1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2012 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 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
13 9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
14 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
15 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
16 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
17 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298, 14303,
18 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417,
19 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519,
20 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576,
21 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648,
22 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743,
23 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805,
24 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835,
25 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872, 14879,
26 14889, 14893, 14898, 14914.
28 * Optimization of memcpy for MIPS.
30 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
31 EMFILE has been fixed (Bugzilla #14889).
33 * The add-on ports collection is now distributed in the "ports" subdirectory
34 of the main GNU C Library distribution, rather than separately.
36 * Port to ARM AArch64 contributed by Linaro.
38 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
39 Optimized versions of memcpy, memset, and memcmp added for System z10 and
41 Implemented by Andreas Krebbel.
43 * The new function secure_getenv allows secure access to the environment,
44 returning NULL if running in a SUID/SGID process. This function replaces
45 the internal function __secure_getenv.
47 * SystemTap static probes have been added into the dynamic linker.
48 Implemented by Gary Benson.
50 * Optimizations of string functions strstr, strcasestr and memmem.
51 Implemented by Maxim Kuvyrkov.
53 * The minimum Linux kernel version that this version of the GNU C Library
54 can be used with is 2.6.16.
56 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
57 powerpc POWER7. Implemented by Will Schmidt.
59 * New configure option --disable-nscd builds the C library such that it
60 never attempts to contact the Name Service Caching Daemon (nscd).
61 New configure option --disable-build-nscd avoids building nscd itself;
62 this is the default if --disable-nscd is used.
64 * Improved support for cross-compilation, including cross-testing and
65 bootstrap builds without a previously built glibc.
67 * Several testsuite tests are now able to test multiple IFUNC variants of an
68 interface, rather than just testing the one that would be chooen by
71 * New configure options --with-bugurl and --with-pkgversion, for
72 distributors to use to embed their bug-reporting and package version
73 information in --help and --version output.
75 * The ttyname and ttyname_r functions on Linux now fall back to searching for
76 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
77 allows creation of chroots without the procfs mounted on /proc.
79 * The `crypt' function now fails if passed salt bytes that violate the
80 specification for those values. On Linux, the `crypt' function will
81 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
82 enabled, and fail on encrypted strings using the MD5 or DES algorithm
83 when the mode is enabled.
85 * The `clock_*' suite of functions (declared in <time.h>) is now available
86 directly in the main C library. Previously it was necessary to link with
87 -lrt to use these functions. This change has the effect that a
88 single-threaded program that uses a function such as `clock_gettime' (and
89 is not linked with -lrt) will no longer implicitly load the pthreads
90 library at runtime and so will not suffer the overheads associated with
91 multi-thread support in other code such as the C++ runtime library.
93 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
98 * The following bugs are resolved with this release:
100 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
101 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
102 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
103 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
104 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
105 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
106 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
107 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
108 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
109 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
110 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
111 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
112 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
113 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
114 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
115 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
116 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
117 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
118 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
119 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
120 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
121 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
124 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
125 configuring glibc with:
126 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
127 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
128 Implemented by H.J. Lu.
132 + define static_assert
134 + do not declare gets
136 + declare at_quick_exit and quick_exit also for ISO C11
138 + aligned_alloc. NB: The code is deliberately allows the size parameter
139 to not be a multiple of the alignment. This is a moronic requirement
140 in the standard but it is only a requirement on the caller, not the
145 + uchar.h support added
147 + CMPLX, CMPLXF, CMPLXL added
149 Implemented by Ulrich Drepper.
151 * Support for the IA-64 has been moved to ports.
153 * Remove support for anything but ELF binary format
155 * Checking versions of poll, ppoll added.
156 Implemented by Ulrich Drepper.
158 * More generic and 64-bit performance optimizations to math functions.
159 Implemented by Ulrich Drepper.
161 * New configure option --enable-obsolete-rpc makes the deprecated RPC
162 headers and functions available at compile time as they were before
163 version 2.14. This option will be removed at some time in the future
164 after the TI-RPC library becomes fully sufficient for the needs of
165 existing applications.
167 * Compatibility code for Linux kernel versions before 2.4 has been removed.
168 Note that glibc is not expected to work with any Linux kernel version
171 * New header <sys/auxv.h> and function getauxval allowing easy access to
172 the AT_* key-value pairs passed from the Linux kernel. The header also
173 defines the HWCAP_* bits associated with the AT_HWCAP key.
175 * New locales: mag_IN
177 * New configure option --enable-systemtap builds SystemTap static probes
178 into libc for setjmp and longjmp and into libpthread for various operations.
179 So far the setjmp/longjmp probes and some of the libpthread probes are
180 provided only for i*86 and x86_64.
181 Implemented by Roland McGrath and Rayson Ho.
183 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
185 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
188 * More optimized functions for SPARC. Implemented by David S. Miller.
190 * Improved support for cross-compilation, especially bootstrap builds
191 without a previously built glibc.
193 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
194 Chris Metcalf from Tilera.
196 * Support for the old ARM ABI has been removed from ports. Only the EABI is
197 now supported for ARM processors.
199 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
200 as the name of the dynamic linker, to distinguish it from the
201 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
203 * Support for CRIS has been removed from ports.
205 * A new class of installed header has been documented for low-level
206 platform-specific functionality. PowerPC added the first instance with a
207 function to provide time base register access. Contributed by Tulio
208 Magno Quites Machado Filho.
210 * ix86 configurations now install header files that are consistent with
211 what x86-64 configurations install. These same header files can be used
212 for -m32, -m64, or -mx32 builds.
213 Contributed by H.J. Lu.
215 * Math library bug fixes. A thorough audit of all open math library bugs was
216 conducted by Joseph Myers. Significant progress was made on many math
217 library bugs resulting in more accurate exceptions and function results.
218 Many thanks to all those that contributed including Andreas Jaeger for his
219 patch review and work on the x87 trigonometric instruction issues.
221 * Timezone data is no longer installed. Timezone-related binaries and scripts
222 will continue to be installed. Users should obtain their timezone data from
223 their distribution provider or from the tzdata package at
224 <ftp://munnari.oz.au/pub/>.
228 * The following bugs are resolved with this release:
230 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
231 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
232 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
233 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
234 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
235 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
236 13484, 13506, 13515, 13523, 13524, 13538, 13540
238 * New program pldd to list loaded object of a process
239 Implemented by Ulrich Drepper.
241 * Add nss_db support back to glibc. No more dependency on Berkeley db
242 and support for initgroups lookups.
243 Implemented by Ulrich Drepper.
245 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
246 Contributed by HJ Lu.
248 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
249 Contributed by HJ Lu.
251 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
252 on x86-32 and x86-64.
253 Contributed by Liubov Dmitrieva.
255 * Optimized strchr and strrchr for SSE on x86-32.
256 Contributed by Liubov Dmitrieva.
258 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
259 for x86-64 and x86-32.
260 Contributed by Liubov Dmitrieva.
262 * New interfaces: scandirat, scandirat64
263 Implemented by Ulrich Drepper.
265 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
266 Implemented by Ulrich Drepper.
268 * nscd now also caches the netgroup database.
269 Implemented by Ulrich Drepper.
271 * Integrate libm with gcc's -ffinite-math-only option.
272 Implemented by Ulrich Drepper.
274 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
275 to math functions. Implemented by Ulrich Drepper.
277 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
278 Implemented by Ulrich Drepper.
280 * New Linux interfaces: process_vm_readv, process_vm_writev
282 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
283 Implemented by Ulrich Drepper.
285 * Optimized nearbyint and strcasecmp for PPC.
286 Implemented by Adhemerval Zanella.
288 * New locales: bho_IN, unm_US, es_CU, ta_LK
292 * The following bugs are resolved with this release:
294 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
295 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
296 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
297 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
298 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
299 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
300 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
301 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
302 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
303 12795, 12811, 12813, 12814, 12841
305 * The RPC implementation in libc is obsoleted. Old programs keep working
306 but new programs cannot be linked with the routines in libc anymore.
307 Programs in need of RPC functionality must be linked against TI-RPC.
308 The TI-RPC implementation is IPv6 enabled and there are other benefits.
310 Visible changes of this change include (obviously) the inability to link
311 programs using RPC functions without referencing the TI-RPC library and the
312 removal of the RPC headers from the glibc headers.
313 Implemented by Ulrich Drepper.
315 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
316 syncfs, setns, sendmmsg
318 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
319 yue_HK, lij_IT, mhr_RU
321 * New encodings: CP770, CP771, CP772, CP773, CP774
323 * New program sotruss to trace calls through PLTs
324 Implemented by Ulrich Drepper.
326 * The malloc hook implementation is marked deprecated and will be removed
327 from the default implementation in the next version. The design never
328 worked ever since the introduction of threads. Even programs which do
329 not create threads themselves can use multiple threads created internally.
333 * The following bugs are resolved with this release:
335 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
336 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
337 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
338 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
341 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
343 * POWER7 optimizations: memset, memcmp, strncmp
345 * New optimized string functions for x86-64: strnlen (SSE2),
346 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
347 Implemented by Ulrich Drepper.
351 * The following bugs are resolved with this release:
353 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
354 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
355 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
356 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
357 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
358 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
359 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
360 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
362 * New interfaces: pthread_getname_np, pthread_setname_np
364 * New Linux interface: recvmmsg
366 * STT_GNU_IFUNC implemented for Sparc by David Miller.
368 * The dynamic linker now recognizes supported ABI versions from the
369 EI_ABIVERSION field in the ELF header.
370 Implemented by Ulrich Drepper.
372 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
373 will not be used to fill in password fields in the passwd.byname replies.
374 Instead it is used to synthesize the shadow.byname table, should it be
375 missing. This is a useful mode in some installations involving Solaris.
376 Implemented by Ulrich Drepper.
378 * New locales: kok_IN, sq_MK, cv_RU
382 * The following bugs are resolved with this release:
384 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
385 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
386 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
387 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
388 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
389 10789, 10817, 10823, 10840, 10847
391 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
393 Implemented by Ulrich Drepper.
395 * Checking version of longjmp added that fails if an uninitialized stack
396 frame would be created. Implemented by Ulrich Drepper.
398 * STT_GNU_IFUNC is now supported in static executables.
399 Implemented by H.J. Lu.
401 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
403 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
404 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
405 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
406 Contributed by H.J. Lu.
408 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
409 Implemented by Ulrich Drepper.
411 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
413 Contributed by H.J. Lu.
415 * Support for fma instruction in AVX on x86-64.
416 Implemented by H.J. Lu and Ulrich Drepper.
418 * AVX support in x86-64 auditing support in ld.so.
419 Implemented by H.J. Lu.
421 * STB_GNU_UNIQUE support added.
422 Implemented by Ulrich Drepper.
424 * Implement second fallback mode for optimized DNS lookup for even more
425 broken environments. If two requests from the same port are not
426 handled correctly close the socket and open a new one before sending
427 the second request. The 'single-request-reopen' option in /etc/resolv.conf
428 can be used to select this mode right away, instead of rediscovering the
429 necessity is every process again.
430 Implemented by Ulrich Drepper.
432 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
433 Implemented by Adam Tkac.
435 * Optimized iconv conversions for S390x.
436 Implemented by Andreas Krebbel.
438 * Using condvars with PI mutexes is now more efficient due to kernel
439 support for requeueing to PI futexes. NPTL support added for x86-64.
440 Implemented by Ulrich Drepper.
442 * New locales: ps_AF, my_MM
446 * The following bugs are resolved with this release:
448 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
449 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
450 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
451 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
452 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
454 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
455 Implemented by Ulrich Drepper.
457 * New Linux interfaces: accept4, fallocate, fallocate64.
458 Implemented by Ulrich Drepper.
460 * Correct declarations of string function when used in C++ code. This
461 could lead to compile errors for invalid C++ code.
463 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
466 * New POSIX 2008 interface: psiginfo
467 Implemented by Ulrich Drepper.
469 * New ISO C++1x interfaces: quick_exit, at_quick_exit
470 Implemented by Ulrich Drepper.
472 * Support for selecting between multiple function definitions at runtime
473 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
475 * The libcrypt library can now use the hash function implementations in
476 NSS. Implemented by Ulrich Drepper.
478 * The malloc implementation can be compiled to be less memory efficient
479 but higher performing in multi-threaded programs.
480 Implemented by Ulrich Drepper.
482 * New locales: nan_TW@latin, ks_IN
484 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
485 Implemented by Ulrich Drepper.
487 * Extended printf hook support. It is possible to use user-defined types
488 and extend existing format specifiers.
489 Implemented by Ulrich Drepper.
491 * Handling for group shadow files has been added.
492 Implemented by Ulrich Drepper.
494 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
495 servers (the case, e.g., for some people using the built-in DNS
496 server in ADSL modems/routers). There is a once-per-process timeout
497 in case of a broken server. To avoid it, users can run nscd or put
498 'options single-request' in /etc/resolv.conf.
499 Implemented by Ulrich Drepper.
503 * The following bugs are resolved with this release:
505 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
506 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
507 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
508 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
509 6968, 6974, 6980, 6995, 7008, 7009, 7029
511 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
512 up at the same time. Implemented by Ulrich Drepper.
514 * TLS descriptors for LD and GD on x86 and x86-64.
515 Implemented by Alexandre Oliva.
517 * getaddrinfo now handles DCCP and UDPlite.
518 Implemented by Ulrich Drepper.
520 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
521 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
522 Implemented by Ulrich Drepper.
524 * New implementation of memmem, strstr, and strcasestr which is O(n).
525 Implemented by Eric Blake.
527 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
529 * Implement "e" option for popen to open file descriptor with the
530 close-on-exec flag set. Implemented by Ulrich Drepper.
532 * Implement "b" mode for fmemopen. In this mode writes writes don't
533 implicitly add a NUL byte and seeks from the end of the buffer really
534 use the buffer end, not the string length as the basis.
535 Implemented by Ulrich Drepper.
537 * Many functions, exported and internal, now atomically set the close-on-exec
538 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
540 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
542 Implemented by Pravin Satpute.
544 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
548 * The following bugs are resolved with this release:
550 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
551 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
552 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
553 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
554 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
555 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
556 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
558 * New locales: bo_CN, bo_IN, shs_CA.
560 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
562 * Sorting rules for some Indian languages (Devanagari and Gujarati).
563 Implemented by Pravin Satpute.
565 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
567 * nscd caches now all timeouts for DNS entries
568 Implemented by Ulrich Drepper.
570 * nscd is more efficient and wakes up less often.
571 Implemented by Ulrich Drepper.
573 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
574 vdprintf, and obstack_vprintf.
575 Implemented by Jakub Jelinek.
577 * Faster memset for x86-64.
578 Implemented by Harsha Jagasia and H.J. Lu.
580 * Faster memcpy on x86.
581 Implemented by Ulrich Drepper.
583 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
584 Implemented by Ulrich Drepper.
586 * Faster sqrt and sqrtf implemention for some PPC variants.
587 Implemented by Steven Munroe.
591 * The following bugs are resolved with this release:
593 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
594 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
595 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
596 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
597 5071, 5103, 5104, 5112, 5113, 5184, 5186
599 * More checking functions: fread, fread_unlocked, open*, mq_open.
600 Implemented by Jakub Jelinek and Ulrich Drepper.
602 * Extend fortification to C++. Implemented by Jakub Jelinek.
604 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
605 by not recognizing 'a' as a modifier when those specs are requested.
606 Implemented by Jakub Jelinek.
608 * PPC optimizations to math and string functions.
609 Implemented by Steven Munroe.
611 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
612 options to be passed. Implemented by Ulrich Drepper.
614 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
616 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
617 Implemented by Ulrich Drepper.
619 * Handle private futexes in the NPTL implementation.
620 Implemented by Jakub Jelinek and Ulrich Drepper.
622 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
623 Implemented by Roland McGrath and Ulrich Drepper.
625 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
627 * SHA-256 and SHA-512 based password encryption.
628 Implemented by Ulrich Drepper.
630 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
631 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
634 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
635 Implemented by Ulrich Drepper.
639 * The following bugs are resolved with this release:
641 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
642 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
643 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
644 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
645 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
646 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
647 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
650 * New Linux interfaces: epoll_pwait, sched_getcpu.
652 * New generic interfaces: strerror_l.
654 * nscd can now cache the services database. Implemented by Ulrich Drepper.
658 * The following bugs are resolved with this release:
660 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
661 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
662 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
663 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
664 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
665 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
666 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
667 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
668 3225, 3251, 3252, 3253, 3273
670 * For Linux, the sorting of addresses returned by getaddrinfo now also
671 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
672 Implemented by Ulrich Drepper.
674 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
675 Implemented by Ulrich Drepper.
677 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
679 * New iconv module for MIK. Contributed by Alexander Shopov.
681 * For sites with broken group and/or passwd database, the auto-propagate
682 option of nscd can prevent creating ID lookup entries from the results
683 of a name lookup and vice versa. This usually is no problem but some
684 site might have problems with the default behavior.
685 Implemented by Ulrich Drepper.
687 * Iterating over entire database in NIS can be slow. With the
688 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
689 to trade time for memory. The entire database will be read at once.
690 Implemented by Ulrich Drepper.
692 * The interfaces introduced in RFC 3542 have been implemented by
695 * Support for the new ELF hash table format was added by Ulrich Drepper.
697 * Support for priority inheritance mutexes added by Jakub Jelinek and
700 * Support for priority protected mutexes added by Jakub Jelinek.
702 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
703 or_IN, csb_PL, fy_NL, sr_ME.
707 * More overflow detection functions.
709 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
710 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
712 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
713 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
714 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
715 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
716 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
717 by Masahide Washizawa.
719 * It is now possible to install audit libraries for the dynamic linker using
720 LD_AUDIT. Implemented by Ulrich Drepper.
722 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
723 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
724 For a libc and libpthread that works well on Linux 2.4 kernels, we
725 recommend using the stable 2.3 branch.
727 * The new function open_wmemstream acts like open_memstream,
728 but uses a wchar_t wide character buffer.
730 * The new function ppoll is an improved version of poll, similar to pselect.
732 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
733 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
734 renameat, unlinkat, linkat, symlinkat, readlinkat.
736 * New Linux kernel system calls: unshare,
737 inotify_init, inotify_add_watch, inotify_rm_watch.
739 * The euidaccess function is now also known by the alias eaccess,
740 for compatibility with some other systems.
742 * Timezone data updated to 2006b version.
746 * The following bugs are resolved with this release:
748 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
749 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
750 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
751 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
752 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
753 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
755 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
757 * As of this release, GCC 4 can be used to compile the C Library.
759 * Timezone data updated to 2005m version.
763 * The following bugs are resolved with this release:
765 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
766 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
767 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
768 777, 787, 821, 822, 823, 825
770 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
774 * Support for RFC 3678. Real implementations exist only for Linux so far.
775 Implemented by Ulrich Drepper.
777 * nscd can now cache entries persistently. Expiring entries are reloaded.
778 For speedups the cache can be shared in memory with client processes.
779 Implemented by Ulrich Drepper.
781 * nscd can now perform SELinux checks.
782 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
784 * getaddrinfo queries are now cached. Canonical name lookup is performed
786 Implemented by Ulrich Drepper.
788 * The nothrow function attribute is used when headers are used by gcc when
789 compiling C code. This can avoid significant amounts of exception
792 * The malloc functions perform more error checking and are stricter when
793 it comes to reacting on errors. The default action is to terminate
794 the process after showing an error message. Implemented by Ulrich Drepper.
796 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
797 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
799 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
800 namespaces using the new function dlmopen(). This feature is of course,
801 like most other dynamic loading functionality, not available in statically
802 linked applications. Implemented by Ulrich Drepper.
804 * Low-overhead boundary checking variants of string and some stdio functions
805 were added. These are to be used in conjunction with a gcc patch by
806 Jakub Jelinek which adds calls to these functions if possible.
807 Implemented by Jakub Jelinek and Ulrich Drepper.
809 * Old code for several operating systems and machine architectures that
810 have not been in working condition in a long time have been removed from
811 the main source tree maintained by the GNU C Library's maintainers.
812 These files are now reside in the separate `ports' source module
813 that is usable as an add-on when building the library.
817 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
818 interrogate the dynamic linker, compatible with the Solaris interface.
820 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
821 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
823 * getifaddrs now uses the netlink interface on Linux to get its information.
824 Implemented by Thorsten Kukuk.
826 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
827 Implemented by Ulrich Drepper.
829 * support for non-executable stacks on x86 has been added. Changes mostly
832 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
835 * getaddrinfo now performs destination address selection according to
840 * Thread-safe interfaces for many functions that access locale data
841 were added in version 2.3, but these features were omitted from NEWS.
842 Many functions have variants with an `_l' suffix that take a `locale_t'
843 object as a parameter rather than consulting the current locale.
844 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
845 create and maintain `locale_t' objects. Additionally, the new function
846 `uselocale' sets "the current locale" (as used by functions not so
847 parameterized) set for an individual thread. These features were added
848 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
850 * The functions getresuid, getresgid, setresuid, and setresgid, which
851 have long been available on Linux, are now declared in <unistd.h>
852 and are now also available on the Hurd.
854 * ELF thread-local storage support (TLS) now works on x86-64.
856 * The new dynamic string token $LIB is expanded in shared library names.
857 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
859 * Aldy Hernandez contributed complete software floating point support for
860 PowerPC machines with no FPU.
862 * fexecve is implemented on Linux.
864 * The `btowc' function should work at least twice as fast due to
865 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
867 * With approriate thread add-ons cancelable functions are now implemented
868 in libc.so as well. No need to call the function in libpthread. This
869 change allowed to finally disable the incorrect and expensive handling
870 of weak definition in ld.so.
872 * Yet more PLT entries in libc.so have been removed. We finally arrived
873 at the bare minimum. Startup times improved appropriately.
875 * Support for the new Linux/x86 system call interface was added. The
876 AT_SYSINFO auxiliary vector entry is recognized and handled.
880 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
883 * iconv (the program and the interface) now accepts empty names (excluding
884 options like //TRANSLIT) to mean "use charset of current locale".
886 * localedef can now transliterate characters in strings which are not in
887 the provided charmap. The information from the input locale is used.
889 * Prelinking support was added for ELF targets. This requires additional
890 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
892 * Read-only stdio streams now use mmap to speed up operation by eliminating
893 copying and buffer underflows. To use add 'm' to the mode string of
894 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
896 * The malloc functions were completely rewritten by Wolfram Gloger based
897 on Doug Lea's malloc-2.7.0.c.
899 * Isamu Hasegawa contributed a completely new and POSIX-conformant
900 implementation of regex.
902 * Bruno Haible upgraded the iconv and locale implementation to support
905 * Contents of the LC_* and LANG environment variables in the CEN style are
906 not recognized anymore. It never was used. Change by Ulrich Drepper.
908 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
909 thread-local storage (TLS) ABI on some platforms.
910 Changes by Ulrich Drepper. SH support by Kaz Kojima.
912 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
913 EUC-JISX0213, and TSCII.
915 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
916 BSD-compatible interface for getting all network interface addresses.
917 Implementation for IPv4 by Roland McGrath.
919 * Loading of locale data is faster due to the introduction of a locale
920 archive. Implemented by Roland McGrath and Ulrich Drepper.
922 * Startup times are significantly reduced by not using exported functions
923 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
926 * Steven Munroe contributed a port to PowerPC64/Linux.
930 * The Hurd now uses the GNU libio implementation of stdio rather than the
931 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
933 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
934 with the same behavior as the Linux system call of the same name.
938 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
939 128-bit long double format.
941 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
942 IBM1161, and IBM1162 charsets.
944 * Andreas Jaeger contributed a port to x86-64/Linux.
946 * Peter Bruin contributed a port to PowerPC/Hurd.
948 * libc functions using I/O streams now can handle wide-oriented streams
951 * optimizations in the dynamic linker. Binaries created by recent binutils
952 versions start up quicker due to reduced time spent on relocations.
954 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
958 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
959 asinh, atanh, j0 for the 128-bit long double format.
961 * Bruno Haible updated all the code handling Unicode in some form to
964 * Speed of regex for single-byte locales is back to previous levels.
965 Patch by Isamu Hasegawa.
967 * Alpha, SPARC, and IA-64 now also using floating stacks.
969 * Startup time of internationalized applications greatly improved through
970 iconv cache. Use iconvconfig to generate the cache file.
971 Contributed by Ulrich Drepper.
973 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
974 severe performance problems. Patch by David Mosberger.
976 * The Hurd port got a lot more functionality like AIO, various stdio
977 extensions, etc. Mainly done by Roland McGrath.
979 * mtrace can now lookup symbols in shared libraries.
983 * Intel's IA-64 math library is largely integrated. It provides fast and
984 accurate implementatations for most basic and standard math functions
985 in float, double, and long double format.
987 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
988 and asin for the 96-bit long double format and asin, log, tan for the
989 128-bit long double format.
991 * The beginning of a last-bit accurate math library by IBM Haifa were added.
992 The basic double functions exist today. Contributed by Abraham Ziv
993 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
994 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
996 * An asynchronous name lookup library was added. The interface is designed
997 after POSIX AIO. The proposal was circulated beforehand to get comments.
998 No negative ones came in. Implemented by Ulrich Drepper.
1000 * Port to S390/64bit contributed by Martin Schwidefsky
1001 <schwidefsky@de.ibm.com>.
1003 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1004 of functions for Linux/IA-64.
1006 * The RPC code is now thread safe. Threads can now use the same service
1007 of different services at the same time. Patch by Eric Norum
1008 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1010 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1011 family of functions for Linux/S390.
1013 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1014 of functions for Linux/x86.
1016 * Port to Linux/CRIS contributed by Axis Communications.
1020 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1021 we can now check for namespace violations and missing declarations. The
1022 result is that almost all headers are now Unix-compliant (as defined in
1023 the upcoming XPG6). The negative side is that some programs might need
1024 corrections, too, if they depend on the incorrect form of the headers in
1025 previous versions which defined too many symbols and included too many
1028 * regex now handles multibyte character sets correctly.
1029 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1031 * iconv (the program) does now conform to the upcoming XPG6 and handles
1032 charmaps. Instead of the charset names the path of charmaps can be
1033 provided and the conversion happens based on this data.
1034 Contributed by Ulrich Drepper.
1036 * The locale program now provides detailed information about the installed
1041 only lists the names of the supported locales
1045 provides details such as country, language, and codeset name.
1046 Contributed by Ulrich Drepper.
1050 * The gencat program now parses the input file according to the charset
1051 selected by the LC_CTYPE category. This is important for stateful
1052 character sets. To make generating catalogs easier there is a way
1053 to overwrite the charset selected by the locale: before the first
1054 message or $ quote line the catalog can contain a line like
1056 $ codeset=ISO-8859-2
1058 to select the charset (ISO-8859-2 in this case).
1060 Implemented by Shinya Hanataka and Ulrich Drepper.
1062 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1063 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1064 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1066 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1067 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1069 * The LANGUAGE environment variable is now ignored unless the locale is
1070 changed from the default "C" locale.
1072 * The usual bug fixes.
1076 * Greg McGary added runtime support for bounds checking using gcc's
1077 new -fbounded-pointers option. ix86 target is complete. PowerPC
1080 * Thorsten Kukuk added secure mode support to nscd.
1082 * The Berkeley db libraries have been removed.
1084 Related, the nss_db module is now in a separate package since it
1085 obviously requires a database library being available.
1087 * Wide character I/O streams implemented by Ulrich Drepper.
1089 * Functions from the extended socket API added by Ulrich Drepper.
1091 * Functions feenableexcept and fedisableexcept to control the
1092 behaviour of individual exceptions have been added by Andreas Jaeger.
1094 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1096 * The resolver code has been updated from bind 8.2.3-T5B which supports
1097 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1100 This change could in some situations effect backward compatibility. Since
1101 now `_res' is a thread-local instead of a global variable, modifying it
1102 in one thread does not have any effect in other threads.
1104 The resolver library was also extended to allow IPv6 as the transport
1105 protocol for the requests. This work was done by Stig Venaas.
1107 * Compatibility code for K&R C compilers has been removed from the
1108 header files. A ISO C compiler is needed to use the library
1109 (conforming to either C89 or C99 standard).
1111 * Complete rewrite of the localedef program to support multibyte character
1112 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1113 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1114 Implemented by Ulrich Drepper.
1116 Bruno Haible significantly improved the generation and use of the data
1117 structures for the wide character tables.
1119 * Plural handling in gettext implemented by Ulrich Drepper.
1121 * The utmp daemon has been removed.
1123 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1125 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1128 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1130 * POSIX barriers implemented by Kaz Kylheku.
1132 * POSIX spawn function family implemented by Ulrich Drepper.
1134 * POSIX spinlocks are now available.
1136 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1138 * the configure option --enable-kernel=X.Y.Z allows to strip out
1139 compatibility for kernel versions before X.Y.Z. This is currently only
1140 implemented for Linux.
1142 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1143 field sin6_scope_id. This means that all programs using IPv6 should be
1144 recompiled. Don't expect binary compatibility with previous glibc
1147 * various conversion modules for IBM character sets contributed by
1150 * IA-64 port by Jes Sorensen and HJ Lu.
1164 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1166 * New xdr functions are added; some rpc functions are now 64bit clean.
1168 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1170 * Fixed known incompatibilities with glibc 2.0.
1172 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1174 * Optimized a number of functions (especially the ELF dynamic loader).
1176 * Update timezone data files.
1178 * lots of charmaps corrections
1180 * some new locale definitions and charmaps
1185 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1186 conform to POSIX member type requirements. Symbol versions have been
1187 adjusted as needed within the library, and for direct use by applications,
1188 but there is potential for problems if third-party libraries use
1189 struct timeval as part of their interface. This does not present
1190 a problem for X and other "essential" system libraries.
1192 * An additional locale model to support C++ Standard Library locale
1193 model and probably more was implemented by Ulrich Drepper.
1195 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1198 * Miles Bader provided the `argp' function family to support hierachical
1199 command line argument parsing, layered on top of getopt.
1201 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1203 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1206 * scanf recognizes the %a and %A format for scanning floating point numbers.
1208 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1209 information and interfaces for the available integer types.
1211 * about 130 new math functions were added to implement the ISO C9x math
1214 * the new header <complex.h> contains definitions of the complex math
1215 functions from ISO C 9X.
1217 * the new header <tgmath.h> defines generic macros to use complex or
1218 real valued functions.
1220 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1222 * Andreas Jaeger provided a test suite for the math library.
1224 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1226 * Ulrich Drepper added character set conversion functions (iconv).
1228 * Optimized string functions have been added.
1230 * The localedata addon is now part of glibc.
1232 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1234 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1235 daemon for NSS (nscd).
1237 Missing a better place here are some numbers on improvements. Under
1238 Linux 2.1.125 un-tar-ing the kernel sources takes
1242 using local files 12.19s 6.88s 22.91s
1244 using NIS 13.92s 8.91s 26.34s
1246 using NIS & nscd 10.37s 7.34s 25.30s
1248 using NIS+ 27.57s 30.37s 640.46s
1250 using NIS+ & nscd 10.25s 7.83s 26.51s
1252 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1254 Keep in mind that non-namelookup related operations dominate above times.
1255 It was just a common complain that using NIS+ unpacking the kernel is
1258 [1] The old nscd implementation is not available anymore since it was
1259 distributed with glibc up to version 2.0.98 and thus is now replaced.
1261 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1263 * Mark Kettenis provided a Hesiod NSS module.
1265 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1266 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1268 * rcmd can now handle netgroups (Dick Streefland).
1270 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1273 * Support for the IPv6 protocol has been added to the socket API, as per the
1274 latest draft standards.
1276 * Support for Linux 2.2 has been added.
1278 * Interface changes relative to the latest 2.0.x release:
1279 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1280 addseverity NEW: Unix98
1281 alphasort64 NEW: LFS
1282 argp_err_exit_status NEW: argp, GNU ext
1283 argp_error NEW: argp, GNU ext
1284 argp_failure NEW: argp, GNU ext
1285 argp_help NEW: argp, GNU ext
1286 argp_parse NEW: argp, GNU ext
1287 argp_program_bug_address NEW: argp, GNU ext
1288 argp_program_version NEW: argp, GNU ext
1289 argp_program_version_hook NEW: argp, GNU ext
1290 argp_state_help NEW: argp, GNU ext
1291 argp_usage NEW: argp, GNU ext
1292 authdes_create NEW: Secure RPC
1293 authdes_getucred NEW: Secure RPC
1294 authdes_pk_create NEW: Secure RPC
1295 backtrace NEW: GNU ext.
1296 backtrace_symbols NEW: GNU ext.
1297 backtrace_symbols_fd NEW: GNU ext.
1299 cacosf NEW: ISO C 9x
1300 cacosh NEW: ISO C 9x
1301 cacoshf NEW: ISO C 9x
1302 cacoshl NEW: ISO C 9x
1303 cacosl NEW: ISO C 9x
1310 casinf NEW: ISO C 9x
1311 casinh NEW: ISO C 9x
1312 casinhf NEW: ISO C 9x
1313 casinhl NEW: ISO C 9x
1314 casinl NEW: ISO C 9x
1316 catanf NEW: ISO C 9x
1317 catanh NEW: ISO C 9x
1318 catanhf NEW: ISO C 9x
1319 catanhl NEW: ISO C 9x
1320 catanl NEW: ISO C 9x
1321 cbc_crypt NEW: Secure RPC
1325 ccoshf NEW: ISO C 9x
1326 ccoshl NEW: ISO C 9x
1332 cimagf NEW: ISO C 9x
1333 cimagl NEW: ISO C 9x
1334 clearerr_locked REMOVED
1335 clntunix_create NEW: sunrpc ext
1337 clog10 NEW: ISO C 9x
1338 clog10f NEW: ISO C 9x
1339 clog10l NEW: ISO C 9x
1349 cprojf NEW: ISO C 9x
1350 cprojl NEW: ISO C 9x
1352 crealf NEW: ISO C 9x
1353 creall NEW: ISO C 9x
1358 csinhf NEW: ISO C 9x
1359 csinhl NEW: ISO C 9x
1362 csqrtf NEW: ISO C 9x
1363 csqrtl NEW: ISO C 9x
1367 ctanhf NEW: ISO C 9x
1368 ctanhl NEW: ISO C 9x
1370 des_setparity NEW: Secure RPC
1371 ecb_crypt NEW: Secure RPC
1372 endutxent NEW: Unix98
1374 exp10f NEW: ISO C 9x
1375 exp10l NEW: ISO C 9x
1379 fattach NEW: STREAMS
1380 fdetach NEW: STREAMS
1384 feclearexcept NEW: ISO C 9x
1385 fegetenv NEW: ISO C 9x
1386 fegetexceptflag NEW: ISO C 9x
1387 fegetround NEW: ISO C 9x
1388 feholdexcept NEW: ISO C 9x
1390 feraiseexcept NEW: ISO C 9x
1391 ferror_locked REMOVED
1392 fesetenv NEW: ISO C 9x
1393 fesetexceptflag NEW: ISO C 9x
1394 fesetround NEW: ISO C 9x
1395 fetestexcept NEW: ISO C 9x
1396 feupdateenv NEW: ISO C 9x
1397 fflush_locked REMOVED
1401 fgets_unlocked NEW: GNU ext.
1402 fileno_locked REMOVED
1414 fputc_locked REMOVED
1415 fputs_unlocked NEW: GNU ext.
1416 fread_unlocked NEW: GNU ext.
1421 fstatvfs NEW: Unix98
1425 ftruncate64 NEW: LFS
1427 fwrite_unlocked NEW: GNU ext.
1428 gai_strerror NEW: IPv6
1432 getchar_locked REMOVED
1434 getdate_err NEW: Unix98
1435 getdate_r NEW: GNU ext.
1437 getnameinfo NEW: IPv6
1438 getnetname NEW: Secure RPC
1439 getpmsg NEW: STREAMS
1440 getpt NEW: Unix98 PTY
1441 getrlimit64 NEW: LFS
1442 getutxent NEW: Unix98
1443 getutxid NEW: Unix98
1444 getutxline NEW: Unix98
1445 glob64 NEW: GNU ext.
1446 globfree64 NEW: GNU ext.
1447 gnu_get_libc_release NEW: GNU ext.
1448 gnu_get_libc_version NEW: GNU ext.
1449 grantpt NEW: Unix98 PTY
1450 host2netname NEW: Secure RPC
1452 iconv_close NEW: iconv
1453 iconv_open NEW: iconv
1454 if_freenameindex NEW: IPv6
1455 if_indextoname NEW: IPv6
1456 if_nameindex NEW: IPv6
1457 if_nametoindex NEW: IPv6
1458 in6addr_any NEW: IPv6
1459 in6addr_loopback NEW: IPv6
1460 inet6_isipv4mapped NEW: IPv6
1461 isastream NEW: STREAMS
1462 iswblank NEW: GNU ext.
1463 key_decryptsession NEW: Secure RPC
1464 key_decryptsession_pk NEW: Secure RPC
1465 key_encryptsession NEW: Secure RPC
1466 key_encryptsession_pk NEW: Secure RPC
1467 key_gendes NEW: Secure RPC
1468 key_get_conv NEW: Secure RPC
1469 key_secretkey_is_set NEW: Secure RPC
1470 key_setnet NEW: Secure RPC
1471 key_setsecret NEW: Secure RPC
1472 llrint NEW: ISO C 9x
1473 llrintf NEW: ISO C 9x
1474 llrintl NEW: ISO C 9x
1475 llround NEW: ISO C 9x
1476 llroundf NEW: ISO C 9x
1477 llroundl NEW: ISO C 9x
1482 lrintf NEW: ISO C 9x
1483 lrintl NEW: ISO C 9x
1484 lround NEW: ISO C 9x
1485 lroundf NEW: ISO C 9x
1486 lroundl NEW: ISO C 9x
1488 makecontext NEW: Unix98
1489 mempcpy NEW: GNU ext.
1492 modify_ldt NEW: kernel
1496 nearbyint NEW: ISO C 9x
1497 nearbyintf NEW: ISO C 9x
1498 nearbyintl NEW: ISO C 9x
1499 netname2host NEW: Secure RPC
1500 netname2user NEW: Secure RPC
1501 nexttoward NEW: ISO C 9x
1502 nexttowardf NEW: ISO C 9x
1503 nexttowardl NEW: ISO C 9x
1507 passwd2des NEW: Secure RPC
1509 pow10f NEW: GNU ext.
1510 pow10l NEW: GNU ext.
1513 printf_size NEW: GNU ext.
1514 printf_size_info NEW: GNU ext.
1515 profil_counter REMOVED
1516 pthread_mutexattr_getkind_np REPLACED
1517 pthread_mutexattr_setkind_np REPLACED
1518 ptsname NEW: Unix98 PTY
1519 ptsname_r NEW: Unix98 PTY
1521 putchar_locked REMOVED
1522 putgrent NEW: GNU ext.
1524 putpmsg NEW: STREAMS
1525 pututxline NEW: Unix98
1529 readdir64_r NEW: LFS
1530 remquo NEW: ISO C 9x
1531 remquof NEW: ISO C 9x
1532 remquol NEW: ISO C 9x
1534 roundf NEW: ISO C 9x
1535 roundl NEW: ISO C 9x
1537 scalbln NEW: ISO C 9x
1538 scalblnf NEW: ISO C 9x
1539 scalblnl NEW: ISO C 9x
1541 sendfile NEW: kernel
1542 setcontext NEW: Unix98
1543 setrlimit64 NEW: LFS
1544 setutxent NEW: Unix98
1546 sigignore NEW: Unix98
1547 sigqueue NEW: POSIX.1b
1548 sigrelse NEW: Unix98
1549 sigset NEW: POSIX.1b
1550 sigtimedwait NEW: POSIX.1b
1551 sigwaitinfo NEW: POSIX.1b
1552 sincos NEW: GNU ext.
1553 sincosf NEW: GNU ext.
1554 sincosl NEW: GNU ext.
1558 strcasestr NEW: GNU ext.
1559 strtoimax NEW: ISO C 9x
1560 strtoumax NEW: ISO C 9x
1561 strverscmp NEW: GNU ext.
1562 svcauthdes_stats NEW: Secure RPC
1563 svcunix_create NEW: sunrpc etx
1564 svcunixfd_create NEW: sunrpc ext
1565 swapcontext NEW: Unix98
1566 tcgetsid NEW: Unix98 PTY
1567 tdestroy NEW: GNU ext.
1568 tgamma NEW: ISO C 9x
1569 tgammaf NEW: ISO C 9x
1570 tgammal NEW: ISO C 9x
1574 truncf NEW: ISO C 9x
1575 truncl NEW: ISO C 9x
1577 unlockpt NEW: Unix98 PTY
1578 updwtmpx NEW: Unix98
1579 user2netname NEW: Secure RPC
1580 utmpxname NEW: Unix98
1581 versionsort NEW: GNU ext.
1582 versionsort64 NEW: GNU ext.
1584 wcscasecmp NEW: GNU ext.
1585 wcsncasecmp NEW: GNU ext.
1586 wcsnlen NEW: GNU ext.
1587 wcstoimax NEW: ISO C 9x
1588 wcstoll NEW: ISO C 9x
1589 wcstoull NEW: ISO C 9x
1590 wcstoumax NEW: ISO C 9x
1592 wordexp NEW: POSIX.2
1593 wordfree NEW: POSIX.2
1594 write_profiling REMOVED
1595 xdecrypt NEW: Secure RPC
1596 xdr_authdes_cred NEW: Secure RPC
1597 xdr_authdes_verf NEW: Secure RPC
1598 xdr_cryptkeyarg NEW: Secure RPC
1599 xdr_cryptkeyarg2 NEW: Secure RPC
1600 xdr_cryptkeyres NEW: Secure RPC
1601 xdr_getcredres NEW: Secure RPC
1602 xdr_key_netstarg NEW: Secure RPC
1603 xdr_key_netstres NEW: Secure RPC
1604 xdr_keybuf NEW: Secure RPC
1605 xdr_keystatus NEW: Secure RPC
1606 xdr_netnamestr NEW: Secure RPC
1607 xdr_sizeof NEW: Secure RPC
1608 xdr_unixcred NEW: sunrpc ext
1609 xencrypt NEW: Secure RPC
1610 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1621 * inet_ntoa is thread-safe
1623 * updwtmp is moved from libutil to libc
1625 * rewrite of cbrt function
1627 * update of timezone data
1641 * add atoll function
1643 * fix complex problems in Berkeley DB code
1645 * fix math functions
1649 * fixed lots of header problems (especially Linux/GNU specific)
1651 * dynamic loader preserves all registers
1653 * Roland McGrath provided support for handling of auxiliary objects in
1654 the ELF dynamic loader.
1656 * support for parallel builds is improved
1660 * GNU extensions are no longer declared by default. To enable them you
1661 must define the macro `_GNU_SOURCE' in your program or compile with
1664 * The library has changed from using GNU ld symbol aliases to using weak
1665 symbols where available. The ELF object file format supports weak
1666 symbols; GNU ld also supports weak symbols in the a.out format. (There
1667 is also now support for other GNU ld extensions in ELF. Use the
1668 `--with-elf' option to configure to indicate you have ELF, and
1669 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1670 of many files which contained only symbol aliases, reducing the size of
1671 the source and the compiled library; many other files were renamed to
1672 less cryptic names previously occupied by the symbol alias files.
1673 There is a new header file <elf.h> for programs which operate on
1674 files in the ELF format.
1676 * Converted to Autoconf version 2, so `configure' has more options.
1677 Run `configure --help' to see the details.
1679 * The library can now be configured to build profiling, highly-optimized
1680 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1681 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1682 `configure' enable building these extra libraries. The shared library is
1683 built by default when using both ELF and GNU ld. When shared libraries
1684 are enabled, the new library `-ldl' is available for arbitrary run-time
1685 loading of shared objects; its interface is defined in <dlfcn.h>. The
1686 new header file <link.h> gives access to the internals of the run-time
1687 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1688 application of same name on other systems and it provides information
1689 about dynamically linked binaries.
1691 * The C library now provides the run-time support code for profiling
1692 executables compiled with `-pg'. Programs can control the profiling code
1693 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1694 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1695 the support for this file format was contributed by David Mosberger-Tang.
1697 * The math code has been replaced with a math library based on fdlibm from
1698 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1699 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1700 functions. The math functions now reside in a separate library, so
1701 programs using them will need to use `-lm' their linking commands.
1703 * John C. Bowman contributed optimized ix87 assembler inline functions.
1705 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1706 mechanism similar to that found in Solaris 2. This is now used for the
1707 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1708 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1709 file controls what services are used for each individual database. This
1710 works by loading shared libraries with names specified in `nsswitch.conf',
1711 so service modules can be changed or added at any time without even
1712 relinking any program. Currently there are the file, db, and NIS based
1713 NSS services available.
1715 * The new functions `strtoq' and `strtouq' parse integer values from
1716 strings, like `strtol' and `strtoul', but they return `long long int' and
1717 `unsigned long long int' values, respectively (64-bit quantities).
1719 * The new functions `strtof' and `strtold' parse floating-point values from
1720 strings, like `strtod', but they return `float' and `long double' values,
1721 respectively (on some machines `double' and `long double' are the same).
1723 * Ulrich Drepper has contributed new implementations of the floating-point
1724 printing and reading code used in the `printf' family of functions and
1725 `strtod', `strtof', and `strtold'. These new functions are perfectly
1726 accurate, and much faster than the old ones.
1728 * The implementation of the POSIX locale model was completely rewritten by
1729 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1730 to compile the POSIX locale definition.
1732 * The former dummy implementations of the strcoll and strxfrm function are
1733 now replaced by fully functional code contributed by Ulrich Drepper. The
1734 collation information comes from the POSIX locale definitions.
1736 * The new header <langinfo.h> defines an interface for accessing
1737 various locale-dependent data (using the locale chosen with `setlocale').
1739 * Ulrich Drepper has contributed a new suite of functions for operation on
1740 wide-character and multibyte-character strings, in <wchar.h>;
1741 and classification and case conversion of wide characters, in <wctype.h>.
1742 These new functions are conforming to the ISO C, Amendement 1 specification.
1744 * There is now a second implementation of the standard I/O library available.
1745 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1746 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1748 * You can now use positional parameter specifications in format strings
1749 for the `printf' and `scanf' families of functions. For example,
1750 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1751 ``Number 6, Mr Jones''. This is mainly useful when providing different
1752 format strings for different languages, whose grammars may dictate
1753 different orderings of the values being printed. To support this
1754 feature, the interface for `register_printf_handler' has changed; see
1755 the header file <printf.h> for details.
1757 * The `printf' and `scanf' families of functions now understand a new
1758 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1759 to group numbers as indicated by the locale; for `scanf' and friends, this
1760 says to accept as valid only a number with all the proper grouping
1761 separators in the right places. In the default "C" locale, numbers are
1762 not grouped; but locales for specific countries will define the usual
1763 conventions (i.e. separate thousands with `,' in the US locale).
1765 * The pgrp functions have been regularized, slightly incompatibly but much
1766 less confusingly. The core functions are now `getpgid' and `setpgid',
1767 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1768 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1769 provided for compatibility. There is no longer an incompatible `getpgrp'
1770 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1772 * The new header file <fts.h> and suite of functions simplify programs that
1773 operate on directory trees. This code comes from 4.4 BSD.
1775 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1776 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1777 NSS scheme used in glibc.
1779 * There is a new malloc debugging hook `__memalign_hook'.
1781 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1782 `unsigned int' in <sys/types.h>. These are for compatibility only and
1783 their use is discouraged.
1785 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1786 done differently, so that it works even without GNU ld.
1788 * New function `euidaccess' checks allowed access to a file like `access',
1789 but using the effective IDs instead of the real IDs.
1791 * The time zone data files have been updated for the latest and greatest
1792 local time conventions of the countries of the world.
1794 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1797 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1798 for formatting floating-point numbers. They are provided only for
1799 compatibility; new programs should use `sprintf' instead. There are
1800 also equivalent function for the `long double' floating-point type and
1801 all functions also exist in a reentrant form.
1803 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1804 functions for maintaining the login-record files (primarily of use to
1805 system programs such as `login'), and convenient functions for
1806 allocating and initializing a pseudo-terminal (pty) device.
1808 * Ulrich Drepper has contributed new support for System V style
1809 shared memory and IPC on systems that support it.
1811 * Ulrich Drepper has contributed several miscellaneous new functions found
1812 in System V: The `hsearch' family of functions provide an effective
1813 implementation of hash tables; `a64l' and `l64a' provide a very simple
1814 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1817 * Ulrich Drepper has contributed new reentrant counterparts for the
1818 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1820 * Ulrich Drepper has contributed new, highly-optimized versions of several
1821 string functions for the i486/Pentium family of processors.
1823 * Ulrich Drepper has updated the Linux-specific code, based largely
1824 on work done in Hongjiu Lu's version of GNU libc for Linux.
1825 The GNU library now supports Linux versions 2.0.10 and later,
1826 using the ELF object file format (i[3456]86-*-linux).
1828 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1830 * David Mosberger-Tang and Richard Henderson have ported the C library
1831 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1832 dynamic linking support for ELF/Alpha.
1834 * Richard Henderson contributed several Alpha optimized assembler function
1835 for arithmetic and string handling.
1837 * Ulrich Drepper has contributed a new set of message catalog functions to
1838 support multiple languages using the <libintl.h> interface, for use with
1839 his new package GNU gettext. Translation volunteers have contributed
1840 catalogs of the library's messages in Spanish, German, and Korean.
1842 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1843 program and the `catgets' function for reading the catalog files it
1844 creates. (The <libintl.h> interface is preferred; we include the
1845 <nl_types.h> interface using `catgets' only for source compatibility with
1846 programs already written to use it.)
1848 * New header file <values.h> gives SVID-compatible names for <limits.h>
1851 * Various new macros, declarations, and small header files for compatibility
1854 * New function `group_member' is a convenient way to check if a process has
1855 a given effective group ID.
1857 * When using GCC 2.7 and later, the socket functions are now declared in a
1858 special way so that passing an argument of type `struct sockaddr_in *',
1859 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1860 `struct sockaddr *' type, does not generate a type-clash warning.
1862 * New function `error' declared in header file <error.h> is a convenient
1863 function for printing error messages and optionally exiting; this is the
1864 canonical function used in GNU programs. The new functions `err', `warn',
1865 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1866 doing the same thing.
1868 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1869 POSIX.2 `glob' function to do ~ and {...} expansion.
1871 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1872 `clearenv' which is used in POSIX.9 is also available.
1874 * New function `getsid' returns session ID number on systems that support it.
1876 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1877 files <db.h> and <mpool.h> provide a rich set of functions for several
1878 types of simple databases stored in memory and in files, and <ndbm.h> is
1879 an old `ndbm'-compatible interface using the `db' functions. Link with
1880 `-ldb' to get these functions.
1882 * New macro `strdupa' copies a string like `strdup', but uses local stack
1883 space from `alloca' instead of dynamic heap space from `malloc'.
1885 * New function `strnlen' is like `strlen' but searches only a given maximum
1886 number of characters for the null terminator. `stpncpy', `strndup' and
1887 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1890 * New function `statfs' in header <sys/statfs.h>.
1892 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1893 provide convenient functions for operating on blocks of null-terminated
1896 * A new suite of functions in <utmp.h> handle all the details of reading
1897 and writing the utmp file.
1899 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1902 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1903 completely POSIX compliant and also implemented the extended functionality
1904 to handle alternate digit representation and alternate era date formats.
1906 * Ulrich Drepper provided an implementation of the `strptime' function
1907 defined in XPG4.2 which transforms a string into a `struct tm' value.
1909 * Paul Eggert provided the tzselect shell script as part of the timezone
1910 code. The shell script makes it easy to select the correct timezone
1913 * The implementation of the malloc family of functions is completely replaced
1914 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1915 The implementation uses the mmap function (if available) and it is
1916 optimized for the use in multi threaded programs.
1918 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1919 functions. This new functionality is usable by specifying a special
1920 salt string and it is compatible with implementation on *BSD systems.
1922 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1923 `getsubopt' to handle second level command line options, `bsd_signal'
1924 to access BSD style `signal' functionality, the obsolete `regexp' style
1927 * the `lchown' function is available on system which support this
1930 * The implementation of the shadow password handling function was contributed
1933 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1935 * POSIX.1g support was added. The <sys/select.h> header is available,
1936 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1937 implementation of `getaddrinfo'.
1941 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1943 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1944 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1946 * The new function `daemon' from 4.4 BSD is useful for server programs that
1947 want to put themselves in the background.
1949 * Joel Sherrill has contributed support for several standalone boards that
1950 run without an operating system.
1952 * `printf', `scanf' and friends now accept a `q' type modifier for long
1953 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1955 * All of the code taken from BSD (notably most of the math and networking
1956 routines) has been updated from the BSD 4.4-Lite release.
1958 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1960 * The new functions `getdomainname' and `setdomainname' fetch or change the
1961 YP/NIS domain name. These are system calls which exist on systems which
1964 * The time zone data files have been updated for the latest international
1967 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1968 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1972 * The C library now includes support for Sun RPC, from Sun's free
1973 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1974 are included. (There is still no support for YP.)
1976 * Tom Quinn has contributed a port of the C library to SGI machines running
1977 Irix 4 (mips-sgi-irix4).
1979 * The new `lockf' function is a simplified interface to the locking
1980 facilities of `fcntl', included for compatibility.
1982 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1984 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1986 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1989 * The error message printed by `assert' for a failed assertion now includes
1990 the name of the program (if using GNU ld) and the name of the calling
1991 function (with versions of GCC that support this).
1993 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1995 * The library now includes the <sys/mman.h> header file and memory
1996 management functions `mmap', `munmap', `mprotect', `msync', and
1997 `madvise', on systems that support those facilities.
1999 * The interface for `mcheck' has changed slightly: the function called to
2000 abort the program when an allocation inconsistency is detected now takes
2001 an argument that indicates the type of failure. The new function
2002 `mprobe' lets you request a consistency check for a particular block at
2003 any time (checks are normally done only when you call `free' or `realloc'
2006 * It is now possible to easily cross-compile the C library, building on one
2007 system a library to run on another machine and/or operating system. All
2008 you need to do is set the variable `HOST_CC' in `configparms' to the
2009 native compiler for programs to run on the machine you are building on (a
2010 few generator programs are used on Unix systems); set `CC' to the
2013 * The new function `fexecve' (only implemented on the GNU system) executes
2014 a program file given a file descriptor already open on the file.
2018 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2019 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2021 * You can set the variable `libprefix' in `configparms' to specify a prefix
2022 to be prepended to installed library files; this makes it easy to install
2023 the GNU C library to be linked as `-lgnuc' or whatever.
2025 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2026 copies a limited number of characters from a string, and returns the
2027 address of the last character written.
2029 * You no longer need to check for whether the installed `stddef.h' is
2030 compatible with the GNU C library. configure now checks for you.
2032 * You can now define a per-stream `fileno' function to convert the
2033 stream's cookie into an integral file descriptor.
2035 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2036 allocates zero bytes of storage, and returns a unique pointer which
2037 you can pass to `realloc' or `free'. The behavior is undefined if
2038 you dereference this pointer.
2040 * The C library now runs on Sony NEWS m68k machines running either
2041 NewsOS 3 or NewsOS 4.
2043 * The new `syscall' function is a system-dependent primitive function
2044 for invoking system calls. It has the canonical behavior on Unix
2045 systems, including unreliable return values for some calls (such as
2046 `pipe', `fork' and `getppid').
2048 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2049 to `EAGAIN', which is the preferred name. On systems whose kernels
2050 use two distinct codes, the C library now translates EWOULDBLOCK to
2051 EAGAIN in every system call function.
2055 * The GNU C Library Reference Manual is now distributed with the library.
2056 `make dvi' will produce a DVI file of the printed manual.
2057 `make info' will produce Info files that you can read on line using C-h i
2058 in Emacs or the `info' program.
2059 Please send comments on the manual to bug-glibc-manual@gnu.org.
2061 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2063 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2065 * Jason Merrill has contributed a port to the Sequent Symmetry running
2066 Dynix version 3 (i386-sequent-dynix).
2068 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2069 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2071 * New function `memory_warnings' lets you arrange to get warnings when
2072 malloc is running out of memory to allocate, like Emacs gives you.
2074 * The C library now contains the relocating allocator used in Emacs 19 for
2075 its editing buffers. This allocator (ralloc) minimizes allocation
2076 overhead and fragmentation by moving allocated regions around whenever it
2077 needs to. You always refer to a ralloc'd region with a "handle" (a
2078 pointer to a pointer--an object of type `void **').
2080 * There is a new `printf' format: `%m' gives you the string corresponding
2081 to the error code in `errno'.
2083 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2084 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2085 pass, the `a' modifier says to fill in a `char **' you pass with a
2088 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2089 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2090 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2092 * `mkstemp' is a traditional Unix function to atomically create and open a
2093 uniquely-named temporary file.
2097 * The standard location for the file that says what the local timezone is
2098 has changed again. It is now `/usr/local/etc/localtime' (or more
2099 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2101 * The distribution no longer contains any files with names longer than 14
2104 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2105 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2107 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2111 * The configuration process has changed quite a bit. The `configure'
2112 script is now used just like the configuration scripts for other GNU
2113 packages. The `sysdeps' directory hierarchy is much rearranged.
2114 The file `INSTALL' explains the new scheme in detail.
2116 * The header files no longer need to be processed into ANSI C and
2117 traditional C versions. There is just one set of files to install, and
2118 it will work with ANSI or old C compilers (including `gcc -traditional').
2120 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2121 MIPS DECStation running Ultrix 4.
2123 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2124 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2125 made itself into a shared library.
2127 * Yet further improved support for the i386, running 4.3 BSD-like systems
2128 (such as Mach 3 with the Unix single-server), or System V.
2130 * New function `strncasecmp' to do case-insensitive string comparison
2131 with limited length.
2133 * New function `strsep' is a reentrant alternative to `strtok'.
2135 * New functions `scandir' and `alphasort' for searching directories.
2137 * New function `setenv' is a better interface to `putenv'.
2139 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2140 function for traversing a directory tree.
2142 * The GNU obstack package is now also part of the C library.
2143 The new function `open_obstack_stream' creates a stdio stream that
2144 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2145 formatted output directly to an obstack.
2147 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2148 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2150 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2152 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2153 things to your strings.
2155 * There are some new test programs: test-fseek, testmb, and testrand.
2157 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2158 These ports are not finished, but are a good starting place for really
2159 supporting those systems.
2161 * `/etc/localtime' is now the standard location for the file that says what
2162 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2163 This follows the general principle that `/etc' is the place for all local
2164 configuration files.
2166 * The C library header files now use `extern "C"' when used by the C++
2167 compiler, so the C library should now work with C++ code.
2169 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2170 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2173 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2174 function which uses the `merge sort' algorithm, and is said to be
2175 significantly faster than the old GNU `qsort' function. Merge sort is
2176 now the standard `qsort' function. The new algorithm can require a lot
2177 of temporary storage; so, the old sorting function is called when the
2178 required storage is not available.
2180 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2181 provides the Unix `crypt' function, plus some other entry points.
2183 * The code and header files taken from 4.4 BSD have been updated with the
2184 latest files released from Berkeley.
2186 ----------------------------------------------------------------------
2187 Copyright information:
2189 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2191 Permission is granted to anyone to make or distribute verbatim copies
2192 of this document as received, in any medium, provided that the
2193 copyright notice and this permission notice are preserved,
2194 thus giving the recipient permission to redistribute in turn.
2196 Permission is granted to distribute modified versions
2197 of this document, or of portions of it,
2198 under the above conditions, provided also that they
2199 carry prominent notices stating who last changed them.
2202 version-control: never
git://sourceware.org / glibc.git / blob