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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 13951, 14200, 14317, 14327, 14496, 14964, 14981, 14982, 14985, 14994,
13 14996, 15003, 15020, 15023, 15036, 15062.
15 \f
16 Version 2.17
18 * The following bugs are resolved with this release:
20 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
21 9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
22 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
23 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
24 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
25 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298, 14303,
26 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417,
27 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519,
28 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576,
29 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648,
30 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743,
31 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805,
32 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835,
33 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872, 14879,
34 14889, 14893, 14898, 14914.
36 * Optimization of memcpy for MIPS.
38 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
39 EMFILE has been fixed (Bugzilla #14889).
41 * The add-on ports collection is now distributed in the "ports" subdirectory
42 of the main GNU C Library distribution, rather than separately.
44 * Port to ARM AArch64 contributed by Linaro.
46 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
47 Optimized versions of memcpy, memset, and memcmp added for System z10 and
48 zEnterprise z196.
49 Implemented by Andreas Krebbel.
51 * The new function secure_getenv allows secure access to the environment,
52 returning NULL if running in a SUID/SGID process. This function replaces
53 the internal function __secure_getenv.
55 * SystemTap static probes have been added into the dynamic linker.
56 Implemented by Gary Benson.
58 * Optimizations of string functions strstr, strcasestr and memmem.
59 Implemented by Maxim Kuvyrkov.
61 * The minimum Linux kernel version that this version of the GNU C Library
62 can be used with is 2.6.16.
64 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
65 powerpc POWER7. Implemented by Will Schmidt.
67 * New configure option --disable-nscd builds the C library such that it
68 never attempts to contact the Name Service Caching Daemon (nscd).
69 New configure option --disable-build-nscd avoids building nscd itself;
70 this is the default if --disable-nscd is used.
72 * Improved support for cross-compilation, including cross-testing and
73 bootstrap builds without a previously built glibc.
75 * Several testsuite tests are now able to test multiple IFUNC variants of an
76 interface, rather than just testing the one that would be chooen by
77 default.
79 * New configure options --with-bugurl and --with-pkgversion, for
80 distributors to use to embed their bug-reporting and package version
81 information in --help and --version output.
83 * The ttyname and ttyname_r functions on Linux now fall back to searching for
84 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
85 allows creation of chroots without the procfs mounted on /proc.
87 * The `crypt' function now fails if passed salt bytes that violate the
88 specification for those values. On Linux, the `crypt' function will
89 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
90 enabled, and fail on encrypted strings using the MD5 or DES algorithm
91 when the mode is enabled.
93 * The `clock_*' suite of functions (declared in <time.h>) is now available
94 directly in the main C library. Previously it was necessary to link with
95 -lrt to use these functions. This change has the effect that a
96 single-threaded program that uses a function such as `clock_gettime' (and
97 is not linked with -lrt) will no longer implicitly load the pthreads
98 library at runtime and so will not suffer the overheads associated with
99 multi-thread support in other code such as the C++ runtime library.
101 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
102 sat_IN, and szl_PL.
103 \f
104 Version 2.16
106 * The following bugs are resolved with this release:
108 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
109 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
110 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
111 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
112 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
113 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
114 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
115 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
116 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
117 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
118 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
119 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
120 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
121 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
122 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
123 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
124 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
125 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
126 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
127 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
128 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
129 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
130 14278.
132 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
133 configuring glibc with:
134 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
135 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
136 Implemented by H.J. Lu.
138 * ISO C11 support:
140 + define static_assert
142 + do not declare gets
144 + declare at_quick_exit and quick_exit also for ISO C11
146 + aligned_alloc. NB: The code is deliberately allows the size parameter
147 to not be a multiple of the alignment. This is a moronic requirement
148 in the standard but it is only a requirement on the caller, not the
149 implementation.
151 + timespec_get added
153 + uchar.h support added
155 + CMPLX, CMPLXF, CMPLXL added
157 Implemented by Ulrich Drepper.
159 * Support for the IA-64 has been moved to ports.
161 * Remove support for anything but ELF binary format
163 * Checking versions of poll, ppoll added.
164 Implemented by Ulrich Drepper.
166 * More generic and 64-bit performance optimizations to math functions.
167 Implemented by Ulrich Drepper.
169 * New configure option --enable-obsolete-rpc makes the deprecated RPC
170 headers and functions available at compile time as they were before
171 version 2.14. This option will be removed at some time in the future
172 after the TI-RPC library becomes fully sufficient for the needs of
173 existing applications.
175 * Compatibility code for Linux kernel versions before 2.4 has been removed.
176 Note that glibc is not expected to work with any Linux kernel version
177 before 2.6.
179 * New header <sys/auxv.h> and function getauxval allowing easy access to
180 the AT_* key-value pairs passed from the Linux kernel. The header also
181 defines the HWCAP_* bits associated with the AT_HWCAP key.
183 * New locales: mag_IN
185 * New configure option --enable-systemtap builds SystemTap static probes
186 into libc for setjmp and longjmp and into libpthread for various operations.
187 So far the setjmp/longjmp probes and some of the libpthread probes are
188 provided only for i*86 and x86_64.
189 Implemented by Roland McGrath and Rayson Ho.
191 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
193 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
194 and Will Schmidt.
196 * More optimized functions for SPARC. Implemented by David S. Miller.
198 * Improved support for cross-compilation, especially bootstrap builds
199 without a previously built glibc.
201 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
202 Chris Metcalf from Tilera.
204 * Support for the old ARM ABI has been removed from ports. Only the EABI is
205 now supported for ARM processors.
207 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
208 as the name of the dynamic linker, to distinguish it from the
209 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
211 * Support for CRIS has been removed from ports.
213 * A new class of installed header has been documented for low-level
214 platform-specific functionality. PowerPC added the first instance with a
215 function to provide time base register access. Contributed by Tulio
216 Magno Quites Machado Filho.
218 * ix86 configurations now install header files that are consistent with
219 what x86-64 configurations install. These same header files can be used
220 for -m32, -m64, or -mx32 builds.
221 Contributed by H.J. Lu.
223 * Math library bug fixes. A thorough audit of all open math library bugs was
224 conducted by Joseph Myers. Significant progress was made on many math
225 library bugs resulting in more accurate exceptions and function results.
226 Many thanks to all those that contributed including Andreas Jaeger for his
227 patch review and work on the x87 trigonometric instruction issues.
229 * Timezone data is no longer installed. Timezone-related binaries and scripts
230 will continue to be installed. Users should obtain their timezone data from
231 their distribution provider or from the tzdata package at
232 <ftp://munnari.oz.au/pub/>.
233 \f
234 Version 2.15
236 * The following bugs are resolved with this release:
238 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
239 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
240 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
241 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
242 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
243 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
244 13484, 13506, 13515, 13523, 13524, 13538, 13540
246 * New program pldd to list loaded object of a process
247 Implemented by Ulrich Drepper.
249 * Add nss_db support back to glibc. No more dependency on Berkeley db
250 and support for initgroups lookups.
251 Implemented by Ulrich Drepper.
253 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
254 Contributed by HJ Lu.
256 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
257 Contributed by HJ Lu.
259 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
260 on x86-32 and x86-64.
261 Contributed by Liubov Dmitrieva.
263 * Optimized strchr and strrchr for SSE on x86-32.
264 Contributed by Liubov Dmitrieva.
266 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
267 for x86-64 and x86-32.
268 Contributed by Liubov Dmitrieva.
270 * New interfaces: scandirat, scandirat64
271 Implemented by Ulrich Drepper.
273 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
274 Implemented by Ulrich Drepper.
276 * nscd now also caches the netgroup database.
277 Implemented by Ulrich Drepper.
279 * Integrate libm with gcc's -ffinite-math-only option.
280 Implemented by Ulrich Drepper.
282 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
283 to math functions. Implemented by Ulrich Drepper.
285 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
286 Implemented by Ulrich Drepper.
288 * New Linux interfaces: process_vm_readv, process_vm_writev
290 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
291 Implemented by Ulrich Drepper.
293 * Optimized nearbyint and strcasecmp for PPC.
294 Implemented by Adhemerval Zanella.
296 * New locales: bho_IN, unm_US, es_CU, ta_LK
297 \f
298 Version 2.14
300 * The following bugs are resolved with this release:
302 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
303 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
304 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
305 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
306 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
307 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
308 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
309 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
310 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
311 12795, 12811, 12813, 12814, 12841
313 * The RPC implementation in libc is obsoleted. Old programs keep working
314 but new programs cannot be linked with the routines in libc anymore.
315 Programs in need of RPC functionality must be linked against TI-RPC.
316 The TI-RPC implementation is IPv6 enabled and there are other benefits.
318 Visible changes of this change include (obviously) the inability to link
319 programs using RPC functions without referencing the TI-RPC library and the
320 removal of the RPC headers from the glibc headers.
321 Implemented by Ulrich Drepper.
323 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
324 syncfs, setns, sendmmsg
326 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
327 yue_HK, lij_IT, mhr_RU
329 * New encodings: CP770, CP771, CP772, CP773, CP774
331 * New program sotruss to trace calls through PLTs
332 Implemented by Ulrich Drepper.
334 * The malloc hook implementation is marked deprecated and will be removed
335 from the default implementation in the next version. The design never
336 worked ever since the introduction of threads. Even programs which do
337 not create threads themselves can use multiple threads created internally.
338 \f
339 Version 2.13
341 * The following bugs are resolved with this release:
343 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
344 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
345 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
346 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
347 12378, 12394, 12397
349 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
351 * POWER7 optimizations: memset, memcmp, strncmp
353 * New optimized string functions for x86-64: strnlen (SSE2),
354 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
355 Implemented by Ulrich Drepper.
356 \f
357 Version 2.12
359 * The following bugs are resolved with this release:
361 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
362 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
363 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
364 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
365 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
366 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
367 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
368 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
370 * New interfaces: pthread_getname_np, pthread_setname_np
372 * New Linux interface: recvmmsg
374 * STT_GNU_IFUNC implemented for Sparc by David Miller.
376 * The dynamic linker now recognizes supported ABI versions from the
377 EI_ABIVERSION field in the ELF header.
378 Implemented by Ulrich Drepper.
380 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
381 will not be used to fill in password fields in the passwd.byname replies.
382 Instead it is used to synthesize the shadow.byname table, should it be
383 missing. This is a useful mode in some installations involving Solaris.
384 Implemented by Ulrich Drepper.
386 * New locales: kok_IN, sq_MK, cv_RU
387 \f
388 Version 2.11
390 * The following bugs are resolved with this release:
392 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
393 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
394 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
395 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
396 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
397 10789, 10817, 10823, 10840, 10847
399 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
400 mkostemps64
401 Implemented by Ulrich Drepper.
403 * Checking version of longjmp added that fails if an uninitialized stack
404 frame would be created. Implemented by Ulrich Drepper.
406 * STT_GNU_IFUNC is now supported in static executables.
407 Implemented by H.J. Lu.
409 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
411 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
412 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
413 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
414 Contributed by H.J. Lu.
416 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
417 Implemented by Ulrich Drepper.
419 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
420 strstr, strcasestr.
421 Contributed by H.J. Lu.
423 * Support for fma instruction in AVX on x86-64.
424 Implemented by H.J. Lu and Ulrich Drepper.
426 * AVX support in x86-64 auditing support in ld.so.
427 Implemented by H.J. Lu.
429 * STB_GNU_UNIQUE support added.
430 Implemented by Ulrich Drepper.
432 * Implement second fallback mode for optimized DNS lookup for even more
433 broken environments. If two requests from the same port are not
434 handled correctly close the socket and open a new one before sending
435 the second request. The 'single-request-reopen' option in /etc/resolv.conf
436 can be used to select this mode right away, instead of rediscovering the
437 necessity is every process again.
438 Implemented by Ulrich Drepper.
440 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
441 Implemented by Adam Tkac.
443 * Optimized iconv conversions for S390x.
444 Implemented by Andreas Krebbel.
446 * Using condvars with PI mutexes is now more efficient due to kernel
447 support for requeueing to PI futexes. NPTL support added for x86-64.
448 Implemented by Ulrich Drepper.
450 * New locales: ps_AF, my_MM
451 \f
452 Version 2.10
454 * The following bugs are resolved with this release:
456 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
457 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
458 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
459 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
460 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
462 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
463 Implemented by Ulrich Drepper.
465 * New Linux interfaces: accept4, fallocate, fallocate64.
466 Implemented by Ulrich Drepper.
468 * Correct declarations of string function when used in C++ code. This
469 could lead to compile errors for invalid C++ code.
471 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
472 now in POSIX.
474 * New POSIX 2008 interface: psiginfo
475 Implemented by Ulrich Drepper.
477 * New ISO C++1x interfaces: quick_exit, at_quick_exit
478 Implemented by Ulrich Drepper.
480 * Support for selecting between multiple function definitions at runtime
481 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
483 * The libcrypt library can now use the hash function implementations in
484 NSS. Implemented by Ulrich Drepper.
486 * The malloc implementation can be compiled to be less memory efficient
487 but higher performing in multi-threaded programs.
488 Implemented by Ulrich Drepper.
490 * New locales: nan_TW@latin, ks_IN
492 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
493 Implemented by Ulrich Drepper.
495 * Extended printf hook support. It is possible to use user-defined types
496 and extend existing format specifiers.
497 Implemented by Ulrich Drepper.
499 * Handling for group shadow files has been added.
500 Implemented by Ulrich Drepper.
502 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
503 servers (the case, e.g., for some people using the built-in DNS
504 server in ADSL modems/routers). There is a once-per-process timeout
505 in case of a broken server. To avoid it, users can run nscd or put
506 'options single-request' in /etc/resolv.conf.
507 Implemented by Ulrich Drepper.
508 \f
509 Version 2.9
511 * The following bugs are resolved with this release:
513 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
514 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
515 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
516 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
517 6968, 6974, 6980, 6995, 7008, 7009, 7029
519 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
520 up at the same time. Implemented by Ulrich Drepper.
522 * TLS descriptors for LD and GD on x86 and x86-64.
523 Implemented by Alexandre Oliva.
525 * getaddrinfo now handles DCCP and UDPlite.
526 Implemented by Ulrich Drepper.
528 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
529 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
530 Implemented by Ulrich Drepper.
532 * New implementation of memmem, strstr, and strcasestr which is O(n).
533 Implemented by Eric Blake.
535 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
537 * Implement "e" option for popen to open file descriptor with the
538 close-on-exec flag set. Implemented by Ulrich Drepper.
540 * Implement "b" mode for fmemopen. In this mode writes writes don't
541 implicitly add a NUL byte and seeks from the end of the buffer really
542 use the buffer end, not the string length as the basis.
543 Implemented by Ulrich Drepper.
545 * Many functions, exported and internal, now atomically set the close-on-exec
546 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
548 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
549 Sinhala)
550 Implemented by Pravin Satpute.
552 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
553 \f
554 Version 2.8
556 * The following bugs are resolved with this release:
558 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
559 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
560 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
561 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
562 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
563 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
564 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
566 * New locales: bo_CN, bo_IN, shs_CA.
568 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
570 * Sorting rules for some Indian languages (Devanagari and Gujarati).
571 Implemented by Pravin Satpute.
573 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
575 * nscd caches now all timeouts for DNS entries
576 Implemented by Ulrich Drepper.
578 * nscd is more efficient and wakes up less often.
579 Implemented by Ulrich Drepper.
581 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
582 vdprintf, and obstack_vprintf.
583 Implemented by Jakub Jelinek.
585 * Faster memset for x86-64.
586 Implemented by Harsha Jagasia and H.J. Lu.
588 * Faster memcpy on x86.
589 Implemented by Ulrich Drepper.
591 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
592 Implemented by Ulrich Drepper.
594 * Faster sqrt and sqrtf implemention for some PPC variants.
595 Implemented by Steven Munroe.
596 \f
597 Version 2.7
599 * The following bugs are resolved with this release:
601 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
602 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
603 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
604 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
605 5071, 5103, 5104, 5112, 5113, 5184, 5186
607 * More checking functions: fread, fread_unlocked, open*, mq_open.
608 Implemented by Jakub Jelinek and Ulrich Drepper.
610 * Extend fortification to C++. Implemented by Jakub Jelinek.
612 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
613 by not recognizing 'a' as a modifier when those specs are requested.
614 Implemented by Jakub Jelinek.
616 * PPC optimizations to math and string functions.
617 Implemented by Steven Munroe.
619 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
620 options to be passed. Implemented by Ulrich Drepper.
622 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
624 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
625 Implemented by Ulrich Drepper.
627 * Handle private futexes in the NPTL implementation.
628 Implemented by Jakub Jelinek and Ulrich Drepper.
630 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
631 Implemented by Roland McGrath and Ulrich Drepper.
633 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
635 * SHA-256 and SHA-512 based password encryption.
636 Implemented by Ulrich Drepper.
638 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
639 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
640 yo_NG.
642 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
643 Implemented by Ulrich Drepper.
644 \f
645 Version 2.6
647 * The following bugs are resolved with this release:
649 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
650 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
651 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
652 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
653 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
654 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
655 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
656 4702, 4858
658 * New Linux interfaces: epoll_pwait, sched_getcpu.
660 * New generic interfaces: strerror_l.
662 * nscd can now cache the services database. Implemented by Ulrich Drepper.
663 \f
664 Version 2.5
666 * The following bugs are resolved with this release:
668 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
669 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
670 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
671 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
672 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
673 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
674 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
675 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
676 3225, 3251, 3252, 3253, 3273
678 * For Linux, the sorting of addresses returned by getaddrinfo now also
679 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
680 Implemented by Ulrich Drepper.
682 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
683 Implemented by Ulrich Drepper.
685 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
687 * New iconv module for MIK. Contributed by Alexander Shopov.
689 * For sites with broken group and/or passwd database, the auto-propagate
690 option of nscd can prevent creating ID lookup entries from the results
691 of a name lookup and vice versa. This usually is no problem but some
692 site might have problems with the default behavior.
693 Implemented by Ulrich Drepper.
695 * Iterating over entire database in NIS can be slow. With the
696 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
697 to trade time for memory. The entire database will be read at once.
698 Implemented by Ulrich Drepper.
700 * The interfaces introduced in RFC 3542 have been implemented by
701 Ulrich Drepper.
703 * Support for the new ELF hash table format was added by Ulrich Drepper.
705 * Support for priority inheritance mutexes added by Jakub Jelinek and
706 Ulrich Drepper.
708 * Support for priority protected mutexes added by Jakub Jelinek.
710 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
711 or_IN, csb_PL, fy_NL, sr_ME.
712 \f
713 Version 2.4
715 * More overflow detection functions.
717 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
718 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
720 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
721 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
722 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
723 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
724 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
725 by Masahide Washizawa.
727 * It is now possible to install audit libraries for the dynamic linker using
728 LD_AUDIT. Implemented by Ulrich Drepper.
730 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
731 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
732 For a libc and libpthread that works well on Linux 2.4 kernels, we
733 recommend using the stable 2.3 branch.
735 * The new function open_wmemstream acts like open_memstream,
736 but uses a wchar_t wide character buffer.
738 * The new function ppoll is an improved version of poll, similar to pselect.
740 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
741 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
742 renameat, unlinkat, linkat, symlinkat, readlinkat.
744 * New Linux kernel system calls: unshare,
745 inotify_init, inotify_add_watch, inotify_rm_watch.
747 * The euidaccess function is now also known by the alias eaccess,
748 for compatibility with some other systems.
750 * Timezone data updated to 2006b version.
751 \f
752 Version 2.3.6
754 * The following bugs are resolved with this release:
756 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
757 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
758 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
759 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
760 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
761 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
763 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
765 * As of this release, GCC 4 can be used to compile the C Library.
767 * Timezone data updated to 2005m version.
768 \f
769 Version 2.3.5
771 * The following bugs are resolved with this release:
773 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
774 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
775 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
776 777, 787, 821, 822, 823, 825
778 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
779 \f
780 Version 2.3.4
782 * Support for RFC 3678. Real implementations exist only for Linux so far.
783 Implemented by Ulrich Drepper.
785 * nscd can now cache entries persistently. Expiring entries are reloaded.
786 For speedups the cache can be shared in memory with client processes.
787 Implemented by Ulrich Drepper.
789 * nscd can now perform SELinux checks.
790 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
792 * getaddrinfo queries are now cached. Canonical name lookup is performed
793 efficiently.
794 Implemented by Ulrich Drepper.
796 * The nothrow function attribute is used when headers are used by gcc when
797 compiling C code. This can avoid significant amounts of exception
798 handling data.
800 * The malloc functions perform more error checking and are stricter when
801 it comes to reacting on errors. The default action is to terminate
802 the process after showing an error message. Implemented by Ulrich Drepper.
804 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
805 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
807 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
808 namespaces using the new function dlmopen(). This feature is of course,
809 like most other dynamic loading functionality, not available in statically
810 linked applications. Implemented by Ulrich Drepper.
812 * Low-overhead boundary checking variants of string and some stdio functions
813 were added. These are to be used in conjunction with a gcc patch by
814 Jakub Jelinek which adds calls to these functions if possible.
815 Implemented by Jakub Jelinek and Ulrich Drepper.
817 * Old code for several operating systems and machine architectures that
818 have not been in working condition in a long time have been removed from
819 the main source tree maintained by the GNU C Library's maintainers.
820 These files are now reside in the separate `ports' source module
821 that is usable as an add-on when building the library.
822 \f
823 Version 2.3.3
825 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
826 interrogate the dynamic linker, compatible with the Solaris interface.
828 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
829 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
831 * getifaddrs now uses the netlink interface on Linux to get its information.
832 Implemented by Thorsten Kukuk.
834 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
835 Implemented by Ulrich Drepper.
837 * support for non-executable stacks on x86 has been added. Changes mostly
838 by Roland McGrath.
840 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
841 and Ulrich Drepper.
843 * getaddrinfo now performs destination address selection according to
844 RFC 3484.
845 \f
846 Version 2.3.2
848 * Thread-safe interfaces for many functions that access locale data
849 were added in version 2.3, but these features were omitted from NEWS.
850 Many functions have variants with an `_l' suffix that take a `locale_t'
851 object as a parameter rather than consulting the current locale.
852 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
853 create and maintain `locale_t' objects. Additionally, the new function
854 `uselocale' sets "the current locale" (as used by functions not so
855 parameterized) set for an individual thread. These features were added
856 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
858 * The functions getresuid, getresgid, setresuid, and setresgid, which
859 have long been available on Linux, are now declared in <unistd.h>
860 and are now also available on the Hurd.
862 * ELF thread-local storage support (TLS) now works on x86-64.
864 * The new dynamic string token $LIB is expanded in shared library names.
865 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
867 * Aldy Hernandez contributed complete software floating point support for
868 PowerPC machines with no FPU.
870 * fexecve is implemented on Linux.
872 * The `btowc' function should work at least twice as fast due to
873 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
875 * With approriate thread add-ons cancelable functions are now implemented
876 in libc.so as well. No need to call the function in libpthread. This
877 change allowed to finally disable the incorrect and expensive handling
878 of weak definition in ld.so.
880 * Yet more PLT entries in libc.so have been removed. We finally arrived
881 at the bare minimum. Startup times improved appropriately.
883 * Support for the new Linux/x86 system call interface was added. The
884 AT_SYSINFO auxiliary vector entry is recognized and handled.
885 \f
886 Version 2.3
888 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
889 charsets.
891 * iconv (the program and the interface) now accepts empty names (excluding
892 options like //TRANSLIT) to mean "use charset of current locale".
894 * localedef can now transliterate characters in strings which are not in
895 the provided charmap. The information from the input locale is used.
897 * Prelinking support was added for ELF targets. This requires additional
898 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
900 * Read-only stdio streams now use mmap to speed up operation by eliminating
901 copying and buffer underflows. To use add 'm' to the mode string of
902 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
904 * The malloc functions were completely rewritten by Wolfram Gloger based
905 on Doug Lea's malloc-2.7.0.c.
907 * Isamu Hasegawa contributed a completely new and POSIX-conformant
908 implementation of regex.
910 * Bruno Haible upgraded the iconv and locale implementation to support
911 Unicode 3.2.
913 * Contents of the LC_* and LANG environment variables in the CEN style are
914 not recognized anymore. It never was used. Change by Ulrich Drepper.
916 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
917 thread-local storage (TLS) ABI on some platforms.
918 Changes by Ulrich Drepper. SH support by Kaz Kojima.
920 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
921 EUC-JISX0213, and TSCII.
923 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
924 BSD-compatible interface for getting all network interface addresses.
925 Implementation for IPv4 by Roland McGrath.
927 * Loading of locale data is faster due to the introduction of a locale
928 archive. Implemented by Roland McGrath and Ulrich Drepper.
930 * Startup times are significantly reduced by not using exported functions
931 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
932 and Ulrich Drepper.
934 * Steven Munroe contributed a port to PowerPC64/Linux.
935 \f
936 Version 2.2.6
938 * The Hurd now uses the GNU libio implementation of stdio rather than the
939 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
941 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
942 with the same behavior as the Linux system call of the same name.
943 \f
944 Version 2.2.5
946 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
947 128-bit long double format.
949 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
950 IBM1161, and IBM1162 charsets.
952 * Andreas Jaeger contributed a port to x86-64/Linux.
954 * Peter Bruin contributed a port to PowerPC/Hurd.
956 * libc functions using I/O streams now can handle wide-oriented streams
957 as well.
959 * optimizations in the dynamic linker. Binaries created by recent binutils
960 versions start up quicker due to reduced time spent on relocations.
962 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
963 \f
964 Version 2.2.4
966 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
967 asinh, atanh, j0 for the 128-bit long double format.
969 * Bruno Haible updated all the code handling Unicode in some form to
970 support Unicode 3.1.
972 * Speed of regex for single-byte locales is back to previous levels.
973 Patch by Isamu Hasegawa.
975 * Alpha, SPARC, and IA-64 now also using floating stacks.
977 * Startup time of internationalized applications greatly improved through
978 iconv cache. Use iconvconfig to generate the cache file.
979 Contributed by Ulrich Drepper.
981 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
982 severe performance problems. Patch by David Mosberger.
984 * The Hurd port got a lot more functionality like AIO, various stdio
985 extensions, etc. Mainly done by Roland McGrath.
987 * mtrace can now lookup symbols in shared libraries.
988 \f
989 Version 2.2.3
991 * Intel's IA-64 math library is largely integrated. It provides fast and
992 accurate implementatations for most basic and standard math functions
993 in float, double, and long double format.
995 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
996 and asin for the 96-bit long double format and asin, log, tan for the
997 128-bit long double format.
999 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1000 The basic double functions exist today. Contributed by Abraham Ziv
1001 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1002 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1004 * An asynchronous name lookup library was added. The interface is designed
1005 after POSIX AIO. The proposal was circulated beforehand to get comments.
1006 No negative ones came in. Implemented by Ulrich Drepper.
1008 * Port to S390/64bit contributed by Martin Schwidefsky
1009 <schwidefsky@de.ibm.com>.
1011 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1012 of functions for Linux/IA-64.
1014 * The RPC code is now thread safe. Threads can now use the same service
1015 of different services at the same time. Patch by Eric Norum
1016 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1018 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1019 family of functions for Linux/S390.
1021 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1022 of functions for Linux/x86.
1024 * Port to Linux/CRIS contributed by Axis Communications.
1025 \f
1026 Version 2.2.2
1028 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1029 we can now check for namespace violations and missing declarations. The
1030 result is that almost all headers are now Unix-compliant (as defined in
1031 the upcoming XPG6). The negative side is that some programs might need
1032 corrections, too, if they depend on the incorrect form of the headers in
1033 previous versions which defined too many symbols and included too many
1034 other headers.
1036 * regex now handles multibyte character sets correctly.
1037 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1039 * iconv (the program) does now conform to the upcoming XPG6 and handles
1040 charmaps. Instead of the charset names the path of charmaps can be
1041 provided and the conversion happens based on this data.
1042 Contributed by Ulrich Drepper.
1044 * The locale program now provides detailed information about the installed
1045 locales. While
1047 locale -a
1049 only lists the names of the supported locales
1051 locale -a --verbose
1053 provides details such as country, language, and codeset name.
1054 Contributed by Ulrich Drepper.
1055 \f
1056 Version 2.2.1
1058 * The gencat program now parses the input file according to the charset
1059 selected by the LC_CTYPE category. This is important for stateful
1060 character sets. To make generating catalogs easier there is a way
1061 to overwrite the charset selected by the locale: before the first
1062 message or $ quote line the catalog can contain a line like
1064 $ codeset=ISO-8859-2
1066 to select the charset (ISO-8859-2 in this case).
1068 Implemented by Shinya Hanataka and Ulrich Drepper.
1070 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1071 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1072 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1074 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1075 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1077 * The LANGUAGE environment variable is now ignored unless the locale is
1078 changed from the default "C" locale.
1080 * The usual bug fixes.
1081 \f
1082 Version 2.2
1084 * Greg McGary added runtime support for bounds checking using gcc's
1085 new -fbounded-pointers option. ix86 target is complete. PowerPC
1086 is in progress.
1088 * Thorsten Kukuk added secure mode support to nscd.
1090 * The Berkeley db libraries have been removed.
1092 Related, the nss_db module is now in a separate package since it
1093 obviously requires a database library being available.
1095 * Wide character I/O streams implemented by Ulrich Drepper.
1097 * Functions from the extended socket API added by Ulrich Drepper.
1099 * Functions feenableexcept and fedisableexcept to control the
1100 behaviour of individual exceptions have been added by Andreas Jaeger.
1102 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1104 * The resolver code has been updated from bind 8.2.3-T5B which supports
1105 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1106 and Mark Kettenis.
1108 This change could in some situations effect backward compatibility. Since
1109 now `_res' is a thread-local instead of a global variable, modifying it
1110 in one thread does not have any effect in other threads.
1112 The resolver library was also extended to allow IPv6 as the transport
1113 protocol for the requests. This work was done by Stig Venaas.
1115 * Compatibility code for K&R C compilers has been removed from the
1116 header files. A ISO C compiler is needed to use the library
1117 (conforming to either C89 or C99 standard).
1119 * Complete rewrite of the localedef program to support multibyte character
1120 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1121 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1122 Implemented by Ulrich Drepper.
1124 Bruno Haible significantly improved the generation and use of the data
1125 structures for the wide character tables.
1127 * Plural handling in gettext implemented by Ulrich Drepper.
1129 * The utmp daemon has been removed.
1131 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1133 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1134 and Yutaka Niibe.
1136 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1138 * POSIX barriers implemented by Kaz Kylheku.
1140 * POSIX spawn function family implemented by Ulrich Drepper.
1142 * POSIX spinlocks are now available.
1144 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1146 * the configure option --enable-kernel=X.Y.Z allows to strip out
1147 compatibility for kernel versions before X.Y.Z. This is currently only
1148 implemented for Linux.
1150 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1151 field sin6_scope_id. This means that all programs using IPv6 should be
1152 recompiled. Don't expect binary compatibility with previous glibc
1153 versions.
1155 * various conversion modules for IBM character sets contributed by
1156 Masahide Washizawa.
1158 * IA-64 port by Jes Sorensen and HJ Lu.
1159 \f
1160 Version 2.1.3
1162 * bug fixes
1164 \f
1165 Version 2.1.2
1167 * bug fixes
1169 \f
1170 Version 2.1.1
1172 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1174 * New xdr functions are added; some rpc functions are now 64bit clean.
1176 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1178 * Fixed known incompatibilities with glibc 2.0.
1180 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1182 * Optimized a number of functions (especially the ELF dynamic loader).
1184 * Update timezone data files.
1186 * lots of charmaps corrections
1188 * some new locale definitions and charmaps
1190 \f
1191 Version 2.1
1193 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1194 conform to POSIX member type requirements. Symbol versions have been
1195 adjusted as needed within the library, and for direct use by applications,
1196 but there is potential for problems if third-party libraries use
1197 struct timeval as part of their interface. This does not present
1198 a problem for X and other "essential" system libraries.
1200 * An additional locale model to support C++ Standard Library locale
1201 model and probably more was implemented by Ulrich Drepper.
1203 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1204 symbol level.
1206 * Miles Bader provided the `argp' function family to support hierachical
1207 command line argument parsing, layered on top of getopt.
1209 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1211 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1212 numbers.
1214 * scanf recognizes the %a and %A format for scanning floating point numbers.
1216 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1217 information and interfaces for the available integer types.
1219 * about 130 new math functions were added to implement the ISO C9x math
1220 library.
1222 * the new header <complex.h> contains definitions of the complex math
1223 functions from ISO C 9X.
1225 * the new header <tgmath.h> defines generic macros to use complex or
1226 real valued functions.
1228 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1230 * Andreas Jaeger provided a test suite for the math library.
1232 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1234 * Ulrich Drepper added character set conversion functions (iconv).
1236 * Optimized string functions have been added.
1238 * The localedata addon is now part of glibc.
1240 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1242 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1243 daemon for NSS (nscd).
1245 Missing a better place here are some numbers on improvements. Under
1246 Linux 2.1.125 un-tar-ing the kernel sources takes
1248 user system wall
1250 using local files 12.19s 6.88s 22.91s
1252 using NIS 13.92s 8.91s 26.34s
1254 using NIS & nscd 10.37s 7.34s 25.30s
1256 using NIS+ 27.57s 30.37s 640.46s
1258 using NIS+ & nscd 10.25s 7.83s 26.51s
1260 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1262 Keep in mind that non-namelookup related operations dominate above times.
1263 It was just a common complain that using NIS+ unpacking the kernel is
1264 horribly slow.
1266 [1] The old nscd implementation is not available anymore since it was
1267 distributed with glibc up to version 2.0.98 and thus is now replaced.
1269 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1271 * Mark Kettenis provided a Hesiod NSS module.
1273 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1274 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1276 * rcmd can now handle netgroups (Dick Streefland).
1278 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1279 Bambrough.
1281 * Support for the IPv6 protocol has been added to the socket API, as per the
1282 latest draft standards.
1284 * Support for Linux 2.2 has been added.
1286 * Interface changes relative to the latest 2.0.x release:
1287 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1288 addseverity NEW: Unix98
1289 alphasort64 NEW: LFS
1290 argp_err_exit_status NEW: argp, GNU ext
1291 argp_error NEW: argp, GNU ext
1292 argp_failure NEW: argp, GNU ext
1293 argp_help NEW: argp, GNU ext
1294 argp_parse NEW: argp, GNU ext
1295 argp_program_bug_address NEW: argp, GNU ext
1296 argp_program_version NEW: argp, GNU ext
1297 argp_program_version_hook NEW: argp, GNU ext
1298 argp_state_help NEW: argp, GNU ext
1299 argp_usage NEW: argp, GNU ext
1300 authdes_create NEW: Secure RPC
1301 authdes_getucred NEW: Secure RPC
1302 authdes_pk_create NEW: Secure RPC
1303 backtrace NEW: GNU ext.
1304 backtrace_symbols NEW: GNU ext.
1305 backtrace_symbols_fd NEW: GNU ext.
1306 cacos NEW: ISO C 9x
1307 cacosf NEW: ISO C 9x
1308 cacosh NEW: ISO C 9x
1309 cacoshf NEW: ISO C 9x
1310 cacoshl NEW: ISO C 9x
1311 cacosl NEW: ISO C 9x
1312 capget NEW: kernel
1313 capset NEW: kernel
1314 carg NEW: ISO C 9x
1315 cargf NEW: ISO C 9x
1316 cargl NEW: ISO C 9x
1317 casin NEW: ISO C 9x
1318 casinf NEW: ISO C 9x
1319 casinh NEW: ISO C 9x
1320 casinhf NEW: ISO C 9x
1321 casinhl NEW: ISO C 9x
1322 casinl NEW: ISO C 9x
1323 catan NEW: ISO C 9x
1324 catanf NEW: ISO C 9x
1325 catanh NEW: ISO C 9x
1326 catanhf NEW: ISO C 9x
1327 catanhl NEW: ISO C 9x
1328 catanl NEW: ISO C 9x
1329 cbc_crypt NEW: Secure RPC
1330 ccos NEW: ISO C 9x
1331 ccosf NEW: ISO C 9x
1332 ccosh NEW: ISO C 9x
1333 ccoshf NEW: ISO C 9x
1334 ccoshl NEW: ISO C 9x
1335 ccosl NEW: ISO C 9x
1336 cexp NEW: ISO C 9x
1337 cexpf NEW: ISO C 9x
1338 cexpl NEW: ISO C 9x
1339 cimag NEW: ISO C 9x
1340 cimagf NEW: ISO C 9x
1341 cimagl NEW: ISO C 9x
1342 clearerr_locked REMOVED
1343 clntunix_create NEW: sunrpc ext
1344 clog NEW: ISO C 9x
1345 clog10 NEW: ISO C 9x
1346 clog10f NEW: ISO C 9x
1347 clog10l NEW: ISO C 9x
1348 clogf NEW: ISO C 9x
1349 clogl NEW: ISO C 9x
1350 conj NEW: ISO C 9x
1351 conjf NEW: ISO C 9x
1352 conjl NEW: ISO C 9x
1353 cpow NEW: ISO C 9x
1354 cpowf NEW: ISO C 9x
1355 cpowl NEW: ISO C 9x
1356 cproj NEW: ISO C 9x
1357 cprojf NEW: ISO C 9x
1358 cprojl NEW: ISO C 9x
1359 creal NEW: ISO C 9x
1360 crealf NEW: ISO C 9x
1361 creall NEW: ISO C 9x
1362 creat64 NEW: LFS
1363 csin NEW: ISO C 9x
1364 csinf NEW: ISO C 9x
1365 csinh NEW: ISO C 9x
1366 csinhf NEW: ISO C 9x
1367 csinhl NEW: ISO C 9x
1368 csinl NEW: ISO C 9x
1369 csqrt NEW: ISO C 9x
1370 csqrtf NEW: ISO C 9x
1371 csqrtl NEW: ISO C 9x
1372 ctan NEW: ISO C 9x
1373 ctanf NEW: ISO C 9x
1374 ctanh NEW: ISO C 9x
1375 ctanhf NEW: ISO C 9x
1376 ctanhl NEW: ISO C 9x
1377 ctanl NEW: ISO C 9x
1378 des_setparity NEW: Secure RPC
1379 ecb_crypt NEW: Secure RPC
1380 endutxent NEW: Unix98
1381 exp10 NEW: ISO C 9x
1382 exp10f NEW: ISO C 9x
1383 exp10l NEW: ISO C 9x
1384 exp2 NEW: ISO C 9x
1385 exp2f NEW: ISO C 9x
1386 exp2l NEW: ISO C 9x
1387 fattach NEW: STREAMS
1388 fdetach NEW: STREAMS
1389 fdim NEW: ISO C 9x
1390 fdimf NEW: ISO C 9x
1391 fdiml NEW: ISO C 9x
1392 feclearexcept NEW: ISO C 9x
1393 fegetenv NEW: ISO C 9x
1394 fegetexceptflag NEW: ISO C 9x
1395 fegetround NEW: ISO C 9x
1396 feholdexcept NEW: ISO C 9x
1397 feof_locked REMOVED
1398 feraiseexcept NEW: ISO C 9x
1399 ferror_locked REMOVED
1400 fesetenv NEW: ISO C 9x
1401 fesetexceptflag NEW: ISO C 9x
1402 fesetround NEW: ISO C 9x
1403 fetestexcept NEW: ISO C 9x
1404 feupdateenv NEW: ISO C 9x
1405 fflush_locked REMOVED
1406 ffsl NEW: GNU ext.
1407 ffsll NEW: GNU ext.
1408 fgetpos64 NEW: LFS
1409 fgets_unlocked NEW: GNU ext.
1410 fileno_locked REMOVED
1411 fma NEW: ISO C 9x
1412 fmaf NEW: ISO C 9x
1413 fmal NEW: ISO C 9x
1414 fmax NEW: ISO C 9x
1415 fmaxf NEW: ISO C 9x
1416 fmaxl NEW: ISO C 9x
1417 fmin NEW: ISO C 9x
1418 fminf NEW: ISO C 9x
1419 fminl NEW: ISO C 9x
1420 fmtmsg NEW: Unix98
1421 fopen64 NEW: LFS
1422 fputc_locked REMOVED
1423 fputs_unlocked NEW: GNU ext.
1424 fread_unlocked NEW: GNU ext.
1425 freopen64 NEW: LFS
1426 fseeko NEW: Unix98
1427 fsetpos64 NEW: LFS
1428 fstatfs64 NEW: LFS
1429 fstatvfs NEW: Unix98
1430 fstatvfs64 NEW: LFS
1431 ftello NEW: Unix98
1432 ftello64 NEW: LFS
1433 ftruncate64 NEW: LFS
1434 ftw64 NEW: LFS
1435 fwrite_unlocked NEW: GNU ext.
1436 gai_strerror NEW: IPv6
1437 gamma_r REMOVED
1438 gammaf_r REMOVED
1439 gammal_r REMOVED
1440 getchar_locked REMOVED
1441 getdate NEW: Unix98
1442 getdate_err NEW: Unix98
1443 getdate_r NEW: GNU ext.
1444 getmsg NEW: STREAMS
1445 getnameinfo NEW: IPv6
1446 getnetname NEW: Secure RPC
1447 getpmsg NEW: STREAMS
1448 getpt NEW: Unix98 PTY
1449 getrlimit64 NEW: LFS
1450 getutxent NEW: Unix98
1451 getutxid NEW: Unix98
1452 getutxline NEW: Unix98
1453 glob64 NEW: GNU ext.
1454 globfree64 NEW: GNU ext.
1455 gnu_get_libc_release NEW: GNU ext.
1456 gnu_get_libc_version NEW: GNU ext.
1457 grantpt NEW: Unix98 PTY
1458 host2netname NEW: Secure RPC
1459 iconv NEW: iconv
1460 iconv_close NEW: iconv
1461 iconv_open NEW: iconv
1462 if_freenameindex NEW: IPv6
1463 if_indextoname NEW: IPv6
1464 if_nameindex NEW: IPv6
1465 if_nametoindex NEW: IPv6
1466 in6addr_any NEW: IPv6
1467 in6addr_loopback NEW: IPv6
1468 inet6_isipv4mapped NEW: IPv6
1469 isastream NEW: STREAMS
1470 iswblank NEW: GNU ext.
1471 key_decryptsession NEW: Secure RPC
1472 key_decryptsession_pk NEW: Secure RPC
1473 key_encryptsession NEW: Secure RPC
1474 key_encryptsession_pk NEW: Secure RPC
1475 key_gendes NEW: Secure RPC
1476 key_get_conv NEW: Secure RPC
1477 key_secretkey_is_set NEW: Secure RPC
1478 key_setnet NEW: Secure RPC
1479 key_setsecret NEW: Secure RPC
1480 llrint NEW: ISO C 9x
1481 llrintf NEW: ISO C 9x
1482 llrintl NEW: ISO C 9x
1483 llround NEW: ISO C 9x
1484 llroundf NEW: ISO C 9x
1485 llroundl NEW: ISO C 9x
1486 log2 NEW: ISO C 9x
1487 log2f NEW: ISO C 9x
1488 log2l NEW: ISO C 9x
1489 lrint NEW: ISO C 9x
1490 lrintf NEW: ISO C 9x
1491 lrintl NEW: ISO C 9x
1492 lround NEW: ISO C 9x
1493 lroundf NEW: ISO C 9x
1494 lroundl NEW: ISO C 9x
1495 lseek64 NEW: LFS
1496 makecontext NEW: Unix98
1497 mempcpy NEW: GNU ext.
1498 mmap64 NEW: LFS
1499 moncontrol REMOVED
1500 modify_ldt NEW: kernel
1501 nan NEW: ISO C 9x
1502 nanf NEW: ISO C 9x
1503 nanl NEW: ISO C 9x
1504 nearbyint NEW: ISO C 9x
1505 nearbyintf NEW: ISO C 9x
1506 nearbyintl NEW: ISO C 9x
1507 netname2host NEW: Secure RPC
1508 netname2user NEW: Secure RPC
1509 nexttoward NEW: ISO C 9x
1510 nexttowardf NEW: ISO C 9x
1511 nexttowardl NEW: ISO C 9x
1512 nftw NEW: Unix98
1513 nftw64 NEW: LFS
1514 open64 NEW: LFS
1515 passwd2des NEW: Secure RPC
1516 pow10 NEW: GNU ext.
1517 pow10f NEW: GNU ext.
1518 pow10l NEW: GNU ext.
1519 pread NEW: Unix98
1520 pread64 NEW: LFS
1521 printf_size NEW: GNU ext.
1522 printf_size_info NEW: GNU ext.
1523 profil_counter REMOVED
1524 pthread_mutexattr_getkind_np REPLACED
1525 pthread_mutexattr_setkind_np REPLACED
1526 ptsname NEW: Unix98 PTY
1527 ptsname_r NEW: Unix98 PTY
1528 putc_locked REMOVED
1529 putchar_locked REMOVED
1530 putgrent NEW: GNU ext.
1531 putmsg NEW: STREAMS
1532 putpmsg NEW: STREAMS
1533 pututxline NEW: Unix98
1534 pwrite NEW: Unix98
1535 pwrite64 NEW: LFS
1536 readdir64 NEW: LFS
1537 readdir64_r NEW: LFS
1538 remquo NEW: ISO C 9x
1539 remquof NEW: ISO C 9x
1540 remquol NEW: ISO C 9x
1541 round NEW: ISO C 9x
1542 roundf NEW: ISO C 9x
1543 roundl NEW: ISO C 9x
1544 rtime NEW: GNU ext.
1545 scalbln NEW: ISO C 9x
1546 scalblnf NEW: ISO C 9x
1547 scalblnl NEW: ISO C 9x
1548 scandir64 NEW: LFS
1549 sendfile NEW: kernel
1550 setcontext NEW: Unix98
1551 setrlimit64 NEW: LFS
1552 setutxent NEW: Unix98
1553 sighold NEW: Unix98
1554 sigignore NEW: Unix98
1555 sigqueue NEW: POSIX.1b
1556 sigrelse NEW: Unix98
1557 sigset NEW: POSIX.1b
1558 sigtimedwait NEW: POSIX.1b
1559 sigwaitinfo NEW: POSIX.1b
1560 sincos NEW: GNU ext.
1561 sincosf NEW: GNU ext.
1562 sincosl NEW: GNU ext.
1563 statfs64 NEW: LFS
1564 statvfs NEW: Unix98
1565 statvfs64 NEW: LFS
1566 strcasestr NEW: GNU ext.
1567 strtoimax NEW: ISO C 9x
1568 strtoumax NEW: ISO C 9x
1569 strverscmp NEW: GNU ext.
1570 svcauthdes_stats NEW: Secure RPC
1571 svcunix_create NEW: sunrpc etx
1572 svcunixfd_create NEW: sunrpc ext
1573 swapcontext NEW: Unix98
1574 tcgetsid NEW: Unix98 PTY
1575 tdestroy NEW: GNU ext.
1576 tgamma NEW: ISO C 9x
1577 tgammaf NEW: ISO C 9x
1578 tgammal NEW: ISO C 9x
1579 tmpfile64 NEW: LFS
1580 trunc NEW: ISO C 9x
1581 truncate64 NEW: LFS
1582 truncf NEW: ISO C 9x
1583 truncl NEW: ISO C 9x
1584 umount2 NEW: kernel
1585 unlockpt NEW: Unix98 PTY
1586 updwtmpx NEW: Unix98
1587 user2netname NEW: Secure RPC
1588 utmpxname NEW: Unix98
1589 versionsort NEW: GNU ext.
1590 versionsort64 NEW: GNU ext.
1591 waitid NEW: Unix98
1592 wcscasecmp NEW: GNU ext.
1593 wcsncasecmp NEW: GNU ext.
1594 wcsnlen NEW: GNU ext.
1595 wcstoimax NEW: ISO C 9x
1596 wcstoll NEW: ISO C 9x
1597 wcstoull NEW: ISO C 9x
1598 wcstoumax NEW: ISO C 9x
1599 wcswcs NEW: Unix98
1600 wordexp NEW: POSIX.2
1601 wordfree NEW: POSIX.2
1602 write_profiling REMOVED
1603 xdecrypt NEW: Secure RPC
1604 xdr_authdes_cred NEW: Secure RPC
1605 xdr_authdes_verf NEW: Secure RPC
1606 xdr_cryptkeyarg NEW: Secure RPC
1607 xdr_cryptkeyarg2 NEW: Secure RPC
1608 xdr_cryptkeyres NEW: Secure RPC
1609 xdr_getcredres NEW: Secure RPC
1610 xdr_key_netstarg NEW: Secure RPC
1611 xdr_key_netstres NEW: Secure RPC
1612 xdr_keybuf NEW: Secure RPC
1613 xdr_keystatus NEW: Secure RPC
1614 xdr_netnamestr NEW: Secure RPC
1615 xdr_sizeof NEW: Secure RPC
1616 xdr_unixcred NEW: sunrpc ext
1617 xencrypt NEW: Secure RPC
1618 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1619 \f
1620 Version 2.0.6
1622 * more bug fixes
1624 \f
1625 Version 2.0.5
1627 * more bug fixes
1629 * inet_ntoa is thread-safe
1631 * updwtmp is moved from libutil to libc
1633 * rewrite of cbrt function
1635 * update of timezone data
1636 \f
1637 Version 2.0.4
1639 * more bug fixes
1640 \f
1641 Version 2.0.3
1643 * more bug fixes
1644 \f
1645 Version 2.0.2
1647 * more bug fixes
1649 * add atoll function
1651 * fix complex problems in Berkeley DB code
1653 * fix math functions
1654 \f
1655 Version 2.0.1
1657 * fixed lots of header problems (especially Linux/GNU specific)
1659 * dynamic loader preserves all registers
1661 * Roland McGrath provided support for handling of auxiliary objects in
1662 the ELF dynamic loader.
1664 * support for parallel builds is improved
1665 \f
1666 Version 2.0
1668 * GNU extensions are no longer declared by default. To enable them you
1669 must define the macro `_GNU_SOURCE' in your program or compile with
1670 `-D_GNU_SOURCE'.
1672 * The library has changed from using GNU ld symbol aliases to using weak
1673 symbols where available. The ELF object file format supports weak
1674 symbols; GNU ld also supports weak symbols in the a.out format. (There
1675 is also now support for other GNU ld extensions in ELF. Use the
1676 `--with-elf' option to configure to indicate you have ELF, and
1677 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1678 of many files which contained only symbol aliases, reducing the size of
1679 the source and the compiled library; many other files were renamed to
1680 less cryptic names previously occupied by the symbol alias files.
1681 There is a new header file <elf.h> for programs which operate on
1682 files in the ELF format.
1684 * Converted to Autoconf version 2, so `configure' has more options.
1685 Run `configure --help' to see the details.
1687 * The library can now be configured to build profiling, highly-optimized
1688 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1689 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1690 `configure' enable building these extra libraries. The shared library is
1691 built by default when using both ELF and GNU ld. When shared libraries
1692 are enabled, the new library `-ldl' is available for arbitrary run-time
1693 loading of shared objects; its interface is defined in <dlfcn.h>. The
1694 new header file <link.h> gives access to the internals of the run-time
1695 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1696 application of same name on other systems and it provides information
1697 about dynamically linked binaries.
1699 * The C library now provides the run-time support code for profiling
1700 executables compiled with `-pg'. Programs can control the profiling code
1701 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1702 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1703 the support for this file format was contributed by David Mosberger-Tang.
1705 * The math code has been replaced with a math library based on fdlibm from
1706 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1707 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1708 functions. The math functions now reside in a separate library, so
1709 programs using them will need to use `-lm' their linking commands.
1711 * John C. Bowman contributed optimized ix87 assembler inline functions.
1713 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1714 mechanism similar to that found in Solaris 2. This is now used for the
1715 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1716 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1717 file controls what services are used for each individual database. This
1718 works by loading shared libraries with names specified in `nsswitch.conf',
1719 so service modules can be changed or added at any time without even
1720 relinking any program. Currently there are the file, db, and NIS based
1721 NSS services available.
1723 * The new functions `strtoq' and `strtouq' parse integer values from
1724 strings, like `strtol' and `strtoul', but they return `long long int' and
1725 `unsigned long long int' values, respectively (64-bit quantities).
1727 * The new functions `strtof' and `strtold' parse floating-point values from
1728 strings, like `strtod', but they return `float' and `long double' values,
1729 respectively (on some machines `double' and `long double' are the same).
1731 * Ulrich Drepper has contributed new implementations of the floating-point
1732 printing and reading code used in the `printf' family of functions and
1733 `strtod', `strtof', and `strtold'. These new functions are perfectly
1734 accurate, and much faster than the old ones.
1736 * The implementation of the POSIX locale model was completely rewritten by
1737 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1738 to compile the POSIX locale definition.
1740 * The former dummy implementations of the strcoll and strxfrm function are
1741 now replaced by fully functional code contributed by Ulrich Drepper. The
1742 collation information comes from the POSIX locale definitions.
1744 * The new header <langinfo.h> defines an interface for accessing
1745 various locale-dependent data (using the locale chosen with `setlocale').
1747 * Ulrich Drepper has contributed a new suite of functions for operation on
1748 wide-character and multibyte-character strings, in <wchar.h>;
1749 and classification and case conversion of wide characters, in <wctype.h>.
1750 These new functions are conforming to the ISO C, Amendement 1 specification.
1752 * There is now a second implementation of the standard I/O library available.
1753 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1754 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1756 * You can now use positional parameter specifications in format strings
1757 for the `printf' and `scanf' families of functions. For example,
1758 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1759 ``Number 6, Mr Jones''. This is mainly useful when providing different
1760 format strings for different languages, whose grammars may dictate
1761 different orderings of the values being printed. To support this
1762 feature, the interface for `register_printf_handler' has changed; see
1763 the header file <printf.h> for details.
1765 * The `printf' and `scanf' families of functions now understand a new
1766 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1767 to group numbers as indicated by the locale; for `scanf' and friends, this
1768 says to accept as valid only a number with all the proper grouping
1769 separators in the right places. In the default "C" locale, numbers are
1770 not grouped; but locales for specific countries will define the usual
1771 conventions (i.e. separate thousands with `,' in the US locale).
1773 * The pgrp functions have been regularized, slightly incompatibly but much
1774 less confusingly. The core functions are now `getpgid' and `setpgid',
1775 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1776 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1777 provided for compatibility. There is no longer an incompatible `getpgrp'
1778 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1780 * The new header file <fts.h> and suite of functions simplify programs that
1781 operate on directory trees. This code comes from 4.4 BSD.
1783 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1784 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1785 NSS scheme used in glibc.
1787 * There is a new malloc debugging hook `__memalign_hook'.
1789 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1790 `unsigned int' in <sys/types.h>. These are for compatibility only and
1791 their use is discouraged.
1793 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1794 done differently, so that it works even without GNU ld.
1796 * New function `euidaccess' checks allowed access to a file like `access',
1797 but using the effective IDs instead of the real IDs.
1799 * The time zone data files have been updated for the latest and greatest
1800 local time conventions of the countries of the world.
1802 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1803 see <dirent.h>.
1805 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1806 for formatting floating-point numbers. They are provided only for
1807 compatibility; new programs should use `sprintf' instead. There are
1808 also equivalent function for the `long double' floating-point type and
1809 all functions also exist in a reentrant form.
1811 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1812 functions for maintaining the login-record files (primarily of use to
1813 system programs such as `login'), and convenient functions for
1814 allocating and initializing a pseudo-terminal (pty) device.
1816 * Ulrich Drepper has contributed new support for System V style
1817 shared memory and IPC on systems that support it.
1819 * Ulrich Drepper has contributed several miscellaneous new functions found
1820 in System V: The `hsearch' family of functions provide an effective
1821 implementation of hash tables; `a64l' and `l64a' provide a very simple
1822 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1823 number generator.
1825 * Ulrich Drepper has contributed new reentrant counterparts for the
1826 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1828 * Ulrich Drepper has contributed new, highly-optimized versions of several
1829 string functions for the i486/Pentium family of processors.
1831 * Ulrich Drepper has updated the Linux-specific code, based largely
1832 on work done in Hongjiu Lu's version of GNU libc for Linux.
1833 The GNU library now supports Linux versions 2.0.10 and later,
1834 using the ELF object file format (i[3456]86-*-linux).
1836 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1838 * David Mosberger-Tang and Richard Henderson have ported the C library
1839 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1840 dynamic linking support for ELF/Alpha.
1842 * Richard Henderson contributed several Alpha optimized assembler function
1843 for arithmetic and string handling.
1845 * Ulrich Drepper has contributed a new set of message catalog functions to
1846 support multiple languages using the <libintl.h> interface, for use with
1847 his new package GNU gettext. Translation volunteers have contributed
1848 catalogs of the library's messages in Spanish, German, and Korean.
1850 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1851 program and the `catgets' function for reading the catalog files it
1852 creates. (The <libintl.h> interface is preferred; we include the
1853 <nl_types.h> interface using `catgets' only for source compatibility with
1854 programs already written to use it.)
1856 * New header file <values.h> gives SVID-compatible names for <limits.h>
1857 constants.
1859 * Various new macros, declarations, and small header files for compatibility
1860 with 4.4 BSD.
1862 * New function `group_member' is a convenient way to check if a process has
1863 a given effective group ID.
1865 * When using GCC 2.7 and later, the socket functions are now declared in a
1866 special way so that passing an argument of type `struct sockaddr_in *',
1867 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1868 `struct sockaddr *' type, does not generate a type-clash warning.
1870 * New function `error' declared in header file <error.h> is a convenient
1871 function for printing error messages and optionally exiting; this is the
1872 canonical function used in GNU programs. The new functions `err', `warn',
1873 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1874 doing the same thing.
1876 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1877 POSIX.2 `glob' function to do ~ and {...} expansion.
1879 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1880 `clearenv' which is used in POSIX.9 is also available.
1882 * New function `getsid' returns session ID number on systems that support it.
1884 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1885 files <db.h> and <mpool.h> provide a rich set of functions for several
1886 types of simple databases stored in memory and in files, and <ndbm.h> is
1887 an old `ndbm'-compatible interface using the `db' functions. Link with
1888 `-ldb' to get these functions.
1890 * New macro `strdupa' copies a string like `strdup', but uses local stack
1891 space from `alloca' instead of dynamic heap space from `malloc'.
1893 * New function `strnlen' is like `strlen' but searches only a given maximum
1894 number of characters for the null terminator. `stpncpy', `strndup' and
1895 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1896 function.
1898 * New function `statfs' in header <sys/statfs.h>.
1900 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1901 provide convenient functions for operating on blocks of null-terminated
1902 strings.
1904 * A new suite of functions in <utmp.h> handle all the details of reading
1905 and writing the utmp file.
1907 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1908 Thorsten Kukuk.
1910 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1911 completely POSIX compliant and also implemented the extended functionality
1912 to handle alternate digit representation and alternate era date formats.
1914 * Ulrich Drepper provided an implementation of the `strptime' function
1915 defined in XPG4.2 which transforms a string into a `struct tm' value.
1917 * Paul Eggert provided the tzselect shell script as part of the timezone
1918 code. The shell script makes it easy to select the correct timezone
1919 specification.
1921 * The implementation of the malloc family of functions is completely replaced
1922 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1923 The implementation uses the mmap function (if available) and it is
1924 optimized for the use in multi threaded programs.
1926 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1927 functions. This new functionality is usable by specifying a special
1928 salt string and it is compatible with implementation on *BSD systems.
1930 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1931 `getsubopt' to handle second level command line options, `bsd_signal'
1932 to access BSD style `signal' functionality, the obsolete `regexp' style
1933 expression matcher.
1935 * the `lchown' function is available on system which support this
1936 functionality.
1938 * The implementation of the shadow password handling function was contributed
1939 by Ulrich Drepper.
1941 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1943 * POSIX.1g support was added. The <sys/select.h> header is available,
1944 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1945 implementation of `getaddrinfo'.
1946 \f
1947 Version 1.09
1949 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1951 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1952 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1954 * The new function `daemon' from 4.4 BSD is useful for server programs that
1955 want to put themselves in the background.
1957 * Joel Sherrill has contributed support for several standalone boards that
1958 run without an operating system.
1960 * `printf', `scanf' and friends now accept a `q' type modifier for long
1961 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1963 * All of the code taken from BSD (notably most of the math and networking
1964 routines) has been updated from the BSD 4.4-Lite release.
1966 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1968 * The new functions `getdomainname' and `setdomainname' fetch or change the
1969 YP/NIS domain name. These are system calls which exist on systems which
1970 have YP (aka NIS).
1972 * The time zone data files have been updated for the latest international
1973 conventions.
1975 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1976 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1977 \f
1978 Version 1.08
1980 * The C library now includes support for Sun RPC, from Sun's free
1981 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1982 are included. (There is still no support for YP.)
1984 * Tom Quinn has contributed a port of the C library to SGI machines running
1985 Irix 4 (mips-sgi-irix4).
1987 * The new `lockf' function is a simplified interface to the locking
1988 facilities of `fcntl', included for compatibility.
1990 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1992 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1994 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1995 compatibility.
1997 * The error message printed by `assert' for a failed assertion now includes
1998 the name of the program (if using GNU ld) and the name of the calling
1999 function (with versions of GCC that support this).
2001 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2003 * The library now includes the <sys/mman.h> header file and memory
2004 management functions `mmap', `munmap', `mprotect', `msync', and
2005 `madvise', on systems that support those facilities.
2007 * The interface for `mcheck' has changed slightly: the function called to
2008 abort the program when an allocation inconsistency is detected now takes
2009 an argument that indicates the type of failure. The new function
2010 `mprobe' lets you request a consistency check for a particular block at
2011 any time (checks are normally done only when you call `free' or `realloc'
2012 on a block).
2014 * It is now possible to easily cross-compile the C library, building on one
2015 system a library to run on another machine and/or operating system. All
2016 you need to do is set the variable `HOST_CC' in `configparms' to the
2017 native compiler for programs to run on the machine you are building on (a
2018 few generator programs are used on Unix systems); set `CC' to the
2019 cross-compiler.
2021 * The new function `fexecve' (only implemented on the GNU system) executes
2022 a program file given a file descriptor already open on the file.
2023 \f
2024 Version 1.07
2026 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2027 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2029 * You can set the variable `libprefix' in `configparms' to specify a prefix
2030 to be prepended to installed library files; this makes it easy to install
2031 the GNU C library to be linked as `-lgnuc' or whatever.
2033 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2034 copies a limited number of characters from a string, and returns the
2035 address of the last character written.
2037 * You no longer need to check for whether the installed `stddef.h' is
2038 compatible with the GNU C library. configure now checks for you.
2040 * You can now define a per-stream `fileno' function to convert the
2041 stream's cookie into an integral file descriptor.
2043 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2044 allocates zero bytes of storage, and returns a unique pointer which
2045 you can pass to `realloc' or `free'. The behavior is undefined if
2046 you dereference this pointer.
2048 * The C library now runs on Sony NEWS m68k machines running either
2049 NewsOS 3 or NewsOS 4.
2051 * The new `syscall' function is a system-dependent primitive function
2052 for invoking system calls. It has the canonical behavior on Unix
2053 systems, including unreliable return values for some calls (such as
2054 `pipe', `fork' and `getppid').
2056 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2057 to `EAGAIN', which is the preferred name. On systems whose kernels
2058 use two distinct codes, the C library now translates EWOULDBLOCK to
2059 EAGAIN in every system call function.
2060 \f
2061 Version 1.06
2063 * The GNU C Library Reference Manual is now distributed with the library.
2064 `make dvi' will produce a DVI file of the printed manual.
2065 `make info' will produce Info files that you can read on line using C-h i
2066 in Emacs or the `info' program.
2067 Please send comments on the manual to bug-glibc-manual@gnu.org.
2069 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2071 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2073 * Jason Merrill has contributed a port to the Sequent Symmetry running
2074 Dynix version 3 (i386-sequent-dynix).
2076 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2077 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2079 * New function `memory_warnings' lets you arrange to get warnings when
2080 malloc is running out of memory to allocate, like Emacs gives you.
2082 * The C library now contains the relocating allocator used in Emacs 19 for
2083 its editing buffers. This allocator (ralloc) minimizes allocation
2084 overhead and fragmentation by moving allocated regions around whenever it
2085 needs to. You always refer to a ralloc'd region with a "handle" (a
2086 pointer to a pointer--an object of type `void **').
2088 * There is a new `printf' format: `%m' gives you the string corresponding
2089 to the error code in `errno'.
2091 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2092 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2093 pass, the `a' modifier says to fill in a `char **' you pass with a
2094 malloc'd string.
2096 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2097 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2098 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2100 * `mkstemp' is a traditional Unix function to atomically create and open a
2101 uniquely-named temporary file.
2102 \f
2103 Version 1.05
2105 * The standard location for the file that says what the local timezone is
2106 has changed again. It is now `/usr/local/etc/localtime' (or more
2107 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2109 * The distribution no longer contains any files with names longer than 14
2110 characters.
2112 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2113 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2115 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2116 \f
2117 Version 1.04
2119 * The configuration process has changed quite a bit. The `configure'
2120 script is now used just like the configuration scripts for other GNU
2121 packages. The `sysdeps' directory hierarchy is much rearranged.
2122 The file `INSTALL' explains the new scheme in detail.
2124 * The header files no longer need to be processed into ANSI C and
2125 traditional C versions. There is just one set of files to install, and
2126 it will work with ANSI or old C compilers (including `gcc -traditional').
2128 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2129 MIPS DECStation running Ultrix 4.
2131 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2132 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2133 made itself into a shared library.
2135 * Yet further improved support for the i386, running 4.3 BSD-like systems
2136 (such as Mach 3 with the Unix single-server), or System V.
2138 * New function `strncasecmp' to do case-insensitive string comparison
2139 with limited length.
2141 * New function `strsep' is a reentrant alternative to `strtok'.
2143 * New functions `scandir' and `alphasort' for searching directories.
2145 * New function `setenv' is a better interface to `putenv'.
2147 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2148 function for traversing a directory tree.
2150 * The GNU obstack package is now also part of the C library.
2151 The new function `open_obstack_stream' creates a stdio stream that
2152 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2153 formatted output directly to an obstack.
2155 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2156 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2158 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2160 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2161 things to your strings.
2163 * There are some new test programs: test-fseek, testmb, and testrand.
2165 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2166 These ports are not finished, but are a good starting place for really
2167 supporting those systems.
2169 * `/etc/localtime' is now the standard location for the file that says what
2170 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2171 This follows the general principle that `/etc' is the place for all local
2172 configuration files.
2174 * The C library header files now use `extern "C"' when used by the C++
2175 compiler, so the C library should now work with C++ code.
2177 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2178 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2179 in <strings.h>.)
2181 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2182 function which uses the `merge sort' algorithm, and is said to be
2183 significantly faster than the old GNU `qsort' function. Merge sort is
2184 now the standard `qsort' function. The new algorithm can require a lot
2185 of temporary storage; so, the old sorting function is called when the
2186 required storage is not available.
2188 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2189 provides the Unix `crypt' function, plus some other entry points.
2191 * The code and header files taken from 4.4 BSD have been updated with the
2192 latest files released from Berkeley.
2193 \f
2194 ----------------------------------------------------------------------
2195 Copyright information:
2197 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2199 Permission is granted to anyone to make or distribute verbatim copies
2200 of this document as received, in any medium, provided that the
2201 copyright notice and this permission notice are preserved,
2202 thus giving the recipient permission to redistribute in turn.
2204 Permission is granted to distribute modified versions
2205 of this document, or of portions of it,
2206 under the above conditions, provided also that they
2207 carry prominent notices stating who last changed them.
2208 \f
2209 Local variables:
2210 version-control: never
2211 fill-column: 76
2212 End: