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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 6778, 6808, 9685, 11607, 13717, 13696, 13939, 14042, 14090, 14166, 14150,
13 14151, 14154, 14157, 14166, 14173, 14195, 14252, 14283, 14298, 14303,
14 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14505
16 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
17 Optimized versions of memcpy, memset, and memcmp added for System z10 and
18 zEnterprise z196.
19 Implemented by Andreas Krebbel.
21 * The new function secure_getenv allows secure access to the environment,
22 returning NULL if running in a SUID/SGID process. This function replaces
23 the internal function __secure_getenv.
25 * SystemTap static probes have been added into the dynamic linker.
26 Implemented by Gary Benson.
28 * Optimizations of string functions strstr, strcasestr and memmem.
29 Implemented by Maxim Kuvyrkov.
31 * The minimum Linux kernel version that this version of the GNU C Library
32 can be used with is 2.6.16.
34 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
35 powerpc POWER7. Implemented by Will Schmidt.
37 * New configure option --disable-nscd builds the C library such that it
38 never attempts to contact the Name Service Caching Daemon (nscd).
40 \f
41 Version 2.16
43 * The following bugs are resolved with this release:
45 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
46 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
47 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
48 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
49 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
50 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
51 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
52 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
53 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
54 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
55 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
56 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
57 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
58 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
59 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
60 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
61 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
62 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
63 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
64 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
65 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
66 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
67 14278
69 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
70 configuring glibc with:
71 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
72 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
73 Implemented by H.J. Lu.
75 * ISO C11 support:
77 + define static_assert
79 + do not declare gets
81 + declare at_quick_exit and quick_exit also for ISO C11
83 + aligned_alloc. NB: The code is deliberately allows the size parameter
84 to not be a multiple of the alignment. This is a moronic requirement
85 in the standard but it is only a requirement on the caller, not the
86 implementation.
88 + timespec_get added
90 + uchar.h support added
92 + CMPLX, CMPLXF, CMPLXL added
94 Implemented by Ulrich Drepper.
96 * Support for the IA-64 has been moved to ports.
98 * Remove support for anything but ELF binary format
100 * Checking versions of poll, ppoll added.
101 Implemented by Ulrich Drepper.
103 * More generic and 64-bit performance optimizations to math functions.
104 Implemented by Ulrich Drepper.
106 * New configure option --enable-obsolete-rpc makes the deprecated RPC
107 headers and functions available at compile time as they were before
108 version 2.14. This option will be removed at some time in the future
109 after the TI-RPC library becomes fully sufficient for the needs of
110 existing applications.
112 * Compatibility code for Linux kernel versions before 2.4 has been removed.
113 Note that glibc is not expected to work with any Linux kernel version
114 before 2.6.
116 * New header <sys/auxv.h> and function getauxval allowing easy access to
117 the AT_* key-value pairs passed from the Linux kernel. The header also
118 defines the HWCAP_* bits associated with the AT_HWCAP key.
120 * New locales: mag_IN
122 * New configure option --enable-systemtap builds SystemTap static probes
123 into libc for setjmp and longjmp and into libpthread for various operations.
124 So far the setjmp/longjmp probes and some of the libpthread probes are
125 provided only for i*86 and x86_64.
126 Implemented by Roland McGrath and Rayson Ho.
128 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
130 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
131 and Will Schmidt.
133 * More optimized functions for SPARC. Implemented by David S. Miller.
135 * Improved support for cross-compilation, especially bootstrap builds
136 without a previously built glibc.
138 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
139 Chris Metcalf from Tilera.
141 * Support for the old ARM ABI has been removed from ports. Only the EABI is
142 now supported for ARM processors.
144 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
145 as the name of the dynamic linker, to distinguish it from the
146 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
148 * Support for CRIS has been removed from ports.
150 * A new class of installed header has been documented for low-level
151 platform-specific functionality. PowerPC added the first instance with a
152 function to provide time base register access. Contributed by Tulio
153 Magno Quites Machado Filho.
155 * ix86 configurations now install header files that are consistent with
156 what x86-64 configurations install. These same header files can be used
157 for -m32, -m64, or -mx32 builds.
158 Contributed by H.J. Lu.
160 * Math library bug fixes. A thorough audit of all open math library bugs was
161 conducted by Joseph Myers. Significant progress was made on many math
162 library bugs resulting in more accurate exceptions and function results.
163 Many thanks to all those that contributed including Andreas Jaeger for his
164 patch review and work on the x87 trigonometric instruction issues.
166 * Timezone data is no longer installed. Timezone-related binaries and scripts
167 will continue to be installed. Users should obtain their timezone data from
168 their distribution provider or from the tzdata package at
169 <ftp://munnari.oz.au/pub/>.
170 \f
171 Version 2.15
173 * The following bugs are resolved with this release:
175 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
176 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
177 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
178 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
179 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
180 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
181 13484, 13506, 13515, 13523, 13524, 13538, 13540
183 * New program pldd to list loaded object of a process
184 Implemented by Ulrich Drepper.
186 * Add nss_db support back to glibc. No more dependency on Berkeley db
187 and support for initgroups lookups.
188 Implemented by Ulrich Drepper.
190 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
191 Contributed by HJ Lu.
193 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
194 Contributed by HJ Lu.
196 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
197 on x86-32 and x86-64.
198 Contributed by Liubov Dmitrieva.
200 * Optimized strchr and strrchr for SSE on x86-32.
201 Contributed by Liubov Dmitrieva.
203 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
204 for x86-64 and x86-32.
205 Contributed by Liubov Dmitrieva.
207 * New interfaces: scandirat, scandirat64
208 Implemented by Ulrich Drepper.
210 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
211 Implemented by Ulrich Drepper.
213 * nscd now also caches the netgroup database.
214 Implemented by Ulrich Drepper.
216 * Integrate libm with gcc's -ffinite-math-only option.
217 Implemented by Ulrich Drepper.
219 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
220 to math functions. Implemented by Ulrich Drepper.
222 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
223 Implemented by Ulrich Drepper.
225 * New Linux interfaces: process_vm_readv, process_vm_writev
227 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
228 Implemented by Ulrich Drepper.
230 * Optimized nearbyint and strcasecmp for PPC.
231 Implemented by Adhemerval Zanella.
233 * New locales: bho_IN, unm_US, es_CU, ta_LK
234 \f
235 Version 2.14
237 * The following bugs are resolved with this release:
239 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
240 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
241 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
242 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
243 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
244 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
245 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
246 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
247 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
248 12795, 12811, 12813, 12814, 12841
250 * The RPC implementation in libc is obsoleted. Old programs keep working
251 but new programs cannot be linked with the routines in libc anymore.
252 Programs in need of RPC functionality must be linked against TI-RPC.
253 The TI-RPC implementation is IPv6 enabled and there are other benefits.
255 Visible changes of this change include (obviously) the inability to link
256 programs using RPC functions without referencing the TI-RPC library and the
257 removal of the RPC headers from the glibc headers.
258 Implemented by Ulrich Drepper.
260 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
261 syncfs, setns, sendmmsg
263 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
264 yue_HK, lij_IT, mhr_RU
266 * New encodings: CP770, CP771, CP772, CP773, CP774
268 * New program sotruss to trace calls through PLTs
269 Implemented by Ulrich Drepper.
271 * The malloc hook implementation is marked deprecated and will be removed
272 from the default implementation in the next version. The design never
273 worked ever since the introduction of threads. Even programs which do
274 not create threads themselves can use multiple threads created internally.
275 \f
276 Version 2.13
278 * The following bugs are resolved with this release:
280 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
281 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
282 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
283 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
284 12378, 12394, 12397
286 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
288 * POWER7 optimizations: memset, memcmp, strncmp
290 * New optimized string functions for x86-64: strnlen (SSE2),
291 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
292 Implemented by Ulrich Drepper.
293 \f
294 Version 2.12
296 * The following bugs are resolved with this release:
298 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
299 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
300 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
301 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
302 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
303 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
304 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
305 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
307 * New interfaces: pthread_getname_np, pthread_setname_np
309 * New Linux interface: recvmmsg
311 * STT_GNU_IFUNC implemented for Sparc by David Miller.
313 * The dynamic linker now recognizes supported ABI versions from the
314 EI_ABIVERSION field in the ELF header.
315 Implemented by Ulrich Drepper.
317 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
318 will not be used to fill in password fields in the passwd.byname replies.
319 Instead it is used to synthesize the shadow.byname table, should it be
320 missing. This is a useful mode in some installations involving Solaris.
321 Implemented by Ulrich Drepper.
323 * New locales: kok_IN, sq_MK, cv_RU
324 \f
325 Version 2.11
327 * The following bugs are resolved with this release:
329 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
330 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
331 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
332 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
333 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
334 10789, 10817, 10823, 10840, 10847
336 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
337 mkostemps64
338 Implemented by Ulrich Drepper.
340 * Checking version of longjmp added that fails if an uninitialized stack
341 frame would be created. Implemented by Ulrich Drepper.
343 * STT_GNU_IFUNC is now supported in static executables.
344 Implemented by H.J. Lu.
346 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
348 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
349 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
350 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
351 Contributed by H.J. Lu.
353 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
354 Implemented by Ulrich Drepper.
356 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
357 strstr, strcasestr.
358 Contributed by H.J. Lu.
360 * Support for fma instruction in AVX on x86-64.
361 Implemented by H.J. Lu and Ulrich Drepper.
363 * AVX support in x86-64 auditing support in ld.so.
364 Implemented by H.J. Lu.
366 * STB_GNU_UNIQUE support added.
367 Implemented by Ulrich Drepper.
369 * Implement second fallback mode for optimized DNS lookup for even more
370 broken environments. If two requests from the same port are not
371 handled correctly close the socket and open a new one before sending
372 the second request. The 'single-request-reopen' option in /etc/resolv.conf
373 can be used to select this mode right away, instead of rediscovering the
374 necessity is every process again.
375 Implemented by Ulrich Drepper.
377 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
378 Implemented by Adam Tkac.
380 * Optimized iconv conversions for S390x.
381 Implemented by Andreas Krebbel.
383 * Using condvars with PI mutexes is now more efficient due to kernel
384 support for requeueing to PI futexes. NPTL support added for x86-64.
385 Implemented by Ulrich Drepper.
387 * New locales: ps_AF, my_MM
388 \f
389 Version 2.10
391 * The following bugs are resolved with this release:
393 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
394 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
395 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
396 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
397 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
399 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
400 Implemented by Ulrich Drepper.
402 * New Linux interfaces: accept4, fallocate, fallocate64.
403 Implemented by Ulrich Drepper.
405 * Correct declarations of string function when used in C++ code. This
406 could lead to compile errors for invalid C++ code.
408 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
409 now in POSIX.
411 * New POSIX 2008 interface: psiginfo
412 Implemented by Ulrich Drepper.
414 * New ISO C++1x interfaces: quick_exit, at_quick_exit
415 Implemented by Ulrich Drepper.
417 * Support for selecting between multiple function definitions at runtime
418 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
420 * The libcrypt library can now use the hash function implementations in
421 NSS. Implemented by Ulrich Drepper.
423 * The malloc implementation can be compiled to be less memory efficient
424 but higher performing in multi-threaded programs.
425 Implemented by Ulrich Drepper.
427 * New locales: nan_TW@latin, ks_IN
429 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
430 Implemented by Ulrich Drepper.
432 * Extended printf hook support. It is possible to use user-defined types
433 and extend existing format specifiers.
434 Implemented by Ulrich Drepper.
436 * Handling for group shadow files has been added.
437 Implemented by Ulrich Drepper.
439 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
440 servers (the case, e.g., for some people using the built-in DNS
441 server in ADSL modems/routers). There is a once-per-process timeout
442 in case of a broken server. To avoid it, users can run nscd or put
443 'options single-request' in /etc/resolv.conf.
444 Implemented by Ulrich Drepper.
445 \f
446 Version 2.9
448 * The following bugs are resolved with this release:
450 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
451 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
452 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
453 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
454 6968, 6974, 6980, 6995, 7008, 7009, 7029
456 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
457 up at the same time. Implemented by Ulrich Drepper.
459 * TLS descriptors for LD and GD on x86 and x86-64.
460 Implemented by Alexandre Oliva.
462 * getaddrinfo now handles DCCP and UDPlite.
463 Implemented by Ulrich Drepper.
465 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
466 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
467 Implemented by Ulrich Drepper.
469 * New implementation of memmem, strstr, and strcasestr which is O(n).
470 Implemented by Eric Blake.
472 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
474 * Implement "e" option for popen to open file descriptor with the
475 close-on-exec flag set. Implemented by Ulrich Drepper.
477 * Implement "b" mode for fmemopen. In this mode writes writes don't
478 implicitly add a NUL byte and seeks from the end of the buffer really
479 use the buffer end, not the string length as the basis.
480 Implemented by Ulrich Drepper.
482 * Many functions, exported and internal, now atomically set the close-on-exec
483 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
485 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
486 Sinhala)
487 Implemented by Pravin Satpute.
489 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
490 \f
491 Version 2.8
493 * The following bugs are resolved with this release:
495 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
496 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
497 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
498 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
499 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
500 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
501 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
503 * New locales: bo_CN, bo_IN, shs_CA.
505 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
507 * Sorting rules for some Indian languages (Devanagari and Gujarati).
508 Implemented by Pravin Satpute.
510 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
512 * nscd caches now all timeouts for DNS entries
513 Implemented by Ulrich Drepper.
515 * nscd is more efficient and wakes up less often.
516 Implemented by Ulrich Drepper.
518 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
519 vdprintf, and obstack_vprintf.
520 Implemented by Jakub Jelinek.
522 * Faster memset for x86-64.
523 Implemented by Harsha Jagasia and H.J. Lu.
525 * Faster memcpy on x86.
526 Implemented by Ulrich Drepper.
528 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
529 Implemented by Ulrich Drepper.
531 * Faster sqrt and sqrtf implemention for some PPC variants.
532 Implemented by Steven Munroe.
533 \f
534 Version 2.7
536 * The following bugs are resolved with this release:
538 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
539 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
540 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
541 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
542 5071, 5103, 5104, 5112, 5113, 5184, 5186
544 * More checking functions: fread, fread_unlocked, open*, mq_open.
545 Implemented by Jakub Jelinek and Ulrich Drepper.
547 * Extend fortification to C++. Implemented by Jakub Jelinek.
549 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
550 by not recognizing 'a' as a modifier when those specs are requested.
551 Implemented by Jakub Jelinek.
553 * PPC optimizations to math and string functions.
554 Implemented by Steven Munroe.
556 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
557 options to be passed. Implemented by Ulrich Drepper.
559 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
561 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
562 Implemented by Ulrich Drepper.
564 * Handle private futexes in the NPTL implementation.
565 Implemented by Jakub Jelinek and Ulrich Drepper.
567 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
568 Implemented by Roland McGrath and Ulrich Drepper.
570 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
572 * SHA-256 and SHA-512 based password encryption.
573 Implemented by Ulrich Drepper.
575 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
576 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
577 yo_NG.
579 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
580 Implemented by Ulrich Drepper.
581 \f
582 Version 2.6
584 * The following bugs are resolved with this release:
586 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
587 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
588 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
589 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
590 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
591 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
592 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
593 4702, 4858
595 * New Linux interfaces: epoll_pwait, sched_getcpu.
597 * New generic interfaces: strerror_l.
599 * nscd can now cache the services database. Implemented by Ulrich Drepper.
600 \f
601 Version 2.5
603 * The following bugs are resolved with this release:
605 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
606 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
607 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
608 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
609 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
610 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
611 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
612 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
613 3225, 3251, 3252, 3253, 3273
615 * For Linux, the sorting of addresses returned by getaddrinfo now also
616 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
617 Implemented by Ulrich Drepper.
619 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
620 Implemented by Ulrich Drepper.
622 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
624 * New iconv module for MIK. Contributed by Alexander Shopov.
626 * For sites with broken group and/or passwd database, the auto-propagate
627 option of nscd can prevent creating ID lookup entries from the results
628 of a name lookup and vice versa. This usually is no problem but some
629 site might have problems with the default behavior.
630 Implemented by Ulrich Drepper.
632 * Iterating over entire database in NIS can be slow. With the
633 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
634 to trade time for memory. The entire database will be read at once.
635 Implemented by Ulrich Drepper.
637 * The interfaces introduced in RFC 3542 have been implemented by
638 Ulrich Drepper.
640 * Support for the new ELF hash table format was added by Ulrich Drepper.
642 * Support for priority inheritance mutexes added by Jakub Jelinek and
643 Ulrich Drepper.
645 * Support for priority protected mutexes added by Jakub Jelinek.
647 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
648 or_IN, csb_PL, fy_NL, sr_ME.
649 \f
650 Version 2.4
652 * More overflow detection functions.
654 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
655 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
657 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
658 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
659 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
660 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
661 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
662 by Masahide Washizawa.
664 * It is now possible to install audit libraries for the dynamic linker using
665 LD_AUDIT. Implemented by Ulrich Drepper.
667 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
668 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
669 For a libc and libpthread that works well on Linux 2.4 kernels, we
670 recommend using the stable 2.3 branch.
672 * The new function open_wmemstream acts like open_memstream,
673 but uses a wchar_t wide character buffer.
675 * The new function ppoll is an improved version of poll, similar to pselect.
677 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
678 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
679 renameat, unlinkat, linkat, symlinkat, readlinkat.
681 * New Linux kernel system calls: unshare,
682 inotify_init, inotify_add_watch, inotify_rm_watch.
684 * The euidaccess function is now also known by the alias eaccess,
685 for compatibility with some other systems.
687 * Timezone data updated to 2006b version.
688 \f
689 Version 2.3.6
691 * The following bugs are resolved with this release:
693 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
694 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
695 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
696 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
697 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
698 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
700 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
702 * As of this release, GCC 4 can be used to compile the C Library.
704 * Timezone data updated to 2005m version.
705 \f
706 Version 2.3.5
708 * The following bugs are resolved with this release:
710 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
711 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
712 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
713 777, 787, 821, 822, 823, 825
715 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
716 \f
717 Version 2.3.4
719 * Support for RFC 3678. Real implementations exist only for Linux so far.
720 Implemented by Ulrich Drepper.
722 * nscd can now cache entries persistently. Expiring entries are reloaded.
723 For speedups the cache can be shared in memory with client processes.
724 Implemented by Ulrich Drepper.
726 * nscd can now perform SELinux checks.
727 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
729 * getaddrinfo queries are now cached. Canonical name lookup is performed
730 efficiently.
731 Implemented by Ulrich Drepper.
733 * The nothrow function attribute is used when headers are used by gcc when
734 compiling C code. This can avoid significant amounts of exception
735 handling data.
737 * The malloc functions perform more error checking and are stricter when
738 it comes to reacting on errors. The default action is to terminate
739 the process after showing an error message. Implemented by Ulrich Drepper.
741 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
742 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
744 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
745 namespaces using the new function dlmopen(). This feature is of course,
746 like most other dynamic loading functionality, not available in statically
747 linked applications. Implemented by Ulrich Drepper.
749 * Low-overhead boundary checking variants of string and some stdio functions
750 were added. These are to be used in conjunction with a gcc patch by
751 Jakub Jelinek which adds calls to these functions if possible.
752 Implemented by Jakub Jelinek and Ulrich Drepper.
754 * Old code for several operating systems and machine architectures that
755 have not been in working condition in a long time have been removed from
756 the main source tree maintained by the GNU C Library's maintainers.
757 These files are now reside in the separate `ports' source module
758 that is usable as an add-on when building the library.
759 \f
760 Version 2.3.3
762 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
763 interrogate the dynamic linker, compatible with the Solaris interface.
765 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
766 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
768 * getifaddrs now uses the netlink interface on Linux to get its information.
769 Implemented by Thorsten Kukuk.
771 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
772 Implemented by Ulrich Drepper.
774 * support for non-executable stacks on x86 has been added. Changes mostly
775 by Roland McGrath.
777 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
778 and Ulrich Drepper.
780 * getaddrinfo now performs destination address selection according to
781 RFC 3484.
782 \f
783 Version 2.3.2
785 * Thread-safe interfaces for many functions that access locale data
786 were added in version 2.3, but these features were omitted from NEWS.
787 Many functions have variants with an `_l' suffix that take a `locale_t'
788 object as a parameter rather than consulting the current locale.
789 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
790 create and maintain `locale_t' objects. Additionally, the new function
791 `uselocale' sets "the current locale" (as used by functions not so
792 parameterized) set for an individual thread. These features were added
793 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
795 * The functions getresuid, getresgid, setresuid, and setresgid, which
796 have long been available on Linux, are now declared in <unistd.h>
797 and are now also available on the Hurd.
799 * ELF thread-local storage support (TLS) now works on x86-64.
801 * The new dynamic string token $LIB is expanded in shared library names.
802 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
804 * Aldy Hernandez contributed complete software floating point support for
805 PowerPC machines with no FPU.
807 * fexecve is implemented on Linux.
809 * The `btowc' function should work at least twice as fast due to
810 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
812 * With approriate thread add-ons cancelable functions are now implemented
813 in libc.so as well. No need to call the function in libpthread. This
814 change allowed to finally disable the incorrect and expensive handling
815 of weak definition in ld.so.
817 * Yet more PLT entries in libc.so have been removed. We finally arrived
818 at the bare minimum. Startup times improved appropriately.
820 * Support for the new Linux/x86 system call interface was added. The
821 AT_SYSINFO auxiliary vector entry is recognized and handled.
822 \f
823 Version 2.3
825 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
826 charsets.
828 * iconv (the program and the interface) now accepts empty names (excluding
829 options like //TRANSLIT) to mean "use charset of current locale".
831 * localedef can now transliterate characters in strings which are not in
832 the provided charmap. The information from the input locale is used.
834 * Prelinking support was added for ELF targets. This requires additional
835 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
837 * Read-only stdio streams now use mmap to speed up operation by eliminating
838 copying and buffer underflows. To use add 'm' to the mode string of
839 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
841 * The malloc functions were completely rewritten by Wolfram Gloger based
842 on Doug Lea's malloc-2.7.0.c.
844 * Isamu Hasegawa contributed a completely new and POSIX-conformant
845 implementation of regex.
847 * Bruno Haible upgraded the iconv and locale implementation to support
848 Unicode 3.2.
850 * Contents of the LC_* and LANG environment variables in the CEN style are
851 not recognized anymore. It never was used. Change by Ulrich Drepper.
853 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
854 thread-local storage (TLS) ABI on some platforms.
855 Changes by Ulrich Drepper. SH support by Kaz Kojima.
857 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
858 EUC-JISX0213, and TSCII.
860 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
861 BSD-compatible interface for getting all network interface addresses.
862 Implementation for IPv4 by Roland McGrath.
864 * Loading of locale data is faster due to the introduction of a locale
865 archive. Implemented by Roland McGrath and Ulrich Drepper.
867 * Startup times are significantly reduced by not using exported functions
868 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
869 and Ulrich Drepper.
871 * Steven Munroe contributed a port to PowerPC64/Linux.
872 \f
873 Version 2.2.6
875 * The Hurd now uses the GNU libio implementation of stdio rather than the
876 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
878 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
879 with the same behavior as the Linux system call of the same name.
880 \f
881 Version 2.2.5
883 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
884 128-bit long double format.
886 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
887 IBM1161, and IBM1162 charsets.
889 * Andreas Jaeger contributed a port to x86-64/Linux.
891 * Peter Bruin contributed a port to PowerPC/Hurd.
893 * libc functions using I/O streams now can handle wide-oriented streams
894 as well.
896 * optimizations in the dynamic linker. Binaries created by recent binutils
897 versions start up quicker due to reduced time spent on relocations.
899 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
900 \f
901 Version 2.2.4
903 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
904 asinh, atanh, j0 for the 128-bit long double format.
906 * Bruno Haible updated all the code handling Unicode in some form to
907 support Unicode 3.1.
909 * Speed of regex for single-byte locales is back to previous levels.
910 Patch by Isamu Hasegawa.
912 * Alpha, SPARC, and IA-64 now also using floating stacks.
914 * Startup time of internationalized applications greatly improved through
915 iconv cache. Use iconvconfig to generate the cache file.
916 Contributed by Ulrich Drepper.
918 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
919 severe performance problems. Patch by David Mosberger.
921 * The Hurd port got a lot more functionality like AIO, various stdio
922 extensions, etc. Mainly done by Roland McGrath.
924 * mtrace can now lookup symbols in shared libraries.
925 \f
926 Version 2.2.3
928 * Intel's IA-64 math library is largely integrated. It provides fast and
929 accurate implementatations for most basic and standard math functions
930 in float, double, and long double format.
932 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
933 and asin for the 96-bit long double format and asin, log, tan for the
934 128-bit long double format.
936 * The beginning of a last-bit accurate math library by IBM Haifa were added.
937 The basic double functions exist today. Contributed by Abraham Ziv
938 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
939 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
941 * An asynchronous name lookup library was added. The interface is designed
942 after POSIX AIO. The proposal was circulated beforehand to get comments.
943 No negative ones came in. Implemented by Ulrich Drepper.
945 * Port to S390/64bit contributed by Martin Schwidefsky
946 <schwidefsky@de.ibm.com>.
948 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
949 of functions for Linux/IA-64.
951 * The RPC code is now thread safe. Threads can now use the same service
952 of different services at the same time. Patch by Eric Norum
953 <eric.norum@usask.ca> with some help by Ulrich Drepper.
955 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
956 family of functions for Linux/S390.
958 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
959 of functions for Linux/x86.
961 * Port to Linux/CRIS contributed by Axis Communications.
962 \f
963 Version 2.2.2
965 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
966 we can now check for namespace violations and missing declarations. The
967 result is that almost all headers are now Unix-compliant (as defined in
968 the upcoming XPG6). The negative side is that some programs might need
969 corrections, too, if they depend on the incorrect form of the headers in
970 previous versions which defined too many symbols and included too many
971 other headers.
973 * regex now handles multibyte character sets correctly.
974 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
976 * iconv (the program) does now conform to the upcoming XPG6 and handles
977 charmaps. Instead of the charset names the path of charmaps can be
978 provided and the conversion happens based on this data.
979 Contributed by Ulrich Drepper.
981 * The locale program now provides detailed information about the installed
982 locales. While
984 locale -a
986 only lists the names of the supported locales
988 locale -a --verbose
990 provides details such as country, language, and codeset name.
991 Contributed by Ulrich Drepper.
992 \f
993 Version 2.2.1
995 * The gencat program now parses the input file according to the charset
996 selected by the LC_CTYPE category. This is important for stateful
997 character sets. To make generating catalogs easier there is a way
998 to overwrite the charset selected by the locale: before the first
999 message or $ quote line the catalog can contain a line like
1001 $ codeset=ISO-8859-2
1003 to select the charset (ISO-8859-2 in this case).
1005 Implemented by Shinya Hanataka and Ulrich Drepper.
1007 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1008 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1009 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1011 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1012 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1014 * The LANGUAGE environment variable is now ignored unless the locale is
1015 changed from the default "C" locale.
1017 * The usual bug fixes.
1018 \f
1019 Version 2.2
1021 * Greg McGary added runtime support for bounds checking using gcc's
1022 new -fbounded-pointers option. ix86 target is complete. PowerPC
1023 is in progress.
1025 * Thorsten Kukuk added secure mode support to nscd.
1027 * The Berkeley db libraries have been removed.
1029 Related, the nss_db module is now in a separate package since it
1030 obviously requires a database library being available.
1032 * Wide character I/O streams implemented by Ulrich Drepper.
1034 * Functions from the extended socket API added by Ulrich Drepper.
1036 * Functions feenableexcept and fedisableexcept to control the
1037 behaviour of individual exceptions have been added by Andreas Jaeger.
1039 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1041 * The resolver code has been updated from bind 8.2.3-T5B which supports
1042 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1043 and Mark Kettenis.
1045 This change could in some situations effect backward compatibility. Since
1046 now `_res' is a thread-local instead of a global variable, modifying it
1047 in one thread does not have any effect in other threads.
1049 The resolver library was also extended to allow IPv6 as the transport
1050 protocol for the requests. This work was done by Stig Venaas.
1052 * Compatibility code for K&R C compilers has been removed from the
1053 header files. A ISO C compiler is needed to use the library
1054 (conforming to either C89 or C99 standard).
1056 * Complete rewrite of the localedef program to support multibyte character
1057 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1058 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1059 Implemented by Ulrich Drepper.
1061 Bruno Haible significantly improved the generation and use of the data
1062 structures for the wide character tables.
1064 * Plural handling in gettext implemented by Ulrich Drepper.
1066 * The utmp daemon has been removed.
1068 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1070 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1071 and Yutaka Niibe.
1073 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1075 * POSIX barriers implemented by Kaz Kylheku.
1077 * POSIX spawn function family implemented by Ulrich Drepper.
1079 * POSIX spinlocks are now available.
1081 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1083 * the configure option --enable-kernel=X.Y.Z allows to strip out
1084 compatibility for kernel versions before X.Y.Z. This is currently only
1085 implemented for Linux.
1087 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1088 field sin6_scope_id. This means that all programs using IPv6 should be
1089 recompiled. Don't expect binary compatibility with previous glibc
1090 versions.
1092 * various conversion modules for IBM character sets contributed by
1093 Masahide Washizawa.
1095 * IA-64 port by Jes Sorensen and HJ Lu.
1096 \f
1097 Version 2.1.3
1099 * bug fixes
1101 \f
1102 Version 2.1.2
1104 * bug fixes
1106 \f
1107 Version 2.1.1
1109 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1111 * New xdr functions are added; some rpc functions are now 64bit clean.
1113 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1115 * Fixed known incompatibilities with glibc 2.0.
1117 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1119 * Optimized a number of functions (especially the ELF dynamic loader).
1121 * Update timezone data files.
1123 * lots of charmaps corrections
1125 * some new locale definitions and charmaps
1127 \f
1128 Version 2.1
1130 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1131 conform to POSIX member type requirements. Symbol versions have been
1132 adjusted as needed within the library, and for direct use by applications,
1133 but there is potential for problems if third-party libraries use
1134 struct timeval as part of their interface. This does not present
1135 a problem for X and other "essential" system libraries.
1137 * An additional locale model to support C++ Standard Library locale
1138 model and probably more was implemented by Ulrich Drepper.
1140 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1141 symbol level.
1143 * Miles Bader provided the `argp' function family to support hierachical
1144 command line argument parsing, layered on top of getopt.
1146 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1148 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1149 numbers.
1151 * scanf recognizes the %a and %A format for scanning floating point numbers.
1153 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1154 information and interfaces for the available integer types.
1156 * about 130 new math functions were added to implement the ISO C9x math
1157 library.
1159 * the new header <complex.h> contains definitions of the complex math
1160 functions from ISO C 9X.
1162 * the new header <tgmath.h> defines generic macros to use complex or
1163 real valued functions.
1165 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1167 * Andreas Jaeger provided a test suite for the math library.
1169 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1171 * Ulrich Drepper added character set conversion functions (iconv).
1173 * Optimized string functions have been added.
1175 * The localedata addon is now part of glibc.
1177 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1179 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1180 daemon for NSS (nscd).
1182 Missing a better place here are some numbers on improvements. Under
1183 Linux 2.1.125 un-tar-ing the kernel sources takes
1185 user system wall
1187 using local files 12.19s 6.88s 22.91s
1189 using NIS 13.92s 8.91s 26.34s
1191 using NIS & nscd 10.37s 7.34s 25.30s
1193 using NIS+ 27.57s 30.37s 640.46s
1195 using NIS+ & nscd 10.25s 7.83s 26.51s
1197 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1199 Keep in mind that non-namelookup related operations dominate above times.
1200 It was just a common complain that using NIS+ unpacking the kernel is
1201 horribly slow.
1203 [1] The old nscd implementation is not available anymore since it was
1204 distributed with glibc up to version 2.0.98 and thus is now replaced.
1206 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1208 * Mark Kettenis provided a Hesiod NSS module.
1210 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1211 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1213 * rcmd can now handle netgroups (Dick Streefland).
1215 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1216 Bambrough.
1218 * Support for the IPv6 protocol has been added to the socket API, as per the
1219 latest draft standards.
1221 * Support for Linux 2.2 has been added.
1223 * Interface changes relative to the latest 2.0.x release:
1224 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1225 addseverity NEW: Unix98
1226 alphasort64 NEW: LFS
1227 argp_err_exit_status NEW: argp, GNU ext
1228 argp_error NEW: argp, GNU ext
1229 argp_failure NEW: argp, GNU ext
1230 argp_help NEW: argp, GNU ext
1231 argp_parse NEW: argp, GNU ext
1232 argp_program_bug_address NEW: argp, GNU ext
1233 argp_program_version NEW: argp, GNU ext
1234 argp_program_version_hook NEW: argp, GNU ext
1235 argp_state_help NEW: argp, GNU ext
1236 argp_usage NEW: argp, GNU ext
1237 authdes_create NEW: Secure RPC
1238 authdes_getucred NEW: Secure RPC
1239 authdes_pk_create NEW: Secure RPC
1240 backtrace NEW: GNU ext.
1241 backtrace_symbols NEW: GNU ext.
1242 backtrace_symbols_fd NEW: GNU ext.
1243 cacos NEW: ISO C 9x
1244 cacosf NEW: ISO C 9x
1245 cacosh NEW: ISO C 9x
1246 cacoshf NEW: ISO C 9x
1247 cacoshl NEW: ISO C 9x
1248 cacosl NEW: ISO C 9x
1249 capget NEW: kernel
1250 capset NEW: kernel
1251 carg NEW: ISO C 9x
1252 cargf NEW: ISO C 9x
1253 cargl NEW: ISO C 9x
1254 casin NEW: ISO C 9x
1255 casinf NEW: ISO C 9x
1256 casinh NEW: ISO C 9x
1257 casinhf NEW: ISO C 9x
1258 casinhl NEW: ISO C 9x
1259 casinl NEW: ISO C 9x
1260 catan NEW: ISO C 9x
1261 catanf NEW: ISO C 9x
1262 catanh NEW: ISO C 9x
1263 catanhf NEW: ISO C 9x
1264 catanhl NEW: ISO C 9x
1265 catanl NEW: ISO C 9x
1266 cbc_crypt NEW: Secure RPC
1267 ccos NEW: ISO C 9x
1268 ccosf NEW: ISO C 9x
1269 ccosh NEW: ISO C 9x
1270 ccoshf NEW: ISO C 9x
1271 ccoshl NEW: ISO C 9x
1272 ccosl NEW: ISO C 9x
1273 cexp NEW: ISO C 9x
1274 cexpf NEW: ISO C 9x
1275 cexpl NEW: ISO C 9x
1276 cimag NEW: ISO C 9x
1277 cimagf NEW: ISO C 9x
1278 cimagl NEW: ISO C 9x
1279 clearerr_locked REMOVED
1280 clntunix_create NEW: sunrpc ext
1281 clog NEW: ISO C 9x
1282 clog10 NEW: ISO C 9x
1283 clog10f NEW: ISO C 9x
1284 clog10l NEW: ISO C 9x
1285 clogf NEW: ISO C 9x
1286 clogl NEW: ISO C 9x
1287 conj NEW: ISO C 9x
1288 conjf NEW: ISO C 9x
1289 conjl NEW: ISO C 9x
1290 cpow NEW: ISO C 9x
1291 cpowf NEW: ISO C 9x
1292 cpowl NEW: ISO C 9x
1293 cproj NEW: ISO C 9x
1294 cprojf NEW: ISO C 9x
1295 cprojl NEW: ISO C 9x
1296 creal NEW: ISO C 9x
1297 crealf NEW: ISO C 9x
1298 creall NEW: ISO C 9x
1299 creat64 NEW: LFS
1300 csin NEW: ISO C 9x
1301 csinf NEW: ISO C 9x
1302 csinh NEW: ISO C 9x
1303 csinhf NEW: ISO C 9x
1304 csinhl NEW: ISO C 9x
1305 csinl NEW: ISO C 9x
1306 csqrt NEW: ISO C 9x
1307 csqrtf NEW: ISO C 9x
1308 csqrtl NEW: ISO C 9x
1309 ctan NEW: ISO C 9x
1310 ctanf NEW: ISO C 9x
1311 ctanh NEW: ISO C 9x
1312 ctanhf NEW: ISO C 9x
1313 ctanhl NEW: ISO C 9x
1314 ctanl NEW: ISO C 9x
1315 des_setparity NEW: Secure RPC
1316 ecb_crypt NEW: Secure RPC
1317 endutxent NEW: Unix98
1318 exp10 NEW: ISO C 9x
1319 exp10f NEW: ISO C 9x
1320 exp10l NEW: ISO C 9x
1321 exp2 NEW: ISO C 9x
1322 exp2f NEW: ISO C 9x
1323 exp2l NEW: ISO C 9x
1324 fattach NEW: STREAMS
1325 fdetach NEW: STREAMS
1326 fdim NEW: ISO C 9x
1327 fdimf NEW: ISO C 9x
1328 fdiml NEW: ISO C 9x
1329 feclearexcept NEW: ISO C 9x
1330 fegetenv NEW: ISO C 9x
1331 fegetexceptflag NEW: ISO C 9x
1332 fegetround NEW: ISO C 9x
1333 feholdexcept NEW: ISO C 9x
1334 feof_locked REMOVED
1335 feraiseexcept NEW: ISO C 9x
1336 ferror_locked REMOVED
1337 fesetenv NEW: ISO C 9x
1338 fesetexceptflag NEW: ISO C 9x
1339 fesetround NEW: ISO C 9x
1340 fetestexcept NEW: ISO C 9x
1341 feupdateenv NEW: ISO C 9x
1342 fflush_locked REMOVED
1343 ffsl NEW: GNU ext.
1344 ffsll NEW: GNU ext.
1345 fgetpos64 NEW: LFS
1346 fgets_unlocked NEW: GNU ext.
1347 fileno_locked REMOVED
1348 fma NEW: ISO C 9x
1349 fmaf NEW: ISO C 9x
1350 fmal NEW: ISO C 9x
1351 fmax NEW: ISO C 9x
1352 fmaxf NEW: ISO C 9x
1353 fmaxl NEW: ISO C 9x
1354 fmin NEW: ISO C 9x
1355 fminf NEW: ISO C 9x
1356 fminl NEW: ISO C 9x
1357 fmtmsg NEW: Unix98
1358 fopen64 NEW: LFS
1359 fputc_locked REMOVED
1360 fputs_unlocked NEW: GNU ext.
1361 fread_unlocked NEW: GNU ext.
1362 freopen64 NEW: LFS
1363 fseeko NEW: Unix98
1364 fsetpos64 NEW: LFS
1365 fstatfs64 NEW: LFS
1366 fstatvfs NEW: Unix98
1367 fstatvfs64 NEW: LFS
1368 ftello NEW: Unix98
1369 ftello64 NEW: LFS
1370 ftruncate64 NEW: LFS
1371 ftw64 NEW: LFS
1372 fwrite_unlocked NEW: GNU ext.
1373 gai_strerror NEW: IPv6
1374 gamma_r REMOVED
1375 gammaf_r REMOVED
1376 gammal_r REMOVED
1377 getchar_locked REMOVED
1378 getdate NEW: Unix98
1379 getdate_err NEW: Unix98
1380 getdate_r NEW: GNU ext.
1381 getmsg NEW: STREAMS
1382 getnameinfo NEW: IPv6
1383 getnetname NEW: Secure RPC
1384 getpmsg NEW: STREAMS
1385 getpt NEW: Unix98 PTY
1386 getrlimit64 NEW: LFS
1387 getutxent NEW: Unix98
1388 getutxid NEW: Unix98
1389 getutxline NEW: Unix98
1390 glob64 NEW: GNU ext.
1391 globfree64 NEW: GNU ext.
1392 gnu_get_libc_release NEW: GNU ext.
1393 gnu_get_libc_version NEW: GNU ext.
1394 grantpt NEW: Unix98 PTY
1395 host2netname NEW: Secure RPC
1396 iconv NEW: iconv
1397 iconv_close NEW: iconv
1398 iconv_open NEW: iconv
1399 if_freenameindex NEW: IPv6
1400 if_indextoname NEW: IPv6
1401 if_nameindex NEW: IPv6
1402 if_nametoindex NEW: IPv6
1403 in6addr_any NEW: IPv6
1404 in6addr_loopback NEW: IPv6
1405 inet6_isipv4mapped NEW: IPv6
1406 isastream NEW: STREAMS
1407 iswblank NEW: GNU ext.
1408 key_decryptsession NEW: Secure RPC
1409 key_decryptsession_pk NEW: Secure RPC
1410 key_encryptsession NEW: Secure RPC
1411 key_encryptsession_pk NEW: Secure RPC
1412 key_gendes NEW: Secure RPC
1413 key_get_conv NEW: Secure RPC
1414 key_secretkey_is_set NEW: Secure RPC
1415 key_setnet NEW: Secure RPC
1416 key_setsecret NEW: Secure RPC
1417 llrint NEW: ISO C 9x
1418 llrintf NEW: ISO C 9x
1419 llrintl NEW: ISO C 9x
1420 llround NEW: ISO C 9x
1421 llroundf NEW: ISO C 9x
1422 llroundl NEW: ISO C 9x
1423 log2 NEW: ISO C 9x
1424 log2f NEW: ISO C 9x
1425 log2l NEW: ISO C 9x
1426 lrint NEW: ISO C 9x
1427 lrintf NEW: ISO C 9x
1428 lrintl NEW: ISO C 9x
1429 lround NEW: ISO C 9x
1430 lroundf NEW: ISO C 9x
1431 lroundl NEW: ISO C 9x
1432 lseek64 NEW: LFS
1433 makecontext NEW: Unix98
1434 mempcpy NEW: GNU ext.
1435 mmap64 NEW: LFS
1436 moncontrol REMOVED
1437 modify_ldt NEW: kernel
1438 nan NEW: ISO C 9x
1439 nanf NEW: ISO C 9x
1440 nanl NEW: ISO C 9x
1441 nearbyint NEW: ISO C 9x
1442 nearbyintf NEW: ISO C 9x
1443 nearbyintl NEW: ISO C 9x
1444 netname2host NEW: Secure RPC
1445 netname2user NEW: Secure RPC
1446 nexttoward NEW: ISO C 9x
1447 nexttowardf NEW: ISO C 9x
1448 nexttowardl NEW: ISO C 9x
1449 nftw NEW: Unix98
1450 nftw64 NEW: LFS
1451 open64 NEW: LFS
1452 passwd2des NEW: Secure RPC
1453 pow10 NEW: GNU ext.
1454 pow10f NEW: GNU ext.
1455 pow10l NEW: GNU ext.
1456 pread NEW: Unix98
1457 pread64 NEW: LFS
1458 printf_size NEW: GNU ext.
1459 printf_size_info NEW: GNU ext.
1460 profil_counter REMOVED
1461 pthread_mutexattr_getkind_np REPLACED
1462 pthread_mutexattr_setkind_np REPLACED
1463 ptsname NEW: Unix98 PTY
1464 ptsname_r NEW: Unix98 PTY
1465 putc_locked REMOVED
1466 putchar_locked REMOVED
1467 putgrent NEW: GNU ext.
1468 putmsg NEW: STREAMS
1469 putpmsg NEW: STREAMS
1470 pututxline NEW: Unix98
1471 pwrite NEW: Unix98
1472 pwrite64 NEW: LFS
1473 readdir64 NEW: LFS
1474 readdir64_r NEW: LFS
1475 remquo NEW: ISO C 9x
1476 remquof NEW: ISO C 9x
1477 remquol NEW: ISO C 9x
1478 round NEW: ISO C 9x
1479 roundf NEW: ISO C 9x
1480 roundl NEW: ISO C 9x
1481 rtime NEW: GNU ext.
1482 scalbln NEW: ISO C 9x
1483 scalblnf NEW: ISO C 9x
1484 scalblnl NEW: ISO C 9x
1485 scandir64 NEW: LFS
1486 sendfile NEW: kernel
1487 setcontext NEW: Unix98
1488 setrlimit64 NEW: LFS
1489 setutxent NEW: Unix98
1490 sighold NEW: Unix98
1491 sigignore NEW: Unix98
1492 sigqueue NEW: POSIX.1b
1493 sigrelse NEW: Unix98
1494 sigset NEW: POSIX.1b
1495 sigtimedwait NEW: POSIX.1b
1496 sigwaitinfo NEW: POSIX.1b
1497 sincos NEW: GNU ext.
1498 sincosf NEW: GNU ext.
1499 sincosl NEW: GNU ext.
1500 statfs64 NEW: LFS
1501 statvfs NEW: Unix98
1502 statvfs64 NEW: LFS
1503 strcasestr NEW: GNU ext.
1504 strtoimax NEW: ISO C 9x
1505 strtoumax NEW: ISO C 9x
1506 strverscmp NEW: GNU ext.
1507 svcauthdes_stats NEW: Secure RPC
1508 svcunix_create NEW: sunrpc etx
1509 svcunixfd_create NEW: sunrpc ext
1510 swapcontext NEW: Unix98
1511 tcgetsid NEW: Unix98 PTY
1512 tdestroy NEW: GNU ext.
1513 tgamma NEW: ISO C 9x
1514 tgammaf NEW: ISO C 9x
1515 tgammal NEW: ISO C 9x
1516 tmpfile64 NEW: LFS
1517 trunc NEW: ISO C 9x
1518 truncate64 NEW: LFS
1519 truncf NEW: ISO C 9x
1520 truncl NEW: ISO C 9x
1521 umount2 NEW: kernel
1522 unlockpt NEW: Unix98 PTY
1523 updwtmpx NEW: Unix98
1524 user2netname NEW: Secure RPC
1525 utmpxname NEW: Unix98
1526 versionsort NEW: GNU ext.
1527 versionsort64 NEW: GNU ext.
1528 waitid NEW: Unix98
1529 wcscasecmp NEW: GNU ext.
1530 wcsncasecmp NEW: GNU ext.
1531 wcsnlen NEW: GNU ext.
1532 wcstoimax NEW: ISO C 9x
1533 wcstoll NEW: ISO C 9x
1534 wcstoull NEW: ISO C 9x
1535 wcstoumax NEW: ISO C 9x
1536 wcswcs NEW: Unix98
1537 wordexp NEW: POSIX.2
1538 wordfree NEW: POSIX.2
1539 write_profiling REMOVED
1540 xdecrypt NEW: Secure RPC
1541 xdr_authdes_cred NEW: Secure RPC
1542 xdr_authdes_verf NEW: Secure RPC
1543 xdr_cryptkeyarg NEW: Secure RPC
1544 xdr_cryptkeyarg2 NEW: Secure RPC
1545 xdr_cryptkeyres NEW: Secure RPC
1546 xdr_getcredres NEW: Secure RPC
1547 xdr_key_netstarg NEW: Secure RPC
1548 xdr_key_netstres NEW: Secure RPC
1549 xdr_keybuf NEW: Secure RPC
1550 xdr_keystatus NEW: Secure RPC
1551 xdr_netnamestr NEW: Secure RPC
1552 xdr_sizeof NEW: Secure RPC
1553 xdr_unixcred NEW: sunrpc ext
1554 xencrypt NEW: Secure RPC
1555 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1556 \f
1557 Version 2.0.6
1559 * more bug fixes
1561 \f
1562 Version 2.0.5
1564 * more bug fixes
1566 * inet_ntoa is thread-safe
1568 * updwtmp is moved from libutil to libc
1570 * rewrite of cbrt function
1572 * update of timezone data
1573 \f
1574 Version 2.0.4
1576 * more bug fixes
1577 \f
1578 Version 2.0.3
1580 * more bug fixes
1581 \f
1582 Version 2.0.2
1584 * more bug fixes
1586 * add atoll function
1588 * fix complex problems in Berkeley DB code
1590 * fix math functions
1591 \f
1592 Version 2.0.1
1594 * fixed lots of header problems (especially Linux/GNU specific)
1596 * dynamic loader preserves all registers
1598 * Roland McGrath provided support for handling of auxiliary objects in
1599 the ELF dynamic loader.
1601 * support for parallel builds is improved
1602 \f
1603 Version 2.0
1605 * GNU extensions are no longer declared by default. To enable them you
1606 must define the macro `_GNU_SOURCE' in your program or compile with
1607 `-D_GNU_SOURCE'.
1609 * The library has changed from using GNU ld symbol aliases to using weak
1610 symbols where available. The ELF object file format supports weak
1611 symbols; GNU ld also supports weak symbols in the a.out format. (There
1612 is also now support for other GNU ld extensions in ELF. Use the
1613 `--with-elf' option to configure to indicate you have ELF, and
1614 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1615 of many files which contained only symbol aliases, reducing the size of
1616 the source and the compiled library; many other files were renamed to
1617 less cryptic names previously occupied by the symbol alias files.
1618 There is a new header file <elf.h> for programs which operate on
1619 files in the ELF format.
1621 * Converted to Autoconf version 2, so `configure' has more options.
1622 Run `configure --help' to see the details.
1624 * The library can now be configured to build profiling, highly-optimized
1625 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1626 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1627 `configure' enable building these extra libraries. The shared library is
1628 built by default when using both ELF and GNU ld. When shared libraries
1629 are enabled, the new library `-ldl' is available for arbitrary run-time
1630 loading of shared objects; its interface is defined in <dlfcn.h>. The
1631 new header file <link.h> gives access to the internals of the run-time
1632 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1633 application of same name on other systems and it provides information
1634 about dynamically linked binaries.
1636 * The C library now provides the run-time support code for profiling
1637 executables compiled with `-pg'. Programs can control the profiling code
1638 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1639 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1640 the support for this file format was contributed by David Mosberger-Tang.
1642 * The math code has been replaced with a math library based on fdlibm from
1643 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1644 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1645 functions. The math functions now reside in a separate library, so
1646 programs using them will need to use `-lm' their linking commands.
1648 * John C. Bowman contributed optimized ix87 assembler inline functions.
1650 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1651 mechanism similar to that found in Solaris 2. This is now used for the
1652 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1653 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1654 file controls what services are used for each individual database. This
1655 works by loading shared libraries with names specified in `nsswitch.conf',
1656 so service modules can be changed or added at any time without even
1657 relinking any program. Currently there are the file, db, and NIS based
1658 NSS services available.
1660 * The new functions `strtoq' and `strtouq' parse integer values from
1661 strings, like `strtol' and `strtoul', but they return `long long int' and
1662 `unsigned long long int' values, respectively (64-bit quantities).
1664 * The new functions `strtof' and `strtold' parse floating-point values from
1665 strings, like `strtod', but they return `float' and `long double' values,
1666 respectively (on some machines `double' and `long double' are the same).
1668 * Ulrich Drepper has contributed new implementations of the floating-point
1669 printing and reading code used in the `printf' family of functions and
1670 `strtod', `strtof', and `strtold'. These new functions are perfectly
1671 accurate, and much faster than the old ones.
1673 * The implementation of the POSIX locale model was completely rewritten by
1674 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1675 to compile the POSIX locale definition.
1677 * The former dummy implementations of the strcoll and strxfrm function are
1678 now replaced by fully functional code contributed by Ulrich Drepper. The
1679 collation information comes from the POSIX locale definitions.
1681 * The new header <langinfo.h> defines an interface for accessing
1682 various locale-dependent data (using the locale chosen with `setlocale').
1684 * Ulrich Drepper has contributed a new suite of functions for operation on
1685 wide-character and multibyte-character strings, in <wchar.h>;
1686 and classification and case conversion of wide characters, in <wctype.h>.
1687 These new functions are conforming to the ISO C, Amendement 1 specification.
1689 * There is now a second implementation of the standard I/O library available.
1690 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1691 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1693 * You can now use positional parameter specifications in format strings
1694 for the `printf' and `scanf' families of functions. For example,
1695 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1696 ``Number 6, Mr Jones''. This is mainly useful when providing different
1697 format strings for different languages, whose grammars may dictate
1698 different orderings of the values being printed. To support this
1699 feature, the interface for `register_printf_handler' has changed; see
1700 the header file <printf.h> for details.
1702 * The `printf' and `scanf' families of functions now understand a new
1703 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1704 to group numbers as indicated by the locale; for `scanf' and friends, this
1705 says to accept as valid only a number with all the proper grouping
1706 separators in the right places. In the default "C" locale, numbers are
1707 not grouped; but locales for specific countries will define the usual
1708 conventions (i.e. separate thousands with `,' in the US locale).
1710 * The pgrp functions have been regularized, slightly incompatibly but much
1711 less confusingly. The core functions are now `getpgid' and `setpgid',
1712 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1713 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1714 provided for compatibility. There is no longer an incompatible `getpgrp'
1715 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1717 * The new header file <fts.h> and suite of functions simplify programs that
1718 operate on directory trees. This code comes from 4.4 BSD.
1720 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1721 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1722 NSS scheme used in glibc.
1724 * There is a new malloc debugging hook `__memalign_hook'.
1726 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1727 `unsigned int' in <sys/types.h>. These are for compatibility only and
1728 their use is discouraged.
1730 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1731 done differently, so that it works even without GNU ld.
1733 * New function `euidaccess' checks allowed access to a file like `access',
1734 but using the effective IDs instead of the real IDs.
1736 * The time zone data files have been updated for the latest and greatest
1737 local time conventions of the countries of the world.
1739 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1740 see <dirent.h>.
1742 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1743 for formatting floating-point numbers. They are provided only for
1744 compatibility; new programs should use `sprintf' instead. There are
1745 also equivalent function for the `long double' floating-point type and
1746 all functions also exist in a reentrant form.
1748 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1749 functions for maintaining the login-record files (primarily of use to
1750 system programs such as `login'), and convenient functions for
1751 allocating and initializing a pseudo-terminal (pty) device.
1753 * Ulrich Drepper has contributed new support for System V style
1754 shared memory and IPC on systems that support it.
1756 * Ulrich Drepper has contributed several miscellaneous new functions found
1757 in System V: The `hsearch' family of functions provide an effective
1758 implementation of hash tables; `a64l' and `l64a' provide a very simple
1759 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1760 number generator.
1762 * Ulrich Drepper has contributed new reentrant counterparts for the
1763 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1765 * Ulrich Drepper has contributed new, highly-optimized versions of several
1766 string functions for the i486/Pentium family of processors.
1768 * Ulrich Drepper has updated the Linux-specific code, based largely
1769 on work done in Hongjiu Lu's version of GNU libc for Linux.
1770 The GNU library now supports Linux versions 2.0.10 and later,
1771 using the ELF object file format (i[3456]86-*-linux).
1773 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1775 * David Mosberger-Tang and Richard Henderson have ported the C library
1776 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1777 dynamic linking support for ELF/Alpha.
1779 * Richard Henderson contributed several Alpha optimized assembler function
1780 for arithmetic and string handling.
1782 * Ulrich Drepper has contributed a new set of message catalog functions to
1783 support multiple languages using the <libintl.h> interface, for use with
1784 his new package GNU gettext. Translation volunteers have contributed
1785 catalogs of the library's messages in Spanish, German, and Korean.
1787 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1788 program and the `catgets' function for reading the catalog files it
1789 creates. (The <libintl.h> interface is preferred; we include the
1790 <nl_types.h> interface using `catgets' only for source compatibility with
1791 programs already written to use it.)
1793 * New header file <values.h> gives SVID-compatible names for <limits.h>
1794 constants.
1796 * Various new macros, declarations, and small header files for compatibility
1797 with 4.4 BSD.
1799 * New function `group_member' is a convenient way to check if a process has
1800 a given effective group ID.
1802 * When using GCC 2.7 and later, the socket functions are now declared in a
1803 special way so that passing an argument of type `struct sockaddr_in *',
1804 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1805 `struct sockaddr *' type, does not generate a type-clash warning.
1807 * New function `error' declared in header file <error.h> is a convenient
1808 function for printing error messages and optionally exiting; this is the
1809 canonical function used in GNU programs. The new functions `err', `warn',
1810 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1811 doing the same thing.
1813 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1814 POSIX.2 `glob' function to do ~ and {...} expansion.
1816 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1817 `clearenv' which is used in POSIX.9 is also available.
1819 * New function `getsid' returns session ID number on systems that support it.
1821 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1822 files <db.h> and <mpool.h> provide a rich set of functions for several
1823 types of simple databases stored in memory and in files, and <ndbm.h> is
1824 an old `ndbm'-compatible interface using the `db' functions. Link with
1825 `-ldb' to get these functions.
1827 * New macro `strdupa' copies a string like `strdup', but uses local stack
1828 space from `alloca' instead of dynamic heap space from `malloc'.
1830 * New function `strnlen' is like `strlen' but searches only a given maximum
1831 number of characters for the null terminator. `stpncpy', `strndup' and
1832 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1833 function.
1835 * New function `statfs' in header <sys/statfs.h>.
1837 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1838 provide convenient functions for operating on blocks of null-terminated
1839 strings.
1841 * A new suite of functions in <utmp.h> handle all the details of reading
1842 and writing the utmp file.
1844 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1845 Thorsten Kukuk.
1847 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1848 completely POSIX compliant and also implemented the extended functionality
1849 to handle alternate digit representation and alternate era date formats.
1851 * Ulrich Drepper provided an implementation of the `strptime' function
1852 defined in XPG4.2 which transforms a string into a `struct tm' value.
1854 * Paul Eggert provided the tzselect shell script as part of the timezone
1855 code. The shell script makes it easy to select the correct timezone
1856 specification.
1858 * The implementation of the malloc family of functions is completely replaced
1859 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1860 The implementation uses the mmap function (if available) and it is
1861 optimized for the use in multi threaded programs.
1863 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1864 functions. This new functionality is usable by specifying a special
1865 salt string and it is compatible with implementation on *BSD systems.
1867 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1868 `getsubopt' to handle second level command line options, `bsd_signal'
1869 to access BSD style `signal' functionality, the obsolete `regexp' style
1870 expression matcher.
1872 * the `lchown' function is available on system which support this
1873 functionality.
1875 * The implementation of the shadow password handling function was contributed
1876 by Ulrich Drepper.
1878 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1880 * POSIX.1g support was added. The <sys/select.h> header is available,
1881 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1882 implementation of `getaddrinfo'.
1883 \f
1884 Version 1.09
1886 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1888 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1889 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1891 * The new function `daemon' from 4.4 BSD is useful for server programs that
1892 want to put themselves in the background.
1894 * Joel Sherrill has contributed support for several standalone boards that
1895 run without an operating system.
1897 * `printf', `scanf' and friends now accept a `q' type modifier for long
1898 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1900 * All of the code taken from BSD (notably most of the math and networking
1901 routines) has been updated from the BSD 4.4-Lite release.
1903 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1905 * The new functions `getdomainname' and `setdomainname' fetch or change the
1906 YP/NIS domain name. These are system calls which exist on systems which
1907 have YP (aka NIS).
1909 * The time zone data files have been updated for the latest international
1910 conventions.
1912 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1913 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1914 \f
1915 Version 1.08
1917 * The C library now includes support for Sun RPC, from Sun's free
1918 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1919 are included. (There is still no support for YP.)
1921 * Tom Quinn has contributed a port of the C library to SGI machines running
1922 Irix 4 (mips-sgi-irix4).
1924 * The new `lockf' function is a simplified interface to the locking
1925 facilities of `fcntl', included for compatibility.
1927 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1929 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1931 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1932 compatibility.
1934 * The error message printed by `assert' for a failed assertion now includes
1935 the name of the program (if using GNU ld) and the name of the calling
1936 function (with versions of GCC that support this).
1938 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1940 * The library now includes the <sys/mman.h> header file and memory
1941 management functions `mmap', `munmap', `mprotect', `msync', and
1942 `madvise', on systems that support those facilities.
1944 * The interface for `mcheck' has changed slightly: the function called to
1945 abort the program when an allocation inconsistency is detected now takes
1946 an argument that indicates the type of failure. The new function
1947 `mprobe' lets you request a consistency check for a particular block at
1948 any time (checks are normally done only when you call `free' or `realloc'
1949 on a block).
1951 * It is now possible to easily cross-compile the C library, building on one
1952 system a library to run on another machine and/or operating system. All
1953 you need to do is set the variable `HOST_CC' in `configparms' to the
1954 native compiler for programs to run on the machine you are building on (a
1955 few generator programs are used on Unix systems); set `CC' to the
1956 cross-compiler.
1958 * The new function `fexecve' (only implemented on the GNU system) executes
1959 a program file given a file descriptor already open on the file.
1960 \f
1961 Version 1.07
1963 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1964 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1966 * You can set the variable `libprefix' in `configparms' to specify a prefix
1967 to be prepended to installed library files; this makes it easy to install
1968 the GNU C library to be linked as `-lgnuc' or whatever.
1970 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1971 copies a limited number of characters from a string, and returns the
1972 address of the last character written.
1974 * You no longer need to check for whether the installed `stddef.h' is
1975 compatible with the GNU C library. configure now checks for you.
1977 * You can now define a per-stream `fileno' function to convert the
1978 stream's cookie into an integral file descriptor.
1980 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1981 allocates zero bytes of storage, and returns a unique pointer which
1982 you can pass to `realloc' or `free'. The behavior is undefined if
1983 you dereference this pointer.
1985 * The C library now runs on Sony NEWS m68k machines running either
1986 NewsOS 3 or NewsOS 4.
1988 * The new `syscall' function is a system-dependent primitive function
1989 for invoking system calls. It has the canonical behavior on Unix
1990 systems, including unreliable return values for some calls (such as
1991 `pipe', `fork' and `getppid').
1993 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1994 to `EAGAIN', which is the preferred name. On systems whose kernels
1995 use two distinct codes, the C library now translates EWOULDBLOCK to
1996 EAGAIN in every system call function.
1997 \f
1998 Version 1.06
2000 * The GNU C Library Reference Manual is now distributed with the library.
2001 `make dvi' will produce a DVI file of the printed manual.
2002 `make info' will produce Info files that you can read on line using C-h i
2003 in Emacs or the `info' program.
2004 Please send comments on the manual to bug-glibc-manual@gnu.org.
2006 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2008 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2010 * Jason Merrill has contributed a port to the Sequent Symmetry running
2011 Dynix version 3 (i386-sequent-dynix).
2013 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2014 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2016 * New function `memory_warnings' lets you arrange to get warnings when
2017 malloc is running out of memory to allocate, like Emacs gives you.
2019 * The C library now contains the relocating allocator used in Emacs 19 for
2020 its editing buffers. This allocator (ralloc) minimizes allocation
2021 overhead and fragmentation by moving allocated regions around whenever it
2022 needs to. You always refer to a ralloc'd region with a "handle" (a
2023 pointer to a pointer--an object of type `void **').
2025 * There is a new `printf' format: `%m' gives you the string corresponding
2026 to the error code in `errno'.
2028 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2029 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2030 pass, the `a' modifier says to fill in a `char **' you pass with a
2031 malloc'd string.
2033 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2034 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2035 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2037 * `mkstemp' is a traditional Unix function to atomically create and open a
2038 uniquely-named temporary file.
2039 \f
2040 Version 1.05
2042 * The standard location for the file that says what the local timezone is
2043 has changed again. It is now `/usr/local/etc/localtime' (or more
2044 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2046 * The distribution no longer contains any files with names longer than 14
2047 characters.
2049 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2050 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2052 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2053 \f
2054 Version 1.04
2056 * The configuration process has changed quite a bit. The `configure'
2057 script is now used just like the configuration scripts for other GNU
2058 packages. The `sysdeps' directory hierarchy is much rearranged.
2059 The file `INSTALL' explains the new scheme in detail.
2061 * The header files no longer need to be processed into ANSI C and
2062 traditional C versions. There is just one set of files to install, and
2063 it will work with ANSI or old C compilers (including `gcc -traditional').
2065 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2066 MIPS DECStation running Ultrix 4.
2068 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2069 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2070 made itself into a shared library.
2072 * Yet further improved support for the i386, running 4.3 BSD-like systems
2073 (such as Mach 3 with the Unix single-server), or System V.
2075 * New function `strncasecmp' to do case-insensitive string comparison
2076 with limited length.
2078 * New function `strsep' is a reentrant alternative to `strtok'.
2080 * New functions `scandir' and `alphasort' for searching directories.
2082 * New function `setenv' is a better interface to `putenv'.
2084 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2085 function for traversing a directory tree.
2087 * The GNU obstack package is now also part of the C library.
2088 The new function `open_obstack_stream' creates a stdio stream that
2089 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2090 formatted output directly to an obstack.
2092 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2093 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2095 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2097 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2098 things to your strings.
2100 * There are some new test programs: test-fseek, testmb, and testrand.
2102 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2103 These ports are not finished, but are a good starting place for really
2104 supporting those systems.
2106 * `/etc/localtime' is now the standard location for the file that says what
2107 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2108 This follows the general principle that `/etc' is the place for all local
2109 configuration files.
2111 * The C library header files now use `extern "C"' when used by the C++
2112 compiler, so the C library should now work with C++ code.
2114 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2115 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2116 in <strings.h>.)
2118 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2119 function which uses the `merge sort' algorithm, and is said to be
2120 significantly faster than the old GNU `qsort' function. Merge sort is
2121 now the standard `qsort' function. The new algorithm can require a lot
2122 of temporary storage; so, the old sorting function is called when the
2123 required storage is not available.
2125 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2126 provides the Unix `crypt' function, plus some other entry points.
2128 * The code and header files taken from 4.4 BSD have been updated with the
2129 latest files released from Berkeley.
2130 \f
2131 ----------------------------------------------------------------------
2132 Copyright information:
2134 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2136 Permission is granted to anyone to make or distribute verbatim copies
2137 of this document as received, in any medium, provided that the
2138 copyright notice and this permission notice are preserved,
2139 thus giving the recipient permission to redistribute in turn.
2141 Permission is granted to distribute modified versions
2142 of this document, or of portions of it,
2143 under the above conditions, provided also that they
2144 carry prominent notices stating who last changed them.
2145 \f
2146 Local variables:
2147 version-control: never
2148 fill-column: 76
2149 End: