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1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2013 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
7 \f
8 Version 2.18
10 * The following bugs are resolved with this release:
12 11561, 13951, 14142, 14200, 14317, 14327, 14496, 14920, 14964, 14981,
13 14982, 14985, 14994, 14996, 15003, 15006, 15020, 15023, 15036, 15054,
14 15062, 15078.
16 \f
17 Version 2.17
19 * The following bugs are resolved with this release:
21 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
22 9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
23 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
24 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
25 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
26 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298, 14303,
27 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417,
28 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519,
29 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576,
30 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648,
31 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743,
32 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805,
33 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835,
34 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872, 14879,
35 14889, 14893, 14898, 14914.
37 * Optimization of memcpy for MIPS.
39 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
40 EMFILE has been fixed (Bugzilla #14889).
42 * The add-on ports collection is now distributed in the "ports" subdirectory
43 of the main GNU C Library distribution, rather than separately.
45 * Port to ARM AArch64 contributed by Linaro.
47 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
48 Optimized versions of memcpy, memset, and memcmp added for System z10 and
49 zEnterprise z196.
50 Implemented by Andreas Krebbel.
52 * The new function secure_getenv allows secure access to the environment,
53 returning NULL if running in a SUID/SGID process. This function replaces
54 the internal function __secure_getenv.
56 * SystemTap static probes have been added into the dynamic linker.
57 Implemented by Gary Benson.
59 * Optimizations of string functions strstr, strcasestr and memmem.
60 Implemented by Maxim Kuvyrkov.
62 * The minimum Linux kernel version that this version of the GNU C Library
63 can be used with is 2.6.16.
65 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
66 powerpc POWER7. Implemented by Will Schmidt.
68 * New configure option --disable-nscd builds the C library such that it
69 never attempts to contact the Name Service Caching Daemon (nscd).
70 New configure option --disable-build-nscd avoids building nscd itself;
71 this is the default if --disable-nscd is used.
73 * Improved support for cross-compilation, including cross-testing and
74 bootstrap builds without a previously built glibc.
76 * Several testsuite tests are now able to test multiple IFUNC variants of an
77 interface, rather than just testing the one that would be chooen by
78 default.
80 * New configure options --with-bugurl and --with-pkgversion, for
81 distributors to use to embed their bug-reporting and package version
82 information in --help and --version output.
84 * The ttyname and ttyname_r functions on Linux now fall back to searching for
85 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
86 allows creation of chroots without the procfs mounted on /proc.
88 * The `crypt' function now fails if passed salt bytes that violate the
89 specification for those values. On Linux, the `crypt' function will
90 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
91 enabled, and fail on encrypted strings using the MD5 or DES algorithm
92 when the mode is enabled.
94 * The `clock_*' suite of functions (declared in <time.h>) is now available
95 directly in the main C library. Previously it was necessary to link with
96 -lrt to use these functions. This change has the effect that a
97 single-threaded program that uses a function such as `clock_gettime' (and
98 is not linked with -lrt) will no longer implicitly load the pthreads
99 library at runtime and so will not suffer the overheads associated with
100 multi-thread support in other code such as the C++ runtime library.
102 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
103 sat_IN, and szl_PL.
104 \f
105 Version 2.16
107 * The following bugs are resolved with this release:
109 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
110 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
111 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
112 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
113 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
114 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
115 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
116 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
117 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
118 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
119 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
120 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
121 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
122 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
123 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
124 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
125 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
126 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
127 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
128 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
129 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
130 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
131 14278.
133 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
134 configuring glibc with:
135 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
136 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
137 Implemented by H.J. Lu.
139 * ISO C11 support:
141 + define static_assert
143 + do not declare gets
145 + declare at_quick_exit and quick_exit also for ISO C11
147 + aligned_alloc. NB: The code is deliberately allows the size parameter
148 to not be a multiple of the alignment. This is a moronic requirement
149 in the standard but it is only a requirement on the caller, not the
150 implementation.
152 + timespec_get added
154 + uchar.h support added
156 + CMPLX, CMPLXF, CMPLXL added
158 Implemented by Ulrich Drepper.
160 * Support for the IA-64 has been moved to ports.
162 * Remove support for anything but ELF binary format
164 * Checking versions of poll, ppoll added.
165 Implemented by Ulrich Drepper.
167 * More generic and 64-bit performance optimizations to math functions.
168 Implemented by Ulrich Drepper.
170 * New configure option --enable-obsolete-rpc makes the deprecated RPC
171 headers and functions available at compile time as they were before
172 version 2.14. This option will be removed at some time in the future
173 after the TI-RPC library becomes fully sufficient for the needs of
174 existing applications.
176 * Compatibility code for Linux kernel versions before 2.4 has been removed.
177 Note that glibc is not expected to work with any Linux kernel version
178 before 2.6.
180 * New header <sys/auxv.h> and function getauxval allowing easy access to
181 the AT_* key-value pairs passed from the Linux kernel. The header also
182 defines the HWCAP_* bits associated with the AT_HWCAP key.
184 * New locales: mag_IN
186 * New configure option --enable-systemtap builds SystemTap static probes
187 into libc for setjmp and longjmp and into libpthread for various operations.
188 So far the setjmp/longjmp probes and some of the libpthread probes are
189 provided only for i*86 and x86_64.
190 Implemented by Roland McGrath and Rayson Ho.
192 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
194 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
195 and Will Schmidt.
197 * More optimized functions for SPARC. Implemented by David S. Miller.
199 * Improved support for cross-compilation, especially bootstrap builds
200 without a previously built glibc.
202 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
203 Chris Metcalf from Tilera.
205 * Support for the old ARM ABI has been removed from ports. Only the EABI is
206 now supported for ARM processors.
208 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
209 as the name of the dynamic linker, to distinguish it from the
210 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
212 * Support for CRIS has been removed from ports.
214 * A new class of installed header has been documented for low-level
215 platform-specific functionality. PowerPC added the first instance with a
216 function to provide time base register access. Contributed by Tulio
217 Magno Quites Machado Filho.
219 * ix86 configurations now install header files that are consistent with
220 what x86-64 configurations install. These same header files can be used
221 for -m32, -m64, or -mx32 builds.
222 Contributed by H.J. Lu.
224 * Math library bug fixes. A thorough audit of all open math library bugs was
225 conducted by Joseph Myers. Significant progress was made on many math
226 library bugs resulting in more accurate exceptions and function results.
227 Many thanks to all those that contributed including Andreas Jaeger for his
228 patch review and work on the x87 trigonometric instruction issues.
230 * Timezone data is no longer installed. Timezone-related binaries and scripts
231 will continue to be installed. Users should obtain their timezone data from
232 their distribution provider or from the tzdata package at
233 <ftp://munnari.oz.au/pub/>.
234 \f
235 Version 2.15
237 * The following bugs are resolved with this release:
239 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
240 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
241 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
242 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
243 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
244 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
245 13484, 13506, 13515, 13523, 13524, 13538, 13540
247 * New program pldd to list loaded object of a process
248 Implemented by Ulrich Drepper.
250 * Add nss_db support back to glibc. No more dependency on Berkeley db
251 and support for initgroups lookups.
252 Implemented by Ulrich Drepper.
254 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
255 Contributed by HJ Lu.
257 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
258 Contributed by HJ Lu.
260 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
261 on x86-32 and x86-64.
262 Contributed by Liubov Dmitrieva.
264 * Optimized strchr and strrchr for SSE on x86-32.
265 Contributed by Liubov Dmitrieva.
267 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
268 for x86-64 and x86-32.
269 Contributed by Liubov Dmitrieva.
271 * New interfaces: scandirat, scandirat64
272 Implemented by Ulrich Drepper.
274 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
275 Implemented by Ulrich Drepper.
277 * nscd now also caches the netgroup database.
278 Implemented by Ulrich Drepper.
280 * Integrate libm with gcc's -ffinite-math-only option.
281 Implemented by Ulrich Drepper.
283 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
284 to math functions. Implemented by Ulrich Drepper.
286 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
287 Implemented by Ulrich Drepper.
289 * New Linux interfaces: process_vm_readv, process_vm_writev
291 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
292 Implemented by Ulrich Drepper.
294 * Optimized nearbyint and strcasecmp for PPC.
295 Implemented by Adhemerval Zanella.
297 * New locales: bho_IN, unm_US, es_CU, ta_LK
298 \f
299 Version 2.14
301 * The following bugs are resolved with this release:
303 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
304 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
305 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
306 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
307 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
308 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
309 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
310 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
311 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
312 12795, 12811, 12813, 12814, 12841
314 * The RPC implementation in libc is obsoleted. Old programs keep working
315 but new programs cannot be linked with the routines in libc anymore.
316 Programs in need of RPC functionality must be linked against TI-RPC.
317 The TI-RPC implementation is IPv6 enabled and there are other benefits.
319 Visible changes of this change include (obviously) the inability to link
320 programs using RPC functions without referencing the TI-RPC library and the
321 removal of the RPC headers from the glibc headers.
322 Implemented by Ulrich Drepper.
324 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
325 syncfs, setns, sendmmsg
327 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
328 yue_HK, lij_IT, mhr_RU
330 * New encodings: CP770, CP771, CP772, CP773, CP774
332 * New program sotruss to trace calls through PLTs
333 Implemented by Ulrich Drepper.
335 * The malloc hook implementation is marked deprecated and will be removed
336 from the default implementation in the next version. The design never
337 worked ever since the introduction of threads. Even programs which do
338 not create threads themselves can use multiple threads created internally.
339 \f
340 Version 2.13
342 * The following bugs are resolved with this release:
344 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
345 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
346 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
347 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
348 12378, 12394, 12397
350 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
352 * POWER7 optimizations: memset, memcmp, strncmp
354 * New optimized string functions for x86-64: strnlen (SSE2),
355 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
356 Implemented by Ulrich Drepper.
357 \f
358 Version 2.12
360 * The following bugs are resolved with this release:
362 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
363 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
364 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
365 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
366 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
367 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
368 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
369 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
371 * New interfaces: pthread_getname_np, pthread_setname_np
373 * New Linux interface: recvmmsg
375 * STT_GNU_IFUNC implemented for Sparc by David Miller.
377 * The dynamic linker now recognizes supported ABI versions from the
378 EI_ABIVERSION field in the ELF header.
379 Implemented by Ulrich Drepper.
381 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
382 will not be used to fill in password fields in the passwd.byname replies.
383 Instead it is used to synthesize the shadow.byname table, should it be
384 missing. This is a useful mode in some installations involving Solaris.
385 Implemented by Ulrich Drepper.
387 * New locales: kok_IN, sq_MK, cv_RU
388 \f
389 Version 2.11
391 * The following bugs are resolved with this release:
393 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
394 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
395 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
396 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
397 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
398 10789, 10817, 10823, 10840, 10847
400 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
401 mkostemps64
402 Implemented by Ulrich Drepper.
404 * Checking version of longjmp added that fails if an uninitialized stack
405 frame would be created. Implemented by Ulrich Drepper.
407 * STT_GNU_IFUNC is now supported in static executables.
408 Implemented by H.J. Lu.
410 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
412 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
413 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
414 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
415 Contributed by H.J. Lu.
417 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
418 Implemented by Ulrich Drepper.
420 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
421 strstr, strcasestr.
422 Contributed by H.J. Lu.
424 * Support for fma instruction in AVX on x86-64.
425 Implemented by H.J. Lu and Ulrich Drepper.
427 * AVX support in x86-64 auditing support in ld.so.
428 Implemented by H.J. Lu.
430 * STB_GNU_UNIQUE support added.
431 Implemented by Ulrich Drepper.
433 * Implement second fallback mode for optimized DNS lookup for even more
434 broken environments. If two requests from the same port are not
435 handled correctly close the socket and open a new one before sending
436 the second request. The 'single-request-reopen' option in /etc/resolv.conf
437 can be used to select this mode right away, instead of rediscovering the
438 necessity is every process again.
439 Implemented by Ulrich Drepper.
441 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
442 Implemented by Adam Tkac.
444 * Optimized iconv conversions for S390x.
445 Implemented by Andreas Krebbel.
447 * Using condvars with PI mutexes is now more efficient due to kernel
448 support for requeueing to PI futexes. NPTL support added for x86-64.
449 Implemented by Ulrich Drepper.
451 * New locales: ps_AF, my_MM
452 \f
453 Version 2.10
455 * The following bugs are resolved with this release:
457 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
458 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
459 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
460 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
461 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
463 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
464 Implemented by Ulrich Drepper.
466 * New Linux interfaces: accept4, fallocate, fallocate64.
467 Implemented by Ulrich Drepper.
469 * Correct declarations of string function when used in C++ code. This
470 could lead to compile errors for invalid C++ code.
472 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
473 now in POSIX.
475 * New POSIX 2008 interface: psiginfo
476 Implemented by Ulrich Drepper.
478 * New ISO C++1x interfaces: quick_exit, at_quick_exit
479 Implemented by Ulrich Drepper.
481 * Support for selecting between multiple function definitions at runtime
482 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
484 * The libcrypt library can now use the hash function implementations in
485 NSS. Implemented by Ulrich Drepper.
487 * The malloc implementation can be compiled to be less memory efficient
488 but higher performing in multi-threaded programs.
489 Implemented by Ulrich Drepper.
491 * New locales: nan_TW@latin, ks_IN
493 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
494 Implemented by Ulrich Drepper.
496 * Extended printf hook support. It is possible to use user-defined types
497 and extend existing format specifiers.
498 Implemented by Ulrich Drepper.
500 * Handling for group shadow files has been added.
501 Implemented by Ulrich Drepper.
503 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
504 servers (the case, e.g., for some people using the built-in DNS
505 server in ADSL modems/routers). There is a once-per-process timeout
506 in case of a broken server. To avoid it, users can run nscd or put
507 'options single-request' in /etc/resolv.conf.
508 Implemented by Ulrich Drepper.
509 \f
510 Version 2.9
512 * The following bugs are resolved with this release:
514 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
515 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
516 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
517 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
518 6968, 6974, 6980, 6995, 7008, 7009, 7029
520 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
521 up at the same time. Implemented by Ulrich Drepper.
523 * TLS descriptors for LD and GD on x86 and x86-64.
524 Implemented by Alexandre Oliva.
526 * getaddrinfo now handles DCCP and UDPlite.
527 Implemented by Ulrich Drepper.
529 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
530 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
531 Implemented by Ulrich Drepper.
533 * New implementation of memmem, strstr, and strcasestr which is O(n).
534 Implemented by Eric Blake.
536 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
538 * Implement "e" option for popen to open file descriptor with the
539 close-on-exec flag set. Implemented by Ulrich Drepper.
541 * Implement "b" mode for fmemopen. In this mode writes writes don't
542 implicitly add a NUL byte and seeks from the end of the buffer really
543 use the buffer end, not the string length as the basis.
544 Implemented by Ulrich Drepper.
546 * Many functions, exported and internal, now atomically set the close-on-exec
547 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
549 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
550 Sinhala)
551 Implemented by Pravin Satpute.
553 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
554 \f
555 Version 2.8
557 * The following bugs are resolved with this release:
559 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
560 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
561 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
562 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
563 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
564 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
565 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
567 * New locales: bo_CN, bo_IN, shs_CA.
569 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
571 * Sorting rules for some Indian languages (Devanagari and Gujarati).
572 Implemented by Pravin Satpute.
574 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
576 * nscd caches now all timeouts for DNS entries
577 Implemented by Ulrich Drepper.
579 * nscd is more efficient and wakes up less often.
580 Implemented by Ulrich Drepper.
582 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
583 vdprintf, and obstack_vprintf.
584 Implemented by Jakub Jelinek.
586 * Faster memset for x86-64.
587 Implemented by Harsha Jagasia and H.J. Lu.
589 * Faster memcpy on x86.
590 Implemented by Ulrich Drepper.
592 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
593 Implemented by Ulrich Drepper.
595 * Faster sqrt and sqrtf implemention for some PPC variants.
596 Implemented by Steven Munroe.
597 \f
598 Version 2.7
600 * The following bugs are resolved with this release:
602 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
603 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
604 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
605 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
606 5071, 5103, 5104, 5112, 5113, 5184, 5186
608 * More checking functions: fread, fread_unlocked, open*, mq_open.
609 Implemented by Jakub Jelinek and Ulrich Drepper.
611 * Extend fortification to C++. Implemented by Jakub Jelinek.
613 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
614 by not recognizing 'a' as a modifier when those specs are requested.
615 Implemented by Jakub Jelinek.
617 * PPC optimizations to math and string functions.
618 Implemented by Steven Munroe.
620 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
621 options to be passed. Implemented by Ulrich Drepper.
623 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
625 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
626 Implemented by Ulrich Drepper.
628 * Handle private futexes in the NPTL implementation.
629 Implemented by Jakub Jelinek and Ulrich Drepper.
631 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
632 Implemented by Roland McGrath and Ulrich Drepper.
634 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
636 * SHA-256 and SHA-512 based password encryption.
637 Implemented by Ulrich Drepper.
639 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
640 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
641 yo_NG.
643 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
644 Implemented by Ulrich Drepper.
645 \f
646 Version 2.6
648 * The following bugs are resolved with this release:
650 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
651 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
652 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
653 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
654 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
655 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
656 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
657 4702, 4858
659 * New Linux interfaces: epoll_pwait, sched_getcpu.
661 * New generic interfaces: strerror_l.
663 * nscd can now cache the services database. Implemented by Ulrich Drepper.
664 \f
665 Version 2.5
667 * The following bugs are resolved with this release:
669 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
670 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
671 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
672 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
673 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
674 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
675 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
676 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
677 3225, 3251, 3252, 3253, 3273
679 * For Linux, the sorting of addresses returned by getaddrinfo now also
680 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
681 Implemented by Ulrich Drepper.
683 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
684 Implemented by Ulrich Drepper.
686 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
688 * New iconv module for MIK. Contributed by Alexander Shopov.
690 * For sites with broken group and/or passwd database, the auto-propagate
691 option of nscd can prevent creating ID lookup entries from the results
692 of a name lookup and vice versa. This usually is no problem but some
693 site might have problems with the default behavior.
694 Implemented by Ulrich Drepper.
696 * Iterating over entire database in NIS can be slow. With the
697 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
698 to trade time for memory. The entire database will be read at once.
699 Implemented by Ulrich Drepper.
701 * The interfaces introduced in RFC 3542 have been implemented by
702 Ulrich Drepper.
704 * Support for the new ELF hash table format was added by Ulrich Drepper.
706 * Support for priority inheritance mutexes added by Jakub Jelinek and
707 Ulrich Drepper.
709 * Support for priority protected mutexes added by Jakub Jelinek.
711 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
712 or_IN, csb_PL, fy_NL, sr_ME.
713 \f
714 Version 2.4
716 * More overflow detection functions.
718 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
719 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
721 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
722 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
723 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
724 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
725 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
726 by Masahide Washizawa.
728 * It is now possible to install audit libraries for the dynamic linker using
729 LD_AUDIT. Implemented by Ulrich Drepper.
731 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
732 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
733 For a libc and libpthread that works well on Linux 2.4 kernels, we
734 recommend using the stable 2.3 branch.
736 * The new function open_wmemstream acts like open_memstream,
737 but uses a wchar_t wide character buffer.
739 * The new function ppoll is an improved version of poll, similar to pselect.
741 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
742 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
743 renameat, unlinkat, linkat, symlinkat, readlinkat.
745 * New Linux kernel system calls: unshare,
746 inotify_init, inotify_add_watch, inotify_rm_watch.
748 * The euidaccess function is now also known by the alias eaccess,
749 for compatibility with some other systems.
751 * Timezone data updated to 2006b version.
752 \f
753 Version 2.3.6
755 * The following bugs are resolved with this release:
757 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
758 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
759 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
760 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
761 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
762 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
764 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
766 * As of this release, GCC 4 can be used to compile the C Library.
768 * Timezone data updated to 2005m version.
769 \f
770 Version 2.3.5
772 * The following bugs are resolved with this release:
774 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
775 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
776 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
777 777, 787, 821, 822, 823, 825
779 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
780 \f
781 Version 2.3.4
783 * Support for RFC 3678. Real implementations exist only for Linux so far.
784 Implemented by Ulrich Drepper.
786 * nscd can now cache entries persistently. Expiring entries are reloaded.
787 For speedups the cache can be shared in memory with client processes.
788 Implemented by Ulrich Drepper.
790 * nscd can now perform SELinux checks.
791 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
793 * getaddrinfo queries are now cached. Canonical name lookup is performed
794 efficiently.
795 Implemented by Ulrich Drepper.
797 * The nothrow function attribute is used when headers are used by gcc when
798 compiling C code. This can avoid significant amounts of exception
799 handling data.
801 * The malloc functions perform more error checking and are stricter when
802 it comes to reacting on errors. The default action is to terminate
803 the process after showing an error message. Implemented by Ulrich Drepper.
805 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
806 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
808 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
809 namespaces using the new function dlmopen(). This feature is of course,
810 like most other dynamic loading functionality, not available in statically
811 linked applications. Implemented by Ulrich Drepper.
813 * Low-overhead boundary checking variants of string and some stdio functions
814 were added. These are to be used in conjunction with a gcc patch by
815 Jakub Jelinek which adds calls to these functions if possible.
816 Implemented by Jakub Jelinek and Ulrich Drepper.
818 * Old code for several operating systems and machine architectures that
819 have not been in working condition in a long time have been removed from
820 the main source tree maintained by the GNU C Library's maintainers.
821 These files are now reside in the separate `ports' source module
822 that is usable as an add-on when building the library.
823 \f
824 Version 2.3.3
826 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
827 interrogate the dynamic linker, compatible with the Solaris interface.
829 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
830 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
832 * getifaddrs now uses the netlink interface on Linux to get its information.
833 Implemented by Thorsten Kukuk.
835 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
836 Implemented by Ulrich Drepper.
838 * support for non-executable stacks on x86 has been added. Changes mostly
839 by Roland McGrath.
841 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
842 and Ulrich Drepper.
844 * getaddrinfo now performs destination address selection according to
845 RFC 3484.
846 \f
847 Version 2.3.2
849 * Thread-safe interfaces for many functions that access locale data
850 were added in version 2.3, but these features were omitted from NEWS.
851 Many functions have variants with an `_l' suffix that take a `locale_t'
852 object as a parameter rather than consulting the current locale.
853 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
854 create and maintain `locale_t' objects. Additionally, the new function
855 `uselocale' sets "the current locale" (as used by functions not so
856 parameterized) set for an individual thread. These features were added
857 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
859 * The functions getresuid, getresgid, setresuid, and setresgid, which
860 have long been available on Linux, are now declared in <unistd.h>
861 and are now also available on the Hurd.
863 * ELF thread-local storage support (TLS) now works on x86-64.
865 * The new dynamic string token $LIB is expanded in shared library names.
866 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
868 * Aldy Hernandez contributed complete software floating point support for
869 PowerPC machines with no FPU.
871 * fexecve is implemented on Linux.
873 * The `btowc' function should work at least twice as fast due to
874 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
876 * With approriate thread add-ons cancelable functions are now implemented
877 in libc.so as well. No need to call the function in libpthread. This
878 change allowed to finally disable the incorrect and expensive handling
879 of weak definition in ld.so.
881 * Yet more PLT entries in libc.so have been removed. We finally arrived
882 at the bare minimum. Startup times improved appropriately.
884 * Support for the new Linux/x86 system call interface was added. The
885 AT_SYSINFO auxiliary vector entry is recognized and handled.
886 \f
887 Version 2.3
889 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
890 charsets.
892 * iconv (the program and the interface) now accepts empty names (excluding
893 options like //TRANSLIT) to mean "use charset of current locale".
895 * localedef can now transliterate characters in strings which are not in
896 the provided charmap. The information from the input locale is used.
898 * Prelinking support was added for ELF targets. This requires additional
899 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
901 * Read-only stdio streams now use mmap to speed up operation by eliminating
902 copying and buffer underflows. To use add 'm' to the mode string of
903 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
905 * The malloc functions were completely rewritten by Wolfram Gloger based
906 on Doug Lea's malloc-2.7.0.c.
908 * Isamu Hasegawa contributed a completely new and POSIX-conformant
909 implementation of regex.
911 * Bruno Haible upgraded the iconv and locale implementation to support
912 Unicode 3.2.
914 * Contents of the LC_* and LANG environment variables in the CEN style are
915 not recognized anymore. It never was used. Change by Ulrich Drepper.
917 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
918 thread-local storage (TLS) ABI on some platforms.
919 Changes by Ulrich Drepper. SH support by Kaz Kojima.
921 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
922 EUC-JISX0213, and TSCII.
924 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
925 BSD-compatible interface for getting all network interface addresses.
926 Implementation for IPv4 by Roland McGrath.
928 * Loading of locale data is faster due to the introduction of a locale
929 archive. Implemented by Roland McGrath and Ulrich Drepper.
931 * Startup times are significantly reduced by not using exported functions
932 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
933 and Ulrich Drepper.
935 * Steven Munroe contributed a port to PowerPC64/Linux.
936 \f
937 Version 2.2.6
939 * The Hurd now uses the GNU libio implementation of stdio rather than the
940 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
942 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
943 with the same behavior as the Linux system call of the same name.
944 \f
945 Version 2.2.5
947 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
948 128-bit long double format.
950 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
951 IBM1161, and IBM1162 charsets.
953 * Andreas Jaeger contributed a port to x86-64/Linux.
955 * Peter Bruin contributed a port to PowerPC/Hurd.
957 * libc functions using I/O streams now can handle wide-oriented streams
958 as well.
960 * optimizations in the dynamic linker. Binaries created by recent binutils
961 versions start up quicker due to reduced time spent on relocations.
963 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
964 \f
965 Version 2.2.4
967 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
968 asinh, atanh, j0 for the 128-bit long double format.
970 * Bruno Haible updated all the code handling Unicode in some form to
971 support Unicode 3.1.
973 * Speed of regex for single-byte locales is back to previous levels.
974 Patch by Isamu Hasegawa.
976 * Alpha, SPARC, and IA-64 now also using floating stacks.
978 * Startup time of internationalized applications greatly improved through
979 iconv cache. Use iconvconfig to generate the cache file.
980 Contributed by Ulrich Drepper.
982 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
983 severe performance problems. Patch by David Mosberger.
985 * The Hurd port got a lot more functionality like AIO, various stdio
986 extensions, etc. Mainly done by Roland McGrath.
988 * mtrace can now lookup symbols in shared libraries.
989 \f
990 Version 2.2.3
992 * Intel's IA-64 math library is largely integrated. It provides fast and
993 accurate implementatations for most basic and standard math functions
994 in float, double, and long double format.
996 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
997 and asin for the 96-bit long double format and asin, log, tan for the
998 128-bit long double format.
1000 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1001 The basic double functions exist today. Contributed by Abraham Ziv
1002 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1003 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1005 * An asynchronous name lookup library was added. The interface is designed
1006 after POSIX AIO. The proposal was circulated beforehand to get comments.
1007 No negative ones came in. Implemented by Ulrich Drepper.
1009 * Port to S390/64bit contributed by Martin Schwidefsky
1010 <schwidefsky@de.ibm.com>.
1012 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1013 of functions for Linux/IA-64.
1015 * The RPC code is now thread safe. Threads can now use the same service
1016 of different services at the same time. Patch by Eric Norum
1017 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1019 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1020 family of functions for Linux/S390.
1022 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1023 of functions for Linux/x86.
1025 * Port to Linux/CRIS contributed by Axis Communications.
1026 \f
1027 Version 2.2.2
1029 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1030 we can now check for namespace violations and missing declarations. The
1031 result is that almost all headers are now Unix-compliant (as defined in
1032 the upcoming XPG6). The negative side is that some programs might need
1033 corrections, too, if they depend on the incorrect form of the headers in
1034 previous versions which defined too many symbols and included too many
1035 other headers.
1037 * regex now handles multibyte character sets correctly.
1038 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1040 * iconv (the program) does now conform to the upcoming XPG6 and handles
1041 charmaps. Instead of the charset names the path of charmaps can be
1042 provided and the conversion happens based on this data.
1043 Contributed by Ulrich Drepper.
1045 * The locale program now provides detailed information about the installed
1046 locales. While
1048 locale -a
1050 only lists the names of the supported locales
1052 locale -a --verbose
1054 provides details such as country, language, and codeset name.
1055 Contributed by Ulrich Drepper.
1056 \f
1057 Version 2.2.1
1059 * The gencat program now parses the input file according to the charset
1060 selected by the LC_CTYPE category. This is important for stateful
1061 character sets. To make generating catalogs easier there is a way
1062 to overwrite the charset selected by the locale: before the first
1063 message or $ quote line the catalog can contain a line like
1065 $ codeset=ISO-8859-2
1067 to select the charset (ISO-8859-2 in this case).
1069 Implemented by Shinya Hanataka and Ulrich Drepper.
1071 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1072 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1073 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1075 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1076 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1078 * The LANGUAGE environment variable is now ignored unless the locale is
1079 changed from the default "C" locale.
1081 * The usual bug fixes.
1082 \f
1083 Version 2.2
1085 * Greg McGary added runtime support for bounds checking using gcc's
1086 new -fbounded-pointers option. ix86 target is complete. PowerPC
1087 is in progress.
1089 * Thorsten Kukuk added secure mode support to nscd.
1091 * The Berkeley db libraries have been removed.
1093 Related, the nss_db module is now in a separate package since it
1094 obviously requires a database library being available.
1096 * Wide character I/O streams implemented by Ulrich Drepper.
1098 * Functions from the extended socket API added by Ulrich Drepper.
1100 * Functions feenableexcept and fedisableexcept to control the
1101 behaviour of individual exceptions have been added by Andreas Jaeger.
1103 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1105 * The resolver code has been updated from bind 8.2.3-T5B which supports
1106 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1107 and Mark Kettenis.
1109 This change could in some situations effect backward compatibility. Since
1110 now `_res' is a thread-local instead of a global variable, modifying it
1111 in one thread does not have any effect in other threads.
1113 The resolver library was also extended to allow IPv6 as the transport
1114 protocol for the requests. This work was done by Stig Venaas.
1116 * Compatibility code for K&R C compilers has been removed from the
1117 header files. A ISO C compiler is needed to use the library
1118 (conforming to either C89 or C99 standard).
1120 * Complete rewrite of the localedef program to support multibyte character
1121 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1122 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1123 Implemented by Ulrich Drepper.
1125 Bruno Haible significantly improved the generation and use of the data
1126 structures for the wide character tables.
1128 * Plural handling in gettext implemented by Ulrich Drepper.
1130 * The utmp daemon has been removed.
1132 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1134 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1135 and Yutaka Niibe.
1137 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1139 * POSIX barriers implemented by Kaz Kylheku.
1141 * POSIX spawn function family implemented by Ulrich Drepper.
1143 * POSIX spinlocks are now available.
1145 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1147 * the configure option --enable-kernel=X.Y.Z allows to strip out
1148 compatibility for kernel versions before X.Y.Z. This is currently only
1149 implemented for Linux.
1151 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1152 field sin6_scope_id. This means that all programs using IPv6 should be
1153 recompiled. Don't expect binary compatibility with previous glibc
1154 versions.
1156 * various conversion modules for IBM character sets contributed by
1157 Masahide Washizawa.
1159 * IA-64 port by Jes Sorensen and HJ Lu.
1160 \f
1161 Version 2.1.3
1163 * bug fixes
1165 \f
1166 Version 2.1.2
1168 * bug fixes
1170 \f
1171 Version 2.1.1
1173 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1175 * New xdr functions are added; some rpc functions are now 64bit clean.
1177 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1179 * Fixed known incompatibilities with glibc 2.0.
1181 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1183 * Optimized a number of functions (especially the ELF dynamic loader).
1185 * Update timezone data files.
1187 * lots of charmaps corrections
1189 * some new locale definitions and charmaps
1191 \f
1192 Version 2.1
1194 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1195 conform to POSIX member type requirements. Symbol versions have been
1196 adjusted as needed within the library, and for direct use by applications,
1197 but there is potential for problems if third-party libraries use
1198 struct timeval as part of their interface. This does not present
1199 a problem for X and other "essential" system libraries.
1201 * An additional locale model to support C++ Standard Library locale
1202 model and probably more was implemented by Ulrich Drepper.
1204 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1205 symbol level.
1207 * Miles Bader provided the `argp' function family to support hierachical
1208 command line argument parsing, layered on top of getopt.
1210 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1212 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1213 numbers.
1215 * scanf recognizes the %a and %A format for scanning floating point numbers.
1217 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1218 information and interfaces for the available integer types.
1220 * about 130 new math functions were added to implement the ISO C9x math
1221 library.
1223 * the new header <complex.h> contains definitions of the complex math
1224 functions from ISO C 9X.
1226 * the new header <tgmath.h> defines generic macros to use complex or
1227 real valued functions.
1229 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1231 * Andreas Jaeger provided a test suite for the math library.
1233 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1235 * Ulrich Drepper added character set conversion functions (iconv).
1237 * Optimized string functions have been added.
1239 * The localedata addon is now part of glibc.
1241 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1243 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1244 daemon for NSS (nscd).
1246 Missing a better place here are some numbers on improvements. Under
1247 Linux 2.1.125 un-tar-ing the kernel sources takes
1249 user system wall
1251 using local files 12.19s 6.88s 22.91s
1253 using NIS 13.92s 8.91s 26.34s
1255 using NIS & nscd 10.37s 7.34s 25.30s
1257 using NIS+ 27.57s 30.37s 640.46s
1259 using NIS+ & nscd 10.25s 7.83s 26.51s
1261 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1263 Keep in mind that non-namelookup related operations dominate above times.
1264 It was just a common complain that using NIS+ unpacking the kernel is
1265 horribly slow.
1267 [1] The old nscd implementation is not available anymore since it was
1268 distributed with glibc up to version 2.0.98 and thus is now replaced.
1270 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1272 * Mark Kettenis provided a Hesiod NSS module.
1274 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1275 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1277 * rcmd can now handle netgroups (Dick Streefland).
1279 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1280 Bambrough.
1282 * Support for the IPv6 protocol has been added to the socket API, as per the
1283 latest draft standards.
1285 * Support for Linux 2.2 has been added.
1287 * Interface changes relative to the latest 2.0.x release:
1288 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1289 addseverity NEW: Unix98
1290 alphasort64 NEW: LFS
1291 argp_err_exit_status NEW: argp, GNU ext
1292 argp_error NEW: argp, GNU ext
1293 argp_failure NEW: argp, GNU ext
1294 argp_help NEW: argp, GNU ext
1295 argp_parse NEW: argp, GNU ext
1296 argp_program_bug_address NEW: argp, GNU ext
1297 argp_program_version NEW: argp, GNU ext
1298 argp_program_version_hook NEW: argp, GNU ext
1299 argp_state_help NEW: argp, GNU ext
1300 argp_usage NEW: argp, GNU ext
1301 authdes_create NEW: Secure RPC
1302 authdes_getucred NEW: Secure RPC
1303 authdes_pk_create NEW: Secure RPC
1304 backtrace NEW: GNU ext.
1305 backtrace_symbols NEW: GNU ext.
1306 backtrace_symbols_fd NEW: GNU ext.
1307 cacos NEW: ISO C 9x
1308 cacosf NEW: ISO C 9x
1309 cacosh NEW: ISO C 9x
1310 cacoshf NEW: ISO C 9x
1311 cacoshl NEW: ISO C 9x
1312 cacosl NEW: ISO C 9x
1313 capget NEW: kernel
1314 capset NEW: kernel
1315 carg NEW: ISO C 9x
1316 cargf NEW: ISO C 9x
1317 cargl NEW: ISO C 9x
1318 casin NEW: ISO C 9x
1319 casinf NEW: ISO C 9x
1320 casinh NEW: ISO C 9x
1321 casinhf NEW: ISO C 9x
1322 casinhl NEW: ISO C 9x
1323 casinl NEW: ISO C 9x
1324 catan NEW: ISO C 9x
1325 catanf NEW: ISO C 9x
1326 catanh NEW: ISO C 9x
1327 catanhf NEW: ISO C 9x
1328 catanhl NEW: ISO C 9x
1329 catanl NEW: ISO C 9x
1330 cbc_crypt NEW: Secure RPC
1331 ccos NEW: ISO C 9x
1332 ccosf NEW: ISO C 9x
1333 ccosh NEW: ISO C 9x
1334 ccoshf NEW: ISO C 9x
1335 ccoshl NEW: ISO C 9x
1336 ccosl NEW: ISO C 9x
1337 cexp NEW: ISO C 9x
1338 cexpf NEW: ISO C 9x
1339 cexpl NEW: ISO C 9x
1340 cimag NEW: ISO C 9x
1341 cimagf NEW: ISO C 9x
1342 cimagl NEW: ISO C 9x
1343 clearerr_locked REMOVED
1344 clntunix_create NEW: sunrpc ext
1345 clog NEW: ISO C 9x
1346 clog10 NEW: ISO C 9x
1347 clog10f NEW: ISO C 9x
1348 clog10l NEW: ISO C 9x
1349 clogf NEW: ISO C 9x
1350 clogl NEW: ISO C 9x
1351 conj NEW: ISO C 9x
1352 conjf NEW: ISO C 9x
1353 conjl NEW: ISO C 9x
1354 cpow NEW: ISO C 9x
1355 cpowf NEW: ISO C 9x
1356 cpowl NEW: ISO C 9x
1357 cproj NEW: ISO C 9x
1358 cprojf NEW: ISO C 9x
1359 cprojl NEW: ISO C 9x
1360 creal NEW: ISO C 9x
1361 crealf NEW: ISO C 9x
1362 creall NEW: ISO C 9x
1363 creat64 NEW: LFS
1364 csin NEW: ISO C 9x
1365 csinf NEW: ISO C 9x
1366 csinh NEW: ISO C 9x
1367 csinhf NEW: ISO C 9x
1368 csinhl NEW: ISO C 9x
1369 csinl NEW: ISO C 9x
1370 csqrt NEW: ISO C 9x
1371 csqrtf NEW: ISO C 9x
1372 csqrtl NEW: ISO C 9x
1373 ctan NEW: ISO C 9x
1374 ctanf NEW: ISO C 9x
1375 ctanh NEW: ISO C 9x
1376 ctanhf NEW: ISO C 9x
1377 ctanhl NEW: ISO C 9x
1378 ctanl NEW: ISO C 9x
1379 des_setparity NEW: Secure RPC
1380 ecb_crypt NEW: Secure RPC
1381 endutxent NEW: Unix98
1382 exp10 NEW: ISO C 9x
1383 exp10f NEW: ISO C 9x
1384 exp10l NEW: ISO C 9x
1385 exp2 NEW: ISO C 9x
1386 exp2f NEW: ISO C 9x
1387 exp2l NEW: ISO C 9x
1388 fattach NEW: STREAMS
1389 fdetach NEW: STREAMS
1390 fdim NEW: ISO C 9x
1391 fdimf NEW: ISO C 9x
1392 fdiml NEW: ISO C 9x
1393 feclearexcept NEW: ISO C 9x
1394 fegetenv NEW: ISO C 9x
1395 fegetexceptflag NEW: ISO C 9x
1396 fegetround NEW: ISO C 9x
1397 feholdexcept NEW: ISO C 9x
1398 feof_locked REMOVED
1399 feraiseexcept NEW: ISO C 9x
1400 ferror_locked REMOVED
1401 fesetenv NEW: ISO C 9x
1402 fesetexceptflag NEW: ISO C 9x
1403 fesetround NEW: ISO C 9x
1404 fetestexcept NEW: ISO C 9x
1405 feupdateenv NEW: ISO C 9x
1406 fflush_locked REMOVED
1407 ffsl NEW: GNU ext.
1408 ffsll NEW: GNU ext.
1409 fgetpos64 NEW: LFS
1410 fgets_unlocked NEW: GNU ext.
1411 fileno_locked REMOVED
1412 fma NEW: ISO C 9x
1413 fmaf NEW: ISO C 9x
1414 fmal NEW: ISO C 9x
1415 fmax NEW: ISO C 9x
1416 fmaxf NEW: ISO C 9x
1417 fmaxl NEW: ISO C 9x
1418 fmin NEW: ISO C 9x
1419 fminf NEW: ISO C 9x
1420 fminl NEW: ISO C 9x
1421 fmtmsg NEW: Unix98
1422 fopen64 NEW: LFS
1423 fputc_locked REMOVED
1424 fputs_unlocked NEW: GNU ext.
1425 fread_unlocked NEW: GNU ext.
1426 freopen64 NEW: LFS
1427 fseeko NEW: Unix98
1428 fsetpos64 NEW: LFS
1429 fstatfs64 NEW: LFS
1430 fstatvfs NEW: Unix98
1431 fstatvfs64 NEW: LFS
1432 ftello NEW: Unix98
1433 ftello64 NEW: LFS
1434 ftruncate64 NEW: LFS
1435 ftw64 NEW: LFS
1436 fwrite_unlocked NEW: GNU ext.
1437 gai_strerror NEW: IPv6
1438 gamma_r REMOVED
1439 gammaf_r REMOVED
1440 gammal_r REMOVED
1441 getchar_locked REMOVED
1442 getdate NEW: Unix98
1443 getdate_err NEW: Unix98
1444 getdate_r NEW: GNU ext.
1445 getmsg NEW: STREAMS
1446 getnameinfo NEW: IPv6
1447 getnetname NEW: Secure RPC
1448 getpmsg NEW: STREAMS
1449 getpt NEW: Unix98 PTY
1450 getrlimit64 NEW: LFS
1451 getutxent NEW: Unix98
1452 getutxid NEW: Unix98
1453 getutxline NEW: Unix98
1454 glob64 NEW: GNU ext.
1455 globfree64 NEW: GNU ext.
1456 gnu_get_libc_release NEW: GNU ext.
1457 gnu_get_libc_version NEW: GNU ext.
1458 grantpt NEW: Unix98 PTY
1459 host2netname NEW: Secure RPC
1460 iconv NEW: iconv
1461 iconv_close NEW: iconv
1462 iconv_open NEW: iconv
1463 if_freenameindex NEW: IPv6
1464 if_indextoname NEW: IPv6
1465 if_nameindex NEW: IPv6
1466 if_nametoindex NEW: IPv6
1467 in6addr_any NEW: IPv6
1468 in6addr_loopback NEW: IPv6
1469 inet6_isipv4mapped NEW: IPv6
1470 isastream NEW: STREAMS
1471 iswblank NEW: GNU ext.
1472 key_decryptsession NEW: Secure RPC
1473 key_decryptsession_pk NEW: Secure RPC
1474 key_encryptsession NEW: Secure RPC
1475 key_encryptsession_pk NEW: Secure RPC
1476 key_gendes NEW: Secure RPC
1477 key_get_conv NEW: Secure RPC
1478 key_secretkey_is_set NEW: Secure RPC
1479 key_setnet NEW: Secure RPC
1480 key_setsecret NEW: Secure RPC
1481 llrint NEW: ISO C 9x
1482 llrintf NEW: ISO C 9x
1483 llrintl NEW: ISO C 9x
1484 llround NEW: ISO C 9x
1485 llroundf NEW: ISO C 9x
1486 llroundl NEW: ISO C 9x
1487 log2 NEW: ISO C 9x
1488 log2f NEW: ISO C 9x
1489 log2l NEW: ISO C 9x
1490 lrint NEW: ISO C 9x
1491 lrintf NEW: ISO C 9x
1492 lrintl NEW: ISO C 9x
1493 lround NEW: ISO C 9x
1494 lroundf NEW: ISO C 9x
1495 lroundl NEW: ISO C 9x
1496 lseek64 NEW: LFS
1497 makecontext NEW: Unix98
1498 mempcpy NEW: GNU ext.
1499 mmap64 NEW: LFS
1500 moncontrol REMOVED
1501 modify_ldt NEW: kernel
1502 nan NEW: ISO C 9x
1503 nanf NEW: ISO C 9x
1504 nanl NEW: ISO C 9x
1505 nearbyint NEW: ISO C 9x
1506 nearbyintf NEW: ISO C 9x
1507 nearbyintl NEW: ISO C 9x
1508 netname2host NEW: Secure RPC
1509 netname2user NEW: Secure RPC
1510 nexttoward NEW: ISO C 9x
1511 nexttowardf NEW: ISO C 9x
1512 nexttowardl NEW: ISO C 9x
1513 nftw NEW: Unix98
1514 nftw64 NEW: LFS
1515 open64 NEW: LFS
1516 passwd2des NEW: Secure RPC
1517 pow10 NEW: GNU ext.
1518 pow10f NEW: GNU ext.
1519 pow10l NEW: GNU ext.
1520 pread NEW: Unix98
1521 pread64 NEW: LFS
1522 printf_size NEW: GNU ext.
1523 printf_size_info NEW: GNU ext.
1524 profil_counter REMOVED
1525 pthread_mutexattr_getkind_np REPLACED
1526 pthread_mutexattr_setkind_np REPLACED
1527 ptsname NEW: Unix98 PTY
1528 ptsname_r NEW: Unix98 PTY
1529 putc_locked REMOVED
1530 putchar_locked REMOVED
1531 putgrent NEW: GNU ext.
1532 putmsg NEW: STREAMS
1533 putpmsg NEW: STREAMS
1534 pututxline NEW: Unix98
1535 pwrite NEW: Unix98
1536 pwrite64 NEW: LFS
1537 readdir64 NEW: LFS
1538 readdir64_r NEW: LFS
1539 remquo NEW: ISO C 9x
1540 remquof NEW: ISO C 9x
1541 remquol NEW: ISO C 9x
1542 round NEW: ISO C 9x
1543 roundf NEW: ISO C 9x
1544 roundl NEW: ISO C 9x
1545 rtime NEW: GNU ext.
1546 scalbln NEW: ISO C 9x
1547 scalblnf NEW: ISO C 9x
1548 scalblnl NEW: ISO C 9x
1549 scandir64 NEW: LFS
1550 sendfile NEW: kernel
1551 setcontext NEW: Unix98
1552 setrlimit64 NEW: LFS
1553 setutxent NEW: Unix98
1554 sighold NEW: Unix98
1555 sigignore NEW: Unix98
1556 sigqueue NEW: POSIX.1b
1557 sigrelse NEW: Unix98
1558 sigset NEW: POSIX.1b
1559 sigtimedwait NEW: POSIX.1b
1560 sigwaitinfo NEW: POSIX.1b
1561 sincos NEW: GNU ext.
1562 sincosf NEW: GNU ext.
1563 sincosl NEW: GNU ext.
1564 statfs64 NEW: LFS
1565 statvfs NEW: Unix98
1566 statvfs64 NEW: LFS
1567 strcasestr NEW: GNU ext.
1568 strtoimax NEW: ISO C 9x
1569 strtoumax NEW: ISO C 9x
1570 strverscmp NEW: GNU ext.
1571 svcauthdes_stats NEW: Secure RPC
1572 svcunix_create NEW: sunrpc etx
1573 svcunixfd_create NEW: sunrpc ext
1574 swapcontext NEW: Unix98
1575 tcgetsid NEW: Unix98 PTY
1576 tdestroy NEW: GNU ext.
1577 tgamma NEW: ISO C 9x
1578 tgammaf NEW: ISO C 9x
1579 tgammal NEW: ISO C 9x
1580 tmpfile64 NEW: LFS
1581 trunc NEW: ISO C 9x
1582 truncate64 NEW: LFS
1583 truncf NEW: ISO C 9x
1584 truncl NEW: ISO C 9x
1585 umount2 NEW: kernel
1586 unlockpt NEW: Unix98 PTY
1587 updwtmpx NEW: Unix98
1588 user2netname NEW: Secure RPC
1589 utmpxname NEW: Unix98
1590 versionsort NEW: GNU ext.
1591 versionsort64 NEW: GNU ext.
1592 waitid NEW: Unix98
1593 wcscasecmp NEW: GNU ext.
1594 wcsncasecmp NEW: GNU ext.
1595 wcsnlen NEW: GNU ext.
1596 wcstoimax NEW: ISO C 9x
1597 wcstoll NEW: ISO C 9x
1598 wcstoull NEW: ISO C 9x
1599 wcstoumax NEW: ISO C 9x
1600 wcswcs NEW: Unix98
1601 wordexp NEW: POSIX.2
1602 wordfree NEW: POSIX.2
1603 write_profiling REMOVED
1604 xdecrypt NEW: Secure RPC
1605 xdr_authdes_cred NEW: Secure RPC
1606 xdr_authdes_verf NEW: Secure RPC
1607 xdr_cryptkeyarg NEW: Secure RPC
1608 xdr_cryptkeyarg2 NEW: Secure RPC
1609 xdr_cryptkeyres NEW: Secure RPC
1610 xdr_getcredres NEW: Secure RPC
1611 xdr_key_netstarg NEW: Secure RPC
1612 xdr_key_netstres NEW: Secure RPC
1613 xdr_keybuf NEW: Secure RPC
1614 xdr_keystatus NEW: Secure RPC
1615 xdr_netnamestr NEW: Secure RPC
1616 xdr_sizeof NEW: Secure RPC
1617 xdr_unixcred NEW: sunrpc ext
1618 xencrypt NEW: Secure RPC
1619 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1620 \f
1621 Version 2.0.6
1623 * more bug fixes
1625 \f
1626 Version 2.0.5
1628 * more bug fixes
1630 * inet_ntoa is thread-safe
1632 * updwtmp is moved from libutil to libc
1634 * rewrite of cbrt function
1636 * update of timezone data
1637 \f
1638 Version 2.0.4
1640 * more bug fixes
1641 \f
1642 Version 2.0.3
1644 * more bug fixes
1645 \f
1646 Version 2.0.2
1648 * more bug fixes
1650 * add atoll function
1652 * fix complex problems in Berkeley DB code
1654 * fix math functions
1655 \f
1656 Version 2.0.1
1658 * fixed lots of header problems (especially Linux/GNU specific)
1660 * dynamic loader preserves all registers
1662 * Roland McGrath provided support for handling of auxiliary objects in
1663 the ELF dynamic loader.
1665 * support for parallel builds is improved
1666 \f
1667 Version 2.0
1669 * GNU extensions are no longer declared by default. To enable them you
1670 must define the macro `_GNU_SOURCE' in your program or compile with
1671 `-D_GNU_SOURCE'.
1673 * The library has changed from using GNU ld symbol aliases to using weak
1674 symbols where available. The ELF object file format supports weak
1675 symbols; GNU ld also supports weak symbols in the a.out format. (There
1676 is also now support for other GNU ld extensions in ELF. Use the
1677 `--with-elf' option to configure to indicate you have ELF, and
1678 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1679 of many files which contained only symbol aliases, reducing the size of
1680 the source and the compiled library; many other files were renamed to
1681 less cryptic names previously occupied by the symbol alias files.
1682 There is a new header file <elf.h> for programs which operate on
1683 files in the ELF format.
1685 * Converted to Autoconf version 2, so `configure' has more options.
1686 Run `configure --help' to see the details.
1688 * The library can now be configured to build profiling, highly-optimized
1689 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1690 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1691 `configure' enable building these extra libraries. The shared library is
1692 built by default when using both ELF and GNU ld. When shared libraries
1693 are enabled, the new library `-ldl' is available for arbitrary run-time
1694 loading of shared objects; its interface is defined in <dlfcn.h>. The
1695 new header file <link.h> gives access to the internals of the run-time
1696 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1697 application of same name on other systems and it provides information
1698 about dynamically linked binaries.
1700 * The C library now provides the run-time support code for profiling
1701 executables compiled with `-pg'. Programs can control the profiling code
1702 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1703 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1704 the support for this file format was contributed by David Mosberger-Tang.
1706 * The math code has been replaced with a math library based on fdlibm from
1707 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1708 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1709 functions. The math functions now reside in a separate library, so
1710 programs using them will need to use `-lm' their linking commands.
1712 * John C. Bowman contributed optimized ix87 assembler inline functions.
1714 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1715 mechanism similar to that found in Solaris 2. This is now used for the
1716 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1717 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1718 file controls what services are used for each individual database. This
1719 works by loading shared libraries with names specified in `nsswitch.conf',
1720 so service modules can be changed or added at any time without even
1721 relinking any program. Currently there are the file, db, and NIS based
1722 NSS services available.
1724 * The new functions `strtoq' and `strtouq' parse integer values from
1725 strings, like `strtol' and `strtoul', but they return `long long int' and
1726 `unsigned long long int' values, respectively (64-bit quantities).
1728 * The new functions `strtof' and `strtold' parse floating-point values from
1729 strings, like `strtod', but they return `float' and `long double' values,
1730 respectively (on some machines `double' and `long double' are the same).
1732 * Ulrich Drepper has contributed new implementations of the floating-point
1733 printing and reading code used in the `printf' family of functions and
1734 `strtod', `strtof', and `strtold'. These new functions are perfectly
1735 accurate, and much faster than the old ones.
1737 * The implementation of the POSIX locale model was completely rewritten by
1738 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1739 to compile the POSIX locale definition.
1741 * The former dummy implementations of the strcoll and strxfrm function are
1742 now replaced by fully functional code contributed by Ulrich Drepper. The
1743 collation information comes from the POSIX locale definitions.
1745 * The new header <langinfo.h> defines an interface for accessing
1746 various locale-dependent data (using the locale chosen with `setlocale').
1748 * Ulrich Drepper has contributed a new suite of functions for operation on
1749 wide-character and multibyte-character strings, in <wchar.h>;
1750 and classification and case conversion of wide characters, in <wctype.h>.
1751 These new functions are conforming to the ISO C, Amendement 1 specification.
1753 * There is now a second implementation of the standard I/O library available.
1754 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1755 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1757 * You can now use positional parameter specifications in format strings
1758 for the `printf' and `scanf' families of functions. For example,
1759 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1760 ``Number 6, Mr Jones''. This is mainly useful when providing different
1761 format strings for different languages, whose grammars may dictate
1762 different orderings of the values being printed. To support this
1763 feature, the interface for `register_printf_handler' has changed; see
1764 the header file <printf.h> for details.
1766 * The `printf' and `scanf' families of functions now understand a new
1767 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1768 to group numbers as indicated by the locale; for `scanf' and friends, this
1769 says to accept as valid only a number with all the proper grouping
1770 separators in the right places. In the default "C" locale, numbers are
1771 not grouped; but locales for specific countries will define the usual
1772 conventions (i.e. separate thousands with `,' in the US locale).
1774 * The pgrp functions have been regularized, slightly incompatibly but much
1775 less confusingly. The core functions are now `getpgid' and `setpgid',
1776 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1777 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1778 provided for compatibility. There is no longer an incompatible `getpgrp'
1779 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1781 * The new header file <fts.h> and suite of functions simplify programs that
1782 operate on directory trees. This code comes from 4.4 BSD.
1784 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1785 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1786 NSS scheme used in glibc.
1788 * There is a new malloc debugging hook `__memalign_hook'.
1790 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1791 `unsigned int' in <sys/types.h>. These are for compatibility only and
1792 their use is discouraged.
1794 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1795 done differently, so that it works even without GNU ld.
1797 * New function `euidaccess' checks allowed access to a file like `access',
1798 but using the effective IDs instead of the real IDs.
1800 * The time zone data files have been updated for the latest and greatest
1801 local time conventions of the countries of the world.
1803 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1804 see <dirent.h>.
1806 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1807 for formatting floating-point numbers. They are provided only for
1808 compatibility; new programs should use `sprintf' instead. There are
1809 also equivalent function for the `long double' floating-point type and
1810 all functions also exist in a reentrant form.
1812 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1813 functions for maintaining the login-record files (primarily of use to
1814 system programs such as `login'), and convenient functions for
1815 allocating and initializing a pseudo-terminal (pty) device.
1817 * Ulrich Drepper has contributed new support for System V style
1818 shared memory and IPC on systems that support it.
1820 * Ulrich Drepper has contributed several miscellaneous new functions found
1821 in System V: The `hsearch' family of functions provide an effective
1822 implementation of hash tables; `a64l' and `l64a' provide a very simple
1823 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1824 number generator.
1826 * Ulrich Drepper has contributed new reentrant counterparts for the
1827 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1829 * Ulrich Drepper has contributed new, highly-optimized versions of several
1830 string functions for the i486/Pentium family of processors.
1832 * Ulrich Drepper has updated the Linux-specific code, based largely
1833 on work done in Hongjiu Lu's version of GNU libc for Linux.
1834 The GNU library now supports Linux versions 2.0.10 and later,
1835 using the ELF object file format (i[3456]86-*-linux).
1837 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1839 * David Mosberger-Tang and Richard Henderson have ported the C library
1840 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1841 dynamic linking support for ELF/Alpha.
1843 * Richard Henderson contributed several Alpha optimized assembler function
1844 for arithmetic and string handling.
1846 * Ulrich Drepper has contributed a new set of message catalog functions to
1847 support multiple languages using the <libintl.h> interface, for use with
1848 his new package GNU gettext. Translation volunteers have contributed
1849 catalogs of the library's messages in Spanish, German, and Korean.
1851 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1852 program and the `catgets' function for reading the catalog files it
1853 creates. (The <libintl.h> interface is preferred; we include the
1854 <nl_types.h> interface using `catgets' only for source compatibility with
1855 programs already written to use it.)
1857 * New header file <values.h> gives SVID-compatible names for <limits.h>
1858 constants.
1860 * Various new macros, declarations, and small header files for compatibility
1861 with 4.4 BSD.
1863 * New function `group_member' is a convenient way to check if a process has
1864 a given effective group ID.
1866 * When using GCC 2.7 and later, the socket functions are now declared in a
1867 special way so that passing an argument of type `struct sockaddr_in *',
1868 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1869 `struct sockaddr *' type, does not generate a type-clash warning.
1871 * New function `error' declared in header file <error.h> is a convenient
1872 function for printing error messages and optionally exiting; this is the
1873 canonical function used in GNU programs. The new functions `err', `warn',
1874 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1875 doing the same thing.
1877 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1878 POSIX.2 `glob' function to do ~ and {...} expansion.
1880 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1881 `clearenv' which is used in POSIX.9 is also available.
1883 * New function `getsid' returns session ID number on systems that support it.
1885 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1886 files <db.h> and <mpool.h> provide a rich set of functions for several
1887 types of simple databases stored in memory and in files, and <ndbm.h> is
1888 an old `ndbm'-compatible interface using the `db' functions. Link with
1889 `-ldb' to get these functions.
1891 * New macro `strdupa' copies a string like `strdup', but uses local stack
1892 space from `alloca' instead of dynamic heap space from `malloc'.
1894 * New function `strnlen' is like `strlen' but searches only a given maximum
1895 number of characters for the null terminator. `stpncpy', `strndup' and
1896 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1897 function.
1899 * New function `statfs' in header <sys/statfs.h>.
1901 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1902 provide convenient functions for operating on blocks of null-terminated
1903 strings.
1905 * A new suite of functions in <utmp.h> handle all the details of reading
1906 and writing the utmp file.
1908 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1909 Thorsten Kukuk.
1911 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1912 completely POSIX compliant and also implemented the extended functionality
1913 to handle alternate digit representation and alternate era date formats.
1915 * Ulrich Drepper provided an implementation of the `strptime' function
1916 defined in XPG4.2 which transforms a string into a `struct tm' value.
1918 * Paul Eggert provided the tzselect shell script as part of the timezone
1919 code. The shell script makes it easy to select the correct timezone
1920 specification.
1922 * The implementation of the malloc family of functions is completely replaced
1923 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1924 The implementation uses the mmap function (if available) and it is
1925 optimized for the use in multi threaded programs.
1927 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1928 functions. This new functionality is usable by specifying a special
1929 salt string and it is compatible with implementation on *BSD systems.
1931 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1932 `getsubopt' to handle second level command line options, `bsd_signal'
1933 to access BSD style `signal' functionality, the obsolete `regexp' style
1934 expression matcher.
1936 * the `lchown' function is available on system which support this
1937 functionality.
1939 * The implementation of the shadow password handling function was contributed
1940 by Ulrich Drepper.
1942 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1944 * POSIX.1g support was added. The <sys/select.h> header is available,
1945 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1946 implementation of `getaddrinfo'.
1947 \f
1948 Version 1.09
1950 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1952 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1953 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1955 * The new function `daemon' from 4.4 BSD is useful for server programs that
1956 want to put themselves in the background.
1958 * Joel Sherrill has contributed support for several standalone boards that
1959 run without an operating system.
1961 * `printf', `scanf' and friends now accept a `q' type modifier for long
1962 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1964 * All of the code taken from BSD (notably most of the math and networking
1965 routines) has been updated from the BSD 4.4-Lite release.
1967 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1969 * The new functions `getdomainname' and `setdomainname' fetch or change the
1970 YP/NIS domain name. These are system calls which exist on systems which
1971 have YP (aka NIS).
1973 * The time zone data files have been updated for the latest international
1974 conventions.
1976 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1977 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1978 \f
1979 Version 1.08
1981 * The C library now includes support for Sun RPC, from Sun's free
1982 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1983 are included. (There is still no support for YP.)
1985 * Tom Quinn has contributed a port of the C library to SGI machines running
1986 Irix 4 (mips-sgi-irix4).
1988 * The new `lockf' function is a simplified interface to the locking
1989 facilities of `fcntl', included for compatibility.
1991 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1993 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1995 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1996 compatibility.
1998 * The error message printed by `assert' for a failed assertion now includes
1999 the name of the program (if using GNU ld) and the name of the calling
2000 function (with versions of GCC that support this).
2002 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2004 * The library now includes the <sys/mman.h> header file and memory
2005 management functions `mmap', `munmap', `mprotect', `msync', and
2006 `madvise', on systems that support those facilities.
2008 * The interface for `mcheck' has changed slightly: the function called to
2009 abort the program when an allocation inconsistency is detected now takes
2010 an argument that indicates the type of failure. The new function
2011 `mprobe' lets you request a consistency check for a particular block at
2012 any time (checks are normally done only when you call `free' or `realloc'
2013 on a block).
2015 * It is now possible to easily cross-compile the C library, building on one
2016 system a library to run on another machine and/or operating system. All
2017 you need to do is set the variable `HOST_CC' in `configparms' to the
2018 native compiler for programs to run on the machine you are building on (a
2019 few generator programs are used on Unix systems); set `CC' to the
2020 cross-compiler.
2022 * The new function `fexecve' (only implemented on the GNU system) executes
2023 a program file given a file descriptor already open on the file.
2024 \f
2025 Version 1.07
2027 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2028 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2030 * You can set the variable `libprefix' in `configparms' to specify a prefix
2031 to be prepended to installed library files; this makes it easy to install
2032 the GNU C library to be linked as `-lgnuc' or whatever.
2034 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2035 copies a limited number of characters from a string, and returns the
2036 address of the last character written.
2038 * You no longer need to check for whether the installed `stddef.h' is
2039 compatible with the GNU C library. configure now checks for you.
2041 * You can now define a per-stream `fileno' function to convert the
2042 stream's cookie into an integral file descriptor.
2044 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2045 allocates zero bytes of storage, and returns a unique pointer which
2046 you can pass to `realloc' or `free'. The behavior is undefined if
2047 you dereference this pointer.
2049 * The C library now runs on Sony NEWS m68k machines running either
2050 NewsOS 3 or NewsOS 4.
2052 * The new `syscall' function is a system-dependent primitive function
2053 for invoking system calls. It has the canonical behavior on Unix
2054 systems, including unreliable return values for some calls (such as
2055 `pipe', `fork' and `getppid').
2057 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2058 to `EAGAIN', which is the preferred name. On systems whose kernels
2059 use two distinct codes, the C library now translates EWOULDBLOCK to
2060 EAGAIN in every system call function.
2061 \f
2062 Version 1.06
2064 * The GNU C Library Reference Manual is now distributed with the library.
2065 `make dvi' will produce a DVI file of the printed manual.
2066 `make info' will produce Info files that you can read on line using C-h i
2067 in Emacs or the `info' program.
2068 Please send comments on the manual to bug-glibc-manual@gnu.org.
2070 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2072 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2074 * Jason Merrill has contributed a port to the Sequent Symmetry running
2075 Dynix version 3 (i386-sequent-dynix).
2077 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2078 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2080 * New function `memory_warnings' lets you arrange to get warnings when
2081 malloc is running out of memory to allocate, like Emacs gives you.
2083 * The C library now contains the relocating allocator used in Emacs 19 for
2084 its editing buffers. This allocator (ralloc) minimizes allocation
2085 overhead and fragmentation by moving allocated regions around whenever it
2086 needs to. You always refer to a ralloc'd region with a "handle" (a
2087 pointer to a pointer--an object of type `void **').
2089 * There is a new `printf' format: `%m' gives you the string corresponding
2090 to the error code in `errno'.
2092 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2093 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2094 pass, the `a' modifier says to fill in a `char **' you pass with a
2095 malloc'd string.
2097 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2098 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2099 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2101 * `mkstemp' is a traditional Unix function to atomically create and open a
2102 uniquely-named temporary file.
2103 \f
2104 Version 1.05
2106 * The standard location for the file that says what the local timezone is
2107 has changed again. It is now `/usr/local/etc/localtime' (or more
2108 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2110 * The distribution no longer contains any files with names longer than 14
2111 characters.
2113 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2114 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2116 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2117 \f
2118 Version 1.04
2120 * The configuration process has changed quite a bit. The `configure'
2121 script is now used just like the configuration scripts for other GNU
2122 packages. The `sysdeps' directory hierarchy is much rearranged.
2123 The file `INSTALL' explains the new scheme in detail.
2125 * The header files no longer need to be processed into ANSI C and
2126 traditional C versions. There is just one set of files to install, and
2127 it will work with ANSI or old C compilers (including `gcc -traditional').
2129 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2130 MIPS DECStation running Ultrix 4.
2132 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2133 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2134 made itself into a shared library.
2136 * Yet further improved support for the i386, running 4.3 BSD-like systems
2137 (such as Mach 3 with the Unix single-server), or System V.
2139 * New function `strncasecmp' to do case-insensitive string comparison
2140 with limited length.
2142 * New function `strsep' is a reentrant alternative to `strtok'.
2144 * New functions `scandir' and `alphasort' for searching directories.
2146 * New function `setenv' is a better interface to `putenv'.
2148 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2149 function for traversing a directory tree.
2151 * The GNU obstack package is now also part of the C library.
2152 The new function `open_obstack_stream' creates a stdio stream that
2153 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2154 formatted output directly to an obstack.
2156 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2157 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2159 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2161 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2162 things to your strings.
2164 * There are some new test programs: test-fseek, testmb, and testrand.
2166 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2167 These ports are not finished, but are a good starting place for really
2168 supporting those systems.
2170 * `/etc/localtime' is now the standard location for the file that says what
2171 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2172 This follows the general principle that `/etc' is the place for all local
2173 configuration files.
2175 * The C library header files now use `extern "C"' when used by the C++
2176 compiler, so the C library should now work with C++ code.
2178 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2179 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2180 in <strings.h>.)
2182 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2183 function which uses the `merge sort' algorithm, and is said to be
2184 significantly faster than the old GNU `qsort' function. Merge sort is
2185 now the standard `qsort' function. The new algorithm can require a lot
2186 of temporary storage; so, the old sorting function is called when the
2187 required storage is not available.
2189 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2190 provides the Unix `crypt' function, plus some other entry points.
2192 * The code and header files taken from 4.4 BSD have been updated with the
2193 latest files released from Berkeley.
2194 \f
2195 ----------------------------------------------------------------------
2196 Copyright information:
2198 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2200 Permission is granted to anyone to make or distribute verbatim copies
2201 of this document as received, in any medium, provided that the
2202 copyright notice and this permission notice are preserved,
2203 thus giving the recipient permission to redistribute in turn.
2205 Permission is granted to distribute modified versions
2206 of this document, or of portions of it,
2207 under the above conditions, provided also that they
2208 carry prominent notices stating who last changed them.
2209 \f
2210 Local variables:
2211 version-control: never
2212 fill-column: 76
2213 End: