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:
15 * The following bugs are resolved with this release:
17 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
18 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
19 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
20 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
21 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
22 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
23 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
24 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
25 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
26 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
27 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
28 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
29 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
30 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
31 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
32 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
33 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
34 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
35 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
36 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
37 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
38 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
41 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
42 configuring glibc with:
43 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
44 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
45 Implemented by H.J. Lu.
49 + define static_assert
53 + declare at_quick_exit and quick_exit also for ISO C11
55 + aligned_alloc. NB: The code is deliberately allows the size parameter
56 to not be a multiple of the alignment. This is a moronic requirement
57 in the standard but it is only a requirement on the caller, not the
62 + uchar.h support added
64 + CMPLX, CMPLXF, CMPLXL added
66 Implemented by Ulrich Drepper.
68 * Support for the IA-64 has been moved to ports.
70 * Remove support for anything but ELF binary format
72 * Checking versions of poll, ppoll added.
73 Implemented by Ulrich Drepper.
75 * More generic and 64-bit performance optimizations to math functions.
76 Implemented by Ulrich Drepper.
78 * New configure option --enable-obsolete-rpc makes the deprecated RPC
79 headers and functions available at compile time as they were before
80 version 2.14. This option will be removed at some time in the future
81 after the TI-RPC library becomes fully sufficient for the needs of
82 existing applications.
84 * Compatibility code for Linux kernel versions before 2.4 has been removed.
85 Note that glibc is not expected to work with any Linux kernel version
88 * New header <sys/auxv.h> and function getauxval allowing easy access to
89 the AT_* key-value pairs passed from the Linux kernel. The header also
90 defines the HWCAP_* bits associated with the AT_HWCAP key.
94 * New configure option --enable-systemtap builds SystemTap static probes
95 into libc for setjmp and longjmp and into libpthread for various operations.
96 So far the setjmp/longjmp probes and some of the libpthread probes are
97 provided only for i*86 and x86_64.
98 Implemented by Roland McGrath and Rayson Ho.
100 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
102 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
105 * More optimized functions for SPARC. Implemented by David S. Miller.
107 * Improved support for cross-compilation, especially bootstrap builds
108 without a previously built glibc.
110 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
111 Chris Metcalf from Tilera.
113 * Support for the old ARM ABI has been removed from ports. Only the EABI is
114 now supported for ARM processors.
116 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
117 as the name of the dynamic linker, to distinguish it from the
118 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
120 * Support for CRIS has been removed from ports.
122 * A new class of installed header has been documented for low-level
123 platform-specific functionality. PowerPC added the first instance with a
124 function to provide time base register access. Contributed by Tulio
125 Magno Quites Machado Filho.
127 * ix86 configurations now install header files that are consistent with
128 what x86-64 configurations install. These same header files can be used
129 for -m32, -m64, or -mx32 builds.
130 Contributed by H.J. Lu.
132 * Math library bug fixes. A thorough audit of all open math library bugs was
133 conducted by Joseph Myers. Significant progress was made on many math
134 library bugs resulting in more accurate exceptions and function results.
135 Many thanks to all those that contributed including Andreas Jaeger for his
136 patch review and work on the x87 trigonometric instruction issues.
138 * Timezone data is no longer installed. Timezone-related binaries and scripts
139 will continue to be installed. Users should obtain their timezone data from
140 their distribution provider or from the tzdata package at
141 <ftp://munnari.oz.au/pub/>.
145 * The following bugs are resolved with this release:
147 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
148 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
149 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
150 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
151 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
152 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
153 13484, 13506, 13515, 13523, 13524, 13538, 13540
155 * New program pldd to list loaded object of a process
156 Implemented by Ulrich Drepper.
158 * Add nss_db support back to glibc. No more dependency on Berkeley db
159 and support for initgroups lookups.
160 Implemented by Ulrich Drepper.
162 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
163 Contributed by HJ Lu.
165 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
166 Contributed by HJ Lu.
168 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
169 on x86-32 and x86-64.
170 Contributed by Liubov Dmitrieva.
172 * Optimized strchr and strrchr for SSE on x86-32.
173 Contributed by Liubov Dmitrieva.
175 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
176 for x86-64 and x86-32.
177 Contributed by Liubov Dmitrieva.
179 * New interfaces: scandirat, scandirat64
180 Implemented by Ulrich Drepper.
182 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
183 Implemented by Ulrich Drepper.
185 * nscd now also caches the netgroup database.
186 Implemented by Ulrich Drepper.
188 * Integrate libm with gcc's -ffinite-math-only option.
189 Implemented by Ulrich Drepper.
191 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
192 to math functions. Implemented by Ulrich Drepper.
194 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
195 Implemented by Ulrich Drepper.
197 * New Linux interfaces: process_vm_readv, process_vm_writev
199 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
200 Implemented by Ulrich Drepper.
202 * Optimized nearbyint and strcasecmp for PPC.
203 Implemented by Adhemerval Zanella.
205 * New locales: bho_IN, unm_US, es_CU, ta_LK
209 * The following bugs are resolved with this release:
211 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
212 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
213 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
214 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
215 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
216 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
217 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
218 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
219 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
220 12795, 12811, 12813, 12814, 12841
222 * The RPC implementation in libc is obsoleted. Old programs keep working
223 but new programs cannot be linked with the routines in libc anymore.
224 Programs in need of RPC functionality must be linked against TI-RPC.
225 The TI-RPC implementation is IPv6 enabled and there are other benefits.
227 Visible changes of this change include (obviously) the inability to link
228 programs using RPC functions without referencing the TI-RPC library and the
229 removal of the RPC headers from the glibc headers.
230 Implemented by Ulrich Drepper.
232 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
233 syncfs, setns, sendmmsg
235 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
236 yue_HK, lij_IT, mhr_RU
238 * New encodings: CP770, CP771, CP772, CP773, CP774
240 * New program sotruss to trace calls through PLTs
241 Implemented by Ulrich Drepper.
243 * The malloc hook implementation is marked deprecated and will be removed
244 from the default implementation in the next version. The design never
245 worked ever since the introduction of threads. Even programs which do
246 not create threads themselves can use multiple threads created internally.
250 * The following bugs are resolved with this release:
252 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
253 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
254 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
255 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
258 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
260 * POWER7 optimizations: memset, memcmp, strncmp
262 * New optimized string functions for x86-64: strnlen (SSE2),
263 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
264 Implemented by Ulrich Drepper.
268 * The following bugs are resolved with this release:
270 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
271 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
272 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
273 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
274 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
275 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
276 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
277 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
279 * New interfaces: pthread_getname_np, pthread_setname_np
281 * New Linux interface: recvmmsg
283 * STT_GNU_IFUNC implemented for Sparc by David Miller.
285 * The dynamic linker now recognizes supported ABI versions from the
286 EI_ABIVERSION field in the ELF header.
287 Implemented by Ulrich Drepper.
289 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
290 will not be used to fill in password fields in the passwd.byname replies.
291 Instead it is used to synthesize the shadow.byname table, should it be
292 missing. This is a useful mode in some installations involving Solaris.
293 Implemented by Ulrich Drepper.
295 * New locales: kok_IN, sq_MK, cv_RU
299 * The following bugs are resolved with this release:
301 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
302 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
303 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
304 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
305 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
306 10789, 10817, 10823, 10840, 10847
308 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
310 Implemented by Ulrich Drepper.
312 * Checking version of longjmp added that fails if an uninitialized stack
313 frame would be created. Implemented by Ulrich Drepper.
315 * STT_GNU_IFUNC is now supported in static executables.
316 Implemented by H.J. Lu.
318 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
320 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
321 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
322 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
323 Contributed by H.J. Lu.
325 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
326 Implemented by Ulrich Drepper.
328 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
330 Contributed by H.J. Lu.
332 * Support for fma instruction in AVX on x86-64.
333 Implemented by H.J. Lu and Ulrich Drepper.
335 * AVX support in x86-64 auditing support in ld.so.
336 Implemented by H.J. Lu.
338 * STB_GNU_UNIQUE support added.
339 Implemented by Ulrich Drepper.
341 * Implement second fallback mode for optimized DNS lookup for even more
342 broken environments. If two requests from the same port are not
343 handled correctly close the socket and open a new one before sending
344 the second request. The 'single-request-reopen' option in /etc/resolv.conf
345 can be used to select this mode right away, instead of rediscovering the
346 necessity is every process again.
347 Implemented by Ulrich Drepper.
349 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
350 Implemented by Adam Tkac.
352 * Optimized iconv conversions for S390x.
353 Implemented by Andreas Krebbel.
355 * Using condvars with PI mutexes is now more efficient due to kernel
356 support for requeueing to PI futexes. NPTL support added for x86-64.
357 Implemented by Ulrich Drepper.
359 * New locales: ps_AF, my_MM
363 * The following bugs are resolved with this release:
365 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
366 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
367 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
368 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
369 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
371 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
372 Implemented by Ulrich Drepper.
374 * New Linux interfaces: accept4, fallocate, fallocate64.
375 Implemented by Ulrich Drepper.
377 * Correct declarations of string function when used in C++ code. This
378 could lead to compile errors for invalid C++ code.
380 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
383 * New POSIX 2008 interface: psiginfo
384 Implemented by Ulrich Drepper.
386 * New ISO C++1x interfaces: quick_exit, at_quick_exit
387 Implemented by Ulrich Drepper.
389 * Support for selecting between multiple function definitions at runtime
390 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
392 * The libcrypt library can now use the hash function implementations in
393 NSS. Implemented by Ulrich Drepper.
395 * The malloc implementation can be compiled to be less memory efficient
396 but higher performing in multi-threaded programs.
397 Implemented by Ulrich Drepper.
399 * New locales: nan_TW@latin, ks_IN
401 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
402 Implemented by Ulrich Drepper.
404 * Extended printf hook support. It is possible to use user-defined types
405 and extend existing format specifiers.
406 Implemented by Ulrich Drepper.
408 * Handling for group shadow files has been added.
409 Implemented by Ulrich Drepper.
411 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
412 servers (the case, e.g., for some people using the built-in DNS
413 server in ADSL modems/routers). There is a once-per-process timeout
414 in case of a broken server. To avoid it, users can run nscd or put
415 'options single-request' in /etc/resolv.conf.
416 Implemented by Ulrich Drepper.
420 * The following bugs are resolved with this release:
422 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
423 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
424 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
425 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
426 6968, 6974, 6980, 6995, 7008, 7009, 7029
428 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
429 up at the same time. Implemented by Ulrich Drepper.
431 * TLS descriptors for LD and GD on x86 and x86-64.
432 Implemented by Alexandre Oliva.
434 * getaddrinfo now handles DCCP and UDPlite.
435 Implemented by Ulrich Drepper.
437 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
438 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
439 Implemented by Ulrich Drepper.
441 * New implementation of memmem, strstr, and strcasestr which is O(n).
442 Implemented by Eric Blake.
444 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
446 * Implement "e" option for popen to open file descriptor with the
447 close-on-exec flag set. Implemented by Ulrich Drepper.
449 * Implement "b" mode for fmemopen. In this mode writes writes don't
450 implicitly add a NUL byte and seeks from the end of the buffer really
451 use the buffer end, not the string length as the basis.
452 Implemented by Ulrich Drepper.
454 * Many functions, exported and internal, now atomically set the close-on-exec
455 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
457 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
459 Implemented by Pravin Satpute.
461 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
465 * The following bugs are resolved with this release:
467 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
468 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
469 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
470 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
471 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
472 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
473 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
475 * New locales: bo_CN, bo_IN, shs_CA.
477 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
479 * Sorting rules for some Indian languages (Devanagari and Gujarati).
480 Implemented by Pravin Satpute.
482 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
484 * nscd caches now all timeouts for DNS entries
485 Implemented by Ulrich Drepper.
487 * nscd is more efficient and wakes up less often.
488 Implemented by Ulrich Drepper.
490 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
491 vdprintf, and obstack_vprintf.
492 Implemented by Jakub Jelinek.
494 * Faster memset for x86-64.
495 Implemented by Harsha Jagasia and H.J. Lu.
497 * Faster memcpy on x86.
498 Implemented by Ulrich Drepper.
500 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
501 Implemented by Ulrich Drepper.
503 * Faster sqrt and sqrtf implemention for some PPC variants.
504 Implemented by Steven Munroe.
508 * The following bugs are resolved with this release:
510 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
511 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
512 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
513 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
514 5071, 5103, 5104, 5112, 5113, 5184, 5186
516 * More checking functions: fread, fread_unlocked, open*, mq_open.
517 Implemented by Jakub Jelinek and Ulrich Drepper.
519 * Extend fortification to C++. Implemented by Jakub Jelinek.
521 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
522 by not recognizing 'a' as a modifier when those specs are requested.
523 Implemented by Jakub Jelinek.
525 * PPC optimizations to math and string functions.
526 Implemented by Steven Munroe.
528 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
529 options to be passed. Implemented by Ulrich Drepper.
531 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
533 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
534 Implemented by Ulrich Drepper.
536 * Handle private futexes in the NPTL implementation.
537 Implemented by Jakub Jelinek and Ulrich Drepper.
539 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
540 Implemented by Roland McGrath and Ulrich Drepper.
542 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
544 * SHA-256 and SHA-512 based password encryption.
545 Implemented by Ulrich Drepper.
547 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
548 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
551 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
552 Implemented by Ulrich Drepper.
556 * The following bugs are resolved with this release:
558 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
559 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
560 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
561 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
562 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
563 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
564 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
567 * New Linux interfaces: epoll_pwait, sched_getcpu.
569 * New generic interfaces: strerror_l.
571 * nscd can now cache the services database. Implemented by Ulrich Drepper.
575 * The following bugs are resolved with this release:
577 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
578 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
579 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
580 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
581 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
582 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
583 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
584 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
585 3225, 3251, 3252, 3253, 3273
587 * For Linux, the sorting of addresses returned by getaddrinfo now also
588 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
589 Implemented by Ulrich Drepper.
591 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
592 Implemented by Ulrich Drepper.
594 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
596 * New iconv module for MIK. Contributed by Alexander Shopov.
598 * For sites with broken group and/or passwd database, the auto-propagate
599 option of nscd can prevent creating ID lookup entries from the results
600 of a name lookup and vice versa. This usually is no problem but some
601 site might have problems with the default behavior.
602 Implemented by Ulrich Drepper.
604 * Iterating over entire database in NIS can be slow. With the
605 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
606 to trade time for memory. The entire database will be read at once.
607 Implemented by Ulrich Drepper.
609 * The interfaces introduced in RFC 3542 have been implemented by
612 * Support for the new ELF hash table format was added by Ulrich Drepper.
614 * Support for priority inheritance mutexes added by Jakub Jelinek and
617 * Support for priority protected mutexes added by Jakub Jelinek.
619 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
620 or_IN, csb_PL, fy_NL, sr_ME.
624 * More overflow detection functions.
626 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
627 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
629 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
630 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
631 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
632 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
633 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
634 by Masahide Washizawa.
636 * It is now possible to install audit libraries for the dynamic linker using
637 LD_AUDIT. Implemented by Ulrich Drepper.
639 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
640 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
641 For a libc and libpthread that works well on Linux 2.4 kernels, we
642 recommend using the stable 2.3 branch.
644 * The new function open_wmemstream acts like open_memstream,
645 but uses a wchar_t wide character buffer.
647 * The new function ppoll is an improved version of poll, similar to pselect.
649 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
650 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
651 renameat, unlinkat, linkat, symlinkat, readlinkat.
653 * New Linux kernel system calls: unshare,
654 inotify_init, inotify_add_watch, inotify_rm_watch.
656 * The euidaccess function is now also known by the alias eaccess,
657 for compatibility with some other systems.
659 * Timezone data updated to 2006b version.
663 * The following bugs are resolved with this release:
665 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
666 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
667 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
668 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
669 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
670 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
672 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
674 * As of this release, GCC 4 can be used to compile the C Library.
676 * Timezone data updated to 2005m version.
680 * The following bugs are resolved with this release:
682 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
683 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
684 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
685 777, 787, 821, 822, 823, 825
687 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
691 * Support for RFC 3678. Real implementations exist only for Linux so far.
692 Implemented by Ulrich Drepper.
694 * nscd can now cache entries persistently. Expiring entries are reloaded.
695 For speedups the cache can be shared in memory with client processes.
696 Implemented by Ulrich Drepper.
698 * nscd can now perform SELinux checks.
699 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
701 * getaddrinfo queries are now cached. Canonical name lookup is performed
703 Implemented by Ulrich Drepper.
705 * The nothrow function attribute is used when headers are used by gcc when
706 compiling C code. This can avoid significant amounts of exception
709 * The malloc functions perform more error checking and are stricter when
710 it comes to reacting on errors. The default action is to terminate
711 the process after showing an error message. Implemented by Ulrich Drepper.
713 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
714 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
716 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
717 namespaces using the new function dlmopen(). This feature is of course,
718 like most other dynamic loading functionality, not available in statically
719 linked applications. Implemented by Ulrich Drepper.
721 * Low-overhead boundary checking variants of string and some stdio functions
722 were added. These are to be used in conjunction with a gcc patch by
723 Jakub Jelinek which adds calls to these functions if possible.
724 Implemented by Jakub Jelinek and Ulrich Drepper.
726 * Old code for several operating systems and machine architectures that
727 have not been in working condition in a long time have been removed from
728 the main source tree maintained by the GNU C Library's maintainers.
729 These files are now reside in the separate `ports' source module
730 that is usable as an add-on when building the library.
734 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
735 interrogate the dynamic linker, compatible with the Solaris interface.
737 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
738 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
740 * getifaddrs now uses the netlink interface on Linux to get its information.
741 Implemented by Thorsten Kukuk.
743 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
744 Implemented by Ulrich Drepper.
746 * support for non-executable stacks on x86 has been added. Changes mostly
749 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
752 * getaddrinfo now performs destination address selection according to
757 * Thread-safe interfaces for many functions that access locale data
758 were added in version 2.3, but these features were omitted from NEWS.
759 Many functions have variants with an `_l' suffix that take a `locale_t'
760 object as a parameter rather than consulting the current locale.
761 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
762 create and maintain `locale_t' objects. Additionally, the new function
763 `uselocale' sets "the current locale" (as used by functions not so
764 parameterized) set for an individual thread. These features were added
765 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
767 * The functions getresuid, getresgid, setresuid, and setresgid, which
768 have long been available on Linux, are now declared in <unistd.h>
769 and are now also available on the Hurd.
771 * ELF thread-local storage support (TLS) now works on x86-64.
773 * The new dynamic string token $LIB is expanded in shared library names.
774 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
776 * Aldy Hernandez contributed complete software floating point support for
777 PowerPC machines with no FPU.
779 * fexecve is implemented on Linux.
781 * The `btowc' function should work at least twice as fast due to
782 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
784 * With approriate thread add-ons cancelable functions are now implemented
785 in libc.so as well. No need to call the function in libpthread. This
786 change allowed to finally disable the incorrect and expensive handling
787 of weak definition in ld.so.
789 * Yet more PLT entries in libc.so have been removed. We finally arrived
790 at the bare minimum. Startup times improved appropriately.
792 * Support for the new Linux/x86 system call interface was added. The
793 AT_SYSINFO auxiliary vector entry is recognized and handled.
797 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
800 * iconv (the program and the interface) now accepts empty names (excluding
801 options like //TRANSLIT) to mean "use charset of current locale".
803 * localedef can now transliterate characters in strings which are not in
804 the provided charmap. The information from the input locale is used.
806 * Prelinking support was added for ELF targets. This requires additional
807 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
809 * Read-only stdio streams now use mmap to speed up operation by eliminating
810 copying and buffer underflows. To use add 'm' to the mode string of
811 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
813 * The malloc functions were completely rewritten by Wolfram Gloger based
814 on Doug Lea's malloc-2.7.0.c.
816 * Isamu Hasegawa contributed a completely new and POSIX-conformant
817 implementation of regex.
819 * Bruno Haible upgraded the iconv and locale implementation to support
822 * Contents of the LC_* and LANG environment variables in the CEN style are
823 not recognized anymore. It never was used. Change by Ulrich Drepper.
825 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
826 thread-local storage (TLS) ABI on some platforms.
827 Changes by Ulrich Drepper. SH support by Kaz Kojima.
829 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
830 EUC-JISX0213, and TSCII.
832 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
833 BSD-compatible interface for getting all network interface addresses.
834 Implementation for IPv4 by Roland McGrath.
836 * Loading of locale data is faster due to the introduction of a locale
837 archive. Implemented by Roland McGrath and Ulrich Drepper.
839 * Startup times are significantly reduced by not using exported functions
840 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
843 * Steven Munroe contributed a port to PowerPC64/Linux.
847 * The Hurd now uses the GNU libio implementation of stdio rather than the
848 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
850 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
851 with the same behavior as the Linux system call of the same name.
855 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
856 128-bit long double format.
858 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
859 IBM1161, and IBM1162 charsets.
861 * Andreas Jaeger contributed a port to x86-64/Linux.
863 * Peter Bruin contributed a port to PowerPC/Hurd.
865 * libc functions using I/O streams now can handle wide-oriented streams
868 * optimizations in the dynamic linker. Binaries created by recent binutils
869 versions start up quicker due to reduced time spent on relocations.
871 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
875 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
876 asinh, atanh, j0 for the 128-bit long double format.
878 * Bruno Haible updated all the code handling Unicode in some form to
881 * Speed of regex for single-byte locales is back to previous levels.
882 Patch by Isamu Hasegawa.
884 * Alpha, SPARC, and IA-64 now also using floating stacks.
886 * Startup time of internationalized applications greatly improved through
887 iconv cache. Use iconvconfig to generate the cache file.
888 Contributed by Ulrich Drepper.
890 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
891 severe performance problems. Patch by David Mosberger.
893 * The Hurd port got a lot more functionality like AIO, various stdio
894 extensions, etc. Mainly done by Roland McGrath.
896 * mtrace can now lookup symbols in shared libraries.
900 * Intel's IA-64 math library is largely integrated. It provides fast and
901 accurate implementatations for most basic and standard math functions
902 in float, double, and long double format.
904 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
905 and asin for the 96-bit long double format and asin, log, tan for the
906 128-bit long double format.
908 * The beginning of a last-bit accurate math library by IBM Haifa were added.
909 The basic double functions exist today. Contributed by Abraham Ziv
910 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
911 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
913 * An asynchronous name lookup library was added. The interface is designed
914 after POSIX AIO. The proposal was circulated beforehand to get comments.
915 No negative ones came in. Implemented by Ulrich Drepper.
917 * Port to S390/64bit contributed by Martin Schwidefsky
918 <schwidefsky@de.ibm.com>.
920 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
921 of functions for Linux/IA-64.
923 * The RPC code is now thread safe. Threads can now use the same service
924 of different services at the same time. Patch by Eric Norum
925 <eric.norum@usask.ca> with some help by Ulrich Drepper.
927 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
928 family of functions for Linux/S390.
930 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
931 of functions for Linux/x86.
933 * Port to Linux/CRIS contributed by Axis Communications.
937 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
938 we can now check for namespace violations and missing declarations. The
939 result is that almost all headers are now Unix-compliant (as defined in
940 the upcoming XPG6). The negative side is that some programs might need
941 corrections, too, if they depend on the incorrect form of the headers in
942 previous versions which defined too many symbols and included too many
945 * regex now handles multibyte character sets correctly.
946 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
948 * iconv (the program) does now conform to the upcoming XPG6 and handles
949 charmaps. Instead of the charset names the path of charmaps can be
950 provided and the conversion happens based on this data.
951 Contributed by Ulrich Drepper.
953 * The locale program now provides detailed information about the installed
958 only lists the names of the supported locales
962 provides details such as country, language, and codeset name.
963 Contributed by Ulrich Drepper.
967 * The gencat program now parses the input file according to the charset
968 selected by the LC_CTYPE category. This is important for stateful
969 character sets. To make generating catalogs easier there is a way
970 to overwrite the charset selected by the locale: before the first
971 message or $ quote line the catalog can contain a line like
975 to select the charset (ISO-8859-2 in this case).
977 Implemented by Shinya Hanataka and Ulrich Drepper.
979 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
980 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
981 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
983 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
984 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
986 * The LANGUAGE environment variable is now ignored unless the locale is
987 changed from the default "C" locale.
989 * The usual bug fixes.
993 * Greg McGary added runtime support for bounds checking using gcc's
994 new -fbounded-pointers option. ix86 target is complete. PowerPC
997 * Thorsten Kukuk added secure mode support to nscd.
999 * The Berkeley db libraries have been removed.
1001 Related, the nss_db module is now in a separate package since it
1002 obviously requires a database library being available.
1004 * Wide character I/O streams implemented by Ulrich Drepper.
1006 * Functions from the extended socket API added by Ulrich Drepper.
1008 * Functions feenableexcept and fedisableexcept to control the
1009 behaviour of individual exceptions have been added by Andreas Jaeger.
1011 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1013 * The resolver code has been updated from bind 8.2.3-T5B which supports
1014 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1017 This change could in some situations effect backward compatibility. Since
1018 now `_res' is a thread-local instead of a global variable, modifying it
1019 in one thread does not have any effect in other threads.
1021 The resolver library was also extended to allow IPv6 as the transport
1022 protocol for the requests. This work was done by Stig Venaas.
1024 * Compatibility code for K&R C compilers has been removed from the
1025 header files. A ISO C compiler is needed to use the library
1026 (conforming to either C89 or C99 standard).
1028 * Complete rewrite of the localedef program to support multibyte character
1029 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1030 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1031 Implemented by Ulrich Drepper.
1033 Bruno Haible significantly improved the generation and use of the data
1034 structures for the wide character tables.
1036 * Plural handling in gettext implemented by Ulrich Drepper.
1038 * The utmp daemon has been removed.
1040 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1042 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1045 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1047 * POSIX barriers implemented by Kaz Kylheku.
1049 * POSIX spawn function family implemented by Ulrich Drepper.
1051 * POSIX spinlocks are now available.
1053 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1055 * the configure option --enable-kernel=X.Y.Z allows to strip out
1056 compatibility for kernel versions before X.Y.Z. This is currently only
1057 implemented for Linux.
1059 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1060 field sin6_scope_id. This means that all programs using IPv6 should be
1061 recompiled. Don't expect binary compatibility with previous glibc
1064 * various conversion modules for IBM character sets contributed by
1067 * IA-64 port by Jes Sorensen and HJ Lu.
1081 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1083 * New xdr functions are added; some rpc functions are now 64bit clean.
1085 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1087 * Fixed known incompatibilities with glibc 2.0.
1089 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1091 * Optimized a number of functions (especially the ELF dynamic loader).
1093 * Update timezone data files.
1095 * lots of charmaps corrections
1097 * some new locale definitions and charmaps
1102 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1103 conform to POSIX member type requirements. Symbol versions have been
1104 adjusted as needed within the library, and for direct use by applications,
1105 but there is potential for problems if third-party libraries use
1106 struct timeval as part of their interface. This does not present
1107 a problem for X and other "essential" system libraries.
1109 * An additional locale model to support C++ Standard Library locale
1110 model and probably more was implemented by Ulrich Drepper.
1112 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1115 * Miles Bader provided the `argp' function family to support hierachical
1116 command line argument parsing, layered on top of getopt.
1118 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1120 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1123 * scanf recognizes the %a and %A format for scanning floating point numbers.
1125 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1126 information and interfaces for the available integer types.
1128 * about 130 new math functions were added to implement the ISO C9x math
1131 * the new header <complex.h> contains definitions of the complex math
1132 functions from ISO C 9X.
1134 * the new header <tgmath.h> defines generic macros to use complex or
1135 real valued functions.
1137 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1139 * Andreas Jaeger provided a test suite for the math library.
1141 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1143 * Ulrich Drepper added character set conversion functions (iconv).
1145 * Optimized string functions have been added.
1147 * The localedata addon is now part of glibc.
1149 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1151 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1152 daemon for NSS (nscd).
1154 Missing a better place here are some numbers on improvements. Under
1155 Linux 2.1.125 un-tar-ing the kernel sources takes
1159 using local files 12.19s 6.88s 22.91s
1161 using NIS 13.92s 8.91s 26.34s
1163 using NIS & nscd 10.37s 7.34s 25.30s
1165 using NIS+ 27.57s 30.37s 640.46s
1167 using NIS+ & nscd 10.25s 7.83s 26.51s
1169 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1171 Keep in mind that non-namelookup related operations dominate above times.
1172 It was just a common complain that using NIS+ unpacking the kernel is
1175 [1] The old nscd implementation is not available anymore since it was
1176 distributed with glibc up to version 2.0.98 and thus is now replaced.
1178 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1180 * Mark Kettenis provided a Hesiod NSS module.
1182 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1183 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1185 * rcmd can now handle netgroups (Dick Streefland).
1187 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1190 * Support for the IPv6 protocol has been added to the socket API, as per the
1191 latest draft standards.
1193 * Support for Linux 2.2 has been added.
1195 * Interface changes relative to the latest 2.0.x release:
1196 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1197 addseverity NEW: Unix98
1198 alphasort64 NEW: LFS
1199 argp_err_exit_status NEW: argp, GNU ext
1200 argp_error NEW: argp, GNU ext
1201 argp_failure NEW: argp, GNU ext
1202 argp_help NEW: argp, GNU ext
1203 argp_parse NEW: argp, GNU ext
1204 argp_program_bug_address NEW: argp, GNU ext
1205 argp_program_version NEW: argp, GNU ext
1206 argp_program_version_hook NEW: argp, GNU ext
1207 argp_state_help NEW: argp, GNU ext
1208 argp_usage NEW: argp, GNU ext
1209 authdes_create NEW: Secure RPC
1210 authdes_getucred NEW: Secure RPC
1211 authdes_pk_create NEW: Secure RPC
1212 backtrace NEW: GNU ext.
1213 backtrace_symbols NEW: GNU ext.
1214 backtrace_symbols_fd NEW: GNU ext.
1216 cacosf NEW: ISO C 9x
1217 cacosh NEW: ISO C 9x
1218 cacoshf NEW: ISO C 9x
1219 cacoshl NEW: ISO C 9x
1220 cacosl NEW: ISO C 9x
1227 casinf NEW: ISO C 9x
1228 casinh NEW: ISO C 9x
1229 casinhf NEW: ISO C 9x
1230 casinhl NEW: ISO C 9x
1231 casinl NEW: ISO C 9x
1233 catanf NEW: ISO C 9x
1234 catanh NEW: ISO C 9x
1235 catanhf NEW: ISO C 9x
1236 catanhl NEW: ISO C 9x
1237 catanl NEW: ISO C 9x
1238 cbc_crypt NEW: Secure RPC
1242 ccoshf NEW: ISO C 9x
1243 ccoshl NEW: ISO C 9x
1249 cimagf NEW: ISO C 9x
1250 cimagl NEW: ISO C 9x
1251 clearerr_locked REMOVED
1252 clntunix_create NEW: sunrpc ext
1254 clog10 NEW: ISO C 9x
1255 clog10f NEW: ISO C 9x
1256 clog10l NEW: ISO C 9x
1266 cprojf NEW: ISO C 9x
1267 cprojl NEW: ISO C 9x
1269 crealf NEW: ISO C 9x
1270 creall NEW: ISO C 9x
1275 csinhf NEW: ISO C 9x
1276 csinhl NEW: ISO C 9x
1279 csqrtf NEW: ISO C 9x
1280 csqrtl NEW: ISO C 9x
1284 ctanhf NEW: ISO C 9x
1285 ctanhl NEW: ISO C 9x
1287 des_setparity NEW: Secure RPC
1288 ecb_crypt NEW: Secure RPC
1289 endutxent NEW: Unix98
1291 exp10f NEW: ISO C 9x
1292 exp10l NEW: ISO C 9x
1296 fattach NEW: STREAMS
1297 fdetach NEW: STREAMS
1301 feclearexcept NEW: ISO C 9x
1302 fegetenv NEW: ISO C 9x
1303 fegetexceptflag NEW: ISO C 9x
1304 fegetround NEW: ISO C 9x
1305 feholdexcept NEW: ISO C 9x
1307 feraiseexcept NEW: ISO C 9x
1308 ferror_locked REMOVED
1309 fesetenv NEW: ISO C 9x
1310 fesetexceptflag NEW: ISO C 9x
1311 fesetround NEW: ISO C 9x
1312 fetestexcept NEW: ISO C 9x
1313 feupdateenv NEW: ISO C 9x
1314 fflush_locked REMOVED
1318 fgets_unlocked NEW: GNU ext.
1319 fileno_locked REMOVED
1331 fputc_locked REMOVED
1332 fputs_unlocked NEW: GNU ext.
1333 fread_unlocked NEW: GNU ext.
1338 fstatvfs NEW: Unix98
1342 ftruncate64 NEW: LFS
1344 fwrite_unlocked NEW: GNU ext.
1345 gai_strerror NEW: IPv6
1349 getchar_locked REMOVED
1351 getdate_err NEW: Unix98
1352 getdate_r NEW: GNU ext.
1354 getnameinfo NEW: IPv6
1355 getnetname NEW: Secure RPC
1356 getpmsg NEW: STREAMS
1357 getpt NEW: Unix98 PTY
1358 getrlimit64 NEW: LFS
1359 getutxent NEW: Unix98
1360 getutxid NEW: Unix98
1361 getutxline NEW: Unix98
1362 glob64 NEW: GNU ext.
1363 globfree64 NEW: GNU ext.
1364 gnu_get_libc_release NEW: GNU ext.
1365 gnu_get_libc_version NEW: GNU ext.
1366 grantpt NEW: Unix98 PTY
1367 host2netname NEW: Secure RPC
1369 iconv_close NEW: iconv
1370 iconv_open NEW: iconv
1371 if_freenameindex NEW: IPv6
1372 if_indextoname NEW: IPv6
1373 if_nameindex NEW: IPv6
1374 if_nametoindex NEW: IPv6
1375 in6addr_any NEW: IPv6
1376 in6addr_loopback NEW: IPv6
1377 inet6_isipv4mapped NEW: IPv6
1378 isastream NEW: STREAMS
1379 iswblank NEW: GNU ext.
1380 key_decryptsession NEW: Secure RPC
1381 key_decryptsession_pk NEW: Secure RPC
1382 key_encryptsession NEW: Secure RPC
1383 key_encryptsession_pk NEW: Secure RPC
1384 key_gendes NEW: Secure RPC
1385 key_get_conv NEW: Secure RPC
1386 key_secretkey_is_set NEW: Secure RPC
1387 key_setnet NEW: Secure RPC
1388 key_setsecret NEW: Secure RPC
1389 llrint NEW: ISO C 9x
1390 llrintf NEW: ISO C 9x
1391 llrintl NEW: ISO C 9x
1392 llround NEW: ISO C 9x
1393 llroundf NEW: ISO C 9x
1394 llroundl NEW: ISO C 9x
1399 lrintf NEW: ISO C 9x
1400 lrintl NEW: ISO C 9x
1401 lround NEW: ISO C 9x
1402 lroundf NEW: ISO C 9x
1403 lroundl NEW: ISO C 9x
1405 makecontext NEW: Unix98
1406 mempcpy NEW: GNU ext.
1409 modify_ldt NEW: kernel
1413 nearbyint NEW: ISO C 9x
1414 nearbyintf NEW: ISO C 9x
1415 nearbyintl NEW: ISO C 9x
1416 netname2host NEW: Secure RPC
1417 netname2user NEW: Secure RPC
1418 nexttoward NEW: ISO C 9x
1419 nexttowardf NEW: ISO C 9x
1420 nexttowardl NEW: ISO C 9x
1424 passwd2des NEW: Secure RPC
1426 pow10f NEW: GNU ext.
1427 pow10l NEW: GNU ext.
1430 printf_size NEW: GNU ext.
1431 printf_size_info NEW: GNU ext.
1432 profil_counter REMOVED
1433 pthread_mutexattr_getkind_np REPLACED
1434 pthread_mutexattr_setkind_np REPLACED
1435 ptsname NEW: Unix98 PTY
1436 ptsname_r NEW: Unix98 PTY
1438 putchar_locked REMOVED
1439 putgrent NEW: GNU ext.
1441 putpmsg NEW: STREAMS
1442 pututxline NEW: Unix98
1446 readdir64_r NEW: LFS
1447 remquo NEW: ISO C 9x
1448 remquof NEW: ISO C 9x
1449 remquol NEW: ISO C 9x
1451 roundf NEW: ISO C 9x
1452 roundl NEW: ISO C 9x
1454 scalbln NEW: ISO C 9x
1455 scalblnf NEW: ISO C 9x
1456 scalblnl NEW: ISO C 9x
1458 sendfile NEW: kernel
1459 setcontext NEW: Unix98
1460 setrlimit64 NEW: LFS
1461 setutxent NEW: Unix98
1463 sigignore NEW: Unix98
1464 sigqueue NEW: POSIX.1b
1465 sigrelse NEW: Unix98
1466 sigset NEW: POSIX.1b
1467 sigtimedwait NEW: POSIX.1b
1468 sigwaitinfo NEW: POSIX.1b
1469 sincos NEW: GNU ext.
1470 sincosf NEW: GNU ext.
1471 sincosl NEW: GNU ext.
1475 strcasestr NEW: GNU ext.
1476 strtoimax NEW: ISO C 9x
1477 strtoumax NEW: ISO C 9x
1478 strverscmp NEW: GNU ext.
1479 svcauthdes_stats NEW: Secure RPC
1480 svcunix_create NEW: sunrpc etx
1481 svcunixfd_create NEW: sunrpc ext
1482 swapcontext NEW: Unix98
1483 tcgetsid NEW: Unix98 PTY
1484 tdestroy NEW: GNU ext.
1485 tgamma NEW: ISO C 9x
1486 tgammaf NEW: ISO C 9x
1487 tgammal NEW: ISO C 9x
1491 truncf NEW: ISO C 9x
1492 truncl NEW: ISO C 9x
1494 unlockpt NEW: Unix98 PTY
1495 updwtmpx NEW: Unix98
1496 user2netname NEW: Secure RPC
1497 utmpxname NEW: Unix98
1498 versionsort NEW: GNU ext.
1499 versionsort64 NEW: GNU ext.
1501 wcscasecmp NEW: GNU ext.
1502 wcsncasecmp NEW: GNU ext.
1503 wcsnlen NEW: GNU ext.
1504 wcstoimax NEW: ISO C 9x
1505 wcstoll NEW: ISO C 9x
1506 wcstoull NEW: ISO C 9x
1507 wcstoumax NEW: ISO C 9x
1509 wordexp NEW: POSIX.2
1510 wordfree NEW: POSIX.2
1511 write_profiling REMOVED
1512 xdecrypt NEW: Secure RPC
1513 xdr_authdes_cred NEW: Secure RPC
1514 xdr_authdes_verf NEW: Secure RPC
1515 xdr_cryptkeyarg NEW: Secure RPC
1516 xdr_cryptkeyarg2 NEW: Secure RPC
1517 xdr_cryptkeyres NEW: Secure RPC
1518 xdr_getcredres NEW: Secure RPC
1519 xdr_key_netstarg NEW: Secure RPC
1520 xdr_key_netstres NEW: Secure RPC
1521 xdr_keybuf NEW: Secure RPC
1522 xdr_keystatus NEW: Secure RPC
1523 xdr_netnamestr NEW: Secure RPC
1524 xdr_sizeof NEW: Secure RPC
1525 xdr_unixcred NEW: sunrpc ext
1526 xencrypt NEW: Secure RPC
1527 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1538 * inet_ntoa is thread-safe
1540 * updwtmp is moved from libutil to libc
1542 * rewrite of cbrt function
1544 * update of timezone data
1558 * add atoll function
1560 * fix complex problems in Berkeley DB code
1562 * fix math functions
1566 * fixed lots of header problems (especially Linux/GNU specific)
1568 * dynamic loader preserves all registers
1570 * Roland McGrath provided support for handling of auxiliary objects in
1571 the ELF dynamic loader.
1573 * support for parallel builds is improved
1577 * GNU extensions are no longer declared by default. To enable them you
1578 must define the macro `_GNU_SOURCE' in your program or compile with
1581 * The library has changed from using GNU ld symbol aliases to using weak
1582 symbols where available. The ELF object file format supports weak
1583 symbols; GNU ld also supports weak symbols in the a.out format. (There
1584 is also now support for other GNU ld extensions in ELF. Use the
1585 `--with-elf' option to configure to indicate you have ELF, and
1586 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1587 of many files which contained only symbol aliases, reducing the size of
1588 the source and the compiled library; many other files were renamed to
1589 less cryptic names previously occupied by the symbol alias files.
1590 There is a new header file <elf.h> for programs which operate on
1591 files in the ELF format.
1593 * Converted to Autoconf version 2, so `configure' has more options.
1594 Run `configure --help' to see the details.
1596 * The library can now be configured to build profiling, highly-optimized
1597 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1598 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1599 `configure' enable building these extra libraries. The shared library is
1600 built by default when using both ELF and GNU ld. When shared libraries
1601 are enabled, the new library `-ldl' is available for arbitrary run-time
1602 loading of shared objects; its interface is defined in <dlfcn.h>. The
1603 new header file <link.h> gives access to the internals of the run-time
1604 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1605 application of same name on other systems and it provides information
1606 about dynamically linked binaries.
1608 * The C library now provides the run-time support code for profiling
1609 executables compiled with `-pg'. Programs can control the profiling code
1610 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1611 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1612 the support for this file format was contributed by David Mosberger-Tang.
1614 * The math code has been replaced with a math library based on fdlibm from
1615 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1616 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1617 functions. The math functions now reside in a separate library, so
1618 programs using them will need to use `-lm' their linking commands.
1620 * John C. Bowman contributed optimized ix87 assembler inline functions.
1622 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1623 mechanism similar to that found in Solaris 2. This is now used for the
1624 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1625 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1626 file controls what services are used for each individual database. This
1627 works by loading shared libraries with names specified in `nsswitch.conf',
1628 so service modules can be changed or added at any time without even
1629 relinking any program. Currently there are the file, db, and NIS based
1630 NSS services available.
1632 * The new functions `strtoq' and `strtouq' parse integer values from
1633 strings, like `strtol' and `strtoul', but they return `long long int' and
1634 `unsigned long long int' values, respectively (64-bit quantities).
1636 * The new functions `strtof' and `strtold' parse floating-point values from
1637 strings, like `strtod', but they return `float' and `long double' values,
1638 respectively (on some machines `double' and `long double' are the same).
1640 * Ulrich Drepper has contributed new implementations of the floating-point
1641 printing and reading code used in the `printf' family of functions and
1642 `strtod', `strtof', and `strtold'. These new functions are perfectly
1643 accurate, and much faster than the old ones.
1645 * The implementation of the POSIX locale model was completely rewritten by
1646 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1647 to compile the POSIX locale definition.
1649 * The former dummy implementations of the strcoll and strxfrm function are
1650 now replaced by fully functional code contributed by Ulrich Drepper. The
1651 collation information comes from the POSIX locale definitions.
1653 * The new header <langinfo.h> defines an interface for accessing
1654 various locale-dependent data (using the locale chosen with `setlocale').
1656 * Ulrich Drepper has contributed a new suite of functions for operation on
1657 wide-character and multibyte-character strings, in <wchar.h>;
1658 and classification and case conversion of wide characters, in <wctype.h>.
1659 These new functions are conforming to the ISO C, Amendement 1 specification.
1661 * There is now a second implementation of the standard I/O library available.
1662 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1663 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1665 * You can now use positional parameter specifications in format strings
1666 for the `printf' and `scanf' families of functions. For example,
1667 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1668 ``Number 6, Mr Jones''. This is mainly useful when providing different
1669 format strings for different languages, whose grammars may dictate
1670 different orderings of the values being printed. To support this
1671 feature, the interface for `register_printf_handler' has changed; see
1672 the header file <printf.h> for details.
1674 * The `printf' and `scanf' families of functions now understand a new
1675 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1676 to group numbers as indicated by the locale; for `scanf' and friends, this
1677 says to accept as valid only a number with all the proper grouping
1678 separators in the right places. In the default "C" locale, numbers are
1679 not grouped; but locales for specific countries will define the usual
1680 conventions (i.e. separate thousands with `,' in the US locale).
1682 * The pgrp functions have been regularized, slightly incompatibly but much
1683 less confusingly. The core functions are now `getpgid' and `setpgid',
1684 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1685 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1686 provided for compatibility. There is no longer an incompatible `getpgrp'
1687 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1689 * The new header file <fts.h> and suite of functions simplify programs that
1690 operate on directory trees. This code comes from 4.4 BSD.
1692 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1693 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1694 NSS scheme used in glibc.
1696 * There is a new malloc debugging hook `__memalign_hook'.
1698 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1699 `unsigned int' in <sys/types.h>. These are for compatibility only and
1700 their use is discouraged.
1702 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1703 done differently, so that it works even without GNU ld.
1705 * New function `euidaccess' checks allowed access to a file like `access',
1706 but using the effective IDs instead of the real IDs.
1708 * The time zone data files have been updated for the latest and greatest
1709 local time conventions of the countries of the world.
1711 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1714 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1715 for formatting floating-point numbers. They are provided only for
1716 compatibility; new programs should use `sprintf' instead. There are
1717 also equivalent function for the `long double' floating-point type and
1718 all functions also exist in a reentrant form.
1720 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1721 functions for maintaining the login-record files (primarily of use to
1722 system programs such as `login'), and convenient functions for
1723 allocating and initializing a pseudo-terminal (pty) device.
1725 * Ulrich Drepper has contributed new support for System V style
1726 shared memory and IPC on systems that support it.
1728 * Ulrich Drepper has contributed several miscellaneous new functions found
1729 in System V: The `hsearch' family of functions provide an effective
1730 implementation of hash tables; `a64l' and `l64a' provide a very simple
1731 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1734 * Ulrich Drepper has contributed new reentrant counterparts for the
1735 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1737 * Ulrich Drepper has contributed new, highly-optimized versions of several
1738 string functions for the i486/Pentium family of processors.
1740 * Ulrich Drepper has updated the Linux-specific code, based largely
1741 on work done in Hongjiu Lu's version of GNU libc for Linux.
1742 The GNU library now supports Linux versions 2.0.10 and later,
1743 using the ELF object file format (i[3456]86-*-linux).
1745 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1747 * David Mosberger-Tang and Richard Henderson have ported the C library
1748 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1749 dynamic linking support for ELF/Alpha.
1751 * Richard Henderson contributed several Alpha optimized assembler function
1752 for arithmetic and string handling.
1754 * Ulrich Drepper has contributed a new set of message catalog functions to
1755 support multiple languages using the <libintl.h> interface, for use with
1756 his new package GNU gettext. Translation volunteers have contributed
1757 catalogs of the library's messages in Spanish, German, and Korean.
1759 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1760 program and the `catgets' function for reading the catalog files it
1761 creates. (The <libintl.h> interface is preferred; we include the
1762 <nl_types.h> interface using `catgets' only for source compatibility with
1763 programs already written to use it.)
1765 * New header file <values.h> gives SVID-compatible names for <limits.h>
1768 * Various new macros, declarations, and small header files for compatibility
1771 * New function `group_member' is a convenient way to check if a process has
1772 a given effective group ID.
1774 * When using GCC 2.7 and later, the socket functions are now declared in a
1775 special way so that passing an argument of type `struct sockaddr_in *',
1776 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1777 `struct sockaddr *' type, does not generate a type-clash warning.
1779 * New function `error' declared in header file <error.h> is a convenient
1780 function for printing error messages and optionally exiting; this is the
1781 canonical function used in GNU programs. The new functions `err', `warn',
1782 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1783 doing the same thing.
1785 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1786 POSIX.2 `glob' function to do ~ and {...} expansion.
1788 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1789 `clearenv' which is used in POSIX.9 is also available.
1791 * New function `getsid' returns session ID number on systems that support it.
1793 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1794 files <db.h> and <mpool.h> provide a rich set of functions for several
1795 types of simple databases stored in memory and in files, and <ndbm.h> is
1796 an old `ndbm'-compatible interface using the `db' functions. Link with
1797 `-ldb' to get these functions.
1799 * New macro `strdupa' copies a string like `strdup', but uses local stack
1800 space from `alloca' instead of dynamic heap space from `malloc'.
1802 * New function `strnlen' is like `strlen' but searches only a given maximum
1803 number of characters for the null terminator. `stpncpy', `strndup' and
1804 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1807 * New function `statfs' in header <sys/statfs.h>.
1809 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1810 provide convenient functions for operating on blocks of null-terminated
1813 * A new suite of functions in <utmp.h> handle all the details of reading
1814 and writing the utmp file.
1816 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1819 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1820 completely POSIX compliant and also implemented the extended functionality
1821 to handle alternate digit representation and alternate era date formats.
1823 * Ulrich Drepper provided an implementation of the `strptime' function
1824 defined in XPG4.2 which transforms a string into a `struct tm' value.
1826 * Paul Eggert provided the tzselect shell script as part of the timezone
1827 code. The shell script makes it easy to select the correct timezone
1830 * The implementation of the malloc family of functions is completely replaced
1831 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1832 The implementation uses the mmap function (if available) and it is
1833 optimized for the use in multi threaded programs.
1835 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1836 functions. This new functionality is usable by specifying a special
1837 salt string and it is compatible with implementation on *BSD systems.
1839 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1840 `getsubopt' to handle second level command line options, `bsd_signal'
1841 to access BSD style `signal' functionality, the obsolete `regexp' style
1844 * the `lchown' function is available on system which support this
1847 * The implementation of the shadow password handling function was contributed
1850 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1852 * POSIX.1g support was added. The <sys/select.h> header is available,
1853 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1854 implementation of `getaddrinfo'.
1858 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1860 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1861 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1863 * The new function `daemon' from 4.4 BSD is useful for server programs that
1864 want to put themselves in the background.
1866 * Joel Sherrill has contributed support for several standalone boards that
1867 run without an operating system.
1869 * `printf', `scanf' and friends now accept a `q' type modifier for long
1870 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1872 * All of the code taken from BSD (notably most of the math and networking
1873 routines) has been updated from the BSD 4.4-Lite release.
1875 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1877 * The new functions `getdomainname' and `setdomainname' fetch or change the
1878 YP/NIS domain name. These are system calls which exist on systems which
1881 * The time zone data files have been updated for the latest international
1884 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1885 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1889 * The C library now includes support for Sun RPC, from Sun's free
1890 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1891 are included. (There is still no support for YP.)
1893 * Tom Quinn has contributed a port of the C library to SGI machines running
1894 Irix 4 (mips-sgi-irix4).
1896 * The new `lockf' function is a simplified interface to the locking
1897 facilities of `fcntl', included for compatibility.
1899 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1901 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1903 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1906 * The error message printed by `assert' for a failed assertion now includes
1907 the name of the program (if using GNU ld) and the name of the calling
1908 function (with versions of GCC that support this).
1910 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1912 * The library now includes the <sys/mman.h> header file and memory
1913 management functions `mmap', `munmap', `mprotect', `msync', and
1914 `madvise', on systems that support those facilities.
1916 * The interface for `mcheck' has changed slightly: the function called to
1917 abort the program when an allocation inconsistency is detected now takes
1918 an argument that indicates the type of failure. The new function
1919 `mprobe' lets you request a consistency check for a particular block at
1920 any time (checks are normally done only when you call `free' or `realloc'
1923 * It is now possible to easily cross-compile the C library, building on one
1924 system a library to run on another machine and/or operating system. All
1925 you need to do is set the variable `HOST_CC' in `configparms' to the
1926 native compiler for programs to run on the machine you are building on (a
1927 few generator programs are used on Unix systems); set `CC' to the
1930 * The new function `fexecve' (only implemented on the GNU system) executes
1931 a program file given a file descriptor already open on the file.
1935 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1936 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1938 * You can set the variable `libprefix' in `configparms' to specify a prefix
1939 to be prepended to installed library files; this makes it easy to install
1940 the GNU C library to be linked as `-lgnuc' or whatever.
1942 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1943 copies a limited number of characters from a string, and returns the
1944 address of the last character written.
1946 * You no longer need to check for whether the installed `stddef.h' is
1947 compatible with the GNU C library. configure now checks for you.
1949 * You can now define a per-stream `fileno' function to convert the
1950 stream's cookie into an integral file descriptor.
1952 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1953 allocates zero bytes of storage, and returns a unique pointer which
1954 you can pass to `realloc' or `free'. The behavior is undefined if
1955 you dereference this pointer.
1957 * The C library now runs on Sony NEWS m68k machines running either
1958 NewsOS 3 or NewsOS 4.
1960 * The new `syscall' function is a system-dependent primitive function
1961 for invoking system calls. It has the canonical behavior on Unix
1962 systems, including unreliable return values for some calls (such as
1963 `pipe', `fork' and `getppid').
1965 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1966 to `EAGAIN', which is the preferred name. On systems whose kernels
1967 use two distinct codes, the C library now translates EWOULDBLOCK to
1968 EAGAIN in every system call function.
1972 * The GNU C Library Reference Manual is now distributed with the library.
1973 `make dvi' will produce a DVI file of the printed manual.
1974 `make info' will produce Info files that you can read on line using C-h i
1975 in Emacs or the `info' program.
1976 Please send comments on the manual to bug-glibc-manual@gnu.org.
1978 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1980 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1982 * Jason Merrill has contributed a port to the Sequent Symmetry running
1983 Dynix version 3 (i386-sequent-dynix).
1985 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1986 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1988 * New function `memory_warnings' lets you arrange to get warnings when
1989 malloc is running out of memory to allocate, like Emacs gives you.
1991 * The C library now contains the relocating allocator used in Emacs 19 for
1992 its editing buffers. This allocator (ralloc) minimizes allocation
1993 overhead and fragmentation by moving allocated regions around whenever it
1994 needs to. You always refer to a ralloc'd region with a "handle" (a
1995 pointer to a pointer--an object of type `void **').
1997 * There is a new `printf' format: `%m' gives you the string corresponding
1998 to the error code in `errno'.
2000 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2001 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2002 pass, the `a' modifier says to fill in a `char **' you pass with a
2005 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2006 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2007 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2009 * `mkstemp' is a traditional Unix function to atomically create and open a
2010 uniquely-named temporary file.
2014 * The standard location for the file that says what the local timezone is
2015 has changed again. It is now `/usr/local/etc/localtime' (or more
2016 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2018 * The distribution no longer contains any files with names longer than 14
2021 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2022 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2024 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2028 * The configuration process has changed quite a bit. The `configure'
2029 script is now used just like the configuration scripts for other GNU
2030 packages. The `sysdeps' directory hierarchy is much rearranged.
2031 The file `INSTALL' explains the new scheme in detail.
2033 * The header files no longer need to be processed into ANSI C and
2034 traditional C versions. There is just one set of files to install, and
2035 it will work with ANSI or old C compilers (including `gcc -traditional').
2037 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2038 MIPS DECStation running Ultrix 4.
2040 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2041 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2042 made itself into a shared library.
2044 * Yet further improved support for the i386, running 4.3 BSD-like systems
2045 (such as Mach 3 with the Unix single-server), or System V.
2047 * New function `strncasecmp' to do case-insensitive string comparison
2048 with limited length.
2050 * New function `strsep' is a reentrant alternative to `strtok'.
2052 * New functions `scandir' and `alphasort' for searching directories.
2054 * New function `setenv' is a better interface to `putenv'.
2056 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2057 function for traversing a directory tree.
2059 * The GNU obstack package is now also part of the C library.
2060 The new function `open_obstack_stream' creates a stdio stream that
2061 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2062 formatted output directly to an obstack.
2064 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2065 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2067 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2069 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2070 things to your strings.
2072 * There are some new test programs: test-fseek, testmb, and testrand.
2074 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2075 These ports are not finished, but are a good starting place for really
2076 supporting those systems.
2078 * `/etc/localtime' is now the standard location for the file that says what
2079 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2080 This follows the general principle that `/etc' is the place for all local
2081 configuration files.
2083 * The C library header files now use `extern "C"' when used by the C++
2084 compiler, so the C library should now work with C++ code.
2086 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2087 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2090 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2091 function which uses the `merge sort' algorithm, and is said to be
2092 significantly faster than the old GNU `qsort' function. Merge sort is
2093 now the standard `qsort' function. The new algorithm can require a lot
2094 of temporary storage; so, the old sorting function is called when the
2095 required storage is not available.
2097 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2098 provides the Unix `crypt' function, plus some other entry points.
2100 * The code and header files taken from 4.4 BSD have been updated with the
2101 latest files released from Berkeley.
2103 ----------------------------------------------------------------------
2104 Copyright information:
2106 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2108 Permission is granted to anyone to make or distribute verbatim copies
2109 of this document as received, in any medium, provided that the
2110 copyright notice and this permission notice are preserved,
2111 thus giving the recipient permission to redistribute in turn.
2113 Permission is granted to distribute modified versions
2114 of this document, or of portions of it,
2115 under the above conditions, provided also that they
2116 carry prominent notices stating who last changed them.
2119 version-control: never
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