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1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2012 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sources.redhat.com/bugzilla/>
6 using `glibc' in the "product" field.
7 \f
8 Version 2.17
10 * The following bugs are resolved with this release:
12 1349, 3479, 5400, 6778, 6808, 9685, 9914, 11607, 13412, 13717, 13696,
13 13939, 13966, 14042, 14090, 14166, 14150, 14151, 14154, 14157, 14166,
14 14173, 14195, 14237, 14252, 14283, 14298, 14303, 14307, 14328, 14331,
15 14336, 14337, 14347, 14349, 14459, 14476, 14505, 14510, 14516, 14519,
16 14532, 14538, 14544
18 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
19 Optimized versions of memcpy, memset, and memcmp added for System z10 and
20 zEnterprise z196.
21 Implemented by Andreas Krebbel.
23 * The new function secure_getenv allows secure access to the environment,
24 returning NULL if running in a SUID/SGID process. This function replaces
25 the internal function __secure_getenv.
27 * SystemTap static probes have been added into the dynamic linker.
28 Implemented by Gary Benson.
30 * Optimizations of string functions strstr, strcasestr and memmem.
31 Implemented by Maxim Kuvyrkov.
33 * The minimum Linux kernel version that this version of the GNU C Library
34 can be used with is 2.6.16.
36 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
37 powerpc POWER7. Implemented by Will Schmidt.
39 * New configure option --disable-nscd builds the C library such that it
40 never attempts to contact the Name Service Caching Daemon (nscd).
41 New configure option --disable-build-nscd avoids building nscd itself;
42 this is the default if --disable-nscd is used.
44 * The ttyname and ttyname_r functions on Linux now fall back to searching for
45 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
46 allows creation of chroots without the procfs mounted on /proc.
48 \f
49 Version 2.16
51 * The following bugs are resolved with this release:
53 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
54 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
55 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
56 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
57 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
58 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
59 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
60 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
61 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
62 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
63 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
64 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
65 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
66 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
67 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
68 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
69 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
70 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
71 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
72 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
73 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
74 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
75 14278,
77 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
78 configuring glibc with:
79 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
80 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
81 Implemented by H.J. Lu.
83 * ISO C11 support:
85 + define static_assert
87 + do not declare gets
89 + declare at_quick_exit and quick_exit also for ISO C11
91 + aligned_alloc. NB: The code is deliberately allows the size parameter
92 to not be a multiple of the alignment. This is a moronic requirement
93 in the standard but it is only a requirement on the caller, not the
94 implementation.
96 + timespec_get added
98 + uchar.h support added
100 + CMPLX, CMPLXF, CMPLXL added
102 Implemented by Ulrich Drepper.
104 * Support for the IA-64 has been moved to ports.
106 * Remove support for anything but ELF binary format
108 * Checking versions of poll, ppoll added.
109 Implemented by Ulrich Drepper.
111 * More generic and 64-bit performance optimizations to math functions.
112 Implemented by Ulrich Drepper.
114 * New configure option --enable-obsolete-rpc makes the deprecated RPC
115 headers and functions available at compile time as they were before
116 version 2.14. This option will be removed at some time in the future
117 after the TI-RPC library becomes fully sufficient for the needs of
118 existing applications.
120 * Compatibility code for Linux kernel versions before 2.4 has been removed.
121 Note that glibc is not expected to work with any Linux kernel version
122 before 2.6.
124 * New header <sys/auxv.h> and function getauxval allowing easy access to
125 the AT_* key-value pairs passed from the Linux kernel. The header also
126 defines the HWCAP_* bits associated with the AT_HWCAP key.
128 * New locales: mag_IN
130 * New configure option --enable-systemtap builds SystemTap static probes
131 into libc for setjmp and longjmp and into libpthread for various operations.
132 So far the setjmp/longjmp probes and some of the libpthread probes are
133 provided only for i*86 and x86_64.
134 Implemented by Roland McGrath and Rayson Ho.
136 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
138 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
139 and Will Schmidt.
141 * More optimized functions for SPARC. Implemented by David S. Miller.
143 * Improved support for cross-compilation, especially bootstrap builds
144 without a previously built glibc.
146 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
147 Chris Metcalf from Tilera.
149 * Support for the old ARM ABI has been removed from ports. Only the EABI is
150 now supported for ARM processors.
152 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
153 as the name of the dynamic linker, to distinguish it from the
154 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
156 * Support for CRIS has been removed from ports.
158 * A new class of installed header has been documented for low-level
159 platform-specific functionality. PowerPC added the first instance with a
160 function to provide time base register access. Contributed by Tulio
161 Magno Quites Machado Filho.
163 * ix86 configurations now install header files that are consistent with
164 what x86-64 configurations install. These same header files can be used
165 for -m32, -m64, or -mx32 builds.
166 Contributed by H.J. Lu.
168 * Math library bug fixes. A thorough audit of all open math library bugs was
169 conducted by Joseph Myers. Significant progress was made on many math
170 library bugs resulting in more accurate exceptions and function results.
171 Many thanks to all those that contributed including Andreas Jaeger for his
172 patch review and work on the x87 trigonometric instruction issues.
174 * Timezone data is no longer installed. Timezone-related binaries and scripts
175 will continue to be installed. Users should obtain their timezone data from
176 their distribution provider or from the tzdata package at
177 <ftp://munnari.oz.au/pub/>.
178 \f
179 Version 2.15
181 * The following bugs are resolved with this release:
183 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
184 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
185 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
186 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
187 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
188 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
189 13484, 13506, 13515, 13523, 13524, 13538, 13540
191 * New program pldd to list loaded object of a process
192 Implemented by Ulrich Drepper.
194 * Add nss_db support back to glibc. No more dependency on Berkeley db
195 and support for initgroups lookups.
196 Implemented by Ulrich Drepper.
198 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
199 Contributed by HJ Lu.
201 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
202 Contributed by HJ Lu.
204 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
205 on x86-32 and x86-64.
206 Contributed by Liubov Dmitrieva.
208 * Optimized strchr and strrchr for SSE on x86-32.
209 Contributed by Liubov Dmitrieva.
211 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
212 for x86-64 and x86-32.
213 Contributed by Liubov Dmitrieva.
215 * New interfaces: scandirat, scandirat64
216 Implemented by Ulrich Drepper.
218 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
219 Implemented by Ulrich Drepper.
221 * nscd now also caches the netgroup database.
222 Implemented by Ulrich Drepper.
224 * Integrate libm with gcc's -ffinite-math-only option.
225 Implemented by Ulrich Drepper.
227 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
228 to math functions. Implemented by Ulrich Drepper.
230 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
231 Implemented by Ulrich Drepper.
233 * New Linux interfaces: process_vm_readv, process_vm_writev
235 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
236 Implemented by Ulrich Drepper.
238 * Optimized nearbyint and strcasecmp for PPC.
239 Implemented by Adhemerval Zanella.
241 * New locales: bho_IN, unm_US, es_CU, ta_LK
242 \f
243 Version 2.14
245 * The following bugs are resolved with this release:
247 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
248 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
249 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
250 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
251 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
252 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
253 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
254 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
255 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
256 12795, 12811, 12813, 12814, 12841
258 * The RPC implementation in libc is obsoleted. Old programs keep working
259 but new programs cannot be linked with the routines in libc anymore.
260 Programs in need of RPC functionality must be linked against TI-RPC.
261 The TI-RPC implementation is IPv6 enabled and there are other benefits.
263 Visible changes of this change include (obviously) the inability to link
264 programs using RPC functions without referencing the TI-RPC library and the
265 removal of the RPC headers from the glibc headers.
266 Implemented by Ulrich Drepper.
268 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
269 syncfs, setns, sendmmsg
271 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
272 yue_HK, lij_IT, mhr_RU
274 * New encodings: CP770, CP771, CP772, CP773, CP774
276 * New program sotruss to trace calls through PLTs
277 Implemented by Ulrich Drepper.
279 * The malloc hook implementation is marked deprecated and will be removed
280 from the default implementation in the next version. The design never
281 worked ever since the introduction of threads. Even programs which do
282 not create threads themselves can use multiple threads created internally.
283 \f
284 Version 2.13
286 * The following bugs are resolved with this release:
288 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
289 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
290 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
291 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
292 12378, 12394, 12397
294 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
296 * POWER7 optimizations: memset, memcmp, strncmp
298 * New optimized string functions for x86-64: strnlen (SSE2),
299 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
300 Implemented by Ulrich Drepper.
301 \f
302 Version 2.12
304 * The following bugs are resolved with this release:
306 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
307 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
308 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
309 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
310 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
311 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
312 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
313 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
315 * New interfaces: pthread_getname_np, pthread_setname_np
317 * New Linux interface: recvmmsg
319 * STT_GNU_IFUNC implemented for Sparc by David Miller.
321 * The dynamic linker now recognizes supported ABI versions from the
322 EI_ABIVERSION field in the ELF header.
323 Implemented by Ulrich Drepper.
325 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
326 will not be used to fill in password fields in the passwd.byname replies.
327 Instead it is used to synthesize the shadow.byname table, should it be
328 missing. This is a useful mode in some installations involving Solaris.
329 Implemented by Ulrich Drepper.
331 * New locales: kok_IN, sq_MK, cv_RU
332 \f
333 Version 2.11
335 * The following bugs are resolved with this release:
337 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
338 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
339 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
340 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
341 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
342 10789, 10817, 10823, 10840, 10847
344 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
345 mkostemps64
346 Implemented by Ulrich Drepper.
348 * Checking version of longjmp added that fails if an uninitialized stack
349 frame would be created. Implemented by Ulrich Drepper.
351 * STT_GNU_IFUNC is now supported in static executables.
352 Implemented by H.J. Lu.
354 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
356 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
357 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
358 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
359 Contributed by H.J. Lu.
361 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
362 Implemented by Ulrich Drepper.
364 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
365 strstr, strcasestr.
366 Contributed by H.J. Lu.
368 * Support for fma instruction in AVX on x86-64.
369 Implemented by H.J. Lu and Ulrich Drepper.
371 * AVX support in x86-64 auditing support in ld.so.
372 Implemented by H.J. Lu.
374 * STB_GNU_UNIQUE support added.
375 Implemented by Ulrich Drepper.
377 * Implement second fallback mode for optimized DNS lookup for even more
378 broken environments. If two requests from the same port are not
379 handled correctly close the socket and open a new one before sending
380 the second request. The 'single-request-reopen' option in /etc/resolv.conf
381 can be used to select this mode right away, instead of rediscovering the
382 necessity is every process again.
383 Implemented by Ulrich Drepper.
385 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
386 Implemented by Adam Tkac.
388 * Optimized iconv conversions for S390x.
389 Implemented by Andreas Krebbel.
391 * Using condvars with PI mutexes is now more efficient due to kernel
392 support for requeueing to PI futexes. NPTL support added for x86-64.
393 Implemented by Ulrich Drepper.
395 * New locales: ps_AF, my_MM
396 \f
397 Version 2.10
399 * The following bugs are resolved with this release:
401 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
402 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
403 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
404 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
405 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
407 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
408 Implemented by Ulrich Drepper.
410 * New Linux interfaces: accept4, fallocate, fallocate64.
411 Implemented by Ulrich Drepper.
413 * Correct declarations of string function when used in C++ code. This
414 could lead to compile errors for invalid C++ code.
416 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
417 now in POSIX.
419 * New POSIX 2008 interface: psiginfo
420 Implemented by Ulrich Drepper.
422 * New ISO C++1x interfaces: quick_exit, at_quick_exit
423 Implemented by Ulrich Drepper.
425 * Support for selecting between multiple function definitions at runtime
426 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
428 * The libcrypt library can now use the hash function implementations in
429 NSS. Implemented by Ulrich Drepper.
431 * The malloc implementation can be compiled to be less memory efficient
432 but higher performing in multi-threaded programs.
433 Implemented by Ulrich Drepper.
435 * New locales: nan_TW@latin, ks_IN
437 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
438 Implemented by Ulrich Drepper.
440 * Extended printf hook support. It is possible to use user-defined types
441 and extend existing format specifiers.
442 Implemented by Ulrich Drepper.
444 * Handling for group shadow files has been added.
445 Implemented by Ulrich Drepper.
447 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
448 servers (the case, e.g., for some people using the built-in DNS
449 server in ADSL modems/routers). There is a once-per-process timeout
450 in case of a broken server. To avoid it, users can run nscd or put
451 'options single-request' in /etc/resolv.conf.
452 Implemented by Ulrich Drepper.
453 \f
454 Version 2.9
456 * The following bugs are resolved with this release:
458 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
459 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
460 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
461 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
462 6968, 6974, 6980, 6995, 7008, 7009, 7029
464 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
465 up at the same time. Implemented by Ulrich Drepper.
467 * TLS descriptors for LD and GD on x86 and x86-64.
468 Implemented by Alexandre Oliva.
470 * getaddrinfo now handles DCCP and UDPlite.
471 Implemented by Ulrich Drepper.
473 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
474 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
475 Implemented by Ulrich Drepper.
477 * New implementation of memmem, strstr, and strcasestr which is O(n).
478 Implemented by Eric Blake.
480 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
482 * Implement "e" option for popen to open file descriptor with the
483 close-on-exec flag set. Implemented by Ulrich Drepper.
485 * Implement "b" mode for fmemopen. In this mode writes writes don't
486 implicitly add a NUL byte and seeks from the end of the buffer really
487 use the buffer end, not the string length as the basis.
488 Implemented by Ulrich Drepper.
490 * Many functions, exported and internal, now atomically set the close-on-exec
491 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
493 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
494 Sinhala)
495 Implemented by Pravin Satpute.
497 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
498 \f
499 Version 2.8
501 * The following bugs are resolved with this release:
503 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
504 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
505 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
506 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
507 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
508 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
509 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
511 * New locales: bo_CN, bo_IN, shs_CA.
513 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
515 * Sorting rules for some Indian languages (Devanagari and Gujarati).
516 Implemented by Pravin Satpute.
518 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
520 * nscd caches now all timeouts for DNS entries
521 Implemented by Ulrich Drepper.
523 * nscd is more efficient and wakes up less often.
524 Implemented by Ulrich Drepper.
526 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
527 vdprintf, and obstack_vprintf.
528 Implemented by Jakub Jelinek.
530 * Faster memset for x86-64.
531 Implemented by Harsha Jagasia and H.J. Lu.
533 * Faster memcpy on x86.
534 Implemented by Ulrich Drepper.
536 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
537 Implemented by Ulrich Drepper.
539 * Faster sqrt and sqrtf implemention for some PPC variants.
540 Implemented by Steven Munroe.
541 \f
542 Version 2.7
544 * The following bugs are resolved with this release:
546 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
547 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
548 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
549 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
550 5071, 5103, 5104, 5112, 5113, 5184, 5186
552 * More checking functions: fread, fread_unlocked, open*, mq_open.
553 Implemented by Jakub Jelinek and Ulrich Drepper.
555 * Extend fortification to C++. Implemented by Jakub Jelinek.
557 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
558 by not recognizing 'a' as a modifier when those specs are requested.
559 Implemented by Jakub Jelinek.
561 * PPC optimizations to math and string functions.
562 Implemented by Steven Munroe.
564 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
565 options to be passed. Implemented by Ulrich Drepper.
567 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
569 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
570 Implemented by Ulrich Drepper.
572 * Handle private futexes in the NPTL implementation.
573 Implemented by Jakub Jelinek and Ulrich Drepper.
575 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
576 Implemented by Roland McGrath and Ulrich Drepper.
578 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
580 * SHA-256 and SHA-512 based password encryption.
581 Implemented by Ulrich Drepper.
583 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
584 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
585 yo_NG.
587 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
588 Implemented by Ulrich Drepper.
589 \f
590 Version 2.6
592 * The following bugs are resolved with this release:
594 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
595 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
596 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
597 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
598 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
599 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
600 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
601 4702, 4858
603 * New Linux interfaces: epoll_pwait, sched_getcpu.
605 * New generic interfaces: strerror_l.
607 * nscd can now cache the services database. Implemented by Ulrich Drepper.
608 \f
609 Version 2.5
611 * The following bugs are resolved with this release:
613 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
614 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
615 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
616 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
617 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
618 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
619 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
620 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
621 3225, 3251, 3252, 3253, 3273
623 * For Linux, the sorting of addresses returned by getaddrinfo now also
624 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
625 Implemented by Ulrich Drepper.
627 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
628 Implemented by Ulrich Drepper.
630 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
632 * New iconv module for MIK. Contributed by Alexander Shopov.
634 * For sites with broken group and/or passwd database, the auto-propagate
635 option of nscd can prevent creating ID lookup entries from the results
636 of a name lookup and vice versa. This usually is no problem but some
637 site might have problems with the default behavior.
638 Implemented by Ulrich Drepper.
640 * Iterating over entire database in NIS can be slow. With the
641 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
642 to trade time for memory. The entire database will be read at once.
643 Implemented by Ulrich Drepper.
645 * The interfaces introduced in RFC 3542 have been implemented by
646 Ulrich Drepper.
648 * Support for the new ELF hash table format was added by Ulrich Drepper.
650 * Support for priority inheritance mutexes added by Jakub Jelinek and
651 Ulrich Drepper.
653 * Support for priority protected mutexes added by Jakub Jelinek.
655 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
656 or_IN, csb_PL, fy_NL, sr_ME.
657 \f
658 Version 2.4
660 * More overflow detection functions.
662 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
663 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
665 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
666 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
667 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
668 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
669 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
670 by Masahide Washizawa.
672 * It is now possible to install audit libraries for the dynamic linker using
673 LD_AUDIT. Implemented by Ulrich Drepper.
675 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
676 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
677 For a libc and libpthread that works well on Linux 2.4 kernels, we
678 recommend using the stable 2.3 branch.
680 * The new function open_wmemstream acts like open_memstream,
681 but uses a wchar_t wide character buffer.
683 * The new function ppoll is an improved version of poll, similar to pselect.
685 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
686 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
687 renameat, unlinkat, linkat, symlinkat, readlinkat.
689 * New Linux kernel system calls: unshare,
690 inotify_init, inotify_add_watch, inotify_rm_watch.
692 * The euidaccess function is now also known by the alias eaccess,
693 for compatibility with some other systems.
695 * Timezone data updated to 2006b version.
696 \f
697 Version 2.3.6
699 * The following bugs are resolved with this release:
701 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
702 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
703 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
704 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
705 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
706 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
708 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
710 * As of this release, GCC 4 can be used to compile the C Library.
712 * Timezone data updated to 2005m version.
713 \f
714 Version 2.3.5
716 * The following bugs are resolved with this release:
718 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
719 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
720 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
721 777, 787, 821, 822, 823, 825
723 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
724 \f
725 Version 2.3.4
727 * Support for RFC 3678. Real implementations exist only for Linux so far.
728 Implemented by Ulrich Drepper.
730 * nscd can now cache entries persistently. Expiring entries are reloaded.
731 For speedups the cache can be shared in memory with client processes.
732 Implemented by Ulrich Drepper.
734 * nscd can now perform SELinux checks.
735 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
737 * getaddrinfo queries are now cached. Canonical name lookup is performed
738 efficiently.
739 Implemented by Ulrich Drepper.
741 * The nothrow function attribute is used when headers are used by gcc when
742 compiling C code. This can avoid significant amounts of exception
743 handling data.
745 * The malloc functions perform more error checking and are stricter when
746 it comes to reacting on errors. The default action is to terminate
747 the process after showing an error message. Implemented by Ulrich Drepper.
749 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
750 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
752 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
753 namespaces using the new function dlmopen(). This feature is of course,
754 like most other dynamic loading functionality, not available in statically
755 linked applications. Implemented by Ulrich Drepper.
757 * Low-overhead boundary checking variants of string and some stdio functions
758 were added. These are to be used in conjunction with a gcc patch by
759 Jakub Jelinek which adds calls to these functions if possible.
760 Implemented by Jakub Jelinek and Ulrich Drepper.
762 * Old code for several operating systems and machine architectures that
763 have not been in working condition in a long time have been removed from
764 the main source tree maintained by the GNU C Library's maintainers.
765 These files are now reside in the separate `ports' source module
766 that is usable as an add-on when building the library.
767 \f
768 Version 2.3.3
770 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
771 interrogate the dynamic linker, compatible with the Solaris interface.
773 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
774 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
776 * getifaddrs now uses the netlink interface on Linux to get its information.
777 Implemented by Thorsten Kukuk.
779 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
780 Implemented by Ulrich Drepper.
782 * support for non-executable stacks on x86 has been added. Changes mostly
783 by Roland McGrath.
785 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
786 and Ulrich Drepper.
788 * getaddrinfo now performs destination address selection according to
789 RFC 3484.
790 \f
791 Version 2.3.2
793 * Thread-safe interfaces for many functions that access locale data
794 were added in version 2.3, but these features were omitted from NEWS.
795 Many functions have variants with an `_l' suffix that take a `locale_t'
796 object as a parameter rather than consulting the current locale.
797 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
798 create and maintain `locale_t' objects. Additionally, the new function
799 `uselocale' sets "the current locale" (as used by functions not so
800 parameterized) set for an individual thread. These features were added
801 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
803 * The functions getresuid, getresgid, setresuid, and setresgid, which
804 have long been available on Linux, are now declared in <unistd.h>
805 and are now also available on the Hurd.
807 * ELF thread-local storage support (TLS) now works on x86-64.
809 * The new dynamic string token $LIB is expanded in shared library names.
810 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
812 * Aldy Hernandez contributed complete software floating point support for
813 PowerPC machines with no FPU.
815 * fexecve is implemented on Linux.
817 * The `btowc' function should work at least twice as fast due to
818 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
820 * With approriate thread add-ons cancelable functions are now implemented
821 in libc.so as well. No need to call the function in libpthread. This
822 change allowed to finally disable the incorrect and expensive handling
823 of weak definition in ld.so.
825 * Yet more PLT entries in libc.so have been removed. We finally arrived
826 at the bare minimum. Startup times improved appropriately.
828 * Support for the new Linux/x86 system call interface was added. The
829 AT_SYSINFO auxiliary vector entry is recognized and handled.
830 \f
831 Version 2.3
833 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
834 charsets.
836 * iconv (the program and the interface) now accepts empty names (excluding
837 options like //TRANSLIT) to mean "use charset of current locale".
839 * localedef can now transliterate characters in strings which are not in
840 the provided charmap. The information from the input locale is used.
842 * Prelinking support was added for ELF targets. This requires additional
843 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
845 * Read-only stdio streams now use mmap to speed up operation by eliminating
846 copying and buffer underflows. To use add 'm' to the mode string of
847 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
849 * The malloc functions were completely rewritten by Wolfram Gloger based
850 on Doug Lea's malloc-2.7.0.c.
852 * Isamu Hasegawa contributed a completely new and POSIX-conformant
853 implementation of regex.
855 * Bruno Haible upgraded the iconv and locale implementation to support
856 Unicode 3.2.
858 * Contents of the LC_* and LANG environment variables in the CEN style are
859 not recognized anymore. It never was used. Change by Ulrich Drepper.
861 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
862 thread-local storage (TLS) ABI on some platforms.
863 Changes by Ulrich Drepper. SH support by Kaz Kojima.
865 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
866 EUC-JISX0213, and TSCII.
868 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
869 BSD-compatible interface for getting all network interface addresses.
870 Implementation for IPv4 by Roland McGrath.
872 * Loading of locale data is faster due to the introduction of a locale
873 archive. Implemented by Roland McGrath and Ulrich Drepper.
875 * Startup times are significantly reduced by not using exported functions
876 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
877 and Ulrich Drepper.
879 * Steven Munroe contributed a port to PowerPC64/Linux.
880 \f
881 Version 2.2.6
883 * The Hurd now uses the GNU libio implementation of stdio rather than the
884 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
886 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
887 with the same behavior as the Linux system call of the same name.
888 \f
889 Version 2.2.5
891 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
892 128-bit long double format.
894 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
895 IBM1161, and IBM1162 charsets.
897 * Andreas Jaeger contributed a port to x86-64/Linux.
899 * Peter Bruin contributed a port to PowerPC/Hurd.
901 * libc functions using I/O streams now can handle wide-oriented streams
902 as well.
904 * optimizations in the dynamic linker. Binaries created by recent binutils
905 versions start up quicker due to reduced time spent on relocations.
907 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
908 \f
909 Version 2.2.4
911 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
912 asinh, atanh, j0 for the 128-bit long double format.
914 * Bruno Haible updated all the code handling Unicode in some form to
915 support Unicode 3.1.
917 * Speed of regex for single-byte locales is back to previous levels.
918 Patch by Isamu Hasegawa.
920 * Alpha, SPARC, and IA-64 now also using floating stacks.
922 * Startup time of internationalized applications greatly improved through
923 iconv cache. Use iconvconfig to generate the cache file.
924 Contributed by Ulrich Drepper.
926 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
927 severe performance problems. Patch by David Mosberger.
929 * The Hurd port got a lot more functionality like AIO, various stdio
930 extensions, etc. Mainly done by Roland McGrath.
932 * mtrace can now lookup symbols in shared libraries.
933 \f
934 Version 2.2.3
936 * Intel's IA-64 math library is largely integrated. It provides fast and
937 accurate implementatations for most basic and standard math functions
938 in float, double, and long double format.
940 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
941 and asin for the 96-bit long double format and asin, log, tan for the
942 128-bit long double format.
944 * The beginning of a last-bit accurate math library by IBM Haifa were added.
945 The basic double functions exist today. Contributed by Abraham Ziv
946 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
947 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
949 * An asynchronous name lookup library was added. The interface is designed
950 after POSIX AIO. The proposal was circulated beforehand to get comments.
951 No negative ones came in. Implemented by Ulrich Drepper.
953 * Port to S390/64bit contributed by Martin Schwidefsky
954 <schwidefsky@de.ibm.com>.
956 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
957 of functions for Linux/IA-64.
959 * The RPC code is now thread safe. Threads can now use the same service
960 of different services at the same time. Patch by Eric Norum
961 <eric.norum@usask.ca> with some help by Ulrich Drepper.
963 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
964 family of functions for Linux/S390.
966 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
967 of functions for Linux/x86.
969 * Port to Linux/CRIS contributed by Axis Communications.
970 \f
971 Version 2.2.2
973 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
974 we can now check for namespace violations and missing declarations. The
975 result is that almost all headers are now Unix-compliant (as defined in
976 the upcoming XPG6). The negative side is that some programs might need
977 corrections, too, if they depend on the incorrect form of the headers in
978 previous versions which defined too many symbols and included too many
979 other headers.
981 * regex now handles multibyte character sets correctly.
982 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
984 * iconv (the program) does now conform to the upcoming XPG6 and handles
985 charmaps. Instead of the charset names the path of charmaps can be
986 provided and the conversion happens based on this data.
987 Contributed by Ulrich Drepper.
989 * The locale program now provides detailed information about the installed
990 locales. While
992 locale -a
994 only lists the names of the supported locales
996 locale -a --verbose
998 provides details such as country, language, and codeset name.
999 Contributed by Ulrich Drepper.
1000 \f
1001 Version 2.2.1
1003 * The gencat program now parses the input file according to the charset
1004 selected by the LC_CTYPE category. This is important for stateful
1005 character sets. To make generating catalogs easier there is a way
1006 to overwrite the charset selected by the locale: before the first
1007 message or $ quote line the catalog can contain a line like
1009 $ codeset=ISO-8859-2
1011 to select the charset (ISO-8859-2 in this case).
1013 Implemented by Shinya Hanataka and Ulrich Drepper.
1015 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1016 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1017 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1019 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1020 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1022 * The LANGUAGE environment variable is now ignored unless the locale is
1023 changed from the default "C" locale.
1025 * The usual bug fixes.
1026 \f
1027 Version 2.2
1029 * Greg McGary added runtime support for bounds checking using gcc's
1030 new -fbounded-pointers option. ix86 target is complete. PowerPC
1031 is in progress.
1033 * Thorsten Kukuk added secure mode support to nscd.
1035 * The Berkeley db libraries have been removed.
1037 Related, the nss_db module is now in a separate package since it
1038 obviously requires a database library being available.
1040 * Wide character I/O streams implemented by Ulrich Drepper.
1042 * Functions from the extended socket API added by Ulrich Drepper.
1044 * Functions feenableexcept and fedisableexcept to control the
1045 behaviour of individual exceptions have been added by Andreas Jaeger.
1047 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1049 * The resolver code has been updated from bind 8.2.3-T5B which supports
1050 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1051 and Mark Kettenis.
1053 This change could in some situations effect backward compatibility. Since
1054 now `_res' is a thread-local instead of a global variable, modifying it
1055 in one thread does not have any effect in other threads.
1057 The resolver library was also extended to allow IPv6 as the transport
1058 protocol for the requests. This work was done by Stig Venaas.
1060 * Compatibility code for K&R C compilers has been removed from the
1061 header files. A ISO C compiler is needed to use the library
1062 (conforming to either C89 or C99 standard).
1064 * Complete rewrite of the localedef program to support multibyte character
1065 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1066 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1067 Implemented by Ulrich Drepper.
1069 Bruno Haible significantly improved the generation and use of the data
1070 structures for the wide character tables.
1072 * Plural handling in gettext implemented by Ulrich Drepper.
1074 * The utmp daemon has been removed.
1076 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1078 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1079 and Yutaka Niibe.
1081 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1083 * POSIX barriers implemented by Kaz Kylheku.
1085 * POSIX spawn function family implemented by Ulrich Drepper.
1087 * POSIX spinlocks are now available.
1089 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1091 * the configure option --enable-kernel=X.Y.Z allows to strip out
1092 compatibility for kernel versions before X.Y.Z. This is currently only
1093 implemented for Linux.
1095 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1096 field sin6_scope_id. This means that all programs using IPv6 should be
1097 recompiled. Don't expect binary compatibility with previous glibc
1098 versions.
1100 * various conversion modules for IBM character sets contributed by
1101 Masahide Washizawa.
1103 * IA-64 port by Jes Sorensen and HJ Lu.
1104 \f
1105 Version 2.1.3
1107 * bug fixes
1109 \f
1110 Version 2.1.2
1112 * bug fixes
1114 \f
1115 Version 2.1.1
1117 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1119 * New xdr functions are added; some rpc functions are now 64bit clean.
1121 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1123 * Fixed known incompatibilities with glibc 2.0.
1125 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1127 * Optimized a number of functions (especially the ELF dynamic loader).
1129 * Update timezone data files.
1131 * lots of charmaps corrections
1133 * some new locale definitions and charmaps
1135 \f
1136 Version 2.1
1138 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1139 conform to POSIX member type requirements. Symbol versions have been
1140 adjusted as needed within the library, and for direct use by applications,
1141 but there is potential for problems if third-party libraries use
1142 struct timeval as part of their interface. This does not present
1143 a problem for X and other "essential" system libraries.
1145 * An additional locale model to support C++ Standard Library locale
1146 model and probably more was implemented by Ulrich Drepper.
1148 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1149 symbol level.
1151 * Miles Bader provided the `argp' function family to support hierachical
1152 command line argument parsing, layered on top of getopt.
1154 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1156 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1157 numbers.
1159 * scanf recognizes the %a and %A format for scanning floating point numbers.
1161 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1162 information and interfaces for the available integer types.
1164 * about 130 new math functions were added to implement the ISO C9x math
1165 library.
1167 * the new header <complex.h> contains definitions of the complex math
1168 functions from ISO C 9X.
1170 * the new header <tgmath.h> defines generic macros to use complex or
1171 real valued functions.
1173 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1175 * Andreas Jaeger provided a test suite for the math library.
1177 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1179 * Ulrich Drepper added character set conversion functions (iconv).
1181 * Optimized string functions have been added.
1183 * The localedata addon is now part of glibc.
1185 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1187 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1188 daemon for NSS (nscd).
1190 Missing a better place here are some numbers on improvements. Under
1191 Linux 2.1.125 un-tar-ing the kernel sources takes
1193 user system wall
1195 using local files 12.19s 6.88s 22.91s
1197 using NIS 13.92s 8.91s 26.34s
1199 using NIS & nscd 10.37s 7.34s 25.30s
1201 using NIS+ 27.57s 30.37s 640.46s
1203 using NIS+ & nscd 10.25s 7.83s 26.51s
1205 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1207 Keep in mind that non-namelookup related operations dominate above times.
1208 It was just a common complain that using NIS+ unpacking the kernel is
1209 horribly slow.
1211 [1] The old nscd implementation is not available anymore since it was
1212 distributed with glibc up to version 2.0.98 and thus is now replaced.
1214 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1216 * Mark Kettenis provided a Hesiod NSS module.
1218 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1219 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1221 * rcmd can now handle netgroups (Dick Streefland).
1223 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1224 Bambrough.
1226 * Support for the IPv6 protocol has been added to the socket API, as per the
1227 latest draft standards.
1229 * Support for Linux 2.2 has been added.
1231 * Interface changes relative to the latest 2.0.x release:
1232 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1233 addseverity NEW: Unix98
1234 alphasort64 NEW: LFS
1235 argp_err_exit_status NEW: argp, GNU ext
1236 argp_error NEW: argp, GNU ext
1237 argp_failure NEW: argp, GNU ext
1238 argp_help NEW: argp, GNU ext
1239 argp_parse NEW: argp, GNU ext
1240 argp_program_bug_address NEW: argp, GNU ext
1241 argp_program_version NEW: argp, GNU ext
1242 argp_program_version_hook NEW: argp, GNU ext
1243 argp_state_help NEW: argp, GNU ext
1244 argp_usage NEW: argp, GNU ext
1245 authdes_create NEW: Secure RPC
1246 authdes_getucred NEW: Secure RPC
1247 authdes_pk_create NEW: Secure RPC
1248 backtrace NEW: GNU ext.
1249 backtrace_symbols NEW: GNU ext.
1250 backtrace_symbols_fd NEW: GNU ext.
1251 cacos NEW: ISO C 9x
1252 cacosf NEW: ISO C 9x
1253 cacosh NEW: ISO C 9x
1254 cacoshf NEW: ISO C 9x
1255 cacoshl NEW: ISO C 9x
1256 cacosl NEW: ISO C 9x
1257 capget NEW: kernel
1258 capset NEW: kernel
1259 carg NEW: ISO C 9x
1260 cargf NEW: ISO C 9x
1261 cargl NEW: ISO C 9x
1262 casin NEW: ISO C 9x
1263 casinf NEW: ISO C 9x
1264 casinh NEW: ISO C 9x
1265 casinhf NEW: ISO C 9x
1266 casinhl NEW: ISO C 9x
1267 casinl NEW: ISO C 9x
1268 catan NEW: ISO C 9x
1269 catanf NEW: ISO C 9x
1270 catanh NEW: ISO C 9x
1271 catanhf NEW: ISO C 9x
1272 catanhl NEW: ISO C 9x
1273 catanl NEW: ISO C 9x
1274 cbc_crypt NEW: Secure RPC
1275 ccos NEW: ISO C 9x
1276 ccosf NEW: ISO C 9x
1277 ccosh NEW: ISO C 9x
1278 ccoshf NEW: ISO C 9x
1279 ccoshl NEW: ISO C 9x
1280 ccosl NEW: ISO C 9x
1281 cexp NEW: ISO C 9x
1282 cexpf NEW: ISO C 9x
1283 cexpl NEW: ISO C 9x
1284 cimag NEW: ISO C 9x
1285 cimagf NEW: ISO C 9x
1286 cimagl NEW: ISO C 9x
1287 clearerr_locked REMOVED
1288 clntunix_create NEW: sunrpc ext
1289 clog NEW: ISO C 9x
1290 clog10 NEW: ISO C 9x
1291 clog10f NEW: ISO C 9x
1292 clog10l NEW: ISO C 9x
1293 clogf NEW: ISO C 9x
1294 clogl NEW: ISO C 9x
1295 conj NEW: ISO C 9x
1296 conjf NEW: ISO C 9x
1297 conjl NEW: ISO C 9x
1298 cpow NEW: ISO C 9x
1299 cpowf NEW: ISO C 9x
1300 cpowl NEW: ISO C 9x
1301 cproj NEW: ISO C 9x
1302 cprojf NEW: ISO C 9x
1303 cprojl NEW: ISO C 9x
1304 creal NEW: ISO C 9x
1305 crealf NEW: ISO C 9x
1306 creall NEW: ISO C 9x
1307 creat64 NEW: LFS
1308 csin NEW: ISO C 9x
1309 csinf NEW: ISO C 9x
1310 csinh NEW: ISO C 9x
1311 csinhf NEW: ISO C 9x
1312 csinhl NEW: ISO C 9x
1313 csinl NEW: ISO C 9x
1314 csqrt NEW: ISO C 9x
1315 csqrtf NEW: ISO C 9x
1316 csqrtl NEW: ISO C 9x
1317 ctan NEW: ISO C 9x
1318 ctanf NEW: ISO C 9x
1319 ctanh NEW: ISO C 9x
1320 ctanhf NEW: ISO C 9x
1321 ctanhl NEW: ISO C 9x
1322 ctanl NEW: ISO C 9x
1323 des_setparity NEW: Secure RPC
1324 ecb_crypt NEW: Secure RPC
1325 endutxent NEW: Unix98
1326 exp10 NEW: ISO C 9x
1327 exp10f NEW: ISO C 9x
1328 exp10l NEW: ISO C 9x
1329 exp2 NEW: ISO C 9x
1330 exp2f NEW: ISO C 9x
1331 exp2l NEW: ISO C 9x
1332 fattach NEW: STREAMS
1333 fdetach NEW: STREAMS
1334 fdim NEW: ISO C 9x
1335 fdimf NEW: ISO C 9x
1336 fdiml NEW: ISO C 9x
1337 feclearexcept NEW: ISO C 9x
1338 fegetenv NEW: ISO C 9x
1339 fegetexceptflag NEW: ISO C 9x
1340 fegetround NEW: ISO C 9x
1341 feholdexcept NEW: ISO C 9x
1342 feof_locked REMOVED
1343 feraiseexcept NEW: ISO C 9x
1344 ferror_locked REMOVED
1345 fesetenv NEW: ISO C 9x
1346 fesetexceptflag NEW: ISO C 9x
1347 fesetround NEW: ISO C 9x
1348 fetestexcept NEW: ISO C 9x
1349 feupdateenv NEW: ISO C 9x
1350 fflush_locked REMOVED
1351 ffsl NEW: GNU ext.
1352 ffsll NEW: GNU ext.
1353 fgetpos64 NEW: LFS
1354 fgets_unlocked NEW: GNU ext.
1355 fileno_locked REMOVED
1356 fma NEW: ISO C 9x
1357 fmaf NEW: ISO C 9x
1358 fmal NEW: ISO C 9x
1359 fmax NEW: ISO C 9x
1360 fmaxf NEW: ISO C 9x
1361 fmaxl NEW: ISO C 9x
1362 fmin NEW: ISO C 9x
1363 fminf NEW: ISO C 9x
1364 fminl NEW: ISO C 9x
1365 fmtmsg NEW: Unix98
1366 fopen64 NEW: LFS
1367 fputc_locked REMOVED
1368 fputs_unlocked NEW: GNU ext.
1369 fread_unlocked NEW: GNU ext.
1370 freopen64 NEW: LFS
1371 fseeko NEW: Unix98
1372 fsetpos64 NEW: LFS
1373 fstatfs64 NEW: LFS
1374 fstatvfs NEW: Unix98
1375 fstatvfs64 NEW: LFS
1376 ftello NEW: Unix98
1377 ftello64 NEW: LFS
1378 ftruncate64 NEW: LFS
1379 ftw64 NEW: LFS
1380 fwrite_unlocked NEW: GNU ext.
1381 gai_strerror NEW: IPv6
1382 gamma_r REMOVED
1383 gammaf_r REMOVED
1384 gammal_r REMOVED
1385 getchar_locked REMOVED
1386 getdate NEW: Unix98
1387 getdate_err NEW: Unix98
1388 getdate_r NEW: GNU ext.
1389 getmsg NEW: STREAMS
1390 getnameinfo NEW: IPv6
1391 getnetname NEW: Secure RPC
1392 getpmsg NEW: STREAMS
1393 getpt NEW: Unix98 PTY
1394 getrlimit64 NEW: LFS
1395 getutxent NEW: Unix98
1396 getutxid NEW: Unix98
1397 getutxline NEW: Unix98
1398 glob64 NEW: GNU ext.
1399 globfree64 NEW: GNU ext.
1400 gnu_get_libc_release NEW: GNU ext.
1401 gnu_get_libc_version NEW: GNU ext.
1402 grantpt NEW: Unix98 PTY
1403 host2netname NEW: Secure RPC
1404 iconv NEW: iconv
1405 iconv_close NEW: iconv
1406 iconv_open NEW: iconv
1407 if_freenameindex NEW: IPv6
1408 if_indextoname NEW: IPv6
1409 if_nameindex NEW: IPv6
1410 if_nametoindex NEW: IPv6
1411 in6addr_any NEW: IPv6
1412 in6addr_loopback NEW: IPv6
1413 inet6_isipv4mapped NEW: IPv6
1414 isastream NEW: STREAMS
1415 iswblank NEW: GNU ext.
1416 key_decryptsession NEW: Secure RPC
1417 key_decryptsession_pk NEW: Secure RPC
1418 key_encryptsession NEW: Secure RPC
1419 key_encryptsession_pk NEW: Secure RPC
1420 key_gendes NEW: Secure RPC
1421 key_get_conv NEW: Secure RPC
1422 key_secretkey_is_set NEW: Secure RPC
1423 key_setnet NEW: Secure RPC
1424 key_setsecret NEW: Secure RPC
1425 llrint NEW: ISO C 9x
1426 llrintf NEW: ISO C 9x
1427 llrintl NEW: ISO C 9x
1428 llround NEW: ISO C 9x
1429 llroundf NEW: ISO C 9x
1430 llroundl NEW: ISO C 9x
1431 log2 NEW: ISO C 9x
1432 log2f NEW: ISO C 9x
1433 log2l NEW: ISO C 9x
1434 lrint NEW: ISO C 9x
1435 lrintf NEW: ISO C 9x
1436 lrintl NEW: ISO C 9x
1437 lround NEW: ISO C 9x
1438 lroundf NEW: ISO C 9x
1439 lroundl NEW: ISO C 9x
1440 lseek64 NEW: LFS
1441 makecontext NEW: Unix98
1442 mempcpy NEW: GNU ext.
1443 mmap64 NEW: LFS
1444 moncontrol REMOVED
1445 modify_ldt NEW: kernel
1446 nan NEW: ISO C 9x
1447 nanf NEW: ISO C 9x
1448 nanl NEW: ISO C 9x
1449 nearbyint NEW: ISO C 9x
1450 nearbyintf NEW: ISO C 9x
1451 nearbyintl NEW: ISO C 9x
1452 netname2host NEW: Secure RPC
1453 netname2user NEW: Secure RPC
1454 nexttoward NEW: ISO C 9x
1455 nexttowardf NEW: ISO C 9x
1456 nexttowardl NEW: ISO C 9x
1457 nftw NEW: Unix98
1458 nftw64 NEW: LFS
1459 open64 NEW: LFS
1460 passwd2des NEW: Secure RPC
1461 pow10 NEW: GNU ext.
1462 pow10f NEW: GNU ext.
1463 pow10l NEW: GNU ext.
1464 pread NEW: Unix98
1465 pread64 NEW: LFS
1466 printf_size NEW: GNU ext.
1467 printf_size_info NEW: GNU ext.
1468 profil_counter REMOVED
1469 pthread_mutexattr_getkind_np REPLACED
1470 pthread_mutexattr_setkind_np REPLACED
1471 ptsname NEW: Unix98 PTY
1472 ptsname_r NEW: Unix98 PTY
1473 putc_locked REMOVED
1474 putchar_locked REMOVED
1475 putgrent NEW: GNU ext.
1476 putmsg NEW: STREAMS
1477 putpmsg NEW: STREAMS
1478 pututxline NEW: Unix98
1479 pwrite NEW: Unix98
1480 pwrite64 NEW: LFS
1481 readdir64 NEW: LFS
1482 readdir64_r NEW: LFS
1483 remquo NEW: ISO C 9x
1484 remquof NEW: ISO C 9x
1485 remquol NEW: ISO C 9x
1486 round NEW: ISO C 9x
1487 roundf NEW: ISO C 9x
1488 roundl NEW: ISO C 9x
1489 rtime NEW: GNU ext.
1490 scalbln NEW: ISO C 9x
1491 scalblnf NEW: ISO C 9x
1492 scalblnl NEW: ISO C 9x
1493 scandir64 NEW: LFS
1494 sendfile NEW: kernel
1495 setcontext NEW: Unix98
1496 setrlimit64 NEW: LFS
1497 setutxent NEW: Unix98
1498 sighold NEW: Unix98
1499 sigignore NEW: Unix98
1500 sigqueue NEW: POSIX.1b
1501 sigrelse NEW: Unix98
1502 sigset NEW: POSIX.1b
1503 sigtimedwait NEW: POSIX.1b
1504 sigwaitinfo NEW: POSIX.1b
1505 sincos NEW: GNU ext.
1506 sincosf NEW: GNU ext.
1507 sincosl NEW: GNU ext.
1508 statfs64 NEW: LFS
1509 statvfs NEW: Unix98
1510 statvfs64 NEW: LFS
1511 strcasestr NEW: GNU ext.
1512 strtoimax NEW: ISO C 9x
1513 strtoumax NEW: ISO C 9x
1514 strverscmp NEW: GNU ext.
1515 svcauthdes_stats NEW: Secure RPC
1516 svcunix_create NEW: sunrpc etx
1517 svcunixfd_create NEW: sunrpc ext
1518 swapcontext NEW: Unix98
1519 tcgetsid NEW: Unix98 PTY
1520 tdestroy NEW: GNU ext.
1521 tgamma NEW: ISO C 9x
1522 tgammaf NEW: ISO C 9x
1523 tgammal NEW: ISO C 9x
1524 tmpfile64 NEW: LFS
1525 trunc NEW: ISO C 9x
1526 truncate64 NEW: LFS
1527 truncf NEW: ISO C 9x
1528 truncl NEW: ISO C 9x
1529 umount2 NEW: kernel
1530 unlockpt NEW: Unix98 PTY
1531 updwtmpx NEW: Unix98
1532 user2netname NEW: Secure RPC
1533 utmpxname NEW: Unix98
1534 versionsort NEW: GNU ext.
1535 versionsort64 NEW: GNU ext.
1536 waitid NEW: Unix98
1537 wcscasecmp NEW: GNU ext.
1538 wcsncasecmp NEW: GNU ext.
1539 wcsnlen NEW: GNU ext.
1540 wcstoimax NEW: ISO C 9x
1541 wcstoll NEW: ISO C 9x
1542 wcstoull NEW: ISO C 9x
1543 wcstoumax NEW: ISO C 9x
1544 wcswcs NEW: Unix98
1545 wordexp NEW: POSIX.2
1546 wordfree NEW: POSIX.2
1547 write_profiling REMOVED
1548 xdecrypt NEW: Secure RPC
1549 xdr_authdes_cred NEW: Secure RPC
1550 xdr_authdes_verf NEW: Secure RPC
1551 xdr_cryptkeyarg NEW: Secure RPC
1552 xdr_cryptkeyarg2 NEW: Secure RPC
1553 xdr_cryptkeyres NEW: Secure RPC
1554 xdr_getcredres NEW: Secure RPC
1555 xdr_key_netstarg NEW: Secure RPC
1556 xdr_key_netstres NEW: Secure RPC
1557 xdr_keybuf NEW: Secure RPC
1558 xdr_keystatus NEW: Secure RPC
1559 xdr_netnamestr NEW: Secure RPC
1560 xdr_sizeof NEW: Secure RPC
1561 xdr_unixcred NEW: sunrpc ext
1562 xencrypt NEW: Secure RPC
1563 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1564 \f
1565 Version 2.0.6
1567 * more bug fixes
1569 \f
1570 Version 2.0.5
1572 * more bug fixes
1574 * inet_ntoa is thread-safe
1576 * updwtmp is moved from libutil to libc
1578 * rewrite of cbrt function
1580 * update of timezone data
1581 \f
1582 Version 2.0.4
1584 * more bug fixes
1585 \f
1586 Version 2.0.3
1588 * more bug fixes
1589 \f
1590 Version 2.0.2
1592 * more bug fixes
1594 * add atoll function
1596 * fix complex problems in Berkeley DB code
1598 * fix math functions
1599 \f
1600 Version 2.0.1
1602 * fixed lots of header problems (especially Linux/GNU specific)
1604 * dynamic loader preserves all registers
1606 * Roland McGrath provided support for handling of auxiliary objects in
1607 the ELF dynamic loader.
1609 * support for parallel builds is improved
1610 \f
1611 Version 2.0
1613 * GNU extensions are no longer declared by default. To enable them you
1614 must define the macro `_GNU_SOURCE' in your program or compile with
1615 `-D_GNU_SOURCE'.
1617 * The library has changed from using GNU ld symbol aliases to using weak
1618 symbols where available. The ELF object file format supports weak
1619 symbols; GNU ld also supports weak symbols in the a.out format. (There
1620 is also now support for other GNU ld extensions in ELF. Use the
1621 `--with-elf' option to configure to indicate you have ELF, and
1622 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1623 of many files which contained only symbol aliases, reducing the size of
1624 the source and the compiled library; many other files were renamed to
1625 less cryptic names previously occupied by the symbol alias files.
1626 There is a new header file <elf.h> for programs which operate on
1627 files in the ELF format.
1629 * Converted to Autoconf version 2, so `configure' has more options.
1630 Run `configure --help' to see the details.
1632 * The library can now be configured to build profiling, highly-optimized
1633 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1634 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1635 `configure' enable building these extra libraries. The shared library is
1636 built by default when using both ELF and GNU ld. When shared libraries
1637 are enabled, the new library `-ldl' is available for arbitrary run-time
1638 loading of shared objects; its interface is defined in <dlfcn.h>. The
1639 new header file <link.h> gives access to the internals of the run-time
1640 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1641 application of same name on other systems and it provides information
1642 about dynamically linked binaries.
1644 * The C library now provides the run-time support code for profiling
1645 executables compiled with `-pg'. Programs can control the profiling code
1646 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1647 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1648 the support for this file format was contributed by David Mosberger-Tang.
1650 * The math code has been replaced with a math library based on fdlibm from
1651 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1652 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1653 functions. The math functions now reside in a separate library, so
1654 programs using them will need to use `-lm' their linking commands.
1656 * John C. Bowman contributed optimized ix87 assembler inline functions.
1658 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1659 mechanism similar to that found in Solaris 2. This is now used for the
1660 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1661 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1662 file controls what services are used for each individual database. This
1663 works by loading shared libraries with names specified in `nsswitch.conf',
1664 so service modules can be changed or added at any time without even
1665 relinking any program. Currently there are the file, db, and NIS based
1666 NSS services available.
1668 * The new functions `strtoq' and `strtouq' parse integer values from
1669 strings, like `strtol' and `strtoul', but they return `long long int' and
1670 `unsigned long long int' values, respectively (64-bit quantities).
1672 * The new functions `strtof' and `strtold' parse floating-point values from
1673 strings, like `strtod', but they return `float' and `long double' values,
1674 respectively (on some machines `double' and `long double' are the same).
1676 * Ulrich Drepper has contributed new implementations of the floating-point
1677 printing and reading code used in the `printf' family of functions and
1678 `strtod', `strtof', and `strtold'. These new functions are perfectly
1679 accurate, and much faster than the old ones.
1681 * The implementation of the POSIX locale model was completely rewritten by
1682 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1683 to compile the POSIX locale definition.
1685 * The former dummy implementations of the strcoll and strxfrm function are
1686 now replaced by fully functional code contributed by Ulrich Drepper. The
1687 collation information comes from the POSIX locale definitions.
1689 * The new header <langinfo.h> defines an interface for accessing
1690 various locale-dependent data (using the locale chosen with `setlocale').
1692 * Ulrich Drepper has contributed a new suite of functions for operation on
1693 wide-character and multibyte-character strings, in <wchar.h>;
1694 and classification and case conversion of wide characters, in <wctype.h>.
1695 These new functions are conforming to the ISO C, Amendement 1 specification.
1697 * There is now a second implementation of the standard I/O library available.
1698 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1699 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1701 * You can now use positional parameter specifications in format strings
1702 for the `printf' and `scanf' families of functions. For example,
1703 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1704 ``Number 6, Mr Jones''. This is mainly useful when providing different
1705 format strings for different languages, whose grammars may dictate
1706 different orderings of the values being printed. To support this
1707 feature, the interface for `register_printf_handler' has changed; see
1708 the header file <printf.h> for details.
1710 * The `printf' and `scanf' families of functions now understand a new
1711 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1712 to group numbers as indicated by the locale; for `scanf' and friends, this
1713 says to accept as valid only a number with all the proper grouping
1714 separators in the right places. In the default "C" locale, numbers are
1715 not grouped; but locales for specific countries will define the usual
1716 conventions (i.e. separate thousands with `,' in the US locale).
1718 * The pgrp functions have been regularized, slightly incompatibly but much
1719 less confusingly. The core functions are now `getpgid' and `setpgid',
1720 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1721 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1722 provided for compatibility. There is no longer an incompatible `getpgrp'
1723 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1725 * The new header file <fts.h> and suite of functions simplify programs that
1726 operate on directory trees. This code comes from 4.4 BSD.
1728 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1729 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1730 NSS scheme used in glibc.
1732 * There is a new malloc debugging hook `__memalign_hook'.
1734 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1735 `unsigned int' in <sys/types.h>. These are for compatibility only and
1736 their use is discouraged.
1738 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1739 done differently, so that it works even without GNU ld.
1741 * New function `euidaccess' checks allowed access to a file like `access',
1742 but using the effective IDs instead of the real IDs.
1744 * The time zone data files have been updated for the latest and greatest
1745 local time conventions of the countries of the world.
1747 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1748 see <dirent.h>.
1750 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1751 for formatting floating-point numbers. They are provided only for
1752 compatibility; new programs should use `sprintf' instead. There are
1753 also equivalent function for the `long double' floating-point type and
1754 all functions also exist in a reentrant form.
1756 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1757 functions for maintaining the login-record files (primarily of use to
1758 system programs such as `login'), and convenient functions for
1759 allocating and initializing a pseudo-terminal (pty) device.
1761 * Ulrich Drepper has contributed new support for System V style
1762 shared memory and IPC on systems that support it.
1764 * Ulrich Drepper has contributed several miscellaneous new functions found
1765 in System V: The `hsearch' family of functions provide an effective
1766 implementation of hash tables; `a64l' and `l64a' provide a very simple
1767 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1768 number generator.
1770 * Ulrich Drepper has contributed new reentrant counterparts for the
1771 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1773 * Ulrich Drepper has contributed new, highly-optimized versions of several
1774 string functions for the i486/Pentium family of processors.
1776 * Ulrich Drepper has updated the Linux-specific code, based largely
1777 on work done in Hongjiu Lu's version of GNU libc for Linux.
1778 The GNU library now supports Linux versions 2.0.10 and later,
1779 using the ELF object file format (i[3456]86-*-linux).
1781 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1783 * David Mosberger-Tang and Richard Henderson have ported the C library
1784 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1785 dynamic linking support for ELF/Alpha.
1787 * Richard Henderson contributed several Alpha optimized assembler function
1788 for arithmetic and string handling.
1790 * Ulrich Drepper has contributed a new set of message catalog functions to
1791 support multiple languages using the <libintl.h> interface, for use with
1792 his new package GNU gettext. Translation volunteers have contributed
1793 catalogs of the library's messages in Spanish, German, and Korean.
1795 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1796 program and the `catgets' function for reading the catalog files it
1797 creates. (The <libintl.h> interface is preferred; we include the
1798 <nl_types.h> interface using `catgets' only for source compatibility with
1799 programs already written to use it.)
1801 * New header file <values.h> gives SVID-compatible names for <limits.h>
1802 constants.
1804 * Various new macros, declarations, and small header files for compatibility
1805 with 4.4 BSD.
1807 * New function `group_member' is a convenient way to check if a process has
1808 a given effective group ID.
1810 * When using GCC 2.7 and later, the socket functions are now declared in a
1811 special way so that passing an argument of type `struct sockaddr_in *',
1812 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1813 `struct sockaddr *' type, does not generate a type-clash warning.
1815 * New function `error' declared in header file <error.h> is a convenient
1816 function for printing error messages and optionally exiting; this is the
1817 canonical function used in GNU programs. The new functions `err', `warn',
1818 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1819 doing the same thing.
1821 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1822 POSIX.2 `glob' function to do ~ and {...} expansion.
1824 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1825 `clearenv' which is used in POSIX.9 is also available.
1827 * New function `getsid' returns session ID number on systems that support it.
1829 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1830 files <db.h> and <mpool.h> provide a rich set of functions for several
1831 types of simple databases stored in memory and in files, and <ndbm.h> is
1832 an old `ndbm'-compatible interface using the `db' functions. Link with
1833 `-ldb' to get these functions.
1835 * New macro `strdupa' copies a string like `strdup', but uses local stack
1836 space from `alloca' instead of dynamic heap space from `malloc'.
1838 * New function `strnlen' is like `strlen' but searches only a given maximum
1839 number of characters for the null terminator. `stpncpy', `strndup' and
1840 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1841 function.
1843 * New function `statfs' in header <sys/statfs.h>.
1845 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1846 provide convenient functions for operating on blocks of null-terminated
1847 strings.
1849 * A new suite of functions in <utmp.h> handle all the details of reading
1850 and writing the utmp file.
1852 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1853 Thorsten Kukuk.
1855 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1856 completely POSIX compliant and also implemented the extended functionality
1857 to handle alternate digit representation and alternate era date formats.
1859 * Ulrich Drepper provided an implementation of the `strptime' function
1860 defined in XPG4.2 which transforms a string into a `struct tm' value.
1862 * Paul Eggert provided the tzselect shell script as part of the timezone
1863 code. The shell script makes it easy to select the correct timezone
1864 specification.
1866 * The implementation of the malloc family of functions is completely replaced
1867 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1868 The implementation uses the mmap function (if available) and it is
1869 optimized for the use in multi threaded programs.
1871 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1872 functions. This new functionality is usable by specifying a special
1873 salt string and it is compatible with implementation on *BSD systems.
1875 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1876 `getsubopt' to handle second level command line options, `bsd_signal'
1877 to access BSD style `signal' functionality, the obsolete `regexp' style
1878 expression matcher.
1880 * the `lchown' function is available on system which support this
1881 functionality.
1883 * The implementation of the shadow password handling function was contributed
1884 by Ulrich Drepper.
1886 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1888 * POSIX.1g support was added. The <sys/select.h> header is available,
1889 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1890 implementation of `getaddrinfo'.
1891 \f
1892 Version 1.09
1894 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1896 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1897 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1899 * The new function `daemon' from 4.4 BSD is useful for server programs that
1900 want to put themselves in the background.
1902 * Joel Sherrill has contributed support for several standalone boards that
1903 run without an operating system.
1905 * `printf', `scanf' and friends now accept a `q' type modifier for long
1906 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1908 * All of the code taken from BSD (notably most of the math and networking
1909 routines) has been updated from the BSD 4.4-Lite release.
1911 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1913 * The new functions `getdomainname' and `setdomainname' fetch or change the
1914 YP/NIS domain name. These are system calls which exist on systems which
1915 have YP (aka NIS).
1917 * The time zone data files have been updated for the latest international
1918 conventions.
1920 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1921 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1922 \f
1923 Version 1.08
1925 * The C library now includes support for Sun RPC, from Sun's free
1926 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1927 are included. (There is still no support for YP.)
1929 * Tom Quinn has contributed a port of the C library to SGI machines running
1930 Irix 4 (mips-sgi-irix4).
1932 * The new `lockf' function is a simplified interface to the locking
1933 facilities of `fcntl', included for compatibility.
1935 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1937 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1939 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1940 compatibility.
1942 * The error message printed by `assert' for a failed assertion now includes
1943 the name of the program (if using GNU ld) and the name of the calling
1944 function (with versions of GCC that support this).
1946 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1948 * The library now includes the <sys/mman.h> header file and memory
1949 management functions `mmap', `munmap', `mprotect', `msync', and
1950 `madvise', on systems that support those facilities.
1952 * The interface for `mcheck' has changed slightly: the function called to
1953 abort the program when an allocation inconsistency is detected now takes
1954 an argument that indicates the type of failure. The new function
1955 `mprobe' lets you request a consistency check for a particular block at
1956 any time (checks are normally done only when you call `free' or `realloc'
1957 on a block).
1959 * It is now possible to easily cross-compile the C library, building on one
1960 system a library to run on another machine and/or operating system. All
1961 you need to do is set the variable `HOST_CC' in `configparms' to the
1962 native compiler for programs to run on the machine you are building on (a
1963 few generator programs are used on Unix systems); set `CC' to the
1964 cross-compiler.
1966 * The new function `fexecve' (only implemented on the GNU system) executes
1967 a program file given a file descriptor already open on the file.
1968 \f
1969 Version 1.07
1971 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1972 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1974 * You can set the variable `libprefix' in `configparms' to specify a prefix
1975 to be prepended to installed library files; this makes it easy to install
1976 the GNU C library to be linked as `-lgnuc' or whatever.
1978 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1979 copies a limited number of characters from a string, and returns the
1980 address of the last character written.
1982 * You no longer need to check for whether the installed `stddef.h' is
1983 compatible with the GNU C library. configure now checks for you.
1985 * You can now define a per-stream `fileno' function to convert the
1986 stream's cookie into an integral file descriptor.
1988 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1989 allocates zero bytes of storage, and returns a unique pointer which
1990 you can pass to `realloc' or `free'. The behavior is undefined if
1991 you dereference this pointer.
1993 * The C library now runs on Sony NEWS m68k machines running either
1994 NewsOS 3 or NewsOS 4.
1996 * The new `syscall' function is a system-dependent primitive function
1997 for invoking system calls. It has the canonical behavior on Unix
1998 systems, including unreliable return values for some calls (such as
1999 `pipe', `fork' and `getppid').
2001 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2002 to `EAGAIN', which is the preferred name. On systems whose kernels
2003 use two distinct codes, the C library now translates EWOULDBLOCK to
2004 EAGAIN in every system call function.
2005 \f
2006 Version 1.06
2008 * The GNU C Library Reference Manual is now distributed with the library.
2009 `make dvi' will produce a DVI file of the printed manual.
2010 `make info' will produce Info files that you can read on line using C-h i
2011 in Emacs or the `info' program.
2012 Please send comments on the manual to bug-glibc-manual@gnu.org.
2014 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2016 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2018 * Jason Merrill has contributed a port to the Sequent Symmetry running
2019 Dynix version 3 (i386-sequent-dynix).
2021 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2022 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2024 * New function `memory_warnings' lets you arrange to get warnings when
2025 malloc is running out of memory to allocate, like Emacs gives you.
2027 * The C library now contains the relocating allocator used in Emacs 19 for
2028 its editing buffers. This allocator (ralloc) minimizes allocation
2029 overhead and fragmentation by moving allocated regions around whenever it
2030 needs to. You always refer to a ralloc'd region with a "handle" (a
2031 pointer to a pointer--an object of type `void **').
2033 * There is a new `printf' format: `%m' gives you the string corresponding
2034 to the error code in `errno'.
2036 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2037 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2038 pass, the `a' modifier says to fill in a `char **' you pass with a
2039 malloc'd string.
2041 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2042 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2043 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2045 * `mkstemp' is a traditional Unix function to atomically create and open a
2046 uniquely-named temporary file.
2047 \f
2048 Version 1.05
2050 * The standard location for the file that says what the local timezone is
2051 has changed again. It is now `/usr/local/etc/localtime' (or more
2052 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2054 * The distribution no longer contains any files with names longer than 14
2055 characters.
2057 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2058 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2060 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2061 \f
2062 Version 1.04
2064 * The configuration process has changed quite a bit. The `configure'
2065 script is now used just like the configuration scripts for other GNU
2066 packages. The `sysdeps' directory hierarchy is much rearranged.
2067 The file `INSTALL' explains the new scheme in detail.
2069 * The header files no longer need to be processed into ANSI C and
2070 traditional C versions. There is just one set of files to install, and
2071 it will work with ANSI or old C compilers (including `gcc -traditional').
2073 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2074 MIPS DECStation running Ultrix 4.
2076 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2077 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2078 made itself into a shared library.
2080 * Yet further improved support for the i386, running 4.3 BSD-like systems
2081 (such as Mach 3 with the Unix single-server), or System V.
2083 * New function `strncasecmp' to do case-insensitive string comparison
2084 with limited length.
2086 * New function `strsep' is a reentrant alternative to `strtok'.
2088 * New functions `scandir' and `alphasort' for searching directories.
2090 * New function `setenv' is a better interface to `putenv'.
2092 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2093 function for traversing a directory tree.
2095 * The GNU obstack package is now also part of the C library.
2096 The new function `open_obstack_stream' creates a stdio stream that
2097 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2098 formatted output directly to an obstack.
2100 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2101 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2103 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2105 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2106 things to your strings.
2108 * There are some new test programs: test-fseek, testmb, and testrand.
2110 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2111 These ports are not finished, but are a good starting place for really
2112 supporting those systems.
2114 * `/etc/localtime' is now the standard location for the file that says what
2115 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2116 This follows the general principle that `/etc' is the place for all local
2117 configuration files.
2119 * The C library header files now use `extern "C"' when used by the C++
2120 compiler, so the C library should now work with C++ code.
2122 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2123 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2124 in <strings.h>.)
2126 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2127 function which uses the `merge sort' algorithm, and is said to be
2128 significantly faster than the old GNU `qsort' function. Merge sort is
2129 now the standard `qsort' function. The new algorithm can require a lot
2130 of temporary storage; so, the old sorting function is called when the
2131 required storage is not available.
2133 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2134 provides the Unix `crypt' function, plus some other entry points.
2136 * The code and header files taken from 4.4 BSD have been updated with the
2137 latest files released from Berkeley.
2138 \f
2139 ----------------------------------------------------------------------
2140 Copyright information:
2142 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2144 Permission is granted to anyone to make or distribute verbatim copies
2145 of this document as received, in any medium, provided that the
2146 copyright notice and this permission notice are preserved,
2147 thus giving the recipient permission to redistribute in turn.
2149 Permission is granted to distribute modified versions
2150 of this document, or of portions of it,
2151 under the above conditions, provided also that they
2152 carry prominent notices stating who last changed them.
2153 \f
2154 Local variables:
2155 version-control: never
2156 fill-column: 76
2157 End: