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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, 14042, 14151, 14154, 14157, 14173, 14283, 14328, 14331, 14337,
13 14347, 14349
15 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
16 Optimized versions of memcpy, memset, and memcmp added for System z10 and
17 zEnterprise z196.
18 Implemented by Andreas Krebbel.
20 * The new function secure_getenv allows secure access to the environment,
21 returning NULL if running in a SUID/SGID process. This function replaces
22 the internal function __secure_getenv.
24 \f
25 Version 2.16
27 * The following bugs are resolved with this release:
29 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
30 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
31 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
32 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
33 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
34 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
35 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
36 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
37 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
38 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
39 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
40 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
41 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
42 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
43 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
44 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
45 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
46 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
47 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
48 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
49 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
50 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
51 14278
53 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
54 configuring glibc with:
55 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
56 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
57 Implemented by H.J. Lu.
59 * ISO C11 support:
61 + define static_assert
63 + do not declare gets
65 + declare at_quick_exit and quick_exit also for ISO C11
67 + aligned_alloc. NB: The code is deliberately allows the size parameter
68 to not be a multiple of the alignment. This is a moronic requirement
69 in the standard but it is only a requirement on the caller, not the
70 implementation.
72 + timespec_get added
74 + uchar.h support added
76 + CMPLX, CMPLXF, CMPLXL added
78 Implemented by Ulrich Drepper.
80 * Support for the IA-64 has been moved to ports.
82 * Remove support for anything but ELF binary format
84 * Checking versions of poll, ppoll added.
85 Implemented by Ulrich Drepper.
87 * More generic and 64-bit performance optimizations to math functions.
88 Implemented by Ulrich Drepper.
90 * New configure option --enable-obsolete-rpc makes the deprecated RPC
91 headers and functions available at compile time as they were before
92 version 2.14. This option will be removed at some time in the future
93 after the TI-RPC library becomes fully sufficient for the needs of
94 existing applications.
96 * Compatibility code for Linux kernel versions before 2.4 has been removed.
97 Note that glibc is not expected to work with any Linux kernel version
98 before 2.6.
100 * New header <sys/auxv.h> and function getauxval allowing easy access to
101 the AT_* key-value pairs passed from the Linux kernel. The header also
102 defines the HWCAP_* bits associated with the AT_HWCAP key.
104 * New locales: mag_IN
106 * New configure option --enable-systemtap builds SystemTap static probes
107 into libc for setjmp and longjmp and into libpthread for various operations.
108 So far the setjmp/longjmp probes and some of the libpthread probes are
109 provided only for i*86 and x86_64.
110 Implemented by Roland McGrath and Rayson Ho.
112 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
114 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
115 and Will Schmidt.
117 * More optimized functions for SPARC. Implemented by David S. Miller.
119 * Improved support for cross-compilation, especially bootstrap builds
120 without a previously built glibc.
122 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
123 Chris Metcalf from Tilera.
125 * Support for the old ARM ABI has been removed from ports. Only the EABI is
126 now supported for ARM processors.
128 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
129 as the name of the dynamic linker, to distinguish it from the
130 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
132 * Support for CRIS has been removed from ports.
134 * A new class of installed header has been documented for low-level
135 platform-specific functionality. PowerPC added the first instance with a
136 function to provide time base register access. Contributed by Tulio
137 Magno Quites Machado Filho.
139 * ix86 configurations now install header files that are consistent with
140 what x86-64 configurations install. These same header files can be used
141 for -m32, -m64, or -mx32 builds.
142 Contributed by H.J. Lu.
144 * Math library bug fixes. A thorough audit of all open math library bugs was
145 conducted by Joseph Myers. Significant progress was made on many math
146 library bugs resulting in more accurate exceptions and function results.
147 Many thanks to all those that contributed including Andreas Jaeger for his
148 patch review and work on the x87 trigonometric instruction issues.
150 * Timezone data is no longer installed. Timezone-related binaries and scripts
151 will continue to be installed. Users should obtain their timezone data from
152 their distribution provider or from the tzdata package at
153 <ftp://munnari.oz.au/pub/>.
154 \f
155 Version 2.15
157 * The following bugs are resolved with this release:
159 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
160 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
161 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
162 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
163 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
164 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
165 13484, 13506, 13515, 13523, 13524, 13538, 13540
167 * New program pldd to list loaded object of a process
168 Implemented by Ulrich Drepper.
170 * Add nss_db support back to glibc. No more dependency on Berkeley db
171 and support for initgroups lookups.
172 Implemented by Ulrich Drepper.
174 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
175 Contributed by HJ Lu.
177 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
178 Contributed by HJ Lu.
180 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
181 on x86-32 and x86-64.
182 Contributed by Liubov Dmitrieva.
184 * Optimized strchr and strrchr for SSE on x86-32.
185 Contributed by Liubov Dmitrieva.
187 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
188 for x86-64 and x86-32.
189 Contributed by Liubov Dmitrieva.
191 * New interfaces: scandirat, scandirat64
192 Implemented by Ulrich Drepper.
194 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
195 Implemented by Ulrich Drepper.
197 * nscd now also caches the netgroup database.
198 Implemented by Ulrich Drepper.
200 * Integrate libm with gcc's -ffinite-math-only option.
201 Implemented by Ulrich Drepper.
203 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
204 to math functions. Implemented by Ulrich Drepper.
206 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
207 Implemented by Ulrich Drepper.
209 * New Linux interfaces: process_vm_readv, process_vm_writev
211 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
212 Implemented by Ulrich Drepper.
214 * Optimized nearbyint and strcasecmp for PPC.
215 Implemented by Adhemerval Zanella.
217 * New locales: bho_IN, unm_US, es_CU, ta_LK
218 \f
219 Version 2.14
221 * The following bugs are resolved with this release:
223 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
224 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
225 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
226 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
227 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
228 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
229 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
230 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
231 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
232 12795, 12811, 12813, 12814, 12841
234 * The RPC implementation in libc is obsoleted. Old programs keep working
235 but new programs cannot be linked with the routines in libc anymore.
236 Programs in need of RPC functionality must be linked against TI-RPC.
237 The TI-RPC implementation is IPv6 enabled and there are other benefits.
239 Visible changes of this change include (obviously) the inability to link
240 programs using RPC functions without referencing the TI-RPC library and the
241 removal of the RPC headers from the glibc headers.
242 Implemented by Ulrich Drepper.
244 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
245 syncfs, setns, sendmmsg
247 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
248 yue_HK, lij_IT, mhr_RU
250 * New encodings: CP770, CP771, CP772, CP773, CP774
252 * New program sotruss to trace calls through PLTs
253 Implemented by Ulrich Drepper.
255 * The malloc hook implementation is marked deprecated and will be removed
256 from the default implementation in the next version. The design never
257 worked ever since the introduction of threads. Even programs which do
258 not create threads themselves can use multiple threads created internally.
259 \f
260 Version 2.13
262 * The following bugs are resolved with this release:
264 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
265 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
266 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
267 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
268 12378, 12394, 12397
270 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
272 * POWER7 optimizations: memset, memcmp, strncmp
274 * New optimized string functions for x86-64: strnlen (SSE2),
275 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
276 Implemented by Ulrich Drepper.
277 \f
278 Version 2.12
280 * The following bugs are resolved with this release:
282 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
283 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
284 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
285 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
286 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
287 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
288 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
289 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
291 * New interfaces: pthread_getname_np, pthread_setname_np
293 * New Linux interface: recvmmsg
295 * STT_GNU_IFUNC implemented for Sparc by David Miller.
297 * The dynamic linker now recognizes supported ABI versions from the
298 EI_ABIVERSION field in the ELF header.
299 Implemented by Ulrich Drepper.
301 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
302 will not be used to fill in password fields in the passwd.byname replies.
303 Instead it is used to synthesize the shadow.byname table, should it be
304 missing. This is a useful mode in some installations involving Solaris.
305 Implemented by Ulrich Drepper.
307 * New locales: kok_IN, sq_MK, cv_RU
308 \f
309 Version 2.11
311 * The following bugs are resolved with this release:
313 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
314 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
315 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
316 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
317 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
318 10789, 10817, 10823, 10840, 10847
320 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
321 mkostemps64
322 Implemented by Ulrich Drepper.
324 * Checking version of longjmp added that fails if an uninitialized stack
325 frame would be created. Implemented by Ulrich Drepper.
327 * STT_GNU_IFUNC is now supported in static executables.
328 Implemented by H.J. Lu.
330 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
332 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
333 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
334 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
335 Contributed by H.J. Lu.
337 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
338 Implemented by Ulrich Drepper.
340 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
341 strstr, strcasestr.
342 Contributed by H.J. Lu.
344 * Support for fma instruction in AVX on x86-64.
345 Implemented by H.J. Lu and Ulrich Drepper.
347 * AVX support in x86-64 auditing support in ld.so.
348 Implemented by H.J. Lu.
350 * STB_GNU_UNIQUE support added.
351 Implemented by Ulrich Drepper.
353 * Implement second fallback mode for optimized DNS lookup for even more
354 broken environments. If two requests from the same port are not
355 handled correctly close the socket and open a new one before sending
356 the second request. The 'single-request-reopen' option in /etc/resolv.conf
357 can be used to select this mode right away, instead of rediscovering the
358 necessity is every process again.
359 Implemented by Ulrich Drepper.
361 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
362 Implemented by Adam Tkac.
364 * Optimized iconv conversions for S390x.
365 Implemented by Andreas Krebbel.
367 * Using condvars with PI mutexes is now more efficient due to kernel
368 support for requeueing to PI futexes. NPTL support added for x86-64.
369 Implemented by Ulrich Drepper.
371 * New locales: ps_AF, my_MM
372 \f
373 Version 2.10
375 * The following bugs are resolved with this release:
377 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
378 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
379 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
380 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
381 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
383 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
384 Implemented by Ulrich Drepper.
386 * New Linux interfaces: accept4, fallocate, fallocate64.
387 Implemented by Ulrich Drepper.
389 * Correct declarations of string function when used in C++ code. This
390 could lead to compile errors for invalid C++ code.
392 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
393 now in POSIX.
395 * New POSIX 2008 interface: psiginfo
396 Implemented by Ulrich Drepper.
398 * New ISO C++1x interfaces: quick_exit, at_quick_exit
399 Implemented by Ulrich Drepper.
401 * Support for selecting between multiple function definitions at runtime
402 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
404 * The libcrypt library can now use the hash function implementations in
405 NSS. Implemented by Ulrich Drepper.
407 * The malloc implementation can be compiled to be less memory efficient
408 but higher performing in multi-threaded programs.
409 Implemented by Ulrich Drepper.
411 * New locales: nan_TW@latin, ks_IN
413 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
414 Implemented by Ulrich Drepper.
416 * Extended printf hook support. It is possible to use user-defined types
417 and extend existing format specifiers.
418 Implemented by Ulrich Drepper.
420 * Handling for group shadow files has been added.
421 Implemented by Ulrich Drepper.
423 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
424 servers (the case, e.g., for some people using the built-in DNS
425 server in ADSL modems/routers). There is a once-per-process timeout
426 in case of a broken server. To avoid it, users can run nscd or put
427 'options single-request' in /etc/resolv.conf.
428 Implemented by Ulrich Drepper.
429 \f
430 Version 2.9
432 * The following bugs are resolved with this release:
434 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
435 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
436 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
437 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
438 6968, 6974, 6980, 6995, 7008, 7009, 7029
440 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
441 up at the same time. Implemented by Ulrich Drepper.
443 * TLS descriptors for LD and GD on x86 and x86-64.
444 Implemented by Alexandre Oliva.
446 * getaddrinfo now handles DCCP and UDPlite.
447 Implemented by Ulrich Drepper.
449 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
450 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
451 Implemented by Ulrich Drepper.
453 * New implementation of memmem, strstr, and strcasestr which is O(n).
454 Implemented by Eric Blake.
456 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
458 * Implement "e" option for popen to open file descriptor with the
459 close-on-exec flag set. Implemented by Ulrich Drepper.
461 * Implement "b" mode for fmemopen. In this mode writes writes don't
462 implicitly add a NUL byte and seeks from the end of the buffer really
463 use the buffer end, not the string length as the basis.
464 Implemented by Ulrich Drepper.
466 * Many functions, exported and internal, now atomically set the close-on-exec
467 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
469 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
470 Sinhala)
471 Implemented by Pravin Satpute.
473 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
474 \f
475 Version 2.8
477 * The following bugs are resolved with this release:
479 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
480 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
481 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
482 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
483 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
484 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
485 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
487 * New locales: bo_CN, bo_IN, shs_CA.
489 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
491 * Sorting rules for some Indian languages (Devanagari and Gujarati).
492 Implemented by Pravin Satpute.
494 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
496 * nscd caches now all timeouts for DNS entries
497 Implemented by Ulrich Drepper.
499 * nscd is more efficient and wakes up less often.
500 Implemented by Ulrich Drepper.
502 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
503 vdprintf, and obstack_vprintf.
504 Implemented by Jakub Jelinek.
506 * Faster memset for x86-64.
507 Implemented by Harsha Jagasia and H.J. Lu.
509 * Faster memcpy on x86.
510 Implemented by Ulrich Drepper.
512 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
513 Implemented by Ulrich Drepper.
515 * Faster sqrt and sqrtf implemention for some PPC variants.
516 Implemented by Steven Munroe.
517 \f
518 Version 2.7
520 * The following bugs are resolved with this release:
522 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
523 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
524 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
525 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
526 5071, 5103, 5104, 5112, 5113, 5184, 5186
528 * More checking functions: fread, fread_unlocked, open*, mq_open.
529 Implemented by Jakub Jelinek and Ulrich Drepper.
531 * Extend fortification to C++. Implemented by Jakub Jelinek.
533 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
534 by not recognizing 'a' as a modifier when those specs are requested.
535 Implemented by Jakub Jelinek.
537 * PPC optimizations to math and string functions.
538 Implemented by Steven Munroe.
540 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
541 options to be passed. Implemented by Ulrich Drepper.
543 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
545 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
546 Implemented by Ulrich Drepper.
548 * Handle private futexes in the NPTL implementation.
549 Implemented by Jakub Jelinek and Ulrich Drepper.
551 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
552 Implemented by Roland McGrath and Ulrich Drepper.
554 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
556 * SHA-256 and SHA-512 based password encryption.
557 Implemented by Ulrich Drepper.
559 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
560 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
561 yo_NG.
563 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
564 Implemented by Ulrich Drepper.
565 \f
566 Version 2.6
568 * The following bugs are resolved with this release:
570 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
571 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
572 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
573 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
574 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
575 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
576 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
577 4702, 4858
579 * New Linux interfaces: epoll_pwait, sched_getcpu.
581 * New generic interfaces: strerror_l.
583 * nscd can now cache the services database. Implemented by Ulrich Drepper.
584 \f
585 Version 2.5
587 * The following bugs are resolved with this release:
589 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
590 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
591 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
592 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
593 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
594 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
595 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
596 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
597 3225, 3251, 3252, 3253, 3273
599 * For Linux, the sorting of addresses returned by getaddrinfo now also
600 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
601 Implemented by Ulrich Drepper.
603 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
604 Implemented by Ulrich Drepper.
606 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
608 * New iconv module for MIK. Contributed by Alexander Shopov.
610 * For sites with broken group and/or passwd database, the auto-propagate
611 option of nscd can prevent creating ID lookup entries from the results
612 of a name lookup and vice versa. This usually is no problem but some
613 site might have problems with the default behavior.
614 Implemented by Ulrich Drepper.
616 * Iterating over entire database in NIS can be slow. With the
617 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
618 to trade time for memory. The entire database will be read at once.
619 Implemented by Ulrich Drepper.
621 * The interfaces introduced in RFC 3542 have been implemented by
622 Ulrich Drepper.
624 * Support for the new ELF hash table format was added by Ulrich Drepper.
626 * Support for priority inheritance mutexes added by Jakub Jelinek and
627 Ulrich Drepper.
629 * Support for priority protected mutexes added by Jakub Jelinek.
631 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
632 or_IN, csb_PL, fy_NL, sr_ME.
633 \f
634 Version 2.4
636 * More overflow detection functions.
638 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
639 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
641 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
642 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
643 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
644 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
645 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
646 by Masahide Washizawa.
648 * It is now possible to install audit libraries for the dynamic linker using
649 LD_AUDIT. Implemented by Ulrich Drepper.
651 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
652 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
653 For a libc and libpthread that works well on Linux 2.4 kernels, we
654 recommend using the stable 2.3 branch.
656 * The new function open_wmemstream acts like open_memstream,
657 but uses a wchar_t wide character buffer.
659 * The new function ppoll is an improved version of poll, similar to pselect.
661 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
662 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
663 renameat, unlinkat, linkat, symlinkat, readlinkat.
665 * New Linux kernel system calls: unshare,
666 inotify_init, inotify_add_watch, inotify_rm_watch.
668 * The euidaccess function is now also known by the alias eaccess,
669 for compatibility with some other systems.
671 * Timezone data updated to 2006b version.
672 \f
673 Version 2.3.6
675 * The following bugs are resolved with this release:
677 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
678 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
679 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
680 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
681 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
682 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
684 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
686 * As of this release, GCC 4 can be used to compile the C Library.
688 * Timezone data updated to 2005m version.
689 \f
690 Version 2.3.5
692 * The following bugs are resolved with this release:
694 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
695 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
696 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
697 777, 787, 821, 822, 823, 825
699 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
700 \f
701 Version 2.3.4
703 * Support for RFC 3678. Real implementations exist only for Linux so far.
704 Implemented by Ulrich Drepper.
706 * nscd can now cache entries persistently. Expiring entries are reloaded.
707 For speedups the cache can be shared in memory with client processes.
708 Implemented by Ulrich Drepper.
710 * nscd can now perform SELinux checks.
711 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
713 * getaddrinfo queries are now cached. Canonical name lookup is performed
714 efficiently.
715 Implemented by Ulrich Drepper.
717 * The nothrow function attribute is used when headers are used by gcc when
718 compiling C code. This can avoid significant amounts of exception
719 handling data.
721 * The malloc functions perform more error checking and are stricter when
722 it comes to reacting on errors. The default action is to terminate
723 the process after showing an error message. Implemented by Ulrich Drepper.
725 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
726 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
728 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
729 namespaces using the new function dlmopen(). This feature is of course,
730 like most other dynamic loading functionality, not available in statically
731 linked applications. Implemented by Ulrich Drepper.
733 * Low-overhead boundary checking variants of string and some stdio functions
734 were added. These are to be used in conjunction with a gcc patch by
735 Jakub Jelinek which adds calls to these functions if possible.
736 Implemented by Jakub Jelinek and Ulrich Drepper.
738 * Old code for several operating systems and machine architectures that
739 have not been in working condition in a long time have been removed from
740 the main source tree maintained by the GNU C Library's maintainers.
741 These files are now reside in the separate `ports' source module
742 that is usable as an add-on when building the library.
743 \f
744 Version 2.3.3
746 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
747 interrogate the dynamic linker, compatible with the Solaris interface.
749 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
750 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
752 * getifaddrs now uses the netlink interface on Linux to get its information.
753 Implemented by Thorsten Kukuk.
755 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
756 Implemented by Ulrich Drepper.
758 * support for non-executable stacks on x86 has been added. Changes mostly
759 by Roland McGrath.
761 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
762 and Ulrich Drepper.
764 * getaddrinfo now performs destination address selection according to
765 RFC 3484.
766 \f
767 Version 2.3.2
769 * Thread-safe interfaces for many functions that access locale data
770 were added in version 2.3, but these features were omitted from NEWS.
771 Many functions have variants with an `_l' suffix that take a `locale_t'
772 object as a parameter rather than consulting the current locale.
773 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
774 create and maintain `locale_t' objects. Additionally, the new function
775 `uselocale' sets "the current locale" (as used by functions not so
776 parameterized) set for an individual thread. These features were added
777 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
779 * The functions getresuid, getresgid, setresuid, and setresgid, which
780 have long been available on Linux, are now declared in <unistd.h>
781 and are now also available on the Hurd.
783 * ELF thread-local storage support (TLS) now works on x86-64.
785 * The new dynamic string token $LIB is expanded in shared library names.
786 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
788 * Aldy Hernandez contributed complete software floating point support for
789 PowerPC machines with no FPU.
791 * fexecve is implemented on Linux.
793 * The `btowc' function should work at least twice as fast due to
794 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
796 * With approriate thread add-ons cancelable functions are now implemented
797 in libc.so as well. No need to call the function in libpthread. This
798 change allowed to finally disable the incorrect and expensive handling
799 of weak definition in ld.so.
801 * Yet more PLT entries in libc.so have been removed. We finally arrived
802 at the bare minimum. Startup times improved appropriately.
804 * Support for the new Linux/x86 system call interface was added. The
805 AT_SYSINFO auxiliary vector entry is recognized and handled.
806 \f
807 Version 2.3
809 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
810 charsets.
812 * iconv (the program and the interface) now accepts empty names (excluding
813 options like //TRANSLIT) to mean "use charset of current locale".
815 * localedef can now transliterate characters in strings which are not in
816 the provided charmap. The information from the input locale is used.
818 * Prelinking support was added for ELF targets. This requires additional
819 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
821 * Read-only stdio streams now use mmap to speed up operation by eliminating
822 copying and buffer underflows. To use add 'm' to the mode string of
823 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
825 * The malloc functions were completely rewritten by Wolfram Gloger based
826 on Doug Lea's malloc-2.7.0.c.
828 * Isamu Hasegawa contributed a completely new and POSIX-conformant
829 implementation of regex.
831 * Bruno Haible upgraded the iconv and locale implementation to support
832 Unicode 3.2.
834 * Contents of the LC_* and LANG environment variables in the CEN style are
835 not recognized anymore. It never was used. Change by Ulrich Drepper.
837 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
838 thread-local storage (TLS) ABI on some platforms.
839 Changes by Ulrich Drepper. SH support by Kaz Kojima.
841 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
842 EUC-JISX0213, and TSCII.
844 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
845 BSD-compatible interface for getting all network interface addresses.
846 Implementation for IPv4 by Roland McGrath.
848 * Loading of locale data is faster due to the introduction of a locale
849 archive. Implemented by Roland McGrath and Ulrich Drepper.
851 * Startup times are significantly reduced by not using exported functions
852 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
853 and Ulrich Drepper.
855 * Steven Munroe contributed a port to PowerPC64/Linux.
856 \f
857 Version 2.2.6
859 * The Hurd now uses the GNU libio implementation of stdio rather than the
860 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
862 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
863 with the same behavior as the Linux system call of the same name.
864 \f
865 Version 2.2.5
867 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
868 128-bit long double format.
870 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
871 IBM1161, and IBM1162 charsets.
873 * Andreas Jaeger contributed a port to x86-64/Linux.
875 * Peter Bruin contributed a port to PowerPC/Hurd.
877 * libc functions using I/O streams now can handle wide-oriented streams
878 as well.
880 * optimizations in the dynamic linker. Binaries created by recent binutils
881 versions start up quicker due to reduced time spent on relocations.
883 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
884 \f
885 Version 2.2.4
887 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
888 asinh, atanh, j0 for the 128-bit long double format.
890 * Bruno Haible updated all the code handling Unicode in some form to
891 support Unicode 3.1.
893 * Speed of regex for single-byte locales is back to previous levels.
894 Patch by Isamu Hasegawa.
896 * Alpha, SPARC, and IA-64 now also using floating stacks.
898 * Startup time of internationalized applications greatly improved through
899 iconv cache. Use iconvconfig to generate the cache file.
900 Contributed by Ulrich Drepper.
902 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
903 severe performance problems. Patch by David Mosberger.
905 * The Hurd port got a lot more functionality like AIO, various stdio
906 extensions, etc. Mainly done by Roland McGrath.
908 * mtrace can now lookup symbols in shared libraries.
909 \f
910 Version 2.2.3
912 * Intel's IA-64 math library is largely integrated. It provides fast and
913 accurate implementatations for most basic and standard math functions
914 in float, double, and long double format.
916 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
917 and asin for the 96-bit long double format and asin, log, tan for the
918 128-bit long double format.
920 * The beginning of a last-bit accurate math library by IBM Haifa were added.
921 The basic double functions exist today. Contributed by Abraham Ziv
922 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
923 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
925 * An asynchronous name lookup library was added. The interface is designed
926 after POSIX AIO. The proposal was circulated beforehand to get comments.
927 No negative ones came in. Implemented by Ulrich Drepper.
929 * Port to S390/64bit contributed by Martin Schwidefsky
930 <schwidefsky@de.ibm.com>.
932 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
933 of functions for Linux/IA-64.
935 * The RPC code is now thread safe. Threads can now use the same service
936 of different services at the same time. Patch by Eric Norum
937 <eric.norum@usask.ca> with some help by Ulrich Drepper.
939 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
940 family of functions for Linux/S390.
942 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
943 of functions for Linux/x86.
945 * Port to Linux/CRIS contributed by Axis Communications.
946 \f
947 Version 2.2.2
949 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
950 we can now check for namespace violations and missing declarations. The
951 result is that almost all headers are now Unix-compliant (as defined in
952 the upcoming XPG6). The negative side is that some programs might need
953 corrections, too, if they depend on the incorrect form of the headers in
954 previous versions which defined too many symbols and included too many
955 other headers.
957 * regex now handles multibyte character sets correctly.
958 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
960 * iconv (the program) does now conform to the upcoming XPG6 and handles
961 charmaps. Instead of the charset names the path of charmaps can be
962 provided and the conversion happens based on this data.
963 Contributed by Ulrich Drepper.
965 * The locale program now provides detailed information about the installed
966 locales. While
968 locale -a
970 only lists the names of the supported locales
972 locale -a --verbose
974 provides details such as country, language, and codeset name.
975 Contributed by Ulrich Drepper.
976 \f
977 Version 2.2.1
979 * The gencat program now parses the input file according to the charset
980 selected by the LC_CTYPE category. This is important for stateful
981 character sets. To make generating catalogs easier there is a way
982 to overwrite the charset selected by the locale: before the first
983 message or $ quote line the catalog can contain a line like
985 $ codeset=ISO-8859-2
987 to select the charset (ISO-8859-2 in this case).
989 Implemented by Shinya Hanataka and Ulrich Drepper.
991 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
992 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
993 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
995 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
996 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
998 * The LANGUAGE environment variable is now ignored unless the locale is
999 changed from the default "C" locale.
1001 * The usual bug fixes.
1002 \f
1003 Version 2.2
1005 * Greg McGary added runtime support for bounds checking using gcc's
1006 new -fbounded-pointers option. ix86 target is complete. PowerPC
1007 is in progress.
1009 * Thorsten Kukuk added secure mode support to nscd.
1011 * The Berkeley db libraries have been removed.
1013 Related, the nss_db module is now in a separate package since it
1014 obviously requires a database library being available.
1016 * Wide character I/O streams implemented by Ulrich Drepper.
1018 * Functions from the extended socket API added by Ulrich Drepper.
1020 * Functions feenableexcept and fedisableexcept to control the
1021 behaviour of individual exceptions have been added by Andreas Jaeger.
1023 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1025 * The resolver code has been updated from bind 8.2.3-T5B which supports
1026 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1027 and Mark Kettenis.
1029 This change could in some situations effect backward compatibility. Since
1030 now `_res' is a thread-local instead of a global variable, modifying it
1031 in one thread does not have any effect in other threads.
1033 The resolver library was also extended to allow IPv6 as the transport
1034 protocol for the requests. This work was done by Stig Venaas.
1036 * Compatibility code for K&R C compilers has been removed from the
1037 header files. A ISO C compiler is needed to use the library
1038 (conforming to either C89 or C99 standard).
1040 * Complete rewrite of the localedef program to support multibyte character
1041 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1042 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1043 Implemented by Ulrich Drepper.
1045 Bruno Haible significantly improved the generation and use of the data
1046 structures for the wide character tables.
1048 * Plural handling in gettext implemented by Ulrich Drepper.
1050 * The utmp daemon has been removed.
1052 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1054 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1055 and Yutaka Niibe.
1057 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1059 * POSIX barriers implemented by Kaz Kylheku.
1061 * POSIX spawn function family implemented by Ulrich Drepper.
1063 * POSIX spinlocks are now available.
1065 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1067 * the configure option --enable-kernel=X.Y.Z allows to strip out
1068 compatibility for kernel versions before X.Y.Z. This is currently only
1069 implemented for Linux.
1071 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1072 field sin6_scope_id. This means that all programs using IPv6 should be
1073 recompiled. Don't expect binary compatibility with previous glibc
1074 versions.
1076 * various conversion modules for IBM character sets contributed by
1077 Masahide Washizawa.
1079 * IA-64 port by Jes Sorensen and HJ Lu.
1080 \f
1081 Version 2.1.3
1083 * bug fixes
1085 \f
1086 Version 2.1.2
1088 * bug fixes
1090 \f
1091 Version 2.1.1
1093 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1095 * New xdr functions are added; some rpc functions are now 64bit clean.
1097 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1099 * Fixed known incompatibilities with glibc 2.0.
1101 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1103 * Optimized a number of functions (especially the ELF dynamic loader).
1105 * Update timezone data files.
1107 * lots of charmaps corrections
1109 * some new locale definitions and charmaps
1111 \f
1112 Version 2.1
1114 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1115 conform to POSIX member type requirements. Symbol versions have been
1116 adjusted as needed within the library, and for direct use by applications,
1117 but there is potential for problems if third-party libraries use
1118 struct timeval as part of their interface. This does not present
1119 a problem for X and other "essential" system libraries.
1121 * An additional locale model to support C++ Standard Library locale
1122 model and probably more was implemented by Ulrich Drepper.
1124 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1125 symbol level.
1127 * Miles Bader provided the `argp' function family to support hierachical
1128 command line argument parsing, layered on top of getopt.
1130 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1132 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1133 numbers.
1135 * scanf recognizes the %a and %A format for scanning floating point numbers.
1137 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1138 information and interfaces for the available integer types.
1140 * about 130 new math functions were added to implement the ISO C9x math
1141 library.
1143 * the new header <complex.h> contains definitions of the complex math
1144 functions from ISO C 9X.
1146 * the new header <tgmath.h> defines generic macros to use complex or
1147 real valued functions.
1149 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1151 * Andreas Jaeger provided a test suite for the math library.
1153 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1155 * Ulrich Drepper added character set conversion functions (iconv).
1157 * Optimized string functions have been added.
1159 * The localedata addon is now part of glibc.
1161 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1163 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1164 daemon for NSS (nscd).
1166 Missing a better place here are some numbers on improvements. Under
1167 Linux 2.1.125 un-tar-ing the kernel sources takes
1169 user system wall
1171 using local files 12.19s 6.88s 22.91s
1173 using NIS 13.92s 8.91s 26.34s
1175 using NIS & nscd 10.37s 7.34s 25.30s
1177 using NIS+ 27.57s 30.37s 640.46s
1179 using NIS+ & nscd 10.25s 7.83s 26.51s
1181 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1183 Keep in mind that non-namelookup related operations dominate above times.
1184 It was just a common complain that using NIS+ unpacking the kernel is
1185 horribly slow.
1187 [1] The old nscd implementation is not available anymore since it was
1188 distributed with glibc up to version 2.0.98 and thus is now replaced.
1190 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1192 * Mark Kettenis provided a Hesiod NSS module.
1194 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1195 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1197 * rcmd can now handle netgroups (Dick Streefland).
1199 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1200 Bambrough.
1202 * Support for the IPv6 protocol has been added to the socket API, as per the
1203 latest draft standards.
1205 * Support for Linux 2.2 has been added.
1207 * Interface changes relative to the latest 2.0.x release:
1208 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1209 addseverity NEW: Unix98
1210 alphasort64 NEW: LFS
1211 argp_err_exit_status NEW: argp, GNU ext
1212 argp_error NEW: argp, GNU ext
1213 argp_failure NEW: argp, GNU ext
1214 argp_help NEW: argp, GNU ext
1215 argp_parse NEW: argp, GNU ext
1216 argp_program_bug_address NEW: argp, GNU ext
1217 argp_program_version NEW: argp, GNU ext
1218 argp_program_version_hook NEW: argp, GNU ext
1219 argp_state_help NEW: argp, GNU ext
1220 argp_usage NEW: argp, GNU ext
1221 authdes_create NEW: Secure RPC
1222 authdes_getucred NEW: Secure RPC
1223 authdes_pk_create NEW: Secure RPC
1224 backtrace NEW: GNU ext.
1225 backtrace_symbols NEW: GNU ext.
1226 backtrace_symbols_fd NEW: GNU ext.
1227 cacos NEW: ISO C 9x
1228 cacosf NEW: ISO C 9x
1229 cacosh NEW: ISO C 9x
1230 cacoshf NEW: ISO C 9x
1231 cacoshl NEW: ISO C 9x
1232 cacosl NEW: ISO C 9x
1233 capget NEW: kernel
1234 capset NEW: kernel
1235 carg NEW: ISO C 9x
1236 cargf NEW: ISO C 9x
1237 cargl NEW: ISO C 9x
1238 casin NEW: ISO C 9x
1239 casinf NEW: ISO C 9x
1240 casinh NEW: ISO C 9x
1241 casinhf NEW: ISO C 9x
1242 casinhl NEW: ISO C 9x
1243 casinl NEW: ISO C 9x
1244 catan NEW: ISO C 9x
1245 catanf NEW: ISO C 9x
1246 catanh NEW: ISO C 9x
1247 catanhf NEW: ISO C 9x
1248 catanhl NEW: ISO C 9x
1249 catanl NEW: ISO C 9x
1250 cbc_crypt NEW: Secure RPC
1251 ccos NEW: ISO C 9x
1252 ccosf NEW: ISO C 9x
1253 ccosh NEW: ISO C 9x
1254 ccoshf NEW: ISO C 9x
1255 ccoshl NEW: ISO C 9x
1256 ccosl NEW: ISO C 9x
1257 cexp NEW: ISO C 9x
1258 cexpf NEW: ISO C 9x
1259 cexpl NEW: ISO C 9x
1260 cimag NEW: ISO C 9x
1261 cimagf NEW: ISO C 9x
1262 cimagl NEW: ISO C 9x
1263 clearerr_locked REMOVED
1264 clntunix_create NEW: sunrpc ext
1265 clog NEW: ISO C 9x
1266 clog10 NEW: ISO C 9x
1267 clog10f NEW: ISO C 9x
1268 clog10l NEW: ISO C 9x
1269 clogf NEW: ISO C 9x
1270 clogl NEW: ISO C 9x
1271 conj NEW: ISO C 9x
1272 conjf NEW: ISO C 9x
1273 conjl NEW: ISO C 9x
1274 cpow NEW: ISO C 9x
1275 cpowf NEW: ISO C 9x
1276 cpowl NEW: ISO C 9x
1277 cproj NEW: ISO C 9x
1278 cprojf NEW: ISO C 9x
1279 cprojl NEW: ISO C 9x
1280 creal NEW: ISO C 9x
1281 crealf NEW: ISO C 9x
1282 creall NEW: ISO C 9x
1283 creat64 NEW: LFS
1284 csin NEW: ISO C 9x
1285 csinf NEW: ISO C 9x
1286 csinh NEW: ISO C 9x
1287 csinhf NEW: ISO C 9x
1288 csinhl NEW: ISO C 9x
1289 csinl NEW: ISO C 9x
1290 csqrt NEW: ISO C 9x
1291 csqrtf NEW: ISO C 9x
1292 csqrtl NEW: ISO C 9x
1293 ctan NEW: ISO C 9x
1294 ctanf NEW: ISO C 9x
1295 ctanh NEW: ISO C 9x
1296 ctanhf NEW: ISO C 9x
1297 ctanhl NEW: ISO C 9x
1298 ctanl NEW: ISO C 9x
1299 des_setparity NEW: Secure RPC
1300 ecb_crypt NEW: Secure RPC
1301 endutxent NEW: Unix98
1302 exp10 NEW: ISO C 9x
1303 exp10f NEW: ISO C 9x
1304 exp10l NEW: ISO C 9x
1305 exp2 NEW: ISO C 9x
1306 exp2f NEW: ISO C 9x
1307 exp2l NEW: ISO C 9x
1308 fattach NEW: STREAMS
1309 fdetach NEW: STREAMS
1310 fdim NEW: ISO C 9x
1311 fdimf NEW: ISO C 9x
1312 fdiml NEW: ISO C 9x
1313 feclearexcept NEW: ISO C 9x
1314 fegetenv NEW: ISO C 9x
1315 fegetexceptflag NEW: ISO C 9x
1316 fegetround NEW: ISO C 9x
1317 feholdexcept NEW: ISO C 9x
1318 feof_locked REMOVED
1319 feraiseexcept NEW: ISO C 9x
1320 ferror_locked REMOVED
1321 fesetenv NEW: ISO C 9x
1322 fesetexceptflag NEW: ISO C 9x
1323 fesetround NEW: ISO C 9x
1324 fetestexcept NEW: ISO C 9x
1325 feupdateenv NEW: ISO C 9x
1326 fflush_locked REMOVED
1327 ffsl NEW: GNU ext.
1328 ffsll NEW: GNU ext.
1329 fgetpos64 NEW: LFS
1330 fgets_unlocked NEW: GNU ext.
1331 fileno_locked REMOVED
1332 fma NEW: ISO C 9x
1333 fmaf NEW: ISO C 9x
1334 fmal NEW: ISO C 9x
1335 fmax NEW: ISO C 9x
1336 fmaxf NEW: ISO C 9x
1337 fmaxl NEW: ISO C 9x
1338 fmin NEW: ISO C 9x
1339 fminf NEW: ISO C 9x
1340 fminl NEW: ISO C 9x
1341 fmtmsg NEW: Unix98
1342 fopen64 NEW: LFS
1343 fputc_locked REMOVED
1344 fputs_unlocked NEW: GNU ext.
1345 fread_unlocked NEW: GNU ext.
1346 freopen64 NEW: LFS
1347 fseeko NEW: Unix98
1348 fsetpos64 NEW: LFS
1349 fstatfs64 NEW: LFS
1350 fstatvfs NEW: Unix98
1351 fstatvfs64 NEW: LFS
1352 ftello NEW: Unix98
1353 ftello64 NEW: LFS
1354 ftruncate64 NEW: LFS
1355 ftw64 NEW: LFS
1356 fwrite_unlocked NEW: GNU ext.
1357 gai_strerror NEW: IPv6
1358 gamma_r REMOVED
1359 gammaf_r REMOVED
1360 gammal_r REMOVED
1361 getchar_locked REMOVED
1362 getdate NEW: Unix98
1363 getdate_err NEW: Unix98
1364 getdate_r NEW: GNU ext.
1365 getmsg NEW: STREAMS
1366 getnameinfo NEW: IPv6
1367 getnetname NEW: Secure RPC
1368 getpmsg NEW: STREAMS
1369 getpt NEW: Unix98 PTY
1370 getrlimit64 NEW: LFS
1371 getutxent NEW: Unix98
1372 getutxid NEW: Unix98
1373 getutxline NEW: Unix98
1374 glob64 NEW: GNU ext.
1375 globfree64 NEW: GNU ext.
1376 gnu_get_libc_release NEW: GNU ext.
1377 gnu_get_libc_version NEW: GNU ext.
1378 grantpt NEW: Unix98 PTY
1379 host2netname NEW: Secure RPC
1380 iconv NEW: iconv
1381 iconv_close NEW: iconv
1382 iconv_open NEW: iconv
1383 if_freenameindex NEW: IPv6
1384 if_indextoname NEW: IPv6
1385 if_nameindex NEW: IPv6
1386 if_nametoindex NEW: IPv6
1387 in6addr_any NEW: IPv6
1388 in6addr_loopback NEW: IPv6
1389 inet6_isipv4mapped NEW: IPv6
1390 isastream NEW: STREAMS
1391 iswblank NEW: GNU ext.
1392 key_decryptsession NEW: Secure RPC
1393 key_decryptsession_pk NEW: Secure RPC
1394 key_encryptsession NEW: Secure RPC
1395 key_encryptsession_pk NEW: Secure RPC
1396 key_gendes NEW: Secure RPC
1397 key_get_conv NEW: Secure RPC
1398 key_secretkey_is_set NEW: Secure RPC
1399 key_setnet NEW: Secure RPC
1400 key_setsecret NEW: Secure RPC
1401 llrint NEW: ISO C 9x
1402 llrintf NEW: ISO C 9x
1403 llrintl NEW: ISO C 9x
1404 llround NEW: ISO C 9x
1405 llroundf NEW: ISO C 9x
1406 llroundl NEW: ISO C 9x
1407 log2 NEW: ISO C 9x
1408 log2f NEW: ISO C 9x
1409 log2l NEW: ISO C 9x
1410 lrint NEW: ISO C 9x
1411 lrintf NEW: ISO C 9x
1412 lrintl NEW: ISO C 9x
1413 lround NEW: ISO C 9x
1414 lroundf NEW: ISO C 9x
1415 lroundl NEW: ISO C 9x
1416 lseek64 NEW: LFS
1417 makecontext NEW: Unix98
1418 mempcpy NEW: GNU ext.
1419 mmap64 NEW: LFS
1420 moncontrol REMOVED
1421 modify_ldt NEW: kernel
1422 nan NEW: ISO C 9x
1423 nanf NEW: ISO C 9x
1424 nanl NEW: ISO C 9x
1425 nearbyint NEW: ISO C 9x
1426 nearbyintf NEW: ISO C 9x
1427 nearbyintl NEW: ISO C 9x
1428 netname2host NEW: Secure RPC
1429 netname2user NEW: Secure RPC
1430 nexttoward NEW: ISO C 9x
1431 nexttowardf NEW: ISO C 9x
1432 nexttowardl NEW: ISO C 9x
1433 nftw NEW: Unix98
1434 nftw64 NEW: LFS
1435 open64 NEW: LFS
1436 passwd2des NEW: Secure RPC
1437 pow10 NEW: GNU ext.
1438 pow10f NEW: GNU ext.
1439 pow10l NEW: GNU ext.
1440 pread NEW: Unix98
1441 pread64 NEW: LFS
1442 printf_size NEW: GNU ext.
1443 printf_size_info NEW: GNU ext.
1444 profil_counter REMOVED
1445 pthread_mutexattr_getkind_np REPLACED
1446 pthread_mutexattr_setkind_np REPLACED
1447 ptsname NEW: Unix98 PTY
1448 ptsname_r NEW: Unix98 PTY
1449 putc_locked REMOVED
1450 putchar_locked REMOVED
1451 putgrent NEW: GNU ext.
1452 putmsg NEW: STREAMS
1453 putpmsg NEW: STREAMS
1454 pututxline NEW: Unix98
1455 pwrite NEW: Unix98
1456 pwrite64 NEW: LFS
1457 readdir64 NEW: LFS
1458 readdir64_r NEW: LFS
1459 remquo NEW: ISO C 9x
1460 remquof NEW: ISO C 9x
1461 remquol NEW: ISO C 9x
1462 round NEW: ISO C 9x
1463 roundf NEW: ISO C 9x
1464 roundl NEW: ISO C 9x
1465 rtime NEW: GNU ext.
1466 scalbln NEW: ISO C 9x
1467 scalblnf NEW: ISO C 9x
1468 scalblnl NEW: ISO C 9x
1469 scandir64 NEW: LFS
1470 sendfile NEW: kernel
1471 setcontext NEW: Unix98
1472 setrlimit64 NEW: LFS
1473 setutxent NEW: Unix98
1474 sighold NEW: Unix98
1475 sigignore NEW: Unix98
1476 sigqueue NEW: POSIX.1b
1477 sigrelse NEW: Unix98
1478 sigset NEW: POSIX.1b
1479 sigtimedwait NEW: POSIX.1b
1480 sigwaitinfo NEW: POSIX.1b
1481 sincos NEW: GNU ext.
1482 sincosf NEW: GNU ext.
1483 sincosl NEW: GNU ext.
1484 statfs64 NEW: LFS
1485 statvfs NEW: Unix98
1486 statvfs64 NEW: LFS
1487 strcasestr NEW: GNU ext.
1488 strtoimax NEW: ISO C 9x
1489 strtoumax NEW: ISO C 9x
1490 strverscmp NEW: GNU ext.
1491 svcauthdes_stats NEW: Secure RPC
1492 svcunix_create NEW: sunrpc etx
1493 svcunixfd_create NEW: sunrpc ext
1494 swapcontext NEW: Unix98
1495 tcgetsid NEW: Unix98 PTY
1496 tdestroy NEW: GNU ext.
1497 tgamma NEW: ISO C 9x
1498 tgammaf NEW: ISO C 9x
1499 tgammal NEW: ISO C 9x
1500 tmpfile64 NEW: LFS
1501 trunc NEW: ISO C 9x
1502 truncate64 NEW: LFS
1503 truncf NEW: ISO C 9x
1504 truncl NEW: ISO C 9x
1505 umount2 NEW: kernel
1506 unlockpt NEW: Unix98 PTY
1507 updwtmpx NEW: Unix98
1508 user2netname NEW: Secure RPC
1509 utmpxname NEW: Unix98
1510 versionsort NEW: GNU ext.
1511 versionsort64 NEW: GNU ext.
1512 waitid NEW: Unix98
1513 wcscasecmp NEW: GNU ext.
1514 wcsncasecmp NEW: GNU ext.
1515 wcsnlen NEW: GNU ext.
1516 wcstoimax NEW: ISO C 9x
1517 wcstoll NEW: ISO C 9x
1518 wcstoull NEW: ISO C 9x
1519 wcstoumax NEW: ISO C 9x
1520 wcswcs NEW: Unix98
1521 wordexp NEW: POSIX.2
1522 wordfree NEW: POSIX.2
1523 write_profiling REMOVED
1524 xdecrypt NEW: Secure RPC
1525 xdr_authdes_cred NEW: Secure RPC
1526 xdr_authdes_verf NEW: Secure RPC
1527 xdr_cryptkeyarg NEW: Secure RPC
1528 xdr_cryptkeyarg2 NEW: Secure RPC
1529 xdr_cryptkeyres NEW: Secure RPC
1530 xdr_getcredres NEW: Secure RPC
1531 xdr_key_netstarg NEW: Secure RPC
1532 xdr_key_netstres NEW: Secure RPC
1533 xdr_keybuf NEW: Secure RPC
1534 xdr_keystatus NEW: Secure RPC
1535 xdr_netnamestr NEW: Secure RPC
1536 xdr_sizeof NEW: Secure RPC
1537 xdr_unixcred NEW: sunrpc ext
1538 xencrypt NEW: Secure RPC
1539 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1540 \f
1541 Version 2.0.6
1543 * more bug fixes
1545 \f
1546 Version 2.0.5
1548 * more bug fixes
1550 * inet_ntoa is thread-safe
1552 * updwtmp is moved from libutil to libc
1554 * rewrite of cbrt function
1556 * update of timezone data
1557 \f
1558 Version 2.0.4
1560 * more bug fixes
1561 \f
1562 Version 2.0.3
1564 * more bug fixes
1565 \f
1566 Version 2.0.2
1568 * more bug fixes
1570 * add atoll function
1572 * fix complex problems in Berkeley DB code
1574 * fix math functions
1575 \f
1576 Version 2.0.1
1578 * fixed lots of header problems (especially Linux/GNU specific)
1580 * dynamic loader preserves all registers
1582 * Roland McGrath provided support for handling of auxiliary objects in
1583 the ELF dynamic loader.
1585 * support for parallel builds is improved
1586 \f
1587 Version 2.0
1589 * GNU extensions are no longer declared by default. To enable them you
1590 must define the macro `_GNU_SOURCE' in your program or compile with
1591 `-D_GNU_SOURCE'.
1593 * The library has changed from using GNU ld symbol aliases to using weak
1594 symbols where available. The ELF object file format supports weak
1595 symbols; GNU ld also supports weak symbols in the a.out format. (There
1596 is also now support for other GNU ld extensions in ELF. Use the
1597 `--with-elf' option to configure to indicate you have ELF, and
1598 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1599 of many files which contained only symbol aliases, reducing the size of
1600 the source and the compiled library; many other files were renamed to
1601 less cryptic names previously occupied by the symbol alias files.
1602 There is a new header file <elf.h> for programs which operate on
1603 files in the ELF format.
1605 * Converted to Autoconf version 2, so `configure' has more options.
1606 Run `configure --help' to see the details.
1608 * The library can now be configured to build profiling, highly-optimized
1609 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1610 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1611 `configure' enable building these extra libraries. The shared library is
1612 built by default when using both ELF and GNU ld. When shared libraries
1613 are enabled, the new library `-ldl' is available for arbitrary run-time
1614 loading of shared objects; its interface is defined in <dlfcn.h>. The
1615 new header file <link.h> gives access to the internals of the run-time
1616 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1617 application of same name on other systems and it provides information
1618 about dynamically linked binaries.
1620 * The C library now provides the run-time support code for profiling
1621 executables compiled with `-pg'. Programs can control the profiling code
1622 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1623 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1624 the support for this file format was contributed by David Mosberger-Tang.
1626 * The math code has been replaced with a math library based on fdlibm from
1627 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1628 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1629 functions. The math functions now reside in a separate library, so
1630 programs using them will need to use `-lm' their linking commands.
1632 * John C. Bowman contributed optimized ix87 assembler inline functions.
1634 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1635 mechanism similar to that found in Solaris 2. This is now used for the
1636 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1637 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1638 file controls what services are used for each individual database. This
1639 works by loading shared libraries with names specified in `nsswitch.conf',
1640 so service modules can be changed or added at any time without even
1641 relinking any program. Currently there are the file, db, and NIS based
1642 NSS services available.
1644 * The new functions `strtoq' and `strtouq' parse integer values from
1645 strings, like `strtol' and `strtoul', but they return `long long int' and
1646 `unsigned long long int' values, respectively (64-bit quantities).
1648 * The new functions `strtof' and `strtold' parse floating-point values from
1649 strings, like `strtod', but they return `float' and `long double' values,
1650 respectively (on some machines `double' and `long double' are the same).
1652 * Ulrich Drepper has contributed new implementations of the floating-point
1653 printing and reading code used in the `printf' family of functions and
1654 `strtod', `strtof', and `strtold'. These new functions are perfectly
1655 accurate, and much faster than the old ones.
1657 * The implementation of the POSIX locale model was completely rewritten by
1658 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1659 to compile the POSIX locale definition.
1661 * The former dummy implementations of the strcoll and strxfrm function are
1662 now replaced by fully functional code contributed by Ulrich Drepper. The
1663 collation information comes from the POSIX locale definitions.
1665 * The new header <langinfo.h> defines an interface for accessing
1666 various locale-dependent data (using the locale chosen with `setlocale').
1668 * Ulrich Drepper has contributed a new suite of functions for operation on
1669 wide-character and multibyte-character strings, in <wchar.h>;
1670 and classification and case conversion of wide characters, in <wctype.h>.
1671 These new functions are conforming to the ISO C, Amendement 1 specification.
1673 * There is now a second implementation of the standard I/O library available.
1674 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1675 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1677 * You can now use positional parameter specifications in format strings
1678 for the `printf' and `scanf' families of functions. For example,
1679 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1680 ``Number 6, Mr Jones''. This is mainly useful when providing different
1681 format strings for different languages, whose grammars may dictate
1682 different orderings of the values being printed. To support this
1683 feature, the interface for `register_printf_handler' has changed; see
1684 the header file <printf.h> for details.
1686 * The `printf' and `scanf' families of functions now understand a new
1687 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1688 to group numbers as indicated by the locale; for `scanf' and friends, this
1689 says to accept as valid only a number with all the proper grouping
1690 separators in the right places. In the default "C" locale, numbers are
1691 not grouped; but locales for specific countries will define the usual
1692 conventions (i.e. separate thousands with `,' in the US locale).
1694 * The pgrp functions have been regularized, slightly incompatibly but much
1695 less confusingly. The core functions are now `getpgid' and `setpgid',
1696 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1697 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1698 provided for compatibility. There is no longer an incompatible `getpgrp'
1699 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1701 * The new header file <fts.h> and suite of functions simplify programs that
1702 operate on directory trees. This code comes from 4.4 BSD.
1704 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1705 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1706 NSS scheme used in glibc.
1708 * There is a new malloc debugging hook `__memalign_hook'.
1710 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1711 `unsigned int' in <sys/types.h>. These are for compatibility only and
1712 their use is discouraged.
1714 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1715 done differently, so that it works even without GNU ld.
1717 * New function `euidaccess' checks allowed access to a file like `access',
1718 but using the effective IDs instead of the real IDs.
1720 * The time zone data files have been updated for the latest and greatest
1721 local time conventions of the countries of the world.
1723 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1724 see <dirent.h>.
1726 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1727 for formatting floating-point numbers. They are provided only for
1728 compatibility; new programs should use `sprintf' instead. There are
1729 also equivalent function for the `long double' floating-point type and
1730 all functions also exist in a reentrant form.
1732 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1733 functions for maintaining the login-record files (primarily of use to
1734 system programs such as `login'), and convenient functions for
1735 allocating and initializing a pseudo-terminal (pty) device.
1737 * Ulrich Drepper has contributed new support for System V style
1738 shared memory and IPC on systems that support it.
1740 * Ulrich Drepper has contributed several miscellaneous new functions found
1741 in System V: The `hsearch' family of functions provide an effective
1742 implementation of hash tables; `a64l' and `l64a' provide a very simple
1743 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1744 number generator.
1746 * Ulrich Drepper has contributed new reentrant counterparts for the
1747 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1749 * Ulrich Drepper has contributed new, highly-optimized versions of several
1750 string functions for the i486/Pentium family of processors.
1752 * Ulrich Drepper has updated the Linux-specific code, based largely
1753 on work done in Hongjiu Lu's version of GNU libc for Linux.
1754 The GNU library now supports Linux versions 2.0.10 and later,
1755 using the ELF object file format (i[3456]86-*-linux).
1757 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1759 * David Mosberger-Tang and Richard Henderson have ported the C library
1760 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1761 dynamic linking support for ELF/Alpha.
1763 * Richard Henderson contributed several Alpha optimized assembler function
1764 for arithmetic and string handling.
1766 * Ulrich Drepper has contributed a new set of message catalog functions to
1767 support multiple languages using the <libintl.h> interface, for use with
1768 his new package GNU gettext. Translation volunteers have contributed
1769 catalogs of the library's messages in Spanish, German, and Korean.
1771 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1772 program and the `catgets' function for reading the catalog files it
1773 creates. (The <libintl.h> interface is preferred; we include the
1774 <nl_types.h> interface using `catgets' only for source compatibility with
1775 programs already written to use it.)
1777 * New header file <values.h> gives SVID-compatible names for <limits.h>
1778 constants.
1780 * Various new macros, declarations, and small header files for compatibility
1781 with 4.4 BSD.
1783 * New function `group_member' is a convenient way to check if a process has
1784 a given effective group ID.
1786 * When using GCC 2.7 and later, the socket functions are now declared in a
1787 special way so that passing an argument of type `struct sockaddr_in *',
1788 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1789 `struct sockaddr *' type, does not generate a type-clash warning.
1791 * New function `error' declared in header file <error.h> is a convenient
1792 function for printing error messages and optionally exiting; this is the
1793 canonical function used in GNU programs. The new functions `err', `warn',
1794 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1795 doing the same thing.
1797 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1798 POSIX.2 `glob' function to do ~ and {...} expansion.
1800 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1801 `clearenv' which is used in POSIX.9 is also available.
1803 * New function `getsid' returns session ID number on systems that support it.
1805 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1806 files <db.h> and <mpool.h> provide a rich set of functions for several
1807 types of simple databases stored in memory and in files, and <ndbm.h> is
1808 an old `ndbm'-compatible interface using the `db' functions. Link with
1809 `-ldb' to get these functions.
1811 * New macro `strdupa' copies a string like `strdup', but uses local stack
1812 space from `alloca' instead of dynamic heap space from `malloc'.
1814 * New function `strnlen' is like `strlen' but searches only a given maximum
1815 number of characters for the null terminator. `stpncpy', `strndup' and
1816 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1817 function.
1819 * New function `statfs' in header <sys/statfs.h>.
1821 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1822 provide convenient functions for operating on blocks of null-terminated
1823 strings.
1825 * A new suite of functions in <utmp.h> handle all the details of reading
1826 and writing the utmp file.
1828 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1829 Thorsten Kukuk.
1831 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1832 completely POSIX compliant and also implemented the extended functionality
1833 to handle alternate digit representation and alternate era date formats.
1835 * Ulrich Drepper provided an implementation of the `strptime' function
1836 defined in XPG4.2 which transforms a string into a `struct tm' value.
1838 * Paul Eggert provided the tzselect shell script as part of the timezone
1839 code. The shell script makes it easy to select the correct timezone
1840 specification.
1842 * The implementation of the malloc family of functions is completely replaced
1843 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1844 The implementation uses the mmap function (if available) and it is
1845 optimized for the use in multi threaded programs.
1847 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1848 functions. This new functionality is usable by specifying a special
1849 salt string and it is compatible with implementation on *BSD systems.
1851 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1852 `getsubopt' to handle second level command line options, `bsd_signal'
1853 to access BSD style `signal' functionality, the obsolete `regexp' style
1854 expression matcher.
1856 * the `lchown' function is available on system which support this
1857 functionality.
1859 * The implementation of the shadow password handling function was contributed
1860 by Ulrich Drepper.
1862 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1864 * POSIX.1g support was added. The <sys/select.h> header is available,
1865 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1866 implementation of `getaddrinfo'.
1867 \f
1868 Version 1.09
1870 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1872 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1873 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1875 * The new function `daemon' from 4.4 BSD is useful for server programs that
1876 want to put themselves in the background.
1878 * Joel Sherrill has contributed support for several standalone boards that
1879 run without an operating system.
1881 * `printf', `scanf' and friends now accept a `q' type modifier for long
1882 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1884 * All of the code taken from BSD (notably most of the math and networking
1885 routines) has been updated from the BSD 4.4-Lite release.
1887 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1889 * The new functions `getdomainname' and `setdomainname' fetch or change the
1890 YP/NIS domain name. These are system calls which exist on systems which
1891 have YP (aka NIS).
1893 * The time zone data files have been updated for the latest international
1894 conventions.
1896 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1897 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1898 \f
1899 Version 1.08
1901 * The C library now includes support for Sun RPC, from Sun's free
1902 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1903 are included. (There is still no support for YP.)
1905 * Tom Quinn has contributed a port of the C library to SGI machines running
1906 Irix 4 (mips-sgi-irix4).
1908 * The new `lockf' function is a simplified interface to the locking
1909 facilities of `fcntl', included for compatibility.
1911 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1913 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1915 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1916 compatibility.
1918 * The error message printed by `assert' for a failed assertion now includes
1919 the name of the program (if using GNU ld) and the name of the calling
1920 function (with versions of GCC that support this).
1922 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1924 * The library now includes the <sys/mman.h> header file and memory
1925 management functions `mmap', `munmap', `mprotect', `msync', and
1926 `madvise', on systems that support those facilities.
1928 * The interface for `mcheck' has changed slightly: the function called to
1929 abort the program when an allocation inconsistency is detected now takes
1930 an argument that indicates the type of failure. The new function
1931 `mprobe' lets you request a consistency check for a particular block at
1932 any time (checks are normally done only when you call `free' or `realloc'
1933 on a block).
1935 * It is now possible to easily cross-compile the C library, building on one
1936 system a library to run on another machine and/or operating system. All
1937 you need to do is set the variable `HOST_CC' in `configparms' to the
1938 native compiler for programs to run on the machine you are building on (a
1939 few generator programs are used on Unix systems); set `CC' to the
1940 cross-compiler.
1942 * The new function `fexecve' (only implemented on the GNU system) executes
1943 a program file given a file descriptor already open on the file.
1944 \f
1945 Version 1.07
1947 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1948 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1950 * You can set the variable `libprefix' in `configparms' to specify a prefix
1951 to be prepended to installed library files; this makes it easy to install
1952 the GNU C library to be linked as `-lgnuc' or whatever.
1954 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1955 copies a limited number of characters from a string, and returns the
1956 address of the last character written.
1958 * You no longer need to check for whether the installed `stddef.h' is
1959 compatible with the GNU C library. configure now checks for you.
1961 * You can now define a per-stream `fileno' function to convert the
1962 stream's cookie into an integral file descriptor.
1964 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1965 allocates zero bytes of storage, and returns a unique pointer which
1966 you can pass to `realloc' or `free'. The behavior is undefined if
1967 you dereference this pointer.
1969 * The C library now runs on Sony NEWS m68k machines running either
1970 NewsOS 3 or NewsOS 4.
1972 * The new `syscall' function is a system-dependent primitive function
1973 for invoking system calls. It has the canonical behavior on Unix
1974 systems, including unreliable return values for some calls (such as
1975 `pipe', `fork' and `getppid').
1977 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1978 to `EAGAIN', which is the preferred name. On systems whose kernels
1979 use two distinct codes, the C library now translates EWOULDBLOCK to
1980 EAGAIN in every system call function.
1981 \f
1982 Version 1.06
1984 * The GNU C Library Reference Manual is now distributed with the library.
1985 `make dvi' will produce a DVI file of the printed manual.
1986 `make info' will produce Info files that you can read on line using C-h i
1987 in Emacs or the `info' program.
1988 Please send comments on the manual to bug-glibc-manual@gnu.org.
1990 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1992 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1994 * Jason Merrill has contributed a port to the Sequent Symmetry running
1995 Dynix version 3 (i386-sequent-dynix).
1997 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1998 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2000 * New function `memory_warnings' lets you arrange to get warnings when
2001 malloc is running out of memory to allocate, like Emacs gives you.
2003 * The C library now contains the relocating allocator used in Emacs 19 for
2004 its editing buffers. This allocator (ralloc) minimizes allocation
2005 overhead and fragmentation by moving allocated regions around whenever it
2006 needs to. You always refer to a ralloc'd region with a "handle" (a
2007 pointer to a pointer--an object of type `void **').
2009 * There is a new `printf' format: `%m' gives you the string corresponding
2010 to the error code in `errno'.
2012 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2013 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2014 pass, the `a' modifier says to fill in a `char **' you pass with a
2015 malloc'd string.
2017 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2018 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2019 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2021 * `mkstemp' is a traditional Unix function to atomically create and open a
2022 uniquely-named temporary file.
2023 \f
2024 Version 1.05
2026 * The standard location for the file that says what the local timezone is
2027 has changed again. It is now `/usr/local/etc/localtime' (or more
2028 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2030 * The distribution no longer contains any files with names longer than 14
2031 characters.
2033 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2034 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2036 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2037 \f
2038 Version 1.04
2040 * The configuration process has changed quite a bit. The `configure'
2041 script is now used just like the configuration scripts for other GNU
2042 packages. The `sysdeps' directory hierarchy is much rearranged.
2043 The file `INSTALL' explains the new scheme in detail.
2045 * The header files no longer need to be processed into ANSI C and
2046 traditional C versions. There is just one set of files to install, and
2047 it will work with ANSI or old C compilers (including `gcc -traditional').
2049 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2050 MIPS DECStation running Ultrix 4.
2052 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2053 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2054 made itself into a shared library.
2056 * Yet further improved support for the i386, running 4.3 BSD-like systems
2057 (such as Mach 3 with the Unix single-server), or System V.
2059 * New function `strncasecmp' to do case-insensitive string comparison
2060 with limited length.
2062 * New function `strsep' is a reentrant alternative to `strtok'.
2064 * New functions `scandir' and `alphasort' for searching directories.
2066 * New function `setenv' is a better interface to `putenv'.
2068 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2069 function for traversing a directory tree.
2071 * The GNU obstack package is now also part of the C library.
2072 The new function `open_obstack_stream' creates a stdio stream that
2073 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2074 formatted output directly to an obstack.
2076 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2077 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2079 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2081 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2082 things to your strings.
2084 * There are some new test programs: test-fseek, testmb, and testrand.
2086 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2087 These ports are not finished, but are a good starting place for really
2088 supporting those systems.
2090 * `/etc/localtime' is now the standard location for the file that says what
2091 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2092 This follows the general principle that `/etc' is the place for all local
2093 configuration files.
2095 * The C library header files now use `extern "C"' when used by the C++
2096 compiler, so the C library should now work with C++ code.
2098 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2099 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2100 in <strings.h>.)
2102 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2103 function which uses the `merge sort' algorithm, and is said to be
2104 significantly faster than the old GNU `qsort' function. Merge sort is
2105 now the standard `qsort' function. The new algorithm can require a lot
2106 of temporary storage; so, the old sorting function is called when the
2107 required storage is not available.
2109 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2110 provides the Unix `crypt' function, plus some other entry points.
2112 * The code and header files taken from 4.4 BSD have been updated with the
2113 latest files released from Berkeley.
2114 \f
2115 ----------------------------------------------------------------------
2116 Copyright information:
2118 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2120 Permission is granted to anyone to make or distribute verbatim copies
2121 of this document as received, in any medium, provided that the
2122 copyright notice and this permission notice are preserved,
2123 thus giving the recipient permission to redistribute in turn.
2125 Permission is granted to distribute modified versions
2126 of this document, or of portions of it,
2127 under the above conditions, provided also that they
2128 carry prominent notices stating who last changed them.
2129 \f
2130 Local variables:
2131 version-control: never
2132 fill-column: 76
2133 End: