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.
10 * The following bugs are resolved with this release:
12 6778, 14042, 14151, 14154, 14157, 14173, 14283, 14328, 14331, 14337,
18 * The following bugs are resolved with this release:
20 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
21 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
22 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
23 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
24 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
25 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
26 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
27 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
28 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
29 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
30 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
31 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
32 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
33 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
34 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
35 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
36 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
37 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
38 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
39 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
40 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
41 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
44 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
45 configuring glibc with:
46 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
47 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
48 Implemented by H.J. Lu.
52 + define static_assert
56 + declare at_quick_exit and quick_exit also for ISO C11
58 + aligned_alloc. NB: The code is deliberately allows the size parameter
59 to not be a multiple of the alignment. This is a moronic requirement
60 in the standard but it is only a requirement on the caller, not the
65 + uchar.h support added
67 + CMPLX, CMPLXF, CMPLXL added
69 Implemented by Ulrich Drepper.
71 * Support for the IA-64 has been moved to ports.
73 * Remove support for anything but ELF binary format
75 * Checking versions of poll, ppoll added.
76 Implemented by Ulrich Drepper.
78 * More generic and 64-bit performance optimizations to math functions.
79 Implemented by Ulrich Drepper.
81 * New configure option --enable-obsolete-rpc makes the deprecated RPC
82 headers and functions available at compile time as they were before
83 version 2.14. This option will be removed at some time in the future
84 after the TI-RPC library becomes fully sufficient for the needs of
85 existing applications.
87 * Compatibility code for Linux kernel versions before 2.4 has been removed.
88 Note that glibc is not expected to work with any Linux kernel version
91 * New header <sys/auxv.h> and function getauxval allowing easy access to
92 the AT_* key-value pairs passed from the Linux kernel. The header also
93 defines the HWCAP_* bits associated with the AT_HWCAP key.
97 * New configure option --enable-systemtap builds SystemTap static probes
98 into libc for setjmp and longjmp and into libpthread for various operations.
99 So far the setjmp/longjmp probes and some of the libpthread probes are
100 provided only for i*86 and x86_64.
101 Implemented by Roland McGrath and Rayson Ho.
103 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
105 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
108 * More optimized functions for SPARC. Implemented by David S. Miller.
110 * Improved support for cross-compilation, especially bootstrap builds
111 without a previously built glibc.
113 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
114 Chris Metcalf from Tilera.
116 * Support for the old ARM ABI has been removed from ports. Only the EABI is
117 now supported for ARM processors.
119 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
120 as the name of the dynamic linker, to distinguish it from the
121 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
123 * Support for CRIS has been removed from ports.
125 * A new class of installed header has been documented for low-level
126 platform-specific functionality. PowerPC added the first instance with a
127 function to provide time base register access. Contributed by Tulio
128 Magno Quites Machado Filho.
130 * ix86 configurations now install header files that are consistent with
131 what x86-64 configurations install. These same header files can be used
132 for -m32, -m64, or -mx32 builds.
133 Contributed by H.J. Lu.
135 * Math library bug fixes. A thorough audit of all open math library bugs was
136 conducted by Joseph Myers. Significant progress was made on many math
137 library bugs resulting in more accurate exceptions and function results.
138 Many thanks to all those that contributed including Andreas Jaeger for his
139 patch review and work on the x87 trigonometric instruction issues.
141 * Timezone data is no longer installed. Timezone-related binaries and scripts
142 will continue to be installed. Users should obtain their timezone data from
143 their distribution provider or from the tzdata package at
144 <ftp://munnari.oz.au/pub/>.
148 * The following bugs are resolved with this release:
150 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
151 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
152 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
153 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
154 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
155 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
156 13484, 13506, 13515, 13523, 13524, 13538, 13540
158 * New program pldd to list loaded object of a process
159 Implemented by Ulrich Drepper.
161 * Add nss_db support back to glibc. No more dependency on Berkeley db
162 and support for initgroups lookups.
163 Implemented by Ulrich Drepper.
165 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
166 Contributed by HJ Lu.
168 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
169 Contributed by HJ Lu.
171 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
172 on x86-32 and x86-64.
173 Contributed by Liubov Dmitrieva.
175 * Optimized strchr and strrchr for SSE on x86-32.
176 Contributed by Liubov Dmitrieva.
178 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
179 for x86-64 and x86-32.
180 Contributed by Liubov Dmitrieva.
182 * New interfaces: scandirat, scandirat64
183 Implemented by Ulrich Drepper.
185 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
186 Implemented by Ulrich Drepper.
188 * nscd now also caches the netgroup database.
189 Implemented by Ulrich Drepper.
191 * Integrate libm with gcc's -ffinite-math-only option.
192 Implemented by Ulrich Drepper.
194 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
195 to math functions. Implemented by Ulrich Drepper.
197 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
198 Implemented by Ulrich Drepper.
200 * New Linux interfaces: process_vm_readv, process_vm_writev
202 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
203 Implemented by Ulrich Drepper.
205 * Optimized nearbyint and strcasecmp for PPC.
206 Implemented by Adhemerval Zanella.
208 * New locales: bho_IN, unm_US, es_CU, ta_LK
212 * The following bugs are resolved with this release:
214 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
215 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
216 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
217 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
218 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
219 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
220 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
221 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
222 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
223 12795, 12811, 12813, 12814, 12841
225 * The RPC implementation in libc is obsoleted. Old programs keep working
226 but new programs cannot be linked with the routines in libc anymore.
227 Programs in need of RPC functionality must be linked against TI-RPC.
228 The TI-RPC implementation is IPv6 enabled and there are other benefits.
230 Visible changes of this change include (obviously) the inability to link
231 programs using RPC functions without referencing the TI-RPC library and the
232 removal of the RPC headers from the glibc headers.
233 Implemented by Ulrich Drepper.
235 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
236 syncfs, setns, sendmmsg
238 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
239 yue_HK, lij_IT, mhr_RU
241 * New encodings: CP770, CP771, CP772, CP773, CP774
243 * New program sotruss to trace calls through PLTs
244 Implemented by Ulrich Drepper.
246 * The malloc hook implementation is marked deprecated and will be removed
247 from the default implementation in the next version. The design never
248 worked ever since the introduction of threads. Even programs which do
249 not create threads themselves can use multiple threads created internally.
253 * The following bugs are resolved with this release:
255 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
256 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
257 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
258 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
261 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
263 * POWER7 optimizations: memset, memcmp, strncmp
265 * New optimized string functions for x86-64: strnlen (SSE2),
266 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
267 Implemented by Ulrich Drepper.
271 * The following bugs are resolved with this release:
273 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
274 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
275 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
276 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
277 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
278 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
279 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
280 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
282 * New interfaces: pthread_getname_np, pthread_setname_np
284 * New Linux interface: recvmmsg
286 * STT_GNU_IFUNC implemented for Sparc by David Miller.
288 * The dynamic linker now recognizes supported ABI versions from the
289 EI_ABIVERSION field in the ELF header.
290 Implemented by Ulrich Drepper.
292 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
293 will not be used to fill in password fields in the passwd.byname replies.
294 Instead it is used to synthesize the shadow.byname table, should it be
295 missing. This is a useful mode in some installations involving Solaris.
296 Implemented by Ulrich Drepper.
298 * New locales: kok_IN, sq_MK, cv_RU
302 * The following bugs are resolved with this release:
304 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
305 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
306 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
307 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
308 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
309 10789, 10817, 10823, 10840, 10847
311 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
313 Implemented by Ulrich Drepper.
315 * Checking version of longjmp added that fails if an uninitialized stack
316 frame would be created. Implemented by Ulrich Drepper.
318 * STT_GNU_IFUNC is now supported in static executables.
319 Implemented by H.J. Lu.
321 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
323 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
324 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
325 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
326 Contributed by H.J. Lu.
328 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
329 Implemented by Ulrich Drepper.
331 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
333 Contributed by H.J. Lu.
335 * Support for fma instruction in AVX on x86-64.
336 Implemented by H.J. Lu and Ulrich Drepper.
338 * AVX support in x86-64 auditing support in ld.so.
339 Implemented by H.J. Lu.
341 * STB_GNU_UNIQUE support added.
342 Implemented by Ulrich Drepper.
344 * Implement second fallback mode for optimized DNS lookup for even more
345 broken environments. If two requests from the same port are not
346 handled correctly close the socket and open a new one before sending
347 the second request. The 'single-request-reopen' option in /etc/resolv.conf
348 can be used to select this mode right away, instead of rediscovering the
349 necessity is every process again.
350 Implemented by Ulrich Drepper.
352 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
353 Implemented by Adam Tkac.
355 * Optimized iconv conversions for S390x.
356 Implemented by Andreas Krebbel.
358 * Using condvars with PI mutexes is now more efficient due to kernel
359 support for requeueing to PI futexes. NPTL support added for x86-64.
360 Implemented by Ulrich Drepper.
362 * New locales: ps_AF, my_MM
366 * The following bugs are resolved with this release:
368 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
369 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
370 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
371 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
372 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
374 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
375 Implemented by Ulrich Drepper.
377 * New Linux interfaces: accept4, fallocate, fallocate64.
378 Implemented by Ulrich Drepper.
380 * Correct declarations of string function when used in C++ code. This
381 could lead to compile errors for invalid C++ code.
383 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
386 * New POSIX 2008 interface: psiginfo
387 Implemented by Ulrich Drepper.
389 * New ISO C++1x interfaces: quick_exit, at_quick_exit
390 Implemented by Ulrich Drepper.
392 * Support for selecting between multiple function definitions at runtime
393 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
395 * The libcrypt library can now use the hash function implementations in
396 NSS. Implemented by Ulrich Drepper.
398 * The malloc implementation can be compiled to be less memory efficient
399 but higher performing in multi-threaded programs.
400 Implemented by Ulrich Drepper.
402 * New locales: nan_TW@latin, ks_IN
404 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
405 Implemented by Ulrich Drepper.
407 * Extended printf hook support. It is possible to use user-defined types
408 and extend existing format specifiers.
409 Implemented by Ulrich Drepper.
411 * Handling for group shadow files has been added.
412 Implemented by Ulrich Drepper.
414 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
415 servers (the case, e.g., for some people using the built-in DNS
416 server in ADSL modems/routers). There is a once-per-process timeout
417 in case of a broken server. To avoid it, users can run nscd or put
418 'options single-request' in /etc/resolv.conf.
419 Implemented by Ulrich Drepper.
423 * The following bugs are resolved with this release:
425 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
426 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
427 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
428 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
429 6968, 6974, 6980, 6995, 7008, 7009, 7029
431 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
432 up at the same time. Implemented by Ulrich Drepper.
434 * TLS descriptors for LD and GD on x86 and x86-64.
435 Implemented by Alexandre Oliva.
437 * getaddrinfo now handles DCCP and UDPlite.
438 Implemented by Ulrich Drepper.
440 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
441 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
442 Implemented by Ulrich Drepper.
444 * New implementation of memmem, strstr, and strcasestr which is O(n).
445 Implemented by Eric Blake.
447 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
449 * Implement "e" option for popen to open file descriptor with the
450 close-on-exec flag set. Implemented by Ulrich Drepper.
452 * Implement "b" mode for fmemopen. In this mode writes writes don't
453 implicitly add a NUL byte and seeks from the end of the buffer really
454 use the buffer end, not the string length as the basis.
455 Implemented by Ulrich Drepper.
457 * Many functions, exported and internal, now atomically set the close-on-exec
458 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
460 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
462 Implemented by Pravin Satpute.
464 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
468 * The following bugs are resolved with this release:
470 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
471 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
472 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
473 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
474 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
475 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
476 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
478 * New locales: bo_CN, bo_IN, shs_CA.
480 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
482 * Sorting rules for some Indian languages (Devanagari and Gujarati).
483 Implemented by Pravin Satpute.
485 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
487 * nscd caches now all timeouts for DNS entries
488 Implemented by Ulrich Drepper.
490 * nscd is more efficient and wakes up less often.
491 Implemented by Ulrich Drepper.
493 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
494 vdprintf, and obstack_vprintf.
495 Implemented by Jakub Jelinek.
497 * Faster memset for x86-64.
498 Implemented by Harsha Jagasia and H.J. Lu.
500 * Faster memcpy on x86.
501 Implemented by Ulrich Drepper.
503 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
504 Implemented by Ulrich Drepper.
506 * Faster sqrt and sqrtf implemention for some PPC variants.
507 Implemented by Steven Munroe.
511 * The following bugs are resolved with this release:
513 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
514 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
515 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
516 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
517 5071, 5103, 5104, 5112, 5113, 5184, 5186
519 * More checking functions: fread, fread_unlocked, open*, mq_open.
520 Implemented by Jakub Jelinek and Ulrich Drepper.
522 * Extend fortification to C++. Implemented by Jakub Jelinek.
524 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
525 by not recognizing 'a' as a modifier when those specs are requested.
526 Implemented by Jakub Jelinek.
528 * PPC optimizations to math and string functions.
529 Implemented by Steven Munroe.
531 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
532 options to be passed. Implemented by Ulrich Drepper.
534 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
536 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
537 Implemented by Ulrich Drepper.
539 * Handle private futexes in the NPTL implementation.
540 Implemented by Jakub Jelinek and Ulrich Drepper.
542 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
543 Implemented by Roland McGrath and Ulrich Drepper.
545 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
547 * SHA-256 and SHA-512 based password encryption.
548 Implemented by Ulrich Drepper.
550 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
551 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
554 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
555 Implemented by Ulrich Drepper.
559 * The following bugs are resolved with this release:
561 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
562 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
563 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
564 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
565 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
566 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
567 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
570 * New Linux interfaces: epoll_pwait, sched_getcpu.
572 * New generic interfaces: strerror_l.
574 * nscd can now cache the services database. Implemented by Ulrich Drepper.
578 * The following bugs are resolved with this release:
580 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
581 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
582 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
583 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
584 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
585 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
586 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
587 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
588 3225, 3251, 3252, 3253, 3273
590 * For Linux, the sorting of addresses returned by getaddrinfo now also
591 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
592 Implemented by Ulrich Drepper.
594 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
595 Implemented by Ulrich Drepper.
597 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
599 * New iconv module for MIK. Contributed by Alexander Shopov.
601 * For sites with broken group and/or passwd database, the auto-propagate
602 option of nscd can prevent creating ID lookup entries from the results
603 of a name lookup and vice versa. This usually is no problem but some
604 site might have problems with the default behavior.
605 Implemented by Ulrich Drepper.
607 * Iterating over entire database in NIS can be slow. With the
608 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
609 to trade time for memory. The entire database will be read at once.
610 Implemented by Ulrich Drepper.
612 * The interfaces introduced in RFC 3542 have been implemented by
615 * Support for the new ELF hash table format was added by Ulrich Drepper.
617 * Support for priority inheritance mutexes added by Jakub Jelinek and
620 * Support for priority protected mutexes added by Jakub Jelinek.
622 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
623 or_IN, csb_PL, fy_NL, sr_ME.
627 * More overflow detection functions.
629 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
630 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
632 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
633 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
634 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
635 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
636 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
637 by Masahide Washizawa.
639 * It is now possible to install audit libraries for the dynamic linker using
640 LD_AUDIT. Implemented by Ulrich Drepper.
642 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
643 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
644 For a libc and libpthread that works well on Linux 2.4 kernels, we
645 recommend using the stable 2.3 branch.
647 * The new function open_wmemstream acts like open_memstream,
648 but uses a wchar_t wide character buffer.
650 * The new function ppoll is an improved version of poll, similar to pselect.
652 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
653 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
654 renameat, unlinkat, linkat, symlinkat, readlinkat.
656 * New Linux kernel system calls: unshare,
657 inotify_init, inotify_add_watch, inotify_rm_watch.
659 * The euidaccess function is now also known by the alias eaccess,
660 for compatibility with some other systems.
662 * Timezone data updated to 2006b version.
666 * The following bugs are resolved with this release:
668 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
669 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
670 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
671 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
672 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
673 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
675 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
677 * As of this release, GCC 4 can be used to compile the C Library.
679 * Timezone data updated to 2005m version.
683 * The following bugs are resolved with this release:
685 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
686 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
687 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
688 777, 787, 821, 822, 823, 825
690 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
694 * Support for RFC 3678. Real implementations exist only for Linux so far.
695 Implemented by Ulrich Drepper.
697 * nscd can now cache entries persistently. Expiring entries are reloaded.
698 For speedups the cache can be shared in memory with client processes.
699 Implemented by Ulrich Drepper.
701 * nscd can now perform SELinux checks.
702 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
704 * getaddrinfo queries are now cached. Canonical name lookup is performed
706 Implemented by Ulrich Drepper.
708 * The nothrow function attribute is used when headers are used by gcc when
709 compiling C code. This can avoid significant amounts of exception
712 * The malloc functions perform more error checking and are stricter when
713 it comes to reacting on errors. The default action is to terminate
714 the process after showing an error message. Implemented by Ulrich Drepper.
716 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
717 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
719 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
720 namespaces using the new function dlmopen(). This feature is of course,
721 like most other dynamic loading functionality, not available in statically
722 linked applications. Implemented by Ulrich Drepper.
724 * Low-overhead boundary checking variants of string and some stdio functions
725 were added. These are to be used in conjunction with a gcc patch by
726 Jakub Jelinek which adds calls to these functions if possible.
727 Implemented by Jakub Jelinek and Ulrich Drepper.
729 * Old code for several operating systems and machine architectures that
730 have not been in working condition in a long time have been removed from
731 the main source tree maintained by the GNU C Library's maintainers.
732 These files are now reside in the separate `ports' source module
733 that is usable as an add-on when building the library.
737 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
738 interrogate the dynamic linker, compatible with the Solaris interface.
740 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
741 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
743 * getifaddrs now uses the netlink interface on Linux to get its information.
744 Implemented by Thorsten Kukuk.
746 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
747 Implemented by Ulrich Drepper.
749 * support for non-executable stacks on x86 has been added. Changes mostly
752 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
755 * getaddrinfo now performs destination address selection according to
760 * Thread-safe interfaces for many functions that access locale data
761 were added in version 2.3, but these features were omitted from NEWS.
762 Many functions have variants with an `_l' suffix that take a `locale_t'
763 object as a parameter rather than consulting the current locale.
764 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
765 create and maintain `locale_t' objects. Additionally, the new function
766 `uselocale' sets "the current locale" (as used by functions not so
767 parameterized) set for an individual thread. These features were added
768 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
770 * The functions getresuid, getresgid, setresuid, and setresgid, which
771 have long been available on Linux, are now declared in <unistd.h>
772 and are now also available on the Hurd.
774 * ELF thread-local storage support (TLS) now works on x86-64.
776 * The new dynamic string token $LIB is expanded in shared library names.
777 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
779 * Aldy Hernandez contributed complete software floating point support for
780 PowerPC machines with no FPU.
782 * fexecve is implemented on Linux.
784 * The `btowc' function should work at least twice as fast due to
785 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
787 * With approriate thread add-ons cancelable functions are now implemented
788 in libc.so as well. No need to call the function in libpthread. This
789 change allowed to finally disable the incorrect and expensive handling
790 of weak definition in ld.so.
792 * Yet more PLT entries in libc.so have been removed. We finally arrived
793 at the bare minimum. Startup times improved appropriately.
795 * Support for the new Linux/x86 system call interface was added. The
796 AT_SYSINFO auxiliary vector entry is recognized and handled.
800 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
803 * iconv (the program and the interface) now accepts empty names (excluding
804 options like //TRANSLIT) to mean "use charset of current locale".
806 * localedef can now transliterate characters in strings which are not in
807 the provided charmap. The information from the input locale is used.
809 * Prelinking support was added for ELF targets. This requires additional
810 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
812 * Read-only stdio streams now use mmap to speed up operation by eliminating
813 copying and buffer underflows. To use add 'm' to the mode string of
814 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
816 * The malloc functions were completely rewritten by Wolfram Gloger based
817 on Doug Lea's malloc-2.7.0.c.
819 * Isamu Hasegawa contributed a completely new and POSIX-conformant
820 implementation of regex.
822 * Bruno Haible upgraded the iconv and locale implementation to support
825 * Contents of the LC_* and LANG environment variables in the CEN style are
826 not recognized anymore. It never was used. Change by Ulrich Drepper.
828 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
829 thread-local storage (TLS) ABI on some platforms.
830 Changes by Ulrich Drepper. SH support by Kaz Kojima.
832 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
833 EUC-JISX0213, and TSCII.
835 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
836 BSD-compatible interface for getting all network interface addresses.
837 Implementation for IPv4 by Roland McGrath.
839 * Loading of locale data is faster due to the introduction of a locale
840 archive. Implemented by Roland McGrath and Ulrich Drepper.
842 * Startup times are significantly reduced by not using exported functions
843 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
846 * Steven Munroe contributed a port to PowerPC64/Linux.
850 * The Hurd now uses the GNU libio implementation of stdio rather than the
851 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
853 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
854 with the same behavior as the Linux system call of the same name.
858 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
859 128-bit long double format.
861 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
862 IBM1161, and IBM1162 charsets.
864 * Andreas Jaeger contributed a port to x86-64/Linux.
866 * Peter Bruin contributed a port to PowerPC/Hurd.
868 * libc functions using I/O streams now can handle wide-oriented streams
871 * optimizations in the dynamic linker. Binaries created by recent binutils
872 versions start up quicker due to reduced time spent on relocations.
874 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
878 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
879 asinh, atanh, j0 for the 128-bit long double format.
881 * Bruno Haible updated all the code handling Unicode in some form to
884 * Speed of regex for single-byte locales is back to previous levels.
885 Patch by Isamu Hasegawa.
887 * Alpha, SPARC, and IA-64 now also using floating stacks.
889 * Startup time of internationalized applications greatly improved through
890 iconv cache. Use iconvconfig to generate the cache file.
891 Contributed by Ulrich Drepper.
893 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
894 severe performance problems. Patch by David Mosberger.
896 * The Hurd port got a lot more functionality like AIO, various stdio
897 extensions, etc. Mainly done by Roland McGrath.
899 * mtrace can now lookup symbols in shared libraries.
903 * Intel's IA-64 math library is largely integrated. It provides fast and
904 accurate implementatations for most basic and standard math functions
905 in float, double, and long double format.
907 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
908 and asin for the 96-bit long double format and asin, log, tan for the
909 128-bit long double format.
911 * The beginning of a last-bit accurate math library by IBM Haifa were added.
912 The basic double functions exist today. Contributed by Abraham Ziv
913 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
914 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
916 * An asynchronous name lookup library was added. The interface is designed
917 after POSIX AIO. The proposal was circulated beforehand to get comments.
918 No negative ones came in. Implemented by Ulrich Drepper.
920 * Port to S390/64bit contributed by Martin Schwidefsky
921 <schwidefsky@de.ibm.com>.
923 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
924 of functions for Linux/IA-64.
926 * The RPC code is now thread safe. Threads can now use the same service
927 of different services at the same time. Patch by Eric Norum
928 <eric.norum@usask.ca> with some help by Ulrich Drepper.
930 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
931 family of functions for Linux/S390.
933 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
934 of functions for Linux/x86.
936 * Port to Linux/CRIS contributed by Axis Communications.
940 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
941 we can now check for namespace violations and missing declarations. The
942 result is that almost all headers are now Unix-compliant (as defined in
943 the upcoming XPG6). The negative side is that some programs might need
944 corrections, too, if they depend on the incorrect form of the headers in
945 previous versions which defined too many symbols and included too many
948 * regex now handles multibyte character sets correctly.
949 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
951 * iconv (the program) does now conform to the upcoming XPG6 and handles
952 charmaps. Instead of the charset names the path of charmaps can be
953 provided and the conversion happens based on this data.
954 Contributed by Ulrich Drepper.
956 * The locale program now provides detailed information about the installed
961 only lists the names of the supported locales
965 provides details such as country, language, and codeset name.
966 Contributed by Ulrich Drepper.
970 * The gencat program now parses the input file according to the charset
971 selected by the LC_CTYPE category. This is important for stateful
972 character sets. To make generating catalogs easier there is a way
973 to overwrite the charset selected by the locale: before the first
974 message or $ quote line the catalog can contain a line like
978 to select the charset (ISO-8859-2 in this case).
980 Implemented by Shinya Hanataka and Ulrich Drepper.
982 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
983 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
984 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
986 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
987 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
989 * The LANGUAGE environment variable is now ignored unless the locale is
990 changed from the default "C" locale.
992 * The usual bug fixes.
996 * Greg McGary added runtime support for bounds checking using gcc's
997 new -fbounded-pointers option. ix86 target is complete. PowerPC
1000 * Thorsten Kukuk added secure mode support to nscd.
1002 * The Berkeley db libraries have been removed.
1004 Related, the nss_db module is now in a separate package since it
1005 obviously requires a database library being available.
1007 * Wide character I/O streams implemented by Ulrich Drepper.
1009 * Functions from the extended socket API added by Ulrich Drepper.
1011 * Functions feenableexcept and fedisableexcept to control the
1012 behaviour of individual exceptions have been added by Andreas Jaeger.
1014 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1016 * The resolver code has been updated from bind 8.2.3-T5B which supports
1017 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1020 This change could in some situations effect backward compatibility. Since
1021 now `_res' is a thread-local instead of a global variable, modifying it
1022 in one thread does not have any effect in other threads.
1024 The resolver library was also extended to allow IPv6 as the transport
1025 protocol for the requests. This work was done by Stig Venaas.
1027 * Compatibility code for K&R C compilers has been removed from the
1028 header files. A ISO C compiler is needed to use the library
1029 (conforming to either C89 or C99 standard).
1031 * Complete rewrite of the localedef program to support multibyte character
1032 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1033 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1034 Implemented by Ulrich Drepper.
1036 Bruno Haible significantly improved the generation and use of the data
1037 structures for the wide character tables.
1039 * Plural handling in gettext implemented by Ulrich Drepper.
1041 * The utmp daemon has been removed.
1043 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1045 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1048 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1050 * POSIX barriers implemented by Kaz Kylheku.
1052 * POSIX spawn function family implemented by Ulrich Drepper.
1054 * POSIX spinlocks are now available.
1056 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1058 * the configure option --enable-kernel=X.Y.Z allows to strip out
1059 compatibility for kernel versions before X.Y.Z. This is currently only
1060 implemented for Linux.
1062 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1063 field sin6_scope_id. This means that all programs using IPv6 should be
1064 recompiled. Don't expect binary compatibility with previous glibc
1067 * various conversion modules for IBM character sets contributed by
1070 * IA-64 port by Jes Sorensen and HJ Lu.
1084 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1086 * New xdr functions are added; some rpc functions are now 64bit clean.
1088 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1090 * Fixed known incompatibilities with glibc 2.0.
1092 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1094 * Optimized a number of functions (especially the ELF dynamic loader).
1096 * Update timezone data files.
1098 * lots of charmaps corrections
1100 * some new locale definitions and charmaps
1105 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1106 conform to POSIX member type requirements. Symbol versions have been
1107 adjusted as needed within the library, and for direct use by applications,
1108 but there is potential for problems if third-party libraries use
1109 struct timeval as part of their interface. This does not present
1110 a problem for X and other "essential" system libraries.
1112 * An additional locale model to support C++ Standard Library locale
1113 model and probably more was implemented by Ulrich Drepper.
1115 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1118 * Miles Bader provided the `argp' function family to support hierachical
1119 command line argument parsing, layered on top of getopt.
1121 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1123 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1126 * scanf recognizes the %a and %A format for scanning floating point numbers.
1128 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1129 information and interfaces for the available integer types.
1131 * about 130 new math functions were added to implement the ISO C9x math
1134 * the new header <complex.h> contains definitions of the complex math
1135 functions from ISO C 9X.
1137 * the new header <tgmath.h> defines generic macros to use complex or
1138 real valued functions.
1140 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1142 * Andreas Jaeger provided a test suite for the math library.
1144 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1146 * Ulrich Drepper added character set conversion functions (iconv).
1148 * Optimized string functions have been added.
1150 * The localedata addon is now part of glibc.
1152 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1154 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1155 daemon for NSS (nscd).
1157 Missing a better place here are some numbers on improvements. Under
1158 Linux 2.1.125 un-tar-ing the kernel sources takes
1162 using local files 12.19s 6.88s 22.91s
1164 using NIS 13.92s 8.91s 26.34s
1166 using NIS & nscd 10.37s 7.34s 25.30s
1168 using NIS+ 27.57s 30.37s 640.46s
1170 using NIS+ & nscd 10.25s 7.83s 26.51s
1172 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1174 Keep in mind that non-namelookup related operations dominate above times.
1175 It was just a common complain that using NIS+ unpacking the kernel is
1178 [1] The old nscd implementation is not available anymore since it was
1179 distributed with glibc up to version 2.0.98 and thus is now replaced.
1181 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1183 * Mark Kettenis provided a Hesiod NSS module.
1185 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1186 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1188 * rcmd can now handle netgroups (Dick Streefland).
1190 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1193 * Support for the IPv6 protocol has been added to the socket API, as per the
1194 latest draft standards.
1196 * Support for Linux 2.2 has been added.
1198 * Interface changes relative to the latest 2.0.x release:
1199 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1200 addseverity NEW: Unix98
1201 alphasort64 NEW: LFS
1202 argp_err_exit_status NEW: argp, GNU ext
1203 argp_error NEW: argp, GNU ext
1204 argp_failure NEW: argp, GNU ext
1205 argp_help NEW: argp, GNU ext
1206 argp_parse NEW: argp, GNU ext
1207 argp_program_bug_address NEW: argp, GNU ext
1208 argp_program_version NEW: argp, GNU ext
1209 argp_program_version_hook NEW: argp, GNU ext
1210 argp_state_help NEW: argp, GNU ext
1211 argp_usage NEW: argp, GNU ext
1212 authdes_create NEW: Secure RPC
1213 authdes_getucred NEW: Secure RPC
1214 authdes_pk_create NEW: Secure RPC
1215 backtrace NEW: GNU ext.
1216 backtrace_symbols NEW: GNU ext.
1217 backtrace_symbols_fd NEW: GNU ext.
1219 cacosf NEW: ISO C 9x
1220 cacosh NEW: ISO C 9x
1221 cacoshf NEW: ISO C 9x
1222 cacoshl NEW: ISO C 9x
1223 cacosl NEW: ISO C 9x
1230 casinf NEW: ISO C 9x
1231 casinh NEW: ISO C 9x
1232 casinhf NEW: ISO C 9x
1233 casinhl NEW: ISO C 9x
1234 casinl NEW: ISO C 9x
1236 catanf NEW: ISO C 9x
1237 catanh NEW: ISO C 9x
1238 catanhf NEW: ISO C 9x
1239 catanhl NEW: ISO C 9x
1240 catanl NEW: ISO C 9x
1241 cbc_crypt NEW: Secure RPC
1245 ccoshf NEW: ISO C 9x
1246 ccoshl NEW: ISO C 9x
1252 cimagf NEW: ISO C 9x
1253 cimagl NEW: ISO C 9x
1254 clearerr_locked REMOVED
1255 clntunix_create NEW: sunrpc ext
1257 clog10 NEW: ISO C 9x
1258 clog10f NEW: ISO C 9x
1259 clog10l NEW: ISO C 9x
1269 cprojf NEW: ISO C 9x
1270 cprojl NEW: ISO C 9x
1272 crealf NEW: ISO C 9x
1273 creall NEW: ISO C 9x
1278 csinhf NEW: ISO C 9x
1279 csinhl NEW: ISO C 9x
1282 csqrtf NEW: ISO C 9x
1283 csqrtl NEW: ISO C 9x
1287 ctanhf NEW: ISO C 9x
1288 ctanhl NEW: ISO C 9x
1290 des_setparity NEW: Secure RPC
1291 ecb_crypt NEW: Secure RPC
1292 endutxent NEW: Unix98
1294 exp10f NEW: ISO C 9x
1295 exp10l NEW: ISO C 9x
1299 fattach NEW: STREAMS
1300 fdetach NEW: STREAMS
1304 feclearexcept NEW: ISO C 9x
1305 fegetenv NEW: ISO C 9x
1306 fegetexceptflag NEW: ISO C 9x
1307 fegetround NEW: ISO C 9x
1308 feholdexcept NEW: ISO C 9x
1310 feraiseexcept NEW: ISO C 9x
1311 ferror_locked REMOVED
1312 fesetenv NEW: ISO C 9x
1313 fesetexceptflag NEW: ISO C 9x
1314 fesetround NEW: ISO C 9x
1315 fetestexcept NEW: ISO C 9x
1316 feupdateenv NEW: ISO C 9x
1317 fflush_locked REMOVED
1321 fgets_unlocked NEW: GNU ext.
1322 fileno_locked REMOVED
1334 fputc_locked REMOVED
1335 fputs_unlocked NEW: GNU ext.
1336 fread_unlocked NEW: GNU ext.
1341 fstatvfs NEW: Unix98
1345 ftruncate64 NEW: LFS
1347 fwrite_unlocked NEW: GNU ext.
1348 gai_strerror NEW: IPv6
1352 getchar_locked REMOVED
1354 getdate_err NEW: Unix98
1355 getdate_r NEW: GNU ext.
1357 getnameinfo NEW: IPv6
1358 getnetname NEW: Secure RPC
1359 getpmsg NEW: STREAMS
1360 getpt NEW: Unix98 PTY
1361 getrlimit64 NEW: LFS
1362 getutxent NEW: Unix98
1363 getutxid NEW: Unix98
1364 getutxline NEW: Unix98
1365 glob64 NEW: GNU ext.
1366 globfree64 NEW: GNU ext.
1367 gnu_get_libc_release NEW: GNU ext.
1368 gnu_get_libc_version NEW: GNU ext.
1369 grantpt NEW: Unix98 PTY
1370 host2netname NEW: Secure RPC
1372 iconv_close NEW: iconv
1373 iconv_open NEW: iconv
1374 if_freenameindex NEW: IPv6
1375 if_indextoname NEW: IPv6
1376 if_nameindex NEW: IPv6
1377 if_nametoindex NEW: IPv6
1378 in6addr_any NEW: IPv6
1379 in6addr_loopback NEW: IPv6
1380 inet6_isipv4mapped NEW: IPv6
1381 isastream NEW: STREAMS
1382 iswblank NEW: GNU ext.
1383 key_decryptsession NEW: Secure RPC
1384 key_decryptsession_pk NEW: Secure RPC
1385 key_encryptsession NEW: Secure RPC
1386 key_encryptsession_pk NEW: Secure RPC
1387 key_gendes NEW: Secure RPC
1388 key_get_conv NEW: Secure RPC
1389 key_secretkey_is_set NEW: Secure RPC
1390 key_setnet NEW: Secure RPC
1391 key_setsecret NEW: Secure RPC
1392 llrint NEW: ISO C 9x
1393 llrintf NEW: ISO C 9x
1394 llrintl NEW: ISO C 9x
1395 llround NEW: ISO C 9x
1396 llroundf NEW: ISO C 9x
1397 llroundl NEW: ISO C 9x
1402 lrintf NEW: ISO C 9x
1403 lrintl NEW: ISO C 9x
1404 lround NEW: ISO C 9x
1405 lroundf NEW: ISO C 9x
1406 lroundl NEW: ISO C 9x
1408 makecontext NEW: Unix98
1409 mempcpy NEW: GNU ext.
1412 modify_ldt NEW: kernel
1416 nearbyint NEW: ISO C 9x
1417 nearbyintf NEW: ISO C 9x
1418 nearbyintl NEW: ISO C 9x
1419 netname2host NEW: Secure RPC
1420 netname2user NEW: Secure RPC
1421 nexttoward NEW: ISO C 9x
1422 nexttowardf NEW: ISO C 9x
1423 nexttowardl NEW: ISO C 9x
1427 passwd2des NEW: Secure RPC
1429 pow10f NEW: GNU ext.
1430 pow10l NEW: GNU ext.
1433 printf_size NEW: GNU ext.
1434 printf_size_info NEW: GNU ext.
1435 profil_counter REMOVED
1436 pthread_mutexattr_getkind_np REPLACED
1437 pthread_mutexattr_setkind_np REPLACED
1438 ptsname NEW: Unix98 PTY
1439 ptsname_r NEW: Unix98 PTY
1441 putchar_locked REMOVED
1442 putgrent NEW: GNU ext.
1444 putpmsg NEW: STREAMS
1445 pututxline NEW: Unix98
1449 readdir64_r NEW: LFS
1450 remquo NEW: ISO C 9x
1451 remquof NEW: ISO C 9x
1452 remquol NEW: ISO C 9x
1454 roundf NEW: ISO C 9x
1455 roundl NEW: ISO C 9x
1457 scalbln NEW: ISO C 9x
1458 scalblnf NEW: ISO C 9x
1459 scalblnl NEW: ISO C 9x
1461 sendfile NEW: kernel
1462 setcontext NEW: Unix98
1463 setrlimit64 NEW: LFS
1464 setutxent NEW: Unix98
1466 sigignore NEW: Unix98
1467 sigqueue NEW: POSIX.1b
1468 sigrelse NEW: Unix98
1469 sigset NEW: POSIX.1b
1470 sigtimedwait NEW: POSIX.1b
1471 sigwaitinfo NEW: POSIX.1b
1472 sincos NEW: GNU ext.
1473 sincosf NEW: GNU ext.
1474 sincosl NEW: GNU ext.
1478 strcasestr NEW: GNU ext.
1479 strtoimax NEW: ISO C 9x
1480 strtoumax NEW: ISO C 9x
1481 strverscmp NEW: GNU ext.
1482 svcauthdes_stats NEW: Secure RPC
1483 svcunix_create NEW: sunrpc etx
1484 svcunixfd_create NEW: sunrpc ext
1485 swapcontext NEW: Unix98
1486 tcgetsid NEW: Unix98 PTY
1487 tdestroy NEW: GNU ext.
1488 tgamma NEW: ISO C 9x
1489 tgammaf NEW: ISO C 9x
1490 tgammal NEW: ISO C 9x
1494 truncf NEW: ISO C 9x
1495 truncl NEW: ISO C 9x
1497 unlockpt NEW: Unix98 PTY
1498 updwtmpx NEW: Unix98
1499 user2netname NEW: Secure RPC
1500 utmpxname NEW: Unix98
1501 versionsort NEW: GNU ext.
1502 versionsort64 NEW: GNU ext.
1504 wcscasecmp NEW: GNU ext.
1505 wcsncasecmp NEW: GNU ext.
1506 wcsnlen NEW: GNU ext.
1507 wcstoimax NEW: ISO C 9x
1508 wcstoll NEW: ISO C 9x
1509 wcstoull NEW: ISO C 9x
1510 wcstoumax NEW: ISO C 9x
1512 wordexp NEW: POSIX.2
1513 wordfree NEW: POSIX.2
1514 write_profiling REMOVED
1515 xdecrypt NEW: Secure RPC
1516 xdr_authdes_cred NEW: Secure RPC
1517 xdr_authdes_verf NEW: Secure RPC
1518 xdr_cryptkeyarg NEW: Secure RPC
1519 xdr_cryptkeyarg2 NEW: Secure RPC
1520 xdr_cryptkeyres NEW: Secure RPC
1521 xdr_getcredres NEW: Secure RPC
1522 xdr_key_netstarg NEW: Secure RPC
1523 xdr_key_netstres NEW: Secure RPC
1524 xdr_keybuf NEW: Secure RPC
1525 xdr_keystatus NEW: Secure RPC
1526 xdr_netnamestr NEW: Secure RPC
1527 xdr_sizeof NEW: Secure RPC
1528 xdr_unixcred NEW: sunrpc ext
1529 xencrypt NEW: Secure RPC
1530 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1541 * inet_ntoa is thread-safe
1543 * updwtmp is moved from libutil to libc
1545 * rewrite of cbrt function
1547 * update of timezone data
1561 * add atoll function
1563 * fix complex problems in Berkeley DB code
1565 * fix math functions
1569 * fixed lots of header problems (especially Linux/GNU specific)
1571 * dynamic loader preserves all registers
1573 * Roland McGrath provided support for handling of auxiliary objects in
1574 the ELF dynamic loader.
1576 * support for parallel builds is improved
1580 * GNU extensions are no longer declared by default. To enable them you
1581 must define the macro `_GNU_SOURCE' in your program or compile with
1584 * The library has changed from using GNU ld symbol aliases to using weak
1585 symbols where available. The ELF object file format supports weak
1586 symbols; GNU ld also supports weak symbols in the a.out format. (There
1587 is also now support for other GNU ld extensions in ELF. Use the
1588 `--with-elf' option to configure to indicate you have ELF, and
1589 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1590 of many files which contained only symbol aliases, reducing the size of
1591 the source and the compiled library; many other files were renamed to
1592 less cryptic names previously occupied by the symbol alias files.
1593 There is a new header file <elf.h> for programs which operate on
1594 files in the ELF format.
1596 * Converted to Autoconf version 2, so `configure' has more options.
1597 Run `configure --help' to see the details.
1599 * The library can now be configured to build profiling, highly-optimized
1600 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1601 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1602 `configure' enable building these extra libraries. The shared library is
1603 built by default when using both ELF and GNU ld. When shared libraries
1604 are enabled, the new library `-ldl' is available for arbitrary run-time
1605 loading of shared objects; its interface is defined in <dlfcn.h>. The
1606 new header file <link.h> gives access to the internals of the run-time
1607 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1608 application of same name on other systems and it provides information
1609 about dynamically linked binaries.
1611 * The C library now provides the run-time support code for profiling
1612 executables compiled with `-pg'. Programs can control the profiling code
1613 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1614 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1615 the support for this file format was contributed by David Mosberger-Tang.
1617 * The math code has been replaced with a math library based on fdlibm from
1618 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1619 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1620 functions. The math functions now reside in a separate library, so
1621 programs using them will need to use `-lm' their linking commands.
1623 * John C. Bowman contributed optimized ix87 assembler inline functions.
1625 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1626 mechanism similar to that found in Solaris 2. This is now used for the
1627 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1628 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1629 file controls what services are used for each individual database. This
1630 works by loading shared libraries with names specified in `nsswitch.conf',
1631 so service modules can be changed or added at any time without even
1632 relinking any program. Currently there are the file, db, and NIS based
1633 NSS services available.
1635 * The new functions `strtoq' and `strtouq' parse integer values from
1636 strings, like `strtol' and `strtoul', but they return `long long int' and
1637 `unsigned long long int' values, respectively (64-bit quantities).
1639 * The new functions `strtof' and `strtold' parse floating-point values from
1640 strings, like `strtod', but they return `float' and `long double' values,
1641 respectively (on some machines `double' and `long double' are the same).
1643 * Ulrich Drepper has contributed new implementations of the floating-point
1644 printing and reading code used in the `printf' family of functions and
1645 `strtod', `strtof', and `strtold'. These new functions are perfectly
1646 accurate, and much faster than the old ones.
1648 * The implementation of the POSIX locale model was completely rewritten by
1649 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1650 to compile the POSIX locale definition.
1652 * The former dummy implementations of the strcoll and strxfrm function are
1653 now replaced by fully functional code contributed by Ulrich Drepper. The
1654 collation information comes from the POSIX locale definitions.
1656 * The new header <langinfo.h> defines an interface for accessing
1657 various locale-dependent data (using the locale chosen with `setlocale').
1659 * Ulrich Drepper has contributed a new suite of functions for operation on
1660 wide-character and multibyte-character strings, in <wchar.h>;
1661 and classification and case conversion of wide characters, in <wctype.h>.
1662 These new functions are conforming to the ISO C, Amendement 1 specification.
1664 * There is now a second implementation of the standard I/O library available.
1665 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1666 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1668 * You can now use positional parameter specifications in format strings
1669 for the `printf' and `scanf' families of functions. For example,
1670 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1671 ``Number 6, Mr Jones''. This is mainly useful when providing different
1672 format strings for different languages, whose grammars may dictate
1673 different orderings of the values being printed. To support this
1674 feature, the interface for `register_printf_handler' has changed; see
1675 the header file <printf.h> for details.
1677 * The `printf' and `scanf' families of functions now understand a new
1678 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1679 to group numbers as indicated by the locale; for `scanf' and friends, this
1680 says to accept as valid only a number with all the proper grouping
1681 separators in the right places. In the default "C" locale, numbers are
1682 not grouped; but locales for specific countries will define the usual
1683 conventions (i.e. separate thousands with `,' in the US locale).
1685 * The pgrp functions have been regularized, slightly incompatibly but much
1686 less confusingly. The core functions are now `getpgid' and `setpgid',
1687 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1688 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1689 provided for compatibility. There is no longer an incompatible `getpgrp'
1690 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1692 * The new header file <fts.h> and suite of functions simplify programs that
1693 operate on directory trees. This code comes from 4.4 BSD.
1695 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1696 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1697 NSS scheme used in glibc.
1699 * There is a new malloc debugging hook `__memalign_hook'.
1701 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1702 `unsigned int' in <sys/types.h>. These are for compatibility only and
1703 their use is discouraged.
1705 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1706 done differently, so that it works even without GNU ld.
1708 * New function `euidaccess' checks allowed access to a file like `access',
1709 but using the effective IDs instead of the real IDs.
1711 * The time zone data files have been updated for the latest and greatest
1712 local time conventions of the countries of the world.
1714 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1717 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1718 for formatting floating-point numbers. They are provided only for
1719 compatibility; new programs should use `sprintf' instead. There are
1720 also equivalent function for the `long double' floating-point type and
1721 all functions also exist in a reentrant form.
1723 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1724 functions for maintaining the login-record files (primarily of use to
1725 system programs such as `login'), and convenient functions for
1726 allocating and initializing a pseudo-terminal (pty) device.
1728 * Ulrich Drepper has contributed new support for System V style
1729 shared memory and IPC on systems that support it.
1731 * Ulrich Drepper has contributed several miscellaneous new functions found
1732 in System V: The `hsearch' family of functions provide an effective
1733 implementation of hash tables; `a64l' and `l64a' provide a very simple
1734 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1737 * Ulrich Drepper has contributed new reentrant counterparts for the
1738 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1740 * Ulrich Drepper has contributed new, highly-optimized versions of several
1741 string functions for the i486/Pentium family of processors.
1743 * Ulrich Drepper has updated the Linux-specific code, based largely
1744 on work done in Hongjiu Lu's version of GNU libc for Linux.
1745 The GNU library now supports Linux versions 2.0.10 and later,
1746 using the ELF object file format (i[3456]86-*-linux).
1748 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1750 * David Mosberger-Tang and Richard Henderson have ported the C library
1751 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1752 dynamic linking support for ELF/Alpha.
1754 * Richard Henderson contributed several Alpha optimized assembler function
1755 for arithmetic and string handling.
1757 * Ulrich Drepper has contributed a new set of message catalog functions to
1758 support multiple languages using the <libintl.h> interface, for use with
1759 his new package GNU gettext. Translation volunteers have contributed
1760 catalogs of the library's messages in Spanish, German, and Korean.
1762 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1763 program and the `catgets' function for reading the catalog files it
1764 creates. (The <libintl.h> interface is preferred; we include the
1765 <nl_types.h> interface using `catgets' only for source compatibility with
1766 programs already written to use it.)
1768 * New header file <values.h> gives SVID-compatible names for <limits.h>
1771 * Various new macros, declarations, and small header files for compatibility
1774 * New function `group_member' is a convenient way to check if a process has
1775 a given effective group ID.
1777 * When using GCC 2.7 and later, the socket functions are now declared in a
1778 special way so that passing an argument of type `struct sockaddr_in *',
1779 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1780 `struct sockaddr *' type, does not generate a type-clash warning.
1782 * New function `error' declared in header file <error.h> is a convenient
1783 function for printing error messages and optionally exiting; this is the
1784 canonical function used in GNU programs. The new functions `err', `warn',
1785 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1786 doing the same thing.
1788 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1789 POSIX.2 `glob' function to do ~ and {...} expansion.
1791 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1792 `clearenv' which is used in POSIX.9 is also available.
1794 * New function `getsid' returns session ID number on systems that support it.
1796 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1797 files <db.h> and <mpool.h> provide a rich set of functions for several
1798 types of simple databases stored in memory and in files, and <ndbm.h> is
1799 an old `ndbm'-compatible interface using the `db' functions. Link with
1800 `-ldb' to get these functions.
1802 * New macro `strdupa' copies a string like `strdup', but uses local stack
1803 space from `alloca' instead of dynamic heap space from `malloc'.
1805 * New function `strnlen' is like `strlen' but searches only a given maximum
1806 number of characters for the null terminator. `stpncpy', `strndup' and
1807 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1810 * New function `statfs' in header <sys/statfs.h>.
1812 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1813 provide convenient functions for operating on blocks of null-terminated
1816 * A new suite of functions in <utmp.h> handle all the details of reading
1817 and writing the utmp file.
1819 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1822 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1823 completely POSIX compliant and also implemented the extended functionality
1824 to handle alternate digit representation and alternate era date formats.
1826 * Ulrich Drepper provided an implementation of the `strptime' function
1827 defined in XPG4.2 which transforms a string into a `struct tm' value.
1829 * Paul Eggert provided the tzselect shell script as part of the timezone
1830 code. The shell script makes it easy to select the correct timezone
1833 * The implementation of the malloc family of functions is completely replaced
1834 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1835 The implementation uses the mmap function (if available) and it is
1836 optimized for the use in multi threaded programs.
1838 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1839 functions. This new functionality is usable by specifying a special
1840 salt string and it is compatible with implementation on *BSD systems.
1842 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1843 `getsubopt' to handle second level command line options, `bsd_signal'
1844 to access BSD style `signal' functionality, the obsolete `regexp' style
1847 * the `lchown' function is available on system which support this
1850 * The implementation of the shadow password handling function was contributed
1853 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1855 * POSIX.1g support was added. The <sys/select.h> header is available,
1856 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1857 implementation of `getaddrinfo'.
1861 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1863 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1864 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1866 * The new function `daemon' from 4.4 BSD is useful for server programs that
1867 want to put themselves in the background.
1869 * Joel Sherrill has contributed support for several standalone boards that
1870 run without an operating system.
1872 * `printf', `scanf' and friends now accept a `q' type modifier for long
1873 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1875 * All of the code taken from BSD (notably most of the math and networking
1876 routines) has been updated from the BSD 4.4-Lite release.
1878 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1880 * The new functions `getdomainname' and `setdomainname' fetch or change the
1881 YP/NIS domain name. These are system calls which exist on systems which
1884 * The time zone data files have been updated for the latest international
1887 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1888 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1892 * The C library now includes support for Sun RPC, from Sun's free
1893 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1894 are included. (There is still no support for YP.)
1896 * Tom Quinn has contributed a port of the C library to SGI machines running
1897 Irix 4 (mips-sgi-irix4).
1899 * The new `lockf' function is a simplified interface to the locking
1900 facilities of `fcntl', included for compatibility.
1902 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1904 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1906 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1909 * The error message printed by `assert' for a failed assertion now includes
1910 the name of the program (if using GNU ld) and the name of the calling
1911 function (with versions of GCC that support this).
1913 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1915 * The library now includes the <sys/mman.h> header file and memory
1916 management functions `mmap', `munmap', `mprotect', `msync', and
1917 `madvise', on systems that support those facilities.
1919 * The interface for `mcheck' has changed slightly: the function called to
1920 abort the program when an allocation inconsistency is detected now takes
1921 an argument that indicates the type of failure. The new function
1922 `mprobe' lets you request a consistency check for a particular block at
1923 any time (checks are normally done only when you call `free' or `realloc'
1926 * It is now possible to easily cross-compile the C library, building on one
1927 system a library to run on another machine and/or operating system. All
1928 you need to do is set the variable `HOST_CC' in `configparms' to the
1929 native compiler for programs to run on the machine you are building on (a
1930 few generator programs are used on Unix systems); set `CC' to the
1933 * The new function `fexecve' (only implemented on the GNU system) executes
1934 a program file given a file descriptor already open on the file.
1938 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1939 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1941 * You can set the variable `libprefix' in `configparms' to specify a prefix
1942 to be prepended to installed library files; this makes it easy to install
1943 the GNU C library to be linked as `-lgnuc' or whatever.
1945 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1946 copies a limited number of characters from a string, and returns the
1947 address of the last character written.
1949 * You no longer need to check for whether the installed `stddef.h' is
1950 compatible with the GNU C library. configure now checks for you.
1952 * You can now define a per-stream `fileno' function to convert the
1953 stream's cookie into an integral file descriptor.
1955 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1956 allocates zero bytes of storage, and returns a unique pointer which
1957 you can pass to `realloc' or `free'. The behavior is undefined if
1958 you dereference this pointer.
1960 * The C library now runs on Sony NEWS m68k machines running either
1961 NewsOS 3 or NewsOS 4.
1963 * The new `syscall' function is a system-dependent primitive function
1964 for invoking system calls. It has the canonical behavior on Unix
1965 systems, including unreliable return values for some calls (such as
1966 `pipe', `fork' and `getppid').
1968 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1969 to `EAGAIN', which is the preferred name. On systems whose kernels
1970 use two distinct codes, the C library now translates EWOULDBLOCK to
1971 EAGAIN in every system call function.
1975 * The GNU C Library Reference Manual is now distributed with the library.
1976 `make dvi' will produce a DVI file of the printed manual.
1977 `make info' will produce Info files that you can read on line using C-h i
1978 in Emacs or the `info' program.
1979 Please send comments on the manual to bug-glibc-manual@gnu.org.
1981 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1983 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1985 * Jason Merrill has contributed a port to the Sequent Symmetry running
1986 Dynix version 3 (i386-sequent-dynix).
1988 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1989 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1991 * New function `memory_warnings' lets you arrange to get warnings when
1992 malloc is running out of memory to allocate, like Emacs gives you.
1994 * The C library now contains the relocating allocator used in Emacs 19 for
1995 its editing buffers. This allocator (ralloc) minimizes allocation
1996 overhead and fragmentation by moving allocated regions around whenever it
1997 needs to. You always refer to a ralloc'd region with a "handle" (a
1998 pointer to a pointer--an object of type `void **').
2000 * There is a new `printf' format: `%m' gives you the string corresponding
2001 to the error code in `errno'.
2003 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2004 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2005 pass, the `a' modifier says to fill in a `char **' you pass with a
2008 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2009 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2010 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2012 * `mkstemp' is a traditional Unix function to atomically create and open a
2013 uniquely-named temporary file.
2017 * The standard location for the file that says what the local timezone is
2018 has changed again. It is now `/usr/local/etc/localtime' (or more
2019 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2021 * The distribution no longer contains any files with names longer than 14
2024 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2025 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2027 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2031 * The configuration process has changed quite a bit. The `configure'
2032 script is now used just like the configuration scripts for other GNU
2033 packages. The `sysdeps' directory hierarchy is much rearranged.
2034 The file `INSTALL' explains the new scheme in detail.
2036 * The header files no longer need to be processed into ANSI C and
2037 traditional C versions. There is just one set of files to install, and
2038 it will work with ANSI or old C compilers (including `gcc -traditional').
2040 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2041 MIPS DECStation running Ultrix 4.
2043 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2044 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2045 made itself into a shared library.
2047 * Yet further improved support for the i386, running 4.3 BSD-like systems
2048 (such as Mach 3 with the Unix single-server), or System V.
2050 * New function `strncasecmp' to do case-insensitive string comparison
2051 with limited length.
2053 * New function `strsep' is a reentrant alternative to `strtok'.
2055 * New functions `scandir' and `alphasort' for searching directories.
2057 * New function `setenv' is a better interface to `putenv'.
2059 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2060 function for traversing a directory tree.
2062 * The GNU obstack package is now also part of the C library.
2063 The new function `open_obstack_stream' creates a stdio stream that
2064 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2065 formatted output directly to an obstack.
2067 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2068 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2070 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2072 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2073 things to your strings.
2075 * There are some new test programs: test-fseek, testmb, and testrand.
2077 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2078 These ports are not finished, but are a good starting place for really
2079 supporting those systems.
2081 * `/etc/localtime' is now the standard location for the file that says what
2082 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2083 This follows the general principle that `/etc' is the place for all local
2084 configuration files.
2086 * The C library header files now use `extern "C"' when used by the C++
2087 compiler, so the C library should now work with C++ code.
2089 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2090 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2093 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2094 function which uses the `merge sort' algorithm, and is said to be
2095 significantly faster than the old GNU `qsort' function. Merge sort is
2096 now the standard `qsort' function. The new algorithm can require a lot
2097 of temporary storage; so, the old sorting function is called when the
2098 required storage is not available.
2100 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2101 provides the Unix `crypt' function, plus some other entry points.
2103 * The code and header files taken from 4.4 BSD have been updated with the
2104 latest files released from Berkeley.
2106 ----------------------------------------------------------------------
2107 Copyright information:
2109 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2111 Permission is granted to anyone to make or distribute verbatim copies
2112 of this document as received, in any medium, provided that the
2113 copyright notice and this permission notice are preserved,
2114 thus giving the recipient permission to redistribute in turn.
2116 Permission is granted to distribute modified versions
2117 of this document, or of portions of it,
2118 under the above conditions, provided also that they
2119 carry prominent notices stating who last changed them.
2122 version-control: never
projects / platform / upstream / glibc.git / blob