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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.
7 \f
8 Version 2.18
10 * The following bugs are resolved with this release:
12 11561, 13951, 14142, 14200, 14317, 14327, 14496, 14920, 14964, 14981,
13 14982, 14985, 14994, 14996, 15003, 15006, 15020, 15023, 15036, 15054,
14 15062, 15078.
16 * Add support for calling C++11 thread_local object destructors on thread
17 and program exit. This needs compiler support for offloading C++11
18 destructor calls to glibc.
20 \f
21 Version 2.17
23 * The following bugs are resolved with this release:
25 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
26 9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
27 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
28 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
29 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
30 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298, 14303,
31 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417,
32 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519,
33 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576,
34 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648,
35 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743,
36 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805,
37 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835,
38 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872, 14879,
39 14889, 14893, 14898, 14914.
41 * Optimization of memcpy for MIPS.
43 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
44 EMFILE has been fixed (Bugzilla #14889).
46 * The add-on ports collection is now distributed in the "ports" subdirectory
47 of the main GNU C Library distribution, rather than separately.
49 * Port to ARM AArch64 contributed by Linaro.
51 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
52 Optimized versions of memcpy, memset, and memcmp added for System z10 and
53 zEnterprise z196.
54 Implemented by Andreas Krebbel.
56 * The new function secure_getenv allows secure access to the environment,
57 returning NULL if running in a SUID/SGID process. This function replaces
58 the internal function __secure_getenv.
60 * SystemTap static probes have been added into the dynamic linker.
61 Implemented by Gary Benson.
63 * Optimizations of string functions strstr, strcasestr and memmem.
64 Implemented by Maxim Kuvyrkov.
66 * The minimum Linux kernel version that this version of the GNU C Library
67 can be used with is 2.6.16.
69 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
70 powerpc POWER7. Implemented by Will Schmidt.
72 * New configure option --disable-nscd builds the C library such that it
73 never attempts to contact the Name Service Caching Daemon (nscd).
74 New configure option --disable-build-nscd avoids building nscd itself;
75 this is the default if --disable-nscd is used.
77 * Improved support for cross-compilation, including cross-testing and
78 bootstrap builds without a previously built glibc.
80 * Several testsuite tests are now able to test multiple IFUNC variants of an
81 interface, rather than just testing the one that would be chooen by
82 default.
84 * New configure options --with-bugurl and --with-pkgversion, for
85 distributors to use to embed their bug-reporting and package version
86 information in --help and --version output.
88 * The ttyname and ttyname_r functions on Linux now fall back to searching for
89 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
90 allows creation of chroots without the procfs mounted on /proc.
92 * The `crypt' function now fails if passed salt bytes that violate the
93 specification for those values. On Linux, the `crypt' function will
94 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
95 enabled, and fail on encrypted strings using the MD5 or DES algorithm
96 when the mode is enabled.
98 * The `clock_*' suite of functions (declared in <time.h>) is now available
99 directly in the main C library. Previously it was necessary to link with
100 -lrt to use these functions. This change has the effect that a
101 single-threaded program that uses a function such as `clock_gettime' (and
102 is not linked with -lrt) will no longer implicitly load the pthreads
103 library at runtime and so will not suffer the overheads associated with
104 multi-thread support in other code such as the C++ runtime library.
106 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
107 sat_IN, and szl_PL.
108 \f
109 Version 2.16
111 * The following bugs are resolved with this release:
113 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
114 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
115 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
116 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
117 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
118 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
119 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
120 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
121 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
122 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
123 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
124 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
125 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
126 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
127 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
128 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
129 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
130 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
131 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
132 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
133 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
134 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
135 14278.
137 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
138 configuring glibc with:
139 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
140 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
141 Implemented by H.J. Lu.
143 * ISO C11 support:
145 + define static_assert
147 + do not declare gets
149 + declare at_quick_exit and quick_exit also for ISO C11
151 + aligned_alloc. NB: The code is deliberately allows the size parameter
152 to not be a multiple of the alignment. This is a moronic requirement
153 in the standard but it is only a requirement on the caller, not the
154 implementation.
156 + timespec_get added
158 + uchar.h support added
160 + CMPLX, CMPLXF, CMPLXL added
162 Implemented by Ulrich Drepper.
164 * Support for the IA-64 has been moved to ports.
166 * Remove support for anything but ELF binary format
168 * Checking versions of poll, ppoll added.
169 Implemented by Ulrich Drepper.
171 * More generic and 64-bit performance optimizations to math functions.
172 Implemented by Ulrich Drepper.
174 * New configure option --enable-obsolete-rpc makes the deprecated RPC
175 headers and functions available at compile time as they were before
176 version 2.14. This option will be removed at some time in the future
177 after the TI-RPC library becomes fully sufficient for the needs of
178 existing applications.
180 * Compatibility code for Linux kernel versions before 2.4 has been removed.
181 Note that glibc is not expected to work with any Linux kernel version
182 before 2.6.
184 * New header <sys/auxv.h> and function getauxval allowing easy access to
185 the AT_* key-value pairs passed from the Linux kernel. The header also
186 defines the HWCAP_* bits associated with the AT_HWCAP key.
188 * New locales: mag_IN
190 * New configure option --enable-systemtap builds SystemTap static probes
191 into libc for setjmp and longjmp and into libpthread for various operations.
192 So far the setjmp/longjmp probes and some of the libpthread probes are
193 provided only for i*86 and x86_64.
194 Implemented by Roland McGrath and Rayson Ho.
196 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
198 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
199 and Will Schmidt.
201 * More optimized functions for SPARC. Implemented by David S. Miller.
203 * Improved support for cross-compilation, especially bootstrap builds
204 without a previously built glibc.
206 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
207 Chris Metcalf from Tilera.
209 * Support for the old ARM ABI has been removed from ports. Only the EABI is
210 now supported for ARM processors.
212 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
213 as the name of the dynamic linker, to distinguish it from the
214 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
216 * Support for CRIS has been removed from ports.
218 * A new class of installed header has been documented for low-level
219 platform-specific functionality. PowerPC added the first instance with a
220 function to provide time base register access. Contributed by Tulio
221 Magno Quites Machado Filho.
223 * ix86 configurations now install header files that are consistent with
224 what x86-64 configurations install. These same header files can be used
225 for -m32, -m64, or -mx32 builds.
226 Contributed by H.J. Lu.
228 * Math library bug fixes. A thorough audit of all open math library bugs was
229 conducted by Joseph Myers. Significant progress was made on many math
230 library bugs resulting in more accurate exceptions and function results.
231 Many thanks to all those that contributed including Andreas Jaeger for his
232 patch review and work on the x87 trigonometric instruction issues.
234 * Timezone data is no longer installed. Timezone-related binaries and scripts
235 will continue to be installed. Users should obtain their timezone data from
236 their distribution provider or from the tzdata package at
237 <ftp://munnari.oz.au/pub/>.
238 \f
239 Version 2.15
241 * The following bugs are resolved with this release:
243 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
244 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
245 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
246 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
247 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
248 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
249 13484, 13506, 13515, 13523, 13524, 13538, 13540
251 * New program pldd to list loaded object of a process
252 Implemented by Ulrich Drepper.
254 * Add nss_db support back to glibc. No more dependency on Berkeley db
255 and support for initgroups lookups.
256 Implemented by Ulrich Drepper.
258 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
259 Contributed by HJ Lu.
261 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
262 Contributed by HJ Lu.
264 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
265 on x86-32 and x86-64.
266 Contributed by Liubov Dmitrieva.
268 * Optimized strchr and strrchr for SSE on x86-32.
269 Contributed by Liubov Dmitrieva.
271 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
272 for x86-64 and x86-32.
273 Contributed by Liubov Dmitrieva.
275 * New interfaces: scandirat, scandirat64
276 Implemented by Ulrich Drepper.
278 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
279 Implemented by Ulrich Drepper.
281 * nscd now also caches the netgroup database.
282 Implemented by Ulrich Drepper.
284 * Integrate libm with gcc's -ffinite-math-only option.
285 Implemented by Ulrich Drepper.
287 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
288 to math functions. Implemented by Ulrich Drepper.
290 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
291 Implemented by Ulrich Drepper.
293 * New Linux interfaces: process_vm_readv, process_vm_writev
295 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
296 Implemented by Ulrich Drepper.
298 * Optimized nearbyint and strcasecmp for PPC.
299 Implemented by Adhemerval Zanella.
301 * New locales: bho_IN, unm_US, es_CU, ta_LK
302 \f
303 Version 2.14
305 * The following bugs are resolved with this release:
307 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
308 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
309 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
310 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
311 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
312 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
313 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
314 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
315 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
316 12795, 12811, 12813, 12814, 12841
318 * The RPC implementation in libc is obsoleted. Old programs keep working
319 but new programs cannot be linked with the routines in libc anymore.
320 Programs in need of RPC functionality must be linked against TI-RPC.
321 The TI-RPC implementation is IPv6 enabled and there are other benefits.
323 Visible changes of this change include (obviously) the inability to link
324 programs using RPC functions without referencing the TI-RPC library and the
325 removal of the RPC headers from the glibc headers.
326 Implemented by Ulrich Drepper.
328 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
329 syncfs, setns, sendmmsg
331 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
332 yue_HK, lij_IT, mhr_RU
334 * New encodings: CP770, CP771, CP772, CP773, CP774
336 * New program sotruss to trace calls through PLTs
337 Implemented by Ulrich Drepper.
339 * The malloc hook implementation is marked deprecated and will be removed
340 from the default implementation in the next version. The design never
341 worked ever since the introduction of threads. Even programs which do
342 not create threads themselves can use multiple threads created internally.
343 \f
344 Version 2.13
346 * The following bugs are resolved with this release:
348 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
349 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
350 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
351 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
352 12378, 12394, 12397
354 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
356 * POWER7 optimizations: memset, memcmp, strncmp
358 * New optimized string functions for x86-64: strnlen (SSE2),
359 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
360 Implemented by Ulrich Drepper.
361 \f
362 Version 2.12
364 * The following bugs are resolved with this release:
366 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
367 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
368 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
369 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
370 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
371 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
372 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
373 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
375 * New interfaces: pthread_getname_np, pthread_setname_np
377 * New Linux interface: recvmmsg
379 * STT_GNU_IFUNC implemented for Sparc by David Miller.
381 * The dynamic linker now recognizes supported ABI versions from the
382 EI_ABIVERSION field in the ELF header.
383 Implemented by Ulrich Drepper.
385 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
386 will not be used to fill in password fields in the passwd.byname replies.
387 Instead it is used to synthesize the shadow.byname table, should it be
388 missing. This is a useful mode in some installations involving Solaris.
389 Implemented by Ulrich Drepper.
391 * New locales: kok_IN, sq_MK, cv_RU
392 \f
393 Version 2.11
395 * The following bugs are resolved with this release:
397 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
398 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
399 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
400 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
401 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
402 10789, 10817, 10823, 10840, 10847
404 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
405 mkostemps64
406 Implemented by Ulrich Drepper.
408 * Checking version of longjmp added that fails if an uninitialized stack
409 frame would be created. Implemented by Ulrich Drepper.
411 * STT_GNU_IFUNC is now supported in static executables.
412 Implemented by H.J. Lu.
414 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
416 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
417 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
418 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
419 Contributed by H.J. Lu.
421 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
422 Implemented by Ulrich Drepper.
424 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
425 strstr, strcasestr.
426 Contributed by H.J. Lu.
428 * Support for fma instruction in AVX on x86-64.
429 Implemented by H.J. Lu and Ulrich Drepper.
431 * AVX support in x86-64 auditing support in ld.so.
432 Implemented by H.J. Lu.
434 * STB_GNU_UNIQUE support added.
435 Implemented by Ulrich Drepper.
437 * Implement second fallback mode for optimized DNS lookup for even more
438 broken environments. If two requests from the same port are not
439 handled correctly close the socket and open a new one before sending
440 the second request. The 'single-request-reopen' option in /etc/resolv.conf
441 can be used to select this mode right away, instead of rediscovering the
442 necessity is every process again.
443 Implemented by Ulrich Drepper.
445 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
446 Implemented by Adam Tkac.
448 * Optimized iconv conversions for S390x.
449 Implemented by Andreas Krebbel.
451 * Using condvars with PI mutexes is now more efficient due to kernel
452 support for requeueing to PI futexes. NPTL support added for x86-64.
453 Implemented by Ulrich Drepper.
455 * New locales: ps_AF, my_MM
456 \f
457 Version 2.10
459 * The following bugs are resolved with this release:
461 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
462 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
463 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
464 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
465 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
467 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
468 Implemented by Ulrich Drepper.
470 * New Linux interfaces: accept4, fallocate, fallocate64.
471 Implemented by Ulrich Drepper.
473 * Correct declarations of string function when used in C++ code. This
474 could lead to compile errors for invalid C++ code.
476 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
477 now in POSIX.
479 * New POSIX 2008 interface: psiginfo
480 Implemented by Ulrich Drepper.
482 * New ISO C++1x interfaces: quick_exit, at_quick_exit
483 Implemented by Ulrich Drepper.
485 * Support for selecting between multiple function definitions at runtime
486 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
488 * The libcrypt library can now use the hash function implementations in
489 NSS. Implemented by Ulrich Drepper.
491 * The malloc implementation can be compiled to be less memory efficient
492 but higher performing in multi-threaded programs.
493 Implemented by Ulrich Drepper.
495 * New locales: nan_TW@latin, ks_IN
497 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
498 Implemented by Ulrich Drepper.
500 * Extended printf hook support. It is possible to use user-defined types
501 and extend existing format specifiers.
502 Implemented by Ulrich Drepper.
504 * Handling for group shadow files has been added.
505 Implemented by Ulrich Drepper.
507 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
508 servers (the case, e.g., for some people using the built-in DNS
509 server in ADSL modems/routers). There is a once-per-process timeout
510 in case of a broken server. To avoid it, users can run nscd or put
511 'options single-request' in /etc/resolv.conf.
512 Implemented by Ulrich Drepper.
513 \f
514 Version 2.9
516 * The following bugs are resolved with this release:
518 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
519 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
520 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
521 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
522 6968, 6974, 6980, 6995, 7008, 7009, 7029
524 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
525 up at the same time. Implemented by Ulrich Drepper.
527 * TLS descriptors for LD and GD on x86 and x86-64.
528 Implemented by Alexandre Oliva.
530 * getaddrinfo now handles DCCP and UDPlite.
531 Implemented by Ulrich Drepper.
533 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
534 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
535 Implemented by Ulrich Drepper.
537 * New implementation of memmem, strstr, and strcasestr which is O(n).
538 Implemented by Eric Blake.
540 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
542 * Implement "e" option for popen to open file descriptor with the
543 close-on-exec flag set. Implemented by Ulrich Drepper.
545 * Implement "b" mode for fmemopen. In this mode writes writes don't
546 implicitly add a NUL byte and seeks from the end of the buffer really
547 use the buffer end, not the string length as the basis.
548 Implemented by Ulrich Drepper.
550 * Many functions, exported and internal, now atomically set the close-on-exec
551 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
553 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
554 Sinhala)
555 Implemented by Pravin Satpute.
557 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
558 \f
559 Version 2.8
561 * The following bugs are resolved with this release:
563 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
564 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
565 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
566 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
567 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
568 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
569 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
571 * New locales: bo_CN, bo_IN, shs_CA.
573 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
575 * Sorting rules for some Indian languages (Devanagari and Gujarati).
576 Implemented by Pravin Satpute.
578 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
580 * nscd caches now all timeouts for DNS entries
581 Implemented by Ulrich Drepper.
583 * nscd is more efficient and wakes up less often.
584 Implemented by Ulrich Drepper.
586 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
587 vdprintf, and obstack_vprintf.
588 Implemented by Jakub Jelinek.
590 * Faster memset for x86-64.
591 Implemented by Harsha Jagasia and H.J. Lu.
593 * Faster memcpy on x86.
594 Implemented by Ulrich Drepper.
596 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
597 Implemented by Ulrich Drepper.
599 * Faster sqrt and sqrtf implemention for some PPC variants.
600 Implemented by Steven Munroe.
601 \f
602 Version 2.7
604 * The following bugs are resolved with this release:
606 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
607 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
608 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
609 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
610 5071, 5103, 5104, 5112, 5113, 5184, 5186
612 * More checking functions: fread, fread_unlocked, open*, mq_open.
613 Implemented by Jakub Jelinek and Ulrich Drepper.
615 * Extend fortification to C++. Implemented by Jakub Jelinek.
617 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
618 by not recognizing 'a' as a modifier when those specs are requested.
619 Implemented by Jakub Jelinek.
621 * PPC optimizations to math and string functions.
622 Implemented by Steven Munroe.
624 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
625 options to be passed. Implemented by Ulrich Drepper.
627 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
629 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
630 Implemented by Ulrich Drepper.
632 * Handle private futexes in the NPTL implementation.
633 Implemented by Jakub Jelinek and Ulrich Drepper.
635 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
636 Implemented by Roland McGrath and Ulrich Drepper.
638 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
640 * SHA-256 and SHA-512 based password encryption.
641 Implemented by Ulrich Drepper.
643 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
644 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
645 yo_NG.
647 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
648 Implemented by Ulrich Drepper.
649 \f
650 Version 2.6
652 * The following bugs are resolved with this release:
654 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
655 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
656 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
657 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
658 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
659 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
660 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
661 4702, 4858
663 * New Linux interfaces: epoll_pwait, sched_getcpu.
665 * New generic interfaces: strerror_l.
667 * nscd can now cache the services database. Implemented by Ulrich Drepper.
668 \f
669 Version 2.5
671 * The following bugs are resolved with this release:
673 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
674 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
675 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
676 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
677 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
678 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
679 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
680 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
681 3225, 3251, 3252, 3253, 3273
683 * For Linux, the sorting of addresses returned by getaddrinfo now also
684 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
685 Implemented by Ulrich Drepper.
687 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
688 Implemented by Ulrich Drepper.
690 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
692 * New iconv module for MIK. Contributed by Alexander Shopov.
694 * For sites with broken group and/or passwd database, the auto-propagate
695 option of nscd can prevent creating ID lookup entries from the results
696 of a name lookup and vice versa. This usually is no problem but some
697 site might have problems with the default behavior.
698 Implemented by Ulrich Drepper.
700 * Iterating over entire database in NIS can be slow. With the
701 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
702 to trade time for memory. The entire database will be read at once.
703 Implemented by Ulrich Drepper.
705 * The interfaces introduced in RFC 3542 have been implemented by
706 Ulrich Drepper.
708 * Support for the new ELF hash table format was added by Ulrich Drepper.
710 * Support for priority inheritance mutexes added by Jakub Jelinek and
711 Ulrich Drepper.
713 * Support for priority protected mutexes added by Jakub Jelinek.
715 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
716 or_IN, csb_PL, fy_NL, sr_ME.
717 \f
718 Version 2.4
720 * More overflow detection functions.
722 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
723 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
725 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
726 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
727 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
728 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
729 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
730 by Masahide Washizawa.
732 * It is now possible to install audit libraries for the dynamic linker using
733 LD_AUDIT. Implemented by Ulrich Drepper.
735 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
736 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
737 For a libc and libpthread that works well on Linux 2.4 kernels, we
738 recommend using the stable 2.3 branch.
740 * The new function open_wmemstream acts like open_memstream,
741 but uses a wchar_t wide character buffer.
743 * The new function ppoll is an improved version of poll, similar to pselect.
745 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
746 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
747 renameat, unlinkat, linkat, symlinkat, readlinkat.
749 * New Linux kernel system calls: unshare,
750 inotify_init, inotify_add_watch, inotify_rm_watch.
752 * The euidaccess function is now also known by the alias eaccess,
753 for compatibility with some other systems.
755 * Timezone data updated to 2006b version.
756 \f
757 Version 2.3.6
759 * The following bugs are resolved with this release:
761 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
762 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
763 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
764 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
765 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
766 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
768 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
770 * As of this release, GCC 4 can be used to compile the C Library.
772 * Timezone data updated to 2005m version.
773 \f
774 Version 2.3.5
776 * The following bugs are resolved with this release:
778 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
779 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
780 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
781 777, 787, 821, 822, 823, 825
783 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
784 \f
785 Version 2.3.4
787 * Support for RFC 3678. Real implementations exist only for Linux so far.
788 Implemented by Ulrich Drepper.
790 * nscd can now cache entries persistently. Expiring entries are reloaded.
791 For speedups the cache can be shared in memory with client processes.
792 Implemented by Ulrich Drepper.
794 * nscd can now perform SELinux checks.
795 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
797 * getaddrinfo queries are now cached. Canonical name lookup is performed
798 efficiently.
799 Implemented by Ulrich Drepper.
801 * The nothrow function attribute is used when headers are used by gcc when
802 compiling C code. This can avoid significant amounts of exception
803 handling data.
805 * The malloc functions perform more error checking and are stricter when
806 it comes to reacting on errors. The default action is to terminate
807 the process after showing an error message. Implemented by Ulrich Drepper.
809 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
810 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
812 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
813 namespaces using the new function dlmopen(). This feature is of course,
814 like most other dynamic loading functionality, not available in statically
815 linked applications. Implemented by Ulrich Drepper.
817 * Low-overhead boundary checking variants of string and some stdio functions
818 were added. These are to be used in conjunction with a gcc patch by
819 Jakub Jelinek which adds calls to these functions if possible.
820 Implemented by Jakub Jelinek and Ulrich Drepper.
822 * Old code for several operating systems and machine architectures that
823 have not been in working condition in a long time have been removed from
824 the main source tree maintained by the GNU C Library's maintainers.
825 These files are now reside in the separate `ports' source module
826 that is usable as an add-on when building the library.
827 \f
828 Version 2.3.3
830 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
831 interrogate the dynamic linker, compatible with the Solaris interface.
833 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
834 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
836 * getifaddrs now uses the netlink interface on Linux to get its information.
837 Implemented by Thorsten Kukuk.
839 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
840 Implemented by Ulrich Drepper.
842 * support for non-executable stacks on x86 has been added. Changes mostly
843 by Roland McGrath.
845 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
846 and Ulrich Drepper.
848 * getaddrinfo now performs destination address selection according to
849 RFC 3484.
850 \f
851 Version 2.3.2
853 * Thread-safe interfaces for many functions that access locale data
854 were added in version 2.3, but these features were omitted from NEWS.
855 Many functions have variants with an `_l' suffix that take a `locale_t'
856 object as a parameter rather than consulting the current locale.
857 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
858 create and maintain `locale_t' objects. Additionally, the new function
859 `uselocale' sets "the current locale" (as used by functions not so
860 parameterized) set for an individual thread. These features were added
861 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
863 * The functions getresuid, getresgid, setresuid, and setresgid, which
864 have long been available on Linux, are now declared in <unistd.h>
865 and are now also available on the Hurd.
867 * ELF thread-local storage support (TLS) now works on x86-64.
869 * The new dynamic string token $LIB is expanded in shared library names.
870 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
872 * Aldy Hernandez contributed complete software floating point support for
873 PowerPC machines with no FPU.
875 * fexecve is implemented on Linux.
877 * The `btowc' function should work at least twice as fast due to
878 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
880 * With approriate thread add-ons cancelable functions are now implemented
881 in libc.so as well. No need to call the function in libpthread. This
882 change allowed to finally disable the incorrect and expensive handling
883 of weak definition in ld.so.
885 * Yet more PLT entries in libc.so have been removed. We finally arrived
886 at the bare minimum. Startup times improved appropriately.
888 * Support for the new Linux/x86 system call interface was added. The
889 AT_SYSINFO auxiliary vector entry is recognized and handled.
890 \f
891 Version 2.3
893 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
894 charsets.
896 * iconv (the program and the interface) now accepts empty names (excluding
897 options like //TRANSLIT) to mean "use charset of current locale".
899 * localedef can now transliterate characters in strings which are not in
900 the provided charmap. The information from the input locale is used.
902 * Prelinking support was added for ELF targets. This requires additional
903 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
905 * Read-only stdio streams now use mmap to speed up operation by eliminating
906 copying and buffer underflows. To use add 'm' to the mode string of
907 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
909 * The malloc functions were completely rewritten by Wolfram Gloger based
910 on Doug Lea's malloc-2.7.0.c.
912 * Isamu Hasegawa contributed a completely new and POSIX-conformant
913 implementation of regex.
915 * Bruno Haible upgraded the iconv and locale implementation to support
916 Unicode 3.2.
918 * Contents of the LC_* and LANG environment variables in the CEN style are
919 not recognized anymore. It never was used. Change by Ulrich Drepper.
921 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
922 thread-local storage (TLS) ABI on some platforms.
923 Changes by Ulrich Drepper. SH support by Kaz Kojima.
925 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
926 EUC-JISX0213, and TSCII.
928 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
929 BSD-compatible interface for getting all network interface addresses.
930 Implementation for IPv4 by Roland McGrath.
932 * Loading of locale data is faster due to the introduction of a locale
933 archive. Implemented by Roland McGrath and Ulrich Drepper.
935 * Startup times are significantly reduced by not using exported functions
936 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
937 and Ulrich Drepper.
939 * Steven Munroe contributed a port to PowerPC64/Linux.
940 \f
941 Version 2.2.6
943 * The Hurd now uses the GNU libio implementation of stdio rather than the
944 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
946 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
947 with the same behavior as the Linux system call of the same name.
948 \f
949 Version 2.2.5
951 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
952 128-bit long double format.
954 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
955 IBM1161, and IBM1162 charsets.
957 * Andreas Jaeger contributed a port to x86-64/Linux.
959 * Peter Bruin contributed a port to PowerPC/Hurd.
961 * libc functions using I/O streams now can handle wide-oriented streams
962 as well.
964 * optimizations in the dynamic linker. Binaries created by recent binutils
965 versions start up quicker due to reduced time spent on relocations.
967 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
968 \f
969 Version 2.2.4
971 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
972 asinh, atanh, j0 for the 128-bit long double format.
974 * Bruno Haible updated all the code handling Unicode in some form to
975 support Unicode 3.1.
977 * Speed of regex for single-byte locales is back to previous levels.
978 Patch by Isamu Hasegawa.
980 * Alpha, SPARC, and IA-64 now also using floating stacks.
982 * Startup time of internationalized applications greatly improved through
983 iconv cache. Use iconvconfig to generate the cache file.
984 Contributed by Ulrich Drepper.
986 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
987 severe performance problems. Patch by David Mosberger.
989 * The Hurd port got a lot more functionality like AIO, various stdio
990 extensions, etc. Mainly done by Roland McGrath.
992 * mtrace can now lookup symbols in shared libraries.
993 \f
994 Version 2.2.3
996 * Intel's IA-64 math library is largely integrated. It provides fast and
997 accurate implementatations for most basic and standard math functions
998 in float, double, and long double format.
1000 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1001 and asin for the 96-bit long double format and asin, log, tan for the
1002 128-bit long double format.
1004 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1005 The basic double functions exist today. Contributed by Abraham Ziv
1006 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1007 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1009 * An asynchronous name lookup library was added. The interface is designed
1010 after POSIX AIO. The proposal was circulated beforehand to get comments.
1011 No negative ones came in. Implemented by Ulrich Drepper.
1013 * Port to S390/64bit contributed by Martin Schwidefsky
1014 <schwidefsky@de.ibm.com>.
1016 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1017 of functions for Linux/IA-64.
1019 * The RPC code is now thread safe. Threads can now use the same service
1020 of different services at the same time. Patch by Eric Norum
1021 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1023 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1024 family of functions for Linux/S390.
1026 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1027 of functions for Linux/x86.
1029 * Port to Linux/CRIS contributed by Axis Communications.
1030 \f
1031 Version 2.2.2
1033 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1034 we can now check for namespace violations and missing declarations. The
1035 result is that almost all headers are now Unix-compliant (as defined in
1036 the upcoming XPG6). The negative side is that some programs might need
1037 corrections, too, if they depend on the incorrect form of the headers in
1038 previous versions which defined too many symbols and included too many
1039 other headers.
1041 * regex now handles multibyte character sets correctly.
1042 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1044 * iconv (the program) does now conform to the upcoming XPG6 and handles
1045 charmaps. Instead of the charset names the path of charmaps can be
1046 provided and the conversion happens based on this data.
1047 Contributed by Ulrich Drepper.
1049 * The locale program now provides detailed information about the installed
1050 locales. While
1052 locale -a
1054 only lists the names of the supported locales
1056 locale -a --verbose
1058 provides details such as country, language, and codeset name.
1059 Contributed by Ulrich Drepper.
1060 \f
1061 Version 2.2.1
1063 * The gencat program now parses the input file according to the charset
1064 selected by the LC_CTYPE category. This is important for stateful
1065 character sets. To make generating catalogs easier there is a way
1066 to overwrite the charset selected by the locale: before the first
1067 message or $ quote line the catalog can contain a line like
1069 $ codeset=ISO-8859-2
1071 to select the charset (ISO-8859-2 in this case).
1073 Implemented by Shinya Hanataka and Ulrich Drepper.
1075 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1076 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1077 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1079 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1080 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1082 * The LANGUAGE environment variable is now ignored unless the locale is
1083 changed from the default "C" locale.
1085 * The usual bug fixes.
1086 \f
1087 Version 2.2
1089 * Greg McGary added runtime support for bounds checking using gcc's
1090 new -fbounded-pointers option. ix86 target is complete. PowerPC
1091 is in progress.
1093 * Thorsten Kukuk added secure mode support to nscd.
1095 * The Berkeley db libraries have been removed.
1097 Related, the nss_db module is now in a separate package since it
1098 obviously requires a database library being available.
1100 * Wide character I/O streams implemented by Ulrich Drepper.
1102 * Functions from the extended socket API added by Ulrich Drepper.
1104 * Functions feenableexcept and fedisableexcept to control the
1105 behaviour of individual exceptions have been added by Andreas Jaeger.
1107 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1109 * The resolver code has been updated from bind 8.2.3-T5B which supports
1110 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1111 and Mark Kettenis.
1113 This change could in some situations effect backward compatibility. Since
1114 now `_res' is a thread-local instead of a global variable, modifying it
1115 in one thread does not have any effect in other threads.
1117 The resolver library was also extended to allow IPv6 as the transport
1118 protocol for the requests. This work was done by Stig Venaas.
1120 * Compatibility code for K&R C compilers has been removed from the
1121 header files. A ISO C compiler is needed to use the library
1122 (conforming to either C89 or C99 standard).
1124 * Complete rewrite of the localedef program to support multibyte character
1125 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1126 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1127 Implemented by Ulrich Drepper.
1129 Bruno Haible significantly improved the generation and use of the data
1130 structures for the wide character tables.
1132 * Plural handling in gettext implemented by Ulrich Drepper.
1134 * The utmp daemon has been removed.
1136 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1138 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1139 and Yutaka Niibe.
1141 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1143 * POSIX barriers implemented by Kaz Kylheku.
1145 * POSIX spawn function family implemented by Ulrich Drepper.
1147 * POSIX spinlocks are now available.
1149 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1151 * the configure option --enable-kernel=X.Y.Z allows to strip out
1152 compatibility for kernel versions before X.Y.Z. This is currently only
1153 implemented for Linux.
1155 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1156 field sin6_scope_id. This means that all programs using IPv6 should be
1157 recompiled. Don't expect binary compatibility with previous glibc
1158 versions.
1160 * various conversion modules for IBM character sets contributed by
1161 Masahide Washizawa.
1163 * IA-64 port by Jes Sorensen and HJ Lu.
1164 \f
1165 Version 2.1.3
1167 * bug fixes
1169 \f
1170 Version 2.1.2
1172 * bug fixes
1174 \f
1175 Version 2.1.1
1177 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1179 * New xdr functions are added; some rpc functions are now 64bit clean.
1181 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1183 * Fixed known incompatibilities with glibc 2.0.
1185 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1187 * Optimized a number of functions (especially the ELF dynamic loader).
1189 * Update timezone data files.
1191 * lots of charmaps corrections
1193 * some new locale definitions and charmaps
1195 \f
1196 Version 2.1
1198 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1199 conform to POSIX member type requirements. Symbol versions have been
1200 adjusted as needed within the library, and for direct use by applications,
1201 but there is potential for problems if third-party libraries use
1202 struct timeval as part of their interface. This does not present
1203 a problem for X and other "essential" system libraries.
1205 * An additional locale model to support C++ Standard Library locale
1206 model and probably more was implemented by Ulrich Drepper.
1208 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1209 symbol level.
1211 * Miles Bader provided the `argp' function family to support hierachical
1212 command line argument parsing, layered on top of getopt.
1214 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1216 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1217 numbers.
1219 * scanf recognizes the %a and %A format for scanning floating point numbers.
1221 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1222 information and interfaces for the available integer types.
1224 * about 130 new math functions were added to implement the ISO C9x math
1225 library.
1227 * the new header <complex.h> contains definitions of the complex math
1228 functions from ISO C 9X.
1230 * the new header <tgmath.h> defines generic macros to use complex or
1231 real valued functions.
1233 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1235 * Andreas Jaeger provided a test suite for the math library.
1237 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1239 * Ulrich Drepper added character set conversion functions (iconv).
1241 * Optimized string functions have been added.
1243 * The localedata addon is now part of glibc.
1245 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1247 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1248 daemon for NSS (nscd).
1250 Missing a better place here are some numbers on improvements. Under
1251 Linux 2.1.125 un-tar-ing the kernel sources takes
1253 user system wall
1255 using local files 12.19s 6.88s 22.91s
1257 using NIS 13.92s 8.91s 26.34s
1259 using NIS & nscd 10.37s 7.34s 25.30s
1261 using NIS+ 27.57s 30.37s 640.46s
1263 using NIS+ & nscd 10.25s 7.83s 26.51s
1265 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1267 Keep in mind that non-namelookup related operations dominate above times.
1268 It was just a common complain that using NIS+ unpacking the kernel is
1269 horribly slow.
1271 [1] The old nscd implementation is not available anymore since it was
1272 distributed with glibc up to version 2.0.98 and thus is now replaced.
1274 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1276 * Mark Kettenis provided a Hesiod NSS module.
1278 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1279 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1281 * rcmd can now handle netgroups (Dick Streefland).
1283 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1284 Bambrough.
1286 * Support for the IPv6 protocol has been added to the socket API, as per the
1287 latest draft standards.
1289 * Support for Linux 2.2 has been added.
1291 * Interface changes relative to the latest 2.0.x release:
1292 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1293 addseverity NEW: Unix98
1294 alphasort64 NEW: LFS
1295 argp_err_exit_status NEW: argp, GNU ext
1296 argp_error NEW: argp, GNU ext
1297 argp_failure NEW: argp, GNU ext
1298 argp_help NEW: argp, GNU ext
1299 argp_parse NEW: argp, GNU ext
1300 argp_program_bug_address NEW: argp, GNU ext
1301 argp_program_version NEW: argp, GNU ext
1302 argp_program_version_hook NEW: argp, GNU ext
1303 argp_state_help NEW: argp, GNU ext
1304 argp_usage NEW: argp, GNU ext
1305 authdes_create NEW: Secure RPC
1306 authdes_getucred NEW: Secure RPC
1307 authdes_pk_create NEW: Secure RPC
1308 backtrace NEW: GNU ext.
1309 backtrace_symbols NEW: GNU ext.
1310 backtrace_symbols_fd NEW: GNU ext.
1311 cacos NEW: ISO C 9x
1312 cacosf NEW: ISO C 9x
1313 cacosh NEW: ISO C 9x
1314 cacoshf NEW: ISO C 9x
1315 cacoshl NEW: ISO C 9x
1316 cacosl NEW: ISO C 9x
1317 capget NEW: kernel
1318 capset NEW: kernel
1319 carg NEW: ISO C 9x
1320 cargf NEW: ISO C 9x
1321 cargl NEW: ISO C 9x
1322 casin NEW: ISO C 9x
1323 casinf NEW: ISO C 9x
1324 casinh NEW: ISO C 9x
1325 casinhf NEW: ISO C 9x
1326 casinhl NEW: ISO C 9x
1327 casinl NEW: ISO C 9x
1328 catan NEW: ISO C 9x
1329 catanf NEW: ISO C 9x
1330 catanh NEW: ISO C 9x
1331 catanhf NEW: ISO C 9x
1332 catanhl NEW: ISO C 9x
1333 catanl NEW: ISO C 9x
1334 cbc_crypt NEW: Secure RPC
1335 ccos NEW: ISO C 9x
1336 ccosf NEW: ISO C 9x
1337 ccosh NEW: ISO C 9x
1338 ccoshf NEW: ISO C 9x
1339 ccoshl NEW: ISO C 9x
1340 ccosl NEW: ISO C 9x
1341 cexp NEW: ISO C 9x
1342 cexpf NEW: ISO C 9x
1343 cexpl NEW: ISO C 9x
1344 cimag NEW: ISO C 9x
1345 cimagf NEW: ISO C 9x
1346 cimagl NEW: ISO C 9x
1347 clearerr_locked REMOVED
1348 clntunix_create NEW: sunrpc ext
1349 clog NEW: ISO C 9x
1350 clog10 NEW: ISO C 9x
1351 clog10f NEW: ISO C 9x
1352 clog10l NEW: ISO C 9x
1353 clogf NEW: ISO C 9x
1354 clogl NEW: ISO C 9x
1355 conj NEW: ISO C 9x
1356 conjf NEW: ISO C 9x
1357 conjl NEW: ISO C 9x
1358 cpow NEW: ISO C 9x
1359 cpowf NEW: ISO C 9x
1360 cpowl NEW: ISO C 9x
1361 cproj NEW: ISO C 9x
1362 cprojf NEW: ISO C 9x
1363 cprojl NEW: ISO C 9x
1364 creal NEW: ISO C 9x
1365 crealf NEW: ISO C 9x
1366 creall NEW: ISO C 9x
1367 creat64 NEW: LFS
1368 csin NEW: ISO C 9x
1369 csinf NEW: ISO C 9x
1370 csinh NEW: ISO C 9x
1371 csinhf NEW: ISO C 9x
1372 csinhl NEW: ISO C 9x
1373 csinl NEW: ISO C 9x
1374 csqrt NEW: ISO C 9x
1375 csqrtf NEW: ISO C 9x
1376 csqrtl NEW: ISO C 9x
1377 ctan NEW: ISO C 9x
1378 ctanf NEW: ISO C 9x
1379 ctanh NEW: ISO C 9x
1380 ctanhf NEW: ISO C 9x
1381 ctanhl NEW: ISO C 9x
1382 ctanl NEW: ISO C 9x
1383 des_setparity NEW: Secure RPC
1384 ecb_crypt NEW: Secure RPC
1385 endutxent NEW: Unix98
1386 exp10 NEW: ISO C 9x
1387 exp10f NEW: ISO C 9x
1388 exp10l NEW: ISO C 9x
1389 exp2 NEW: ISO C 9x
1390 exp2f NEW: ISO C 9x
1391 exp2l NEW: ISO C 9x
1392 fattach NEW: STREAMS
1393 fdetach NEW: STREAMS
1394 fdim NEW: ISO C 9x
1395 fdimf NEW: ISO C 9x
1396 fdiml NEW: ISO C 9x
1397 feclearexcept NEW: ISO C 9x
1398 fegetenv NEW: ISO C 9x
1399 fegetexceptflag NEW: ISO C 9x
1400 fegetround NEW: ISO C 9x
1401 feholdexcept NEW: ISO C 9x
1402 feof_locked REMOVED
1403 feraiseexcept NEW: ISO C 9x
1404 ferror_locked REMOVED
1405 fesetenv NEW: ISO C 9x
1406 fesetexceptflag NEW: ISO C 9x
1407 fesetround NEW: ISO C 9x
1408 fetestexcept NEW: ISO C 9x
1409 feupdateenv NEW: ISO C 9x
1410 fflush_locked REMOVED
1411 ffsl NEW: GNU ext.
1412 ffsll NEW: GNU ext.
1413 fgetpos64 NEW: LFS
1414 fgets_unlocked NEW: GNU ext.
1415 fileno_locked REMOVED
1416 fma NEW: ISO C 9x
1417 fmaf NEW: ISO C 9x
1418 fmal NEW: ISO C 9x
1419 fmax NEW: ISO C 9x
1420 fmaxf NEW: ISO C 9x
1421 fmaxl NEW: ISO C 9x
1422 fmin NEW: ISO C 9x
1423 fminf NEW: ISO C 9x
1424 fminl NEW: ISO C 9x
1425 fmtmsg NEW: Unix98
1426 fopen64 NEW: LFS
1427 fputc_locked REMOVED
1428 fputs_unlocked NEW: GNU ext.
1429 fread_unlocked NEW: GNU ext.
1430 freopen64 NEW: LFS
1431 fseeko NEW: Unix98
1432 fsetpos64 NEW: LFS
1433 fstatfs64 NEW: LFS
1434 fstatvfs NEW: Unix98
1435 fstatvfs64 NEW: LFS
1436 ftello NEW: Unix98
1437 ftello64 NEW: LFS
1438 ftruncate64 NEW: LFS
1439 ftw64 NEW: LFS
1440 fwrite_unlocked NEW: GNU ext.
1441 gai_strerror NEW: IPv6
1442 gamma_r REMOVED
1443 gammaf_r REMOVED
1444 gammal_r REMOVED
1445 getchar_locked REMOVED
1446 getdate NEW: Unix98
1447 getdate_err NEW: Unix98
1448 getdate_r NEW: GNU ext.
1449 getmsg NEW: STREAMS
1450 getnameinfo NEW: IPv6
1451 getnetname NEW: Secure RPC
1452 getpmsg NEW: STREAMS
1453 getpt NEW: Unix98 PTY
1454 getrlimit64 NEW: LFS
1455 getutxent NEW: Unix98
1456 getutxid NEW: Unix98
1457 getutxline NEW: Unix98
1458 glob64 NEW: GNU ext.
1459 globfree64 NEW: GNU ext.
1460 gnu_get_libc_release NEW: GNU ext.
1461 gnu_get_libc_version NEW: GNU ext.
1462 grantpt NEW: Unix98 PTY
1463 host2netname NEW: Secure RPC
1464 iconv NEW: iconv
1465 iconv_close NEW: iconv
1466 iconv_open NEW: iconv
1467 if_freenameindex NEW: IPv6
1468 if_indextoname NEW: IPv6
1469 if_nameindex NEW: IPv6
1470 if_nametoindex NEW: IPv6
1471 in6addr_any NEW: IPv6
1472 in6addr_loopback NEW: IPv6
1473 inet6_isipv4mapped NEW: IPv6
1474 isastream NEW: STREAMS
1475 iswblank NEW: GNU ext.
1476 key_decryptsession NEW: Secure RPC
1477 key_decryptsession_pk NEW: Secure RPC
1478 key_encryptsession NEW: Secure RPC
1479 key_encryptsession_pk NEW: Secure RPC
1480 key_gendes NEW: Secure RPC
1481 key_get_conv NEW: Secure RPC
1482 key_secretkey_is_set NEW: Secure RPC
1483 key_setnet NEW: Secure RPC
1484 key_setsecret NEW: Secure RPC
1485 llrint NEW: ISO C 9x
1486 llrintf NEW: ISO C 9x
1487 llrintl NEW: ISO C 9x
1488 llround NEW: ISO C 9x
1489 llroundf NEW: ISO C 9x
1490 llroundl NEW: ISO C 9x
1491 log2 NEW: ISO C 9x
1492 log2f NEW: ISO C 9x
1493 log2l NEW: ISO C 9x
1494 lrint NEW: ISO C 9x
1495 lrintf NEW: ISO C 9x
1496 lrintl NEW: ISO C 9x
1497 lround NEW: ISO C 9x
1498 lroundf NEW: ISO C 9x
1499 lroundl NEW: ISO C 9x
1500 lseek64 NEW: LFS
1501 makecontext NEW: Unix98
1502 mempcpy NEW: GNU ext.
1503 mmap64 NEW: LFS
1504 moncontrol REMOVED
1505 modify_ldt NEW: kernel
1506 nan NEW: ISO C 9x
1507 nanf NEW: ISO C 9x
1508 nanl NEW: ISO C 9x
1509 nearbyint NEW: ISO C 9x
1510 nearbyintf NEW: ISO C 9x
1511 nearbyintl NEW: ISO C 9x
1512 netname2host NEW: Secure RPC
1513 netname2user NEW: Secure RPC
1514 nexttoward NEW: ISO C 9x
1515 nexttowardf NEW: ISO C 9x
1516 nexttowardl NEW: ISO C 9x
1517 nftw NEW: Unix98
1518 nftw64 NEW: LFS
1519 open64 NEW: LFS
1520 passwd2des NEW: Secure RPC
1521 pow10 NEW: GNU ext.
1522 pow10f NEW: GNU ext.
1523 pow10l NEW: GNU ext.
1524 pread NEW: Unix98
1525 pread64 NEW: LFS
1526 printf_size NEW: GNU ext.
1527 printf_size_info NEW: GNU ext.
1528 profil_counter REMOVED
1529 pthread_mutexattr_getkind_np REPLACED
1530 pthread_mutexattr_setkind_np REPLACED
1531 ptsname NEW: Unix98 PTY
1532 ptsname_r NEW: Unix98 PTY
1533 putc_locked REMOVED
1534 putchar_locked REMOVED
1535 putgrent NEW: GNU ext.
1536 putmsg NEW: STREAMS
1537 putpmsg NEW: STREAMS
1538 pututxline NEW: Unix98
1539 pwrite NEW: Unix98
1540 pwrite64 NEW: LFS
1541 readdir64 NEW: LFS
1542 readdir64_r NEW: LFS
1543 remquo NEW: ISO C 9x
1544 remquof NEW: ISO C 9x
1545 remquol NEW: ISO C 9x
1546 round NEW: ISO C 9x
1547 roundf NEW: ISO C 9x
1548 roundl NEW: ISO C 9x
1549 rtime NEW: GNU ext.
1550 scalbln NEW: ISO C 9x
1551 scalblnf NEW: ISO C 9x
1552 scalblnl NEW: ISO C 9x
1553 scandir64 NEW: LFS
1554 sendfile NEW: kernel
1555 setcontext NEW: Unix98
1556 setrlimit64 NEW: LFS
1557 setutxent NEW: Unix98
1558 sighold NEW: Unix98
1559 sigignore NEW: Unix98
1560 sigqueue NEW: POSIX.1b
1561 sigrelse NEW: Unix98
1562 sigset NEW: POSIX.1b
1563 sigtimedwait NEW: POSIX.1b
1564 sigwaitinfo NEW: POSIX.1b
1565 sincos NEW: GNU ext.
1566 sincosf NEW: GNU ext.
1567 sincosl NEW: GNU ext.
1568 statfs64 NEW: LFS
1569 statvfs NEW: Unix98
1570 statvfs64 NEW: LFS
1571 strcasestr NEW: GNU ext.
1572 strtoimax NEW: ISO C 9x
1573 strtoumax NEW: ISO C 9x
1574 strverscmp NEW: GNU ext.
1575 svcauthdes_stats NEW: Secure RPC
1576 svcunix_create NEW: sunrpc etx
1577 svcunixfd_create NEW: sunrpc ext
1578 swapcontext NEW: Unix98
1579 tcgetsid NEW: Unix98 PTY
1580 tdestroy NEW: GNU ext.
1581 tgamma NEW: ISO C 9x
1582 tgammaf NEW: ISO C 9x
1583 tgammal NEW: ISO C 9x
1584 tmpfile64 NEW: LFS
1585 trunc NEW: ISO C 9x
1586 truncate64 NEW: LFS
1587 truncf NEW: ISO C 9x
1588 truncl NEW: ISO C 9x
1589 umount2 NEW: kernel
1590 unlockpt NEW: Unix98 PTY
1591 updwtmpx NEW: Unix98
1592 user2netname NEW: Secure RPC
1593 utmpxname NEW: Unix98
1594 versionsort NEW: GNU ext.
1595 versionsort64 NEW: GNU ext.
1596 waitid NEW: Unix98
1597 wcscasecmp NEW: GNU ext.
1598 wcsncasecmp NEW: GNU ext.
1599 wcsnlen NEW: GNU ext.
1600 wcstoimax NEW: ISO C 9x
1601 wcstoll NEW: ISO C 9x
1602 wcstoull NEW: ISO C 9x
1603 wcstoumax NEW: ISO C 9x
1604 wcswcs NEW: Unix98
1605 wordexp NEW: POSIX.2
1606 wordfree NEW: POSIX.2
1607 write_profiling REMOVED
1608 xdecrypt NEW: Secure RPC
1609 xdr_authdes_cred NEW: Secure RPC
1610 xdr_authdes_verf NEW: Secure RPC
1611 xdr_cryptkeyarg NEW: Secure RPC
1612 xdr_cryptkeyarg2 NEW: Secure RPC
1613 xdr_cryptkeyres NEW: Secure RPC
1614 xdr_getcredres NEW: Secure RPC
1615 xdr_key_netstarg NEW: Secure RPC
1616 xdr_key_netstres NEW: Secure RPC
1617 xdr_keybuf NEW: Secure RPC
1618 xdr_keystatus NEW: Secure RPC
1619 xdr_netnamestr NEW: Secure RPC
1620 xdr_sizeof NEW: Secure RPC
1621 xdr_unixcred NEW: sunrpc ext
1622 xencrypt NEW: Secure RPC
1623 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1624 \f
1625 Version 2.0.6
1627 * more bug fixes
1629 \f
1630 Version 2.0.5
1632 * more bug fixes
1634 * inet_ntoa is thread-safe
1636 * updwtmp is moved from libutil to libc
1638 * rewrite of cbrt function
1640 * update of timezone data
1641 \f
1642 Version 2.0.4
1644 * more bug fixes
1645 \f
1646 Version 2.0.3
1648 * more bug fixes
1649 \f
1650 Version 2.0.2
1652 * more bug fixes
1654 * add atoll function
1656 * fix complex problems in Berkeley DB code
1658 * fix math functions
1659 \f
1660 Version 2.0.1
1662 * fixed lots of header problems (especially Linux/GNU specific)
1664 * dynamic loader preserves all registers
1666 * Roland McGrath provided support for handling of auxiliary objects in
1667 the ELF dynamic loader.
1669 * support for parallel builds is improved
1670 \f
1671 Version 2.0
1673 * GNU extensions are no longer declared by default. To enable them you
1674 must define the macro `_GNU_SOURCE' in your program or compile with
1675 `-D_GNU_SOURCE'.
1677 * The library has changed from using GNU ld symbol aliases to using weak
1678 symbols where available. The ELF object file format supports weak
1679 symbols; GNU ld also supports weak symbols in the a.out format. (There
1680 is also now support for other GNU ld extensions in ELF. Use the
1681 `--with-elf' option to configure to indicate you have ELF, and
1682 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1683 of many files which contained only symbol aliases, reducing the size of
1684 the source and the compiled library; many other files were renamed to
1685 less cryptic names previously occupied by the symbol alias files.
1686 There is a new header file <elf.h> for programs which operate on
1687 files in the ELF format.
1689 * Converted to Autoconf version 2, so `configure' has more options.
1690 Run `configure --help' to see the details.
1692 * The library can now be configured to build profiling, highly-optimized
1693 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1694 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1695 `configure' enable building these extra libraries. The shared library is
1696 built by default when using both ELF and GNU ld. When shared libraries
1697 are enabled, the new library `-ldl' is available for arbitrary run-time
1698 loading of shared objects; its interface is defined in <dlfcn.h>. The
1699 new header file <link.h> gives access to the internals of the run-time
1700 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1701 application of same name on other systems and it provides information
1702 about dynamically linked binaries.
1704 * The C library now provides the run-time support code for profiling
1705 executables compiled with `-pg'. Programs can control the profiling code
1706 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1707 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1708 the support for this file format was contributed by David Mosberger-Tang.
1710 * The math code has been replaced with a math library based on fdlibm from
1711 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1712 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1713 functions. The math functions now reside in a separate library, so
1714 programs using them will need to use `-lm' their linking commands.
1716 * John C. Bowman contributed optimized ix87 assembler inline functions.
1718 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1719 mechanism similar to that found in Solaris 2. This is now used for the
1720 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1721 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1722 file controls what services are used for each individual database. This
1723 works by loading shared libraries with names specified in `nsswitch.conf',
1724 so service modules can be changed or added at any time without even
1725 relinking any program. Currently there are the file, db, and NIS based
1726 NSS services available.
1728 * The new functions `strtoq' and `strtouq' parse integer values from
1729 strings, like `strtol' and `strtoul', but they return `long long int' and
1730 `unsigned long long int' values, respectively (64-bit quantities).
1732 * The new functions `strtof' and `strtold' parse floating-point values from
1733 strings, like `strtod', but they return `float' and `long double' values,
1734 respectively (on some machines `double' and `long double' are the same).
1736 * Ulrich Drepper has contributed new implementations of the floating-point
1737 printing and reading code used in the `printf' family of functions and
1738 `strtod', `strtof', and `strtold'. These new functions are perfectly
1739 accurate, and much faster than the old ones.
1741 * The implementation of the POSIX locale model was completely rewritten by
1742 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1743 to compile the POSIX locale definition.
1745 * The former dummy implementations of the strcoll and strxfrm function are
1746 now replaced by fully functional code contributed by Ulrich Drepper. The
1747 collation information comes from the POSIX locale definitions.
1749 * The new header <langinfo.h> defines an interface for accessing
1750 various locale-dependent data (using the locale chosen with `setlocale').
1752 * Ulrich Drepper has contributed a new suite of functions for operation on
1753 wide-character and multibyte-character strings, in <wchar.h>;
1754 and classification and case conversion of wide characters, in <wctype.h>.
1755 These new functions are conforming to the ISO C, Amendement 1 specification.
1757 * There is now a second implementation of the standard I/O library available.
1758 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1759 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1761 * You can now use positional parameter specifications in format strings
1762 for the `printf' and `scanf' families of functions. For example,
1763 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1764 ``Number 6, Mr Jones''. This is mainly useful when providing different
1765 format strings for different languages, whose grammars may dictate
1766 different orderings of the values being printed. To support this
1767 feature, the interface for `register_printf_handler' has changed; see
1768 the header file <printf.h> for details.
1770 * The `printf' and `scanf' families of functions now understand a new
1771 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1772 to group numbers as indicated by the locale; for `scanf' and friends, this
1773 says to accept as valid only a number with all the proper grouping
1774 separators in the right places. In the default "C" locale, numbers are
1775 not grouped; but locales for specific countries will define the usual
1776 conventions (i.e. separate thousands with `,' in the US locale).
1778 * The pgrp functions have been regularized, slightly incompatibly but much
1779 less confusingly. The core functions are now `getpgid' and `setpgid',
1780 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1781 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1782 provided for compatibility. There is no longer an incompatible `getpgrp'
1783 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1785 * The new header file <fts.h> and suite of functions simplify programs that
1786 operate on directory trees. This code comes from 4.4 BSD.
1788 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1789 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1790 NSS scheme used in glibc.
1792 * There is a new malloc debugging hook `__memalign_hook'.
1794 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1795 `unsigned int' in <sys/types.h>. These are for compatibility only and
1796 their use is discouraged.
1798 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1799 done differently, so that it works even without GNU ld.
1801 * New function `euidaccess' checks allowed access to a file like `access',
1802 but using the effective IDs instead of the real IDs.
1804 * The time zone data files have been updated for the latest and greatest
1805 local time conventions of the countries of the world.
1807 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1808 see <dirent.h>.
1810 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1811 for formatting floating-point numbers. They are provided only for
1812 compatibility; new programs should use `sprintf' instead. There are
1813 also equivalent function for the `long double' floating-point type and
1814 all functions also exist in a reentrant form.
1816 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1817 functions for maintaining the login-record files (primarily of use to
1818 system programs such as `login'), and convenient functions for
1819 allocating and initializing a pseudo-terminal (pty) device.
1821 * Ulrich Drepper has contributed new support for System V style
1822 shared memory and IPC on systems that support it.
1824 * Ulrich Drepper has contributed several miscellaneous new functions found
1825 in System V: The `hsearch' family of functions provide an effective
1826 implementation of hash tables; `a64l' and `l64a' provide a very simple
1827 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1828 number generator.
1830 * Ulrich Drepper has contributed new reentrant counterparts for the
1831 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1833 * Ulrich Drepper has contributed new, highly-optimized versions of several
1834 string functions for the i486/Pentium family of processors.
1836 * Ulrich Drepper has updated the Linux-specific code, based largely
1837 on work done in Hongjiu Lu's version of GNU libc for Linux.
1838 The GNU library now supports Linux versions 2.0.10 and later,
1839 using the ELF object file format (i[3456]86-*-linux).
1841 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1843 * David Mosberger-Tang and Richard Henderson have ported the C library
1844 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1845 dynamic linking support for ELF/Alpha.
1847 * Richard Henderson contributed several Alpha optimized assembler function
1848 for arithmetic and string handling.
1850 * Ulrich Drepper has contributed a new set of message catalog functions to
1851 support multiple languages using the <libintl.h> interface, for use with
1852 his new package GNU gettext. Translation volunteers have contributed
1853 catalogs of the library's messages in Spanish, German, and Korean.
1855 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1856 program and the `catgets' function for reading the catalog files it
1857 creates. (The <libintl.h> interface is preferred; we include the
1858 <nl_types.h> interface using `catgets' only for source compatibility with
1859 programs already written to use it.)
1861 * New header file <values.h> gives SVID-compatible names for <limits.h>
1862 constants.
1864 * Various new macros, declarations, and small header files for compatibility
1865 with 4.4 BSD.
1867 * New function `group_member' is a convenient way to check if a process has
1868 a given effective group ID.
1870 * When using GCC 2.7 and later, the socket functions are now declared in a
1871 special way so that passing an argument of type `struct sockaddr_in *',
1872 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1873 `struct sockaddr *' type, does not generate a type-clash warning.
1875 * New function `error' declared in header file <error.h> is a convenient
1876 function for printing error messages and optionally exiting; this is the
1877 canonical function used in GNU programs. The new functions `err', `warn',
1878 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1879 doing the same thing.
1881 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1882 POSIX.2 `glob' function to do ~ and {...} expansion.
1884 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1885 `clearenv' which is used in POSIX.9 is also available.
1887 * New function `getsid' returns session ID number on systems that support it.
1889 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1890 files <db.h> and <mpool.h> provide a rich set of functions for several
1891 types of simple databases stored in memory and in files, and <ndbm.h> is
1892 an old `ndbm'-compatible interface using the `db' functions. Link with
1893 `-ldb' to get these functions.
1895 * New macro `strdupa' copies a string like `strdup', but uses local stack
1896 space from `alloca' instead of dynamic heap space from `malloc'.
1898 * New function `strnlen' is like `strlen' but searches only a given maximum
1899 number of characters for the null terminator. `stpncpy', `strndup' and
1900 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1901 function.
1903 * New function `statfs' in header <sys/statfs.h>.
1905 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1906 provide convenient functions for operating on blocks of null-terminated
1907 strings.
1909 * A new suite of functions in <utmp.h> handle all the details of reading
1910 and writing the utmp file.
1912 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1913 Thorsten Kukuk.
1915 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1916 completely POSIX compliant and also implemented the extended functionality
1917 to handle alternate digit representation and alternate era date formats.
1919 * Ulrich Drepper provided an implementation of the `strptime' function
1920 defined in XPG4.2 which transforms a string into a `struct tm' value.
1922 * Paul Eggert provided the tzselect shell script as part of the timezone
1923 code. The shell script makes it easy to select the correct timezone
1924 specification.
1926 * The implementation of the malloc family of functions is completely replaced
1927 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1928 The implementation uses the mmap function (if available) and it is
1929 optimized for the use in multi threaded programs.
1931 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1932 functions. This new functionality is usable by specifying a special
1933 salt string and it is compatible with implementation on *BSD systems.
1935 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1936 `getsubopt' to handle second level command line options, `bsd_signal'
1937 to access BSD style `signal' functionality, the obsolete `regexp' style
1938 expression matcher.
1940 * the `lchown' function is available on system which support this
1941 functionality.
1943 * The implementation of the shadow password handling function was contributed
1944 by Ulrich Drepper.
1946 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1948 * POSIX.1g support was added. The <sys/select.h> header is available,
1949 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1950 implementation of `getaddrinfo'.
1951 \f
1952 Version 1.09
1954 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1956 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1957 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1959 * The new function `daemon' from 4.4 BSD is useful for server programs that
1960 want to put themselves in the background.
1962 * Joel Sherrill has contributed support for several standalone boards that
1963 run without an operating system.
1965 * `printf', `scanf' and friends now accept a `q' type modifier for long
1966 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1968 * All of the code taken from BSD (notably most of the math and networking
1969 routines) has been updated from the BSD 4.4-Lite release.
1971 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1973 * The new functions `getdomainname' and `setdomainname' fetch or change the
1974 YP/NIS domain name. These are system calls which exist on systems which
1975 have YP (aka NIS).
1977 * The time zone data files have been updated for the latest international
1978 conventions.
1980 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1981 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1982 \f
1983 Version 1.08
1985 * The C library now includes support for Sun RPC, from Sun's free
1986 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1987 are included. (There is still no support for YP.)
1989 * Tom Quinn has contributed a port of the C library to SGI machines running
1990 Irix 4 (mips-sgi-irix4).
1992 * The new `lockf' function is a simplified interface to the locking
1993 facilities of `fcntl', included for compatibility.
1995 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1997 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1999 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2000 compatibility.
2002 * The error message printed by `assert' for a failed assertion now includes
2003 the name of the program (if using GNU ld) and the name of the calling
2004 function (with versions of GCC that support this).
2006 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2008 * The library now includes the <sys/mman.h> header file and memory
2009 management functions `mmap', `munmap', `mprotect', `msync', and
2010 `madvise', on systems that support those facilities.
2012 * The interface for `mcheck' has changed slightly: the function called to
2013 abort the program when an allocation inconsistency is detected now takes
2014 an argument that indicates the type of failure. The new function
2015 `mprobe' lets you request a consistency check for a particular block at
2016 any time (checks are normally done only when you call `free' or `realloc'
2017 on a block).
2019 * It is now possible to easily cross-compile the C library, building on one
2020 system a library to run on another machine and/or operating system. All
2021 you need to do is set the variable `HOST_CC' in `configparms' to the
2022 native compiler for programs to run on the machine you are building on (a
2023 few generator programs are used on Unix systems); set `CC' to the
2024 cross-compiler.
2026 * The new function `fexecve' (only implemented on the GNU system) executes
2027 a program file given a file descriptor already open on the file.
2028 \f
2029 Version 1.07
2031 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2032 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2034 * You can set the variable `libprefix' in `configparms' to specify a prefix
2035 to be prepended to installed library files; this makes it easy to install
2036 the GNU C library to be linked as `-lgnuc' or whatever.
2038 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2039 copies a limited number of characters from a string, and returns the
2040 address of the last character written.
2042 * You no longer need to check for whether the installed `stddef.h' is
2043 compatible with the GNU C library. configure now checks for you.
2045 * You can now define a per-stream `fileno' function to convert the
2046 stream's cookie into an integral file descriptor.
2048 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2049 allocates zero bytes of storage, and returns a unique pointer which
2050 you can pass to `realloc' or `free'. The behavior is undefined if
2051 you dereference this pointer.
2053 * The C library now runs on Sony NEWS m68k machines running either
2054 NewsOS 3 or NewsOS 4.
2056 * The new `syscall' function is a system-dependent primitive function
2057 for invoking system calls. It has the canonical behavior on Unix
2058 systems, including unreliable return values for some calls (such as
2059 `pipe', `fork' and `getppid').
2061 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2062 to `EAGAIN', which is the preferred name. On systems whose kernels
2063 use two distinct codes, the C library now translates EWOULDBLOCK to
2064 EAGAIN in every system call function.
2065 \f
2066 Version 1.06
2068 * The GNU C Library Reference Manual is now distributed with the library.
2069 `make dvi' will produce a DVI file of the printed manual.
2070 `make info' will produce Info files that you can read on line using C-h i
2071 in Emacs or the `info' program.
2072 Please send comments on the manual to bug-glibc-manual@gnu.org.
2074 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2076 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2078 * Jason Merrill has contributed a port to the Sequent Symmetry running
2079 Dynix version 3 (i386-sequent-dynix).
2081 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2082 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2084 * New function `memory_warnings' lets you arrange to get warnings when
2085 malloc is running out of memory to allocate, like Emacs gives you.
2087 * The C library now contains the relocating allocator used in Emacs 19 for
2088 its editing buffers. This allocator (ralloc) minimizes allocation
2089 overhead and fragmentation by moving allocated regions around whenever it
2090 needs to. You always refer to a ralloc'd region with a "handle" (a
2091 pointer to a pointer--an object of type `void **').
2093 * There is a new `printf' format: `%m' gives you the string corresponding
2094 to the error code in `errno'.
2096 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2097 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2098 pass, the `a' modifier says to fill in a `char **' you pass with a
2099 malloc'd string.
2101 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2102 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2103 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2105 * `mkstemp' is a traditional Unix function to atomically create and open a
2106 uniquely-named temporary file.
2107 \f
2108 Version 1.05
2110 * The standard location for the file that says what the local timezone is
2111 has changed again. It is now `/usr/local/etc/localtime' (or more
2112 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2114 * The distribution no longer contains any files with names longer than 14
2115 characters.
2117 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2118 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2120 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2121 \f
2122 Version 1.04
2124 * The configuration process has changed quite a bit. The `configure'
2125 script is now used just like the configuration scripts for other GNU
2126 packages. The `sysdeps' directory hierarchy is much rearranged.
2127 The file `INSTALL' explains the new scheme in detail.
2129 * The header files no longer need to be processed into ANSI C and
2130 traditional C versions. There is just one set of files to install, and
2131 it will work with ANSI or old C compilers (including `gcc -traditional').
2133 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2134 MIPS DECStation running Ultrix 4.
2136 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2137 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2138 made itself into a shared library.
2140 * Yet further improved support for the i386, running 4.3 BSD-like systems
2141 (such as Mach 3 with the Unix single-server), or System V.
2143 * New function `strncasecmp' to do case-insensitive string comparison
2144 with limited length.
2146 * New function `strsep' is a reentrant alternative to `strtok'.
2148 * New functions `scandir' and `alphasort' for searching directories.
2150 * New function `setenv' is a better interface to `putenv'.
2152 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2153 function for traversing a directory tree.
2155 * The GNU obstack package is now also part of the C library.
2156 The new function `open_obstack_stream' creates a stdio stream that
2157 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2158 formatted output directly to an obstack.
2160 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2161 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2163 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2165 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2166 things to your strings.
2168 * There are some new test programs: test-fseek, testmb, and testrand.
2170 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2171 These ports are not finished, but are a good starting place for really
2172 supporting those systems.
2174 * `/etc/localtime' is now the standard location for the file that says what
2175 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2176 This follows the general principle that `/etc' is the place for all local
2177 configuration files.
2179 * The C library header files now use `extern "C"' when used by the C++
2180 compiler, so the C library should now work with C++ code.
2182 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2183 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2184 in <strings.h>.)
2186 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2187 function which uses the `merge sort' algorithm, and is said to be
2188 significantly faster than the old GNU `qsort' function. Merge sort is
2189 now the standard `qsort' function. The new algorithm can require a lot
2190 of temporary storage; so, the old sorting function is called when the
2191 required storage is not available.
2193 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2194 provides the Unix `crypt' function, plus some other entry points.
2196 * The code and header files taken from 4.4 BSD have been updated with the
2197 latest files released from Berkeley.
2198 \f
2199 ----------------------------------------------------------------------
2200 Copyright information:
2202 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2204 Permission is granted to anyone to make or distribute verbatim copies
2205 of this document as received, in any medium, provided that the
2206 copyright notice and this permission notice are preserved,
2207 thus giving the recipient permission to redistribute in turn.
2209 Permission is granted to distribute modified versions
2210 of this document, or of portions of it,
2211 under the above conditions, provided also that they
2212 carry prominent notices stating who last changed them.
2213 \f
2214 Local variables:
2215 version-control: never
2216 fill-column: 76
2217 End: