix98 PTY
1686 getrlimit64 NEW: LFS
1687 getutxent NEW: Unix98
1688 getutxid NEW: Unix98
1689 getutxline NEW: Unix98
1690 glob64 NEW: GNU ext.
1691 globfree64 NEW: GNU ext.
1692 gnu_get_libc_release NEW: GNU ext.
1693 gnu_get_libc_version NEW: GNU ext.
1694 grantpt NEW: Unix98 PTY
1695 host2netname NEW: Secure RPC
1696 iconv NEW: iconv
1697 iconv_close NEW: iconv
1698 iconv_open NEW: iconv
1699 if_freenameindex NEW: IPv6
1700 if_indextoname NEW: IPv6
1701 if_nameindex NEW: IPv6
1702 if_nametoindex NEW: IPv6
1703 in6addr_any NEW: IPv6
1704 in6addr_loopback NEW: IPv6
1705 inet6_isipv4mapped NEW: IPv6
1706 isastream NEW: STREAMS
1707 iswblank NEW: GNU ext.
1708 key_decryptsession NEW: Secure RPC
1709 key_decryptsession_pk NEW: Secure RPC
1710 key_encryptsession NEW: Secure RPC
1711 key_encryptsession_pk NEW: Secure RPC
1712 key_gendes NEW: Secure RPC
1713 key_get_conv NEW: Secure RPC
1714 key_secretkey_is_set NEW: Secure RPC
1715 key_setnet NEW: Secure RPC
1716 key_setsecret NEW: Secure RPC
1717 llrint NEW: ISO C 9x
1718 llrintf NEW: ISO C 9x
1719 llrintl NEW: ISO C 9x
1720 llround NEW: ISO C 9x
1721 llroundf NEW: ISO C 9x
1722 llroundl NEW: ISO C 9x
1723 log2 NEW: ISO C 9x
1724 log2f NEW: ISO C 9x
1725 log2l NEW: ISO C 9x
1726 lrint NEW: ISO C 9x
1727 lrintf NEW: ISO C 9x
1728 lrintl NEW: ISO C 9x
1729 lround NEW: ISO C 9x
1730 lroundf NEW: ISO C 9x
1731 lroundl NEW: ISO C 9x
1732 lseek64 NEW: LFS
1733 makecontext NEW: Unix98
1734 mempcpy NEW: GNU ext.
1735 mmap64 NEW: LFS
1736 moncontrol REMOVED
1737 modify_ldt NEW: kernel
1738 nan NEW: ISO C 9x
1739 nanf NEW: ISO C 9x
1740 nanl NEW: ISO C 9x
1741 nearbyint NEW: ISO C 9x
1742 nearbyintf NEW: ISO C 9x
1743 nearbyintl NEW: ISO C 9x
1744 netname2host NEW: Secure RPC
1745 netname2user NEW: Secure RPC
1746 nexttoward NEW: ISO C 9x
1747 nexttowardf NEW: ISO C 9x
1748 nexttowardl NEW: ISO C 9x
1749 nftw NEW: Unix98
1750 nftw64 NEW: LFS
1751 open64 NEW: LFS
1752 passwd2des NEW: Secure RPC
1753 pow10 NEW: GNU ext.
1754 pow10f NEW: GNU ext.
1755 pow10l NEW: GNU ext.
1756 pread NEW: Unix98
1757 pread64 NEW: LFS
1758 printf_size NEW: GNU ext.
1759 printf_size_info NEW: GNU ext.
1760 profil_counter REMOVED
1761 pthread_mutexattr_getkind_np REPLACED
1762 pthread_mutexattr_setkind_np REPLACED
1763 ptsname NEW: Unix98 PTY
1764 ptsname_r NEW: Unix98 PTY
1765 putc_locked REMOVED
1766 putchar_locked REMOVED
1767 putgrent NEW: GNU ext.
1768 putmsg NEW: STREAMS
1769 putpmsg NEW: STREAMS
1770 pututxline NEW: Unix98
1771 pwrite NEW: Unix98
1772 pwrite64 NEW: LFS
1773 readdir64 NEW: LFS
1774 readdir64_r NEW: LFS
1775 remquo NEW: ISO C 9x
1776 remquof NEW: ISO C 9x
1777 remquol NEW: ISO C 9x
1778 round NEW: ISO C 9x
1779 roundf NEW: ISO C 9x
1780 roundl NEW: ISO C 9x
1781 rtime NEW: GNU ext.
1782 scalbln NEW: ISO C 9x
1783 scalblnf NEW: ISO C 9x
1784 scalblnl NEW: ISO C 9x
1785 scandir64 NEW: LFS
1786 sendfile NEW: kernel
1787 setcontext NEW: Unix98
1788 setrlimit64 NEW: LFS
1789 setutxent NEW: Unix98
1790 sighold NEW: Unix98
1791 sigignore NEW: Unix98
1792 sigqueue NEW: POSIX.1b
1793 sigrelse NEW: Unix98
1794 sigset NEW: POSIX.1b
1795 sigtimedwait NEW: POSIX.1b
1796 sigwaitinfo NEW: POSIX.1b
1797 sincos NEW: GNU ext.
1798 sincosf NEW: GNU ext.
1799 sincosl NEW: GNU ext.
1800 statfs64 NEW: LFS
1801 statvfs NEW: Unix98
1802 statvfs64 NEW: LFS
1803 strcasestr NEW: GNU ext.
1804 strtoimax NEW: ISO C 9x
1805 strtoumax NEW: ISO C 9x
1806 strverscmp NEW: GNU ext.
1807 svcauthdes_stats NEW: Secure RPC
1808 svcunix_create NEW: sunrpc etx
1809 svcunixfd_create NEW: sunrpc ext
1810 swapcontext NEW: Unix98
1811 tcgetsid NEW: Unix98 PTY
1812 tdestroy NEW: GNU ext.
1813 tgamma NEW: ISO C 9x
1814 tgammaf NEW: ISO C 9x
1815 tgammal NEW: ISO C 9x
1816 tmpfile64 NEW: LFS
1817 trunc NEW: ISO C 9x
1818 truncate64 NEW: LFS
1819 truncf NEW: ISO C 9x
1820 truncl NEW: ISO C 9x
1821 umount2 NEW: kernel
1822 unlockpt NEW: Unix98 PTY
1823 updwtmpx NEW: Unix98
1824 user2netname NEW: Secure RPC
1825 utmpxname NEW: Unix98
1826 versionsort NEW: GNU ext.
1827 versionsort64 NEW: GNU ext.
1828 waitid NEW: Unix98
1829 wcscasecmp NEW: GNU ext.
1830 wcsncasecmp NEW: GNU ext.
1831 wcsnlen NEW: GNU ext.
1832 wcstoimax NEW: ISO C 9x
1833 wcstoll NEW: ISO C 9x
1834 wcstoull NEW: ISO C 9x
1835 wcstoumax NEW: ISO C 9x
1836 wcswcs NEW: Unix98
1837 wordexp NEW: POSIX.2
1838 wordfree NEW: POSIX.2
1839 write_profiling REMOVED
1840 xdecrypt NEW: Secure RPC
1841 xdr_authdes_cred NEW: Secure RPC
1842 xdr_authdes_verf NEW: Secure RPC
1843 xdr_cryptkeyarg NEW: Secure RPC
1844 xdr_cryptkeyarg2 NEW: Secure RPC
1845 xdr_cryptkeyres NEW: Secure RPC
1846 xdr_getcredres NEW: Secure RPC
1847 xdr_key_netstarg NEW: Secure RPC
1848 xdr_key_netstres NEW: Secure RPC
1849 xdr_keybuf NEW: Secure RPC
1850 xdr_keystatus NEW: Secure RPC
1851 xdr_netnamestr NEW: Secure RPC
1852 xdr_sizeof NEW: Secure RPC
1853 xdr_unixcred NEW: sunrpc ext
1854 xencrypt NEW: Secure RPC
1855 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1856 \f
1857 Version 2.0.6
1859 * more bug fixes
1861 \f
1862 Version 2.0.5
1864 * more bug fixes
1866 * inet_ntoa is thread-safe
1868 * updwtmp is moved from libutil to libc
1870 * rewrite of cbrt function
1872 * update of timezone data
1873 \f
1874 Version 2.0.4
1876 * more bug fixes
1877 \f
1878 Version 2.0.3
1880 * more bug fixes
1881 \f
1882 Version 2.0.2
1884 * more bug fixes
1886 * add atoll function
1888 * fix complex problems in Berkeley DB code
1890 * fix math functions
1891 \f
1892 Version 2.0.1
1894 * fixed lots of header problems (especially Linux/GNU specific)
1896 * dynamic loader preserves all registers
1898 * Roland McGrath provided support for handling of auxiliary objects in
1899 the ELF dynamic loader.
1901 * support for parallel builds is improved
1902 \f
1903 Version 2.0
1905 * GNU extensions are no longer declared by default. To enable them you
1906 must define the macro `_GNU_SOURCE' in your program or compile with
1907 `-D_GNU_SOURCE'.
1909 * The library has changed from using GNU ld symbol aliases to using weak
1910 symbols where available. The ELF object file format supports weak
1911 symbols; GNU ld also supports weak symbols in the a.out format. (There
1912 is also now support for other GNU ld extensions in ELF. Use the
1913 `--with-elf' option to configure to indicate you have ELF, and
1914 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1915 of many files which contained only symbol aliases, reducing the size of
1916 the source and the compiled library; many other files were renamed to
1917 less cryptic names previously occupied by the symbol alias files.
1918 There is a new header file <elf.h> for programs which operate on
1919 files in the ELF format.
1921 * Converted to Autoconf version 2, so `configure' has more options.
1922 Run `configure --help' to see the details.
1924 * The library can now be configured to build profiling, highly-optimized
1925 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1926 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1927 `configure' enable building these extra libraries. The shared library is
1928 built by default when using both ELF and GNU ld. When shared libraries
1929 are enabled, the new library `-ldl' is available for arbitrary run-time
1930 loading of shared objects; its interface is defined in <dlfcn.h>. The
1931 new header file <link.h> gives access to the internals of the run-time
1932 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1933 application of same name on other systems and it provides information
1934 about dynamically linked binaries.
1936 * The C library now provides the run-time support code for profiling
1937 executables compiled with `-pg'. Programs can control the profiling code
1938 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1939 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1940 the support for this file format was contributed by David Mosberger-Tang.
1942 * The math code has been replaced with a math library based on fdlibm from
1943 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1944 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1945 functions. The math functions now reside in a separate library, so
1946 programs using them will need to use `-lm' their linking commands.
1948 * John C. Bowman contributed optimized ix87 assembler inline functions.
1950 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1951 mechanism similar to that found in Solaris 2. This is now used for the
1952 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1953 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1954 file controls what services are used for each individual database. This
1955 works by loading shared libraries with names specified in `nsswitch.conf',
1956 so service modules can be changed or added at any time without even
1957 relinking any program. Currently there are the file, db, and NIS based
1958 NSS services available.
1960 * The new functions `strtoq' and `strtouq' parse integer values from
1961 strings, like `strtol' and `strtoul', but they return `long long int' and
1962 `unsigned long long int' values, respectively (64-bit quantities).
1964 * The new functions `strtof' and `strtold' parse floating-point values from
1965 strings, like `strtod', but they return `float' and `long double' values,
1966 respectively (on some machines `double' and `long double' are the same).
1968 * Ulrich Drepper has contributed new implementations of the floating-point
1969 printing and reading code used in the `printf' family of functions and
1970 `strtod', `strtof', and `strtold'. These new functions are perfectly
1971 accurate, and much faster than the old ones.
1973 * The implementation of the POSIX locale model was completely rewritten by
1974 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1975 to compile the POSIX locale definition.
1977 * The former dummy implementations of the strcoll and strxfrm function are
1978 now replaced by fully functional code contributed by Ulrich Drepper. The
1979 collation information comes from the POSIX locale definitions.
1981 * The new header <langinfo.h> defines an interface for accessing
1982 various locale-dependent data (using the locale chosen with `setlocale').
1984 * Ulrich Drepper has contributed a new suite of functions for operation on
1985 wide-character and multibyte-character strings, in <wchar.h>;
1986 and classification and case conversion of wide characters, in <wctype.h>.
1987 These new functions are conforming to the ISO C, Amendement 1 specification.
1989 * There is now a second implementation of the standard I/O library available.
1990 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1991 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1993 * You can now use positional parameter specifications in format strings
1994 for the `printf' and `scanf' families of functions. For example,
1995 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1996 ``Number 6, Mr Jones''. This is mainly useful when providing different
1997 format strings for different languages, whose grammars may dictate
1998 different orderings of the values being printed. To support this
1999 feature, the interface for `register_printf_handler' has changed; see
2000 the header file <printf.h> for details.
2002 * The `printf' and `scanf' families of functions now understand a new
2003 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2004 to group numbers as indicated by the locale; for `scanf' and friends, this
2005 says to accept as valid only a number with all the proper grouping
2006 separators in the right places. In the default "C" locale, numbers are
2007 not grouped; but locales for specific countries will define the usual
2008 conventions (i.e. separate thousands with `,' in the US locale).
2010 * The pgrp functions have been regularized, slightly incompatibly but much
2011 less confusingly. The core functions are now `getpgid' and `setpgid',
2012 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2013 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2014 provided for compatibility. There is no longer an incompatible `getpgrp'
2015 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2017 * The new header file <fts.h> and suite of functions simplify programs that
2018 operate on directory trees. This code comes from 4.4 BSD.
2020 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2021 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2022 NSS scheme used in glibc.
2024 * There is a new malloc debugging hook `__memalign_hook'.
2026 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2027 `unsigned int' in <sys/types.h>. These are for compatibility only and
2028 their use is discouraged.
2030 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2031 done differently, so that it works even without GNU ld.
2033 * New function `euidaccess' checks allowed access to a file like `access',
2034 but using the effective IDs instead of the real IDs.
2036 * The time zone data files have been updated for the latest and greatest
2037 local time conventions of the countries of the world.
2039 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2040 see <dirent.h>.
2042 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2043 for formatting floating-point numbers. They are provided only for
2044 compatibility; new programs should use `sprintf' instead. There are
2045 also equivalent function for the `long double' floating-point type and
2046 all functions also exist in a reentrant form.
2048 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2049 functions for maintaining the login-record files (primarily of use to
2050 system programs such as `login'), and convenient functions for
2051 allocating and initializing a pseudo-terminal (pty) device.
2053 * Ulrich Drepper has contributed new support for System V style
2054 shared memory and IPC on systems that support it.
2056 * Ulrich Drepper has contributed several miscellaneous new functions found
2057 in System V: The `hsearch' family of functions provide an effective
2058 implementation of hash tables; `a64l' and `l64a' provide a very simple
2059 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2060 number generator.
2062 * Ulrich Drepper has contributed new reentrant counterparts for the
2063 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2065 * Ulrich Drepper has contributed new, highly-optimized versions of several
2066 string functions for the i486/Pentium family of processors.
2068 * Ulrich Drepper has updated the Linux-specific code, based largely
2069 on work done in Hongjiu Lu's version of GNU libc for Linux.
2070 The GNU library now supports Linux versions 2.0.10 and later,
2071 using the ELF object file format (i[3456]86-*-linux).
2073 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2075 * David Mosberger-Tang and Richard Henderson have ported the C library
2076 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2077 dynamic linking support for ELF/Alpha.
2079 * Richard Henderson contributed several Alpha optimized assembler function
2080 for arithmetic and string handling.
2082 * Ulrich Drepper has contributed a new set of message catalog functions to
2083 support multiple languages using the <libintl.h> interface, for use with
2084 his new package GNU gettext. Translation volunteers have contributed
2085 catalogs of the library's messages in Spanish, German, and Korean.
2087 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2088 program and the `catgets' function for reading the catalog files it
2089 creates. (The <libintl.h> interface is preferred; we include the
2090 <nl_types.h> interface using `catgets' only for source compatibility with
2091 programs already written to use it.)
2093 * New header file <values.h> gives SVID-compatible names for <limits.h>
2094 constants.
2096 * Various new macros, declarations, and small header files for compatibility
2097 with 4.4 BSD.
2099 * New function `group_member' is a convenient way to check if a process has
2100 a given effective group ID.
2102 * When using GCC 2.7 and later, the socket functions are now declared in a
2103 special way so that passing an argument of type `struct sockaddr_in *',
2104 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2105 `struct sockaddr *' type, does not generate a type-clash warning.
2107 * New function `error' declared in header file <error.h> is a convenient
2108 function for printing error messages and optionally exiting; this is the
2109 canonical function used in GNU programs. The new functions `err', `warn',
2110 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2111 doing the same thing.
2113 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2114 POSIX.2 `glob' function to do ~ and {...} expansion.
2116 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2117 `clearenv' which is used in POSIX.9 is also available.
2119 * New function `getsid' returns session ID number on systems that support it.
2121 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2122 files <db.h> and <mpool.h> provide a rich set of functions for several
2123 types of simple databases stored in memory and in files, and <ndbm.h> is
2124 an old `ndbm'-compatible interface using the `db' functions. Link with
2125 `-ldb' to get these functions.
2127 * New macro `strdupa' copies a string like `strdup', but uses local stack
2128 space from `alloca' instead of dynamic heap space from `malloc'.
2130 * New function `strnlen' is like `strlen' but searches only a given maximum
2131 number of characters for the null terminator. `stpncpy', `strndup' and
2132 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2133 function.
2135 * New function `statfs' in header <sys/statfs.h>.
2137 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2138 provide convenient functions for operating on blocks of null-terminated
2139 strings.
2141 * A new suite of functions in <utmp.h> handle all the details of reading
2142 and writing the utmp file.
2144 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2145 Thorsten Kukuk.
2147 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2148 completely POSIX compliant and also implemented the extended functionality
2149 to handle alternate digit representation and alternate era date formats.
2151 * Ulrich Drepper provided an implementation of the `strptime' function
2152 defined in XPG4.2 which transforms a string into a `struct tm' value.
2154 * Paul Eggert provided the tzselect shell script as part of the timezone
2155 code. The shell script makes it easy to select the correct timezone
2156 specification.
2158 * The implementation of the malloc family of functions is completely replaced
2159 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2160 The implementation uses the mmap function (if available) and it is
2161 optimized for the use in multi threaded programs.
2163 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2164 functions. This new functionality is usable by specifying a special
2165 salt string and it is compatible with implementation on *BSD systems.
2167 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2168 `getsubopt' to handle second level command line options, `bsd_signal'
2169 to access BSD style `signal' functionality, the obsolete `regexp' style
2170 expression matcher.
2172 * the `lchown' function is available on system which support this
2173 functionality.
2175 * The implementation of the shadow password handling function was contributed
2176 by Ulrich Drepper.
2178 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2180 * POSIX.1g support was added. The <sys/select.h> header is available,
2181 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2182 implementation of `getaddrinfo'.
2183 \f
2184 Version 1.09
2186 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2188 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2189 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2191 * The new function `daemon' from 4.4 BSD is useful for server programs that
2192 want to put themselves in the background.
2194 * Joel Sherrill has contributed support for several standalone boards that
2195 run without an operating system.
2197 * `printf', `scanf' and friends now accept a `q' type modifier for long
2198 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2200 * All of the code taken from BSD (notably most of the math and networking
2201 routines) has been updated from the BSD 4.4-Lite release.
2203 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2205 * The new functions `getdomainname' and `setdomainname' fetch or change the
2206 YP/NIS domain name. These are system calls which exist on systems which
2207 have YP (aka NIS).
2209 * The time zone data files have been updated for the latest international
2210 conventions.
2212 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2213 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2214 \f
2215 Version 1.08
2217 * The C library now includes support for Sun RPC, from Sun's free
2218 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2219 are included. (There is still no support for YP.)
2221 * Tom Quinn has contributed a port of the C library to SGI machines running
2222 Irix 4 (mips-sgi-irix4).
2224 * The new `lockf' function is a simplified interface to the locking
2225 facilities of `fcntl', included for compatibility.
2227 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2229 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2231 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2232 compatibility.
2234 * The error message printed by `assert' for a failed assertion now includes
2235 the name of the program (if using GNU ld) and the name of the calling
2236 function (with versions of GCC that support this).
2238 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2240 * The library now includes the <sys/mman.h> header file and memory
2241 management functions `mmap', `munmap', `mprotect', `msync', and
2242 `madvise', on systems that support those facilities.
2244 * The interface for `mcheck' has changed slightly: the function called to
2245 abort the program when an allocation inconsistency is detected now takes
2246 an argument that indicates the type of failure. The new function
2247 `mprobe' lets you request a consistency check for a particular block at
2248 any time (checks are normally done only when you call `free' or `realloc'
2249 on a block).
2251 * It is now possible to easily cross-compile the C library, building on one
2252 system a library to run on another machine and/or operating system. All
2253 you need to do is set the variable `HOST_CC' in `configparms' to the
2254 native compiler for programs to run on the machine you are building on (a
2255 few generator programs are used on Unix systems); set `CC' to the
2256 cross-compiler.
2258 * The new function `fexecve' (only implemented on the GNU system) executes
2259 a program file given a file descriptor already open on the file.
2260 \f
2261 Version 1.07
2263 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2264 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2266 * You can set the variable `libprefix' in `configparms' to specify a prefix
2267 to be prepended to installed library files; this makes it easy to install
2268 the GNU C library to be linked as `-lgnuc' or whatever.
2270 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2271 copies a limited number of characters from a string, and returns the
2272 address of the last character written.
2274 * You no longer need to check for whether the installed `stddef.h' is
2275 compatible with the GNU C library. configure now checks for you.
2277 * You can now define a per-stream `fileno' function to convert the
2278 stream's cookie into an integral file descriptor.
2280 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2281 allocates zero bytes of storage, and returns a unique pointer which
2282 you can pass to `realloc' or `free'. The behavior is undefined if
2283 you dereference this pointer.
2285 * The C library now runs on Sony NEWS m68k machines running either
2286 NewsOS 3 or NewsOS 4.
2288 * The new `syscall' function is a system-dependent primitive function
2289 for invoking system calls. It has the canonical behavior on Unix
2290 systems, including unreliable return values for some calls (such as
2291 `pipe', `fork' and `getppid').
2293 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2294 to `EAGAIN', which is the preferred name. On systems whose kernels
2295 use two distinct codes, the C library now translates EWOULDBLOCK to
2296 EAGAIN in every system call function.
2297 \f
2298 Version 1.06
2300 * The GNU C Library Reference Manual is now distributed with the library.
2301 `make dvi' will produce a DVI file of the printed manual.
2302 `make info' will produce Info files that you can read on line using C-h i
2303 in Emacs or the `info' program.
2304 Please send comments on the manual to bug-glibc-manual@gnu.org.
2306 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2308 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2310 * Jason Merrill has contributed a port to the Sequent Symmetry running
2311 Dynix version 3 (i386-sequent-dynix).
2313 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2314 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2316 * New function `memory_warnings' lets you arrange to get warnings when
2317 malloc is running out of memory to allocate, like Emacs gives you.
2319 * The C library now contains the relocating allocator used in Emacs 19 for
2320 its editing buffers. This allocator (ralloc) minimizes allocation
2321 overhead and fragmentation by moving allocated regions around whenever it
2322 needs to. You always refer to a ralloc'd region with a "handle" (a
2323 pointer to a pointer--an object of type `void **').
2325 * There is a new `printf' format: `%m' gives you the string corresponding
2326 to the error code in `errno'.
2328 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2329 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2330 pass, the `a' modifier says to fill in a `char **' you pass with a
2331 malloc'd string.
2333 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2334 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2335 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2337 * `mkstemp' is a traditional Unix function to atomically create and open a
2338 uniquely-named temporary file.
2339 \f
2340 Version 1.05
2342 * The standard location for the file that says what the local timezone is
2343 has changed again. It is now `/usr/local/etc/localtime' (or more
2344 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2346 * The distribution no longer contains any files with names longer than 14
2347 characters.
2349 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2350 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2352 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2353 \f
2354 Version 1.04
2356 * The configuration process has changed quite a bit. The `configure'
2357 script is now used just like the configuration scripts for other GNU
2358 packages. The `sysdeps' directory hierarchy is much rearranged.
2359 The file `INSTALL' explains the new scheme in detail.
2361 * The header files no longer need to be processed into ANSI C and
2362 traditional C versions. There is just one set of files to install, and
2363 it will work with ANSI or old C compilers (including `gcc -traditional').
2365 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2366 MIPS DECStation running Ultrix 4.
2368 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2369 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2370 made itself into a shared library.
2372 * Yet further improved support for the i386, running 4.3 BSD-like systems
2373 (such as Mach 3 with the Unix single-server), or System V.
2375 * New function `strncasecmp' to do case-insensitive string comparison
2376 with limited length.
2378 * New function `strsep' is a reentrant alternative to `strtok'.
2380 * New functions `scandir' and `alphasort' for searching directories.
2382 * New function `setenv' is a better interface to `putenv'.
2384 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2385 function for traversing a directory tree.
2387 * The GNU obstack package is now also part of the C library.
2388 The new function `open_obstack_stream' creates a stdio stream that
2389 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2390 formatted output directly to an obstack.
2392 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2393 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2395 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2397 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2398 things to your strings.
2400 * There are some new test programs: test-fseek, testmb, and testrand.
2402 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2403 These ports are not finished, but are a good starting place for really
2404 supporting those systems.
2406 * `/etc/localtime' is now the standard location for the file that says what
2407 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2408 This follows the general principle that `/etc' is the place for all local
2409 configuration files.
2411 * The C library header files now use `extern "C"' when used by the C++
2412 compiler, so the C library should now work with C++ code.
2414 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2415 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2416 in <strings.h>.)
2418 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2419 function which uses the `merge sort' algorithm, and is said to be
2420 significantly faster than the old GNU `qsort' function. Merge sort is
2421 now the standard `qsort' function. The new algorithm can require a lot
2422 of temporary storage; so, the old sorting function is called when the
2423 required storage is not available.
2425 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2426 provides the Unix `crypt' function, plus some other entry points.
2428 * The code and header files taken from 4.4 BSD have been updated with the
2429 latest files released from Berkeley.
2430 \f
2431 ----------------------------------------------------------------------
2432 Copyright information:
2434 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2436 Permission is granted to anyone to make or distribute verbatim copies
2437 of this document as received, in any medium, provided that the
2438 copyright notice and this permission notice are preserved,
2439 thus giving the recipient permission to redistribute in turn.
2441 Permission is granted to distribute modified versions
2442 of this document, or of portions of it,
2443 under the above conditions, provided also that they
2444 carry prominent notices stating who last changed them.
2445 \f
2446 Local variables:
2447 version-control: never
2448 fill-column: 76
2449 End: