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 10357, 11120, 11561, 12723, 13550, 13889, 13951, 14142, 14176, 14200,
13 14317, 14327, 14478, 14496, 14812, 14920, 14964, 14981, 14982, 14985,
14 14994, 14996, 15003, 15006, 15020, 15023, 15036, 15054, 15055, 15062,
15 15078, 15160, 15214, 15232, 15234, 15283, 15285, 15287, 15304, 15305,
16 15307, 15327, 15330, 15335, 15337, 15342.
18 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
21 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
22 fixed (Bugzilla #15330).
24 * Add support for calling C++11 thread_local object destructors on thread
25 and program exit. This needs compiler support for offloading C++11
26 destructor calls to glibc.
28 * Improved worst case performance of libm functions with double inputs and
31 * Support for priority inherited mutexes in pthread condition variables on
32 non-x86 architectures.
34 * Added a benchmark framework to track performance of functions in glibc.
36 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
37 It is based on draft TS 18661 and currently enabled as a GNU extension.
41 * The following bugs are resolved with this release:
43 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
44 9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
45 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
46 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
47 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
48 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298, 14303,
49 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417,
50 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519,
51 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576,
52 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648,
53 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743,
54 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805,
55 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835,
56 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872, 14879,
57 14889, 14893, 14898, 14914.
59 * Optimization of memcpy for MIPS.
61 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
62 EMFILE has been fixed (Bugzilla #14889).
64 * The add-on ports collection is now distributed in the "ports" subdirectory
65 of the main GNU C Library distribution, rather than separately.
67 * Port to ARM AArch64 contributed by Linaro.
69 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
70 Optimized versions of memcpy, memset, and memcmp added for System z10 and
72 Implemented by Andreas Krebbel.
74 * The new function secure_getenv allows secure access to the environment,
75 returning NULL if running in a SUID/SGID process. This function replaces
76 the internal function __secure_getenv.
78 * SystemTap static probes have been added into the dynamic linker.
79 Implemented by Gary Benson.
81 * Optimizations of string functions strstr, strcasestr and memmem.
82 Implemented by Maxim Kuvyrkov.
84 * The minimum Linux kernel version that this version of the GNU C Library
85 can be used with is 2.6.16.
87 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
88 powerpc POWER7. Implemented by Will Schmidt.
90 * New configure option --disable-nscd builds the C library such that it
91 never attempts to contact the Name Service Caching Daemon (nscd).
92 New configure option --disable-build-nscd avoids building nscd itself;
93 this is the default if --disable-nscd is used.
95 * Improved support for cross-compilation, including cross-testing and
96 bootstrap builds without a previously built glibc.
98 * Several testsuite tests are now able to test multiple IFUNC variants of an
99 interface, rather than just testing the one that would be chooen by
102 * New configure options --with-bugurl and --with-pkgversion, for
103 distributors to use to embed their bug-reporting and package version
104 information in --help and --version output.
106 * The ttyname and ttyname_r functions on Linux now fall back to searching for
107 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
108 allows creation of chroots without the procfs mounted on /proc.
110 * The `crypt' function now fails if passed salt bytes that violate the
111 specification for those values. On Linux, the `crypt' function will
112 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
113 enabled, and fail on encrypted strings using the MD5 or DES algorithm
114 when the mode is enabled.
116 * The `clock_*' suite of functions (declared in <time.h>) is now available
117 directly in the main C library. Previously it was necessary to link with
118 -lrt to use these functions. This change has the effect that a
119 single-threaded program that uses a function such as `clock_gettime' (and
120 is not linked with -lrt) will no longer implicitly load the pthreads
121 library at runtime and so will not suffer the overheads associated with
122 multi-thread support in other code such as the C++ runtime library.
124 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
129 * The following bugs are resolved with this release:
131 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
132 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
133 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
134 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
135 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
136 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
137 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
138 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
139 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
140 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
141 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
142 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
143 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
144 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
145 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
146 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
147 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
148 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
149 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
150 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
151 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
152 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
155 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
156 configuring glibc with:
157 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
158 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
159 Implemented by H.J. Lu.
163 + define static_assert
165 + do not declare gets
167 + declare at_quick_exit and quick_exit also for ISO C11
169 + aligned_alloc. NB: The code is deliberately allows the size parameter
170 to not be a multiple of the alignment. This is a moronic requirement
171 in the standard but it is only a requirement on the caller, not the
176 + uchar.h support added
178 + CMPLX, CMPLXF, CMPLXL added
180 Implemented by Ulrich Drepper.
182 * Support for the IA-64 has been moved to ports.
184 * Remove support for anything but ELF binary format
186 * Checking versions of poll, ppoll added.
187 Implemented by Ulrich Drepper.
189 * More generic and 64-bit performance optimizations to math functions.
190 Implemented by Ulrich Drepper.
192 * New configure option --enable-obsolete-rpc makes the deprecated RPC
193 headers and functions available at compile time as they were before
194 version 2.14. This option will be removed at some time in the future
195 after the TI-RPC library becomes fully sufficient for the needs of
196 existing applications.
198 * Compatibility code for Linux kernel versions before 2.4 has been removed.
199 Note that glibc is not expected to work with any Linux kernel version
202 * New header <sys/auxv.h> and function getauxval allowing easy access to
203 the AT_* key-value pairs passed from the Linux kernel. The header also
204 defines the HWCAP_* bits associated with the AT_HWCAP key.
206 * New locales: mag_IN
208 * New configure option --enable-systemtap builds SystemTap static probes
209 into libc for setjmp and longjmp and into libpthread for various operations.
210 So far the setjmp/longjmp probes and some of the libpthread probes are
211 provided only for i*86 and x86_64.
212 Implemented by Roland McGrath and Rayson Ho.
214 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
216 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
219 * More optimized functions for SPARC. Implemented by David S. Miller.
221 * Improved support for cross-compilation, especially bootstrap builds
222 without a previously built glibc.
224 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
225 Chris Metcalf from Tilera.
227 * Support for the old ARM ABI has been removed from ports. Only the EABI is
228 now supported for ARM processors.
230 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
231 as the name of the dynamic linker, to distinguish it from the
232 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
234 * Support for CRIS has been removed from ports.
236 * A new class of installed header has been documented for low-level
237 platform-specific functionality. PowerPC added the first instance with a
238 function to provide time base register access. Contributed by Tulio
239 Magno Quites Machado Filho.
241 * ix86 configurations now install header files that are consistent with
242 what x86-64 configurations install. These same header files can be used
243 for -m32, -m64, or -mx32 builds.
244 Contributed by H.J. Lu.
246 * Math library bug fixes. A thorough audit of all open math library bugs was
247 conducted by Joseph Myers. Significant progress was made on many math
248 library bugs resulting in more accurate exceptions and function results.
249 Many thanks to all those that contributed including Andreas Jaeger for his
250 patch review and work on the x87 trigonometric instruction issues.
252 * Timezone data is no longer installed. Timezone-related binaries and scripts
253 will continue to be installed. Users should obtain their timezone data from
254 their distribution provider or from the tzdata package at
255 <ftp://munnari.oz.au/pub/>.
259 * The following bugs are resolved with this release:
261 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
262 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
263 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
264 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
265 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
266 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
267 13484, 13506, 13515, 13523, 13524, 13538, 13540
269 * New program pldd to list loaded object of a process
270 Implemented by Ulrich Drepper.
272 * Add nss_db support back to glibc. No more dependency on Berkeley db
273 and support for initgroups lookups.
274 Implemented by Ulrich Drepper.
276 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
277 Contributed by HJ Lu.
279 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
280 Contributed by HJ Lu.
282 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
283 on x86-32 and x86-64.
284 Contributed by Liubov Dmitrieva.
286 * Optimized strchr and strrchr for SSE on x86-32.
287 Contributed by Liubov Dmitrieva.
289 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
290 for x86-64 and x86-32.
291 Contributed by Liubov Dmitrieva.
293 * New interfaces: scandirat, scandirat64
294 Implemented by Ulrich Drepper.
296 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
297 Implemented by Ulrich Drepper.
299 * nscd now also caches the netgroup database.
300 Implemented by Ulrich Drepper.
302 * Integrate libm with gcc's -ffinite-math-only option.
303 Implemented by Ulrich Drepper.
305 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
306 to math functions. Implemented by Ulrich Drepper.
308 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
309 Implemented by Ulrich Drepper.
311 * New Linux interfaces: process_vm_readv, process_vm_writev
313 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
314 Implemented by Ulrich Drepper.
316 * Optimized nearbyint and strcasecmp for PPC.
317 Implemented by Adhemerval Zanella.
319 * New locales: bho_IN, unm_US, es_CU, ta_LK
323 * The following bugs are resolved with this release:
325 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
326 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
327 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
328 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
329 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
330 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
331 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
332 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
333 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
334 12795, 12811, 12813, 12814, 12841
336 * The RPC implementation in libc is obsoleted. Old programs keep working
337 but new programs cannot be linked with the routines in libc anymore.
338 Programs in need of RPC functionality must be linked against TI-RPC.
339 The TI-RPC implementation is IPv6 enabled and there are other benefits.
341 Visible changes of this change include (obviously) the inability to link
342 programs using RPC functions without referencing the TI-RPC library and the
343 removal of the RPC headers from the glibc headers.
344 Implemented by Ulrich Drepper.
346 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
347 syncfs, setns, sendmmsg
349 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
350 yue_HK, lij_IT, mhr_RU
352 * New encodings: CP770, CP771, CP772, CP773, CP774
354 * New program sotruss to trace calls through PLTs
355 Implemented by Ulrich Drepper.
357 * The malloc hook implementation is marked deprecated and will be removed
358 from the default implementation in the next version. The design never
359 worked ever since the introduction of threads. Even programs which do
360 not create threads themselves can use multiple threads created internally.
364 * The following bugs are resolved with this release:
366 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
367 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
368 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
369 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
372 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
374 * POWER7 optimizations: memset, memcmp, strncmp
376 * New optimized string functions for x86-64: strnlen (SSE2),
377 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
378 Implemented by Ulrich Drepper.
382 * The following bugs are resolved with this release:
384 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
385 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
386 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
387 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
388 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
389 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
390 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
391 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
393 * New interfaces: pthread_getname_np, pthread_setname_np
395 * New Linux interface: recvmmsg
397 * STT_GNU_IFUNC implemented for Sparc by David Miller.
399 * The dynamic linker now recognizes supported ABI versions from the
400 EI_ABIVERSION field in the ELF header.
401 Implemented by Ulrich Drepper.
403 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
404 will not be used to fill in password fields in the passwd.byname replies.
405 Instead it is used to synthesize the shadow.byname table, should it be
406 missing. This is a useful mode in some installations involving Solaris.
407 Implemented by Ulrich Drepper.
409 * New locales: kok_IN, sq_MK, cv_RU
413 * The following bugs are resolved with this release:
415 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
416 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
417 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
418 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
419 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
420 10789, 10817, 10823, 10840, 10847
422 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
424 Implemented by Ulrich Drepper.
426 * Checking version of longjmp added that fails if an uninitialized stack
427 frame would be created. Implemented by Ulrich Drepper.
429 * STT_GNU_IFUNC is now supported in static executables.
430 Implemented by H.J. Lu.
432 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
434 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
435 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
436 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
437 Contributed by H.J. Lu.
439 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
440 Implemented by Ulrich Drepper.
442 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
444 Contributed by H.J. Lu.
446 * Support for fma instruction in AVX on x86-64.
447 Implemented by H.J. Lu and Ulrich Drepper.
449 * AVX support in x86-64 auditing support in ld.so.
450 Implemented by H.J. Lu.
452 * STB_GNU_UNIQUE support added.
453 Implemented by Ulrich Drepper.
455 * Implement second fallback mode for optimized DNS lookup for even more
456 broken environments. If two requests from the same port are not
457 handled correctly close the socket and open a new one before sending
458 the second request. The 'single-request-reopen' option in /etc/resolv.conf
459 can be used to select this mode right away, instead of rediscovering the
460 necessity is every process again.
461 Implemented by Ulrich Drepper.
463 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
464 Implemented by Adam Tkac.
466 * Optimized iconv conversions for S390x.
467 Implemented by Andreas Krebbel.
469 * Using condvars with PI mutexes is now more efficient due to kernel
470 support for requeueing to PI futexes. NPTL support added for x86-64.
471 Implemented by Ulrich Drepper.
473 * New locales: ps_AF, my_MM
477 * The following bugs are resolved with this release:
479 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
480 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
481 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
482 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
483 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
485 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
486 Implemented by Ulrich Drepper.
488 * New Linux interfaces: accept4, fallocate, fallocate64.
489 Implemented by Ulrich Drepper.
491 * Correct declarations of string function when used in C++ code. This
492 could lead to compile errors for invalid C++ code.
494 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
497 * New POSIX 2008 interface: psiginfo
498 Implemented by Ulrich Drepper.
500 * New ISO C++1x interfaces: quick_exit, at_quick_exit
501 Implemented by Ulrich Drepper.
503 * Support for selecting between multiple function definitions at runtime
504 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
506 * The libcrypt library can now use the hash function implementations in
507 NSS. Implemented by Ulrich Drepper.
509 * The malloc implementation can be compiled to be less memory efficient
510 but higher performing in multi-threaded programs.
511 Implemented by Ulrich Drepper.
513 * New locales: nan_TW@latin, ks_IN
515 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
516 Implemented by Ulrich Drepper.
518 * Extended printf hook support. It is possible to use user-defined types
519 and extend existing format specifiers.
520 Implemented by Ulrich Drepper.
522 * Handling for group shadow files has been added.
523 Implemented by Ulrich Drepper.
525 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
526 servers (the case, e.g., for some people using the built-in DNS
527 server in ADSL modems/routers). There is a once-per-process timeout
528 in case of a broken server. To avoid it, users can run nscd or put
529 'options single-request' in /etc/resolv.conf.
530 Implemented by Ulrich Drepper.
534 * The following bugs are resolved with this release:
536 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
537 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
538 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
539 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
540 6968, 6974, 6980, 6995, 7008, 7009, 7029
542 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
543 up at the same time. Implemented by Ulrich Drepper.
545 * TLS descriptors for LD and GD on x86 and x86-64.
546 Implemented by Alexandre Oliva.
548 * getaddrinfo now handles DCCP and UDPlite.
549 Implemented by Ulrich Drepper.
551 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
552 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
553 Implemented by Ulrich Drepper.
555 * New implementation of memmem, strstr, and strcasestr which is O(n).
556 Implemented by Eric Blake.
558 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
560 * Implement "e" option for popen to open file descriptor with the
561 close-on-exec flag set. Implemented by Ulrich Drepper.
563 * Implement "b" mode for fmemopen. In this mode writes writes don't
564 implicitly add a NUL byte and seeks from the end of the buffer really
565 use the buffer end, not the string length as the basis.
566 Implemented by Ulrich Drepper.
568 * Many functions, exported and internal, now atomically set the close-on-exec
569 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
571 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
573 Implemented by Pravin Satpute.
575 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
579 * The following bugs are resolved with this release:
581 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
582 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
583 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
584 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
585 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
586 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
587 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
589 * New locales: bo_CN, bo_IN, shs_CA.
591 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
593 * Sorting rules for some Indian languages (Devanagari and Gujarati).
594 Implemented by Pravin Satpute.
596 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
598 * nscd caches now all timeouts for DNS entries
599 Implemented by Ulrich Drepper.
601 * nscd is more efficient and wakes up less often.
602 Implemented by Ulrich Drepper.
604 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
605 vdprintf, and obstack_vprintf.
606 Implemented by Jakub Jelinek.
608 * Faster memset for x86-64.
609 Implemented by Harsha Jagasia and H.J. Lu.
611 * Faster memcpy on x86.
612 Implemented by Ulrich Drepper.
614 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
615 Implemented by Ulrich Drepper.
617 * Faster sqrt and sqrtf implemention for some PPC variants.
618 Implemented by Steven Munroe.
622 * The following bugs are resolved with this release:
624 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
625 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
626 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
627 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
628 5071, 5103, 5104, 5112, 5113, 5184, 5186
630 * More checking functions: fread, fread_unlocked, open*, mq_open.
631 Implemented by Jakub Jelinek and Ulrich Drepper.
633 * Extend fortification to C++. Implemented by Jakub Jelinek.
635 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
636 by not recognizing 'a' as a modifier when those specs are requested.
637 Implemented by Jakub Jelinek.
639 * PPC optimizations to math and string functions.
640 Implemented by Steven Munroe.
642 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
643 options to be passed. Implemented by Ulrich Drepper.
645 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
647 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
648 Implemented by Ulrich Drepper.
650 * Handle private futexes in the NPTL implementation.
651 Implemented by Jakub Jelinek and Ulrich Drepper.
653 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
654 Implemented by Roland McGrath and Ulrich Drepper.
656 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
658 * SHA-256 and SHA-512 based password encryption.
659 Implemented by Ulrich Drepper.
661 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
662 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
665 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
666 Implemented by Ulrich Drepper.
670 * The following bugs are resolved with this release:
672 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
673 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
674 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
675 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
676 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
677 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
678 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
681 * New Linux interfaces: epoll_pwait, sched_getcpu.
683 * New generic interfaces: strerror_l.
685 * nscd can now cache the services database. Implemented by Ulrich Drepper.
689 * The following bugs are resolved with this release:
691 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
692 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
693 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
694 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
695 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
696 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
697 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
698 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
699 3225, 3251, 3252, 3253, 3273
701 * For Linux, the sorting of addresses returned by getaddrinfo now also
702 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
703 Implemented by Ulrich Drepper.
705 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
706 Implemented by Ulrich Drepper.
708 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
710 * New iconv module for MIK. Contributed by Alexander Shopov.
712 * For sites with broken group and/or passwd database, the auto-propagate
713 option of nscd can prevent creating ID lookup entries from the results
714 of a name lookup and vice versa. This usually is no problem but some
715 site might have problems with the default behavior.
716 Implemented by Ulrich Drepper.
718 * Iterating over entire database in NIS can be slow. With the
719 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
720 to trade time for memory. The entire database will be read at once.
721 Implemented by Ulrich Drepper.
723 * The interfaces introduced in RFC 3542 have been implemented by
726 * Support for the new ELF hash table format was added by Ulrich Drepper.
728 * Support for priority inheritance mutexes added by Jakub Jelinek and
731 * Support for priority protected mutexes added by Jakub Jelinek.
733 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
734 or_IN, csb_PL, fy_NL, sr_ME.
738 * More overflow detection functions.
740 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
741 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
743 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
744 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
745 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
746 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
747 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
748 by Masahide Washizawa.
750 * It is now possible to install audit libraries for the dynamic linker using
751 LD_AUDIT. Implemented by Ulrich Drepper.
753 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
754 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
755 For a libc and libpthread that works well on Linux 2.4 kernels, we
756 recommend using the stable 2.3 branch.
758 * The new function open_wmemstream acts like open_memstream,
759 but uses a wchar_t wide character buffer.
761 * The new function ppoll is an improved version of poll, similar to pselect.
763 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
764 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
765 renameat, unlinkat, linkat, symlinkat, readlinkat.
767 * New Linux kernel system calls: unshare,
768 inotify_init, inotify_add_watch, inotify_rm_watch.
770 * The euidaccess function is now also known by the alias eaccess,
771 for compatibility with some other systems.
773 * Timezone data updated to 2006b version.
777 * The following bugs are resolved with this release:
779 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
780 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
781 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
782 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
783 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
784 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
786 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
788 * As of this release, GCC 4 can be used to compile the C Library.
790 * Timezone data updated to 2005m version.
794 * The following bugs are resolved with this release:
796 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
797 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
798 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
799 777, 787, 821, 822, 823, 825
801 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
805 * Support for RFC 3678. Real implementations exist only for Linux so far.
806 Implemented by Ulrich Drepper.
808 * nscd can now cache entries persistently. Expiring entries are reloaded.
809 For speedups the cache can be shared in memory with client processes.
810 Implemented by Ulrich Drepper.
812 * nscd can now perform SELinux checks.
813 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
815 * getaddrinfo queries are now cached. Canonical name lookup is performed
817 Implemented by Ulrich Drepper.
819 * The nothrow function attribute is used when headers are used by gcc when
820 compiling C code. This can avoid significant amounts of exception
823 * The malloc functions perform more error checking and are stricter when
824 it comes to reacting on errors. The default action is to terminate
825 the process after showing an error message. Implemented by Ulrich Drepper.
827 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
828 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
830 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
831 namespaces using the new function dlmopen(). This feature is of course,
832 like most other dynamic loading functionality, not available in statically
833 linked applications. Implemented by Ulrich Drepper.
835 * Low-overhead boundary checking variants of string and some stdio functions
836 were added. These are to be used in conjunction with a gcc patch by
837 Jakub Jelinek which adds calls to these functions if possible.
838 Implemented by Jakub Jelinek and Ulrich Drepper.
840 * Old code for several operating systems and machine architectures that
841 have not been in working condition in a long time have been removed from
842 the main source tree maintained by the GNU C Library's maintainers.
843 These files are now reside in the separate `ports' source module
844 that is usable as an add-on when building the library.
848 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
849 interrogate the dynamic linker, compatible with the Solaris interface.
851 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
852 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
854 * getifaddrs now uses the netlink interface on Linux to get its information.
855 Implemented by Thorsten Kukuk.
857 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
858 Implemented by Ulrich Drepper.
860 * support for non-executable stacks on x86 has been added. Changes mostly
863 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
866 * getaddrinfo now performs destination address selection according to
871 * Thread-safe interfaces for many functions that access locale data
872 were added in version 2.3, but these features were omitted from NEWS.
873 Many functions have variants with an `_l' suffix that take a `locale_t'
874 object as a parameter rather than consulting the current locale.
875 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
876 create and maintain `locale_t' objects. Additionally, the new function
877 `uselocale' sets "the current locale" (as used by functions not so
878 parameterized) set for an individual thread. These features were added
879 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
881 * The functions getresuid, getresgid, setresuid, and setresgid, which
882 have long been available on Linux, are now declared in <unistd.h>
883 and are now also available on the Hurd.
885 * ELF thread-local storage support (TLS) now works on x86-64.
887 * The new dynamic string token $LIB is expanded in shared library names.
888 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
890 * Aldy Hernandez contributed complete software floating point support for
891 PowerPC machines with no FPU.
893 * fexecve is implemented on Linux.
895 * The `btowc' function should work at least twice as fast due to
896 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
898 * With approriate thread add-ons cancelable functions are now implemented
899 in libc.so as well. No need to call the function in libpthread. This
900 change allowed to finally disable the incorrect and expensive handling
901 of weak definition in ld.so.
903 * Yet more PLT entries in libc.so have been removed. We finally arrived
904 at the bare minimum. Startup times improved appropriately.
906 * Support for the new Linux/x86 system call interface was added. The
907 AT_SYSINFO auxiliary vector entry is recognized and handled.
911 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
914 * iconv (the program and the interface) now accepts empty names (excluding
915 options like //TRANSLIT) to mean "use charset of current locale".
917 * localedef can now transliterate characters in strings which are not in
918 the provided charmap. The information from the input locale is used.
920 * Prelinking support was added for ELF targets. This requires additional
921 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
923 * Read-only stdio streams now use mmap to speed up operation by eliminating
924 copying and buffer underflows. To use add 'm' to the mode string of
925 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
927 * The malloc functions were completely rewritten by Wolfram Gloger based
928 on Doug Lea's malloc-2.7.0.c.
930 * Isamu Hasegawa contributed a completely new and POSIX-conformant
931 implementation of regex.
933 * Bruno Haible upgraded the iconv and locale implementation to support
936 * Contents of the LC_* and LANG environment variables in the CEN style are
937 not recognized anymore. It never was used. Change by Ulrich Drepper.
939 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
940 thread-local storage (TLS) ABI on some platforms.
941 Changes by Ulrich Drepper. SH support by Kaz Kojima.
943 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
944 EUC-JISX0213, and TSCII.
946 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
947 BSD-compatible interface for getting all network interface addresses.
948 Implementation for IPv4 by Roland McGrath.
950 * Loading of locale data is faster due to the introduction of a locale
951 archive. Implemented by Roland McGrath and Ulrich Drepper.
953 * Startup times are significantly reduced by not using exported functions
954 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
957 * Steven Munroe contributed a port to PowerPC64/Linux.
961 * The Hurd now uses the GNU libio implementation of stdio rather than the
962 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
964 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
965 with the same behavior as the Linux system call of the same name.
969 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
970 128-bit long double format.
972 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
973 IBM1161, and IBM1162 charsets.
975 * Andreas Jaeger contributed a port to x86-64/Linux.
977 * Peter Bruin contributed a port to PowerPC/Hurd.
979 * libc functions using I/O streams now can handle wide-oriented streams
982 * optimizations in the dynamic linker. Binaries created by recent binutils
983 versions start up quicker due to reduced time spent on relocations.
985 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
989 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
990 asinh, atanh, j0 for the 128-bit long double format.
992 * Bruno Haible updated all the code handling Unicode in some form to
995 * Speed of regex for single-byte locales is back to previous levels.
996 Patch by Isamu Hasegawa.
998 * Alpha, SPARC, and IA-64 now also using floating stacks.
1000 * Startup time of internationalized applications greatly improved through
1001 iconv cache. Use iconvconfig to generate the cache file.
1002 Contributed by Ulrich Drepper.
1004 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1005 severe performance problems. Patch by David Mosberger.
1007 * The Hurd port got a lot more functionality like AIO, various stdio
1008 extensions, etc. Mainly done by Roland McGrath.
1010 * mtrace can now lookup symbols in shared libraries.
1014 * Intel's IA-64 math library is largely integrated. It provides fast and
1015 accurate implementatations for most basic and standard math functions
1016 in float, double, and long double format.
1018 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1019 and asin for the 96-bit long double format and asin, log, tan for the
1020 128-bit long double format.
1022 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1023 The basic double functions exist today. Contributed by Abraham Ziv
1024 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1025 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1027 * An asynchronous name lookup library was added. The interface is designed
1028 after POSIX AIO. The proposal was circulated beforehand to get comments.
1029 No negative ones came in. Implemented by Ulrich Drepper.
1031 * Port to S390/64bit contributed by Martin Schwidefsky
1032 <schwidefsky@de.ibm.com>.
1034 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1035 of functions for Linux/IA-64.
1037 * The RPC code is now thread safe. Threads can now use the same service
1038 of different services at the same time. Patch by Eric Norum
1039 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1041 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1042 family of functions for Linux/S390.
1044 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1045 of functions for Linux/x86.
1047 * Port to Linux/CRIS contributed by Axis Communications.
1051 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1052 we can now check for namespace violations and missing declarations. The
1053 result is that almost all headers are now Unix-compliant (as defined in
1054 the upcoming XPG6). The negative side is that some programs might need
1055 corrections, too, if they depend on the incorrect form of the headers in
1056 previous versions which defined too many symbols and included too many
1059 * regex now handles multibyte character sets correctly.
1060 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1062 * iconv (the program) does now conform to the upcoming XPG6 and handles
1063 charmaps. Instead of the charset names the path of charmaps can be
1064 provided and the conversion happens based on this data.
1065 Contributed by Ulrich Drepper.
1067 * The locale program now provides detailed information about the installed
1072 only lists the names of the supported locales
1076 provides details such as country, language, and codeset name.
1077 Contributed by Ulrich Drepper.
1081 * The gencat program now parses the input file according to the charset
1082 selected by the LC_CTYPE category. This is important for stateful
1083 character sets. To make generating catalogs easier there is a way
1084 to overwrite the charset selected by the locale: before the first
1085 message or $ quote line the catalog can contain a line like
1087 $ codeset=ISO-8859-2
1089 to select the charset (ISO-8859-2 in this case).
1091 Implemented by Shinya Hanataka and Ulrich Drepper.
1093 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1094 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1095 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1097 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1098 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1100 * The LANGUAGE environment variable is now ignored unless the locale is
1101 changed from the default "C" locale.
1103 * The usual bug fixes.
1107 * Greg McGary added runtime support for bounds checking using gcc's
1108 new -fbounded-pointers option. ix86 target is complete. PowerPC
1111 * Thorsten Kukuk added secure mode support to nscd.
1113 * The Berkeley db libraries have been removed.
1115 Related, the nss_db module is now in a separate package since it
1116 obviously requires a database library being available.
1118 * Wide character I/O streams implemented by Ulrich Drepper.
1120 * Functions from the extended socket API added by Ulrich Drepper.
1122 * Functions feenableexcept and fedisableexcept to control the
1123 behaviour of individual exceptions have been added by Andreas Jaeger.
1125 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1127 * The resolver code has been updated from bind 8.2.3-T5B which supports
1128 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1131 This change could in some situations effect backward compatibility. Since
1132 now `_res' is a thread-local instead of a global variable, modifying it
1133 in one thread does not have any effect in other threads.
1135 The resolver library was also extended to allow IPv6 as the transport
1136 protocol for the requests. This work was done by Stig Venaas.
1138 * Compatibility code for K&R C compilers has been removed from the
1139 header files. A ISO C compiler is needed to use the library
1140 (conforming to either C89 or C99 standard).
1142 * Complete rewrite of the localedef program to support multibyte character
1143 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1144 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1145 Implemented by Ulrich Drepper.
1147 Bruno Haible significantly improved the generation and use of the data
1148 structures for the wide character tables.
1150 * Plural handling in gettext implemented by Ulrich Drepper.
1152 * The utmp daemon has been removed.
1154 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1156 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1159 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1161 * POSIX barriers implemented by Kaz Kylheku.
1163 * POSIX spawn function family implemented by Ulrich Drepper.
1165 * POSIX spinlocks are now available.
1167 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1169 * the configure option --enable-kernel=X.Y.Z allows to strip out
1170 compatibility for kernel versions before X.Y.Z. This is currently only
1171 implemented for Linux.
1173 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1174 field sin6_scope_id. This means that all programs using IPv6 should be
1175 recompiled. Don't expect binary compatibility with previous glibc
1178 * various conversion modules for IBM character sets contributed by
1181 * IA-64 port by Jes Sorensen and HJ Lu.
1195 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1197 * New xdr functions are added; some rpc functions are now 64bit clean.
1199 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1201 * Fixed known incompatibilities with glibc 2.0.
1203 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1205 * Optimized a number of functions (especially the ELF dynamic loader).
1207 * Update timezone data files.
1209 * lots of charmaps corrections
1211 * some new locale definitions and charmaps
1216 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1217 conform to POSIX member type requirements. Symbol versions have been
1218 adjusted as needed within the library, and for direct use by applications,
1219 but there is potential for problems if third-party libraries use
1220 struct timeval as part of their interface. This does not present
1221 a problem for X and other "essential" system libraries.
1223 * An additional locale model to support C++ Standard Library locale
1224 model and probably more was implemented by Ulrich Drepper.
1226 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1229 * Miles Bader provided the `argp' function family to support hierachical
1230 command line argument parsing, layered on top of getopt.
1232 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1234 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1237 * scanf recognizes the %a and %A format for scanning floating point numbers.
1239 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1240 information and interfaces for the available integer types.
1242 * about 130 new math functions were added to implement the ISO C9x math
1245 * the new header <complex.h> contains definitions of the complex math
1246 functions from ISO C 9X.
1248 * the new header <tgmath.h> defines generic macros to use complex or
1249 real valued functions.
1251 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1253 * Andreas Jaeger provided a test suite for the math library.
1255 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1257 * Ulrich Drepper added character set conversion functions (iconv).
1259 * Optimized string functions have been added.
1261 * The localedata addon is now part of glibc.
1263 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1265 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1266 daemon for NSS (nscd).
1268 Missing a better place here are some numbers on improvements. Under
1269 Linux 2.1.125 un-tar-ing the kernel sources takes
1273 using local files 12.19s 6.88s 22.91s
1275 using NIS 13.92s 8.91s 26.34s
1277 using NIS & nscd 10.37s 7.34s 25.30s
1279 using NIS+ 27.57s 30.37s 640.46s
1281 using NIS+ & nscd 10.25s 7.83s 26.51s
1283 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1285 Keep in mind that non-namelookup related operations dominate above times.
1286 It was just a common complain that using NIS+ unpacking the kernel is
1289 [1] The old nscd implementation is not available anymore since it was
1290 distributed with glibc up to version 2.0.98 and thus is now replaced.
1292 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1294 * Mark Kettenis provided a Hesiod NSS module.
1296 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1297 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1299 * rcmd can now handle netgroups (Dick Streefland).
1301 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1304 * Support for the IPv6 protocol has been added to the socket API, as per the
1305 latest draft standards.
1307 * Support for Linux 2.2 has been added.
1309 * Interface changes relative to the latest 2.0.x release:
1310 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1311 addseverity NEW: Unix98
1312 alphasort64 NEW: LFS
1313 argp_err_exit_status NEW: argp, GNU ext
1314 argp_error NEW: argp, GNU ext
1315 argp_failure NEW: argp, GNU ext
1316 argp_help NEW: argp, GNU ext
1317 argp_parse NEW: argp, GNU ext
1318 argp_program_bug_address NEW: argp, GNU ext
1319 argp_program_version NEW: argp, GNU ext
1320 argp_program_version_hook NEW: argp, GNU ext
1321 argp_state_help NEW: argp, GNU ext
1322 argp_usage NEW: argp, GNU ext
1323 authdes_create NEW: Secure RPC
1324 authdes_getucred NEW: Secure RPC
1325 authdes_pk_create NEW: Secure RPC
1326 backtrace NEW: GNU ext.
1327 backtrace_symbols NEW: GNU ext.
1328 backtrace_symbols_fd NEW: GNU ext.
1330 cacosf NEW: ISO C 9x
1331 cacosh NEW: ISO C 9x
1332 cacoshf NEW: ISO C 9x
1333 cacoshl NEW: ISO C 9x
1334 cacosl NEW: ISO C 9x
1341 casinf NEW: ISO C 9x
1342 casinh NEW: ISO C 9x
1343 casinhf NEW: ISO C 9x
1344 casinhl NEW: ISO C 9x
1345 casinl NEW: ISO C 9x
1347 catanf NEW: ISO C 9x
1348 catanh NEW: ISO C 9x
1349 catanhf NEW: ISO C 9x
1350 catanhl NEW: ISO C 9x
1351 catanl NEW: ISO C 9x
1352 cbc_crypt NEW: Secure RPC
1356 ccoshf NEW: ISO C 9x
1357 ccoshl NEW: ISO C 9x
1363 cimagf NEW: ISO C 9x
1364 cimagl NEW: ISO C 9x
1365 clearerr_locked REMOVED
1366 clntunix_create NEW: sunrpc ext
1368 clog10 NEW: ISO C 9x
1369 clog10f NEW: ISO C 9x
1370 clog10l NEW: ISO C 9x
1380 cprojf NEW: ISO C 9x
1381 cprojl NEW: ISO C 9x
1383 crealf NEW: ISO C 9x
1384 creall NEW: ISO C 9x
1389 csinhf NEW: ISO C 9x
1390 csinhl NEW: ISO C 9x
1393 csqrtf NEW: ISO C 9x
1394 csqrtl NEW: ISO C 9x
1398 ctanhf NEW: ISO C 9x
1399 ctanhl NEW: ISO C 9x
1401 des_setparity NEW: Secure RPC
1402 ecb_crypt NEW: Secure RPC
1403 endutxent NEW: Unix98
1405 exp10f NEW: ISO C 9x
1406 exp10l NEW: ISO C 9x
1410 fattach NEW: STREAMS
1411 fdetach NEW: STREAMS
1415 feclearexcept NEW: ISO C 9x
1416 fegetenv NEW: ISO C 9x
1417 fegetexceptflag NEW: ISO C 9x
1418 fegetround NEW: ISO C 9x
1419 feholdexcept NEW: ISO C 9x
1421 feraiseexcept NEW: ISO C 9x
1422 ferror_locked REMOVED
1423 fesetenv NEW: ISO C 9x
1424 fesetexceptflag NEW: ISO C 9x
1425 fesetround NEW: ISO C 9x
1426 fetestexcept NEW: ISO C 9x
1427 feupdateenv NEW: ISO C 9x
1428 fflush_locked REMOVED
1432 fgets_unlocked NEW: GNU ext.
1433 fileno_locked REMOVED
1445 fputc_locked REMOVED
1446 fputs_unlocked NEW: GNU ext.
1447 fread_unlocked NEW: GNU ext.
1452 fstatvfs NEW: Unix98
1456 ftruncate64 NEW: LFS
1458 fwrite_unlocked NEW: GNU ext.
1459 gai_strerror NEW: IPv6
1463 getchar_locked REMOVED
1465 getdate_err NEW: Unix98
1466 getdate_r NEW: GNU ext.
1468 getnameinfo NEW: IPv6
1469 getnetname NEW: Secure RPC
1470 getpmsg NEW: STREAMS
1471 getpt NEW: Unix98 PTY
1472 getrlimit64 NEW: LFS
1473 getutxent NEW: Unix98
1474 getutxid NEW: Unix98
1475 getutxline NEW: Unix98
1476 glob64 NEW: GNU ext.
1477 globfree64 NEW: GNU ext.
1478 gnu_get_libc_release NEW: GNU ext.
1479 gnu_get_libc_version NEW: GNU ext.
1480 grantpt NEW: Unix98 PTY
1481 host2netname NEW: Secure RPC
1483 iconv_close NEW: iconv
1484 iconv_open NEW: iconv
1485 if_freenameindex NEW: IPv6
1486 if_indextoname NEW: IPv6
1487 if_nameindex NEW: IPv6
1488 if_nametoindex NEW: IPv6
1489 in6addr_any NEW: IPv6
1490 in6addr_loopback NEW: IPv6
1491 inet6_isipv4mapped NEW: IPv6
1492 isastream NEW: STREAMS
1493 iswblank NEW: GNU ext.
1494 key_decryptsession NEW: Secure RPC
1495 key_decryptsession_pk NEW: Secure RPC
1496 key_encryptsession NEW: Secure RPC
1497 key_encryptsession_pk NEW: Secure RPC
1498 key_gendes NEW: Secure RPC
1499 key_get_conv NEW: Secure RPC
1500 key_secretkey_is_set NEW: Secure RPC
1501 key_setnet NEW: Secure RPC
1502 key_setsecret NEW: Secure RPC
1503 llrint NEW: ISO C 9x
1504 llrintf NEW: ISO C 9x
1505 llrintl NEW: ISO C 9x
1506 llround NEW: ISO C 9x
1507 llroundf NEW: ISO C 9x
1508 llroundl NEW: ISO C 9x
1513 lrintf NEW: ISO C 9x
1514 lrintl NEW: ISO C 9x
1515 lround NEW: ISO C 9x
1516 lroundf NEW: ISO C 9x
1517 lroundl NEW: ISO C 9x
1519 makecontext NEW: Unix98
1520 mempcpy NEW: GNU ext.
1523 modify_ldt NEW: kernel
1527 nearbyint NEW: ISO C 9x
1528 nearbyintf NEW: ISO C 9x
1529 nearbyintl NEW: ISO C 9x
1530 netname2host NEW: Secure RPC
1531 netname2user NEW: Secure RPC
1532 nexttoward NEW: ISO C 9x
1533 nexttowardf NEW: ISO C 9x
1534 nexttowardl NEW: ISO C 9x
1538 passwd2des NEW: Secure RPC
1540 pow10f NEW: GNU ext.
1541 pow10l NEW: GNU ext.
1544 printf_size NEW: GNU ext.
1545 printf_size_info NEW: GNU ext.
1546 profil_counter REMOVED
1547 pthread_mutexattr_getkind_np REPLACED
1548 pthread_mutexattr_setkind_np REPLACED
1549 ptsname NEW: Unix98 PTY
1550 ptsname_r NEW: Unix98 PTY
1552 putchar_locked REMOVED
1553 putgrent NEW: GNU ext.
1555 putpmsg NEW: STREAMS
1556 pututxline NEW: Unix98
1560 readdir64_r NEW: LFS
1561 remquo NEW: ISO C 9x
1562 remquof NEW: ISO C 9x
1563 remquol NEW: ISO C 9x
1565 roundf NEW: ISO C 9x
1566 roundl NEW: ISO C 9x
1568 scalbln NEW: ISO C 9x
1569 scalblnf NEW: ISO C 9x
1570 scalblnl NEW: ISO C 9x
1572 sendfile NEW: kernel
1573 setcontext NEW: Unix98
1574 setrlimit64 NEW: LFS
1575 setutxent NEW: Unix98
1577 sigignore NEW: Unix98
1578 sigqueue NEW: POSIX.1b
1579 sigrelse NEW: Unix98
1580 sigset NEW: POSIX.1b
1581 sigtimedwait NEW: POSIX.1b
1582 sigwaitinfo NEW: POSIX.1b
1583 sincos NEW: GNU ext.
1584 sincosf NEW: GNU ext.
1585 sincosl NEW: GNU ext.
1589 strcasestr NEW: GNU ext.
1590 strtoimax NEW: ISO C 9x
1591 strtoumax NEW: ISO C 9x
1592 strverscmp NEW: GNU ext.
1593 svcauthdes_stats NEW: Secure RPC
1594 svcunix_create NEW: sunrpc etx
1595 svcunixfd_create NEW: sunrpc ext
1596 swapcontext NEW: Unix98
1597 tcgetsid NEW: Unix98 PTY
1598 tdestroy NEW: GNU ext.
1599 tgamma NEW: ISO C 9x
1600 tgammaf NEW: ISO C 9x
1601 tgammal NEW: ISO C 9x
1605 truncf NEW: ISO C 9x
1606 truncl NEW: ISO C 9x
1608 unlockpt NEW: Unix98 PTY
1609 updwtmpx NEW: Unix98
1610 user2netname NEW: Secure RPC
1611 utmpxname NEW: Unix98
1612 versionsort NEW: GNU ext.
1613 versionsort64 NEW: GNU ext.
1615 wcscasecmp NEW: GNU ext.
1616 wcsncasecmp NEW: GNU ext.
1617 wcsnlen NEW: GNU ext.
1618 wcstoimax NEW: ISO C 9x
1619 wcstoll NEW: ISO C 9x
1620 wcstoull NEW: ISO C 9x
1621 wcstoumax NEW: ISO C 9x
1623 wordexp NEW: POSIX.2
1624 wordfree NEW: POSIX.2
1625 write_profiling REMOVED
1626 xdecrypt NEW: Secure RPC
1627 xdr_authdes_cred NEW: Secure RPC
1628 xdr_authdes_verf NEW: Secure RPC
1629 xdr_cryptkeyarg NEW: Secure RPC
1630 xdr_cryptkeyarg2 NEW: Secure RPC
1631 xdr_cryptkeyres NEW: Secure RPC
1632 xdr_getcredres NEW: Secure RPC
1633 xdr_key_netstarg NEW: Secure RPC
1634 xdr_key_netstres NEW: Secure RPC
1635 xdr_keybuf NEW: Secure RPC
1636 xdr_keystatus NEW: Secure RPC
1637 xdr_netnamestr NEW: Secure RPC
1638 xdr_sizeof NEW: Secure RPC
1639 xdr_unixcred NEW: sunrpc ext
1640 xencrypt NEW: Secure RPC
1641 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1652 * inet_ntoa is thread-safe
1654 * updwtmp is moved from libutil to libc
1656 * rewrite of cbrt function
1658 * update of timezone data
1672 * add atoll function
1674 * fix complex problems in Berkeley DB code
1676 * fix math functions
1680 * fixed lots of header problems (especially Linux/GNU specific)
1682 * dynamic loader preserves all registers
1684 * Roland McGrath provided support for handling of auxiliary objects in
1685 the ELF dynamic loader.
1687 * support for parallel builds is improved
1691 * GNU extensions are no longer declared by default. To enable them you
1692 must define the macro `_GNU_SOURCE' in your program or compile with
1695 * The library has changed from using GNU ld symbol aliases to using weak
1696 symbols where available. The ELF object file format supports weak
1697 symbols; GNU ld also supports weak symbols in the a.out format. (There
1698 is also now support for other GNU ld extensions in ELF. Use the
1699 `--with-elf' option to configure to indicate you have ELF, and
1700 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1701 of many files which contained only symbol aliases, reducing the size of
1702 the source and the compiled library; many other files were renamed to
1703 less cryptic names previously occupied by the symbol alias files.
1704 There is a new header file <elf.h> for programs which operate on
1705 files in the ELF format.
1707 * Converted to Autoconf version 2, so `configure' has more options.
1708 Run `configure --help' to see the details.
1710 * The library can now be configured to build profiling, highly-optimized
1711 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1712 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1713 `configure' enable building these extra libraries. The shared library is
1714 built by default when using both ELF and GNU ld. When shared libraries
1715 are enabled, the new library `-ldl' is available for arbitrary run-time
1716 loading of shared objects; its interface is defined in <dlfcn.h>. The
1717 new header file <link.h> gives access to the internals of the run-time
1718 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1719 application of same name on other systems and it provides information
1720 about dynamically linked binaries.
1722 * The C library now provides the run-time support code for profiling
1723 executables compiled with `-pg'. Programs can control the profiling code
1724 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1725 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1726 the support for this file format was contributed by David Mosberger-Tang.
1728 * The math code has been replaced with a math library based on fdlibm from
1729 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1730 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1731 functions. The math functions now reside in a separate library, so
1732 programs using them will need to use `-lm' their linking commands.
1734 * John C. Bowman contributed optimized ix87 assembler inline functions.
1736 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1737 mechanism similar to that found in Solaris 2. This is now used for the
1738 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1739 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1740 file controls what services are used for each individual database. This
1741 works by loading shared libraries with names specified in `nsswitch.conf',
1742 so service modules can be changed or added at any time without even
1743 relinking any program. Currently there are the file, db, and NIS based
1744 NSS services available.
1746 * The new functions `strtoq' and `strtouq' parse integer values from
1747 strings, like `strtol' and `strtoul', but they return `long long int' and
1748 `unsigned long long int' values, respectively (64-bit quantities).
1750 * The new functions `strtof' and `strtold' parse floating-point values from
1751 strings, like `strtod', but they return `float' and `long double' values,
1752 respectively (on some machines `double' and `long double' are the same).
1754 * Ulrich Drepper has contributed new implementations of the floating-point
1755 printing and reading code used in the `printf' family of functions and
1756 `strtod', `strtof', and `strtold'. These new functions are perfectly
1757 accurate, and much faster than the old ones.
1759 * The implementation of the POSIX locale model was completely rewritten by
1760 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1761 to compile the POSIX locale definition.
1763 * The former dummy implementations of the strcoll and strxfrm function are
1764 now replaced by fully functional code contributed by Ulrich Drepper. The
1765 collation information comes from the POSIX locale definitions.
1767 * The new header <langinfo.h> defines an interface for accessing
1768 various locale-dependent data (using the locale chosen with `setlocale').
1770 * Ulrich Drepper has contributed a new suite of functions for operation on
1771 wide-character and multibyte-character strings, in <wchar.h>;
1772 and classification and case conversion of wide characters, in <wctype.h>.
1773 These new functions are conforming to the ISO C, Amendement 1 specification.
1775 * There is now a second implementation of the standard I/O library available.
1776 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1777 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1779 * You can now use positional parameter specifications in format strings
1780 for the `printf' and `scanf' families of functions. For example,
1781 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1782 ``Number 6, Mr Jones''. This is mainly useful when providing different
1783 format strings for different languages, whose grammars may dictate
1784 different orderings of the values being printed. To support this
1785 feature, the interface for `register_printf_handler' has changed; see
1786 the header file <printf.h> for details.
1788 * The `printf' and `scanf' families of functions now understand a new
1789 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1790 to group numbers as indicated by the locale; for `scanf' and friends, this
1791 says to accept as valid only a number with all the proper grouping
1792 separators in the right places. In the default "C" locale, numbers are
1793 not grouped; but locales for specific countries will define the usual
1794 conventions (i.e. separate thousands with `,' in the US locale).
1796 * The pgrp functions have been regularized, slightly incompatibly but much
1797 less confusingly. The core functions are now `getpgid' and `setpgid',
1798 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1799 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1800 provided for compatibility. There is no longer an incompatible `getpgrp'
1801 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1803 * The new header file <fts.h> and suite of functions simplify programs that
1804 operate on directory trees. This code comes from 4.4 BSD.
1806 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1807 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1808 NSS scheme used in glibc.
1810 * There is a new malloc debugging hook `__memalign_hook'.
1812 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1813 `unsigned int' in <sys/types.h>. These are for compatibility only and
1814 their use is discouraged.
1816 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1817 done differently, so that it works even without GNU ld.
1819 * New function `euidaccess' checks allowed access to a file like `access',
1820 but using the effective IDs instead of the real IDs.
1822 * The time zone data files have been updated for the latest and greatest
1823 local time conventions of the countries of the world.
1825 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1828 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1829 for formatting floating-point numbers. They are provided only for
1830 compatibility; new programs should use `sprintf' instead. There are
1831 also equivalent function for the `long double' floating-point type and
1832 all functions also exist in a reentrant form.
1834 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1835 functions for maintaining the login-record files (primarily of use to
1836 system programs such as `login'), and convenient functions for
1837 allocating and initializing a pseudo-terminal (pty) device.
1839 * Ulrich Drepper has contributed new support for System V style
1840 shared memory and IPC on systems that support it.
1842 * Ulrich Drepper has contributed several miscellaneous new functions found
1843 in System V: The `hsearch' family of functions provide an effective
1844 implementation of hash tables; `a64l' and `l64a' provide a very simple
1845 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1848 * Ulrich Drepper has contributed new reentrant counterparts for the
1849 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1851 * Ulrich Drepper has contributed new, highly-optimized versions of several
1852 string functions for the i486/Pentium family of processors.
1854 * Ulrich Drepper has updated the Linux-specific code, based largely
1855 on work done in Hongjiu Lu's version of GNU libc for Linux.
1856 The GNU library now supports Linux versions 2.0.10 and later,
1857 using the ELF object file format (i[3456]86-*-linux).
1859 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1861 * David Mosberger-Tang and Richard Henderson have ported the C library
1862 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1863 dynamic linking support for ELF/Alpha.
1865 * Richard Henderson contributed several Alpha optimized assembler function
1866 for arithmetic and string handling.
1868 * Ulrich Drepper has contributed a new set of message catalog functions to
1869 support multiple languages using the <libintl.h> interface, for use with
1870 his new package GNU gettext. Translation volunteers have contributed
1871 catalogs of the library's messages in Spanish, German, and Korean.
1873 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1874 program and the `catgets' function for reading the catalog files it
1875 creates. (The <libintl.h> interface is preferred; we include the
1876 <nl_types.h> interface using `catgets' only for source compatibility with
1877 programs already written to use it.)
1879 * New header file <values.h> gives SVID-compatible names for <limits.h>
1882 * Various new macros, declarations, and small header files for compatibility
1885 * New function `group_member' is a convenient way to check if a process has
1886 a given effective group ID.
1888 * When using GCC 2.7 and later, the socket functions are now declared in a
1889 special way so that passing an argument of type `struct sockaddr_in *',
1890 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1891 `struct sockaddr *' type, does not generate a type-clash warning.
1893 * New function `error' declared in header file <error.h> is a convenient
1894 function for printing error messages and optionally exiting; this is the
1895 canonical function used in GNU programs. The new functions `err', `warn',
1896 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1897 doing the same thing.
1899 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1900 POSIX.2 `glob' function to do ~ and {...} expansion.
1902 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1903 `clearenv' which is used in POSIX.9 is also available.
1905 * New function `getsid' returns session ID number on systems that support it.
1907 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1908 files <db.h> and <mpool.h> provide a rich set of functions for several
1909 types of simple databases stored in memory and in files, and <ndbm.h> is
1910 an old `ndbm'-compatible interface using the `db' functions. Link with
1911 `-ldb' to get these functions.
1913 * New macro `strdupa' copies a string like `strdup', but uses local stack
1914 space from `alloca' instead of dynamic heap space from `malloc'.
1916 * New function `strnlen' is like `strlen' but searches only a given maximum
1917 number of characters for the null terminator. `stpncpy', `strndup' and
1918 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1921 * New function `statfs' in header <sys/statfs.h>.
1923 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1924 provide convenient functions for operating on blocks of null-terminated
1927 * A new suite of functions in <utmp.h> handle all the details of reading
1928 and writing the utmp file.
1930 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1933 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1934 completely POSIX compliant and also implemented the extended functionality
1935 to handle alternate digit representation and alternate era date formats.
1937 * Ulrich Drepper provided an implementation of the `strptime' function
1938 defined in XPG4.2 which transforms a string into a `struct tm' value.
1940 * Paul Eggert provided the tzselect shell script as part of the timezone
1941 code. The shell script makes it easy to select the correct timezone
1944 * The implementation of the malloc family of functions is completely replaced
1945 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1946 The implementation uses the mmap function (if available) and it is
1947 optimized for the use in multi threaded programs.
1949 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1950 functions. This new functionality is usable by specifying a special
1951 salt string and it is compatible with implementation on *BSD systems.
1953 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1954 `getsubopt' to handle second level command line options, `bsd_signal'
1955 to access BSD style `signal' functionality, the obsolete `regexp' style
1958 * the `lchown' function is available on system which support this
1961 * The implementation of the shadow password handling function was contributed
1964 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1966 * POSIX.1g support was added. The <sys/select.h> header is available,
1967 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1968 implementation of `getaddrinfo'.
1972 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1974 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1975 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1977 * The new function `daemon' from 4.4 BSD is useful for server programs that
1978 want to put themselves in the background.
1980 * Joel Sherrill has contributed support for several standalone boards that
1981 run without an operating system.
1983 * `printf', `scanf' and friends now accept a `q' type modifier for long
1984 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1986 * All of the code taken from BSD (notably most of the math and networking
1987 routines) has been updated from the BSD 4.4-Lite release.
1989 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1991 * The new functions `getdomainname' and `setdomainname' fetch or change the
1992 YP/NIS domain name. These are system calls which exist on systems which
1995 * The time zone data files have been updated for the latest international
1998 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1999 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2003 * The C library now includes support for Sun RPC, from Sun's free
2004 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2005 are included. (There is still no support for YP.)
2007 * Tom Quinn has contributed a port of the C library to SGI machines running
2008 Irix 4 (mips-sgi-irix4).
2010 * The new `lockf' function is a simplified interface to the locking
2011 facilities of `fcntl', included for compatibility.
2013 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2015 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2017 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2020 * The error message printed by `assert' for a failed assertion now includes
2021 the name of the program (if using GNU ld) and the name of the calling
2022 function (with versions of GCC that support this).
2024 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2026 * The library now includes the <sys/mman.h> header file and memory
2027 management functions `mmap', `munmap', `mprotect', `msync', and
2028 `madvise', on systems that support those facilities.
2030 * The interface for `mcheck' has changed slightly: the function called to
2031 abort the program when an allocation inconsistency is detected now takes
2032 an argument that indicates the type of failure. The new function
2033 `mprobe' lets you request a consistency check for a particular block at
2034 any time (checks are normally done only when you call `free' or `realloc'
2037 * It is now possible to easily cross-compile the C library, building on one
2038 system a library to run on another machine and/or operating system. All
2039 you need to do is set the variable `HOST_CC' in `configparms' to the
2040 native compiler for programs to run on the machine you are building on (a
2041 few generator programs are used on Unix systems); set `CC' to the
2044 * The new function `fexecve' (only implemented on the GNU system) executes
2045 a program file given a file descriptor already open on the file.
2049 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2050 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2052 * You can set the variable `libprefix' in `configparms' to specify a prefix
2053 to be prepended to installed library files; this makes it easy to install
2054 the GNU C library to be linked as `-lgnuc' or whatever.
2056 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2057 copies a limited number of characters from a string, and returns the
2058 address of the last character written.
2060 * You no longer need to check for whether the installed `stddef.h' is
2061 compatible with the GNU C library. configure now checks for you.
2063 * You can now define a per-stream `fileno' function to convert the
2064 stream's cookie into an integral file descriptor.
2066 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2067 allocates zero bytes of storage, and returns a unique pointer which
2068 you can pass to `realloc' or `free'. The behavior is undefined if
2069 you dereference this pointer.
2071 * The C library now runs on Sony NEWS m68k machines running either
2072 NewsOS 3 or NewsOS 4.
2074 * The new `syscall' function is a system-dependent primitive function
2075 for invoking system calls. It has the canonical behavior on Unix
2076 systems, including unreliable return values for some calls (such as
2077 `pipe', `fork' and `getppid').
2079 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2080 to `EAGAIN', which is the preferred name. On systems whose kernels
2081 use two distinct codes, the C library now translates EWOULDBLOCK to
2082 EAGAIN in every system call function.
2086 * The GNU C Library Reference Manual is now distributed with the library.
2087 `make dvi' will produce a DVI file of the printed manual.
2088 `make info' will produce Info files that you can read on line using C-h i
2089 in Emacs or the `info' program.
2090 Please send comments on the manual to bug-glibc-manual@gnu.org.
2092 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2094 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2096 * Jason Merrill has contributed a port to the Sequent Symmetry running
2097 Dynix version 3 (i386-sequent-dynix).
2099 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2100 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2102 * New function `memory_warnings' lets you arrange to get warnings when
2103 malloc is running out of memory to allocate, like Emacs gives you.
2105 * The C library now contains the relocating allocator used in Emacs 19 for
2106 its editing buffers. This allocator (ralloc) minimizes allocation
2107 overhead and fragmentation by moving allocated regions around whenever it
2108 needs to. You always refer to a ralloc'd region with a "handle" (a
2109 pointer to a pointer--an object of type `void **').
2111 * There is a new `printf' format: `%m' gives you the string corresponding
2112 to the error code in `errno'.
2114 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2115 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2116 pass, the `a' modifier says to fill in a `char **' you pass with a
2119 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2120 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2121 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2123 * `mkstemp' is a traditional Unix function to atomically create and open a
2124 uniquely-named temporary file.
2128 * The standard location for the file that says what the local timezone is
2129 has changed again. It is now `/usr/local/etc/localtime' (or more
2130 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2132 * The distribution no longer contains any files with names longer than 14
2135 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2136 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2138 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2142 * The configuration process has changed quite a bit. The `configure'
2143 script is now used just like the configuration scripts for other GNU
2144 packages. The `sysdeps' directory hierarchy is much rearranged.
2145 The file `INSTALL' explains the new scheme in detail.
2147 * The header files no longer need to be processed into ANSI C and
2148 traditional C versions. There is just one set of files to install, and
2149 it will work with ANSI or old C compilers (including `gcc -traditional').
2151 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2152 MIPS DECStation running Ultrix 4.
2154 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2155 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2156 made itself into a shared library.
2158 * Yet further improved support for the i386, running 4.3 BSD-like systems
2159 (such as Mach 3 with the Unix single-server), or System V.
2161 * New function `strncasecmp' to do case-insensitive string comparison
2162 with limited length.
2164 * New function `strsep' is a reentrant alternative to `strtok'.
2166 * New functions `scandir' and `alphasort' for searching directories.
2168 * New function `setenv' is a better interface to `putenv'.
2170 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2171 function for traversing a directory tree.
2173 * The GNU obstack package is now also part of the C library.
2174 The new function `open_obstack_stream' creates a stdio stream that
2175 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2176 formatted output directly to an obstack.
2178 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2179 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2181 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2183 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2184 things to your strings.
2186 * There are some new test programs: test-fseek, testmb, and testrand.
2188 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2189 These ports are not finished, but are a good starting place for really
2190 supporting those systems.
2192 * `/etc/localtime' is now the standard location for the file that says what
2193 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2194 This follows the general principle that `/etc' is the place for all local
2195 configuration files.
2197 * The C library header files now use `extern "C"' when used by the C++
2198 compiler, so the C library should now work with C++ code.
2200 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2201 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2204 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2205 function which uses the `merge sort' algorithm, and is said to be
2206 significantly faster than the old GNU `qsort' function. Merge sort is
2207 now the standard `qsort' function. The new algorithm can require a lot
2208 of temporary storage; so, the old sorting function is called when the
2209 required storage is not available.
2211 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2212 provides the Unix `crypt' function, plus some other entry points.
2214 * The code and header files taken from 4.4 BSD have been updated with the
2215 latest files released from Berkeley.
2217 ----------------------------------------------------------------------
2218 Copyright information:
2220 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2222 Permission is granted to anyone to make or distribute verbatim copies
2223 of this document as received, in any medium, provided that the
2224 copyright notice and this permission notice are preserved,
2225 thus giving the recipient permission to redistribute in turn.
2227 Permission is granted to distribute modified versions
2228 of this document, or of portions of it,
2229 under the above conditions, provided also that they
2230 carry prominent notices stating who last changed them.
2233 version-control: never
projects / thirdparty / glibc.git / blob