1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2013 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 10060, 10062, 10357, 11120, 11561, 12723, 13550, 13889, 13951, 13988,
13 14142, 14176, 14200, 14280, 14293, 14317, 14327, 14478, 14496, 14686,
14 14812, 14888, 14920, 14964, 14981, 14982, 14985, 14994, 14996, 15003,
15 15006, 15007, 15020, 15023, 15036, 15054, 15055, 15062, 15078, 15160,
16 15214, 15232, 15234, 15283, 15285, 15287, 15304, 15305, 15307, 15309,
17 15327, 15330, 15335, 15336, 15337, 15342, 15346, 15361, 15366, 15394,
20 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
23 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
24 fixed (Bugzilla #15330).
26 * Add support for calling C++11 thread_local object destructors on thread
27 and program exit. This needs compiler support for offloading C++11
28 destructor calls to glibc.
30 * Improved worst case performance of libm functions with double inputs and
33 * Support for priority inherited mutexes in pthread condition variables on
34 non-x86 architectures.
36 * Added a benchmark framework to track performance of functions in glibc.
38 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
39 It is based on draft TS 18661 and currently enabled as a GNU extension.
43 * The following bugs are resolved with this release:
45 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
46 9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
47 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
48 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
49 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
50 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298, 14303,
51 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417,
52 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519,
53 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576,
54 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648,
55 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743,
56 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805,
57 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835,
58 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872, 14879,
59 14889, 14893, 14898, 14914.
61 * Optimization of memcpy for MIPS.
63 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
64 EMFILE has been fixed (Bugzilla #14889).
66 * The add-on ports collection is now distributed in the "ports" subdirectory
67 of the main GNU C Library distribution, rather than separately.
69 * Port to ARM AArch64 contributed by Linaro.
71 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
72 Optimized versions of memcpy, memset, and memcmp added for System z10 and
74 Implemented by Andreas Krebbel.
76 * The new function secure_getenv allows secure access to the environment,
77 returning NULL if running in a SUID/SGID process. This function replaces
78 the internal function __secure_getenv.
80 * SystemTap static probes have been added into the dynamic linker.
81 Implemented by Gary Benson.
83 * Optimizations of string functions strstr, strcasestr and memmem.
84 Implemented by Maxim Kuvyrkov.
86 * The minimum Linux kernel version that this version of the GNU C Library
87 can be used with is 2.6.16.
89 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
90 powerpc POWER7. Implemented by Will Schmidt.
92 * New configure option --disable-nscd builds the C library such that it
93 never attempts to contact the Name Service Caching Daemon (nscd).
94 New configure option --disable-build-nscd avoids building nscd itself;
95 this is the default if --disable-nscd is used.
97 * Improved support for cross-compilation, including cross-testing and
98 bootstrap builds without a previously built glibc.
100 * Several testsuite tests are now able to test multiple IFUNC variants of an
101 interface, rather than just testing the one that would be chooen by
104 * New configure options --with-bugurl and --with-pkgversion, for
105 distributors to use to embed their bug-reporting and package version
106 information in --help and --version output.
108 * The ttyname and ttyname_r functions on Linux now fall back to searching for
109 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
110 allows creation of chroots without the procfs mounted on /proc.
112 * The `crypt' function now fails if passed salt bytes that violate the
113 specification for those values. On Linux, the `crypt' function will
114 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
115 enabled, and fail on encrypted strings using the MD5 or DES algorithm
116 when the mode is enabled.
118 * The `clock_*' suite of functions (declared in <time.h>) is now available
119 directly in the main C library. Previously it was necessary to link with
120 -lrt to use these functions. This change has the effect that a
121 single-threaded program that uses a function such as `clock_gettime' (and
122 is not linked with -lrt) will no longer implicitly load the pthreads
123 library at runtime and so will not suffer the overheads associated with
124 multi-thread support in other code such as the C++ runtime library.
126 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
131 * The following bugs are resolved with this release:
133 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
134 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
135 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
136 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
137 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
138 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
139 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
140 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
141 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
142 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
143 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
144 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
145 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
146 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
147 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
148 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
149 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
150 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
151 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
152 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
153 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
154 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
157 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
158 configuring glibc with:
159 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
160 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
161 Implemented by H.J. Lu.
165 + define static_assert
167 + do not declare gets
169 + declare at_quick_exit and quick_exit also for ISO C11
171 + aligned_alloc. NB: The code is deliberately allows the size parameter
172 to not be a multiple of the alignment. This is a moronic requirement
173 in the standard but it is only a requirement on the caller, not the
178 + uchar.h support added
180 + CMPLX, CMPLXF, CMPLXL added
182 Implemented by Ulrich Drepper.
184 * Support for the IA-64 has been moved to ports.
186 * Remove support for anything but ELF binary format
188 * Checking versions of poll, ppoll added.
189 Implemented by Ulrich Drepper.
191 * More generic and 64-bit performance optimizations to math functions.
192 Implemented by Ulrich Drepper.
194 * New configure option --enable-obsolete-rpc makes the deprecated RPC
195 headers and functions available at compile time as they were before
196 version 2.14. This option will be removed at some time in the future
197 after the TI-RPC library becomes fully sufficient for the needs of
198 existing applications.
200 * Compatibility code for Linux kernel versions before 2.4 has been removed.
201 Note that glibc is not expected to work with any Linux kernel version
204 * New header <sys/auxv.h> and function getauxval allowing easy access to
205 the AT_* key-value pairs passed from the Linux kernel. The header also
206 defines the HWCAP_* bits associated with the AT_HWCAP key.
208 * New locales: mag_IN
210 * New configure option --enable-systemtap builds SystemTap static probes
211 into libc for setjmp and longjmp and into libpthread for various operations.
212 So far the setjmp/longjmp probes and some of the libpthread probes are
213 provided only for i*86 and x86_64.
214 Implemented by Roland McGrath and Rayson Ho.
216 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
218 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
221 * More optimized functions for SPARC. Implemented by David S. Miller.
223 * Improved support for cross-compilation, especially bootstrap builds
224 without a previously built glibc.
226 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
227 Chris Metcalf from Tilera.
229 * Support for the old ARM ABI has been removed from ports. Only the EABI is
230 now supported for ARM processors.
232 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
233 as the name of the dynamic linker, to distinguish it from the
234 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
236 * Support for CRIS has been removed from ports.
238 * A new class of installed header has been documented for low-level
239 platform-specific functionality. PowerPC added the first instance with a
240 function to provide time base register access. Contributed by Tulio
241 Magno Quites Machado Filho.
243 * ix86 configurations now install header files that are consistent with
244 what x86-64 configurations install. These same header files can be used
245 for -m32, -m64, or -mx32 builds.
246 Contributed by H.J. Lu.
248 * Math library bug fixes. A thorough audit of all open math library bugs was
249 conducted by Joseph Myers. Significant progress was made on many math
250 library bugs resulting in more accurate exceptions and function results.
251 Many thanks to all those that contributed including Andreas Jaeger for his
252 patch review and work on the x87 trigonometric instruction issues.
254 * Timezone data is no longer installed. Timezone-related binaries and scripts
255 will continue to be installed. Users should obtain their timezone data from
256 their distribution provider or from the tzdata package at
257 <ftp://munnari.oz.au/pub/>.
261 * The following bugs are resolved with this release:
263 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
264 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
265 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
266 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
267 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
268 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
269 13484, 13506, 13515, 13523, 13524, 13538, 13540
271 * New program pldd to list loaded object of a process
272 Implemented by Ulrich Drepper.
274 * Add nss_db support back to glibc. No more dependency on Berkeley db
275 and support for initgroups lookups.
276 Implemented by Ulrich Drepper.
278 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
279 Contributed by HJ Lu.
281 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
282 Contributed by HJ Lu.
284 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
285 on x86-32 and x86-64.
286 Contributed by Liubov Dmitrieva.
288 * Optimized strchr and strrchr for SSE on x86-32.
289 Contributed by Liubov Dmitrieva.
291 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
292 for x86-64 and x86-32.
293 Contributed by Liubov Dmitrieva.
295 * New interfaces: scandirat, scandirat64
296 Implemented by Ulrich Drepper.
298 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
299 Implemented by Ulrich Drepper.
301 * nscd now also caches the netgroup database.
302 Implemented by Ulrich Drepper.
304 * Integrate libm with gcc's -ffinite-math-only option.
305 Implemented by Ulrich Drepper.
307 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
308 to math functions. Implemented by Ulrich Drepper.
310 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
311 Implemented by Ulrich Drepper.
313 * New Linux interfaces: process_vm_readv, process_vm_writev
315 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
316 Implemented by Ulrich Drepper.
318 * Optimized nearbyint and strcasecmp for PPC.
319 Implemented by Adhemerval Zanella.
321 * New locales: bho_IN, unm_US, es_CU, ta_LK
325 * The following bugs are resolved with this release:
327 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
328 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
329 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
330 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
331 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
332 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
333 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
334 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
335 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
336 12795, 12811, 12813, 12814, 12841
338 * The RPC implementation in libc is obsoleted. Old programs keep working
339 but new programs cannot be linked with the routines in libc anymore.
340 Programs in need of RPC functionality must be linked against TI-RPC.
341 The TI-RPC implementation is IPv6 enabled and there are other benefits.
343 Visible changes of this change include (obviously) the inability to link
344 programs using RPC functions without referencing the TI-RPC library and the
345 removal of the RPC headers from the glibc headers.
346 Implemented by Ulrich Drepper.
348 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
349 syncfs, setns, sendmmsg
351 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
352 yue_HK, lij_IT, mhr_RU
354 * New encodings: CP770, CP771, CP772, CP773, CP774
356 * New program sotruss to trace calls through PLTs
357 Implemented by Ulrich Drepper.
359 * The malloc hook implementation is marked deprecated and will be removed
360 from the default implementation in the next version. The design never
361 worked ever since the introduction of threads. Even programs which do
362 not create threads themselves can use multiple threads created internally.
366 * The following bugs are resolved with this release:
368 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
369 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
370 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
371 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
374 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
376 * POWER7 optimizations: memset, memcmp, strncmp
378 * New optimized string functions for x86-64: strnlen (SSE2),
379 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
380 Implemented by Ulrich Drepper.
384 * The following bugs are resolved with this release:
386 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
387 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
388 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
389 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
390 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
391 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
392 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
393 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
395 * New interfaces: pthread_getname_np, pthread_setname_np
397 * New Linux interface: recvmmsg
399 * STT_GNU_IFUNC implemented for Sparc by David Miller.
401 * The dynamic linker now recognizes supported ABI versions from the
402 EI_ABIVERSION field in the ELF header.
403 Implemented by Ulrich Drepper.
405 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
406 will not be used to fill in password fields in the passwd.byname replies.
407 Instead it is used to synthesize the shadow.byname table, should it be
408 missing. This is a useful mode in some installations involving Solaris.
409 Implemented by Ulrich Drepper.
411 * New locales: kok_IN, sq_MK, cv_RU
415 * The following bugs are resolved with this release:
417 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
418 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
419 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
420 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
421 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
422 10789, 10817, 10823, 10840, 10847
424 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
426 Implemented by Ulrich Drepper.
428 * Checking version of longjmp added that fails if an uninitialized stack
429 frame would be created. Implemented by Ulrich Drepper.
431 * STT_GNU_IFUNC is now supported in static executables.
432 Implemented by H.J. Lu.
434 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
436 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
437 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
438 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
439 Contributed by H.J. Lu.
441 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
442 Implemented by Ulrich Drepper.
444 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
446 Contributed by H.J. Lu.
448 * Support for fma instruction in AVX on x86-64.
449 Implemented by H.J. Lu and Ulrich Drepper.
451 * AVX support in x86-64 auditing support in ld.so.
452 Implemented by H.J. Lu.
454 * STB_GNU_UNIQUE support added.
455 Implemented by Ulrich Drepper.
457 * Implement second fallback mode for optimized DNS lookup for even more
458 broken environments. If two requests from the same port are not
459 handled correctly close the socket and open a new one before sending
460 the second request. The 'single-request-reopen' option in /etc/resolv.conf
461 can be used to select this mode right away, instead of rediscovering the
462 necessity is every process again.
463 Implemented by Ulrich Drepper.
465 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
466 Implemented by Adam Tkac.
468 * Optimized iconv conversions for S390x.
469 Implemented by Andreas Krebbel.
471 * Using condvars with PI mutexes is now more efficient due to kernel
472 support for requeueing to PI futexes. NPTL support added for x86-64.
473 Implemented by Ulrich Drepper.
475 * New locales: ps_AF, my_MM
479 * The following bugs are resolved with this release:
481 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
482 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
483 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
484 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
485 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
487 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
488 Implemented by Ulrich Drepper.
490 * New Linux interfaces: accept4, fallocate, fallocate64.
491 Implemented by Ulrich Drepper.
493 * Correct declarations of string function when used in C++ code. This
494 could lead to compile errors for invalid C++ code.
496 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
499 * New POSIX 2008 interface: psiginfo
500 Implemented by Ulrich Drepper.
502 * New ISO C++1x interfaces: quick_exit, at_quick_exit
503 Implemented by Ulrich Drepper.
505 * Support for selecting between multiple function definitions at runtime
506 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
508 * The libcrypt library can now use the hash function implementations in
509 NSS. Implemented by Ulrich Drepper.
511 * The malloc implementation can be compiled to be less memory efficient
512 but higher performing in multi-threaded programs.
513 Implemented by Ulrich Drepper.
515 * New locales: nan_TW@latin, ks_IN
517 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
518 Implemented by Ulrich Drepper.
520 * Extended printf hook support. It is possible to use user-defined types
521 and extend existing format specifiers.
522 Implemented by Ulrich Drepper.
524 * Handling for group shadow files has been added.
525 Implemented by Ulrich Drepper.
527 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
528 servers (the case, e.g., for some people using the built-in DNS
529 server in ADSL modems/routers). There is a once-per-process timeout
530 in case of a broken server. To avoid it, users can run nscd or put
531 'options single-request' in /etc/resolv.conf.
532 Implemented by Ulrich Drepper.
536 * The following bugs are resolved with this release:
538 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
539 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
540 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
541 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
542 6968, 6974, 6980, 6995, 7008, 7009, 7029
544 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
545 up at the same time. Implemented by Ulrich Drepper.
547 * TLS descriptors for LD and GD on x86 and x86-64.
548 Implemented by Alexandre Oliva.
550 * getaddrinfo now handles DCCP and UDPlite.
551 Implemented by Ulrich Drepper.
553 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
554 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
555 Implemented by Ulrich Drepper.
557 * New implementation of memmem, strstr, and strcasestr which is O(n).
558 Implemented by Eric Blake.
560 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
562 * Implement "e" option for popen to open file descriptor with the
563 close-on-exec flag set. Implemented by Ulrich Drepper.
565 * Implement "b" mode for fmemopen. In this mode writes writes don't
566 implicitly add a NUL byte and seeks from the end of the buffer really
567 use the buffer end, not the string length as the basis.
568 Implemented by Ulrich Drepper.
570 * Many functions, exported and internal, now atomically set the close-on-exec
571 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
573 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
575 Implemented by Pravin Satpute.
577 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
581 * The following bugs are resolved with this release:
583 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
584 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
585 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
586 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
587 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
588 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
589 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
591 * New locales: bo_CN, bo_IN, shs_CA.
593 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
595 * Sorting rules for some Indian languages (Devanagari and Gujarati).
596 Implemented by Pravin Satpute.
598 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
600 * nscd caches now all timeouts for DNS entries
601 Implemented by Ulrich Drepper.
603 * nscd is more efficient and wakes up less often.
604 Implemented by Ulrich Drepper.
606 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
607 vdprintf, and obstack_vprintf.
608 Implemented by Jakub Jelinek.
610 * Faster memset for x86-64.
611 Implemented by Harsha Jagasia and H.J. Lu.
613 * Faster memcpy on x86.
614 Implemented by Ulrich Drepper.
616 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
617 Implemented by Ulrich Drepper.
619 * Faster sqrt and sqrtf implemention for some PPC variants.
620 Implemented by Steven Munroe.
624 * The following bugs are resolved with this release:
626 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
627 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
628 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
629 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
630 5071, 5103, 5104, 5112, 5113, 5184, 5186
632 * More checking functions: fread, fread_unlocked, open*, mq_open.
633 Implemented by Jakub Jelinek and Ulrich Drepper.
635 * Extend fortification to C++. Implemented by Jakub Jelinek.
637 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
638 by not recognizing 'a' as a modifier when those specs are requested.
639 Implemented by Jakub Jelinek.
641 * PPC optimizations to math and string functions.
642 Implemented by Steven Munroe.
644 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
645 options to be passed. Implemented by Ulrich Drepper.
647 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
649 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
650 Implemented by Ulrich Drepper.
652 * Handle private futexes in the NPTL implementation.
653 Implemented by Jakub Jelinek and Ulrich Drepper.
655 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
656 Implemented by Roland McGrath and Ulrich Drepper.
658 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
660 * SHA-256 and SHA-512 based password encryption.
661 Implemented by Ulrich Drepper.
663 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
664 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
667 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
668 Implemented by Ulrich Drepper.
672 * The following bugs are resolved with this release:
674 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
675 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
676 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
677 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
678 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
679 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
680 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
683 * New Linux interfaces: epoll_pwait, sched_getcpu.
685 * New generic interfaces: strerror_l.
687 * nscd can now cache the services database. Implemented by Ulrich Drepper.
691 * The following bugs are resolved with this release:
693 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
694 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
695 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
696 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
697 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
698 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
699 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
700 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
701 3225, 3251, 3252, 3253, 3273
703 * For Linux, the sorting of addresses returned by getaddrinfo now also
704 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
705 Implemented by Ulrich Drepper.
707 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
708 Implemented by Ulrich Drepper.
710 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
712 * New iconv module for MIK. Contributed by Alexander Shopov.
714 * For sites with broken group and/or passwd database, the auto-propagate
715 option of nscd can prevent creating ID lookup entries from the results
716 of a name lookup and vice versa. This usually is no problem but some
717 site might have problems with the default behavior.
718 Implemented by Ulrich Drepper.
720 * Iterating over entire database in NIS can be slow. With the
721 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
722 to trade time for memory. The entire database will be read at once.
723 Implemented by Ulrich Drepper.
725 * The interfaces introduced in RFC 3542 have been implemented by
728 * Support for the new ELF hash table format was added by Ulrich Drepper.
730 * Support for priority inheritance mutexes added by Jakub Jelinek and
733 * Support for priority protected mutexes added by Jakub Jelinek.
735 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
736 or_IN, csb_PL, fy_NL, sr_ME.
740 * More overflow detection functions.
742 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
743 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
745 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
746 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
747 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
748 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
749 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
750 by Masahide Washizawa.
752 * It is now possible to install audit libraries for the dynamic linker using
753 LD_AUDIT. Implemented by Ulrich Drepper.
755 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
756 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
757 For a libc and libpthread that works well on Linux 2.4 kernels, we
758 recommend using the stable 2.3 branch.
760 * The new function open_wmemstream acts like open_memstream,
761 but uses a wchar_t wide character buffer.
763 * The new function ppoll is an improved version of poll, similar to pselect.
765 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
766 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
767 renameat, unlinkat, linkat, symlinkat, readlinkat.
769 * New Linux kernel system calls: unshare,
770 inotify_init, inotify_add_watch, inotify_rm_watch.
772 * The euidaccess function is now also known by the alias eaccess,
773 for compatibility with some other systems.
775 * Timezone data updated to 2006b version.
779 * The following bugs are resolved with this release:
781 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
782 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
783 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
784 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
785 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
786 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
788 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
790 * As of this release, GCC 4 can be used to compile the C Library.
792 * Timezone data updated to 2005m version.
796 * The following bugs are resolved with this release:
798 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
799 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
800 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
801 777, 787, 821, 822, 823, 825
803 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
807 * Support for RFC 3678. Real implementations exist only for Linux so far.
808 Implemented by Ulrich Drepper.
810 * nscd can now cache entries persistently. Expiring entries are reloaded.
811 For speedups the cache can be shared in memory with client processes.
812 Implemented by Ulrich Drepper.
814 * nscd can now perform SELinux checks.
815 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
817 * getaddrinfo queries are now cached. Canonical name lookup is performed
819 Implemented by Ulrich Drepper.
821 * The nothrow function attribute is used when headers are used by gcc when
822 compiling C code. This can avoid significant amounts of exception
825 * The malloc functions perform more error checking and are stricter when
826 it comes to reacting on errors. The default action is to terminate
827 the process after showing an error message. Implemented by Ulrich Drepper.
829 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
830 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
832 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
833 namespaces using the new function dlmopen(). This feature is of course,
834 like most other dynamic loading functionality, not available in statically
835 linked applications. Implemented by Ulrich Drepper.
837 * Low-overhead boundary checking variants of string and some stdio functions
838 were added. These are to be used in conjunction with a gcc patch by
839 Jakub Jelinek which adds calls to these functions if possible.
840 Implemented by Jakub Jelinek and Ulrich Drepper.
842 * Old code for several operating systems and machine architectures that
843 have not been in working condition in a long time have been removed from
844 the main source tree maintained by the GNU C Library's maintainers.
845 These files are now reside in the separate `ports' source module
846 that is usable as an add-on when building the library.
850 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
851 interrogate the dynamic linker, compatible with the Solaris interface.
853 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
854 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
856 * getifaddrs now uses the netlink interface on Linux to get its information.
857 Implemented by Thorsten Kukuk.
859 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
860 Implemented by Ulrich Drepper.
862 * support for non-executable stacks on x86 has been added. Changes mostly
865 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
868 * getaddrinfo now performs destination address selection according to
873 * Thread-safe interfaces for many functions that access locale data
874 were added in version 2.3, but these features were omitted from NEWS.
875 Many functions have variants with an `_l' suffix that take a `locale_t'
876 object as a parameter rather than consulting the current locale.
877 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
878 create and maintain `locale_t' objects. Additionally, the new function
879 `uselocale' sets "the current locale" (as used by functions not so
880 parameterized) set for an individual thread. These features were added
881 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
883 * The functions getresuid, getresgid, setresuid, and setresgid, which
884 have long been available on Linux, are now declared in <unistd.h>
885 and are now also available on the Hurd.
887 * ELF thread-local storage support (TLS) now works on x86-64.
889 * The new dynamic string token $LIB is expanded in shared library names.
890 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
892 * Aldy Hernandez contributed complete software floating point support for
893 PowerPC machines with no FPU.
895 * fexecve is implemented on Linux.
897 * The `btowc' function should work at least twice as fast due to
898 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
900 * With approriate thread add-ons cancelable functions are now implemented
901 in libc.so as well. No need to call the function in libpthread. This
902 change allowed to finally disable the incorrect and expensive handling
903 of weak definition in ld.so.
905 * Yet more PLT entries in libc.so have been removed. We finally arrived
906 at the bare minimum. Startup times improved appropriately.
908 * Support for the new Linux/x86 system call interface was added. The
909 AT_SYSINFO auxiliary vector entry is recognized and handled.
913 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
916 * iconv (the program and the interface) now accepts empty names (excluding
917 options like //TRANSLIT) to mean "use charset of current locale".
919 * localedef can now transliterate characters in strings which are not in
920 the provided charmap. The information from the input locale is used.
922 * Prelinking support was added for ELF targets. This requires additional
923 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
925 * Read-only stdio streams now use mmap to speed up operation by eliminating
926 copying and buffer underflows. To use add 'm' to the mode string of
927 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
929 * The malloc functions were completely rewritten by Wolfram Gloger based
930 on Doug Lea's malloc-2.7.0.c.
932 * Isamu Hasegawa contributed a completely new and POSIX-conformant
933 implementation of regex.
935 * Bruno Haible upgraded the iconv and locale implementation to support
938 * Contents of the LC_* and LANG environment variables in the CEN style are
939 not recognized anymore. It never was used. Change by Ulrich Drepper.
941 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
942 thread-local storage (TLS) ABI on some platforms.
943 Changes by Ulrich Drepper. SH support by Kaz Kojima.
945 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
946 EUC-JISX0213, and TSCII.
948 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
949 BSD-compatible interface for getting all network interface addresses.
950 Implementation for IPv4 by Roland McGrath.
952 * Loading of locale data is faster due to the introduction of a locale
953 archive. Implemented by Roland McGrath and Ulrich Drepper.
955 * Startup times are significantly reduced by not using exported functions
956 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
959 * Steven Munroe contributed a port to PowerPC64/Linux.
963 * The Hurd now uses the GNU libio implementation of stdio rather than the
964 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
966 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
967 with the same behavior as the Linux system call of the same name.
971 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
972 128-bit long double format.
974 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
975 IBM1161, and IBM1162 charsets.
977 * Andreas Jaeger contributed a port to x86-64/Linux.
979 * Peter Bruin contributed a port to PowerPC/Hurd.
981 * libc functions using I/O streams now can handle wide-oriented streams
984 * optimizations in the dynamic linker. Binaries created by recent binutils
985 versions start up quicker due to reduced time spent on relocations.
987 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
991 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
992 asinh, atanh, j0 for the 128-bit long double format.
994 * Bruno Haible updated all the code handling Unicode in some form to
997 * Speed of regex for single-byte locales is back to previous levels.
998 Patch by Isamu Hasegawa.
1000 * Alpha, SPARC, and IA-64 now also using floating stacks.
1002 * Startup time of internationalized applications greatly improved through
1003 iconv cache. Use iconvconfig to generate the cache file.
1004 Contributed by Ulrich Drepper.
1006 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1007 severe performance problems. Patch by David Mosberger.
1009 * The Hurd port got a lot more functionality like AIO, various stdio
1010 extensions, etc. Mainly done by Roland McGrath.
1012 * mtrace can now lookup symbols in shared libraries.
1016 * Intel's IA-64 math library is largely integrated. It provides fast and
1017 accurate implementatations for most basic and standard math functions
1018 in float, double, and long double format.
1020 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1021 and asin for the 96-bit long double format and asin, log, tan for the
1022 128-bit long double format.
1024 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1025 The basic double functions exist today. Contributed by Abraham Ziv
1026 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1027 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1029 * An asynchronous name lookup library was added. The interface is designed
1030 after POSIX AIO. The proposal was circulated beforehand to get comments.
1031 No negative ones came in. Implemented by Ulrich Drepper.
1033 * Port to S390/64bit contributed by Martin Schwidefsky
1034 <schwidefsky@de.ibm.com>.
1036 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1037 of functions for Linux/IA-64.
1039 * The RPC code is now thread safe. Threads can now use the same service
1040 of different services at the same time. Patch by Eric Norum
1041 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1043 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1044 family of functions for Linux/S390.
1046 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1047 of functions for Linux/x86.
1049 * Port to Linux/CRIS contributed by Axis Communications.
1053 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1054 we can now check for namespace violations and missing declarations. The
1055 result is that almost all headers are now Unix-compliant (as defined in
1056 the upcoming XPG6). The negative side is that some programs might need
1057 corrections, too, if they depend on the incorrect form of the headers in
1058 previous versions which defined too many symbols and included too many
1061 * regex now handles multibyte character sets correctly.
1062 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1064 * iconv (the program) does now conform to the upcoming XPG6 and handles
1065 charmaps. Instead of the charset names the path of charmaps can be
1066 provided and the conversion happens based on this data.
1067 Contributed by Ulrich Drepper.
1069 * The locale program now provides detailed information about the installed
1074 only lists the names of the supported locales
1078 provides details such as country, language, and codeset name.
1079 Contributed by Ulrich Drepper.
1083 * The gencat program now parses the input file according to the charset
1084 selected by the LC_CTYPE category. This is important for stateful
1085 character sets. To make generating catalogs easier there is a way
1086 to overwrite the charset selected by the locale: before the first
1087 message or $ quote line the catalog can contain a line like
1089 $ codeset=ISO-8859-2
1091 to select the charset (ISO-8859-2 in this case).
1093 Implemented by Shinya Hanataka and Ulrich Drepper.
1095 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1096 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1097 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1099 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1100 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1102 * The LANGUAGE environment variable is now ignored unless the locale is
1103 changed from the default "C" locale.
1105 * The usual bug fixes.
1109 * Greg McGary added runtime support for bounds checking using gcc's
1110 new -fbounded-pointers option. ix86 target is complete. PowerPC
1113 * Thorsten Kukuk added secure mode support to nscd.
1115 * The Berkeley db libraries have been removed.
1117 Related, the nss_db module is now in a separate package since it
1118 obviously requires a database library being available.
1120 * Wide character I/O streams implemented by Ulrich Drepper.
1122 * Functions from the extended socket API added by Ulrich Drepper.
1124 * Functions feenableexcept and fedisableexcept to control the
1125 behaviour of individual exceptions have been added by Andreas Jaeger.
1127 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1129 * The resolver code has been updated from bind 8.2.3-T5B which supports
1130 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1133 This change could in some situations effect backward compatibility. Since
1134 now `_res' is a thread-local instead of a global variable, modifying it
1135 in one thread does not have any effect in other threads.
1137 The resolver library was also extended to allow IPv6 as the transport
1138 protocol for the requests. This work was done by Stig Venaas.
1140 * Compatibility code for K&R C compilers has been removed from the
1141 header files. A ISO C compiler is needed to use the library
1142 (conforming to either C89 or C99 standard).
1144 * Complete rewrite of the localedef program to support multibyte character
1145 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1146 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1147 Implemented by Ulrich Drepper.
1149 Bruno Haible significantly improved the generation and use of the data
1150 structures for the wide character tables.
1152 * Plural handling in gettext implemented by Ulrich Drepper.
1154 * The utmp daemon has been removed.
1156 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1158 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1161 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1163 * POSIX barriers implemented by Kaz Kylheku.
1165 * POSIX spawn function family implemented by Ulrich Drepper.
1167 * POSIX spinlocks are now available.
1169 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1171 * the configure option --enable-kernel=X.Y.Z allows to strip out
1172 compatibility for kernel versions before X.Y.Z. This is currently only
1173 implemented for Linux.
1175 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1176 field sin6_scope_id. This means that all programs using IPv6 should be
1177 recompiled. Don't expect binary compatibility with previous glibc
1180 * various conversion modules for IBM character sets contributed by
1183 * IA-64 port by Jes Sorensen and HJ Lu.
1197 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1199 * New xdr functions are added; some rpc functions are now 64bit clean.
1201 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1203 * Fixed known incompatibilities with glibc 2.0.
1205 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1207 * Optimized a number of functions (especially the ELF dynamic loader).
1209 * Update timezone data files.
1211 * lots of charmaps corrections
1213 * some new locale definitions and charmaps
1218 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1219 conform to POSIX member type requirements. Symbol versions have been
1220 adjusted as needed within the library, and for direct use by applications,
1221 but there is potential for problems if third-party libraries use
1222 struct timeval as part of their interface. This does not present
1223 a problem for X and other "essential" system libraries.
1225 * An additional locale model to support C++ Standard Library locale
1226 model and probably more was implemented by Ulrich Drepper.
1228 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1231 * Miles Bader provided the `argp' function family to support hierachical
1232 command line argument parsing, layered on top of getopt.
1234 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1236 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1239 * scanf recognizes the %a and %A format for scanning floating point numbers.
1241 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1242 information and interfaces for the available integer types.
1244 * about 130 new math functions were added to implement the ISO C9x math
1247 * the new header <complex.h> contains definitions of the complex math
1248 functions from ISO C 9X.
1250 * the new header <tgmath.h> defines generic macros to use complex or
1251 real valued functions.
1253 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1255 * Andreas Jaeger provided a test suite for the math library.
1257 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1259 * Ulrich Drepper added character set conversion functions (iconv).
1261 * Optimized string functions have been added.
1263 * The localedata addon is now part of glibc.
1265 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1267 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1268 daemon for NSS (nscd).
1270 Missing a better place here are some numbers on improvements. Under
1271 Linux 2.1.125 un-tar-ing the kernel sources takes
1275 using local files 12.19s 6.88s 22.91s
1277 using NIS 13.92s 8.91s 26.34s
1279 using NIS & nscd 10.37s 7.34s 25.30s
1281 using NIS+ 27.57s 30.37s 640.46s
1283 using NIS+ & nscd 10.25s 7.83s 26.51s
1285 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1287 Keep in mind that non-namelookup related operations dominate above times.
1288 It was just a common complain that using NIS+ unpacking the kernel is
1291 [1] The old nscd implementation is not available anymore since it was
1292 distributed with glibc up to version 2.0.98 and thus is now replaced.
1294 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1296 * Mark Kettenis provided a Hesiod NSS module.
1298 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1299 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1301 * rcmd can now handle netgroups (Dick Streefland).
1303 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1306 * Support for the IPv6 protocol has been added to the socket API, as per the
1307 latest draft standards.
1309 * Support for Linux 2.2 has been added.
1311 * Interface changes relative to the latest 2.0.x release:
1312 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1313 addseverity NEW: Unix98
1314 alphasort64 NEW: LFS
1315 argp_err_exit_status NEW: argp, GNU ext
1316 argp_error NEW: argp, GNU ext
1317 argp_failure NEW: argp, GNU ext
1318 argp_help NEW: argp, GNU ext
1319 argp_parse NEW: argp, GNU ext
1320 argp_program_bug_address NEW: argp, GNU ext
1321 argp_program_version NEW: argp, GNU ext
1322 argp_program_version_hook NEW: argp, GNU ext
1323 argp_state_help NEW: argp, GNU ext
1324 argp_usage NEW: argp, GNU ext
1325 authdes_create NEW: Secure RPC
1326 authdes_getucred NEW: Secure RPC
1327 authdes_pk_create NEW: Secure RPC
1328 backtrace NEW: GNU ext.
1329 backtrace_symbols NEW: GNU ext.
1330 backtrace_symbols_fd NEW: GNU ext.
1332 cacosf NEW: ISO C 9x
1333 cacosh NEW: ISO C 9x
1334 cacoshf NEW: ISO C 9x
1335 cacoshl NEW: ISO C 9x
1336 cacosl NEW: ISO C 9x
1343 casinf NEW: ISO C 9x
1344 casinh NEW: ISO C 9x
1345 casinhf NEW: ISO C 9x
1346 casinhl NEW: ISO C 9x
1347 casinl NEW: ISO C 9x
1349 catanf NEW: ISO C 9x
1350 catanh NEW: ISO C 9x
1351 catanhf NEW: ISO C 9x
1352 catanhl NEW: ISO C 9x
1353 catanl NEW: ISO C 9x
1354 cbc_crypt NEW: Secure RPC
1358 ccoshf NEW: ISO C 9x
1359 ccoshl NEW: ISO C 9x
1365 cimagf NEW: ISO C 9x
1366 cimagl NEW: ISO C 9x
1367 clearerr_locked REMOVED
1368 clntunix_create NEW: sunrpc ext
1370 clog10 NEW: ISO C 9x
1371 clog10f NEW: ISO C 9x
1372 clog10l NEW: ISO C 9x
1382 cprojf NEW: ISO C 9x
1383 cprojl NEW: ISO C 9x
1385 crealf NEW: ISO C 9x
1386 creall NEW: ISO C 9x
1391 csinhf NEW: ISO C 9x
1392 csinhl NEW: ISO C 9x
1395 csqrtf NEW: ISO C 9x
1396 csqrtl NEW: ISO C 9x
1400 ctanhf NEW: ISO C 9x
1401 ctanhl NEW: ISO C 9x
1403 des_setparity NEW: Secure RPC
1404 ecb_crypt NEW: Secure RPC
1405 endutxent NEW: Unix98
1407 exp10f NEW: ISO C 9x
1408 exp10l NEW: ISO C 9x
1412 fattach NEW: STREAMS
1413 fdetach NEW: STREAMS
1417 feclearexcept NEW: ISO C 9x
1418 fegetenv NEW: ISO C 9x
1419 fegetexceptflag NEW: ISO C 9x
1420 fegetround NEW: ISO C 9x
1421 feholdexcept NEW: ISO C 9x
1423 feraiseexcept NEW: ISO C 9x
1424 ferror_locked REMOVED
1425 fesetenv NEW: ISO C 9x
1426 fesetexceptflag NEW: ISO C 9x
1427 fesetround NEW: ISO C 9x
1428 fetestexcept NEW: ISO C 9x
1429 feupdateenv NEW: ISO C 9x
1430 fflush_locked REMOVED
1434 fgets_unlocked NEW: GNU ext.
1435 fileno_locked REMOVED
1447 fputc_locked REMOVED
1448 fputs_unlocked NEW: GNU ext.
1449 fread_unlocked NEW: GNU ext.
1454 fstatvfs NEW: Unix98
1458 ftruncate64 NEW: LFS
1460 fwrite_unlocked NEW: GNU ext.
1461 gai_strerror NEW: IPv6
1465 getchar_locked REMOVED
1467 getdate_err NEW: Unix98
1468 getdate_r NEW: GNU ext.
1470 getnameinfo NEW: IPv6
1471 getnetname NEW: Secure RPC
1472 getpmsg NEW: STREAMS
1473 getpt NEW: Unix98 PTY
1474 getrlimit64 NEW: LFS
1475 getutxent NEW: Unix98
1476 getutxid NEW: Unix98
1477 getutxline NEW: Unix98
1478 glob64 NEW: GNU ext.
1479 globfree64 NEW: GNU ext.
1480 gnu_get_libc_release NEW: GNU ext.
1481 gnu_get_libc_version NEW: GNU ext.
1482 grantpt NEW: Unix98 PTY
1483 host2netname NEW: Secure RPC
1485 iconv_close NEW: iconv
1486 iconv_open NEW: iconv
1487 if_freenameindex NEW: IPv6
1488 if_indextoname NEW: IPv6
1489 if_nameindex NEW: IPv6
1490 if_nametoindex NEW: IPv6
1491 in6addr_any NEW: IPv6
1492 in6addr_loopback NEW: IPv6
1493 inet6_isipv4mapped NEW: IPv6
1494 isastream NEW: STREAMS
1495 iswblank NEW: GNU ext.
1496 key_decryptsession NEW: Secure RPC
1497 key_decryptsession_pk NEW: Secure RPC
1498 key_encryptsession NEW: Secure RPC
1499 key_encryptsession_pk NEW: Secure RPC
1500 key_gendes NEW: Secure RPC
1501 key_get_conv NEW: Secure RPC
1502 key_secretkey_is_set NEW: Secure RPC
1503 key_setnet NEW: Secure RPC
1504 key_setsecret NEW: Secure RPC
1505 llrint NEW: ISO C 9x
1506 llrintf NEW: ISO C 9x
1507 llrintl NEW: ISO C 9x
1508 llround NEW: ISO C 9x
1509 llroundf NEW: ISO C 9x
1510 llroundl NEW: ISO C 9x
1515 lrintf NEW: ISO C 9x
1516 lrintl NEW: ISO C 9x
1517 lround NEW: ISO C 9x
1518 lroundf NEW: ISO C 9x
1519 lroundl NEW: ISO C 9x
1521 makecontext NEW: Unix98
1522 mempcpy NEW: GNU ext.
1525 modify_ldt NEW: kernel
1529 nearbyint NEW: ISO C 9x
1530 nearbyintf NEW: ISO C 9x
1531 nearbyintl NEW: ISO C 9x
1532 netname2host NEW: Secure RPC
1533 netname2user NEW: Secure RPC
1534 nexttoward NEW: ISO C 9x
1535 nexttowardf NEW: ISO C 9x
1536 nexttowardl NEW: ISO C 9x
1540 passwd2des NEW: Secure RPC
1542 pow10f NEW: GNU ext.
1543 pow10l NEW: GNU ext.
1546 printf_size NEW: GNU ext.
1547 printf_size_info NEW: GNU ext.
1548 profil_counter REMOVED
1549 pthread_mutexattr_getkind_np REPLACED
1550 pthread_mutexattr_setkind_np REPLACED
1551 ptsname NEW: Unix98 PTY
1552 ptsname_r NEW: Unix98 PTY
1554 putchar_locked REMOVED
1555 putgrent NEW: GNU ext.
1557 putpmsg NEW: STREAMS
1558 pututxline NEW: Unix98
1562 readdir64_r NEW: LFS
1563 remquo NEW: ISO C 9x
1564 remquof NEW: ISO C 9x
1565 remquol NEW: ISO C 9x
1567 roundf NEW: ISO C 9x
1568 roundl NEW: ISO C 9x
1570 scalbln NEW: ISO C 9x
1571 scalblnf NEW: ISO C 9x
1572 scalblnl NEW: ISO C 9x
1574 sendfile NEW: kernel
1575 setcontext NEW: Unix98
1576 setrlimit64 NEW: LFS
1577 setutxent NEW: Unix98
1579 sigignore NEW: Unix98
1580 sigqueue NEW: POSIX.1b
1581 sigrelse NEW: Unix98
1582 sigset NEW: POSIX.1b
1583 sigtimedwait NEW: POSIX.1b
1584 sigwaitinfo NEW: POSIX.1b
1585 sincos NEW: GNU ext.
1586 sincosf NEW: GNU ext.
1587 sincosl NEW: GNU ext.
1591 strcasestr NEW: GNU ext.
1592 strtoimax NEW: ISO C 9x
1593 strtoumax NEW: ISO C 9x
1594 strverscmp NEW: GNU ext.
1595 svcauthdes_stats NEW: Secure RPC
1596 svcunix_create NEW: sunrpc etx
1597 svcunixfd_create NEW: sunrpc ext
1598 swapcontext NEW: Unix98
1599 tcgetsid NEW: Unix98 PTY
1600 tdestroy NEW: GNU ext.
1601 tgamma NEW: ISO C 9x
1602 tgammaf NEW: ISO C 9x
1603 tgammal NEW: ISO C 9x
1607 truncf NEW: ISO C 9x
1608 truncl NEW: ISO C 9x
1610 unlockpt NEW: Unix98 PTY
1611 updwtmpx NEW: Unix98
1612 user2netname NEW: Secure RPC
1613 utmpxname NEW: Unix98
1614 versionsort NEW: GNU ext.
1615 versionsort64 NEW: GNU ext.
1617 wcscasecmp NEW: GNU ext.
1618 wcsncasecmp NEW: GNU ext.
1619 wcsnlen NEW: GNU ext.
1620 wcstoimax NEW: ISO C 9x
1621 wcstoll NEW: ISO C 9x
1622 wcstoull NEW: ISO C 9x
1623 wcstoumax NEW: ISO C 9x
1625 wordexp NEW: POSIX.2
1626 wordfree NEW: POSIX.2
1627 write_profiling REMOVED
1628 xdecrypt NEW: Secure RPC
1629 xdr_authdes_cred NEW: Secure RPC
1630 xdr_authdes_verf NEW: Secure RPC
1631 xdr_cryptkeyarg NEW: Secure RPC
1632 xdr_cryptkeyarg2 NEW: Secure RPC
1633 xdr_cryptkeyres NEW: Secure RPC
1634 xdr_getcredres NEW: Secure RPC
1635 xdr_key_netstarg NEW: Secure RPC
1636 xdr_key_netstres NEW: Secure RPC
1637 xdr_keybuf NEW: Secure RPC
1638 xdr_keystatus NEW: Secure RPC
1639 xdr_netnamestr NEW: Secure RPC
1640 xdr_sizeof NEW: Secure RPC
1641 xdr_unixcred NEW: sunrpc ext
1642 xencrypt NEW: Secure RPC
1643 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1654 * inet_ntoa is thread-safe
1656 * updwtmp is moved from libutil to libc
1658 * rewrite of cbrt function
1660 * update of timezone data
1674 * add atoll function
1676 * fix complex problems in Berkeley DB code
1678 * fix math functions
1682 * fixed lots of header problems (especially Linux/GNU specific)
1684 * dynamic loader preserves all registers
1686 * Roland McGrath provided support for handling of auxiliary objects in
1687 the ELF dynamic loader.
1689 * support for parallel builds is improved
1693 * GNU extensions are no longer declared by default. To enable them you
1694 must define the macro `_GNU_SOURCE' in your program or compile with
1697 * The library has changed from using GNU ld symbol aliases to using weak
1698 symbols where available. The ELF object file format supports weak
1699 symbols; GNU ld also supports weak symbols in the a.out format. (There
1700 is also now support for other GNU ld extensions in ELF. Use the
1701 `--with-elf' option to configure to indicate you have ELF, and
1702 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1703 of many files which contained only symbol aliases, reducing the size of
1704 the source and the compiled library; many other files were renamed to
1705 less cryptic names previously occupied by the symbol alias files.
1706 There is a new header file <elf.h> for programs which operate on
1707 files in the ELF format.
1709 * Converted to Autoconf version 2, so `configure' has more options.
1710 Run `configure --help' to see the details.
1712 * The library can now be configured to build profiling, highly-optimized
1713 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1714 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1715 `configure' enable building these extra libraries. The shared library is
1716 built by default when using both ELF and GNU ld. When shared libraries
1717 are enabled, the new library `-ldl' is available for arbitrary run-time
1718 loading of shared objects; its interface is defined in <dlfcn.h>. The
1719 new header file <link.h> gives access to the internals of the run-time
1720 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1721 application of same name on other systems and it provides information
1722 about dynamically linked binaries.
1724 * The C library now provides the run-time support code for profiling
1725 executables compiled with `-pg'. Programs can control the profiling code
1726 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1727 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1728 the support for this file format was contributed by David Mosberger-Tang.
1730 * The math code has been replaced with a math library based on fdlibm from
1731 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1732 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1733 functions. The math functions now reside in a separate library, so
1734 programs using them will need to use `-lm' their linking commands.
1736 * John C. Bowman contributed optimized ix87 assembler inline functions.
1738 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1739 mechanism similar to that found in Solaris 2. This is now used for the
1740 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1741 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1742 file controls what services are used for each individual database. This
1743 works by loading shared libraries with names specified in `nsswitch.conf',
1744 so service modules can be changed or added at any time without even
1745 relinking any program. Currently there are the file, db, and NIS based
1746 NSS services available.
1748 * The new functions `strtoq' and `strtouq' parse integer values from
1749 strings, like `strtol' and `strtoul', but they return `long long int' and
1750 `unsigned long long int' values, respectively (64-bit quantities).
1752 * The new functions `strtof' and `strtold' parse floating-point values from
1753 strings, like `strtod', but they return `float' and `long double' values,
1754 respectively (on some machines `double' and `long double' are the same).
1756 * Ulrich Drepper has contributed new implementations of the floating-point
1757 printing and reading code used in the `printf' family of functions and
1758 `strtod', `strtof', and `strtold'. These new functions are perfectly
1759 accurate, and much faster than the old ones.
1761 * The implementation of the POSIX locale model was completely rewritten by
1762 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1763 to compile the POSIX locale definition.
1765 * The former dummy implementations of the strcoll and strxfrm function are
1766 now replaced by fully functional code contributed by Ulrich Drepper. The
1767 collation information comes from the POSIX locale definitions.
1769 * The new header <langinfo.h> defines an interface for accessing
1770 various locale-dependent data (using the locale chosen with `setlocale').
1772 * Ulrich Drepper has contributed a new suite of functions for operation on
1773 wide-character and multibyte-character strings, in <wchar.h>;
1774 and classification and case conversion of wide characters, in <wctype.h>.
1775 These new functions are conforming to the ISO C, Amendement 1 specification.
1777 * There is now a second implementation of the standard I/O library available.
1778 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1779 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1781 * You can now use positional parameter specifications in format strings
1782 for the `printf' and `scanf' families of functions. For example,
1783 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1784 ``Number 6, Mr Jones''. This is mainly useful when providing different
1785 format strings for different languages, whose grammars may dictate
1786 different orderings of the values being printed. To support this
1787 feature, the interface for `register_printf_handler' has changed; see
1788 the header file <printf.h> for details.
1790 * The `printf' and `scanf' families of functions now understand a new
1791 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1792 to group numbers as indicated by the locale; for `scanf' and friends, this
1793 says to accept as valid only a number with all the proper grouping
1794 separators in the right places. In the default "C" locale, numbers are
1795 not grouped; but locales for specific countries will define the usual
1796 conventions (i.e. separate thousands with `,' in the US locale).
1798 * The pgrp functions have been regularized, slightly incompatibly but much
1799 less confusingly. The core functions are now `getpgid' and `setpgid',
1800 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1801 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1802 provided for compatibility. There is no longer an incompatible `getpgrp'
1803 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1805 * The new header file <fts.h> and suite of functions simplify programs that
1806 operate on directory trees. This code comes from 4.4 BSD.
1808 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1809 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1810 NSS scheme used in glibc.
1812 * There is a new malloc debugging hook `__memalign_hook'.
1814 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1815 `unsigned int' in <sys/types.h>. These are for compatibility only and
1816 their use is discouraged.
1818 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1819 done differently, so that it works even without GNU ld.
1821 * New function `euidaccess' checks allowed access to a file like `access',
1822 but using the effective IDs instead of the real IDs.
1824 * The time zone data files have been updated for the latest and greatest
1825 local time conventions of the countries of the world.
1827 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1830 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1831 for formatting floating-point numbers. They are provided only for
1832 compatibility; new programs should use `sprintf' instead. There are
1833 also equivalent function for the `long double' floating-point type and
1834 all functions also exist in a reentrant form.
1836 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1837 functions for maintaining the login-record files (primarily of use to
1838 system programs such as `login'), and convenient functions for
1839 allocating and initializing a pseudo-terminal (pty) device.
1841 * Ulrich Drepper has contributed new support for System V style
1842 shared memory and IPC on systems that support it.
1844 * Ulrich Drepper has contributed several miscellaneous new functions found
1845 in System V: The `hsearch' family of functions provide an effective
1846 implementation of hash tables; `a64l' and `l64a' provide a very simple
1847 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1850 * Ulrich Drepper has contributed new reentrant counterparts for the
1851 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1853 * Ulrich Drepper has contributed new, highly-optimized versions of several
1854 string functions for the i486/Pentium family of processors.
1856 * Ulrich Drepper has updated the Linux-specific code, based largely
1857 on work done in Hongjiu Lu's version of GNU libc for Linux.
1858 The GNU library now supports Linux versions 2.0.10 and later,
1859 using the ELF object file format (i[3456]86-*-linux).
1861 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1863 * David Mosberger-Tang and Richard Henderson have ported the C library
1864 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1865 dynamic linking support for ELF/Alpha.
1867 * Richard Henderson contributed several Alpha optimized assembler function
1868 for arithmetic and string handling.
1870 * Ulrich Drepper has contributed a new set of message catalog functions to
1871 support multiple languages using the <libintl.h> interface, for use with
1872 his new package GNU gettext. Translation volunteers have contributed
1873 catalogs of the library's messages in Spanish, German, and Korean.
1875 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1876 program and the `catgets' function for reading the catalog files it
1877 creates. (The <libintl.h> interface is preferred; we include the
1878 <nl_types.h> interface using `catgets' only for source compatibility with
1879 programs already written to use it.)
1881 * New header file <values.h> gives SVID-compatible names for <limits.h>
1884 * Various new macros, declarations, and small header files for compatibility
1887 * New function `group_member' is a convenient way to check if a process has
1888 a given effective group ID.
1890 * When using GCC 2.7 and later, the socket functions are now declared in a
1891 special way so that passing an argument of type `struct sockaddr_in *',
1892 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1893 `struct sockaddr *' type, does not generate a type-clash warning.
1895 * New function `error' declared in header file <error.h> is a convenient
1896 function for printing error messages and optionally exiting; this is the
1897 canonical function used in GNU programs. The new functions `err', `warn',
1898 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1899 doing the same thing.
1901 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1902 POSIX.2 `glob' function to do ~ and {...} expansion.
1904 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1905 `clearenv' which is used in POSIX.9 is also available.
1907 * New function `getsid' returns session ID number on systems that support it.
1909 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1910 files <db.h> and <mpool.h> provide a rich set of functions for several
1911 types of simple databases stored in memory and in files, and <ndbm.h> is
1912 an old `ndbm'-compatible interface using the `db' functions. Link with
1913 `-ldb' to get these functions.
1915 * New macro `strdupa' copies a string like `strdup', but uses local stack
1916 space from `alloca' instead of dynamic heap space from `malloc'.
1918 * New function `strnlen' is like `strlen' but searches only a given maximum
1919 number of characters for the null terminator. `stpncpy', `strndup' and
1920 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1923 * New function `statfs' in header <sys/statfs.h>.
1925 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1926 provide convenient functions for operating on blocks of null-terminated
1929 * A new suite of functions in <utmp.h> handle all the details of reading
1930 and writing the utmp file.
1932 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1935 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1936 completely POSIX compliant and also implemented the extended functionality
1937 to handle alternate digit representation and alternate era date formats.
1939 * Ulrich Drepper provided an implementation of the `strptime' function
1940 defined in XPG4.2 which transforms a string into a `struct tm' value.
1942 * Paul Eggert provided the tzselect shell script as part of the timezone
1943 code. The shell script makes it easy to select the correct timezone
1946 * The implementation of the malloc family of functions is completely replaced
1947 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1948 The implementation uses the mmap function (if available) and it is
1949 optimized for the use in multi threaded programs.
1951 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1952 functions. This new functionality is usable by specifying a special
1953 salt string and it is compatible with implementation on *BSD systems.
1955 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1956 `getsubopt' to handle second level command line options, `bsd_signal'
1957 to access BSD style `signal' functionality, the obsolete `regexp' style
1960 * the `lchown' function is available on system which support this
1963 * The implementation of the shadow password handling function was contributed
1966 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1968 * POSIX.1g support was added. The <sys/select.h> header is available,
1969 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1970 implementation of `getaddrinfo'.
1974 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1976 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1977 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1979 * The new function `daemon' from 4.4 BSD is useful for server programs that
1980 want to put themselves in the background.
1982 * Joel Sherrill has contributed support for several standalone boards that
1983 run without an operating system.
1985 * `printf', `scanf' and friends now accept a `q' type modifier for long
1986 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1988 * All of the code taken from BSD (notably most of the math and networking
1989 routines) has been updated from the BSD 4.4-Lite release.
1991 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1993 * The new functions `getdomainname' and `setdomainname' fetch or change the
1994 YP/NIS domain name. These are system calls which exist on systems which
1997 * The time zone data files have been updated for the latest international
2000 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2001 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2005 * The C library now includes support for Sun RPC, from Sun's free
2006 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2007 are included. (There is still no support for YP.)
2009 * Tom Quinn has contributed a port of the C library to SGI machines running
2010 Irix 4 (mips-sgi-irix4).
2012 * The new `lockf' function is a simplified interface to the locking
2013 facilities of `fcntl', included for compatibility.
2015 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2017 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2019 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2022 * The error message printed by `assert' for a failed assertion now includes
2023 the name of the program (if using GNU ld) and the name of the calling
2024 function (with versions of GCC that support this).
2026 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2028 * The library now includes the <sys/mman.h> header file and memory
2029 management functions `mmap', `munmap', `mprotect', `msync', and
2030 `madvise', on systems that support those facilities.
2032 * The interface for `mcheck' has changed slightly: the function called to
2033 abort the program when an allocation inconsistency is detected now takes
2034 an argument that indicates the type of failure. The new function
2035 `mprobe' lets you request a consistency check for a particular block at
2036 any time (checks are normally done only when you call `free' or `realloc'
2039 * It is now possible to easily cross-compile the C library, building on one
2040 system a library to run on another machine and/or operating system. All
2041 you need to do is set the variable `HOST_CC' in `configparms' to the
2042 native compiler for programs to run on the machine you are building on (a
2043 few generator programs are used on Unix systems); set `CC' to the
2046 * The new function `fexecve' (only implemented on the GNU system) executes
2047 a program file given a file descriptor already open on the file.
2051 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2052 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2054 * You can set the variable `libprefix' in `configparms' to specify a prefix
2055 to be prepended to installed library files; this makes it easy to install
2056 the GNU C library to be linked as `-lgnuc' or whatever.
2058 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2059 copies a limited number of characters from a string, and returns the
2060 address of the last character written.
2062 * You no longer need to check for whether the installed `stddef.h' is
2063 compatible with the GNU C library. configure now checks for you.
2065 * You can now define a per-stream `fileno' function to convert the
2066 stream's cookie into an integral file descriptor.
2068 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2069 allocates zero bytes of storage, and returns a unique pointer which
2070 you can pass to `realloc' or `free'. The behavior is undefined if
2071 you dereference this pointer.
2073 * The C library now runs on Sony NEWS m68k machines running either
2074 NewsOS 3 or NewsOS 4.
2076 * The new `syscall' function is a system-dependent primitive function
2077 for invoking system calls. It has the canonical behavior on Unix
2078 systems, including unreliable return values for some calls (such as
2079 `pipe', `fork' and `getppid').
2081 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2082 to `EAGAIN', which is the preferred name. On systems whose kernels
2083 use two distinct codes, the C library now translates EWOULDBLOCK to
2084 EAGAIN in every system call function.
2088 * The GNU C Library Reference Manual is now distributed with the library.
2089 `make dvi' will produce a DVI file of the printed manual.
2090 `make info' will produce Info files that you can read on line using C-h i
2091 in Emacs or the `info' program.
2092 Please send comments on the manual to bug-glibc-manual@gnu.org.
2094 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2096 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2098 * Jason Merrill has contributed a port to the Sequent Symmetry running
2099 Dynix version 3 (i386-sequent-dynix).
2101 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2102 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2104 * New function `memory_warnings' lets you arrange to get warnings when
2105 malloc is running out of memory to allocate, like Emacs gives you.
2107 * The C library now contains the relocating allocator used in Emacs 19 for
2108 its editing buffers. This allocator (ralloc) minimizes allocation
2109 overhead and fragmentation by moving allocated regions around whenever it
2110 needs to. You always refer to a ralloc'd region with a "handle" (a
2111 pointer to a pointer--an object of type `void **').
2113 * There is a new `printf' format: `%m' gives you the string corresponding
2114 to the error code in `errno'.
2116 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2117 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2118 pass, the `a' modifier says to fill in a `char **' you pass with a
2121 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2122 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2123 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2125 * `mkstemp' is a traditional Unix function to atomically create and open a
2126 uniquely-named temporary file.
2130 * The standard location for the file that says what the local timezone is
2131 has changed again. It is now `/usr/local/etc/localtime' (or more
2132 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2134 * The distribution no longer contains any files with names longer than 14
2137 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2138 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2140 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2144 * The configuration process has changed quite a bit. The `configure'
2145 script is now used just like the configuration scripts for other GNU
2146 packages. The `sysdeps' directory hierarchy is much rearranged.
2147 The file `INSTALL' explains the new scheme in detail.
2149 * The header files no longer need to be processed into ANSI C and
2150 traditional C versions. There is just one set of files to install, and
2151 it will work with ANSI or old C compilers (including `gcc -traditional').
2153 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2154 MIPS DECStation running Ultrix 4.
2156 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2157 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2158 made itself into a shared library.
2160 * Yet further improved support for the i386, running 4.3 BSD-like systems
2161 (such as Mach 3 with the Unix single-server), or System V.
2163 * New function `strncasecmp' to do case-insensitive string comparison
2164 with limited length.
2166 * New function `strsep' is a reentrant alternative to `strtok'.
2168 * New functions `scandir' and `alphasort' for searching directories.
2170 * New function `setenv' is a better interface to `putenv'.
2172 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2173 function for traversing a directory tree.
2175 * The GNU obstack package is now also part of the C library.
2176 The new function `open_obstack_stream' creates a stdio stream that
2177 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2178 formatted output directly to an obstack.
2180 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2181 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2183 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2185 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2186 things to your strings.
2188 * There are some new test programs: test-fseek, testmb, and testrand.
2190 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2191 These ports are not finished, but are a good starting place for really
2192 supporting those systems.
2194 * `/etc/localtime' is now the standard location for the file that says what
2195 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2196 This follows the general principle that `/etc' is the place for all local
2197 configuration files.
2199 * The C library header files now use `extern "C"' when used by the C++
2200 compiler, so the C library should now work with C++ code.
2202 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2203 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2206 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2207 function which uses the `merge sort' algorithm, and is said to be
2208 significantly faster than the old GNU `qsort' function. Merge sort is
2209 now the standard `qsort' function. The new algorithm can require a lot
2210 of temporary storage; so, the old sorting function is called when the
2211 required storage is not available.
2213 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2214 provides the Unix `crypt' function, plus some other entry points.
2216 * The code and header files taken from 4.4 BSD have been updated with the
2217 latest files released from Berkeley.
2219 ----------------------------------------------------------------------
2220 Copyright information:
2222 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2224 Permission is granted to anyone to make or distribute verbatim copies
2225 of this document as received, in any medium, provided that the
2226 copyright notice and this permission notice are preserved,
2227 thus giving the recipient permission to redistribute in turn.
2229 Permission is granted to distribute modified versions
2230 of this document, or of portions of it,
2231 under the above conditions, provided also that they
2232 carry prominent notices stating who last changed them.
2235 version-control: never
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