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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 11120, 11561, 12723, 13550, 13889, 13951, 14142, 14176, 14200, 14317,
13 14327, 14496, 14812, 14920, 14964, 14981, 14982, 14985, 14994, 14996,
14 15003, 15006, 15020, 15023, 15036, 15054, 15055, 15062, 15078, 15160,
15 15232, 15234, 15283, 15285, 15287.
17 * Add support for calling C++11 thread_local object destructors on thread
18 and program exit. This needs compiler support for offloading C++11
19 destructor calls to glibc.
21 * Improved worst case performance of libm functions with double inputs and
22 output.
24 * Support for priority inherited mutexes in pthread condition variables on
25 non-x86 architectures.
27 * Added a benchmark framework to track performance of functions in glibc.
29 \f
30 Version 2.17
32 * The following bugs are resolved with this release:
34 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
35 9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
36 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
37 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
38 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
39 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298, 14303,
40 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417,
41 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519,
42 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576,
43 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648,
44 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743,
45 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805,
46 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835,
47 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872, 14879,
48 14889, 14893, 14898, 14914.
50 * Optimization of memcpy for MIPS.
52 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
53 EMFILE has been fixed (Bugzilla #14889).
55 * The add-on ports collection is now distributed in the "ports" subdirectory
56 of the main GNU C Library distribution, rather than separately.
58 * Port to ARM AArch64 contributed by Linaro.
60 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
61 Optimized versions of memcpy, memset, and memcmp added for System z10 and
62 zEnterprise z196.
63 Implemented by Andreas Krebbel.
65 * The new function secure_getenv allows secure access to the environment,
66 returning NULL if running in a SUID/SGID process. This function replaces
67 the internal function __secure_getenv.
69 * SystemTap static probes have been added into the dynamic linker.
70 Implemented by Gary Benson.
72 * Optimizations of string functions strstr, strcasestr and memmem.
73 Implemented by Maxim Kuvyrkov.
75 * The minimum Linux kernel version that this version of the GNU C Library
76 can be used with is 2.6.16.
78 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
79 powerpc POWER7. Implemented by Will Schmidt.
81 * New configure option --disable-nscd builds the C library such that it
82 never attempts to contact the Name Service Caching Daemon (nscd).
83 New configure option --disable-build-nscd avoids building nscd itself;
84 this is the default if --disable-nscd is used.
86 * Improved support for cross-compilation, including cross-testing and
87 bootstrap builds without a previously built glibc.
89 * Several testsuite tests are now able to test multiple IFUNC variants of an
90 interface, rather than just testing the one that would be chooen by
91 default.
93 * New configure options --with-bugurl and --with-pkgversion, for
94 distributors to use to embed their bug-reporting and package version
95 information in --help and --version output.
97 * The ttyname and ttyname_r functions on Linux now fall back to searching for
98 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
99 allows creation of chroots without the procfs mounted on /proc.
101 * The `crypt' function now fails if passed salt bytes that violate the
102 specification for those values. On Linux, the `crypt' function will
103 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
104 enabled, and fail on encrypted strings using the MD5 or DES algorithm
105 when the mode is enabled.
107 * The `clock_*' suite of functions (declared in <time.h>) is now available
108 directly in the main C library. Previously it was necessary to link with
109 -lrt to use these functions. This change has the effect that a
110 single-threaded program that uses a function such as `clock_gettime' (and
111 is not linked with -lrt) will no longer implicitly load the pthreads
112 library at runtime and so will not suffer the overheads associated with
113 multi-thread support in other code such as the C++ runtime library.
115 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
116 sat_IN, and szl_PL.
117 \f
118 Version 2.16
120 * The following bugs are resolved with this release:
122 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
123 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
124 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
125 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
126 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
127 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
128 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
129 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
130 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
131 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
132 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
133 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
134 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
135 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
136 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
137 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
138 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
139 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
140 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
141 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
142 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
143 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
144 14277, 14278.
146 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
147 configuring glibc with:
148 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
149 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
150 Implemented by H.J. Lu.
152 * ISO C11 support:
154 + define static_assert
156 + do not declare gets
158 + declare at_quick_exit and quick_exit also for ISO C11
160 + aligned_alloc. NB: The code is deliberately allows the size parameter
161 to not be a multiple of the alignment. This is a moronic requirement
162 in the standard but it is only a requirement on the caller, not the
163 implementation.
165 + timespec_get added
167 + uchar.h support added
169 + CMPLX, CMPLXF, CMPLXL added
171 Implemented by Ulrich Drepper.
173 * Support for the IA-64 has been moved to ports.
175 * Remove support for anything but ELF binary format
177 * Checking versions of poll, ppoll added.
178 Implemented by Ulrich Drepper.
180 * More generic and 64-bit performance optimizations to math functions.
181 Implemented by Ulrich Drepper.
183 * New configure option --enable-obsolete-rpc makes the deprecated RPC
184 headers and functions available at compile time as they were before
185 version 2.14. This option will be removed at some time in the future
186 after the TI-RPC library becomes fully sufficient for the needs of
187 existing applications.
189 * Compatibility code for Linux kernel versions before 2.4 has been removed.
190 Note that glibc is not expected to work with any Linux kernel version
191 before 2.6.
193 * New header <sys/auxv.h> and function getauxval allowing easy access to
194 the AT_* key-value pairs passed from the Linux kernel. The header also
195 defines the HWCAP_* bits associated with the AT_HWCAP key.
197 * New locales: mag_IN
199 * New configure option --enable-systemtap builds SystemTap static probes
200 into libc for setjmp and longjmp and into libpthread for various operations.
201 So far the setjmp/longjmp probes and some of the libpthread probes are
202 provided only for i*86 and x86_64.
203 Implemented by Roland McGrath and Rayson Ho.
205 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
207 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
208 and Will Schmidt.
210 * More optimized functions for SPARC. Implemented by David S. Miller.
212 * Improved support for cross-compilation, especially bootstrap builds
213 without a previously built glibc.
215 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
216 Chris Metcalf from Tilera.
218 * Support for the old ARM ABI has been removed from ports. Only the EABI is
219 now supported for ARM processors.
221 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
222 as the name of the dynamic linker, to distinguish it from the
223 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
225 * Support for CRIS has been removed from ports.
227 * A new class of installed header has been documented for low-level
228 platform-specific functionality. PowerPC added the first instance with a
229 function to provide time base register access. Contributed by Tulio
230 Magno Quites Machado Filho.
232 * ix86 configurations now install header files that are consistent with
233 what x86-64 configurations install. These same header files can be used
234 for -m32, -m64, or -mx32 builds.
235 Contributed by H.J. Lu.
237 * Math library bug fixes. A thorough audit of all open math library bugs was
238 conducted by Joseph Myers. Significant progress was made on many math
239 library bugs resulting in more accurate exceptions and function results.
240 Many thanks to all those that contributed including Andreas Jaeger for his
241 patch review and work on the x87 trigonometric instruction issues.
243 * Timezone data is no longer installed. Timezone-related binaries and scripts
244 will continue to be installed. Users should obtain their timezone data from
245 their distribution provider or from the tzdata package at
246 <ftp://munnari.oz.au/pub/>.
247 \f
248 Version 2.15
250 * The following bugs are resolved with this release:
252 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
253 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
254 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
255 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
256 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
257 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
258 13484, 13506, 13515, 13523, 13524, 13538, 13540
260 * New program pldd to list loaded object of a process
261 Implemented by Ulrich Drepper.
263 * Add nss_db support back to glibc. No more dependency on Berkeley db
264 and support for initgroups lookups.
265 Implemented by Ulrich Drepper.
267 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
268 Contributed by HJ Lu.
270 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
271 Contributed by HJ Lu.
273 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
274 on x86-32 and x86-64.
275 Contributed by Liubov Dmitrieva.
277 * Optimized strchr and strrchr for SSE on x86-32.
278 Contributed by Liubov Dmitrieva.
280 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
281 for x86-64 and x86-32.
282 Contributed by Liubov Dmitrieva.
284 * New interfaces: scandirat, scandirat64
285 Implemented by Ulrich Drepper.
287 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
288 Implemented by Ulrich Drepper.
290 * nscd now also caches the netgroup database.
291 Implemented by Ulrich Drepper.
293 * Integrate libm with gcc's -ffinite-math-only option.
294 Implemented by Ulrich Drepper.
296 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
297 to math functions. Implemented by Ulrich Drepper.
299 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
300 Implemented by Ulrich Drepper.
302 * New Linux interfaces: process_vm_readv, process_vm_writev
304 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
305 Implemented by Ulrich Drepper.
307 * Optimized nearbyint and strcasecmp for PPC.
308 Implemented by Adhemerval Zanella.
310 * New locales: bho_IN, unm_US, es_CU, ta_LK
311 \f
312 Version 2.14
314 * The following bugs are resolved with this release:
316 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
317 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
318 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
319 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
320 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
321 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
322 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
323 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
324 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
325 12795, 12811, 12813, 12814, 12841
327 * The RPC implementation in libc is obsoleted. Old programs keep working
328 but new programs cannot be linked with the routines in libc anymore.
329 Programs in need of RPC functionality must be linked against TI-RPC.
330 The TI-RPC implementation is IPv6 enabled and there are other benefits.
332 Visible changes of this change include (obviously) the inability to link
333 programs using RPC functions without referencing the TI-RPC library and the
334 removal of the RPC headers from the glibc headers.
335 Implemented by Ulrich Drepper.
337 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
338 syncfs, setns, sendmmsg
340 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
341 yue_HK, lij_IT, mhr_RU
343 * New encodings: CP770, CP771, CP772, CP773, CP774
345 * New program sotruss to trace calls through PLTs
346 Implemented by Ulrich Drepper.
348 * The malloc hook implementation is marked deprecated and will be removed
349 from the default implementation in the next version. The design never
350 worked ever since the introduction of threads. Even programs which do
351 not create threads themselves can use multiple threads created internally.
352 \f
353 Version 2.13
355 * The following bugs are resolved with this release:
357 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
358 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
359 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
360 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
361 12378, 12394, 12397
363 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
365 * POWER7 optimizations: memset, memcmp, strncmp
367 * New optimized string functions for x86-64: strnlen (SSE2),
368 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
369 Implemented by Ulrich Drepper.
370 \f
371 Version 2.12
373 * The following bugs are resolved with this release:
375 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
376 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
377 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
378 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
379 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
380 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
381 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
382 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
384 * New interfaces: pthread_getname_np, pthread_setname_np
386 * New Linux interface: recvmmsg
388 * STT_GNU_IFUNC implemented for Sparc by David Miller.
390 * The dynamic linker now recognizes supported ABI versions from the
391 EI_ABIVERSION field in the ELF header.
392 Implemented by Ulrich Drepper.
394 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
395 will not be used to fill in password fields in the passwd.byname replies.
396 Instead it is used to synthesize the shadow.byname table, should it be
397 missing. This is a useful mode in some installations involving Solaris.
398 Implemented by Ulrich Drepper.
400 * New locales: kok_IN, sq_MK, cv_RU
401 \f
402 Version 2.11
404 * The following bugs are resolved with this release:
406 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
407 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
408 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
409 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
410 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
411 10789, 10817, 10823, 10840, 10847
413 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
414 mkostemps64
415 Implemented by Ulrich Drepper.
417 * Checking version of longjmp added that fails if an uninitialized stack
418 frame would be created. Implemented by Ulrich Drepper.
420 * STT_GNU_IFUNC is now supported in static executables.
421 Implemented by H.J. Lu.
423 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
425 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
426 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
427 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
428 Contributed by H.J. Lu.
430 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
431 Implemented by Ulrich Drepper.
433 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
434 strstr, strcasestr.
435 Contributed by H.J. Lu.
437 * Support for fma instruction in AVX on x86-64.
438 Implemented by H.J. Lu and Ulrich Drepper.
440 * AVX support in x86-64 auditing support in ld.so.
441 Implemented by H.J. Lu.
443 * STB_GNU_UNIQUE support added.
444 Implemented by Ulrich Drepper.
446 * Implement second fallback mode for optimized DNS lookup for even more
447 broken environments. If two requests from the same port are not
448 handled correctly close the socket and open a new one before sending
449 the second request. The 'single-request-reopen' option in /etc/resolv.conf
450 can be used to select this mode right away, instead of rediscovering the
451 necessity is every process again.
452 Implemented by Ulrich Drepper.
454 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
455 Implemented by Adam Tkac.
457 * Optimized iconv conversions for S390x.
458 Implemented by Andreas Krebbel.
460 * Using condvars with PI mutexes is now more efficient due to kernel
461 support for requeueing to PI futexes. NPTL support added for x86-64.
462 Implemented by Ulrich Drepper.
464 * New locales: ps_AF, my_MM
465 \f
466 Version 2.10
468 * The following bugs are resolved with this release:
470 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
471 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
472 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
473 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
474 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
476 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
477 Implemented by Ulrich Drepper.
479 * New Linux interfaces: accept4, fallocate, fallocate64.
480 Implemented by Ulrich Drepper.
482 * Correct declarations of string function when used in C++ code. This
483 could lead to compile errors for invalid C++ code.
485 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
486 now in POSIX.
488 * New POSIX 2008 interface: psiginfo
489 Implemented by Ulrich Drepper.
491 * New ISO C++1x interfaces: quick_exit, at_quick_exit
492 Implemented by Ulrich Drepper.
494 * Support for selecting between multiple function definitions at runtime
495 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
497 * The libcrypt library can now use the hash function implementations in
498 NSS. Implemented by Ulrich Drepper.
500 * The malloc implementation can be compiled to be less memory efficient
501 but higher performing in multi-threaded programs.
502 Implemented by Ulrich Drepper.
504 * New locales: nan_TW@latin, ks_IN
506 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
507 Implemented by Ulrich Drepper.
509 * Extended printf hook support. It is possible to use user-defined types
510 and extend existing format specifiers.
511 Implemented by Ulrich Drepper.
513 * Handling for group shadow files has been added.
514 Implemented by Ulrich Drepper.
516 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
517 servers (the case, e.g., for some people using the built-in DNS
518 server in ADSL modems/routers). There is a once-per-process timeout
519 in case of a broken server. To avoid it, users can run nscd or put
520 'options single-request' in /etc/resolv.conf.
521 Implemented by Ulrich Drepper.
522 \f
523 Version 2.9
525 * The following bugs are resolved with this release:
527 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
528 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
529 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
530 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
531 6968, 6974, 6980, 6995, 7008, 7009, 7029
533 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
534 up at the same time. Implemented by Ulrich Drepper.
536 * TLS descriptors for LD and GD on x86 and x86-64.
537 Implemented by Alexandre Oliva.
539 * getaddrinfo now handles DCCP and UDPlite.
540 Implemented by Ulrich Drepper.
542 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
543 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
544 Implemented by Ulrich Drepper.
546 * New implementation of memmem, strstr, and strcasestr which is O(n).
547 Implemented by Eric Blake.
549 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
551 * Implement "e" option for popen to open file descriptor with the
552 close-on-exec flag set. Implemented by Ulrich Drepper.
554 * Implement "b" mode for fmemopen. In this mode writes writes don't
555 implicitly add a NUL byte and seeks from the end of the buffer really
556 use the buffer end, not the string length as the basis.
557 Implemented by Ulrich Drepper.
559 * Many functions, exported and internal, now atomically set the close-on-exec
560 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
562 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
563 Sinhala)
564 Implemented by Pravin Satpute.
566 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
567 \f
568 Version 2.8
570 * The following bugs are resolved with this release:
572 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
573 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
574 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
575 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
576 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
577 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
578 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
580 * New locales: bo_CN, bo_IN, shs_CA.
582 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
584 * Sorting rules for some Indian languages (Devanagari and Gujarati).
585 Implemented by Pravin Satpute.
587 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
589 * nscd caches now all timeouts for DNS entries
590 Implemented by Ulrich Drepper.
592 * nscd is more efficient and wakes up less often.
593 Implemented by Ulrich Drepper.
595 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
596 vdprintf, and obstack_vprintf.
597 Implemented by Jakub Jelinek.
599 * Faster memset for x86-64.
600 Implemented by Harsha Jagasia and H.J. Lu.
602 * Faster memcpy on x86.
603 Implemented by Ulrich Drepper.
605 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
606 Implemented by Ulrich Drepper.
608 * Faster sqrt and sqrtf implemention for some PPC variants.
609 Implemented by Steven Munroe.
610 \f
611 Version 2.7
613 * The following bugs are resolved with this release:
615 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
616 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
617 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
618 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
619 5071, 5103, 5104, 5112, 5113, 5184, 5186
621 * More checking functions: fread, fread_unlocked, open*, mq_open.
622 Implemented by Jakub Jelinek and Ulrich Drepper.
624 * Extend fortification to C++. Implemented by Jakub Jelinek.
626 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
627 by not recognizing 'a' as a modifier when those specs are requested.
628 Implemented by Jakub Jelinek.
630 * PPC optimizations to math and string functions.
631 Implemented by Steven Munroe.
633 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
634 options to be passed. Implemented by Ulrich Drepper.
636 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
638 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
639 Implemented by Ulrich Drepper.
641 * Handle private futexes in the NPTL implementation.
642 Implemented by Jakub Jelinek and Ulrich Drepper.
644 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
645 Implemented by Roland McGrath and Ulrich Drepper.
647 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
649 * SHA-256 and SHA-512 based password encryption.
650 Implemented by Ulrich Drepper.
652 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
653 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
654 yo_NG.
656 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
657 Implemented by Ulrich Drepper.
658 \f
659 Version 2.6
661 * The following bugs are resolved with this release:
663 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
664 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
665 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
666 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
667 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
668 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
669 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
670 4702, 4858
672 * New Linux interfaces: epoll_pwait, sched_getcpu.
674 * New generic interfaces: strerror_l.
676 * nscd can now cache the services database. Implemented by Ulrich Drepper.
677 \f
678 Version 2.5
680 * The following bugs are resolved with this release:
682 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
683 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
684 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
685 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
686 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
687 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
688 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
689 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
690 3225, 3251, 3252, 3253, 3273
692 * For Linux, the sorting of addresses returned by getaddrinfo now also
693 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
694 Implemented by Ulrich Drepper.
696 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
697 Implemented by Ulrich Drepper.
699 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
701 * New iconv module for MIK. Contributed by Alexander Shopov.
703 * For sites with broken group and/or passwd database, the auto-propagate
704 option of nscd can prevent creating ID lookup entries from the results
705 of a name lookup and vice versa. This usually is no problem but some
706 site might have problems with the default behavior.
707 Implemented by Ulrich Drepper.
709 * Iterating over entire database in NIS can be slow. With the
710 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
711 to trade time for memory. The entire database will be read at once.
712 Implemented by Ulrich Drepper.
714 * The interfaces introduced in RFC 3542 have been implemented by
715 Ulrich Drepper.
717 * Support for the new ELF hash table format was added by Ulrich Drepper.
719 * Support for priority inheritance mutexes added by Jakub Jelinek and
720 Ulrich Drepper.
722 * Support for priority protected mutexes added by Jakub Jelinek.
724 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
725 or_IN, csb_PL, fy_NL, sr_ME.
726 \f
727 Version 2.4
729 * More overflow detection functions.
731 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
732 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
734 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
735 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
736 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
737 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
738 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
739 by Masahide Washizawa.
741 * It is now possible to install audit libraries for the dynamic linker using
742 LD_AUDIT. Implemented by Ulrich Drepper.
744 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
745 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
746 For a libc and libpthread that works well on Linux 2.4 kernels, we
747 recommend using the stable 2.3 branch.
749 * The new function open_wmemstream acts like open_memstream,
750 but uses a wchar_t wide character buffer.
752 * The new function ppoll is an improved version of poll, similar to pselect.
754 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
755 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
756 renameat, unlinkat, linkat, symlinkat, readlinkat.
758 * New Linux kernel system calls: unshare,
759 inotify_init, inotify_add_watch, inotify_rm_watch.
761 * The euidaccess function is now also known by the alias eaccess,
762 for compatibility with some other systems.
764 * Timezone data updated to 2006b version.
765 \f
766 Version 2.3.6
768 * The following bugs are resolved with this release:
770 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
771 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
772 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
773 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
774 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
775 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
777 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
779 * As of this release, GCC 4 can be used to compile the C Library.
781 * Timezone data updated to 2005m version.
782 \f
783 Version 2.3.5
785 * The following bugs are resolved with this release:
787 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
788 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
789 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
790 777, 787, 821, 822, 823, 825
792 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
793 \f
794 Version 2.3.4
796 * Support for RFC 3678. Real implementations exist only for Linux so far.
797 Implemented by Ulrich Drepper.
799 * nscd can now cache entries persistently. Expiring entries are reloaded.
800 For speedups the cache can be shared in memory with client processes.
801 Implemented by Ulrich Drepper.
803 * nscd can now perform SELinux checks.
804 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
806 * getaddrinfo queries are now cached. Canonical name lookup is performed
807 efficiently.
808 Implemented by Ulrich Drepper.
810 * The nothrow function attribute is used when headers are used by gcc when
811 compiling C code. This can avoid significant amounts of exception
812 handling data.
814 * The malloc functions perform more error checking and are stricter when
815 it comes to reacting on errors. The default action is to terminate
816 the process after showing an error message. Implemented by Ulrich Drepper.
818 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
819 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
821 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
822 namespaces using the new function dlmopen(). This feature is of course,
823 like most other dynamic loading functionality, not available in statically
824 linked applications. Implemented by Ulrich Drepper.
826 * Low-overhead boundary checking variants of string and some stdio functions
827 were added. These are to be used in conjunction with a gcc patch by
828 Jakub Jelinek which adds calls to these functions if possible.
829 Implemented by Jakub Jelinek and Ulrich Drepper.
831 * Old code for several operating systems and machine architectures that
832 have not been in working condition in a long time have been removed from
833 the main source tree maintained by the GNU C Library's maintainers.
834 These files are now reside in the separate `ports' source module
835 that is usable as an add-on when building the library.
836 \f
837 Version 2.3.3
839 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
840 interrogate the dynamic linker, compatible with the Solaris interface.
842 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
843 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
845 * getifaddrs now uses the netlink interface on Linux to get its information.
846 Implemented by Thorsten Kukuk.
848 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
849 Implemented by Ulrich Drepper.
851 * support for non-executable stacks on x86 has been added. Changes mostly
852 by Roland McGrath.
854 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
855 and Ulrich Drepper.
857 * getaddrinfo now performs destination address selection according to
858 RFC 3484.
859 \f
860 Version 2.3.2
862 * Thread-safe interfaces for many functions that access locale data
863 were added in version 2.3, but these features were omitted from NEWS.
864 Many functions have variants with an `_l' suffix that take a `locale_t'
865 object as a parameter rather than consulting the current locale.
866 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
867 create and maintain `locale_t' objects. Additionally, the new function
868 `uselocale' sets "the current locale" (as used by functions not so
869 parameterized) set for an individual thread. These features were added
870 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
872 * The functions getresuid, getresgid, setresuid, and setresgid, which
873 have long been available on Linux, are now declared in <unistd.h>
874 and are now also available on the Hurd.
876 * ELF thread-local storage support (TLS) now works on x86-64.
878 * The new dynamic string token $LIB is expanded in shared library names.
879 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
881 * Aldy Hernandez contributed complete software floating point support for
882 PowerPC machines with no FPU.
884 * fexecve is implemented on Linux.
886 * The `btowc' function should work at least twice as fast due to
887 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
889 * With approriate thread add-ons cancelable functions are now implemented
890 in libc.so as well. No need to call the function in libpthread. This
891 change allowed to finally disable the incorrect and expensive handling
892 of weak definition in ld.so.
894 * Yet more PLT entries in libc.so have been removed. We finally arrived
895 at the bare minimum. Startup times improved appropriately.
897 * Support for the new Linux/x86 system call interface was added. The
898 AT_SYSINFO auxiliary vector entry is recognized and handled.
899 \f
900 Version 2.3
902 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
903 charsets.
905 * iconv (the program and the interface) now accepts empty names (excluding
906 options like //TRANSLIT) to mean "use charset of current locale".
908 * localedef can now transliterate characters in strings which are not in
909 the provided charmap. The information from the input locale is used.
911 * Prelinking support was added for ELF targets. This requires additional
912 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
914 * Read-only stdio streams now use mmap to speed up operation by eliminating
915 copying and buffer underflows. To use add 'm' to the mode string of
916 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
918 * The malloc functions were completely rewritten by Wolfram Gloger based
919 on Doug Lea's malloc-2.7.0.c.
921 * Isamu Hasegawa contributed a completely new and POSIX-conformant
922 implementation of regex.
924 * Bruno Haible upgraded the iconv and locale implementation to support
925 Unicode 3.2.
927 * Contents of the LC_* and LANG environment variables in the CEN style are
928 not recognized anymore. It never was used. Change by Ulrich Drepper.
930 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
931 thread-local storage (TLS) ABI on some platforms.
932 Changes by Ulrich Drepper. SH support by Kaz Kojima.
934 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
935 EUC-JISX0213, and TSCII.
937 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
938 BSD-compatible interface for getting all network interface addresses.
939 Implementation for IPv4 by Roland McGrath.
941 * Loading of locale data is faster due to the introduction of a locale
942 archive. Implemented by Roland McGrath and Ulrich Drepper.
944 * Startup times are significantly reduced by not using exported functions
945 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
946 and Ulrich Drepper.
948 * Steven Munroe contributed a port to PowerPC64/Linux.
949 \f
950 Version 2.2.6
952 * The Hurd now uses the GNU libio implementation of stdio rather than the
953 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
955 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
956 with the same behavior as the Linux system call of the same name.
957 \f
958 Version 2.2.5
960 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
961 128-bit long double format.
963 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
964 IBM1161, and IBM1162 charsets.
966 * Andreas Jaeger contributed a port to x86-64/Linux.
968 * Peter Bruin contributed a port to PowerPC/Hurd.
970 * libc functions using I/O streams now can handle wide-oriented streams
971 as well.
973 * optimizations in the dynamic linker. Binaries created by recent binutils
974 versions start up quicker due to reduced time spent on relocations.
976 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
977 \f
978 Version 2.2.4
980 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
981 asinh, atanh, j0 for the 128-bit long double format.
983 * Bruno Haible updated all the code handling Unicode in some form to
984 support Unicode 3.1.
986 * Speed of regex for single-byte locales is back to previous levels.
987 Patch by Isamu Hasegawa.
989 * Alpha, SPARC, and IA-64 now also using floating stacks.
991 * Startup time of internationalized applications greatly improved through
992 iconv cache. Use iconvconfig to generate the cache file.
993 Contributed by Ulrich Drepper.
995 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
996 severe performance problems. Patch by David Mosberger.
998 * The Hurd port got a lot more functionality like AIO, various stdio
999 extensions, etc. Mainly done by Roland McGrath.
1001 * mtrace can now lookup symbols in shared libraries.
1002 \f
1003 Version 2.2.3
1005 * Intel's IA-64 math library is largely integrated. It provides fast and
1006 accurate implementatations for most basic and standard math functions
1007 in float, double, and long double format.
1009 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1010 and asin for the 96-bit long double format and asin, log, tan for the
1011 128-bit long double format.
1013 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1014 The basic double functions exist today. Contributed by Abraham Ziv
1015 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1016 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1018 * An asynchronous name lookup library was added. The interface is designed
1019 after POSIX AIO. The proposal was circulated beforehand to get comments.
1020 No negative ones came in. Implemented by Ulrich Drepper.
1022 * Port to S390/64bit contributed by Martin Schwidefsky
1023 <schwidefsky@de.ibm.com>.
1025 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1026 of functions for Linux/IA-64.
1028 * The RPC code is now thread safe. Threads can now use the same service
1029 of different services at the same time. Patch by Eric Norum
1030 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1032 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1033 family of functions for Linux/S390.
1035 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1036 of functions for Linux/x86.
1038 * Port to Linux/CRIS contributed by Axis Communications.
1039 \f
1040 Version 2.2.2
1042 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1043 we can now check for namespace violations and missing declarations. The
1044 result is that almost all headers are now Unix-compliant (as defined in
1045 the upcoming XPG6). The negative side is that some programs might need
1046 corrections, too, if they depend on the incorrect form of the headers in
1047 previous versions which defined too many symbols and included too many
1048 other headers.
1050 * regex now handles multibyte character sets correctly.
1051 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1053 * iconv (the program) does now conform to the upcoming XPG6 and handles
1054 charmaps. Instead of the charset names the path of charmaps can be
1055 provided and the conversion happens based on this data.
1056 Contributed by Ulrich Drepper.
1058 * The locale program now provides detailed information about the installed
1059 locales. While
1061 locale -a
1063 only lists the names of the supported locales
1065 locale -a --verbose
1067 provides details such as country, language, and codeset name.
1068 Contributed by Ulrich Drepper.
1069 \f
1070 Version 2.2.1
1072 * The gencat program now parses the input file according to the charset
1073 selected by the LC_CTYPE category. This is important for stateful
1074 character sets. To make generating catalogs easier there is a way
1075 to overwrite the charset selected by the locale: before the first
1076 message or $ quote line the catalog can contain a line like
1078 $ codeset=ISO-8859-2
1080 to select the charset (ISO-8859-2 in this case).
1082 Implemented by Shinya Hanataka and Ulrich Drepper.
1084 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1085 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1086 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1088 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1089 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1091 * The LANGUAGE environment variable is now ignored unless the locale is
1092 changed from the default "C" locale.
1094 * The usual bug fixes.
1095 \f
1096 Version 2.2
1098 * Greg McGary added runtime support for bounds checking using gcc's
1099 new -fbounded-pointers option. ix86 target is complete. PowerPC
1100 is in progress.
1102 * Thorsten Kukuk added secure mode support to nscd.
1104 * The Berkeley db libraries have been removed.
1106 Related, the nss_db module is now in a separate package since it
1107 obviously requires a database library being available.
1109 * Wide character I/O streams implemented by Ulrich Drepper.
1111 * Functions from the extended socket API added by Ulrich Drepper.
1113 * Functions feenableexcept and fedisableexcept to control the
1114 behaviour of individual exceptions have been added by Andreas Jaeger.
1116 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1118 * The resolver code has been updated from bind 8.2.3-T5B which supports
1119 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1120 and Mark Kettenis.
1122 This change could in some situations effect backward compatibility. Since
1123 now `_res' is a thread-local instead of a global variable, modifying it
1124 in one thread does not have any effect in other threads.
1126 The resolver library was also extended to allow IPv6 as the transport
1127 protocol for the requests. This work was done by Stig Venaas.
1129 * Compatibility code for K&R C compilers has been removed from the
1130 header files. A ISO C compiler is needed to use the library
1131 (conforming to either C89 or C99 standard).
1133 * Complete rewrite of the localedef program to support multibyte character
1134 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1135 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1136 Implemented by Ulrich Drepper.
1138 Bruno Haible significantly improved the generation and use of the data
1139 structures for the wide character tables.
1141 * Plural handling in gettext implemented by Ulrich Drepper.
1143 * The utmp daemon has been removed.
1145 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1147 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1148 and Yutaka Niibe.
1150 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1152 * POSIX barriers implemented by Kaz Kylheku.
1154 * POSIX spawn function family implemented by Ulrich Drepper.
1156 * POSIX spinlocks are now available.
1158 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1160 * the configure option --enable-kernel=X.Y.Z allows to strip out
1161 compatibility for kernel versions before X.Y.Z. This is currently only
1162 implemented for Linux.
1164 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1165 field sin6_scope_id. This means that all programs using IPv6 should be
1166 recompiled. Don't expect binary compatibility with previous glibc
1167 versions.
1169 * various conversion modules for IBM character sets contributed by
1170 Masahide Washizawa.
1172 * IA-64 port by Jes Sorensen and HJ Lu.
1173 \f
1174 Version 2.1.3
1176 * bug fixes
1178 \f
1179 Version 2.1.2
1181 * bug fixes
1183 \f
1184 Version 2.1.1
1186 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1188 * New xdr functions are added; some rpc functions are now 64bit clean.
1190 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1192 * Fixed known incompatibilities with glibc 2.0.
1194 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1196 * Optimized a number of functions (especially the ELF dynamic loader).
1198 * Update timezone data files.
1200 * lots of charmaps corrections
1202 * some new locale definitions and charmaps
1204 \f
1205 Version 2.1
1207 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1208 conform to POSIX member type requirements. Symbol versions have been
1209 adjusted as needed within the library, and for direct use by applications,
1210 but there is potential for problems if third-party libraries use
1211 struct timeval as part of their interface. This does not present
1212 a problem for X and other "essential" system libraries.
1214 * An additional locale model to support C++ Standard Library locale
1215 model and probably more was implemented by Ulrich Drepper.
1217 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1218 symbol level.
1220 * Miles Bader provided the `argp' function family to support hierachical
1221 command line argument parsing, layered on top of getopt.
1223 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1225 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1226 numbers.
1228 * scanf recognizes the %a and %A format for scanning floating point numbers.
1230 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1231 information and interfaces for the available integer types.
1233 * about 130 new math functions were added to implement the ISO C9x math
1234 library.
1236 * the new header <complex.h> contains definitions of the complex math
1237 functions from ISO C 9X.
1239 * the new header <tgmath.h> defines generic macros to use complex or
1240 real valued functions.
1242 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1244 * Andreas Jaeger provided a test suite for the math library.
1246 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1248 * Ulrich Drepper added character set conversion functions (iconv).
1250 * Optimized string functions have been added.
1252 * The localedata addon is now part of glibc.
1254 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1256 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1257 daemon for NSS (nscd).
1259 Missing a better place here are some numbers on improvements. Under
1260 Linux 2.1.125 un-tar-ing the kernel sources takes
1262 user system wall
1264 using local files 12.19s 6.88s 22.91s
1266 using NIS 13.92s 8.91s 26.34s
1268 using NIS & nscd 10.37s 7.34s 25.30s
1270 using NIS+ 27.57s 30.37s 640.46s
1272 using NIS+ & nscd 10.25s 7.83s 26.51s
1274 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1276 Keep in mind that non-namelookup related operations dominate above times.
1277 It was just a common complain that using NIS+ unpacking the kernel is
1278 horribly slow.
1280 [1] The old nscd implementation is not available anymore since it was
1281 distributed with glibc up to version 2.0.98 and thus is now replaced.
1283 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1285 * Mark Kettenis provided a Hesiod NSS module.
1287 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1288 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1290 * rcmd can now handle netgroups (Dick Streefland).
1292 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1293 Bambrough.
1295 * Support for the IPv6 protocol has been added to the socket API, as per the
1296 latest draft standards.
1298 * Support for Linux 2.2 has been added.
1300 * Interface changes relative to the latest 2.0.x release:
1301 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1302 addseverity NEW: Unix98
1303 alphasort64 NEW: LFS
1304 argp_err_exit_status NEW: argp, GNU ext
1305 argp_error NEW: argp, GNU ext
1306 argp_failure NEW: argp, GNU ext
1307 argp_help NEW: argp, GNU ext
1308 argp_parse NEW: argp, GNU ext
1309 argp_program_bug_address NEW: argp, GNU ext
1310 argp_program_version NEW: argp, GNU ext
1311 argp_program_version_hook NEW: argp, GNU ext
1312 argp_state_help NEW: argp, GNU ext
1313 argp_usage NEW: argp, GNU ext
1314 authdes_create NEW: Secure RPC
1315 authdes_getucred NEW: Secure RPC
1316 authdes_pk_create NEW: Secure RPC
1317 backtrace NEW: GNU ext.
1318 backtrace_symbols NEW: GNU ext.
1319 backtrace_symbols_fd NEW: GNU ext.
1320 cacos NEW: ISO C 9x
1321 cacosf NEW: ISO C 9x
1322 cacosh NEW: ISO C 9x
1323 cacoshf NEW: ISO C 9x
1324 cacoshl NEW: ISO C 9x
1325 cacosl NEW: ISO C 9x
1326 capget NEW: kernel
1327 capset NEW: kernel
1328 carg NEW: ISO C 9x
1329 cargf NEW: ISO C 9x
1330 cargl NEW: ISO C 9x
1331 casin NEW: ISO C 9x
1332 casinf NEW: ISO C 9x
1333 casinh NEW: ISO C 9x
1334 casinhf NEW: ISO C 9x
1335 casinhl NEW: ISO C 9x
1336 casinl NEW: ISO C 9x
1337 catan NEW: ISO C 9x
1338 catanf NEW: ISO C 9x
1339 catanh NEW: ISO C 9x
1340 catanhf NEW: ISO C 9x
1341 catanhl NEW: ISO C 9x
1342 catanl NEW: ISO C 9x
1343 cbc_crypt NEW: Secure RPC
1344 ccos NEW: ISO C 9x
1345 ccosf NEW: ISO C 9x
1346 ccosh NEW: ISO C 9x
1347 ccoshf NEW: ISO C 9x
1348 ccoshl NEW: ISO C 9x
1349 ccosl NEW: ISO C 9x
1350 cexp NEW: ISO C 9x
1351 cexpf NEW: ISO C 9x
1352 cexpl NEW: ISO C 9x
1353 cimag NEW: ISO C 9x
1354 cimagf NEW: ISO C 9x
1355 cimagl NEW: ISO C 9x
1356 clearerr_locked REMOVED
1357 clntunix_create NEW: sunrpc ext
1358 clog NEW: ISO C 9x
1359 clog10 NEW: ISO C 9x
1360 clog10f NEW: ISO C 9x
1361 clog10l NEW: ISO C 9x
1362 clogf NEW: ISO C 9x
1363 clogl NEW: ISO C 9x
1364 conj NEW: ISO C 9x
1365 conjf NEW: ISO C 9x
1366 conjl NEW: ISO C 9x
1367 cpow NEW: ISO C 9x
1368 cpowf NEW: ISO C 9x
1369 cpowl NEW: ISO C 9x
1370 cproj NEW: ISO C 9x
1371 cprojf NEW: ISO C 9x
1372 cprojl NEW: ISO C 9x
1373 creal NEW: ISO C 9x
1374 crealf NEW: ISO C 9x
1375 creall NEW: ISO C 9x
1376 creat64 NEW: LFS
1377 csin NEW: ISO C 9x
1378 csinf NEW: ISO C 9x
1379 csinh NEW: ISO C 9x
1380 csinhf NEW: ISO C 9x
1381 csinhl NEW: ISO C 9x
1382 csinl NEW: ISO C 9x
1383 csqrt NEW: ISO C 9x
1384 csqrtf NEW: ISO C 9x
1385 csqrtl NEW: ISO C 9x
1386 ctan NEW: ISO C 9x
1387 ctanf NEW: ISO C 9x
1388 ctanh NEW: ISO C 9x
1389 ctanhf NEW: ISO C 9x
1390 ctanhl NEW: ISO C 9x
1391 ctanl NEW: ISO C 9x
1392 des_setparity NEW: Secure RPC
1393 ecb_crypt NEW: Secure RPC
1394 endutxent NEW: Unix98
1395 exp10 NEW: ISO C 9x
1396 exp10f NEW: ISO C 9x
1397 exp10l NEW: ISO C 9x
1398 exp2 NEW: ISO C 9x
1399 exp2f NEW: ISO C 9x
1400 exp2l NEW: ISO C 9x
1401 fattach NEW: STREAMS
1402 fdetach NEW: STREAMS
1403 fdim NEW: ISO C 9x
1404 fdimf NEW: ISO C 9x
1405 fdiml NEW: ISO C 9x
1406 feclearexcept NEW: ISO C 9x
1407 fegetenv NEW: ISO C 9x
1408 fegetexceptflag NEW: ISO C 9x
1409 fegetround NEW: ISO C 9x
1410 feholdexcept NEW: ISO C 9x
1411 feof_locked REMOVED
1412 feraiseexcept NEW: ISO C 9x
1413 ferror_locked REMOVED
1414 fesetenv NEW: ISO C 9x
1415 fesetexceptflag NEW: ISO C 9x
1416 fesetround NEW: ISO C 9x
1417 fetestexcept NEW: ISO C 9x
1418 feupdateenv NEW: ISO C 9x
1419 fflush_locked REMOVED
1420 ffsl NEW: GNU ext.
1421 ffsll NEW: GNU ext.
1422 fgetpos64 NEW: LFS
1423 fgets_unlocked NEW: GNU ext.
1424 fileno_locked REMOVED
1425 fma NEW: ISO C 9x
1426 fmaf NEW: ISO C 9x
1427 fmal NEW: ISO C 9x
1428 fmax NEW: ISO C 9x
1429 fmaxf NEW: ISO C 9x
1430 fmaxl NEW: ISO C 9x
1431 fmin NEW: ISO C 9x
1432 fminf NEW: ISO C 9x
1433 fminl NEW: ISO C 9x
1434 fmtmsg NEW: Unix98
1435 fopen64 NEW: LFS
1436 fputc_locked REMOVED
1437 fputs_unlocked NEW: GNU ext.
1438 fread_unlocked NEW: GNU ext.
1439 freopen64 NEW: LFS
1440 fseeko NEW: Unix98
1441 fsetpos64 NEW: LFS
1442 fstatfs64 NEW: LFS
1443 fstatvfs NEW: Unix98
1444 fstatvfs64 NEW: LFS
1445 ftello NEW: Unix98
1446 ftello64 NEW: LFS
1447 ftruncate64 NEW: LFS
1448 ftw64 NEW: LFS
1449 fwrite_unlocked NEW: GNU ext.
1450 gai_strerror NEW: IPv6
1451 gamma_r REMOVED
1452 gammaf_r REMOVED
1453 gammal_r REMOVED
1454 getchar_locked REMOVED
1455 getdate NEW: Unix98
1456 getdate_err NEW: Unix98
1457 getdate_r NEW: GNU ext.
1458 getmsg NEW: STREAMS
1459 getnameinfo NEW: IPv6
1460 getnetname NEW: Secure RPC
1461 getpmsg NEW: STREAMS
1462 getpt NEW: Unix98 PTY
1463 getrlimit64 NEW: LFS
1464 getutxent NEW: Unix98
1465 getutxid NEW: Unix98
1466 getutxline NEW: Unix98
1467 glob64 NEW: GNU ext.
1468 globfree64 NEW: GNU ext.
1469 gnu_get_libc_release NEW: GNU ext.
1470 gnu_get_libc_version NEW: GNU ext.
1471 grantpt NEW: Unix98 PTY
1472 host2netname NEW: Secure RPC
1473 iconv NEW: iconv
1474 iconv_close NEW: iconv
1475 iconv_open NEW: iconv
1476 if_freenameindex NEW: IPv6
1477 if_indextoname NEW: IPv6
1478 if_nameindex NEW: IPv6
1479 if_nametoindex NEW: IPv6
1480 in6addr_any NEW: IPv6
1481 in6addr_loopback NEW: IPv6
1482 inet6_isipv4mapped NEW: IPv6
1483 isastream NEW: STREAMS
1484 iswblank NEW: GNU ext.
1485 key_decryptsession NEW: Secure RPC
1486 key_decryptsession_pk NEW: Secure RPC
1487 key_encryptsession NEW: Secure RPC
1488 key_encryptsession_pk NEW: Secure RPC
1489 key_gendes NEW: Secure RPC
1490 key_get_conv NEW: Secure RPC
1491 key_secretkey_is_set NEW: Secure RPC
1492 key_setnet NEW: Secure RPC
1493 key_setsecret NEW: Secure RPC
1494 llrint NEW: ISO C 9x
1495 llrintf NEW: ISO C 9x
1496 llrintl NEW: ISO C 9x
1497 llround NEW: ISO C 9x
1498 llroundf NEW: ISO C 9x
1499 llroundl NEW: ISO C 9x
1500 log2 NEW: ISO C 9x
1501 log2f NEW: ISO C 9x
1502 log2l NEW: ISO C 9x
1503 lrint NEW: ISO C 9x
1504 lrintf NEW: ISO C 9x
1505 lrintl NEW: ISO C 9x
1506 lround NEW: ISO C 9x
1507 lroundf NEW: ISO C 9x
1508 lroundl NEW: ISO C 9x
1509 lseek64 NEW: LFS
1510 makecontext NEW: Unix98
1511 mempcpy NEW: GNU ext.
1512 mmap64 NEW: LFS
1513 moncontrol REMOVED
1514 modify_ldt NEW: kernel
1515 nan NEW: ISO C 9x
1516 nanf NEW: ISO C 9x
1517 nanl NEW: ISO C 9x
1518 nearbyint NEW: ISO C 9x
1519 nearbyintf NEW: ISO C 9x
1520 nearbyintl NEW: ISO C 9x
1521 netname2host NEW: Secure RPC
1522 netname2user NEW: Secure RPC
1523 nexttoward NEW: ISO C 9x
1524 nexttowardf NEW: ISO C 9x
1525 nexttowardl NEW: ISO C 9x
1526 nftw NEW: Unix98
1527 nftw64 NEW: LFS
1528 open64 NEW: LFS
1529 passwd2des NEW: Secure RPC
1530 pow10 NEW: GNU ext.
1531 pow10f NEW: GNU ext.
1532 pow10l NEW: GNU ext.
1533 pread NEW: Unix98
1534 pread64 NEW: LFS
1535 printf_size NEW: GNU ext.
1536 printf_size_info NEW: GNU ext.
1537 profil_counter REMOVED
1538 pthread_mutexattr_getkind_np REPLACED
1539 pthread_mutexattr_setkind_np REPLACED
1540 ptsname NEW: Unix98 PTY
1541 ptsname_r NEW: Unix98 PTY
1542 putc_locked REMOVED
1543 putchar_locked REMOVED
1544 putgrent NEW: GNU ext.
1545 putmsg NEW: STREAMS
1546 putpmsg NEW: STREAMS
1547 pututxline NEW: Unix98
1548 pwrite NEW: Unix98
1549 pwrite64 NEW: LFS
1550 readdir64 NEW: LFS
1551 readdir64_r NEW: LFS
1552 remquo NEW: ISO C 9x
1553 remquof NEW: ISO C 9x
1554 remquol NEW: ISO C 9x
1555 round NEW: ISO C 9x
1556 roundf NEW: ISO C 9x
1557 roundl NEW: ISO C 9x
1558 rtime NEW: GNU ext.
1559 scalbln NEW: ISO C 9x
1560 scalblnf NEW: ISO C 9x
1561 scalblnl NEW: ISO C 9x
1562 scandir64 NEW: LFS
1563 sendfile NEW: kernel
1564 setcontext NEW: Unix98
1565 setrlimit64 NEW: LFS
1566 setutxent NEW: Unix98
1567 sighold NEW: Unix98
1568 sigignore NEW: Unix98
1569 sigqueue NEW: POSIX.1b
1570 sigrelse NEW: Unix98
1571 sigset NEW: POSIX.1b
1572 sigtimedwait NEW: POSIX.1b
1573 sigwaitinfo NEW: POSIX.1b
1574 sincos NEW: GNU ext.
1575 sincosf NEW: GNU ext.
1576 sincosl NEW: GNU ext.
1577 statfs64 NEW: LFS
1578 statvfs NEW: Unix98
1579 statvfs64 NEW: LFS
1580 strcasestr NEW: GNU ext.
1581 strtoimax NEW: ISO C 9x
1582 strtoumax NEW: ISO C 9x
1583 strverscmp NEW: GNU ext.
1584 svcauthdes_stats NEW: Secure RPC
1585 svcunix_create NEW: sunrpc etx
1586 svcunixfd_create NEW: sunrpc ext
1587 swapcontext NEW: Unix98
1588 tcgetsid NEW: Unix98 PTY
1589 tdestroy NEW: GNU ext.
1590 tgamma NEW: ISO C 9x
1591 tgammaf NEW: ISO C 9x
1592 tgammal NEW: ISO C 9x
1593 tmpfile64 NEW: LFS
1594 trunc NEW: ISO C 9x
1595 truncate64 NEW: LFS
1596 truncf NEW: ISO C 9x
1597 truncl NEW: ISO C 9x
1598 umount2 NEW: kernel
1599 unlockpt NEW: Unix98 PTY
1600 updwtmpx NEW: Unix98
1601 user2netname NEW: Secure RPC
1602 utmpxname NEW: Unix98
1603 versionsort NEW: GNU ext.
1604 versionsort64 NEW: GNU ext.
1605 waitid NEW: Unix98
1606 wcscasecmp NEW: GNU ext.
1607 wcsncasecmp NEW: GNU ext.
1608 wcsnlen NEW: GNU ext.
1609 wcstoimax NEW: ISO C 9x
1610 wcstoll NEW: ISO C 9x
1611 wcstoull NEW: ISO C 9x
1612 wcstoumax NEW: ISO C 9x
1613 wcswcs NEW: Unix98
1614 wordexp NEW: POSIX.2
1615 wordfree NEW: POSIX.2
1616 write_profiling REMOVED
1617 xdecrypt NEW: Secure RPC
1618 xdr_authdes_cred NEW: Secure RPC
1619 xdr_authdes_verf NEW: Secure RPC
1620 xdr_cryptkeyarg NEW: Secure RPC
1621 xdr_cryptkeyarg2 NEW: Secure RPC
1622 xdr_cryptkeyres NEW: Secure RPC
1623 xdr_getcredres NEW: Secure RPC
1624 xdr_key_netstarg NEW: Secure RPC
1625 xdr_key_netstres NEW: Secure RPC
1626 xdr_keybuf NEW: Secure RPC
1627 xdr_keystatus NEW: Secure RPC
1628 xdr_netnamestr NEW: Secure RPC
1629 xdr_sizeof NEW: Secure RPC
1630 xdr_unixcred NEW: sunrpc ext
1631 xencrypt NEW: Secure RPC
1632 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1633 \f
1634 Version 2.0.6
1636 * more bug fixes
1638 \f
1639 Version 2.0.5
1641 * more bug fixes
1643 * inet_ntoa is thread-safe
1645 * updwtmp is moved from libutil to libc
1647 * rewrite of cbrt function
1649 * update of timezone data
1650 \f
1651 Version 2.0.4
1653 * more bug fixes
1654 \f
1655 Version 2.0.3
1657 * more bug fixes
1658 \f
1659 Version 2.0.2
1661 * more bug fixes
1663 * add atoll function
1665 * fix complex problems in Berkeley DB code
1667 * fix math functions
1668 \f
1669 Version 2.0.1
1671 * fixed lots of header problems (especially Linux/GNU specific)
1673 * dynamic loader preserves all registers
1675 * Roland McGrath provided support for handling of auxiliary objects in
1676 the ELF dynamic loader.
1678 * support for parallel builds is improved
1679 \f
1680 Version 2.0
1682 * GNU extensions are no longer declared by default. To enable them you
1683 must define the macro `_GNU_SOURCE' in your program or compile with
1684 `-D_GNU_SOURCE'.
1686 * The library has changed from using GNU ld symbol aliases to using weak
1687 symbols where available. The ELF object file format supports weak
1688 symbols; GNU ld also supports weak symbols in the a.out format. (There
1689 is also now support for other GNU ld extensions in ELF. Use the
1690 `--with-elf' option to configure to indicate you have ELF, and
1691 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1692 of many files which contained only symbol aliases, reducing the size of
1693 the source and the compiled library; many other files were renamed to
1694 less cryptic names previously occupied by the symbol alias files.
1695 There is a new header file <elf.h> for programs which operate on
1696 files in the ELF format.
1698 * Converted to Autoconf version 2, so `configure' has more options.
1699 Run `configure --help' to see the details.
1701 * The library can now be configured to build profiling, highly-optimized
1702 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1703 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1704 `configure' enable building these extra libraries. The shared library is
1705 built by default when using both ELF and GNU ld. When shared libraries
1706 are enabled, the new library `-ldl' is available for arbitrary run-time
1707 loading of shared objects; its interface is defined in <dlfcn.h>. The
1708 new header file <link.h> gives access to the internals of the run-time
1709 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1710 application of same name on other systems and it provides information
1711 about dynamically linked binaries.
1713 * The C library now provides the run-time support code for profiling
1714 executables compiled with `-pg'. Programs can control the profiling code
1715 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1716 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1717 the support for this file format was contributed by David Mosberger-Tang.
1719 * The math code has been replaced with a math library based on fdlibm from
1720 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1721 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1722 functions. The math functions now reside in a separate library, so
1723 programs using them will need to use `-lm' their linking commands.
1725 * John C. Bowman contributed optimized ix87 assembler inline functions.
1727 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1728 mechanism similar to that found in Solaris 2. This is now used for the
1729 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1730 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1731 file controls what services are used for each individual database. This
1732 works by loading shared libraries with names specified in `nsswitch.conf',
1733 so service modules can be changed or added at any time without even
1734 relinking any program. Currently there are the file, db, and NIS based
1735 NSS services available.
1737 * The new functions `strtoq' and `strtouq' parse integer values from
1738 strings, like `strtol' and `strtoul', but they return `long long int' and
1739 `unsigned long long int' values, respectively (64-bit quantities).
1741 * The new functions `strtof' and `strtold' parse floating-point values from
1742 strings, like `strtod', but they return `float' and `long double' values,
1743 respectively (on some machines `double' and `long double' are the same).
1745 * Ulrich Drepper has contributed new implementations of the floating-point
1746 printing and reading code used in the `printf' family of functions and
1747 `strtod', `strtof', and `strtold'. These new functions are perfectly
1748 accurate, and much faster than the old ones.
1750 * The implementation of the POSIX locale model was completely rewritten by
1751 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1752 to compile the POSIX locale definition.
1754 * The former dummy implementations of the strcoll and strxfrm function are
1755 now replaced by fully functional code contributed by Ulrich Drepper. The
1756 collation information comes from the POSIX locale definitions.
1758 * The new header <langinfo.h> defines an interface for accessing
1759 various locale-dependent data (using the locale chosen with `setlocale').
1761 * Ulrich Drepper has contributed a new suite of functions for operation on
1762 wide-character and multibyte-character strings, in <wchar.h>;
1763 and classification and case conversion of wide characters, in <wctype.h>.
1764 These new functions are conforming to the ISO C, Amendement 1 specification.
1766 * There is now a second implementation of the standard I/O library available.
1767 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1768 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1770 * You can now use positional parameter specifications in format strings
1771 for the `printf' and `scanf' families of functions. For example,
1772 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1773 ``Number 6, Mr Jones''. This is mainly useful when providing different
1774 format strings for different languages, whose grammars may dictate
1775 different orderings of the values being printed. To support this
1776 feature, the interface for `register_printf_handler' has changed; see
1777 the header file <printf.h> for details.
1779 * The `printf' and `scanf' families of functions now understand a new
1780 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1781 to group numbers as indicated by the locale; for `scanf' and friends, this
1782 says to accept as valid only a number with all the proper grouping
1783 separators in the right places. In the default "C" locale, numbers are
1784 not grouped; but locales for specific countries will define the usual
1785 conventions (i.e. separate thousands with `,' in the US locale).
1787 * The pgrp functions have been regularized, slightly incompatibly but much
1788 less confusingly. The core functions are now `getpgid' and `setpgid',
1789 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1790 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1791 provided for compatibility. There is no longer an incompatible `getpgrp'
1792 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1794 * The new header file <fts.h> and suite of functions simplify programs that
1795 operate on directory trees. This code comes from 4.4 BSD.
1797 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1798 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1799 NSS scheme used in glibc.
1801 * There is a new malloc debugging hook `__memalign_hook'.
1803 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1804 `unsigned int' in <sys/types.h>. These are for compatibility only and
1805 their use is discouraged.
1807 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1808 done differently, so that it works even without GNU ld.
1810 * New function `euidaccess' checks allowed access to a file like `access',
1811 but using the effective IDs instead of the real IDs.
1813 * The time zone data files have been updated for the latest and greatest
1814 local time conventions of the countries of the world.
1816 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1817 see <dirent.h>.
1819 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1820 for formatting floating-point numbers. They are provided only for
1821 compatibility; new programs should use `sprintf' instead. There are
1822 also equivalent function for the `long double' floating-point type and
1823 all functions also exist in a reentrant form.
1825 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1826 functions for maintaining the login-record files (primarily of use to
1827 system programs such as `login'), and convenient functions for
1828 allocating and initializing a pseudo-terminal (pty) device.
1830 * Ulrich Drepper has contributed new support for System V style
1831 shared memory and IPC on systems that support it.
1833 * Ulrich Drepper has contributed several miscellaneous new functions found
1834 in System V: The `hsearch' family of functions provide an effective
1835 implementation of hash tables; `a64l' and `l64a' provide a very simple
1836 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1837 number generator.
1839 * Ulrich Drepper has contributed new reentrant counterparts for the
1840 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1842 * Ulrich Drepper has contributed new, highly-optimized versions of several
1843 string functions for the i486/Pentium family of processors.
1845 * Ulrich Drepper has updated the Linux-specific code, based largely
1846 on work done in Hongjiu Lu's version of GNU libc for Linux.
1847 The GNU library now supports Linux versions 2.0.10 and later,
1848 using the ELF object file format (i[3456]86-*-linux).
1850 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1852 * David Mosberger-Tang and Richard Henderson have ported the C library
1853 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1854 dynamic linking support for ELF/Alpha.
1856 * Richard Henderson contributed several Alpha optimized assembler function
1857 for arithmetic and string handling.
1859 * Ulrich Drepper has contributed a new set of message catalog functions to
1860 support multiple languages using the <libintl.h> interface, for use with
1861 his new package GNU gettext. Translation volunteers have contributed
1862 catalogs of the library's messages in Spanish, German, and Korean.
1864 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1865 program and the `catgets' function for reading the catalog files it
1866 creates. (The <libintl.h> interface is preferred; we include the
1867 <nl_types.h> interface using `catgets' only for source compatibility with
1868 programs already written to use it.)
1870 * New header file <values.h> gives SVID-compatible names for <limits.h>
1871 constants.
1873 * Various new macros, declarations, and small header files for compatibility
1874 with 4.4 BSD.
1876 * New function `group_member' is a convenient way to check if a process has
1877 a given effective group ID.
1879 * When using GCC 2.7 and later, the socket functions are now declared in a
1880 special way so that passing an argument of type `struct sockaddr_in *',
1881 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1882 `struct sockaddr *' type, does not generate a type-clash warning.
1884 * New function `error' declared in header file <error.h> is a convenient
1885 function for printing error messages and optionally exiting; this is the
1886 canonical function used in GNU programs. The new functions `err', `warn',
1887 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1888 doing the same thing.
1890 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1891 POSIX.2 `glob' function to do ~ and {...} expansion.
1893 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1894 `clearenv' which is used in POSIX.9 is also available.
1896 * New function `getsid' returns session ID number on systems that support it.
1898 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1899 files <db.h> and <mpool.h> provide a rich set of functions for several
1900 types of simple databases stored in memory and in files, and <ndbm.h> is
1901 an old `ndbm'-compatible interface using the `db' functions. Link with
1902 `-ldb' to get these functions.
1904 * New macro `strdupa' copies a string like `strdup', but uses local stack
1905 space from `alloca' instead of dynamic heap space from `malloc'.
1907 * New function `strnlen' is like `strlen' but searches only a given maximum
1908 number of characters for the null terminator. `stpncpy', `strndup' and
1909 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1910 function.
1912 * New function `statfs' in header <sys/statfs.h>.
1914 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1915 provide convenient functions for operating on blocks of null-terminated
1916 strings.
1918 * A new suite of functions in <utmp.h> handle all the details of reading
1919 and writing the utmp file.
1921 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1922 Thorsten Kukuk.
1924 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1925 completely POSIX compliant and also implemented the extended functionality
1926 to handle alternate digit representation and alternate era date formats.
1928 * Ulrich Drepper provided an implementation of the `strptime' function
1929 defined in XPG4.2 which transforms a string into a `struct tm' value.
1931 * Paul Eggert provided the tzselect shell script as part of the timezone
1932 code. The shell script makes it easy to select the correct timezone
1933 specification.
1935 * The implementation of the malloc family of functions is completely replaced
1936 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1937 The implementation uses the mmap function (if available) and it is
1938 optimized for the use in multi threaded programs.
1940 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1941 functions. This new functionality is usable by specifying a special
1942 salt string and it is compatible with implementation on *BSD systems.
1944 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1945 `getsubopt' to handle second level command line options, `bsd_signal'
1946 to access BSD style `signal' functionality, the obsolete `regexp' style
1947 expression matcher.
1949 * the `lchown' function is available on system which support this
1950 functionality.
1952 * The implementation of the shadow password handling function was contributed
1953 by Ulrich Drepper.
1955 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1957 * POSIX.1g support was added. The <sys/select.h> header is available,
1958 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1959 implementation of `getaddrinfo'.
1960 \f
1961 Version 1.09
1963 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1965 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1966 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1968 * The new function `daemon' from 4.4 BSD is useful for server programs that
1969 want to put themselves in the background.
1971 * Joel Sherrill has contributed support for several standalone boards that
1972 run without an operating system.
1974 * `printf', `scanf' and friends now accept a `q' type modifier for long
1975 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1977 * All of the code taken from BSD (notably most of the math and networking
1978 routines) has been updated from the BSD 4.4-Lite release.
1980 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1982 * The new functions `getdomainname' and `setdomainname' fetch or change the
1983 YP/NIS domain name. These are system calls which exist on systems which
1984 have YP (aka NIS).
1986 * The time zone data files have been updated for the latest international
1987 conventions.
1989 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1990 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1991 \f
1992 Version 1.08
1994 * The C library now includes support for Sun RPC, from Sun's free
1995 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1996 are included. (There is still no support for YP.)
1998 * Tom Quinn has contributed a port of the C library to SGI machines running
1999 Irix 4 (mips-sgi-irix4).
2001 * The new `lockf' function is a simplified interface to the locking
2002 facilities of `fcntl', included for compatibility.
2004 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2006 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2008 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2009 compatibility.
2011 * The error message printed by `assert' for a failed assertion now includes
2012 the name of the program (if using GNU ld) and the name of the calling
2013 function (with versions of GCC that support this).
2015 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2017 * The library now includes the <sys/mman.h> header file and memory
2018 management functions `mmap', `munmap', `mprotect', `msync', and
2019 `madvise', on systems that support those facilities.
2021 * The interface for `mcheck' has changed slightly: the function called to
2022 abort the program when an allocation inconsistency is detected now takes
2023 an argument that indicates the type of failure. The new function
2024 `mprobe' lets you request a consistency check for a particular block at
2025 any time (checks are normally done only when you call `free' or `realloc'
2026 on a block).
2028 * It is now possible to easily cross-compile the C library, building on one
2029 system a library to run on another machine and/or operating system. All
2030 you need to do is set the variable `HOST_CC' in `configparms' to the
2031 native compiler for programs to run on the machine you are building on (a
2032 few generator programs are used on Unix systems); set `CC' to the
2033 cross-compiler.
2035 * The new function `fexecve' (only implemented on the GNU system) executes
2036 a program file given a file descriptor already open on the file.
2037 \f
2038 Version 1.07
2040 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2041 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2043 * You can set the variable `libprefix' in `configparms' to specify a prefix
2044 to be prepended to installed library files; this makes it easy to install
2045 the GNU C library to be linked as `-lgnuc' or whatever.
2047 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2048 copies a limited number of characters from a string, and returns the
2049 address of the last character written.
2051 * You no longer need to check for whether the installed `stddef.h' is
2052 compatible with the GNU C library. configure now checks for you.
2054 * You can now define a per-stream `fileno' function to convert the
2055 stream's cookie into an integral file descriptor.
2057 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2058 allocates zero bytes of storage, and returns a unique pointer which
2059 you can pass to `realloc' or `free'. The behavior is undefined if
2060 you dereference this pointer.
2062 * The C library now runs on Sony NEWS m68k machines running either
2063 NewsOS 3 or NewsOS 4.
2065 * The new `syscall' function is a system-dependent primitive function
2066 for invoking system calls. It has the canonical behavior on Unix
2067 systems, including unreliable return values for some calls (such as
2068 `pipe', `fork' and `getppid').
2070 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2071 to `EAGAIN', which is the preferred name. On systems whose kernels
2072 use two distinct codes, the C library now translates EWOULDBLOCK to
2073 EAGAIN in every system call function.
2074 \f
2075 Version 1.06
2077 * The GNU C Library Reference Manual is now distributed with the library.
2078 `make dvi' will produce a DVI file of the printed manual.
2079 `make info' will produce Info files that you can read on line using C-h i
2080 in Emacs or the `info' program.
2081 Please send comments on the manual to bug-glibc-manual@gnu.org.
2083 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2085 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2087 * Jason Merrill has contributed a port to the Sequent Symmetry running
2088 Dynix version 3 (i386-sequent-dynix).
2090 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2091 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2093 * New function `memory_warnings' lets you arrange to get warnings when
2094 malloc is running out of memory to allocate, like Emacs gives you.
2096 * The C library now contains the relocating allocator used in Emacs 19 for
2097 its editing buffers. This allocator (ralloc) minimizes allocation
2098 overhead and fragmentation by moving allocated regions around whenever it
2099 needs to. You always refer to a ralloc'd region with a "handle" (a
2100 pointer to a pointer--an object of type `void **').
2102 * There is a new `printf' format: `%m' gives you the string corresponding
2103 to the error code in `errno'.
2105 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2106 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2107 pass, the `a' modifier says to fill in a `char **' you pass with a
2108 malloc'd string.
2110 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2111 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2112 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2114 * `mkstemp' is a traditional Unix function to atomically create and open a
2115 uniquely-named temporary file.
2116 \f
2117 Version 1.05
2119 * The standard location for the file that says what the local timezone is
2120 has changed again. It is now `/usr/local/etc/localtime' (or more
2121 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2123 * The distribution no longer contains any files with names longer than 14
2124 characters.
2126 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2127 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2129 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2130 \f
2131 Version 1.04
2133 * The configuration process has changed quite a bit. The `configure'
2134 script is now used just like the configuration scripts for other GNU
2135 packages. The `sysdeps' directory hierarchy is much rearranged.
2136 The file `INSTALL' explains the new scheme in detail.
2138 * The header files no longer need to be processed into ANSI C and
2139 traditional C versions. There is just one set of files to install, and
2140 it will work with ANSI or old C compilers (including `gcc -traditional').
2142 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2143 MIPS DECStation running Ultrix 4.
2145 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2146 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2147 made itself into a shared library.
2149 * Yet further improved support for the i386, running 4.3 BSD-like systems
2150 (such as Mach 3 with the Unix single-server), or System V.
2152 * New function `strncasecmp' to do case-insensitive string comparison
2153 with limited length.
2155 * New function `strsep' is a reentrant alternative to `strtok'.
2157 * New functions `scandir' and `alphasort' for searching directories.
2159 * New function `setenv' is a better interface to `putenv'.
2161 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2162 function for traversing a directory tree.
2164 * The GNU obstack package is now also part of the C library.
2165 The new function `open_obstack_stream' creates a stdio stream that
2166 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2167 formatted output directly to an obstack.
2169 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2170 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2172 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2174 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2175 things to your strings.
2177 * There are some new test programs: test-fseek, testmb, and testrand.
2179 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2180 These ports are not finished, but are a good starting place for really
2181 supporting those systems.
2183 * `/etc/localtime' is now the standard location for the file that says what
2184 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2185 This follows the general principle that `/etc' is the place for all local
2186 configuration files.
2188 * The C library header files now use `extern "C"' when used by the C++
2189 compiler, so the C library should now work with C++ code.
2191 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2192 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2193 in <strings.h>.)
2195 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2196 function which uses the `merge sort' algorithm, and is said to be
2197 significantly faster than the old GNU `qsort' function. Merge sort is
2198 now the standard `qsort' function. The new algorithm can require a lot
2199 of temporary storage; so, the old sorting function is called when the
2200 required storage is not available.
2202 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2203 provides the Unix `crypt' function, plus some other entry points.
2205 * The code and header files taken from 4.4 BSD have been updated with the
2206 latest files released from Berkeley.
2207 \f
2208 ----------------------------------------------------------------------
2209 Copyright information:
2211 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2213 Permission is granted to anyone to make or distribute verbatim copies
2214 of this document as received, in any medium, provided that the
2215 copyright notice and this permission notice are preserved,
2216 thus giving the recipient permission to redistribute in turn.
2218 Permission is granted to distribute modified versions
2219 of this document, or of portions of it,
2220 under the above conditions, provided also that they
2221 carry prominent notices stating who last changed them.
2222 \f
2223 Local variables:
2224 version-control: never
2225 fill-column: 76
2226 End: