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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, 14317, 14981, 14982, 14985, 14994, 14996.
14 \f
15 Version 2.17
17 * The following bugs are resolved with this release:
19 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
20 9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
21 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
22 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
23 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
24 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298, 14303,
25 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417,
26 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519,
27 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576,
28 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648,
29 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743,
30 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805,
31 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835,
32 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872, 14879,
33 14889, 14893, 14898, 14914.
35 * Optimization of memcpy for MIPS.
37 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
38 EMFILE has been fixed (Bugzilla #14889).
40 * The add-on ports collection is now distributed in the "ports" subdirectory
41 of the main GNU C Library distribution, rather than separately.
43 * Port to ARM AArch64 contributed by Linaro.
45 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
46 Optimized versions of memcpy, memset, and memcmp added for System z10 and
47 zEnterprise z196.
48 Implemented by Andreas Krebbel.
50 * The new function secure_getenv allows secure access to the environment,
51 returning NULL if running in a SUID/SGID process. This function replaces
52 the internal function __secure_getenv.
54 * SystemTap static probes have been added into the dynamic linker.
55 Implemented by Gary Benson.
57 * Optimizations of string functions strstr, strcasestr and memmem.
58 Implemented by Maxim Kuvyrkov.
60 * The minimum Linux kernel version that this version of the GNU C Library
61 can be used with is 2.6.16.
63 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
64 powerpc POWER7. Implemented by Will Schmidt.
66 * New configure option --disable-nscd builds the C library such that it
67 never attempts to contact the Name Service Caching Daemon (nscd).
68 New configure option --disable-build-nscd avoids building nscd itself;
69 this is the default if --disable-nscd is used.
71 * Improved support for cross-compilation, including cross-testing and
72 bootstrap builds without a previously built glibc.
74 * Several testsuite tests are now able to test multiple IFUNC variants of an
75 interface, rather than just testing the one that would be chooen by
76 default.
78 * New configure options --with-bugurl and --with-pkgversion, for
79 distributors to use to embed their bug-reporting and package version
80 information in --help and --version output.
82 * The ttyname and ttyname_r functions on Linux now fall back to searching for
83 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
84 allows creation of chroots without the procfs mounted on /proc.
86 * The `crypt' function now fails if passed salt bytes that violate the
87 specification for those values. On Linux, the `crypt' function will
88 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
89 enabled, and fail on encrypted strings using the MD5 or DES algorithm
90 when the mode is enabled.
92 * The `clock_*' suite of functions (declared in <time.h>) is now available
93 directly in the main C library. Previously it was necessary to link with
94 -lrt to use these functions. This change has the effect that a
95 single-threaded program that uses a function such as `clock_gettime' (and
96 is not linked with -lrt) will no longer implicitly load the pthreads
97 library at runtime and so will not suffer the overheads associated with
98 multi-thread support in other code such as the C++ runtime library.
100 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
101 sat_IN, and szl_PL.
102 \f
103 Version 2.16
105 * The following bugs are resolved with this release:
107 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
108 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
109 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
110 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
111 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
112 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
113 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
114 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
115 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
116 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
117 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
118 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
119 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
120 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
121 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
122 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
123 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
124 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
125 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
126 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
127 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
128 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
129 14278.
131 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
132 configuring glibc with:
133 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
134 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
135 Implemented by H.J. Lu.
137 * ISO C11 support:
139 + define static_assert
141 + do not declare gets
143 + declare at_quick_exit and quick_exit also for ISO C11
145 + aligned_alloc. NB: The code is deliberately allows the size parameter
146 to not be a multiple of the alignment. This is a moronic requirement
147 in the standard but it is only a requirement on the caller, not the
148 implementation.
150 + timespec_get added
152 + uchar.h support added
154 + CMPLX, CMPLXF, CMPLXL added
156 Implemented by Ulrich Drepper.
158 * Support for the IA-64 has been moved to ports.
160 * Remove support for anything but ELF binary format
162 * Checking versions of poll, ppoll added.
163 Implemented by Ulrich Drepper.
165 * More generic and 64-bit performance optimizations to math functions.
166 Implemented by Ulrich Drepper.
168 * New configure option --enable-obsolete-rpc makes the deprecated RPC
169 headers and functions available at compile time as they were before
170 version 2.14. This option will be removed at some time in the future
171 after the TI-RPC library becomes fully sufficient for the needs of
172 existing applications.
174 * Compatibility code for Linux kernel versions before 2.4 has been removed.
175 Note that glibc is not expected to work with any Linux kernel version
176 before 2.6.
178 * New header <sys/auxv.h> and function getauxval allowing easy access to
179 the AT_* key-value pairs passed from the Linux kernel. The header also
180 defines the HWCAP_* bits associated with the AT_HWCAP key.
182 * New locales: mag_IN
184 * New configure option --enable-systemtap builds SystemTap static probes
185 into libc for setjmp and longjmp and into libpthread for various operations.
186 So far the setjmp/longjmp probes and some of the libpthread probes are
187 provided only for i*86 and x86_64.
188 Implemented by Roland McGrath and Rayson Ho.
190 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
192 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
193 and Will Schmidt.
195 * More optimized functions for SPARC. Implemented by David S. Miller.
197 * Improved support for cross-compilation, especially bootstrap builds
198 without a previously built glibc.
200 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
201 Chris Metcalf from Tilera.
203 * Support for the old ARM ABI has been removed from ports. Only the EABI is
204 now supported for ARM processors.
206 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
207 as the name of the dynamic linker, to distinguish it from the
208 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
210 * Support for CRIS has been removed from ports.
212 * A new class of installed header has been documented for low-level
213 platform-specific functionality. PowerPC added the first instance with a
214 function to provide time base register access. Contributed by Tulio
215 Magno Quites Machado Filho.
217 * ix86 configurations now install header files that are consistent with
218 what x86-64 configurations install. These same header files can be used
219 for -m32, -m64, or -mx32 builds.
220 Contributed by H.J. Lu.
222 * Math library bug fixes. A thorough audit of all open math library bugs was
223 conducted by Joseph Myers. Significant progress was made on many math
224 library bugs resulting in more accurate exceptions and function results.
225 Many thanks to all those that contributed including Andreas Jaeger for his
226 patch review and work on the x87 trigonometric instruction issues.
228 * Timezone data is no longer installed. Timezone-related binaries and scripts
229 will continue to be installed. Users should obtain their timezone data from
230 their distribution provider or from the tzdata package at
231 <ftp://munnari.oz.au/pub/>.
232 \f
233 Version 2.15
235 * The following bugs are resolved with this release:
237 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
238 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
239 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
240 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
241 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
242 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
243 13484, 13506, 13515, 13523, 13524, 13538, 13540
245 * New program pldd to list loaded object of a process
246 Implemented by Ulrich Drepper.
248 * Add nss_db support back to glibc. No more dependency on Berkeley db
249 and support for initgroups lookups.
250 Implemented by Ulrich Drepper.
252 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
253 Contributed by HJ Lu.
255 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
256 Contributed by HJ Lu.
258 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
259 on x86-32 and x86-64.
260 Contributed by Liubov Dmitrieva.
262 * Optimized strchr and strrchr for SSE on x86-32.
263 Contributed by Liubov Dmitrieva.
265 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
266 for x86-64 and x86-32.
267 Contributed by Liubov Dmitrieva.
269 * New interfaces: scandirat, scandirat64
270 Implemented by Ulrich Drepper.
272 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
273 Implemented by Ulrich Drepper.
275 * nscd now also caches the netgroup database.
276 Implemented by Ulrich Drepper.
278 * Integrate libm with gcc's -ffinite-math-only option.
279 Implemented by Ulrich Drepper.
281 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
282 to math functions. Implemented by Ulrich Drepper.
284 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
285 Implemented by Ulrich Drepper.
287 * New Linux interfaces: process_vm_readv, process_vm_writev
289 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
290 Implemented by Ulrich Drepper.
292 * Optimized nearbyint and strcasecmp for PPC.
293 Implemented by Adhemerval Zanella.
295 * New locales: bho_IN, unm_US, es_CU, ta_LK
296 \f
297 Version 2.14
299 * The following bugs are resolved with this release:
301 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
302 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
303 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
304 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
305 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
306 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
307 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
308 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
309 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
310 12795, 12811, 12813, 12814, 12841
312 * The RPC implementation in libc is obsoleted. Old programs keep working
313 but new programs cannot be linked with the routines in libc anymore.
314 Programs in need of RPC functionality must be linked against TI-RPC.
315 The TI-RPC implementation is IPv6 enabled and there are other benefits.
317 Visible changes of this change include (obviously) the inability to link
318 programs using RPC functions without referencing the TI-RPC library and the
319 removal of the RPC headers from the glibc headers.
320 Implemented by Ulrich Drepper.
322 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
323 syncfs, setns, sendmmsg
325 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
326 yue_HK, lij_IT, mhr_RU
328 * New encodings: CP770, CP771, CP772, CP773, CP774
330 * New program sotruss to trace calls through PLTs
331 Implemented by Ulrich Drepper.
333 * The malloc hook implementation is marked deprecated and will be removed
334 from the default implementation in the next version. The design never
335 worked ever since the introduction of threads. Even programs which do
336 not create threads themselves can use multiple threads created internally.
337 \f
338 Version 2.13
340 * The following bugs are resolved with this release:
342 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
343 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
344 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
345 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
346 12378, 12394, 12397
348 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
350 * POWER7 optimizations: memset, memcmp, strncmp
352 * New optimized string functions for x86-64: strnlen (SSE2),
353 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
354 Implemented by Ulrich Drepper.
355 \f
356 Version 2.12
358 * The following bugs are resolved with this release:
360 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
361 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
362 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
363 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
364 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
365 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
366 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
367 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
369 * New interfaces: pthread_getname_np, pthread_setname_np
371 * New Linux interface: recvmmsg
373 * STT_GNU_IFUNC implemented for Sparc by David Miller.
375 * The dynamic linker now recognizes supported ABI versions from the
376 EI_ABIVERSION field in the ELF header.
377 Implemented by Ulrich Drepper.
379 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
380 will not be used to fill in password fields in the passwd.byname replies.
381 Instead it is used to synthesize the shadow.byname table, should it be
382 missing. This is a useful mode in some installations involving Solaris.
383 Implemented by Ulrich Drepper.
385 * New locales: kok_IN, sq_MK, cv_RU
386 \f
387 Version 2.11
389 * The following bugs are resolved with this release:
391 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
392 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
393 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
394 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
395 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
396 10789, 10817, 10823, 10840, 10847
398 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
399 mkostemps64
400 Implemented by Ulrich Drepper.
402 * Checking version of longjmp added that fails if an uninitialized stack
403 frame would be created. Implemented by Ulrich Drepper.
405 * STT_GNU_IFUNC is now supported in static executables.
406 Implemented by H.J. Lu.
408 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
410 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
411 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
412 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
413 Contributed by H.J. Lu.
415 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
416 Implemented by Ulrich Drepper.
418 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
419 strstr, strcasestr.
420 Contributed by H.J. Lu.
422 * Support for fma instruction in AVX on x86-64.
423 Implemented by H.J. Lu and Ulrich Drepper.
425 * AVX support in x86-64 auditing support in ld.so.
426 Implemented by H.J. Lu.
428 * STB_GNU_UNIQUE support added.
429 Implemented by Ulrich Drepper.
431 * Implement second fallback mode for optimized DNS lookup for even more
432 broken environments. If two requests from the same port are not
433 handled correctly close the socket and open a new one before sending
434 the second request. The 'single-request-reopen' option in /etc/resolv.conf
435 can be used to select this mode right away, instead of rediscovering the
436 necessity is every process again.
437 Implemented by Ulrich Drepper.
439 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
440 Implemented by Adam Tkac.
442 * Optimized iconv conversions for S390x.
443 Implemented by Andreas Krebbel.
445 * Using condvars with PI mutexes is now more efficient due to kernel
446 support for requeueing to PI futexes. NPTL support added for x86-64.
447 Implemented by Ulrich Drepper.
449 * New locales: ps_AF, my_MM
450 \f
451 Version 2.10
453 * The following bugs are resolved with this release:
455 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
456 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
457 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
458 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
459 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
461 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
462 Implemented by Ulrich Drepper.
464 * New Linux interfaces: accept4, fallocate, fallocate64.
465 Implemented by Ulrich Drepper.
467 * Correct declarations of string function when used in C++ code. This
468 could lead to compile errors for invalid C++ code.
470 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
471 now in POSIX.
473 * New POSIX 2008 interface: psiginfo
474 Implemented by Ulrich Drepper.
476 * New ISO C++1x interfaces: quick_exit, at_quick_exit
477 Implemented by Ulrich Drepper.
479 * Support for selecting between multiple function definitions at runtime
480 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
482 * The libcrypt library can now use the hash function implementations in
483 NSS. Implemented by Ulrich Drepper.
485 * The malloc implementation can be compiled to be less memory efficient
486 but higher performing in multi-threaded programs.
487 Implemented by Ulrich Drepper.
489 * New locales: nan_TW@latin, ks_IN
491 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
492 Implemented by Ulrich Drepper.
494 * Extended printf hook support. It is possible to use user-defined types
495 and extend existing format specifiers.
496 Implemented by Ulrich Drepper.
498 * Handling for group shadow files has been added.
499 Implemented by Ulrich Drepper.
501 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
502 servers (the case, e.g., for some people using the built-in DNS
503 server in ADSL modems/routers). There is a once-per-process timeout
504 in case of a broken server. To avoid it, users can run nscd or put
505 'options single-request' in /etc/resolv.conf.
506 Implemented by Ulrich Drepper.
507 \f
508 Version 2.9
510 * The following bugs are resolved with this release:
512 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
513 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
514 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
515 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
516 6968, 6974, 6980, 6995, 7008, 7009, 7029
518 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
519 up at the same time. Implemented by Ulrich Drepper.
521 * TLS descriptors for LD and GD on x86 and x86-64.
522 Implemented by Alexandre Oliva.
524 * getaddrinfo now handles DCCP and UDPlite.
525 Implemented by Ulrich Drepper.
527 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
528 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
529 Implemented by Ulrich Drepper.
531 * New implementation of memmem, strstr, and strcasestr which is O(n).
532 Implemented by Eric Blake.
534 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
536 * Implement "e" option for popen to open file descriptor with the
537 close-on-exec flag set. Implemented by Ulrich Drepper.
539 * Implement "b" mode for fmemopen. In this mode writes writes don't
540 implicitly add a NUL byte and seeks from the end of the buffer really
541 use the buffer end, not the string length as the basis.
542 Implemented by Ulrich Drepper.
544 * Many functions, exported and internal, now atomically set the close-on-exec
545 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
547 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
548 Sinhala)
549 Implemented by Pravin Satpute.
551 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
552 \f
553 Version 2.8
555 * The following bugs are resolved with this release:
557 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
558 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
559 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
560 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
561 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
562 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
563 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
565 * New locales: bo_CN, bo_IN, shs_CA.
567 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
569 * Sorting rules for some Indian languages (Devanagari and Gujarati).
570 Implemented by Pravin Satpute.
572 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
574 * nscd caches now all timeouts for DNS entries
575 Implemented by Ulrich Drepper.
577 * nscd is more efficient and wakes up less often.
578 Implemented by Ulrich Drepper.
580 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
581 vdprintf, and obstack_vprintf.
582 Implemented by Jakub Jelinek.
584 * Faster memset for x86-64.
585 Implemented by Harsha Jagasia and H.J. Lu.
587 * Faster memcpy on x86.
588 Implemented by Ulrich Drepper.
590 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
591 Implemented by Ulrich Drepper.
593 * Faster sqrt and sqrtf implemention for some PPC variants.
594 Implemented by Steven Munroe.
595 \f
596 Version 2.7
598 * The following bugs are resolved with this release:
600 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
601 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
602 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
603 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
604 5071, 5103, 5104, 5112, 5113, 5184, 5186
606 * More checking functions: fread, fread_unlocked, open*, mq_open.
607 Implemented by Jakub Jelinek and Ulrich Drepper.
609 * Extend fortification to C++. Implemented by Jakub Jelinek.
611 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
612 by not recognizing 'a' as a modifier when those specs are requested.
613 Implemented by Jakub Jelinek.
615 * PPC optimizations to math and string functions.
616 Implemented by Steven Munroe.
618 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
619 options to be passed. Implemented by Ulrich Drepper.
621 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
623 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
624 Implemented by Ulrich Drepper.
626 * Handle private futexes in the NPTL implementation.
627 Implemented by Jakub Jelinek and Ulrich Drepper.
629 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
630 Implemented by Roland McGrath and Ulrich Drepper.
632 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
634 * SHA-256 and SHA-512 based password encryption.
635 Implemented by Ulrich Drepper.
637 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
638 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
639 yo_NG.
641 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
642 Implemented by Ulrich Drepper.
643 \f
644 Version 2.6
646 * The following bugs are resolved with this release:
648 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
649 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
650 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
651 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
652 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
653 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
654 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
655 4702, 4858
657 * New Linux interfaces: epoll_pwait, sched_getcpu.
659 * New generic interfaces: strerror_l.
661 * nscd can now cache the services database. Implemented by Ulrich Drepper.
662 \f
663 Version 2.5
665 * The following bugs are resolved with this release:
667 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
668 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
669 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
670 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
671 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
672 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
673 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
674 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
675 3225, 3251, 3252, 3253, 3273
677 * For Linux, the sorting of addresses returned by getaddrinfo now also
678 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
679 Implemented by Ulrich Drepper.
681 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
682 Implemented by Ulrich Drepper.
684 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
686 * New iconv module for MIK. Contributed by Alexander Shopov.
688 * For sites with broken group and/or passwd database, the auto-propagate
689 option of nscd can prevent creating ID lookup entries from the results
690 of a name lookup and vice versa. This usually is no problem but some
691 site might have problems with the default behavior.
692 Implemented by Ulrich Drepper.
694 * Iterating over entire database in NIS can be slow. With the
695 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
696 to trade time for memory. The entire database will be read at once.
697 Implemented by Ulrich Drepper.
699 * The interfaces introduced in RFC 3542 have been implemented by
700 Ulrich Drepper.
702 * Support for the new ELF hash table format was added by Ulrich Drepper.
704 * Support for priority inheritance mutexes added by Jakub Jelinek and
705 Ulrich Drepper.
707 * Support for priority protected mutexes added by Jakub Jelinek.
709 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
710 or_IN, csb_PL, fy_NL, sr_ME.
711 \f
712 Version 2.4
714 * More overflow detection functions.
716 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
717 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
719 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
720 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
721 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
722 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
723 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
724 by Masahide Washizawa.
726 * It is now possible to install audit libraries for the dynamic linker using
727 LD_AUDIT. Implemented by Ulrich Drepper.
729 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
730 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
731 For a libc and libpthread that works well on Linux 2.4 kernels, we
732 recommend using the stable 2.3 branch.
734 * The new function open_wmemstream acts like open_memstream,
735 but uses a wchar_t wide character buffer.
737 * The new function ppoll is an improved version of poll, similar to pselect.
739 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
740 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
741 renameat, unlinkat, linkat, symlinkat, readlinkat.
743 * New Linux kernel system calls: unshare,
744 inotify_init, inotify_add_watch, inotify_rm_watch.
746 * The euidaccess function is now also known by the alias eaccess,
747 for compatibility with some other systems.
749 * Timezone data updated to 2006b version.
750 \f
751 Version 2.3.6
753 * The following bugs are resolved with this release:
755 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
756 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
757 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
758 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
759 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
760 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
762 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
764 * As of this release, GCC 4 can be used to compile the C Library.
766 * Timezone data updated to 2005m version.
767 \f
768 Version 2.3.5
770 * The following bugs are resolved with this release:
772 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
773 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
774 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
775 777, 787, 821, 822, 823, 825
777 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
778 \f
779 Version 2.3.4
781 * Support for RFC 3678. Real implementations exist only for Linux so far.
782 Implemented by Ulrich Drepper.
784 * nscd can now cache entries persistently. Expiring entries are reloaded.
785 For speedups the cache can be shared in memory with client processes.
786 Implemented by Ulrich Drepper.
788 * nscd can now perform SELinux checks.
789 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
791 * getaddrinfo queries are now cached. Canonical name lookup is performed
792 efficiently.
793 Implemented by Ulrich Drepper.
795 * The nothrow function attribute is used when headers are used by gcc when
796 compiling C code. This can avoid significant amounts of exception
797 handling data.
799 * The malloc functions perform more error checking and are stricter when
800 it comes to reacting on errors. The default action is to terminate
801 the process after showing an error message. Implemented by Ulrich Drepper.
803 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
804 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
806 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
807 namespaces using the new function dlmopen(). This feature is of course,
808 like most other dynamic loading functionality, not available in statically
809 linked applications. Implemented by Ulrich Drepper.
811 * Low-overhead boundary checking variants of string and some stdio functions
812 were added. These are to be used in conjunction with a gcc patch by
813 Jakub Jelinek which adds calls to these functions if possible.
814 Implemented by Jakub Jelinek and Ulrich Drepper.
816 * Old code for several operating systems and machine architectures that
817 have not been in working condition in a long time have been removed from
818 the main source tree maintained by the GNU C Library's maintainers.
819 These files are now reside in the separate `ports' source module
820 that is usable as an add-on when building the library.
821 \f
822 Version 2.3.3
824 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
825 interrogate the dynamic linker, compatible with the Solaris interface.
827 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
828 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
830 * getifaddrs now uses the netlink interface on Linux to get its information.
831 Implemented by Thorsten Kukuk.
833 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
834 Implemented by Ulrich Drepper.
836 * support for non-executable stacks on x86 has been added. Changes mostly
837 by Roland McGrath.
839 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
840 and Ulrich Drepper.
842 * getaddrinfo now performs destination address selection according to
843 RFC 3484.
844 \f
845 Version 2.3.2
847 * Thread-safe interfaces for many functions that access locale data
848 were added in version 2.3, but these features were omitted from NEWS.
849 Many functions have variants with an `_l' suffix that take a `locale_t'
850 object as a parameter rather than consulting the current locale.
851 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
852 create and maintain `locale_t' objects. Additionally, the new function
853 `uselocale' sets "the current locale" (as used by functions not so
854 parameterized) set for an individual thread. These features were added
855 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
857 * The functions getresuid, getresgid, setresuid, and setresgid, which
858 have long been available on Linux, are now declared in <unistd.h>
859 and are now also available on the Hurd.
861 * ELF thread-local storage support (TLS) now works on x86-64.
863 * The new dynamic string token $LIB is expanded in shared library names.
864 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
866 * Aldy Hernandez contributed complete software floating point support for
867 PowerPC machines with no FPU.
869 * fexecve is implemented on Linux.
871 * The `btowc' function should work at least twice as fast due to
872 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
874 * With approriate thread add-ons cancelable functions are now implemented
875 in libc.so as well. No need to call the function in libpthread. This
876 change allowed to finally disable the incorrect and expensive handling
877 of weak definition in ld.so.
879 * Yet more PLT entries in libc.so have been removed. We finally arrived
880 at the bare minimum. Startup times improved appropriately.
882 * Support for the new Linux/x86 system call interface was added. The
883 AT_SYSINFO auxiliary vector entry is recognized and handled.
884 \f
885 Version 2.3
887 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
888 charsets.
890 * iconv (the program and the interface) now accepts empty names (excluding
891 options like //TRANSLIT) to mean "use charset of current locale".
893 * localedef can now transliterate characters in strings which are not in
894 the provided charmap. The information from the input locale is used.
896 * Prelinking support was added for ELF targets. This requires additional
897 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
899 * Read-only stdio streams now use mmap to speed up operation by eliminating
900 copying and buffer underflows. To use add 'm' to the mode string of
901 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
903 * The malloc functions were completely rewritten by Wolfram Gloger based
904 on Doug Lea's malloc-2.7.0.c.
906 * Isamu Hasegawa contributed a completely new and POSIX-conformant
907 implementation of regex.
909 * Bruno Haible upgraded the iconv and locale implementation to support
910 Unicode 3.2.
912 * Contents of the LC_* and LANG environment variables in the CEN style are
913 not recognized anymore. It never was used. Change by Ulrich Drepper.
915 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
916 thread-local storage (TLS) ABI on some platforms.
917 Changes by Ulrich Drepper. SH support by Kaz Kojima.
919 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
920 EUC-JISX0213, and TSCII.
922 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
923 BSD-compatible interface for getting all network interface addresses.
924 Implementation for IPv4 by Roland McGrath.
926 * Loading of locale data is faster due to the introduction of a locale
927 archive. Implemented by Roland McGrath and Ulrich Drepper.
929 * Startup times are significantly reduced by not using exported functions
930 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
931 and Ulrich Drepper.
933 * Steven Munroe contributed a port to PowerPC64/Linux.
934 \f
935 Version 2.2.6
937 * The Hurd now uses the GNU libio implementation of stdio rather than the
938 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
940 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
941 with the same behavior as the Linux system call of the same name.
942 \f
943 Version 2.2.5
945 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
946 128-bit long double format.
948 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
949 IBM1161, and IBM1162 charsets.
951 * Andreas Jaeger contributed a port to x86-64/Linux.
953 * Peter Bruin contributed a port to PowerPC/Hurd.
955 * libc functions using I/O streams now can handle wide-oriented streams
956 as well.
958 * optimizations in the dynamic linker. Binaries created by recent binutils
959 versions start up quicker due to reduced time spent on relocations.
961 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
962 \f
963 Version 2.2.4
965 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
966 asinh, atanh, j0 for the 128-bit long double format.
968 * Bruno Haible updated all the code handling Unicode in some form to
969 support Unicode 3.1.
971 * Speed of regex for single-byte locales is back to previous levels.
972 Patch by Isamu Hasegawa.
974 * Alpha, SPARC, and IA-64 now also using floating stacks.
976 * Startup time of internationalized applications greatly improved through
977 iconv cache. Use iconvconfig to generate the cache file.
978 Contributed by Ulrich Drepper.
980 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
981 severe performance problems. Patch by David Mosberger.
983 * The Hurd port got a lot more functionality like AIO, various stdio
984 extensions, etc. Mainly done by Roland McGrath.
986 * mtrace can now lookup symbols in shared libraries.
987 \f
988 Version 2.2.3
990 * Intel's IA-64 math library is largely integrated. It provides fast and
991 accurate implementatations for most basic and standard math functions
992 in float, double, and long double format.
994 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
995 and asin for the 96-bit long double format and asin, log, tan for the
996 128-bit long double format.
998 * The beginning of a last-bit accurate math library by IBM Haifa were added.
999 The basic double functions exist today. Contributed by Abraham Ziv
1000 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1001 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1003 * An asynchronous name lookup library was added. The interface is designed
1004 after POSIX AIO. The proposal was circulated beforehand to get comments.
1005 No negative ones came in. Implemented by Ulrich Drepper.
1007 * Port to S390/64bit contributed by Martin Schwidefsky
1008 <schwidefsky@de.ibm.com>.
1010 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1011 of functions for Linux/IA-64.
1013 * The RPC code is now thread safe. Threads can now use the same service
1014 of different services at the same time. Patch by Eric Norum
1015 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1017 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1018 family of functions for Linux/S390.
1020 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1021 of functions for Linux/x86.
1023 * Port to Linux/CRIS contributed by Axis Communications.
1024 \f
1025 Version 2.2.2
1027 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1028 we can now check for namespace violations and missing declarations. The
1029 result is that almost all headers are now Unix-compliant (as defined in
1030 the upcoming XPG6). The negative side is that some programs might need
1031 corrections, too, if they depend on the incorrect form of the headers in
1032 previous versions which defined too many symbols and included too many
1033 other headers.
1035 * regex now handles multibyte character sets correctly.
1036 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1038 * iconv (the program) does now conform to the upcoming XPG6 and handles
1039 charmaps. Instead of the charset names the path of charmaps can be
1040 provided and the conversion happens based on this data.
1041 Contributed by Ulrich Drepper.
1043 * The locale program now provides detailed information about the installed
1044 locales. While
1046 locale -a
1048 only lists the names of the supported locales
1050 locale -a --verbose
1052 provides details such as country, language, and codeset name.
1053 Contributed by Ulrich Drepper.
1054 \f
1055 Version 2.2.1
1057 * The gencat program now parses the input file according to the charset
1058 selected by the LC_CTYPE category. This is important for stateful
1059 character sets. To make generating catalogs easier there is a way
1060 to overwrite the charset selected by the locale: before the first
1061 message or $ quote line the catalog can contain a line like
1063 $ codeset=ISO-8859-2
1065 to select the charset (ISO-8859-2 in this case).
1067 Implemented by Shinya Hanataka and Ulrich Drepper.
1069 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1070 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1071 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1073 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1074 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1076 * The LANGUAGE environment variable is now ignored unless the locale is
1077 changed from the default "C" locale.
1079 * The usual bug fixes.
1080 \f
1081 Version 2.2
1083 * Greg McGary added runtime support for bounds checking using gcc's
1084 new -fbounded-pointers option. ix86 target is complete. PowerPC
1085 is in progress.
1087 * Thorsten Kukuk added secure mode support to nscd.
1089 * The Berkeley db libraries have been removed.
1091 Related, the nss_db module is now in a separate package since it
1092 obviously requires a database library being available.
1094 * Wide character I/O streams implemented by Ulrich Drepper.
1096 * Functions from the extended socket API added by Ulrich Drepper.
1098 * Functions feenableexcept and fedisableexcept to control the
1099 behaviour of individual exceptions have been added by Andreas Jaeger.
1101 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1103 * The resolver code has been updated from bind 8.2.3-T5B which supports
1104 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1105 and Mark Kettenis.
1107 This change could in some situations effect backward compatibility. Since
1108 now `_res' is a thread-local instead of a global variable, modifying it
1109 in one thread does not have any effect in other threads.
1111 The resolver library was also extended to allow IPv6 as the transport
1112 protocol for the requests. This work was done by Stig Venaas.
1114 * Compatibility code for K&R C compilers has been removed from the
1115 header files. A ISO C compiler is needed to use the library
1116 (conforming to either C89 or C99 standard).
1118 * Complete rewrite of the localedef program to support multibyte character
1119 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1120 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1121 Implemented by Ulrich Drepper.
1123 Bruno Haible significantly improved the generation and use of the data
1124 structures for the wide character tables.
1126 * Plural handling in gettext implemented by Ulrich Drepper.
1128 * The utmp daemon has been removed.
1130 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1132 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1133 and Yutaka Niibe.
1135 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1137 * POSIX barriers implemented by Kaz Kylheku.
1139 * POSIX spawn function family implemented by Ulrich Drepper.
1141 * POSIX spinlocks are now available.
1143 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1145 * the configure option --enable-kernel=X.Y.Z allows to strip out
1146 compatibility for kernel versions before X.Y.Z. This is currently only
1147 implemented for Linux.
1149 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1150 field sin6_scope_id. This means that all programs using IPv6 should be
1151 recompiled. Don't expect binary compatibility with previous glibc
1152 versions.
1154 * various conversion modules for IBM character sets contributed by
1155 Masahide Washizawa.
1157 * IA-64 port by Jes Sorensen and HJ Lu.
1158 \f
1159 Version 2.1.3
1161 * bug fixes
1163 \f
1164 Version 2.1.2
1166 * bug fixes
1168 \f
1169 Version 2.1.1
1171 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1173 * New xdr functions are added; some rpc functions are now 64bit clean.
1175 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1177 * Fixed known incompatibilities with glibc 2.0.
1179 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1181 * Optimized a number of functions (especially the ELF dynamic loader).
1183 * Update timezone data files.
1185 * lots of charmaps corrections
1187 * some new locale definitions and charmaps
1189 \f
1190 Version 2.1
1192 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1193 conform to POSIX member type requirements. Symbol versions have been
1194 adjusted as needed within the library, and for direct use by applications,
1195 but there is potential for problems if third-party libraries use
1196 struct timeval as part of their interface. This does not present
1197 a problem for X and other "essential" system libraries.
1199 * An additional locale model to support C++ Standard Library locale
1200 model and probably more was implemented by Ulrich Drepper.
1202 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1203 symbol level.
1205 * Miles Bader provided the `argp' function family to support hierachical
1206 command line argument parsing, layered on top of getopt.
1208 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1210 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1211 numbers.
1213 * scanf recognizes the %a and %A format for scanning floating point numbers.
1215 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1216 information and interfaces for the available integer types.
1218 * about 130 new math functions were added to implement the ISO C9x math
1219 library.
1221 * the new header <complex.h> contains definitions of the complex math
1222 functions from ISO C 9X.
1224 * the new header <tgmath.h> defines generic macros to use complex or
1225 real valued functions.
1227 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1229 * Andreas Jaeger provided a test suite for the math library.
1231 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1233 * Ulrich Drepper added character set conversion functions (iconv).
1235 * Optimized string functions have been added.
1237 * The localedata addon is now part of glibc.
1239 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1241 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1242 daemon for NSS (nscd).
1244 Missing a better place here are some numbers on improvements. Under
1245 Linux 2.1.125 un-tar-ing the kernel sources takes
1247 user system wall
1249 using local files 12.19s 6.88s 22.91s
1251 using NIS 13.92s 8.91s 26.34s
1253 using NIS & nscd 10.37s 7.34s 25.30s
1255 using NIS+ 27.57s 30.37s 640.46s
1257 using NIS+ & nscd 10.25s 7.83s 26.51s
1259 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1261 Keep in mind that non-namelookup related operations dominate above times.
1262 It was just a common complain that using NIS+ unpacking the kernel is
1263 horribly slow.
1265 [1] The old nscd implementation is not available anymore since it was
1266 distributed with glibc up to version 2.0.98 and thus is now replaced.
1268 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1270 * Mark Kettenis provided a Hesiod NSS module.
1272 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1273 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1275 * rcmd can now handle netgroups (Dick Streefland).
1277 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1278 Bambrough.
1280 * Support for the IPv6 protocol has been added to the socket API, as per the
1281 latest draft standards.
1283 * Support for Linux 2.2 has been added.
1285 * Interface changes relative to the latest 2.0.x release:
1286 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1287 addseverity NEW: Unix98
1288 alphasort64 NEW: LFS
1289 argp_err_exit_status NEW: argp, GNU ext
1290 argp_error NEW: argp, GNU ext
1291 argp_failure NEW: argp, GNU ext
1292 argp_help NEW: argp, GNU ext
1293 argp_parse NEW: argp, GNU ext
1294 argp_program_bug_address NEW: argp, GNU ext
1295 argp_program_version NEW: argp, GNU ext
1296 argp_program_version_hook NEW: argp, GNU ext
1297 argp_state_help NEW: argp, GNU ext
1298 argp_usage NEW: argp, GNU ext
1299 authdes_create NEW: Secure RPC
1300 authdes_getucred NEW: Secure RPC
1301 authdes_pk_create NEW: Secure RPC
1302 backtrace NEW: GNU ext.
1303 backtrace_symbols NEW: GNU ext.
1304 backtrace_symbols_fd NEW: GNU ext.
1305 cacos NEW: ISO C 9x
1306 cacosf NEW: ISO C 9x
1307 cacosh NEW: ISO C 9x
1308 cacoshf NEW: ISO C 9x
1309 cacoshl NEW: ISO C 9x
1310 cacosl NEW: ISO C 9x
1311 capget NEW: kernel
1312 capset NEW: kernel
1313 carg NEW: ISO C 9x
1314 cargf NEW: ISO C 9x
1315 cargl NEW: ISO C 9x
1316 casin NEW: ISO C 9x
1317 casinf NEW: ISO C 9x
1318 casinh NEW: ISO C 9x
1319 casinhf NEW: ISO C 9x
1320 casinhl NEW: ISO C 9x
1321 casinl NEW: ISO C 9x
1322 catan NEW: ISO C 9x
1323 catanf NEW: ISO C 9x
1324 catanh NEW: ISO C 9x
1325 catanhf NEW: ISO C 9x
1326 catanhl NEW: ISO C 9x
1327 catanl NEW: ISO C 9x
1328 cbc_crypt NEW: Secure RPC
1329 ccos NEW: ISO C 9x
1330 ccosf NEW: ISO C 9x
1331 ccosh NEW: ISO C 9x
1332 ccoshf NEW: ISO C 9x
1333 ccoshl NEW: ISO C 9x
1334 ccosl NEW: ISO C 9x
1335 cexp NEW: ISO C 9x
1336 cexpf NEW: ISO C 9x
1337 cexpl NEW: ISO C 9x
1338 cimag NEW: ISO C 9x
1339 cimagf NEW: ISO C 9x
1340 cimagl NEW: ISO C 9x
1341 clearerr_locked REMOVED
1342 clntunix_create NEW: sunrpc ext
1343 clog NEW: ISO C 9x
1344 clog10 NEW: ISO C 9x
1345 clog10f NEW: ISO C 9x
1346 clog10l NEW: ISO C 9x
1347 clogf NEW: ISO C 9x
1348 clogl NEW: ISO C 9x
1349 conj NEW: ISO C 9x
1350 conjf NEW: ISO C 9x
1351 conjl NEW: ISO C 9x
1352 cpow NEW: ISO C 9x
1353 cpowf NEW: ISO C 9x
1354 cpowl NEW: ISO C 9x
1355 cproj NEW: ISO C 9x
1356 cprojf NEW: ISO C 9x
1357 cprojl NEW: ISO C 9x
1358 creal NEW: ISO C 9x
1359 crealf NEW: ISO C 9x
1360 creall NEW: ISO C 9x
1361 creat64 NEW: LFS
1362 csin NEW: ISO C 9x
1363 csinf NEW: ISO C 9x
1364 csinh NEW: ISO C 9x
1365 csinhf NEW: ISO C 9x
1366 csinhl NEW: ISO C 9x
1367 csinl NEW: ISO C 9x
1368 csqrt NEW: ISO C 9x
1369 csqrtf NEW: ISO C 9x
1370 csqrtl NEW: ISO C 9x
1371 ctan NEW: ISO C 9x
1372 ctanf NEW: ISO C 9x
1373 ctanh NEW: ISO C 9x
1374 ctanhf NEW: ISO C 9x
1375 ctanhl NEW: ISO C 9x
1376 ctanl NEW: ISO C 9x
1377 des_setparity NEW: Secure RPC
1378 ecb_crypt NEW: Secure RPC
1379 endutxent NEW: Unix98
1380 exp10 NEW: ISO C 9x
1381 exp10f NEW: ISO C 9x
1382 exp10l NEW: ISO C 9x
1383 exp2 NEW: ISO C 9x
1384 exp2f NEW: ISO C 9x
1385 exp2l NEW: ISO C 9x
1386 fattach NEW: STREAMS
1387 fdetach NEW: STREAMS
1388 fdim NEW: ISO C 9x
1389 fdimf NEW: ISO C 9x
1390 fdiml NEW: ISO C 9x
1391 feclearexcept NEW: ISO C 9x
1392 fegetenv NEW: ISO C 9x
1393 fegetexceptflag NEW: ISO C 9x
1394 fegetround NEW: ISO C 9x
1395 feholdexcept NEW: ISO C 9x
1396 feof_locked REMOVED
1397 feraiseexcept NEW: ISO C 9x
1398 ferror_locked REMOVED
1399 fesetenv NEW: ISO C 9x
1400 fesetexceptflag NEW: ISO C 9x
1401 fesetround NEW: ISO C 9x
1402 fetestexcept NEW: ISO C 9x
1403 feupdateenv NEW: ISO C 9x
1404 fflush_locked REMOVED
1405 ffsl NEW: GNU ext.
1406 ffsll NEW: GNU ext.
1407 fgetpos64 NEW: LFS
1408 fgets_unlocked NEW: GNU ext.
1409 fileno_locked REMOVED
1410 fma NEW: ISO C 9x
1411 fmaf NEW: ISO C 9x
1412 fmal NEW: ISO C 9x
1413 fmax NEW: ISO C 9x
1414 fmaxf NEW: ISO C 9x
1415 fmaxl NEW: ISO C 9x
1416 fmin NEW: ISO C 9x
1417 fminf NEW: ISO C 9x
1418 fminl NEW: ISO C 9x
1419 fmtmsg NEW: Unix98
1420 fopen64 NEW: LFS
1421 fputc_locked REMOVED
1422 fputs_unlocked NEW: GNU ext.
1423 fread_unlocked NEW: GNU ext.
1424 freopen64 NEW: LFS
1425 fseeko NEW: Unix98
1426 fsetpos64 NEW: LFS
1427 fstatfs64 NEW: LFS
1428 fstatvfs NEW: Unix98
1429 fstatvfs64 NEW: LFS
1430 ftello NEW: Unix98
1431 ftello64 NEW: LFS
1432 ftruncate64 NEW: LFS
1433 ftw64 NEW: LFS
1434 fwrite_unlocked NEW: GNU ext.
1435 gai_strerror NEW: IPv6
1436 gamma_r REMOVED
1437 gammaf_r REMOVED
1438 gammal_r REMOVED
1439 getchar_locked REMOVED
1440 getdate NEW: Unix98
1441 getdate_err NEW: Unix98
1442 getdate_r NEW: GNU ext.
1443 getmsg NEW: STREAMS
1444 getnameinfo NEW: IPv6
1445 getnetname NEW: Secure RPC
1446 getpmsg NEW: STREAMS
1447 getpt NEW: Unix98 PTY
1448 getrlimit64 NEW: LFS
1449 getutxent NEW: Unix98
1450 getutxid NEW: Unix98
1451 getutxline NEW: Unix98
1452 glob64 NEW: GNU ext.
1453 globfree64 NEW: GNU ext.
1454 gnu_get_libc_release NEW: GNU ext.
1455 gnu_get_libc_version NEW: GNU ext.
1456 grantpt NEW: Unix98 PTY
1457 host2netname NEW: Secure RPC
1458 iconv NEW: iconv
1459 iconv_close NEW: iconv
1460 iconv_open NEW: iconv
1461 if_freenameindex NEW: IPv6
1462 if_indextoname NEW: IPv6
1463 if_nameindex NEW: IPv6
1464 if_nametoindex NEW: IPv6
1465 in6addr_any NEW: IPv6
1466 in6addr_loopback NEW: IPv6
1467 inet6_isipv4mapped NEW: IPv6
1468 isastream NEW: STREAMS
1469 iswblank NEW: GNU ext.
1470 key_decryptsession NEW: Secure RPC
1471 key_decryptsession_pk NEW: Secure RPC
1472 key_encryptsession NEW: Secure RPC
1473 key_encryptsession_pk NEW: Secure RPC
1474 key_gendes NEW: Secure RPC
1475 key_get_conv NEW: Secure RPC
1476 key_secretkey_is_set NEW: Secure RPC
1477 key_setnet NEW: Secure RPC
1478 key_setsecret NEW: Secure RPC
1479 llrint NEW: ISO C 9x
1480 llrintf NEW: ISO C 9x
1481 llrintl NEW: ISO C 9x
1482 llround NEW: ISO C 9x
1483 llroundf NEW: ISO C 9x
1484 llroundl NEW: ISO C 9x
1485 log2 NEW: ISO C 9x
1486 log2f NEW: ISO C 9x
1487 log2l NEW: ISO C 9x
1488 lrint NEW: ISO C 9x
1489 lrintf NEW: ISO C 9x
1490 lrintl NEW: ISO C 9x
1491 lround NEW: ISO C 9x
1492 lroundf NEW: ISO C 9x
1493 lroundl NEW: ISO C 9x
1494 lseek64 NEW: LFS
1495 makecontext NEW: Unix98
1496 mempcpy NEW: GNU ext.
1497 mmap64 NEW: LFS
1498 moncontrol REMOVED
1499 modify_ldt NEW: kernel
1500 nan NEW: ISO C 9x
1501 nanf NEW: ISO C 9x
1502 nanl NEW: ISO C 9x
1503 nearbyint NEW: ISO C 9x
1504 nearbyintf NEW: ISO C 9x
1505 nearbyintl NEW: ISO C 9x
1506 netname2host NEW: Secure RPC
1507 netname2user NEW: Secure RPC
1508 nexttoward NEW: ISO C 9x
1509 nexttowardf NEW: ISO C 9x
1510 nexttowardl NEW: ISO C 9x
1511 nftw NEW: Unix98
1512 nftw64 NEW: LFS
1513 open64 NEW: LFS
1514 passwd2des NEW: Secure RPC
1515 pow10 NEW: GNU ext.
1516 pow10f NEW: GNU ext.
1517 pow10l NEW: GNU ext.
1518 pread NEW: Unix98
1519 pread64 NEW: LFS
1520 printf_size NEW: GNU ext.
1521 printf_size_info NEW: GNU ext.
1522 profil_counter REMOVED
1523 pthread_mutexattr_getkind_np REPLACED
1524 pthread_mutexattr_setkind_np REPLACED
1525 ptsname NEW: Unix98 PTY
1526 ptsname_r NEW: Unix98 PTY
1527 putc_locked REMOVED
1528 putchar_locked REMOVED
1529 putgrent NEW: GNU ext.
1530 putmsg NEW: STREAMS
1531 putpmsg NEW: STREAMS
1532 pututxline NEW: Unix98
1533 pwrite NEW: Unix98
1534 pwrite64 NEW: LFS
1535 readdir64 NEW: LFS
1536 readdir64_r NEW: LFS
1537 remquo NEW: ISO C 9x
1538 remquof NEW: ISO C 9x
1539 remquol NEW: ISO C 9x
1540 round NEW: ISO C 9x
1541 roundf NEW: ISO C 9x
1542 roundl NEW: ISO C 9x
1543 rtime NEW: GNU ext.
1544 scalbln NEW: ISO C 9x
1545 scalblnf NEW: ISO C 9x
1546 scalblnl NEW: ISO C 9x
1547 scandir64 NEW: LFS
1548 sendfile NEW: kernel
1549 setcontext NEW: Unix98
1550 setrlimit64 NEW: LFS
1551 setutxent NEW: Unix98
1552 sighold NEW: Unix98
1553 sigignore NEW: Unix98
1554 sigqueue NEW: POSIX.1b
1555 sigrelse NEW: Unix98
1556 sigset NEW: POSIX.1b
1557 sigtimedwait NEW: POSIX.1b
1558 sigwaitinfo NEW: POSIX.1b
1559 sincos NEW: GNU ext.
1560 sincosf NEW: GNU ext.
1561 sincosl NEW: GNU ext.
1562 statfs64 NEW: LFS
1563 statvfs NEW: Unix98
1564 statvfs64 NEW: LFS
1565 strcasestr NEW: GNU ext.
1566 strtoimax NEW: ISO C 9x
1567 strtoumax NEW: ISO C 9x
1568 strverscmp NEW: GNU ext.
1569 svcauthdes_stats NEW: Secure RPC
1570 svcunix_create NEW: sunrpc etx
1571 svcunixfd_create NEW: sunrpc ext
1572 swapcontext NEW: Unix98
1573 tcgetsid NEW: Unix98 PTY
1574 tdestroy NEW: GNU ext.
1575 tgamma NEW: ISO C 9x
1576 tgammaf NEW: ISO C 9x
1577 tgammal NEW: ISO C 9x
1578 tmpfile64 NEW: LFS
1579 trunc NEW: ISO C 9x
1580 truncate64 NEW: LFS
1581 truncf NEW: ISO C 9x
1582 truncl NEW: ISO C 9x
1583 umount2 NEW: kernel
1584 unlockpt NEW: Unix98 PTY
1585 updwtmpx NEW: Unix98
1586 user2netname NEW: Secure RPC
1587 utmpxname NEW: Unix98
1588 versionsort NEW: GNU ext.
1589 versionsort64 NEW: GNU ext.
1590 waitid NEW: Unix98
1591 wcscasecmp NEW: GNU ext.
1592 wcsncasecmp NEW: GNU ext.
1593 wcsnlen NEW: GNU ext.
1594 wcstoimax NEW: ISO C 9x
1595 wcstoll NEW: ISO C 9x
1596 wcstoull NEW: ISO C 9x
1597 wcstoumax NEW: ISO C 9x
1598 wcswcs NEW: Unix98
1599 wordexp NEW: POSIX.2
1600 wordfree NEW: POSIX.2
1601 write_profiling REMOVED
1602 xdecrypt NEW: Secure RPC
1603 xdr_authdes_cred NEW: Secure RPC
1604 xdr_authdes_verf NEW: Secure RPC
1605 xdr_cryptkeyarg NEW: Secure RPC
1606 xdr_cryptkeyarg2 NEW: Secure RPC
1607 xdr_cryptkeyres NEW: Secure RPC
1608 xdr_getcredres NEW: Secure RPC
1609 xdr_key_netstarg NEW: Secure RPC
1610 xdr_key_netstres NEW: Secure RPC
1611 xdr_keybuf NEW: Secure RPC
1612 xdr_keystatus NEW: Secure RPC
1613 xdr_netnamestr NEW: Secure RPC
1614 xdr_sizeof NEW: Secure RPC
1615 xdr_unixcred NEW: sunrpc ext
1616 xencrypt NEW: Secure RPC
1617 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1618 \f
1619 Version 2.0.6
1621 * more bug fixes
1623 \f
1624 Version 2.0.5
1626 * more bug fixes
1628 * inet_ntoa is thread-safe
1630 * updwtmp is moved from libutil to libc
1632 * rewrite of cbrt function
1634 * update of timezone data
1635 \f
1636 Version 2.0.4
1638 * more bug fixes
1639 \f
1640 Version 2.0.3
1642 * more bug fixes
1643 \f
1644 Version 2.0.2
1646 * more bug fixes
1648 * add atoll function
1650 * fix complex problems in Berkeley DB code
1652 * fix math functions
1653 \f
1654 Version 2.0.1
1656 * fixed lots of header problems (especially Linux/GNU specific)
1658 * dynamic loader preserves all registers
1660 * Roland McGrath provided support for handling of auxiliary objects in
1661 the ELF dynamic loader.
1663 * support for parallel builds is improved
1664 \f
1665 Version 2.0
1667 * GNU extensions are no longer declared by default. To enable them you
1668 must define the macro `_GNU_SOURCE' in your program or compile with
1669 `-D_GNU_SOURCE'.
1671 * The library has changed from using GNU ld symbol aliases to using weak
1672 symbols where available. The ELF object file format supports weak
1673 symbols; GNU ld also supports weak symbols in the a.out format. (There
1674 is also now support for other GNU ld extensions in ELF. Use the
1675 `--with-elf' option to configure to indicate you have ELF, and
1676 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1677 of many files which contained only symbol aliases, reducing the size of
1678 the source and the compiled library; many other files were renamed to
1679 less cryptic names previously occupied by the symbol alias files.
1680 There is a new header file <elf.h> for programs which operate on
1681 files in the ELF format.
1683 * Converted to Autoconf version 2, so `configure' has more options.
1684 Run `configure --help' to see the details.
1686 * The library can now be configured to build profiling, highly-optimized
1687 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1688 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1689 `configure' enable building these extra libraries. The shared library is
1690 built by default when using both ELF and GNU ld. When shared libraries
1691 are enabled, the new library `-ldl' is available for arbitrary run-time
1692 loading of shared objects; its interface is defined in <dlfcn.h>. The
1693 new header file <link.h> gives access to the internals of the run-time
1694 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1695 application of same name on other systems and it provides information
1696 about dynamically linked binaries.
1698 * The C library now provides the run-time support code for profiling
1699 executables compiled with `-pg'. Programs can control the profiling code
1700 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1701 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1702 the support for this file format was contributed by David Mosberger-Tang.
1704 * The math code has been replaced with a math library based on fdlibm from
1705 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1706 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1707 functions. The math functions now reside in a separate library, so
1708 programs using them will need to use `-lm' their linking commands.
1710 * John C. Bowman contributed optimized ix87 assembler inline functions.
1712 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1713 mechanism similar to that found in Solaris 2. This is now used for the
1714 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1715 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1716 file controls what services are used for each individual database. This
1717 works by loading shared libraries with names specified in `nsswitch.conf',
1718 so service modules can be changed or added at any time without even
1719 relinking any program. Currently there are the file, db, and NIS based
1720 NSS services available.
1722 * The new functions `strtoq' and `strtouq' parse integer values from
1723 strings, like `strtol' and `strtoul', but they return `long long int' and
1724 `unsigned long long int' values, respectively (64-bit quantities).
1726 * The new functions `strtof' and `strtold' parse floating-point values from
1727 strings, like `strtod', but they return `float' and `long double' values,
1728 respectively (on some machines `double' and `long double' are the same).
1730 * Ulrich Drepper has contributed new implementations of the floating-point
1731 printing and reading code used in the `printf' family of functions and
1732 `strtod', `strtof', and `strtold'. These new functions are perfectly
1733 accurate, and much faster than the old ones.
1735 * The implementation of the POSIX locale model was completely rewritten by
1736 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1737 to compile the POSIX locale definition.
1739 * The former dummy implementations of the strcoll and strxfrm function are
1740 now replaced by fully functional code contributed by Ulrich Drepper. The
1741 collation information comes from the POSIX locale definitions.
1743 * The new header <langinfo.h> defines an interface for accessing
1744 various locale-dependent data (using the locale chosen with `setlocale').
1746 * Ulrich Drepper has contributed a new suite of functions for operation on
1747 wide-character and multibyte-character strings, in <wchar.h>;
1748 and classification and case conversion of wide characters, in <wctype.h>.
1749 These new functions are conforming to the ISO C, Amendement 1 specification.
1751 * There is now a second implementation of the standard I/O library available.
1752 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1753 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1755 * You can now use positional parameter specifications in format strings
1756 for the `printf' and `scanf' families of functions. For example,
1757 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1758 ``Number 6, Mr Jones''. This is mainly useful when providing different
1759 format strings for different languages, whose grammars may dictate
1760 different orderings of the values being printed. To support this
1761 feature, the interface for `register_printf_handler' has changed; see
1762 the header file <printf.h> for details.
1764 * The `printf' and `scanf' families of functions now understand a new
1765 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1766 to group numbers as indicated by the locale; for `scanf' and friends, this
1767 says to accept as valid only a number with all the proper grouping
1768 separators in the right places. In the default "C" locale, numbers are
1769 not grouped; but locales for specific countries will define the usual
1770 conventions (i.e. separate thousands with `,' in the US locale).
1772 * The pgrp functions have been regularized, slightly incompatibly but much
1773 less confusingly. The core functions are now `getpgid' and `setpgid',
1774 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1775 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1776 provided for compatibility. There is no longer an incompatible `getpgrp'
1777 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1779 * The new header file <fts.h> and suite of functions simplify programs that
1780 operate on directory trees. This code comes from 4.4 BSD.
1782 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1783 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1784 NSS scheme used in glibc.
1786 * There is a new malloc debugging hook `__memalign_hook'.
1788 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1789 `unsigned int' in <sys/types.h>. These are for compatibility only and
1790 their use is discouraged.
1792 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1793 done differently, so that it works even without GNU ld.
1795 * New function `euidaccess' checks allowed access to a file like `access',
1796 but using the effective IDs instead of the real IDs.
1798 * The time zone data files have been updated for the latest and greatest
1799 local time conventions of the countries of the world.
1801 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1802 see <dirent.h>.
1804 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1805 for formatting floating-point numbers. They are provided only for
1806 compatibility; new programs should use `sprintf' instead. There are
1807 also equivalent function for the `long double' floating-point type and
1808 all functions also exist in a reentrant form.
1810 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1811 functions for maintaining the login-record files (primarily of use to
1812 system programs such as `login'), and convenient functions for
1813 allocating and initializing a pseudo-terminal (pty) device.
1815 * Ulrich Drepper has contributed new support for System V style
1816 shared memory and IPC on systems that support it.
1818 * Ulrich Drepper has contributed several miscellaneous new functions found
1819 in System V: The `hsearch' family of functions provide an effective
1820 implementation of hash tables; `a64l' and `l64a' provide a very simple
1821 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1822 number generator.
1824 * Ulrich Drepper has contributed new reentrant counterparts for the
1825 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1827 * Ulrich Drepper has contributed new, highly-optimized versions of several
1828 string functions for the i486/Pentium family of processors.
1830 * Ulrich Drepper has updated the Linux-specific code, based largely
1831 on work done in Hongjiu Lu's version of GNU libc for Linux.
1832 The GNU library now supports Linux versions 2.0.10 and later,
1833 using the ELF object file format (i[3456]86-*-linux).
1835 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1837 * David Mosberger-Tang and Richard Henderson have ported the C library
1838 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1839 dynamic linking support for ELF/Alpha.
1841 * Richard Henderson contributed several Alpha optimized assembler function
1842 for arithmetic and string handling.
1844 * Ulrich Drepper has contributed a new set of message catalog functions to
1845 support multiple languages using the <libintl.h> interface, for use with
1846 his new package GNU gettext. Translation volunteers have contributed
1847 catalogs of the library's messages in Spanish, German, and Korean.
1849 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1850 program and the `catgets' function for reading the catalog files it
1851 creates. (The <libintl.h> interface is preferred; we include the
1852 <nl_types.h> interface using `catgets' only for source compatibility with
1853 programs already written to use it.)
1855 * New header file <values.h> gives SVID-compatible names for <limits.h>
1856 constants.
1858 * Various new macros, declarations, and small header files for compatibility
1859 with 4.4 BSD.
1861 * New function `group_member' is a convenient way to check if a process has
1862 a given effective group ID.
1864 * When using GCC 2.7 and later, the socket functions are now declared in a
1865 special way so that passing an argument of type `struct sockaddr_in *',
1866 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1867 `struct sockaddr *' type, does not generate a type-clash warning.
1869 * New function `error' declared in header file <error.h> is a convenient
1870 function for printing error messages and optionally exiting; this is the
1871 canonical function used in GNU programs. The new functions `err', `warn',
1872 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1873 doing the same thing.
1875 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1876 POSIX.2 `glob' function to do ~ and {...} expansion.
1878 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1879 `clearenv' which is used in POSIX.9 is also available.
1881 * New function `getsid' returns session ID number on systems that support it.
1883 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1884 files <db.h> and <mpool.h> provide a rich set of functions for several
1885 types of simple databases stored in memory and in files, and <ndbm.h> is
1886 an old `ndbm'-compatible interface using the `db' functions. Link with
1887 `-ldb' to get these functions.
1889 * New macro `strdupa' copies a string like `strdup', but uses local stack
1890 space from `alloca' instead of dynamic heap space from `malloc'.
1892 * New function `strnlen' is like `strlen' but searches only a given maximum
1893 number of characters for the null terminator. `stpncpy', `strndup' and
1894 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1895 function.
1897 * New function `statfs' in header <sys/statfs.h>.
1899 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1900 provide convenient functions for operating on blocks of null-terminated
1901 strings.
1903 * A new suite of functions in <utmp.h> handle all the details of reading
1904 and writing the utmp file.
1906 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1907 Thorsten Kukuk.
1909 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1910 completely POSIX compliant and also implemented the extended functionality
1911 to handle alternate digit representation and alternate era date formats.
1913 * Ulrich Drepper provided an implementation of the `strptime' function
1914 defined in XPG4.2 which transforms a string into a `struct tm' value.
1916 * Paul Eggert provided the tzselect shell script as part of the timezone
1917 code. The shell script makes it easy to select the correct timezone
1918 specification.
1920 * The implementation of the malloc family of functions is completely replaced
1921 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1922 The implementation uses the mmap function (if available) and it is
1923 optimized for the use in multi threaded programs.
1925 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1926 functions. This new functionality is usable by specifying a special
1927 salt string and it is compatible with implementation on *BSD systems.
1929 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1930 `getsubopt' to handle second level command line options, `bsd_signal'
1931 to access BSD style `signal' functionality, the obsolete `regexp' style
1932 expression matcher.
1934 * the `lchown' function is available on system which support this
1935 functionality.
1937 * The implementation of the shadow password handling function was contributed
1938 by Ulrich Drepper.
1940 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1942 * POSIX.1g support was added. The <sys/select.h> header is available,
1943 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1944 implementation of `getaddrinfo'.
1945 \f
1946 Version 1.09
1948 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1950 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1951 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1953 * The new function `daemon' from 4.4 BSD is useful for server programs that
1954 want to put themselves in the background.
1956 * Joel Sherrill has contributed support for several standalone boards that
1957 run without an operating system.
1959 * `printf', `scanf' and friends now accept a `q' type modifier for long
1960 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1962 * All of the code taken from BSD (notably most of the math and networking
1963 routines) has been updated from the BSD 4.4-Lite release.
1965 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1967 * The new functions `getdomainname' and `setdomainname' fetch or change the
1968 YP/NIS domain name. These are system calls which exist on systems which
1969 have YP (aka NIS).
1971 * The time zone data files have been updated for the latest international
1972 conventions.
1974 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1975 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1976 \f
1977 Version 1.08
1979 * The C library now includes support for Sun RPC, from Sun's free
1980 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1981 are included. (There is still no support for YP.)
1983 * Tom Quinn has contributed a port of the C library to SGI machines running
1984 Irix 4 (mips-sgi-irix4).
1986 * The new `lockf' function is a simplified interface to the locking
1987 facilities of `fcntl', included for compatibility.
1989 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1991 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1993 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1994 compatibility.
1996 * The error message printed by `assert' for a failed assertion now includes
1997 the name of the program (if using GNU ld) and the name of the calling
1998 function (with versions of GCC that support this).
2000 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2002 * The library now includes the <sys/mman.h> header file and memory
2003 management functions `mmap', `munmap', `mprotect', `msync', and
2004 `madvise', on systems that support those facilities.
2006 * The interface for `mcheck' has changed slightly: the function called to
2007 abort the program when an allocation inconsistency is detected now takes
2008 an argument that indicates the type of failure. The new function
2009 `mprobe' lets you request a consistency check for a particular block at
2010 any time (checks are normally done only when you call `free' or `realloc'
2011 on a block).
2013 * It is now possible to easily cross-compile the C library, building on one
2014 system a library to run on another machine and/or operating system. All
2015 you need to do is set the variable `HOST_CC' in `configparms' to the
2016 native compiler for programs to run on the machine you are building on (a
2017 few generator programs are used on Unix systems); set `CC' to the
2018 cross-compiler.
2020 * The new function `fexecve' (only implemented on the GNU system) executes
2021 a program file given a file descriptor already open on the file.
2022 \f
2023 Version 1.07
2025 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2026 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2028 * You can set the variable `libprefix' in `configparms' to specify a prefix
2029 to be prepended to installed library files; this makes it easy to install
2030 the GNU C library to be linked as `-lgnuc' or whatever.
2032 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2033 copies a limited number of characters from a string, and returns the
2034 address of the last character written.
2036 * You no longer need to check for whether the installed `stddef.h' is
2037 compatible with the GNU C library. configure now checks for you.
2039 * You can now define a per-stream `fileno' function to convert the
2040 stream's cookie into an integral file descriptor.
2042 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2043 allocates zero bytes of storage, and returns a unique pointer which
2044 you can pass to `realloc' or `free'. The behavior is undefined if
2045 you dereference this pointer.
2047 * The C library now runs on Sony NEWS m68k machines running either
2048 NewsOS 3 or NewsOS 4.
2050 * The new `syscall' function is a system-dependent primitive function
2051 for invoking system calls. It has the canonical behavior on Unix
2052 systems, including unreliable return values for some calls (such as
2053 `pipe', `fork' and `getppid').
2055 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2056 to `EAGAIN', which is the preferred name. On systems whose kernels
2057 use two distinct codes, the C library now translates EWOULDBLOCK to
2058 EAGAIN in every system call function.
2059 \f
2060 Version 1.06
2062 * The GNU C Library Reference Manual is now distributed with the library.
2063 `make dvi' will produce a DVI file of the printed manual.
2064 `make info' will produce Info files that you can read on line using C-h i
2065 in Emacs or the `info' program.
2066 Please send comments on the manual to bug-glibc-manual@gnu.org.
2068 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2070 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2072 * Jason Merrill has contributed a port to the Sequent Symmetry running
2073 Dynix version 3 (i386-sequent-dynix).
2075 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2076 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2078 * New function `memory_warnings' lets you arrange to get warnings when
2079 malloc is running out of memory to allocate, like Emacs gives you.
2081 * The C library now contains the relocating allocator used in Emacs 19 for
2082 its editing buffers. This allocator (ralloc) minimizes allocation
2083 overhead and fragmentation by moving allocated regions around whenever it
2084 needs to. You always refer to a ralloc'd region with a "handle" (a
2085 pointer to a pointer--an object of type `void **').
2087 * There is a new `printf' format: `%m' gives you the string corresponding
2088 to the error code in `errno'.
2090 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2091 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2092 pass, the `a' modifier says to fill in a `char **' you pass with a
2093 malloc'd string.
2095 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2096 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2097 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2099 * `mkstemp' is a traditional Unix function to atomically create and open a
2100 uniquely-named temporary file.
2101 \f
2102 Version 1.05
2104 * The standard location for the file that says what the local timezone is
2105 has changed again. It is now `/usr/local/etc/localtime' (or more
2106 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2108 * The distribution no longer contains any files with names longer than 14
2109 characters.
2111 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2112 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2114 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2115 \f
2116 Version 1.04
2118 * The configuration process has changed quite a bit. The `configure'
2119 script is now used just like the configuration scripts for other GNU
2120 packages. The `sysdeps' directory hierarchy is much rearranged.
2121 The file `INSTALL' explains the new scheme in detail.
2123 * The header files no longer need to be processed into ANSI C and
2124 traditional C versions. There is just one set of files to install, and
2125 it will work with ANSI or old C compilers (including `gcc -traditional').
2127 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2128 MIPS DECStation running Ultrix 4.
2130 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2131 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2132 made itself into a shared library.
2134 * Yet further improved support for the i386, running 4.3 BSD-like systems
2135 (such as Mach 3 with the Unix single-server), or System V.
2137 * New function `strncasecmp' to do case-insensitive string comparison
2138 with limited length.
2140 * New function `strsep' is a reentrant alternative to `strtok'.
2142 * New functions `scandir' and `alphasort' for searching directories.
2144 * New function `setenv' is a better interface to `putenv'.
2146 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2147 function for traversing a directory tree.
2149 * The GNU obstack package is now also part of the C library.
2150 The new function `open_obstack_stream' creates a stdio stream that
2151 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2152 formatted output directly to an obstack.
2154 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2155 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2157 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2159 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2160 things to your strings.
2162 * There are some new test programs: test-fseek, testmb, and testrand.
2164 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2165 These ports are not finished, but are a good starting place for really
2166 supporting those systems.
2168 * `/etc/localtime' is now the standard location for the file that says what
2169 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2170 This follows the general principle that `/etc' is the place for all local
2171 configuration files.
2173 * The C library header files now use `extern "C"' when used by the C++
2174 compiler, so the C library should now work with C++ code.
2176 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2177 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2178 in <strings.h>.)
2180 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2181 function which uses the `merge sort' algorithm, and is said to be
2182 significantly faster than the old GNU `qsort' function. Merge sort is
2183 now the standard `qsort' function. The new algorithm can require a lot
2184 of temporary storage; so, the old sorting function is called when the
2185 required storage is not available.
2187 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2188 provides the Unix `crypt' function, plus some other entry points.
2190 * The code and header files taken from 4.4 BSD have been updated with the
2191 latest files released from Berkeley.
2192 \f
2193 ----------------------------------------------------------------------
2194 Copyright information:
2196 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2198 Permission is granted to anyone to make or distribute verbatim copies
2199 of this document as received, in any medium, provided that the
2200 copyright notice and this permission notice are preserved,
2201 thus giving the recipient permission to redistribute in turn.
2203 Permission is granted to distribute modified versions
2204 of this document, or of portions of it,
2205 under the above conditions, provided also that they
2206 carry prominent notices stating who last changed them.
2207 \f
2208 Local variables:
2209 version-control: never
2210 fill-column: 76
2211 End: