1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 7003,
13 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12986, 13028,
14 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286, 14547, 14699,
15 14752, 14876, 14910, 15004, 15048, 15073, 15089, 15128, 15218, 15268,
16 15277, 15308, 15362, 15374, 15400, 15425, 15427, 15483, 15522, 15531,
17 15532, 15593, 15601, 15608, 15609, 15610, 15632, 15640, 15670, 15672,
18 15680, 15681, 15723, 15734, 15735, 15736, 15748, 15749, 15754, 15760,
19 15763, 15764, 15797, 15799, 15825, 15843, 15844, 15846, 15847, 15849,
20 15850, 15855, 15856, 15857, 15859, 15867, 15886, 15887, 15890, 15892,
21 15893, 15895, 15897, 15901, 15905, 15909, 15915, 15917, 15919, 15921,
22 15923, 15939, 15941, 15948, 15963, 15966, 15985, 15988, 15997, 16032,
23 16034, 16036, 16037, 16038, 16041, 16055, 16071, 16072, 16074, 16077,
24 16078, 16103, 16112, 16133, 16143, 16144, 16146, 16150, 16151, 16153,
25 16167, 16172, 16195, 16214, 16245, 16271, 16274, 16283, 16289, 16293,
26 16314, 16316, 16330, 16337, 16338, 16356, 16365, 16366, 16369, 16372,
27 16375, 16379, 16384, 16385, 16386, 16387, 16390, 16394, 16400, 16407,
30 * Slovenian translations for glibc messages have been contributed by the
31 Translation Project's Slovenian team of translators.
33 * The public headers no longer use __unused nor __block. This change is to
34 support compiling programs that are derived from BSD sources and use
35 __unused internally, and to support compiling with Clang's -fblock
36 extension which uses __block.
38 * CVE-2012-4412 The strcoll implementation caches indices and rules for
39 large collation sequences to optimize multiple passes. This cache
40 computation may overflow for large collation sequences and may cause a
41 stack or buffer overflow. This is now fixed to use a slower algorithm
42 which does not use a cache if there is an integer overflow.
44 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
45 rules for large collation sequences to optimize multiple passes and falls
46 back to alloca if malloc fails, resulting in a possible stack overflow.
47 The implementation now falls back to an uncached collation sequence lookup
50 * CVE-2013-4788 The pointer guard used for pointer mangling was not
51 initialized for static applications resulting in the security feature
52 being disabled. The pointer guard is now correctly initialized to a
53 random value for static applications. Existing static applications need
54 to be recompiled to take advantage of the fix (bug 15754).
56 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
57 to the d_name member of struct dirent, or omit the terminating NUL
58 character. (Bugzilla #14699).
60 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
61 aligned_alloc functions could allocate too few bytes or corrupt the
62 heap when passed very large allocation size values (Bugzilla #15855,
65 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
66 for AF_INET6 has been fixed (Bugzilla #16072).
68 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
69 pap_CW, quz_PE, the_NP.
71 * Substantially revised locales: gd_GB, ht_HT
73 * The LC_ADDRESS field was updated to support country_car for almost all
76 * ISO 1427 definitions were updated.
78 * ISO 3166 definitions were updated.
80 * The localedef utility now supports --big-endian and --little-endian
81 command-line options to generate locales for a different system from that
82 for which the C library was built.
84 * Binary locale files now only depend on the endianness of the system for
85 which they are generated and not on other properties of that system. As a
86 consequence, binary files generated with new localedef may be incompatible
87 with old versions of the GNU C Library, and binary files generated with
88 old localedef may be incompatible with this version of the GNU C Library,
89 in the following circumstances:
91 + Locale files may be incompatible on m68k systems.
93 + Locale archive files (but not separate files for individual locales) may
94 be incompatible on systems where plain "char" is signed.
96 * The configure option --disable-versioning has been removed. Builds with
97 --disable-versioning had not worked for several years.
99 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
100 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
102 * SystemTap probes for malloc have been introduced.
104 * Support for powerpc64le has been added.
106 * The soft-float powerpc port now supports e500 processors.
108 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
110 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
111 set of header declarations that are enabled by default, even when other
112 feature test macros or compiler options such as -std=c99 would otherwise
113 disable some of those declarations.
115 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
116 conflict with POSIX. The libbsd-compat library (which was a dummy library
117 that did nothing) has also been removed.
121 * The following bugs are resolved with this release:
123 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
124 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
125 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
126 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
127 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
128 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
129 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
130 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
131 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
132 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
133 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
134 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
135 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
138 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
139 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
140 Distributions can re-enable building and using pt_chown via the new configure
141 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
142 considerable security risks and should only be used if the distribution
143 understands and accepts the risks.
145 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
148 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
149 fixed (Bugzilla #15330).
151 * Add support for calling C++11 thread_local object destructors on thread
152 and program exit. This needs compiler support for offloading C++11
153 destructor calls to glibc.
155 * Improved worst case performance of libm functions with double inputs and
158 * Support for priority inherited mutexes in pthread condition variables on
159 non-x86 architectures.
161 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
163 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
165 * Optimized string functions for ARM. Implemented by Will Newton and
168 * Optimized libm functions for SPARC. Implemented by David S. Miller.
170 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
173 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
174 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
176 * Added a benchmark framework to track performance of functions in glibc.
178 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
179 It is based on draft TS 18661 and currently enabled as a GNU extension.
181 * On Linux, the clock function now uses the clock_gettime system call
182 for improved precision, rather than old times system call.
184 * Added support for version-3 tz format files. This is needed when using
185 the tz database release 2013e or later, and affects a few unusual cases --
186 currently only TZ='America/Godthab' for time stamps after 2037.
188 * Added new API functions pthread_getattr_default_np and
189 pthread_setattr_default_np to get and set the default pthread
190 attributes of a process.
192 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
193 This may improve lock scaling of existing programs on TSX capable systems.
194 When the --enable-lock-elision=yes parameter is specified at configure
195 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
198 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
199 availability). Implemented by Ryan S. Arnold.
201 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
205 * The following bugs are resolved with this release:
207 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
208 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
209 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
210 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
211 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
212 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
213 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
214 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
215 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
216 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
217 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
218 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
219 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
220 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
221 14879, 14889, 14893, 14898, 14914.
223 * Optimization of memcpy for MIPS.
225 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
226 EMFILE has been fixed (Bugzilla #14889).
228 * The add-on ports collection is now distributed in the "ports" subdirectory
229 of the main GNU C Library distribution, rather than separately.
231 * Port to ARM AArch64 contributed by Linaro.
233 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
234 Optimized versions of memcpy, memset, and memcmp added for System z10 and
236 Implemented by Andreas Krebbel.
238 * The new function secure_getenv allows secure access to the environment,
239 returning NULL if running in a SUID/SGID process. This function replaces
240 the internal function __secure_getenv.
242 * SystemTap static probes have been added into the dynamic linker.
243 Implemented by Gary Benson.
245 * Optimizations of string functions strstr, strcasestr and memmem.
246 Implemented by Maxim Kuvyrkov.
248 * The minimum Linux kernel version that this version of the GNU C Library
249 can be used with is 2.6.16.
251 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
252 powerpc POWER7. Implemented by Will Schmidt.
254 * New configure option --disable-nscd builds the C library such that it
255 never attempts to contact the Name Service Caching Daemon (nscd).
256 New configure option --disable-build-nscd avoids building nscd itself;
257 this is the default if --disable-nscd is used.
259 * Improved support for cross-compilation, including cross-testing and
260 bootstrap builds without a previously built glibc.
262 * Several testsuite tests are now able to test multiple IFUNC variants of an
263 interface, rather than just testing the one that would be chooen by
266 * New configure options --with-bugurl and --with-pkgversion, for
267 distributors to use to embed their bug-reporting and package version
268 information in --help and --version output.
270 * The ttyname and ttyname_r functions on Linux now fall back to searching for
271 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
272 allows creation of chroots without the procfs mounted on /proc.
274 * The `crypt' function now fails if passed salt bytes that violate the
275 specification for those values. On Linux, the `crypt' function will
276 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
277 enabled, and fail on encrypted strings using the MD5 or DES algorithm
278 when the mode is enabled.
280 * The `clock_*' suite of functions (declared in <time.h>) is now available
281 directly in the main C library. Previously it was necessary to link with
282 -lrt to use these functions. This change has the effect that a
283 single-threaded program that uses a function such as `clock_gettime' (and
284 is not linked with -lrt) will no longer implicitly load the pthreads
285 library at runtime and so will not suffer the overheads associated with
286 multi-thread support in other code such as the C++ runtime library.
288 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
293 * The following bugs are resolved with this release:
295 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
296 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
297 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
298 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
299 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
300 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
301 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
302 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
303 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
304 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
305 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
306 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
307 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
308 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
309 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
310 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
311 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
312 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
313 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
314 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
315 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
316 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
319 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
320 configuring glibc with:
321 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
322 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
323 Implemented by H.J. Lu.
327 + define static_assert
329 + do not declare gets
331 + declare at_quick_exit and quick_exit also for ISO C11
333 + aligned_alloc. NB: The code is deliberately allows the size parameter
334 to not be a multiple of the alignment. This is a moronic requirement
335 in the standard but it is only a requirement on the caller, not the
340 + uchar.h support added
342 + CMPLX, CMPLXF, CMPLXL added
344 Implemented by Ulrich Drepper.
346 * Support for the IA-64 has been moved to ports.
348 * Remove support for anything but ELF binary format
350 * Checking versions of poll, ppoll added.
351 Implemented by Ulrich Drepper.
353 * More generic and 64-bit performance optimizations to math functions.
354 Implemented by Ulrich Drepper.
356 * New configure option --enable-obsolete-rpc makes the deprecated RPC
357 headers and functions available at compile time as they were before
358 version 2.14. This option will be removed at some time in the future
359 after the TI-RPC library becomes fully sufficient for the needs of
360 existing applications.
362 * Compatibility code for Linux kernel versions before 2.4 has been removed.
363 Note that glibc is not expected to work with any Linux kernel version
366 * New header <sys/auxv.h> and function getauxval allowing easy access to
367 the AT_* key-value pairs passed from the Linux kernel. The header also
368 defines the HWCAP_* bits associated with the AT_HWCAP key.
370 * New locales: mag_IN
372 * New configure option --enable-systemtap builds SystemTap static probes
373 into libc for setjmp and longjmp and into libpthread for various operations.
374 So far the setjmp/longjmp probes and some of the libpthread probes are
375 provided only for i*86 and x86_64.
376 Implemented by Roland McGrath and Rayson Ho.
378 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
380 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
383 * More optimized functions for SPARC. Implemented by David S. Miller.
385 * Improved support for cross-compilation, especially bootstrap builds
386 without a previously built glibc.
388 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
389 Chris Metcalf from Tilera.
391 * Support for the old ARM ABI has been removed from ports. Only the EABI is
392 now supported for ARM processors.
394 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
395 as the name of the dynamic linker, to distinguish it from the
396 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
398 * Support for CRIS has been removed from ports.
400 * A new class of installed header has been documented for low-level
401 platform-specific functionality. PowerPC added the first instance with a
402 function to provide time base register access. Contributed by Tulio
403 Magno Quites Machado Filho.
405 * ix86 configurations now install header files that are consistent with
406 what x86-64 configurations install. These same header files can be used
407 for -m32, -m64, or -mx32 builds.
408 Contributed by H.J. Lu.
410 * Math library bug fixes. A thorough audit of all open math library bugs was
411 conducted by Joseph Myers. Significant progress was made on many math
412 library bugs resulting in more accurate exceptions and function results.
413 Many thanks to all those that contributed including Andreas Jaeger for his
414 patch review and work on the x87 trigonometric instruction issues.
416 * Timezone data is no longer installed. Timezone-related binaries and scripts
417 will continue to be installed. Users should obtain their timezone data from
418 their distribution provider or from the tzdata package at
419 <ftp://munnari.oz.au/pub/>.
423 * The following bugs are resolved with this release:
425 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
426 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
427 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
428 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
429 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
430 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
431 13484, 13506, 13515, 13523, 13524, 13538, 13540
433 * New program pldd to list loaded object of a process
434 Implemented by Ulrich Drepper.
436 * Add nss_db support back to glibc. No more dependency on Berkeley db
437 and support for initgroups lookups.
438 Implemented by Ulrich Drepper.
440 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
441 Contributed by HJ Lu.
443 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
444 Contributed by HJ Lu.
446 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
447 on x86-32 and x86-64.
448 Contributed by Liubov Dmitrieva.
450 * Optimized strchr and strrchr for SSE on x86-32.
451 Contributed by Liubov Dmitrieva.
453 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
454 for x86-64 and x86-32.
455 Contributed by Liubov Dmitrieva.
457 * New interfaces: scandirat, scandirat64
458 Implemented by Ulrich Drepper.
460 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
461 Implemented by Ulrich Drepper.
463 * nscd now also caches the netgroup database.
464 Implemented by Ulrich Drepper.
466 * Integrate libm with gcc's -ffinite-math-only option.
467 Implemented by Ulrich Drepper.
469 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
470 to math functions. Implemented by Ulrich Drepper.
472 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
473 Implemented by Ulrich Drepper.
475 * New Linux interfaces: process_vm_readv, process_vm_writev
477 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
478 Implemented by Ulrich Drepper.
480 * Optimized nearbyint and strcasecmp for PPC.
481 Implemented by Adhemerval Zanella.
483 * New locales: bho_IN, unm_US, es_CU, ta_LK
487 * The following bugs are resolved with this release:
489 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
490 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
491 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
492 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
493 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
494 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
495 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
496 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
497 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
498 12795, 12811, 12813, 12814, 12841
500 * The RPC implementation in libc is obsoleted. Old programs keep working
501 but new programs cannot be linked with the routines in libc anymore.
502 Programs in need of RPC functionality must be linked against TI-RPC.
503 The TI-RPC implementation is IPv6 enabled and there are other benefits.
505 Visible changes of this change include (obviously) the inability to link
506 programs using RPC functions without referencing the TI-RPC library and the
507 removal of the RPC headers from the glibc headers.
508 Implemented by Ulrich Drepper.
510 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
511 syncfs, setns, sendmmsg
513 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
514 yue_HK, lij_IT, mhr_RU
516 * New encodings: CP770, CP771, CP772, CP773, CP774
518 * New program sotruss to trace calls through PLTs
519 Implemented by Ulrich Drepper.
521 * The malloc hook implementation is marked deprecated and will be removed
522 from the default implementation in the next version. The design never
523 worked ever since the introduction of threads. Even programs which do
524 not create threads themselves can use multiple threads created internally.
528 * The following bugs are resolved with this release:
530 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
531 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
532 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
533 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
536 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
538 * POWER7 optimizations: memset, memcmp, strncmp
540 * New optimized string functions for x86-64: strnlen (SSE2),
541 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
542 Implemented by Ulrich Drepper.
546 * The following bugs are resolved with this release:
548 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
549 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
550 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
551 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
552 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
553 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
554 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
555 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
557 * New interfaces: pthread_getname_np, pthread_setname_np
559 * New Linux interface: recvmmsg
561 * STT_GNU_IFUNC implemented for Sparc by David Miller.
563 * The dynamic linker now recognizes supported ABI versions from the
564 EI_ABIVERSION field in the ELF header.
565 Implemented by Ulrich Drepper.
567 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
568 will not be used to fill in password fields in the passwd.byname replies.
569 Instead it is used to synthesize the shadow.byname table, should it be
570 missing. This is a useful mode in some installations involving Solaris.
571 Implemented by Ulrich Drepper.
573 * New locales: kok_IN, sq_MK, cv_RU
577 * The following bugs are resolved with this release:
579 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
580 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
581 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
582 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
583 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
584 10789, 10817, 10823, 10840, 10847
586 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
588 Implemented by Ulrich Drepper.
590 * Checking version of longjmp added that fails if an uninitialized stack
591 frame would be created. Implemented by Ulrich Drepper.
593 * STT_GNU_IFUNC is now supported in static executables.
594 Implemented by H.J. Lu.
596 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
598 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
599 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
600 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
601 Contributed by H.J. Lu.
603 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
604 Implemented by Ulrich Drepper.
606 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
608 Contributed by H.J. Lu.
610 * Support for fma instruction in AVX on x86-64.
611 Implemented by H.J. Lu and Ulrich Drepper.
613 * AVX support in x86-64 auditing support in ld.so.
614 Implemented by H.J. Lu.
616 * STB_GNU_UNIQUE support added.
617 Implemented by Ulrich Drepper.
619 * Implement second fallback mode for optimized DNS lookup for even more
620 broken environments. If two requests from the same port are not
621 handled correctly close the socket and open a new one before sending
622 the second request. The 'single-request-reopen' option in /etc/resolv.conf
623 can be used to select this mode right away, instead of rediscovering the
624 necessity is every process again.
625 Implemented by Ulrich Drepper.
627 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
628 Implemented by Adam Tkac.
630 * Optimized iconv conversions for S390x.
631 Implemented by Andreas Krebbel.
633 * Using condvars with PI mutexes is now more efficient due to kernel
634 support for requeueing to PI futexes. NPTL support added for x86-64.
635 Implemented by Ulrich Drepper.
637 * New locales: ps_AF, my_MM
641 * The following bugs are resolved with this release:
643 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
644 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
645 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
646 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
647 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
649 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
650 Implemented by Ulrich Drepper.
652 * New Linux interfaces: accept4, fallocate, fallocate64.
653 Implemented by Ulrich Drepper.
655 * Correct declarations of string function when used in C++ code. This
656 could lead to compile errors for invalid C++ code.
658 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
661 * New POSIX 2008 interface: psiginfo
662 Implemented by Ulrich Drepper.
664 * New ISO C++1x interfaces: quick_exit, at_quick_exit
665 Implemented by Ulrich Drepper.
667 * Support for selecting between multiple function definitions at runtime
668 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
670 * The libcrypt library can now use the hash function implementations in
671 NSS. Implemented by Ulrich Drepper.
673 * The malloc implementation can be compiled to be less memory efficient
674 but higher performing in multi-threaded programs.
675 Implemented by Ulrich Drepper.
677 * New locales: nan_TW@latin, ks_IN
679 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
680 Implemented by Ulrich Drepper.
682 * Extended printf hook support. It is possible to use user-defined types
683 and extend existing format specifiers.
684 Implemented by Ulrich Drepper.
686 * Handling for group shadow files has been added.
687 Implemented by Ulrich Drepper.
689 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
690 servers (the case, e.g., for some people using the built-in DNS
691 server in ADSL modems/routers). There is a once-per-process timeout
692 in case of a broken server. To avoid it, users can run nscd or put
693 'options single-request' in /etc/resolv.conf.
694 Implemented by Ulrich Drepper.
698 * The following bugs are resolved with this release:
700 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
701 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
702 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
703 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
704 6968, 6974, 6980, 6995, 7008, 7009, 7029
706 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
707 up at the same time. Implemented by Ulrich Drepper.
709 * TLS descriptors for LD and GD on x86 and x86-64.
710 Implemented by Alexandre Oliva.
712 * getaddrinfo now handles DCCP and UDPlite.
713 Implemented by Ulrich Drepper.
715 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
716 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
717 Implemented by Ulrich Drepper.
719 * New implementation of memmem, strstr, and strcasestr which is O(n).
720 Implemented by Eric Blake.
722 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
724 * Implement "e" option for popen to open file descriptor with the
725 close-on-exec flag set. Implemented by Ulrich Drepper.
727 * Implement "b" mode for fmemopen. In this mode writes writes don't
728 implicitly add a NUL byte and seeks from the end of the buffer really
729 use the buffer end, not the string length as the basis.
730 Implemented by Ulrich Drepper.
732 * Many functions, exported and internal, now atomically set the close-on-exec
733 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
735 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
737 Implemented by Pravin Satpute.
739 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
743 * The following bugs are resolved with this release:
745 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
746 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
747 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
748 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
749 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
750 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
751 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
753 * New locales: bo_CN, bo_IN, shs_CA.
755 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
757 * Sorting rules for some Indian languages (Devanagari and Gujarati).
758 Implemented by Pravin Satpute.
760 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
762 * nscd caches now all timeouts for DNS entries
763 Implemented by Ulrich Drepper.
765 * nscd is more efficient and wakes up less often.
766 Implemented by Ulrich Drepper.
768 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
769 vdprintf, and obstack_vprintf.
770 Implemented by Jakub Jelinek.
772 * Faster memset for x86-64.
773 Implemented by Harsha Jagasia and H.J. Lu.
775 * Faster memcpy on x86.
776 Implemented by Ulrich Drepper.
778 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
779 Implemented by Ulrich Drepper.
781 * Faster sqrt and sqrtf implemention for some PPC variants.
782 Implemented by Steven Munroe.
786 * The following bugs are resolved with this release:
788 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
789 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
790 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
791 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
792 5071, 5103, 5104, 5112, 5113, 5184, 5186
794 * More checking functions: fread, fread_unlocked, open*, mq_open.
795 Implemented by Jakub Jelinek and Ulrich Drepper.
797 * Extend fortification to C++. Implemented by Jakub Jelinek.
799 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
800 by not recognizing 'a' as a modifier when those specs are requested.
801 Implemented by Jakub Jelinek.
803 * PPC optimizations to math and string functions.
804 Implemented by Steven Munroe.
806 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
807 options to be passed. Implemented by Ulrich Drepper.
809 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
811 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
812 Implemented by Ulrich Drepper.
814 * Handle private futexes in the NPTL implementation.
815 Implemented by Jakub Jelinek and Ulrich Drepper.
817 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
818 Implemented by Roland McGrath and Ulrich Drepper.
820 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
822 * SHA-256 and SHA-512 based password encryption.
823 Implemented by Ulrich Drepper.
825 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
826 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
829 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
830 Implemented by Ulrich Drepper.
834 * The following bugs are resolved with this release:
836 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
837 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
838 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
839 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
840 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
841 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
842 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
845 * New Linux interfaces: epoll_pwait, sched_getcpu.
847 * New generic interfaces: strerror_l.
849 * nscd can now cache the services database. Implemented by Ulrich Drepper.
853 * The following bugs are resolved with this release:
855 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
856 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
857 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
858 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
859 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
860 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
861 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
862 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
863 3225, 3251, 3252, 3253, 3273
865 * For Linux, the sorting of addresses returned by getaddrinfo now also
866 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
867 Implemented by Ulrich Drepper.
869 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
870 Implemented by Ulrich Drepper.
872 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
874 * New iconv module for MIK. Contributed by Alexander Shopov.
876 * For sites with broken group and/or passwd database, the auto-propagate
877 option of nscd can prevent creating ID lookup entries from the results
878 of a name lookup and vice versa. This usually is no problem but some
879 site might have problems with the default behavior.
880 Implemented by Ulrich Drepper.
882 * Iterating over entire database in NIS can be slow. With the
883 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
884 to trade time for memory. The entire database will be read at once.
885 Implemented by Ulrich Drepper.
887 * The interfaces introduced in RFC 3542 have been implemented by
890 * Support for the new ELF hash table format was added by Ulrich Drepper.
892 * Support for priority inheritance mutexes added by Jakub Jelinek and
895 * Support for priority protected mutexes added by Jakub Jelinek.
897 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
898 or_IN, csb_PL, fy_NL, sr_ME.
902 * More overflow detection functions.
904 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
905 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
907 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
908 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
909 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
910 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
911 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
912 by Masahide Washizawa.
914 * It is now possible to install audit libraries for the dynamic linker using
915 LD_AUDIT. Implemented by Ulrich Drepper.
917 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
918 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
919 For a libc and libpthread that works well on Linux 2.4 kernels, we
920 recommend using the stable 2.3 branch.
922 * The new function open_wmemstream acts like open_memstream,
923 but uses a wchar_t wide character buffer.
925 * The new function ppoll is an improved version of poll, similar to pselect.
927 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
928 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
929 renameat, unlinkat, linkat, symlinkat, readlinkat.
931 * New Linux kernel system calls: unshare,
932 inotify_init, inotify_add_watch, inotify_rm_watch.
934 * The euidaccess function is now also known by the alias eaccess,
935 for compatibility with some other systems.
937 * Timezone data updated to 2006b version.
941 * The following bugs are resolved with this release:
943 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
944 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
945 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
946 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
947 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
948 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
950 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
952 * As of this release, GCC 4 can be used to compile the C Library.
954 * Timezone data updated to 2005m version.
958 * The following bugs are resolved with this release:
960 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
961 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
962 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
963 777, 787, 821, 822, 823, 825
965 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
969 * Support for RFC 3678. Real implementations exist only for Linux so far.
970 Implemented by Ulrich Drepper.
972 * nscd can now cache entries persistently. Expiring entries are reloaded.
973 For speedups the cache can be shared in memory with client processes.
974 Implemented by Ulrich Drepper.
976 * nscd can now perform SELinux checks.
977 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
979 * getaddrinfo queries are now cached. Canonical name lookup is performed
981 Implemented by Ulrich Drepper.
983 * The nothrow function attribute is used when headers are used by gcc when
984 compiling C code. This can avoid significant amounts of exception
987 * The malloc functions perform more error checking and are stricter when
988 it comes to reacting on errors. The default action is to terminate
989 the process after showing an error message. Implemented by Ulrich Drepper.
991 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
992 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
994 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
995 namespaces using the new function dlmopen(). This feature is of course,
996 like most other dynamic loading functionality, not available in statically
997 linked applications. Implemented by Ulrich Drepper.
999 * Low-overhead boundary checking variants of string and some stdio functions
1000 were added. These are to be used in conjunction with a gcc patch by
1001 Jakub Jelinek which adds calls to these functions if possible.
1002 Implemented by Jakub Jelinek and Ulrich Drepper.
1004 * Old code for several operating systems and machine architectures that
1005 have not been in working condition in a long time have been removed from
1006 the main source tree maintained by the GNU C Library's maintainers.
1007 These files are now reside in the separate `ports' source module
1008 that is usable as an add-on when building the library.
1012 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1013 interrogate the dynamic linker, compatible with the Solaris interface.
1015 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1016 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1018 * getifaddrs now uses the netlink interface on Linux to get its information.
1019 Implemented by Thorsten Kukuk.
1021 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1022 Implemented by Ulrich Drepper.
1024 * support for non-executable stacks on x86 has been added. Changes mostly
1027 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1030 * getaddrinfo now performs destination address selection according to
1035 * Thread-safe interfaces for many functions that access locale data
1036 were added in version 2.3, but these features were omitted from NEWS.
1037 Many functions have variants with an `_l' suffix that take a `locale_t'
1038 object as a parameter rather than consulting the current locale.
1039 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1040 create and maintain `locale_t' objects. Additionally, the new function
1041 `uselocale' sets "the current locale" (as used by functions not so
1042 parameterized) set for an individual thread. These features were added
1043 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1045 * The functions getresuid, getresgid, setresuid, and setresgid, which
1046 have long been available on Linux, are now declared in <unistd.h>
1047 and are now also available on the Hurd.
1049 * ELF thread-local storage support (TLS) now works on x86-64.
1051 * The new dynamic string token $LIB is expanded in shared library names.
1052 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1054 * Aldy Hernandez contributed complete software floating point support for
1055 PowerPC machines with no FPU.
1057 * fexecve is implemented on Linux.
1059 * The `btowc' function should work at least twice as fast due to
1060 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1062 * With approriate thread add-ons cancelable functions are now implemented
1063 in libc.so as well. No need to call the function in libpthread. This
1064 change allowed to finally disable the incorrect and expensive handling
1065 of weak definition in ld.so.
1067 * Yet more PLT entries in libc.so have been removed. We finally arrived
1068 at the bare minimum. Startup times improved appropriately.
1070 * Support for the new Linux/x86 system call interface was added. The
1071 AT_SYSINFO auxiliary vector entry is recognized and handled.
1075 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1078 * iconv (the program and the interface) now accepts empty names (excluding
1079 options like //TRANSLIT) to mean "use charset of current locale".
1081 * localedef can now transliterate characters in strings which are not in
1082 the provided charmap. The information from the input locale is used.
1084 * Prelinking support was added for ELF targets. This requires additional
1085 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1087 * Read-only stdio streams now use mmap to speed up operation by eliminating
1088 copying and buffer underflows. To use add 'm' to the mode string of
1089 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1091 * The malloc functions were completely rewritten by Wolfram Gloger based
1092 on Doug Lea's malloc-2.7.0.c.
1094 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1095 implementation of regex.
1097 * Bruno Haible upgraded the iconv and locale implementation to support
1100 * Contents of the LC_* and LANG environment variables in the CEN style are
1101 not recognized anymore. It never was used. Change by Ulrich Drepper.
1103 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1104 thread-local storage (TLS) ABI on some platforms.
1105 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1107 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1108 EUC-JISX0213, and TSCII.
1110 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1111 BSD-compatible interface for getting all network interface addresses.
1112 Implementation for IPv4 by Roland McGrath.
1114 * Loading of locale data is faster due to the introduction of a locale
1115 archive. Implemented by Roland McGrath and Ulrich Drepper.
1117 * Startup times are significantly reduced by not using exported functions
1118 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1121 * Steven Munroe contributed a port to PowerPC64/Linux.
1125 * The Hurd now uses the GNU libio implementation of stdio rather than the
1126 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1128 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1129 with the same behavior as the Linux system call of the same name.
1133 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1134 128-bit long double format.
1136 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1137 IBM1161, and IBM1162 charsets.
1139 * Andreas Jaeger contributed a port to x86-64/Linux.
1141 * Peter Bruin contributed a port to PowerPC/Hurd.
1143 * libc functions using I/O streams now can handle wide-oriented streams
1146 * optimizations in the dynamic linker. Binaries created by recent binutils
1147 versions start up quicker due to reduced time spent on relocations.
1149 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1153 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1154 asinh, atanh, j0 for the 128-bit long double format.
1156 * Bruno Haible updated all the code handling Unicode in some form to
1157 support Unicode 3.1.
1159 * Speed of regex for single-byte locales is back to previous levels.
1160 Patch by Isamu Hasegawa.
1162 * Alpha, SPARC, and IA-64 now also using floating stacks.
1164 * Startup time of internationalized applications greatly improved through
1165 iconv cache. Use iconvconfig to generate the cache file.
1166 Contributed by Ulrich Drepper.
1168 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1169 severe performance problems. Patch by David Mosberger.
1171 * The Hurd port got a lot more functionality like AIO, various stdio
1172 extensions, etc. Mainly done by Roland McGrath.
1174 * mtrace can now lookup symbols in shared libraries.
1178 * Intel's IA-64 math library is largely integrated. It provides fast and
1179 accurate implementatations for most basic and standard math functions
1180 in float, double, and long double format.
1182 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1183 and asin for the 96-bit long double format and asin, log, tan for the
1184 128-bit long double format.
1186 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1187 The basic double functions exist today. Contributed by Abraham Ziv
1188 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1189 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1191 * An asynchronous name lookup library was added. The interface is designed
1192 after POSIX AIO. The proposal was circulated beforehand to get comments.
1193 No negative ones came in. Implemented by Ulrich Drepper.
1195 * Port to S390/64bit contributed by Martin Schwidefsky
1196 <schwidefsky@de.ibm.com>.
1198 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1199 of functions for Linux/IA-64.
1201 * The RPC code is now thread safe. Threads can now use the same service
1202 of different services at the same time. Patch by Eric Norum
1203 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1205 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1206 family of functions for Linux/S390.
1208 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1209 of functions for Linux/x86.
1211 * Port to Linux/CRIS contributed by Axis Communications.
1215 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1216 we can now check for namespace violations and missing declarations. The
1217 result is that almost all headers are now Unix-compliant (as defined in
1218 the upcoming XPG6). The negative side is that some programs might need
1219 corrections, too, if they depend on the incorrect form of the headers in
1220 previous versions which defined too many symbols and included too many
1223 * regex now handles multibyte character sets correctly.
1224 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1226 * iconv (the program) does now conform to the upcoming XPG6 and handles
1227 charmaps. Instead of the charset names the path of charmaps can be
1228 provided and the conversion happens based on this data.
1229 Contributed by Ulrich Drepper.
1231 * The locale program now provides detailed information about the installed
1236 only lists the names of the supported locales
1240 provides details such as country, language, and codeset name.
1241 Contributed by Ulrich Drepper.
1245 * The gencat program now parses the input file according to the charset
1246 selected by the LC_CTYPE category. This is important for stateful
1247 character sets. To make generating catalogs easier there is a way
1248 to overwrite the charset selected by the locale: before the first
1249 message or $ quote line the catalog can contain a line like
1251 $ codeset=ISO-8859-2
1253 to select the charset (ISO-8859-2 in this case).
1255 Implemented by Shinya Hanataka and Ulrich Drepper.
1257 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1258 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1259 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1261 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1262 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1264 * The LANGUAGE environment variable is now ignored unless the locale is
1265 changed from the default "C" locale.
1267 * The usual bug fixes.
1271 * Greg McGary added runtime support for bounds checking using gcc's
1272 new -fbounded-pointers option. ix86 target is complete. PowerPC
1275 * Thorsten Kukuk added secure mode support to nscd.
1277 * The Berkeley db libraries have been removed.
1279 Related, the nss_db module is now in a separate package since it
1280 obviously requires a database library being available.
1282 * Wide character I/O streams implemented by Ulrich Drepper.
1284 * Functions from the extended socket API added by Ulrich Drepper.
1286 * Functions feenableexcept and fedisableexcept to control the
1287 behaviour of individual exceptions have been added by Andreas Jaeger.
1289 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1291 * The resolver code has been updated from bind 8.2.3-T5B which supports
1292 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1295 This change could in some situations effect backward compatibility. Since
1296 now `_res' is a thread-local instead of a global variable, modifying it
1297 in one thread does not have any effect in other threads.
1299 The resolver library was also extended to allow IPv6 as the transport
1300 protocol for the requests. This work was done by Stig Venaas.
1302 * Compatibility code for K&R C compilers has been removed from the
1303 header files. A ISO C compiler is needed to use the library
1304 (conforming to either C89 or C99 standard).
1306 * Complete rewrite of the localedef program to support multibyte character
1307 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1308 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1309 Implemented by Ulrich Drepper.
1311 Bruno Haible significantly improved the generation and use of the data
1312 structures for the wide character tables.
1314 * Plural handling in gettext implemented by Ulrich Drepper.
1316 * The utmp daemon has been removed.
1318 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1320 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1323 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1325 * POSIX barriers implemented by Kaz Kylheku.
1327 * POSIX spawn function family implemented by Ulrich Drepper.
1329 * POSIX spinlocks are now available.
1331 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1333 * the configure option --enable-kernel=X.Y.Z allows to strip out
1334 compatibility for kernel versions before X.Y.Z. This is currently only
1335 implemented for Linux.
1337 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1338 field sin6_scope_id. This means that all programs using IPv6 should be
1339 recompiled. Don't expect binary compatibility with previous glibc
1342 * various conversion modules for IBM character sets contributed by
1345 * IA-64 port by Jes Sorensen and HJ Lu.
1359 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1361 * New xdr functions are added; some rpc functions are now 64bit clean.
1363 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1365 * Fixed known incompatibilities with glibc 2.0.
1367 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1369 * Optimized a number of functions (especially the ELF dynamic loader).
1371 * Update timezone data files.
1373 * lots of charmaps corrections
1375 * some new locale definitions and charmaps
1380 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1381 conform to POSIX member type requirements. Symbol versions have been
1382 adjusted as needed within the library, and for direct use by applications,
1383 but there is potential for problems if third-party libraries use
1384 struct timeval as part of their interface. This does not present
1385 a problem for X and other "essential" system libraries.
1387 * An additional locale model to support C++ Standard Library locale
1388 model and probably more was implemented by Ulrich Drepper.
1390 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1393 * Miles Bader provided the `argp' function family to support hierachical
1394 command line argument parsing, layered on top of getopt.
1396 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1398 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1401 * scanf recognizes the %a and %A format for scanning floating point numbers.
1403 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1404 information and interfaces for the available integer types.
1406 * about 130 new math functions were added to implement the ISO C9x math
1409 * the new header <complex.h> contains definitions of the complex math
1410 functions from ISO C 9X.
1412 * the new header <tgmath.h> defines generic macros to use complex or
1413 real valued functions.
1415 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1417 * Andreas Jaeger provided a test suite for the math library.
1419 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1421 * Ulrich Drepper added character set conversion functions (iconv).
1423 * Optimized string functions have been added.
1425 * The localedata addon is now part of glibc.
1427 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1429 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1430 daemon for NSS (nscd).
1432 Missing a better place here are some numbers on improvements. Under
1433 Linux 2.1.125 un-tar-ing the kernel sources takes
1437 using local files 12.19s 6.88s 22.91s
1439 using NIS 13.92s 8.91s 26.34s
1441 using NIS & nscd 10.37s 7.34s 25.30s
1443 using NIS+ 27.57s 30.37s 640.46s
1445 using NIS+ & nscd 10.25s 7.83s 26.51s
1447 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1449 Keep in mind that non-namelookup related operations dominate above times.
1450 It was just a common complain that using NIS+ unpacking the kernel is
1453 [1] The old nscd implementation is not available anymore since it was
1454 distributed with glibc up to version 2.0.98 and thus is now replaced.
1456 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1458 * Mark Kettenis provided a Hesiod NSS module.
1460 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1461 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1463 * rcmd can now handle netgroups (Dick Streefland).
1465 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1468 * Support for the IPv6 protocol has been added to the socket API, as per the
1469 latest draft standards.
1471 * Support for Linux 2.2 has been added.
1473 * Interface changes relative to the latest 2.0.x release:
1474 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1475 addseverity NEW: Unix98
1476 alphasort64 NEW: LFS
1477 argp_err_exit_status NEW: argp, GNU ext
1478 argp_error NEW: argp, GNU ext
1479 argp_failure NEW: argp, GNU ext
1480 argp_help NEW: argp, GNU ext
1481 argp_parse NEW: argp, GNU ext
1482 argp_program_bug_address NEW: argp, GNU ext
1483 argp_program_version NEW: argp, GNU ext
1484 argp_program_version_hook NEW: argp, GNU ext
1485 argp_state_help NEW: argp, GNU ext
1486 argp_usage NEW: argp, GNU ext
1487 authdes_create NEW: Secure RPC
1488 authdes_getucred NEW: Secure RPC
1489 authdes_pk_create NEW: Secure RPC
1490 backtrace NEW: GNU ext.
1491 backtrace_symbols NEW: GNU ext.
1492 backtrace_symbols_fd NEW: GNU ext.
1494 cacosf NEW: ISO C 9x
1495 cacosh NEW: ISO C 9x
1496 cacoshf NEW: ISO C 9x
1497 cacoshl NEW: ISO C 9x
1498 cacosl NEW: ISO C 9x
1505 casinf NEW: ISO C 9x
1506 casinh NEW: ISO C 9x
1507 casinhf NEW: ISO C 9x
1508 casinhl NEW: ISO C 9x
1509 casinl NEW: ISO C 9x
1511 catanf NEW: ISO C 9x
1512 catanh NEW: ISO C 9x
1513 catanhf NEW: ISO C 9x
1514 catanhl NEW: ISO C 9x
1515 catanl NEW: ISO C 9x
1516 cbc_crypt NEW: Secure RPC
1520 ccoshf NEW: ISO C 9x
1521 ccoshl NEW: ISO C 9x
1527 cimagf NEW: ISO C 9x
1528 cimagl NEW: ISO C 9x
1529 clearerr_locked REMOVED
1530 clntunix_create NEW: sunrpc ext
1532 clog10 NEW: ISO C 9x
1533 clog10f NEW: ISO C 9x
1534 clog10l NEW: ISO C 9x
1544 cprojf NEW: ISO C 9x
1545 cprojl NEW: ISO C 9x
1547 crealf NEW: ISO C 9x
1548 creall NEW: ISO C 9x
1553 csinhf NEW: ISO C 9x
1554 csinhl NEW: ISO C 9x
1557 csqrtf NEW: ISO C 9x
1558 csqrtl NEW: ISO C 9x
1562 ctanhf NEW: ISO C 9x
1563 ctanhl NEW: ISO C 9x
1565 des_setparity NEW: Secure RPC
1566 ecb_crypt NEW: Secure RPC
1567 endutxent NEW: Unix98
1569 exp10f NEW: ISO C 9x
1570 exp10l NEW: ISO C 9x
1574 fattach NEW: STREAMS
1575 fdetach NEW: STREAMS
1579 feclearexcept NEW: ISO C 9x
1580 fegetenv NEW: ISO C 9x
1581 fegetexceptflag NEW: ISO C 9x
1582 fegetround NEW: ISO C 9x
1583 feholdexcept NEW: ISO C 9x
1585 feraiseexcept NEW: ISO C 9x
1586 ferror_locked REMOVED
1587 fesetenv NEW: ISO C 9x
1588 fesetexceptflag NEW: ISO C 9x
1589 fesetround NEW: ISO C 9x
1590 fetestexcept NEW: ISO C 9x
1591 feupdateenv NEW: ISO C 9x
1592 fflush_locked REMOVED
1596 fgets_unlocked NEW: GNU ext.
1597 fileno_locked REMOVED
1609 fputc_locked REMOVED
1610 fputs_unlocked NEW: GNU ext.
1611 fread_unlocked NEW: GNU ext.
1616 fstatvfs NEW: Unix98
1620 ftruncate64 NEW: LFS
1622 fwrite_unlocked NEW: GNU ext.
1623 gai_strerror NEW: IPv6
1627 getchar_locked REMOVED
1629 getdate_err NEW: Unix98
1630 getdate_r NEW: GNU ext.
1632 getnameinfo NEW: IPv6
1633 getnetname NEW: Secure RPC
1634 getpmsg NEW: STREAMS
1635 getpt NEW: Unix98 PTY
1636 getrlimit64 NEW: LFS
1637 getutxent NEW: Unix98
1638 getutxid NEW: Unix98
1639 getutxline NEW: Unix98
1640 glob64 NEW: GNU ext.
1641 globfree64 NEW: GNU ext.
1642 gnu_get_libc_release NEW: GNU ext.
1643 gnu_get_libc_version NEW: GNU ext.
1644 grantpt NEW: Unix98 PTY
1645 host2netname NEW: Secure RPC
1647 iconv_close NEW: iconv
1648 iconv_open NEW: iconv
1649 if_freenameindex NEW: IPv6
1650 if_indextoname NEW: IPv6
1651 if_nameindex NEW: IPv6
1652 if_nametoindex NEW: IPv6
1653 in6addr_any NEW: IPv6
1654 in6addr_loopback NEW: IPv6
1655 inet6_isipv4mapped NEW: IPv6
1656 isastream NEW: STREAMS
1657 iswblank NEW: GNU ext.
1658 key_decryptsession NEW: Secure RPC
1659 key_decryptsession_pk NEW: Secure RPC
1660 key_encryptsession NEW: Secure RPC
1661 key_encryptsession_pk NEW: Secure RPC
1662 key_gendes NEW: Secure RPC
1663 key_get_conv NEW: Secure RPC
1664 key_secretkey_is_set NEW: Secure RPC
1665 key_setnet NEW: Secure RPC
1666 key_setsecret NEW: Secure RPC
1667 llrint NEW: ISO C 9x
1668 llrintf NEW: ISO C 9x
1669 llrintl NEW: ISO C 9x
1670 llround NEW: ISO C 9x
1671 llroundf NEW: ISO C 9x
1672 llroundl NEW: ISO C 9x
1677 lrintf NEW: ISO C 9x
1678 lrintl NEW: ISO C 9x
1679 lround NEW: ISO C 9x
1680 lroundf NEW: ISO C 9x
1681 lroundl NEW: ISO C 9x
1683 makecontext NEW: Unix98
1684 mempcpy NEW: GNU ext.
1687 modify_ldt NEW: kernel
1691 nearbyint NEW: ISO C 9x
1692 nearbyintf NEW: ISO C 9x
1693 nearbyintl NEW: ISO C 9x
1694 netname2host NEW: Secure RPC
1695 netname2user NEW: Secure RPC
1696 nexttoward NEW: ISO C 9x
1697 nexttowardf NEW: ISO C 9x
1698 nexttowardl NEW: ISO C 9x
1702 passwd2des NEW: Secure RPC
1704 pow10f NEW: GNU ext.
1705 pow10l NEW: GNU ext.
1708 printf_size NEW: GNU ext.
1709 printf_size_info NEW: GNU ext.
1710 profil_counter REMOVED
1711 pthread_mutexattr_getkind_np REPLACED
1712 pthread_mutexattr_setkind_np REPLACED
1713 ptsname NEW: Unix98 PTY
1714 ptsname_r NEW: Unix98 PTY
1716 putchar_locked REMOVED
1717 putgrent NEW: GNU ext.
1719 putpmsg NEW: STREAMS
1720 pututxline NEW: Unix98
1724 readdir64_r NEW: LFS
1725 remquo NEW: ISO C 9x
1726 remquof NEW: ISO C 9x
1727 remquol NEW: ISO C 9x
1729 roundf NEW: ISO C 9x
1730 roundl NEW: ISO C 9x
1732 scalbln NEW: ISO C 9x
1733 scalblnf NEW: ISO C 9x
1734 scalblnl NEW: ISO C 9x
1736 sendfile NEW: kernel
1737 setcontext NEW: Unix98
1738 setrlimit64 NEW: LFS
1739 setutxent NEW: Unix98
1741 sigignore NEW: Unix98
1742 sigqueue NEW: POSIX.1b
1743 sigrelse NEW: Unix98
1744 sigset NEW: POSIX.1b
1745 sigtimedwait NEW: POSIX.1b
1746 sigwaitinfo NEW: POSIX.1b
1747 sincos NEW: GNU ext.
1748 sincosf NEW: GNU ext.
1749 sincosl NEW: GNU ext.
1753 strcasestr NEW: GNU ext.
1754 strtoimax NEW: ISO C 9x
1755 strtoumax NEW: ISO C 9x
1756 strverscmp NEW: GNU ext.
1757 svcauthdes_stats NEW: Secure RPC
1758 svcunix_create NEW: sunrpc etx
1759 svcunixfd_create NEW: sunrpc ext
1760 swapcontext NEW: Unix98
1761 tcgetsid NEW: Unix98 PTY
1762 tdestroy NEW: GNU ext.
1763 tgamma NEW: ISO C 9x
1764 tgammaf NEW: ISO C 9x
1765 tgammal NEW: ISO C 9x
1769 truncf NEW: ISO C 9x
1770 truncl NEW: ISO C 9x
1772 unlockpt NEW: Unix98 PTY
1773 updwtmpx NEW: Unix98
1774 user2netname NEW: Secure RPC
1775 utmpxname NEW: Unix98
1776 versionsort NEW: GNU ext.
1777 versionsort64 NEW: GNU ext.
1779 wcscasecmp NEW: GNU ext.
1780 wcsncasecmp NEW: GNU ext.
1781 wcsnlen NEW: GNU ext.
1782 wcstoimax NEW: ISO C 9x
1783 wcstoll NEW: ISO C 9x
1784 wcstoull NEW: ISO C 9x
1785 wcstoumax NEW: ISO C 9x
1787 wordexp NEW: POSIX.2
1788 wordfree NEW: POSIX.2
1789 write_profiling REMOVED
1790 xdecrypt NEW: Secure RPC
1791 xdr_authdes_cred NEW: Secure RPC
1792 xdr_authdes_verf NEW: Secure RPC
1793 xdr_cryptkeyarg NEW: Secure RPC
1794 xdr_cryptkeyarg2 NEW: Secure RPC
1795 xdr_cryptkeyres NEW: Secure RPC
1796 xdr_getcredres NEW: Secure RPC
1797 xdr_key_netstarg NEW: Secure RPC
1798 xdr_key_netstres NEW: Secure RPC
1799 xdr_keybuf NEW: Secure RPC
1800 xdr_keystatus NEW: Secure RPC
1801 xdr_netnamestr NEW: Secure RPC
1802 xdr_sizeof NEW: Secure RPC
1803 xdr_unixcred NEW: sunrpc ext
1804 xencrypt NEW: Secure RPC
1805 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1816 * inet_ntoa is thread-safe
1818 * updwtmp is moved from libutil to libc
1820 * rewrite of cbrt function
1822 * update of timezone data
1836 * add atoll function
1838 * fix complex problems in Berkeley DB code
1840 * fix math functions
1844 * fixed lots of header problems (especially Linux/GNU specific)
1846 * dynamic loader preserves all registers
1848 * Roland McGrath provided support for handling of auxiliary objects in
1849 the ELF dynamic loader.
1851 * support for parallel builds is improved
1855 * GNU extensions are no longer declared by default. To enable them you
1856 must define the macro `_GNU_SOURCE' in your program or compile with
1859 * The library has changed from using GNU ld symbol aliases to using weak
1860 symbols where available. The ELF object file format supports weak
1861 symbols; GNU ld also supports weak symbols in the a.out format. (There
1862 is also now support for other GNU ld extensions in ELF. Use the
1863 `--with-elf' option to configure to indicate you have ELF, and
1864 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1865 of many files which contained only symbol aliases, reducing the size of
1866 the source and the compiled library; many other files were renamed to
1867 less cryptic names previously occupied by the symbol alias files.
1868 There is a new header file <elf.h> for programs which operate on
1869 files in the ELF format.
1871 * Converted to Autoconf version 2, so `configure' has more options.
1872 Run `configure --help' to see the details.
1874 * The library can now be configured to build profiling, highly-optimized
1875 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1876 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1877 `configure' enable building these extra libraries. The shared library is
1878 built by default when using both ELF and GNU ld. When shared libraries
1879 are enabled, the new library `-ldl' is available for arbitrary run-time
1880 loading of shared objects; its interface is defined in <dlfcn.h>. The
1881 new header file <link.h> gives access to the internals of the run-time
1882 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1883 application of same name on other systems and it provides information
1884 about dynamically linked binaries.
1886 * The C library now provides the run-time support code for profiling
1887 executables compiled with `-pg'. Programs can control the profiling code
1888 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1889 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1890 the support for this file format was contributed by David Mosberger-Tang.
1892 * The math code has been replaced with a math library based on fdlibm from
1893 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1894 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1895 functions. The math functions now reside in a separate library, so
1896 programs using them will need to use `-lm' their linking commands.
1898 * John C. Bowman contributed optimized ix87 assembler inline functions.
1900 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1901 mechanism similar to that found in Solaris 2. This is now used for the
1902 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1903 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1904 file controls what services are used for each individual database. This
1905 works by loading shared libraries with names specified in `nsswitch.conf',
1906 so service modules can be changed or added at any time without even
1907 relinking any program. Currently there are the file, db, and NIS based
1908 NSS services available.
1910 * The new functions `strtoq' and `strtouq' parse integer values from
1911 strings, like `strtol' and `strtoul', but they return `long long int' and
1912 `unsigned long long int' values, respectively (64-bit quantities).
1914 * The new functions `strtof' and `strtold' parse floating-point values from
1915 strings, like `strtod', but they return `float' and `long double' values,
1916 respectively (on some machines `double' and `long double' are the same).
1918 * Ulrich Drepper has contributed new implementations of the floating-point
1919 printing and reading code used in the `printf' family of functions and
1920 `strtod', `strtof', and `strtold'. These new functions are perfectly
1921 accurate, and much faster than the old ones.
1923 * The implementation of the POSIX locale model was completely rewritten by
1924 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1925 to compile the POSIX locale definition.
1927 * The former dummy implementations of the strcoll and strxfrm function are
1928 now replaced by fully functional code contributed by Ulrich Drepper. The
1929 collation information comes from the POSIX locale definitions.
1931 * The new header <langinfo.h> defines an interface for accessing
1932 various locale-dependent data (using the locale chosen with `setlocale').
1934 * Ulrich Drepper has contributed a new suite of functions for operation on
1935 wide-character and multibyte-character strings, in <wchar.h>;
1936 and classification and case conversion of wide characters, in <wctype.h>.
1937 These new functions are conforming to the ISO C, Amendement 1 specification.
1939 * There is now a second implementation of the standard I/O library available.
1940 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1941 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1943 * You can now use positional parameter specifications in format strings
1944 for the `printf' and `scanf' families of functions. For example,
1945 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1946 ``Number 6, Mr Jones''. This is mainly useful when providing different
1947 format strings for different languages, whose grammars may dictate
1948 different orderings of the values being printed. To support this
1949 feature, the interface for `register_printf_handler' has changed; see
1950 the header file <printf.h> for details.
1952 * The `printf' and `scanf' families of functions now understand a new
1953 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1954 to group numbers as indicated by the locale; for `scanf' and friends, this
1955 says to accept as valid only a number with all the proper grouping
1956 separators in the right places. In the default "C" locale, numbers are
1957 not grouped; but locales for specific countries will define the usual
1958 conventions (i.e. separate thousands with `,' in the US locale).
1960 * The pgrp functions have been regularized, slightly incompatibly but much
1961 less confusingly. The core functions are now `getpgid' and `setpgid',
1962 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1963 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1964 provided for compatibility. There is no longer an incompatible `getpgrp'
1965 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1967 * The new header file <fts.h> and suite of functions simplify programs that
1968 operate on directory trees. This code comes from 4.4 BSD.
1970 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1971 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1972 NSS scheme used in glibc.
1974 * There is a new malloc debugging hook `__memalign_hook'.
1976 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1977 `unsigned int' in <sys/types.h>. These are for compatibility only and
1978 their use is discouraged.
1980 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1981 done differently, so that it works even without GNU ld.
1983 * New function `euidaccess' checks allowed access to a file like `access',
1984 but using the effective IDs instead of the real IDs.
1986 * The time zone data files have been updated for the latest and greatest
1987 local time conventions of the countries of the world.
1989 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1992 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1993 for formatting floating-point numbers. They are provided only for
1994 compatibility; new programs should use `sprintf' instead. There are
1995 also equivalent function for the `long double' floating-point type and
1996 all functions also exist in a reentrant form.
1998 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1999 functions for maintaining the login-record files (primarily of use to
2000 system programs such as `login'), and convenient functions for
2001 allocating and initializing a pseudo-terminal (pty) device.
2003 * Ulrich Drepper has contributed new support for System V style
2004 shared memory and IPC on systems that support it.
2006 * Ulrich Drepper has contributed several miscellaneous new functions found
2007 in System V: The `hsearch' family of functions provide an effective
2008 implementation of hash tables; `a64l' and `l64a' provide a very simple
2009 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2012 * Ulrich Drepper has contributed new reentrant counterparts for the
2013 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2015 * Ulrich Drepper has contributed new, highly-optimized versions of several
2016 string functions for the i486/Pentium family of processors.
2018 * Ulrich Drepper has updated the Linux-specific code, based largely
2019 on work done in Hongjiu Lu's version of GNU libc for Linux.
2020 The GNU library now supports Linux versions 2.0.10 and later,
2021 using the ELF object file format (i[3456]86-*-linux).
2023 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2025 * David Mosberger-Tang and Richard Henderson have ported the C library
2026 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2027 dynamic linking support for ELF/Alpha.
2029 * Richard Henderson contributed several Alpha optimized assembler function
2030 for arithmetic and string handling.
2032 * Ulrich Drepper has contributed a new set of message catalog functions to
2033 support multiple languages using the <libintl.h> interface, for use with
2034 his new package GNU gettext. Translation volunteers have contributed
2035 catalogs of the library's messages in Spanish, German, and Korean.
2037 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2038 program and the `catgets' function for reading the catalog files it
2039 creates. (The <libintl.h> interface is preferred; we include the
2040 <nl_types.h> interface using `catgets' only for source compatibility with
2041 programs already written to use it.)
2043 * New header file <values.h> gives SVID-compatible names for <limits.h>
2046 * Various new macros, declarations, and small header files for compatibility
2049 * New function `group_member' is a convenient way to check if a process has
2050 a given effective group ID.
2052 * When using GCC 2.7 and later, the socket functions are now declared in a
2053 special way so that passing an argument of type `struct sockaddr_in *',
2054 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2055 `struct sockaddr *' type, does not generate a type-clash warning.
2057 * New function `error' declared in header file <error.h> is a convenient
2058 function for printing error messages and optionally exiting; this is the
2059 canonical function used in GNU programs. The new functions `err', `warn',
2060 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2061 doing the same thing.
2063 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2064 POSIX.2 `glob' function to do ~ and {...} expansion.
2066 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2067 `clearenv' which is used in POSIX.9 is also available.
2069 * New function `getsid' returns session ID number on systems that support it.
2071 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2072 files <db.h> and <mpool.h> provide a rich set of functions for several
2073 types of simple databases stored in memory and in files, and <ndbm.h> is
2074 an old `ndbm'-compatible interface using the `db' functions. Link with
2075 `-ldb' to get these functions.
2077 * New macro `strdupa' copies a string like `strdup', but uses local stack
2078 space from `alloca' instead of dynamic heap space from `malloc'.
2080 * New function `strnlen' is like `strlen' but searches only a given maximum
2081 number of characters for the null terminator. `stpncpy', `strndup' and
2082 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2085 * New function `statfs' in header <sys/statfs.h>.
2087 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2088 provide convenient functions for operating on blocks of null-terminated
2091 * A new suite of functions in <utmp.h> handle all the details of reading
2092 and writing the utmp file.
2094 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2097 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2098 completely POSIX compliant and also implemented the extended functionality
2099 to handle alternate digit representation and alternate era date formats.
2101 * Ulrich Drepper provided an implementation of the `strptime' function
2102 defined in XPG4.2 which transforms a string into a `struct tm' value.
2104 * Paul Eggert provided the tzselect shell script as part of the timezone
2105 code. The shell script makes it easy to select the correct timezone
2108 * The implementation of the malloc family of functions is completely replaced
2109 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2110 The implementation uses the mmap function (if available) and it is
2111 optimized for the use in multi threaded programs.
2113 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2114 functions. This new functionality is usable by specifying a special
2115 salt string and it is compatible with implementation on *BSD systems.
2117 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2118 `getsubopt' to handle second level command line options, `bsd_signal'
2119 to access BSD style `signal' functionality, the obsolete `regexp' style
2122 * the `lchown' function is available on system which support this
2125 * The implementation of the shadow password handling function was contributed
2128 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2130 * POSIX.1g support was added. The <sys/select.h> header is available,
2131 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2132 implementation of `getaddrinfo'.
2136 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2138 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2139 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2141 * The new function `daemon' from 4.4 BSD is useful for server programs that
2142 want to put themselves in the background.
2144 * Joel Sherrill has contributed support for several standalone boards that
2145 run without an operating system.
2147 * `printf', `scanf' and friends now accept a `q' type modifier for long
2148 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2150 * All of the code taken from BSD (notably most of the math and networking
2151 routines) has been updated from the BSD 4.4-Lite release.
2153 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2155 * The new functions `getdomainname' and `setdomainname' fetch or change the
2156 YP/NIS domain name. These are system calls which exist on systems which
2159 * The time zone data files have been updated for the latest international
2162 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2163 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2167 * The C library now includes support for Sun RPC, from Sun's free
2168 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2169 are included. (There is still no support for YP.)
2171 * Tom Quinn has contributed a port of the C library to SGI machines running
2172 Irix 4 (mips-sgi-irix4).
2174 * The new `lockf' function is a simplified interface to the locking
2175 facilities of `fcntl', included for compatibility.
2177 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2179 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2181 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2184 * The error message printed by `assert' for a failed assertion now includes
2185 the name of the program (if using GNU ld) and the name of the calling
2186 function (with versions of GCC that support this).
2188 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2190 * The library now includes the <sys/mman.h> header file and memory
2191 management functions `mmap', `munmap', `mprotect', `msync', and
2192 `madvise', on systems that support those facilities.
2194 * The interface for `mcheck' has changed slightly: the function called to
2195 abort the program when an allocation inconsistency is detected now takes
2196 an argument that indicates the type of failure. The new function
2197 `mprobe' lets you request a consistency check for a particular block at
2198 any time (checks are normally done only when you call `free' or `realloc'
2201 * It is now possible to easily cross-compile the C library, building on one
2202 system a library to run on another machine and/or operating system. All
2203 you need to do is set the variable `HOST_CC' in `configparms' to the
2204 native compiler for programs to run on the machine you are building on (a
2205 few generator programs are used on Unix systems); set `CC' to the
2208 * The new function `fexecve' (only implemented on the GNU system) executes
2209 a program file given a file descriptor already open on the file.
2213 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2214 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2216 * You can set the variable `libprefix' in `configparms' to specify a prefix
2217 to be prepended to installed library files; this makes it easy to install
2218 the GNU C library to be linked as `-lgnuc' or whatever.
2220 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2221 copies a limited number of characters from a string, and returns the
2222 address of the last character written.
2224 * You no longer need to check for whether the installed `stddef.h' is
2225 compatible with the GNU C library. configure now checks for you.
2227 * You can now define a per-stream `fileno' function to convert the
2228 stream's cookie into an integral file descriptor.
2230 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2231 allocates zero bytes of storage, and returns a unique pointer which
2232 you can pass to `realloc' or `free'. The behavior is undefined if
2233 you dereference this pointer.
2235 * The C library now runs on Sony NEWS m68k machines running either
2236 NewsOS 3 or NewsOS 4.
2238 * The new `syscall' function is a system-dependent primitive function
2239 for invoking system calls. It has the canonical behavior on Unix
2240 systems, including unreliable return values for some calls (such as
2241 `pipe', `fork' and `getppid').
2243 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2244 to `EAGAIN', which is the preferred name. On systems whose kernels
2245 use two distinct codes, the C library now translates EWOULDBLOCK to
2246 EAGAIN in every system call function.
2250 * The GNU C Library Reference Manual is now distributed with the library.
2251 `make dvi' will produce a DVI file of the printed manual.
2252 `make info' will produce Info files that you can read on line using C-h i
2253 in Emacs or the `info' program.
2254 Please send comments on the manual to bug-glibc-manual@gnu.org.
2256 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2258 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2260 * Jason Merrill has contributed a port to the Sequent Symmetry running
2261 Dynix version 3 (i386-sequent-dynix).
2263 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2264 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2266 * New function `memory_warnings' lets you arrange to get warnings when
2267 malloc is running out of memory to allocate, like Emacs gives you.
2269 * The C library now contains the relocating allocator used in Emacs 19 for
2270 its editing buffers. This allocator (ralloc) minimizes allocation
2271 overhead and fragmentation by moving allocated regions around whenever it
2272 needs to. You always refer to a ralloc'd region with a "handle" (a
2273 pointer to a pointer--an object of type `void **').
2275 * There is a new `printf' format: `%m' gives you the string corresponding
2276 to the error code in `errno'.
2278 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2279 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2280 pass, the `a' modifier says to fill in a `char **' you pass with a
2283 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2284 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2285 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2287 * `mkstemp' is a traditional Unix function to atomically create and open a
2288 uniquely-named temporary file.
2292 * The standard location for the file that says what the local timezone is
2293 has changed again. It is now `/usr/local/etc/localtime' (or more
2294 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2296 * The distribution no longer contains any files with names longer than 14
2299 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2300 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2302 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2306 * The configuration process has changed quite a bit. The `configure'
2307 script is now used just like the configuration scripts for other GNU
2308 packages. The `sysdeps' directory hierarchy is much rearranged.
2309 The file `INSTALL' explains the new scheme in detail.
2311 * The header files no longer need to be processed into ANSI C and
2312 traditional C versions. There is just one set of files to install, and
2313 it will work with ANSI or old C compilers (including `gcc -traditional').
2315 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2316 MIPS DECStation running Ultrix 4.
2318 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2319 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2320 made itself into a shared library.
2322 * Yet further improved support for the i386, running 4.3 BSD-like systems
2323 (such as Mach 3 with the Unix single-server), or System V.
2325 * New function `strncasecmp' to do case-insensitive string comparison
2326 with limited length.
2328 * New function `strsep' is a reentrant alternative to `strtok'.
2330 * New functions `scandir' and `alphasort' for searching directories.
2332 * New function `setenv' is a better interface to `putenv'.
2334 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2335 function for traversing a directory tree.
2337 * The GNU obstack package is now also part of the C library.
2338 The new function `open_obstack_stream' creates a stdio stream that
2339 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2340 formatted output directly to an obstack.
2342 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2343 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2345 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2347 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2348 things to your strings.
2350 * There are some new test programs: test-fseek, testmb, and testrand.
2352 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2353 These ports are not finished, but are a good starting place for really
2354 supporting those systems.
2356 * `/etc/localtime' is now the standard location for the file that says what
2357 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2358 This follows the general principle that `/etc' is the place for all local
2359 configuration files.
2361 * The C library header files now use `extern "C"' when used by the C++
2362 compiler, so the C library should now work with C++ code.
2364 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2365 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2368 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2369 function which uses the `merge sort' algorithm, and is said to be
2370 significantly faster than the old GNU `qsort' function. Merge sort is
2371 now the standard `qsort' function. The new algorithm can require a lot
2372 of temporary storage; so, the old sorting function is called when the
2373 required storage is not available.
2375 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2376 provides the Unix `crypt' function, plus some other entry points.
2378 * The code and header files taken from 4.4 BSD have been updated with the
2379 latest files released from Berkeley.
2381 ----------------------------------------------------------------------
2382 Copyright information:
2384 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2386 Permission is granted to anyone to make or distribute verbatim copies
2387 of this document as received, in any medium, provided that the
2388 copyright notice and this permission notice are preserved,
2389 thus giving the recipient permission to redistribute in turn.
2391 Permission is granted to distribute modified versions
2392 of this document, or of portions of it,
2393 under the above conditions, provided also that they
2394 carry prominent notices stating who last changed them.
2397 version-control: never
git.samba.org / jlayton / glibc.git / blob