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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 2546, 2560, 5159, 6809, 10060, 10062, 10357, 10686, 11120, 11561, 12387,
13 12723, 13550, 13889, 13951, 13988, 14142, 14176, 14200, 14280, 14293,
14 14317, 14327, 14478, 14496, 14582, 14686, 14812, 14888, 14908, 14920,
15 14952, 14964, 14981, 14982, 14985, 14994, 14996, 15000, 15003, 15006,
16 15007, 15014, 15020, 15023, 15036, 15054, 15055, 15062, 15078, 15084,
17 15085, 15086, 15160, 15214, 15221, 15232, 15234, 15283, 15285, 15287,
18 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336, 15337, 15342,
19 15346, 15359, 15361, 15366, 15380, 15394, 15395, 15405, 15406, 15409,
20 15416, 15418, 15419, 15423, 15424, 15426, 15429, 15442, 15448, 15480,
21 15485, 15488, 15490, 15493, 15497.
23 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
24 #15078).
26 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
27 fixed (Bugzilla #15330).
29 * Add support for calling C++11 thread_local object destructors on thread
30 and program exit. This needs compiler support for offloading C++11
31 destructor calls to glibc.
33 * Improved worst case performance of libm functions with double inputs and
34 output.
36 * Support for priority inherited mutexes in pthread condition variables on
37 non-x86 architectures.
39 * Added a benchmark framework to track performance of functions in glibc.
41 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
42 It is based on draft TS 18661 and currently enabled as a GNU extension.
43 \f
44 Version 2.17
46 * The following bugs are resolved with this release:
48 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
49 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
50 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
51 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
52 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
53 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
54 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
55 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
56 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
57 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
58 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
59 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
60 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
61 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
62 14879, 14889, 14893, 14898, 14914.
64 * Optimization of memcpy for MIPS.
66 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
67 EMFILE has been fixed (Bugzilla #14889).
69 * The add-on ports collection is now distributed in the "ports" subdirectory
70 of the main GNU C Library distribution, rather than separately.
72 * Port to ARM AArch64 contributed by Linaro.
74 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
75 Optimized versions of memcpy, memset, and memcmp added for System z10 and
76 zEnterprise z196.
77 Implemented by Andreas Krebbel.
79 * The new function secure_getenv allows secure access to the environment,
80 returning NULL if running in a SUID/SGID process. This function replaces
81 the internal function __secure_getenv.
83 * SystemTap static probes have been added into the dynamic linker.
84 Implemented by Gary Benson.
86 * Optimizations of string functions strstr, strcasestr and memmem.
87 Implemented by Maxim Kuvyrkov.
89 * The minimum Linux kernel version that this version of the GNU C Library
90 can be used with is 2.6.16.
92 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
93 powerpc POWER7. Implemented by Will Schmidt.
95 * New configure option --disable-nscd builds the C library such that it
96 never attempts to contact the Name Service Caching Daemon (nscd).
97 New configure option --disable-build-nscd avoids building nscd itself;
98 this is the default if --disable-nscd is used.
100 * Improved support for cross-compilation, including cross-testing and
101 bootstrap builds without a previously built glibc.
103 * Several testsuite tests are now able to test multiple IFUNC variants of an
104 interface, rather than just testing the one that would be chooen by
105 default.
107 * New configure options --with-bugurl and --with-pkgversion, for
108 distributors to use to embed their bug-reporting and package version
109 information in --help and --version output.
111 * The ttyname and ttyname_r functions on Linux now fall back to searching for
112 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
113 allows creation of chroots without the procfs mounted on /proc.
115 * The `crypt' function now fails if passed salt bytes that violate the
116 specification for those values. On Linux, the `crypt' function will
117 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
118 enabled, and fail on encrypted strings using the MD5 or DES algorithm
119 when the mode is enabled.
121 * The `clock_*' suite of functions (declared in <time.h>) is now available
122 directly in the main C library. Previously it was necessary to link with
123 -lrt to use these functions. This change has the effect that a
124 single-threaded program that uses a function such as `clock_gettime' (and
125 is not linked with -lrt) will no longer implicitly load the pthreads
126 library at runtime and so will not suffer the overheads associated with
127 multi-thread support in other code such as the C++ runtime library.
129 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
130 sat_IN, and szl_PL.
131 \f
132 Version 2.16
134 * The following bugs are resolved with this release:
136 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
137 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
138 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
139 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
140 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
141 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
142 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
143 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
144 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
145 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
146 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
147 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
148 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
149 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
150 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
151 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
152 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
153 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
154 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
155 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
156 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
157 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
158 14277, 14278.
160 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
161 configuring glibc with:
162 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
163 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
164 Implemented by H.J. Lu.
166 * ISO C11 support:
168 + define static_assert
170 + do not declare gets
172 + declare at_quick_exit and quick_exit also for ISO C11
174 + aligned_alloc. NB: The code is deliberately allows the size parameter
175 to not be a multiple of the alignment. This is a moronic requirement
176 in the standard but it is only a requirement on the caller, not the
177 implementation.
179 + timespec_get added
181 + uchar.h support added
183 + CMPLX, CMPLXF, CMPLXL added
185 Implemented by Ulrich Drepper.
187 * Support for the IA-64 has been moved to ports.
189 * Remove support for anything but ELF binary format
191 * Checking versions of poll, ppoll added.
192 Implemented by Ulrich Drepper.
194 * More generic and 64-bit performance optimizations to math functions.
195 Implemented by Ulrich Drepper.
197 * New configure option --enable-obsolete-rpc makes the deprecated RPC
198 headers and functions available at compile time as they were before
199 version 2.14. This option will be removed at some time in the future
200 after the TI-RPC library becomes fully sufficient for the needs of
201 existing applications.
203 * Compatibility code for Linux kernel versions before 2.4 has been removed.
204 Note that glibc is not expected to work with any Linux kernel version
205 before 2.6.
207 * New header <sys/auxv.h> and function getauxval allowing easy access to
208 the AT_* key-value pairs passed from the Linux kernel. The header also
209 defines the HWCAP_* bits associated with the AT_HWCAP key.
211 * New locales: mag_IN
213 * New configure option --enable-systemtap builds SystemTap static probes
214 into libc for setjmp and longjmp and into libpthread for various operations.
215 So far the setjmp/longjmp probes and some of the libpthread probes are
216 provided only for i*86 and x86_64.
217 Implemented by Roland McGrath and Rayson Ho.
219 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
221 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
222 and Will Schmidt.
224 * More optimized functions for SPARC. Implemented by David S. Miller.
226 * Improved support for cross-compilation, especially bootstrap builds
227 without a previously built glibc.
229 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
230 Chris Metcalf from Tilera.
232 * Support for the old ARM ABI has been removed from ports. Only the EABI is
233 now supported for ARM processors.
235 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
236 as the name of the dynamic linker, to distinguish it from the
237 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
239 * Support for CRIS has been removed from ports.
241 * A new class of installed header has been documented for low-level
242 platform-specific functionality. PowerPC added the first instance with a
243 function to provide time base register access. Contributed by Tulio
244 Magno Quites Machado Filho.
246 * ix86 configurations now install header files that are consistent with
247 what x86-64 configurations install. These same header files can be used
248 for -m32, -m64, or -mx32 builds.
249 Contributed by H.J. Lu.
251 * Math library bug fixes. A thorough audit of all open math library bugs was
252 conducted by Joseph Myers. Significant progress was made on many math
253 library bugs resulting in more accurate exceptions and function results.
254 Many thanks to all those that contributed including Andreas Jaeger for his
255 patch review and work on the x87 trigonometric instruction issues.
257 * Timezone data is no longer installed. Timezone-related binaries and scripts
258 will continue to be installed. Users should obtain their timezone data from
259 their distribution provider or from the tzdata package at
260 <ftp://munnari.oz.au/pub/>.
261 \f
262 Version 2.15
264 * The following bugs are resolved with this release:
266 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
267 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
268 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
269 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
270 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
271 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
272 13484, 13506, 13515, 13523, 13524, 13538, 13540
274 * New program pldd to list loaded object of a process
275 Implemented by Ulrich Drepper.
277 * Add nss_db support back to glibc. No more dependency on Berkeley db
278 and support for initgroups lookups.
279 Implemented by Ulrich Drepper.
281 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
282 Contributed by HJ Lu.
284 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
285 Contributed by HJ Lu.
287 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
288 on x86-32 and x86-64.
289 Contributed by Liubov Dmitrieva.
291 * Optimized strchr and strrchr for SSE on x86-32.
292 Contributed by Liubov Dmitrieva.
294 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
295 for x86-64 and x86-32.
296 Contributed by Liubov Dmitrieva.
298 * New interfaces: scandirat, scandirat64
299 Implemented by Ulrich Drepper.
301 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
302 Implemented by Ulrich Drepper.
304 * nscd now also caches the netgroup database.
305 Implemented by Ulrich Drepper.
307 * Integrate libm with gcc's -ffinite-math-only option.
308 Implemented by Ulrich Drepper.
310 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
311 to math functions. Implemented by Ulrich Drepper.
313 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
314 Implemented by Ulrich Drepper.
316 * New Linux interfaces: process_vm_readv, process_vm_writev
318 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
319 Implemented by Ulrich Drepper.
321 * Optimized nearbyint and strcasecmp for PPC.
322 Implemented by Adhemerval Zanella.
324 * New locales: bho_IN, unm_US, es_CU, ta_LK
325 \f
326 Version 2.14
328 * The following bugs are resolved with this release:
330 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
331 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
332 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
333 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
334 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
335 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
336 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
337 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
338 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
339 12795, 12811, 12813, 12814, 12841
341 * The RPC implementation in libc is obsoleted. Old programs keep working
342 but new programs cannot be linked with the routines in libc anymore.
343 Programs in need of RPC functionality must be linked against TI-RPC.
344 The TI-RPC implementation is IPv6 enabled and there are other benefits.
346 Visible changes of this change include (obviously) the inability to link
347 programs using RPC functions without referencing the TI-RPC library and the
348 removal of the RPC headers from the glibc headers.
349 Implemented by Ulrich Drepper.
351 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
352 syncfs, setns, sendmmsg
354 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
355 yue_HK, lij_IT, mhr_RU
357 * New encodings: CP770, CP771, CP772, CP773, CP774
359 * New program sotruss to trace calls through PLTs
360 Implemented by Ulrich Drepper.
362 * The malloc hook implementation is marked deprecated and will be removed
363 from the default implementation in the next version. The design never
364 worked ever since the introduction of threads. Even programs which do
365 not create threads themselves can use multiple threads created internally.
366 \f
367 Version 2.13
369 * The following bugs are resolved with this release:
371 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
372 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
373 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
374 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
375 12378, 12394, 12397
377 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
379 * POWER7 optimizations: memset, memcmp, strncmp
381 * New optimized string functions for x86-64: strnlen (SSE2),
382 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
383 Implemented by Ulrich Drepper.
384 \f
385 Version 2.12
387 * The following bugs are resolved with this release:
389 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
390 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
391 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
392 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
393 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
394 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
395 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
396 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
398 * New interfaces: pthread_getname_np, pthread_setname_np
400 * New Linux interface: recvmmsg
402 * STT_GNU_IFUNC implemented for Sparc by David Miller.
404 * The dynamic linker now recognizes supported ABI versions from the
405 EI_ABIVERSION field in the ELF header.
406 Implemented by Ulrich Drepper.
408 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
409 will not be used to fill in password fields in the passwd.byname replies.
410 Instead it is used to synthesize the shadow.byname table, should it be
411 missing. This is a useful mode in some installations involving Solaris.
412 Implemented by Ulrich Drepper.
414 * New locales: kok_IN, sq_MK, cv_RU
415 \f
416 Version 2.11
418 * The following bugs are resolved with this release:
420 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
421 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
422 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
423 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
424 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
425 10789, 10817, 10823, 10840, 10847
427 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
428 mkostemps64
429 Implemented by Ulrich Drepper.
431 * Checking version of longjmp added that fails if an uninitialized stack
432 frame would be created. Implemented by Ulrich Drepper.
434 * STT_GNU_IFUNC is now supported in static executables.
435 Implemented by H.J. Lu.
437 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
439 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
440 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
441 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
442 Contributed by H.J. Lu.
444 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
445 Implemented by Ulrich Drepper.
447 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
448 strstr, strcasestr.
449 Contributed by H.J. Lu.
451 * Support for fma instruction in AVX on x86-64.
452 Implemented by H.J. Lu and Ulrich Drepper.
454 * AVX support in x86-64 auditing support in ld.so.
455 Implemented by H.J. Lu.
457 * STB_GNU_UNIQUE support added.
458 Implemented by Ulrich Drepper.
460 * Implement second fallback mode for optimized DNS lookup for even more
461 broken environments. If two requests from the same port are not
462 handled correctly close the socket and open a new one before sending
463 the second request. The 'single-request-reopen' option in /etc/resolv.conf
464 can be used to select this mode right away, instead of rediscovering the
465 necessity is every process again.
466 Implemented by Ulrich Drepper.
468 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
469 Implemented by Adam Tkac.
471 * Optimized iconv conversions for S390x.
472 Implemented by Andreas Krebbel.
474 * Using condvars with PI mutexes is now more efficient due to kernel
475 support for requeueing to PI futexes. NPTL support added for x86-64.
476 Implemented by Ulrich Drepper.
478 * New locales: ps_AF, my_MM
479 \f
480 Version 2.10
482 * The following bugs are resolved with this release:
484 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
485 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
486 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
487 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
488 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
490 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
491 Implemented by Ulrich Drepper.
493 * New Linux interfaces: accept4, fallocate, fallocate64.
494 Implemented by Ulrich Drepper.
496 * Correct declarations of string function when used in C++ code. This
497 could lead to compile errors for invalid C++ code.
499 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
500 now in POSIX.
502 * New POSIX 2008 interface: psiginfo
503 Implemented by Ulrich Drepper.
505 * New ISO C++1x interfaces: quick_exit, at_quick_exit
506 Implemented by Ulrich Drepper.
508 * Support for selecting between multiple function definitions at runtime
509 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
511 * The libcrypt library can now use the hash function implementations in
512 NSS. Implemented by Ulrich Drepper.
514 * The malloc implementation can be compiled to be less memory efficient
515 but higher performing in multi-threaded programs.
516 Implemented by Ulrich Drepper.
518 * New locales: nan_TW@latin, ks_IN
520 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
521 Implemented by Ulrich Drepper.
523 * Extended printf hook support. It is possible to use user-defined types
524 and extend existing format specifiers.
525 Implemented by Ulrich Drepper.
527 * Handling for group shadow files has been added.
528 Implemented by Ulrich Drepper.
530 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
531 servers (the case, e.g., for some people using the built-in DNS
532 server in ADSL modems/routers). There is a once-per-process timeout
533 in case of a broken server. To avoid it, users can run nscd or put
534 'options single-request' in /etc/resolv.conf.
535 Implemented by Ulrich Drepper.
536 \f
537 Version 2.9
539 * The following bugs are resolved with this release:
541 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
542 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
543 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
544 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
545 6968, 6974, 6980, 6995, 7008, 7009, 7029
547 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
548 up at the same time. Implemented by Ulrich Drepper.
550 * TLS descriptors for LD and GD on x86 and x86-64.
551 Implemented by Alexandre Oliva.
553 * getaddrinfo now handles DCCP and UDPlite.
554 Implemented by Ulrich Drepper.
556 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
557 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
558 Implemented by Ulrich Drepper.
560 * New implementation of memmem, strstr, and strcasestr which is O(n).
561 Implemented by Eric Blake.
563 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
565 * Implement "e" option for popen to open file descriptor with the
566 close-on-exec flag set. Implemented by Ulrich Drepper.
568 * Implement "b" mode for fmemopen. In this mode writes writes don't
569 implicitly add a NUL byte and seeks from the end of the buffer really
570 use the buffer end, not the string length as the basis.
571 Implemented by Ulrich Drepper.
573 * Many functions, exported and internal, now atomically set the close-on-exec
574 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
576 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
577 Sinhala)
578 Implemented by Pravin Satpute.
580 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
581 \f
582 Version 2.8
584 * The following bugs are resolved with this release:
586 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
587 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
588 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
589 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
590 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
591 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
592 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
594 * New locales: bo_CN, bo_IN, shs_CA.
596 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
598 * Sorting rules for some Indian languages (Devanagari and Gujarati).
599 Implemented by Pravin Satpute.
601 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
603 * nscd caches now all timeouts for DNS entries
604 Implemented by Ulrich Drepper.
606 * nscd is more efficient and wakes up less often.
607 Implemented by Ulrich Drepper.
609 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
610 vdprintf, and obstack_vprintf.
611 Implemented by Jakub Jelinek.
613 * Faster memset for x86-64.
614 Implemented by Harsha Jagasia and H.J. Lu.
616 * Faster memcpy on x86.
617 Implemented by Ulrich Drepper.
619 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
620 Implemented by Ulrich Drepper.
622 * Faster sqrt and sqrtf implemention for some PPC variants.
623 Implemented by Steven Munroe.
624 \f
625 Version 2.7
627 * The following bugs are resolved with this release:
629 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
630 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
631 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
632 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
633 5071, 5103, 5104, 5112, 5113, 5184, 5186
635 * More checking functions: fread, fread_unlocked, open*, mq_open.
636 Implemented by Jakub Jelinek and Ulrich Drepper.
638 * Extend fortification to C++. Implemented by Jakub Jelinek.
640 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
641 by not recognizing 'a' as a modifier when those specs are requested.
642 Implemented by Jakub Jelinek.
644 * PPC optimizations to math and string functions.
645 Implemented by Steven Munroe.
647 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
648 options to be passed. Implemented by Ulrich Drepper.
650 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
652 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
653 Implemented by Ulrich Drepper.
655 * Handle private futexes in the NPTL implementation.
656 Implemented by Jakub Jelinek and Ulrich Drepper.
658 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
659 Implemented by Roland McGrath and Ulrich Drepper.
661 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
663 * SHA-256 and SHA-512 based password encryption.
664 Implemented by Ulrich Drepper.
666 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
667 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
668 yo_NG.
670 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
671 Implemented by Ulrich Drepper.
672 \f
673 Version 2.6
675 * The following bugs are resolved with this release:
677 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
678 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
679 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
680 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
681 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
682 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
683 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
684 4702, 4858
686 * New Linux interfaces: epoll_pwait, sched_getcpu.
688 * New generic interfaces: strerror_l.
690 * nscd can now cache the services database. Implemented by Ulrich Drepper.
691 \f
692 Version 2.5
694 * The following bugs are resolved with this release:
696 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
697 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
698 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
699 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
700 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
701 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
702 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
703 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
704 3225, 3251, 3252, 3253, 3273
706 * For Linux, the sorting of addresses returned by getaddrinfo now also
707 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
708 Implemented by Ulrich Drepper.
710 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
711 Implemented by Ulrich Drepper.
713 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
715 * New iconv module for MIK. Contributed by Alexander Shopov.
717 * For sites with broken group and/or passwd database, the auto-propagate
718 option of nscd can prevent creating ID lookup entries from the results
719 of a name lookup and vice versa. This usually is no problem but some
720 site might have problems with the default behavior.
721 Implemented by Ulrich Drepper.
723 * Iterating over entire database in NIS can be slow. With the
724 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
725 to trade time for memory. The entire database will be read at once.
726 Implemented by Ulrich Drepper.
728 * The interfaces introduced in RFC 3542 have been implemented by
729 Ulrich Drepper.
731 * Support for the new ELF hash table format was added by Ulrich Drepper.
733 * Support for priority inheritance mutexes added by Jakub Jelinek and
734 Ulrich Drepper.
736 * Support for priority protected mutexes added by Jakub Jelinek.
738 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
739 or_IN, csb_PL, fy_NL, sr_ME.
740 \f
741 Version 2.4
743 * More overflow detection functions.
745 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
746 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
748 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
749 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
750 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
751 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
752 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
753 by Masahide Washizawa.
755 * It is now possible to install audit libraries for the dynamic linker using
756 LD_AUDIT. Implemented by Ulrich Drepper.
758 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
759 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
760 For a libc and libpthread that works well on Linux 2.4 kernels, we
761 recommend using the stable 2.3 branch.
763 * The new function open_wmemstream acts like open_memstream,
764 but uses a wchar_t wide character buffer.
766 * The new function ppoll is an improved version of poll, similar to pselect.
768 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
769 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
770 renameat, unlinkat, linkat, symlinkat, readlinkat.
772 * New Linux kernel system calls: unshare,
773 inotify_init, inotify_add_watch, inotify_rm_watch.
775 * The euidaccess function is now also known by the alias eaccess,
776 for compatibility with some other systems.
778 * Timezone data updated to 2006b version.
779 \f
780 Version 2.3.6
782 * The following bugs are resolved with this release:
784 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
785 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
786 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
787 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
788 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
789 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
791 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
793 * As of this release, GCC 4 can be used to compile the C Library.
795 * Timezone data updated to 2005m version.
796 \f
797 Version 2.3.5
799 * The following bugs are resolved with this release:
801 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
802 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
803 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
804 777, 787, 821, 822, 823, 825
806 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
807 \f
808 Version 2.3.4
810 * Support for RFC 3678. Real implementations exist only for Linux so far.
811 Implemented by Ulrich Drepper.
813 * nscd can now cache entries persistently. Expiring entries are reloaded.
814 For speedups the cache can be shared in memory with client processes.
815 Implemented by Ulrich Drepper.
817 * nscd can now perform SELinux checks.
818 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
820 * getaddrinfo queries are now cached. Canonical name lookup is performed
821 efficiently.
822 Implemented by Ulrich Drepper.
824 * The nothrow function attribute is used when headers are used by gcc when
825 compiling C code. This can avoid significant amounts of exception
826 handling data.
828 * The malloc functions perform more error checking and are stricter when
829 it comes to reacting on errors. The default action is to terminate
830 the process after showing an error message. Implemented by Ulrich Drepper.
832 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
833 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
835 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
836 namespaces using the new function dlmopen(). This feature is of course,
837 like most other dynamic loading functionality, not available in statically
838 linked applications. Implemented by Ulrich Drepper.
840 * Low-overhead boundary checking variants of string and some stdio functions
841 were added. These are to be used in conjunction with a gcc patch by
842 Jakub Jelinek which adds calls to these functions if possible.
843 Implemented by Jakub Jelinek and Ulrich Drepper.
845 * Old code for several operating systems and machine architectures that
846 have not been in working condition in a long time have been removed from
847 the main source tree maintained by the GNU C Library's maintainers.
848 These files are now reside in the separate `ports' source module
849 that is usable as an add-on when building the library.
850 \f
851 Version 2.3.3
853 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
854 interrogate the dynamic linker, compatible with the Solaris interface.
856 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
857 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
859 * getifaddrs now uses the netlink interface on Linux to get its information.
860 Implemented by Thorsten Kukuk.
862 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
863 Implemented by Ulrich Drepper.
865 * support for non-executable stacks on x86 has been added. Changes mostly
866 by Roland McGrath.
868 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
869 and Ulrich Drepper.
871 * getaddrinfo now performs destination address selection according to
872 RFC 3484.
873 \f
874 Version 2.3.2
876 * Thread-safe interfaces for many functions that access locale data
877 were added in version 2.3, but these features were omitted from NEWS.
878 Many functions have variants with an `_l' suffix that take a `locale_t'
879 object as a parameter rather than consulting the current locale.
880 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
881 create and maintain `locale_t' objects. Additionally, the new function
882 `uselocale' sets "the current locale" (as used by functions not so
883 parameterized) set for an individual thread. These features were added
884 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
886 * The functions getresuid, getresgid, setresuid, and setresgid, which
887 have long been available on Linux, are now declared in <unistd.h>
888 and are now also available on the Hurd.
890 * ELF thread-local storage support (TLS) now works on x86-64.
892 * The new dynamic string token $LIB is expanded in shared library names.
893 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
895 * Aldy Hernandez contributed complete software floating point support for
896 PowerPC machines with no FPU.
898 * fexecve is implemented on Linux.
900 * The `btowc' function should work at least twice as fast due to
901 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
903 * With approriate thread add-ons cancelable functions are now implemented
904 in libc.so as well. No need to call the function in libpthread. This
905 change allowed to finally disable the incorrect and expensive handling
906 of weak definition in ld.so.
908 * Yet more PLT entries in libc.so have been removed. We finally arrived
909 at the bare minimum. Startup times improved appropriately.
911 * Support for the new Linux/x86 system call interface was added. The
912 AT_SYSINFO auxiliary vector entry is recognized and handled.
913 \f
914 Version 2.3
916 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
917 charsets.
919 * iconv (the program and the interface) now accepts empty names (excluding
920 options like //TRANSLIT) to mean "use charset of current locale".
922 * localedef can now transliterate characters in strings which are not in
923 the provided charmap. The information from the input locale is used.
925 * Prelinking support was added for ELF targets. This requires additional
926 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
928 * Read-only stdio streams now use mmap to speed up operation by eliminating
929 copying and buffer underflows. To use add 'm' to the mode string of
930 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
932 * The malloc functions were completely rewritten by Wolfram Gloger based
933 on Doug Lea's malloc-2.7.0.c.
935 * Isamu Hasegawa contributed a completely new and POSIX-conformant
936 implementation of regex.
938 * Bruno Haible upgraded the iconv and locale implementation to support
939 Unicode 3.2.
941 * Contents of the LC_* and LANG environment variables in the CEN style are
942 not recognized anymore. It never was used. Change by Ulrich Drepper.
944 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
945 thread-local storage (TLS) ABI on some platforms.
946 Changes by Ulrich Drepper. SH support by Kaz Kojima.
948 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
949 EUC-JISX0213, and TSCII.
951 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
952 BSD-compatible interface for getting all network interface addresses.
953 Implementation for IPv4 by Roland McGrath.
955 * Loading of locale data is faster due to the introduction of a locale
956 archive. Implemented by Roland McGrath and Ulrich Drepper.
958 * Startup times are significantly reduced by not using exported functions
959 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
960 and Ulrich Drepper.
962 * Steven Munroe contributed a port to PowerPC64/Linux.
963 \f
964 Version 2.2.6
966 * The Hurd now uses the GNU libio implementation of stdio rather than the
967 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
969 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
970 with the same behavior as the Linux system call of the same name.
971 \f
972 Version 2.2.5
974 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
975 128-bit long double format.
977 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
978 IBM1161, and IBM1162 charsets.
980 * Andreas Jaeger contributed a port to x86-64/Linux.
982 * Peter Bruin contributed a port to PowerPC/Hurd.
984 * libc functions using I/O streams now can handle wide-oriented streams
985 as well.
987 * optimizations in the dynamic linker. Binaries created by recent binutils
988 versions start up quicker due to reduced time spent on relocations.
990 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
991 \f
992 Version 2.2.4
994 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
995 asinh, atanh, j0 for the 128-bit long double format.
997 * Bruno Haible updated all the code handling Unicode in some form to
998 support Unicode 3.1.
1000 * Speed of regex for single-byte locales is back to previous levels.
1001 Patch by Isamu Hasegawa.
1003 * Alpha, SPARC, and IA-64 now also using floating stacks.
1005 * Startup time of internationalized applications greatly improved through
1006 iconv cache. Use iconvconfig to generate the cache file.
1007 Contributed by Ulrich Drepper.
1009 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1010 severe performance problems. Patch by David Mosberger.
1012 * The Hurd port got a lot more functionality like AIO, various stdio
1013 extensions, etc. Mainly done by Roland McGrath.
1015 * mtrace can now lookup symbols in shared libraries.
1016 \f
1017 Version 2.2.3
1019 * Intel's IA-64 math library is largely integrated. It provides fast and
1020 accurate implementatations for most basic and standard math functions
1021 in float, double, and long double format.
1023 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1024 and asin for the 96-bit long double format and asin, log, tan for the
1025 128-bit long double format.
1027 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1028 The basic double functions exist today. Contributed by Abraham Ziv
1029 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1030 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1032 * An asynchronous name lookup library was added. The interface is designed
1033 after POSIX AIO. The proposal was circulated beforehand to get comments.
1034 No negative ones came in. Implemented by Ulrich Drepper.
1036 * Port to S390/64bit contributed by Martin Schwidefsky
1037 <schwidefsky@de.ibm.com>.
1039 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1040 of functions for Linux/IA-64.
1042 * The RPC code is now thread safe. Threads can now use the same service
1043 of different services at the same time. Patch by Eric Norum
1044 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1046 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1047 family of functions for Linux/S390.
1049 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1050 of functions for Linux/x86.
1052 * Port to Linux/CRIS contributed by Axis Communications.
1053 \f
1054 Version 2.2.2
1056 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1057 we can now check for namespace violations and missing declarations. The
1058 result is that almost all headers are now Unix-compliant (as defined in
1059 the upcoming XPG6). The negative side is that some programs might need
1060 corrections, too, if they depend on the incorrect form of the headers in
1061 previous versions which defined too many symbols and included too many
1062 other headers.
1064 * regex now handles multibyte character sets correctly.
1065 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1067 * iconv (the program) does now conform to the upcoming XPG6 and handles
1068 charmaps. Instead of the charset names the path of charmaps can be
1069 provided and the conversion happens based on this data.
1070 Contributed by Ulrich Drepper.
1072 * The locale program now provides detailed information about the installed
1073 locales. While
1075 locale -a
1077 only lists the names of the supported locales
1079 locale -a --verbose
1081 provides details such as country, language, and codeset name.
1082 Contributed by Ulrich Drepper.
1083 \f
1084 Version 2.2.1
1086 * The gencat program now parses the input file according to the charset
1087 selected by the LC_CTYPE category. This is important for stateful
1088 character sets. To make generating catalogs easier there is a way
1089 to overwrite the charset selected by the locale: before the first
1090 message or $ quote line the catalog can contain a line like
1092 $ codeset=ISO-8859-2
1094 to select the charset (ISO-8859-2 in this case).
1096 Implemented by Shinya Hanataka and Ulrich Drepper.
1098 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1099 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1100 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1102 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1103 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1105 * The LANGUAGE environment variable is now ignored unless the locale is
1106 changed from the default "C" locale.
1108 * The usual bug fixes.
1109 \f
1110 Version 2.2
1112 * Greg McGary added runtime support for bounds checking using gcc's
1113 new -fbounded-pointers option. ix86 target is complete. PowerPC
1114 is in progress.
1116 * Thorsten Kukuk added secure mode support to nscd.
1118 * The Berkeley db libraries have been removed.
1120 Related, the nss_db module is now in a separate package since it
1121 obviously requires a database library being available.
1123 * Wide character I/O streams implemented by Ulrich Drepper.
1125 * Functions from the extended socket API added by Ulrich Drepper.
1127 * Functions feenableexcept and fedisableexcept to control the
1128 behaviour of individual exceptions have been added by Andreas Jaeger.
1130 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1132 * The resolver code has been updated from bind 8.2.3-T5B which supports
1133 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1134 and Mark Kettenis.
1136 This change could in some situations effect backward compatibility. Since
1137 now `_res' is a thread-local instead of a global variable, modifying it
1138 in one thread does not have any effect in other threads.
1140 The resolver library was also extended to allow IPv6 as the transport
1141 protocol for the requests. This work was done by Stig Venaas.
1143 * Compatibility code for K&R C compilers has been removed from the
1144 header files. A ISO C compiler is needed to use the library
1145 (conforming to either C89 or C99 standard).
1147 * Complete rewrite of the localedef program to support multibyte character
1148 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1149 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1150 Implemented by Ulrich Drepper.
1152 Bruno Haible significantly improved the generation and use of the data
1153 structures for the wide character tables.
1155 * Plural handling in gettext implemented by Ulrich Drepper.
1157 * The utmp daemon has been removed.
1159 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1161 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1162 and Yutaka Niibe.
1164 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1166 * POSIX barriers implemented by Kaz Kylheku.
1168 * POSIX spawn function family implemented by Ulrich Drepper.
1170 * POSIX spinlocks are now available.
1172 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1174 * the configure option --enable-kernel=X.Y.Z allows to strip out
1175 compatibility for kernel versions before X.Y.Z. This is currently only
1176 implemented for Linux.
1178 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1179 field sin6_scope_id. This means that all programs using IPv6 should be
1180 recompiled. Don't expect binary compatibility with previous glibc
1181 versions.
1183 * various conversion modules for IBM character sets contributed by
1184 Masahide Washizawa.
1186 * IA-64 port by Jes Sorensen and HJ Lu.
1187 \f
1188 Version 2.1.3
1190 * bug fixes
1192 \f
1193 Version 2.1.2
1195 * bug fixes
1197 \f
1198 Version 2.1.1
1200 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1202 * New xdr functions are added; some rpc functions are now 64bit clean.
1204 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1206 * Fixed known incompatibilities with glibc 2.0.
1208 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1210 * Optimized a number of functions (especially the ELF dynamic loader).
1212 * Update timezone data files.
1214 * lots of charmaps corrections
1216 * some new locale definitions and charmaps
1218 \f
1219 Version 2.1
1221 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1222 conform to POSIX member type requirements. Symbol versions have been
1223 adjusted as needed within the library, and for direct use by applications,
1224 but there is potential for problems if third-party libraries use
1225 struct timeval as part of their interface. This does not present
1226 a problem for X and other "essential" system libraries.
1228 * An additional locale model to support C++ Standard Library locale
1229 model and probably more was implemented by Ulrich Drepper.
1231 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1232 symbol level.
1234 * Miles Bader provided the `argp' function family to support hierachical
1235 command line argument parsing, layered on top of getopt.
1237 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1239 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1240 numbers.
1242 * scanf recognizes the %a and %A format for scanning floating point numbers.
1244 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1245 information and interfaces for the available integer types.
1247 * about 130 new math functions were added to implement the ISO C9x math
1248 library.
1250 * the new header <complex.h> contains definitions of the complex math
1251 functions from ISO C 9X.
1253 * the new header <tgmath.h> defines generic macros to use complex or
1254 real valued functions.
1256 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1258 * Andreas Jaeger provided a test suite for the math library.
1260 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1262 * Ulrich Drepper added character set conversion functions (iconv).
1264 * Optimized string functions have been added.
1266 * The localedata addon is now part of glibc.
1268 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1270 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1271 daemon for NSS (nscd).
1273 Missing a better place here are some numbers on improvements. Under
1274 Linux 2.1.125 un-tar-ing the kernel sources takes
1276 user system wall
1278 using local files 12.19s 6.88s 22.91s
1280 using NIS 13.92s 8.91s 26.34s
1282 using NIS & nscd 10.37s 7.34s 25.30s
1284 using NIS+ 27.57s 30.37s 640.46s
1286 using NIS+ & nscd 10.25s 7.83s 26.51s
1288 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1290 Keep in mind that non-namelookup related operations dominate above times.
1291 It was just a common complain that using NIS+ unpacking the kernel is
1292 horribly slow.
1294 [1] The old nscd implementation is not available anymore since it was
1295 distributed with glibc up to version 2.0.98 and thus is now replaced.
1297 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1299 * Mark Kettenis provided a Hesiod NSS module.
1301 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1302 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1304 * rcmd can now handle netgroups (Dick Streefland).
1306 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1307 Bambrough.
1309 * Support for the IPv6 protocol has been added to the socket API, as per the
1310 latest draft standards.
1312 * Support for Linux 2.2 has been added.
1314 * Interface changes relative to the latest 2.0.x release:
1315 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1316 addseverity NEW: Unix98
1317 alphasort64 NEW: LFS
1318 argp_err_exit_status NEW: argp, GNU ext
1319 argp_error NEW: argp, GNU ext
1320 argp_failure NEW: argp, GNU ext
1321 argp_help NEW: argp, GNU ext
1322 argp_parse NEW: argp, GNU ext
1323 argp_program_bug_address NEW: argp, GNU ext
1324 argp_program_version NEW: argp, GNU ext
1325 argp_program_version_hook NEW: argp, GNU ext
1326 argp_state_help NEW: argp, GNU ext
1327 argp_usage NEW: argp, GNU ext
1328 authdes_create NEW: Secure RPC
1329 authdes_getucred NEW: Secure RPC
1330 authdes_pk_create NEW: Secure RPC
1331 backtrace NEW: GNU ext.
1332 backtrace_symbols NEW: GNU ext.
1333 backtrace_symbols_fd NEW: GNU ext.
1334 cacos NEW: ISO C 9x
1335 cacosf NEW: ISO C 9x
1336 cacosh NEW: ISO C 9x
1337 cacoshf NEW: ISO C 9x
1338 cacoshl NEW: ISO C 9x
1339 cacosl NEW: ISO C 9x
1340 capget NEW: kernel
1341 capset NEW: kernel
1342 carg NEW: ISO C 9x
1343 cargf NEW: ISO C 9x
1344 cargl NEW: ISO C 9x
1345 casin NEW: ISO C 9x
1346 casinf NEW: ISO C 9x
1347 casinh NEW: ISO C 9x
1348 casinhf NEW: ISO C 9x
1349 casinhl NEW: ISO C 9x
1350 casinl NEW: ISO C 9x
1351 catan NEW: ISO C 9x
1352 catanf NEW: ISO C 9x
1353 catanh NEW: ISO C 9x
1354 catanhf NEW: ISO C 9x
1355 catanhl NEW: ISO C 9x
1356 catanl NEW: ISO C 9x
1357 cbc_crypt NEW: Secure RPC
1358 ccos NEW: ISO C 9x
1359 ccosf NEW: ISO C 9x
1360 ccosh NEW: ISO C 9x
1361 ccoshf NEW: ISO C 9x
1362 ccoshl NEW: ISO C 9x
1363 ccosl NEW: ISO C 9x
1364 cexp NEW: ISO C 9x
1365 cexpf NEW: ISO C 9x
1366 cexpl NEW: ISO C 9x
1367 cimag NEW: ISO C 9x
1368 cimagf NEW: ISO C 9x
1369 cimagl NEW: ISO C 9x
1370 clearerr_locked REMOVED
1371 clntunix_create NEW: sunrpc ext
1372 clog NEW: ISO C 9x
1373 clog10 NEW: ISO C 9x
1374 clog10f NEW: ISO C 9x
1375 clog10l NEW: ISO C 9x
1376 clogf NEW: ISO C 9x
1377 clogl NEW: ISO C 9x
1378 conj NEW: ISO C 9x
1379 conjf NEW: ISO C 9x
1380 conjl NEW: ISO C 9x
1381 cpow NEW: ISO C 9x
1382 cpowf NEW: ISO C 9x
1383 cpowl NEW: ISO C 9x
1384 cproj NEW: ISO C 9x
1385 cprojf NEW: ISO C 9x
1386 cprojl NEW: ISO C 9x
1387 creal NEW: ISO C 9x
1388 crealf NEW: ISO C 9x
1389 creall NEW: ISO C 9x
1390 creat64 NEW: LFS
1391 csin NEW: ISO C 9x
1392 csinf NEW: ISO C 9x
1393 csinh NEW: ISO C 9x
1394 csinhf NEW: ISO C 9x
1395 csinhl NEW: ISO C 9x
1396 csinl NEW: ISO C 9x
1397 csqrt NEW: ISO C 9x
1398 csqrtf NEW: ISO C 9x
1399 csqrtl NEW: ISO C 9x
1400 ctan NEW: ISO C 9x
1401 ctanf NEW: ISO C 9x
1402 ctanh NEW: ISO C 9x
1403 ctanhf NEW: ISO C 9x
1404 ctanhl NEW: ISO C 9x
1405 ctanl NEW: ISO C 9x
1406 des_setparity NEW: Secure RPC
1407 ecb_crypt NEW: Secure RPC
1408 endutxent NEW: Unix98
1409 exp10 NEW: ISO C 9x
1410 exp10f NEW: ISO C 9x
1411 exp10l NEW: ISO C 9x
1412 exp2 NEW: ISO C 9x
1413 exp2f NEW: ISO C 9x
1414 exp2l NEW: ISO C 9x
1415 fattach NEW: STREAMS
1416 fdetach NEW: STREAMS
1417 fdim NEW: ISO C 9x
1418 fdimf NEW: ISO C 9x
1419 fdiml NEW: ISO C 9x
1420 feclearexcept NEW: ISO C 9x
1421 fegetenv NEW: ISO C 9x
1422 fegetexceptflag NEW: ISO C 9x
1423 fegetround NEW: ISO C 9x
1424 feholdexcept NEW: ISO C 9x
1425 feof_locked REMOVED
1426 feraiseexcept NEW: ISO C 9x
1427 ferror_locked REMOVED
1428 fesetenv NEW: ISO C 9x
1429 fesetexceptflag NEW: ISO C 9x
1430 fesetround NEW: ISO C 9x
1431 fetestexcept NEW: ISO C 9x
1432 feupdateenv NEW: ISO C 9x
1433 fflush_locked REMOVED
1434 ffsl NEW: GNU ext.
1435 ffsll NEW: GNU ext.
1436 fgetpos64 NEW: LFS
1437 fgets_unlocked NEW: GNU ext.
1438 fileno_locked REMOVED
1439 fma NEW: ISO C 9x
1440 fmaf NEW: ISO C 9x
1441 fmal NEW: ISO C 9x
1442 fmax NEW: ISO C 9x
1443 fmaxf NEW: ISO C 9x
1444 fmaxl NEW: ISO C 9x
1445 fmin NEW: ISO C 9x
1446 fminf NEW: ISO C 9x
1447 fminl NEW: ISO C 9x
1448 fmtmsg NEW: Unix98
1449 fopen64 NEW: LFS
1450 fputc_locked REMOVED
1451 fputs_unlocked NEW: GNU ext.
1452 fread_unlocked NEW: GNU ext.
1453 freopen64 NEW: LFS
1454 fseeko NEW: Unix98
1455 fsetpos64 NEW: LFS
1456 fstatfs64 NEW: LFS
1457 fstatvfs NEW: Unix98
1458 fstatvfs64 NEW: LFS
1459 ftello NEW: Unix98
1460 ftello64 NEW: LFS
1461 ftruncate64 NEW: LFS
1462 ftw64 NEW: LFS
1463 fwrite_unlocked NEW: GNU ext.
1464 gai_strerror NEW: IPv6
1465 gamma_r REMOVED
1466 gammaf_r REMOVED
1467 gammal_r REMOVED
1468 getchar_locked REMOVED
1469 getdate NEW: Unix98
1470 getdate_err NEW: Unix98
1471 getdate_r NEW: GNU ext.
1472 getmsg NEW: STREAMS
1473 getnameinfo NEW: IPv6
1474 getnetname NEW: Secure RPC
1475 getpmsg NEW: STREAMS
1476 getpt NEW: Unix98 PTY
1477 getrlimit64 NEW: LFS
1478 getutxent NEW: Unix98
1479 getutxid NEW: Unix98
1480 getutxline NEW: Unix98
1481 glob64 NEW: GNU ext.
1482 globfree64 NEW: GNU ext.
1483 gnu_get_libc_release NEW: GNU ext.
1484 gnu_get_libc_version NEW: GNU ext.
1485 grantpt NEW: Unix98 PTY
1486 host2netname NEW: Secure RPC
1487 iconv NEW: iconv
1488 iconv_close NEW: iconv
1489 iconv_open NEW: iconv
1490 if_freenameindex NEW: IPv6
1491 if_indextoname NEW: IPv6
1492 if_nameindex NEW: IPv6
1493 if_nametoindex NEW: IPv6
1494 in6addr_any NEW: IPv6
1495 in6addr_loopback NEW: IPv6
1496 inet6_isipv4mapped NEW: IPv6
1497 isastream NEW: STREAMS
1498 iswblank NEW: GNU ext.
1499 key_decryptsession NEW: Secure RPC
1500 key_decryptsession_pk NEW: Secure RPC
1501 key_encryptsession NEW: Secure RPC
1502 key_encryptsession_pk NEW: Secure RPC
1503 key_gendes NEW: Secure RPC
1504 key_get_conv NEW: Secure RPC
1505 key_secretkey_is_set NEW: Secure RPC
1506 key_setnet NEW: Secure RPC
1507 key_setsecret NEW: Secure RPC
1508 llrint NEW: ISO C 9x
1509 llrintf NEW: ISO C 9x
1510 llrintl NEW: ISO C 9x
1511 llround NEW: ISO C 9x
1512 llroundf NEW: ISO C 9x
1513 llroundl NEW: ISO C 9x
1514 log2 NEW: ISO C 9x
1515 log2f NEW: ISO C 9x
1516 log2l NEW: ISO C 9x
1517 lrint NEW: ISO C 9x
1518 lrintf NEW: ISO C 9x
1519 lrintl NEW: ISO C 9x
1520 lround NEW: ISO C 9x
1521 lroundf NEW: ISO C 9x
1522 lroundl NEW: ISO C 9x
1523 lseek64 NEW: LFS
1524 makecontext NEW: Unix98
1525 mempcpy NEW: GNU ext.
1526 mmap64 NEW: LFS
1527 moncontrol REMOVED
1528 modify_ldt NEW: kernel
1529 nan NEW: ISO C 9x
1530 nanf NEW: ISO C 9x
1531 nanl NEW: ISO C 9x
1532 nearbyint NEW: ISO C 9x
1533 nearbyintf NEW: ISO C 9x
1534 nearbyintl NEW: ISO C 9x
1535 netname2host NEW: Secure RPC
1536 netname2user NEW: Secure RPC
1537 nexttoward NEW: ISO C 9x
1538 nexttowardf NEW: ISO C 9x
1539 nexttowardl NEW: ISO C 9x
1540 nftw NEW: Unix98
1541 nftw64 NEW: LFS
1542 open64 NEW: LFS
1543 passwd2des NEW: Secure RPC
1544 pow10 NEW: GNU ext.
1545 pow10f NEW: GNU ext.
1546 pow10l NEW: GNU ext.
1547 pread NEW: Unix98
1548 pread64 NEW: LFS
1549 printf_size NEW: GNU ext.
1550 printf_size_info NEW: GNU ext.
1551 profil_counter REMOVED
1552 pthread_mutexattr_getkind_np REPLACED
1553 pthread_mutexattr_setkind_np REPLACED
1554 ptsname NEW: Unix98 PTY
1555 ptsname_r NEW: Unix98 PTY
1556 putc_locked REMOVED
1557 putchar_locked REMOVED
1558 putgrent NEW: GNU ext.
1559 putmsg NEW: STREAMS
1560 putpmsg NEW: STREAMS
1561 pututxline NEW: Unix98
1562 pwrite NEW: Unix98
1563 pwrite64 NEW: LFS
1564 readdir64 NEW: LFS
1565 readdir64_r NEW: LFS
1566 remquo NEW: ISO C 9x
1567 remquof NEW: ISO C 9x
1568 remquol NEW: ISO C 9x
1569 round NEW: ISO C 9x
1570 roundf NEW: ISO C 9x
1571 roundl NEW: ISO C 9x
1572 rtime NEW: GNU ext.
1573 scalbln NEW: ISO C 9x
1574 scalblnf NEW: ISO C 9x
1575 scalblnl NEW: ISO C 9x
1576 scandir64 NEW: LFS
1577 sendfile NEW: kernel
1578 setcontext NEW: Unix98
1579 setrlimit64 NEW: LFS
1580 setutxent NEW: Unix98
1581 sighold NEW: Unix98
1582 sigignore NEW: Unix98
1583 sigqueue NEW: POSIX.1b
1584 sigrelse NEW: Unix98
1585 sigset NEW: POSIX.1b
1586 sigtimedwait NEW: POSIX.1b
1587 sigwaitinfo NEW: POSIX.1b
1588 sincos NEW: GNU ext.
1589 sincosf NEW: GNU ext.
1590 sincosl NEW: GNU ext.
1591 statfs64 NEW: LFS
1592 statvfs NEW: Unix98
1593 statvfs64 NEW: LFS
1594 strcasestr NEW: GNU ext.
1595 strtoimax NEW: ISO C 9x
1596 strtoumax NEW: ISO C 9x
1597 strverscmp NEW: GNU ext.
1598 svcauthdes_stats NEW: Secure RPC
1599 svcunix_create NEW: sunrpc etx
1600 svcunixfd_create NEW: sunrpc ext
1601 swapcontext NEW: Unix98
1602 tcgetsid NEW: Unix98 PTY
1603 tdestroy NEW: GNU ext.
1604 tgamma NEW: ISO C 9x
1605 tgammaf NEW: ISO C 9x
1606 tgammal NEW: ISO C 9x
1607 tmpfile64 NEW: LFS
1608 trunc NEW: ISO C 9x
1609 truncate64 NEW: LFS
1610 truncf NEW: ISO C 9x
1611 truncl NEW: ISO C 9x
1612 umount2 NEW: kernel
1613 unlockpt NEW: Unix98 PTY
1614 updwtmpx NEW: Unix98
1615 user2netname NEW: Secure RPC
1616 utmpxname NEW: Unix98
1617 versionsort NEW: GNU ext.
1618 versionsort64 NEW: GNU ext.
1619 waitid NEW: Unix98
1620 wcscasecmp NEW: GNU ext.
1621 wcsncasecmp NEW: GNU ext.
1622 wcsnlen NEW: GNU ext.
1623 wcstoimax NEW: ISO C 9x
1624 wcstoll NEW: ISO C 9x
1625 wcstoull NEW: ISO C 9x
1626 wcstoumax NEW: ISO C 9x
1627 wcswcs NEW: Unix98
1628 wordexp NEW: POSIX.2
1629 wordfree NEW: POSIX.2
1630 write_profiling REMOVED
1631 xdecrypt NEW: Secure RPC
1632 xdr_authdes_cred NEW: Secure RPC
1633 xdr_authdes_verf NEW: Secure RPC
1634 xdr_cryptkeyarg NEW: Secure RPC
1635 xdr_cryptkeyarg2 NEW: Secure RPC
1636 xdr_cryptkeyres NEW: Secure RPC
1637 xdr_getcredres NEW: Secure RPC
1638 xdr_key_netstarg NEW: Secure RPC
1639 xdr_key_netstres NEW: Secure RPC
1640 xdr_keybuf NEW: Secure RPC
1641 xdr_keystatus NEW: Secure RPC
1642 xdr_netnamestr NEW: Secure RPC
1643 xdr_sizeof NEW: Secure RPC
1644 xdr_unixcred NEW: sunrpc ext
1645 xencrypt NEW: Secure RPC
1646 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1647 \f
1648 Version 2.0.6
1650 * more bug fixes
1652 \f
1653 Version 2.0.5
1655 * more bug fixes
1657 * inet_ntoa is thread-safe
1659 * updwtmp is moved from libutil to libc
1661 * rewrite of cbrt function
1663 * update of timezone data
1664 \f
1665 Version 2.0.4
1667 * more bug fixes
1668 \f
1669 Version 2.0.3
1671 * more bug fixes
1672 \f
1673 Version 2.0.2
1675 * more bug fixes
1677 * add atoll function
1679 * fix complex problems in Berkeley DB code
1681 * fix math functions
1682 \f
1683 Version 2.0.1
1685 * fixed lots of header problems (especially Linux/GNU specific)
1687 * dynamic loader preserves all registers
1689 * Roland McGrath provided support for handling of auxiliary objects in
1690 the ELF dynamic loader.
1692 * support for parallel builds is improved
1693 \f
1694 Version 2.0
1696 * GNU extensions are no longer declared by default. To enable them you
1697 must define the macro `_GNU_SOURCE' in your program or compile with
1698 `-D_GNU_SOURCE'.
1700 * The library has changed from using GNU ld symbol aliases to using weak
1701 symbols where available. The ELF object file format supports weak
1702 symbols; GNU ld also supports weak symbols in the a.out format. (There
1703 is also now support for other GNU ld extensions in ELF. Use the
1704 `--with-elf' option to configure to indicate you have ELF, and
1705 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1706 of many files which contained only symbol aliases, reducing the size of
1707 the source and the compiled library; many other files were renamed to
1708 less cryptic names previously occupied by the symbol alias files.
1709 There is a new header file <elf.h> for programs which operate on
1710 files in the ELF format.
1712 * Converted to Autoconf version 2, so `configure' has more options.
1713 Run `configure --help' to see the details.
1715 * The library can now be configured to build profiling, highly-optimized
1716 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1717 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1718 `configure' enable building these extra libraries. The shared library is
1719 built by default when using both ELF and GNU ld. When shared libraries
1720 are enabled, the new library `-ldl' is available for arbitrary run-time
1721 loading of shared objects; its interface is defined in <dlfcn.h>. The
1722 new header file <link.h> gives access to the internals of the run-time
1723 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1724 application of same name on other systems and it provides information
1725 about dynamically linked binaries.
1727 * The C library now provides the run-time support code for profiling
1728 executables compiled with `-pg'. Programs can control the profiling code
1729 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1730 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1731 the support for this file format was contributed by David Mosberger-Tang.
1733 * The math code has been replaced with a math library based on fdlibm from
1734 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1735 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1736 functions. The math functions now reside in a separate library, so
1737 programs using them will need to use `-lm' their linking commands.
1739 * John C. Bowman contributed optimized ix87 assembler inline functions.
1741 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1742 mechanism similar to that found in Solaris 2. This is now used for the
1743 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1744 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1745 file controls what services are used for each individual database. This
1746 works by loading shared libraries with names specified in `nsswitch.conf',
1747 so service modules can be changed or added at any time without even
1748 relinking any program. Currently there are the file, db, and NIS based
1749 NSS services available.
1751 * The new functions `strtoq' and `strtouq' parse integer values from
1752 strings, like `strtol' and `strtoul', but they return `long long int' and
1753 `unsigned long long int' values, respectively (64-bit quantities).
1755 * The new functions `strtof' and `strtold' parse floating-point values from
1756 strings, like `strtod', but they return `float' and `long double' values,
1757 respectively (on some machines `double' and `long double' are the same).
1759 * Ulrich Drepper has contributed new implementations of the floating-point
1760 printing and reading code used in the `printf' family of functions and
1761 `strtod', `strtof', and `strtold'. These new functions are perfectly
1762 accurate, and much faster than the old ones.
1764 * The implementation of the POSIX locale model was completely rewritten by
1765 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1766 to compile the POSIX locale definition.
1768 * The former dummy implementations of the strcoll and strxfrm function are
1769 now replaced by fully functional code contributed by Ulrich Drepper. The
1770 collation information comes from the POSIX locale definitions.
1772 * The new header <langinfo.h> defines an interface for accessing
1773 various locale-dependent data (using the locale chosen with `setlocale').
1775 * Ulrich Drepper has contributed a new suite of functions for operation on
1776 wide-character and multibyte-character strings, in <wchar.h>;
1777 and classification and case conversion of wide characters, in <wctype.h>.
1778 These new functions are conforming to the ISO C, Amendement 1 specification.
1780 * There is now a second implementation of the standard I/O library available.
1781 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1782 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1784 * You can now use positional parameter specifications in format strings
1785 for the `printf' and `scanf' families of functions. For example,
1786 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1787 ``Number 6, Mr Jones''. This is mainly useful when providing different
1788 format strings for different languages, whose grammars may dictate
1789 different orderings of the values being printed. To support this
1790 feature, the interface for `register_printf_handler' has changed; see
1791 the header file <printf.h> for details.
1793 * The `printf' and `scanf' families of functions now understand a new
1794 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1795 to group numbers as indicated by the locale; for `scanf' and friends, this
1796 says to accept as valid only a number with all the proper grouping
1797 separators in the right places. In the default "C" locale, numbers are
1798 not grouped; but locales for specific countries will define the usual
1799 conventions (i.e. separate thousands with `,' in the US locale).
1801 * The pgrp functions have been regularized, slightly incompatibly but much
1802 less confusingly. The core functions are now `getpgid' and `setpgid',
1803 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1804 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1805 provided for compatibility. There is no longer an incompatible `getpgrp'
1806 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1808 * The new header file <fts.h> and suite of functions simplify programs that
1809 operate on directory trees. This code comes from 4.4 BSD.
1811 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1812 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1813 NSS scheme used in glibc.
1815 * There is a new malloc debugging hook `__memalign_hook'.
1817 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1818 `unsigned int' in <sys/types.h>. These are for compatibility only and
1819 their use is discouraged.
1821 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1822 done differently, so that it works even without GNU ld.
1824 * New function `euidaccess' checks allowed access to a file like `access',
1825 but using the effective IDs instead of the real IDs.
1827 * The time zone data files have been updated for the latest and greatest
1828 local time conventions of the countries of the world.
1830 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1831 see <dirent.h>.
1833 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1834 for formatting floating-point numbers. They are provided only for
1835 compatibility; new programs should use `sprintf' instead. There are
1836 also equivalent function for the `long double' floating-point type and
1837 all functions also exist in a reentrant form.
1839 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1840 functions for maintaining the login-record files (primarily of use to
1841 system programs such as `login'), and convenient functions for
1842 allocating and initializing a pseudo-terminal (pty) device.
1844 * Ulrich Drepper has contributed new support for System V style
1845 shared memory and IPC on systems that support it.
1847 * Ulrich Drepper has contributed several miscellaneous new functions found
1848 in System V: The `hsearch' family of functions provide an effective
1849 implementation of hash tables; `a64l' and `l64a' provide a very simple
1850 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1851 number generator.
1853 * Ulrich Drepper has contributed new reentrant counterparts for the
1854 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1856 * Ulrich Drepper has contributed new, highly-optimized versions of several
1857 string functions for the i486/Pentium family of processors.
1859 * Ulrich Drepper has updated the Linux-specific code, based largely
1860 on work done in Hongjiu Lu's version of GNU libc for Linux.
1861 The GNU library now supports Linux versions 2.0.10 and later,
1862 using the ELF object file format (i[3456]86-*-linux).
1864 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1866 * David Mosberger-Tang and Richard Henderson have ported the C library
1867 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1868 dynamic linking support for ELF/Alpha.
1870 * Richard Henderson contributed several Alpha optimized assembler function
1871 for arithmetic and string handling.
1873 * Ulrich Drepper has contributed a new set of message catalog functions to
1874 support multiple languages using the <libintl.h> interface, for use with
1875 his new package GNU gettext. Translation volunteers have contributed
1876 catalogs of the library's messages in Spanish, German, and Korean.
1878 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1879 program and the `catgets' function for reading the catalog files it
1880 creates. (The <libintl.h> interface is preferred; we include the
1881 <nl_types.h> interface using `catgets' only for source compatibility with
1882 programs already written to use it.)
1884 * New header file <values.h> gives SVID-compatible names for <limits.h>
1885 constants.
1887 * Various new macros, declarations, and small header files for compatibility
1888 with 4.4 BSD.
1890 * New function `group_member' is a convenient way to check if a process has
1891 a given effective group ID.
1893 * When using GCC 2.7 and later, the socket functions are now declared in a
1894 special way so that passing an argument of type `struct sockaddr_in *',
1895 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1896 `struct sockaddr *' type, does not generate a type-clash warning.
1898 * New function `error' declared in header file <error.h> is a convenient
1899 function for printing error messages and optionally exiting; this is the
1900 canonical function used in GNU programs. The new functions `err', `warn',
1901 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1902 doing the same thing.
1904 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1905 POSIX.2 `glob' function to do ~ and {...} expansion.
1907 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1908 `clearenv' which is used in POSIX.9 is also available.
1910 * New function `getsid' returns session ID number on systems that support it.
1912 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1913 files <db.h> and <mpool.h> provide a rich set of functions for several
1914 types of simple databases stored in memory and in files, and <ndbm.h> is
1915 an old `ndbm'-compatible interface using the `db' functions. Link with
1916 `-ldb' to get these functions.
1918 * New macro `strdupa' copies a string like `strdup', but uses local stack
1919 space from `alloca' instead of dynamic heap space from `malloc'.
1921 * New function `strnlen' is like `strlen' but searches only a given maximum
1922 number of characters for the null terminator. `stpncpy', `strndup' and
1923 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1924 function.
1926 * New function `statfs' in header <sys/statfs.h>.
1928 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1929 provide convenient functions for operating on blocks of null-terminated
1930 strings.
1932 * A new suite of functions in <utmp.h> handle all the details of reading
1933 and writing the utmp file.
1935 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1936 Thorsten Kukuk.
1938 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1939 completely POSIX compliant and also implemented the extended functionality
1940 to handle alternate digit representation and alternate era date formats.
1942 * Ulrich Drepper provided an implementation of the `strptime' function
1943 defined in XPG4.2 which transforms a string into a `struct tm' value.
1945 * Paul Eggert provided the tzselect shell script as part of the timezone
1946 code. The shell script makes it easy to select the correct timezone
1947 specification.
1949 * The implementation of the malloc family of functions is completely replaced
1950 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1951 The implementation uses the mmap function (if available) and it is
1952 optimized for the use in multi threaded programs.
1954 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1955 functions. This new functionality is usable by specifying a special
1956 salt string and it is compatible with implementation on *BSD systems.
1958 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1959 `getsubopt' to handle second level command line options, `bsd_signal'
1960 to access BSD style `signal' functionality, the obsolete `regexp' style
1961 expression matcher.
1963 * the `lchown' function is available on system which support this
1964 functionality.
1966 * The implementation of the shadow password handling function was contributed
1967 by Ulrich Drepper.
1969 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1971 * POSIX.1g support was added. The <sys/select.h> header is available,
1972 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1973 implementation of `getaddrinfo'.
1974 \f
1975 Version 1.09
1977 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1979 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1980 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1982 * The new function `daemon' from 4.4 BSD is useful for server programs that
1983 want to put themselves in the background.
1985 * Joel Sherrill has contributed support for several standalone boards that
1986 run without an operating system.
1988 * `printf', `scanf' and friends now accept a `q' type modifier for long
1989 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1991 * All of the code taken from BSD (notably most of the math and networking
1992 routines) has been updated from the BSD 4.4-Lite release.
1994 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1996 * The new functions `getdomainname' and `setdomainname' fetch or change the
1997 YP/NIS domain name. These are system calls which exist on systems which
1998 have YP (aka NIS).
2000 * The time zone data files have been updated for the latest international
2001 conventions.
2003 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2004 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2005 \f
2006 Version 1.08
2008 * The C library now includes support for Sun RPC, from Sun's free
2009 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2010 are included. (There is still no support for YP.)
2012 * Tom Quinn has contributed a port of the C library to SGI machines running
2013 Irix 4 (mips-sgi-irix4).
2015 * The new `lockf' function is a simplified interface to the locking
2016 facilities of `fcntl', included for compatibility.
2018 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2020 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2022 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2023 compatibility.
2025 * The error message printed by `assert' for a failed assertion now includes
2026 the name of the program (if using GNU ld) and the name of the calling
2027 function (with versions of GCC that support this).
2029 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2031 * The library now includes the <sys/mman.h> header file and memory
2032 management functions `mmap', `munmap', `mprotect', `msync', and
2033 `madvise', on systems that support those facilities.
2035 * The interface for `mcheck' has changed slightly: the function called to
2036 abort the program when an allocation inconsistency is detected now takes
2037 an argument that indicates the type of failure. The new function
2038 `mprobe' lets you request a consistency check for a particular block at
2039 any time (checks are normally done only when you call `free' or `realloc'
2040 on a block).
2042 * It is now possible to easily cross-compile the C library, building on one
2043 system a library to run on another machine and/or operating system. All
2044 you need to do is set the variable `HOST_CC' in `configparms' to the
2045 native compiler for programs to run on the machine you are building on (a
2046 few generator programs are used on Unix systems); set `CC' to the
2047 cross-compiler.
2049 * The new function `fexecve' (only implemented on the GNU system) executes
2050 a program file given a file descriptor already open on the file.
2051 \f
2052 Version 1.07
2054 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2055 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2057 * You can set the variable `libprefix' in `configparms' to specify a prefix
2058 to be prepended to installed library files; this makes it easy to install
2059 the GNU C library to be linked as `-lgnuc' or whatever.
2061 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2062 copies a limited number of characters from a string, and returns the
2063 address of the last character written.
2065 * You no longer need to check for whether the installed `stddef.h' is
2066 compatible with the GNU C library. configure now checks for you.
2068 * You can now define a per-stream `fileno' function to convert the
2069 stream's cookie into an integral file descriptor.
2071 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2072 allocates zero bytes of storage, and returns a unique pointer which
2073 you can pass to `realloc' or `free'. The behavior is undefined if
2074 you dereference this pointer.
2076 * The C library now runs on Sony NEWS m68k machines running either
2077 NewsOS 3 or NewsOS 4.
2079 * The new `syscall' function is a system-dependent primitive function
2080 for invoking system calls. It has the canonical behavior on Unix
2081 systems, including unreliable return values for some calls (such as
2082 `pipe', `fork' and `getppid').
2084 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2085 to `EAGAIN', which is the preferred name. On systems whose kernels
2086 use two distinct codes, the C library now translates EWOULDBLOCK to
2087 EAGAIN in every system call function.
2088 \f
2089 Version 1.06
2091 * The GNU C Library Reference Manual is now distributed with the library.
2092 `make dvi' will produce a DVI file of the printed manual.
2093 `make info' will produce Info files that you can read on line using C-h i
2094 in Emacs or the `info' program.
2095 Please send comments on the manual to bug-glibc-manual@gnu.org.
2097 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2099 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2101 * Jason Merrill has contributed a port to the Sequent Symmetry running
2102 Dynix version 3 (i386-sequent-dynix).
2104 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2105 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2107 * New function `memory_warnings' lets you arrange to get warnings when
2108 malloc is running out of memory to allocate, like Emacs gives you.
2110 * The C library now contains the relocating allocator used in Emacs 19 for
2111 its editing buffers. This allocator (ralloc) minimizes allocation
2112 overhead and fragmentation by moving allocated regions around whenever it
2113 needs to. You always refer to a ralloc'd region with a "handle" (a
2114 pointer to a pointer--an object of type `void **').
2116 * There is a new `printf' format: `%m' gives you the string corresponding
2117 to the error code in `errno'.
2119 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2120 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2121 pass, the `a' modifier says to fill in a `char **' you pass with a
2122 malloc'd string.
2124 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2125 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2126 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2128 * `mkstemp' is a traditional Unix function to atomically create and open a
2129 uniquely-named temporary file.
2130 \f
2131 Version 1.05
2133 * The standard location for the file that says what the local timezone is
2134 has changed again. It is now `/usr/local/etc/localtime' (or more
2135 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2137 * The distribution no longer contains any files with names longer than 14
2138 characters.
2140 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2141 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2143 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2144 \f
2145 Version 1.04
2147 * The configuration process has changed quite a bit. The `configure'
2148 script is now used just like the configuration scripts for other GNU
2149 packages. The `sysdeps' directory hierarchy is much rearranged.
2150 The file `INSTALL' explains the new scheme in detail.
2152 * The header files no longer need to be processed into ANSI C and
2153 traditional C versions. There is just one set of files to install, and
2154 it will work with ANSI or old C compilers (including `gcc -traditional').
2156 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2157 MIPS DECStation running Ultrix 4.
2159 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2160 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2161 made itself into a shared library.
2163 * Yet further improved support for the i386, running 4.3 BSD-like systems
2164 (such as Mach 3 with the Unix single-server), or System V.
2166 * New function `strncasecmp' to do case-insensitive string comparison
2167 with limited length.
2169 * New function `strsep' is a reentrant alternative to `strtok'.
2171 * New functions `scandir' and `alphasort' for searching directories.
2173 * New function `setenv' is a better interface to `putenv'.
2175 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2176 function for traversing a directory tree.
2178 * The GNU obstack package is now also part of the C library.
2179 The new function `open_obstack_stream' creates a stdio stream that
2180 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2181 formatted output directly to an obstack.
2183 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2184 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2186 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2188 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2189 things to your strings.
2191 * There are some new test programs: test-fseek, testmb, and testrand.
2193 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2194 These ports are not finished, but are a good starting place for really
2195 supporting those systems.
2197 * `/etc/localtime' is now the standard location for the file that says what
2198 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2199 This follows the general principle that `/etc' is the place for all local
2200 configuration files.
2202 * The C library header files now use `extern "C"' when used by the C++
2203 compiler, so the C library should now work with C++ code.
2205 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2206 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2207 in <strings.h>.)
2209 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2210 function which uses the `merge sort' algorithm, and is said to be
2211 significantly faster than the old GNU `qsort' function. Merge sort is
2212 now the standard `qsort' function. The new algorithm can require a lot
2213 of temporary storage; so, the old sorting function is called when the
2214 required storage is not available.
2216 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2217 provides the Unix `crypt' function, plus some other entry points.
2219 * The code and header files taken from 4.4 BSD have been updated with the
2220 latest files released from Berkeley.
2221 \f
2222 ----------------------------------------------------------------------
2223 Copyright information:
2225 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2227 Permission is granted to anyone to make or distribute verbatim copies
2228 of this document as received, in any medium, provided that the
2229 copyright notice and this permission notice are preserved,
2230 thus giving the recipient permission to redistribute in turn.
2232 Permission is granted to distribute modified versions
2233 of this document, or of portions of it,
2234 under the above conditions, provided also that they
2235 carry prominent notices stating who last changed them.
2236 \f
2237 Local variables:
2238 version-control: never
2239 fill-column: 76
2240 End: