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,
15 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
16 Optimized versions of memcpy, memset, and memcmp added for System z10 and
18 Implemented by Andreas Krebbel.
23 * The following bugs are resolved with this release:
25 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
26 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
27 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
28 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
29 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
30 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
31 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
32 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
33 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
34 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
35 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
36 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
37 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
38 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
39 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
40 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
41 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
42 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
43 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
44 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
45 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
46 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
49 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
50 configuring glibc with:
51 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
52 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
53 Implemented by H.J. Lu.
57 + define static_assert
61 + declare at_quick_exit and quick_exit also for ISO C11
63 + aligned_alloc. NB: The code is deliberately allows the size parameter
64 to not be a multiple of the alignment. This is a moronic requirement
65 in the standard but it is only a requirement on the caller, not the
70 + uchar.h support added
72 + CMPLX, CMPLXF, CMPLXL added
74 Implemented by Ulrich Drepper.
76 * Support for the IA-64 has been moved to ports.
78 * Remove support for anything but ELF binary format
80 * Checking versions of poll, ppoll added.
81 Implemented by Ulrich Drepper.
83 * More generic and 64-bit performance optimizations to math functions.
84 Implemented by Ulrich Drepper.
86 * New configure option --enable-obsolete-rpc makes the deprecated RPC
87 headers and functions available at compile time as they were before
88 version 2.14. This option will be removed at some time in the future
89 after the TI-RPC library becomes fully sufficient for the needs of
90 existing applications.
92 * Compatibility code for Linux kernel versions before 2.4 has been removed.
93 Note that glibc is not expected to work with any Linux kernel version
96 * New header <sys/auxv.h> and function getauxval allowing easy access to
97 the AT_* key-value pairs passed from the Linux kernel. The header also
98 defines the HWCAP_* bits associated with the AT_HWCAP key.
100 * New locales: mag_IN
102 * New configure option --enable-systemtap builds SystemTap static probes
103 into libc for setjmp and longjmp and into libpthread for various operations.
104 So far the setjmp/longjmp probes and some of the libpthread probes are
105 provided only for i*86 and x86_64.
106 Implemented by Roland McGrath and Rayson Ho.
108 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
110 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
113 * More optimized functions for SPARC. Implemented by David S. Miller.
115 * Improved support for cross-compilation, especially bootstrap builds
116 without a previously built glibc.
118 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
119 Chris Metcalf from Tilera.
121 * Support for the old ARM ABI has been removed from ports. Only the EABI is
122 now supported for ARM processors.
124 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
125 as the name of the dynamic linker, to distinguish it from the
126 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
128 * Support for CRIS has been removed from ports.
130 * A new class of installed header has been documented for low-level
131 platform-specific functionality. PowerPC added the first instance with a
132 function to provide time base register access. Contributed by Tulio
133 Magno Quites Machado Filho.
135 * ix86 configurations now install header files that are consistent with
136 what x86-64 configurations install. These same header files can be used
137 for -m32, -m64, or -mx32 builds.
138 Contributed by H.J. Lu.
140 * Math library bug fixes. A thorough audit of all open math library bugs was
141 conducted by Joseph Myers. Significant progress was made on many math
142 library bugs resulting in more accurate exceptions and function results.
143 Many thanks to all those that contributed including Andreas Jaeger for his
144 patch review and work on the x87 trigonometric instruction issues.
146 * Timezone data is no longer installed. Timezone-related binaries and scripts
147 will continue to be installed. Users should obtain their timezone data from
148 their distribution provider or from the tzdata package at
149 <ftp://munnari.oz.au/pub/>.
153 * The following bugs are resolved with this release:
155 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
156 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
157 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
158 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
159 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
160 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
161 13484, 13506, 13515, 13523, 13524, 13538, 13540
163 * New program pldd to list loaded object of a process
164 Implemented by Ulrich Drepper.
166 * Add nss_db support back to glibc. No more dependency on Berkeley db
167 and support for initgroups lookups.
168 Implemented by Ulrich Drepper.
170 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
171 Contributed by HJ Lu.
173 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
174 Contributed by HJ Lu.
176 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
177 on x86-32 and x86-64.
178 Contributed by Liubov Dmitrieva.
180 * Optimized strchr and strrchr for SSE on x86-32.
181 Contributed by Liubov Dmitrieva.
183 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
184 for x86-64 and x86-32.
185 Contributed by Liubov Dmitrieva.
187 * New interfaces: scandirat, scandirat64
188 Implemented by Ulrich Drepper.
190 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
191 Implemented by Ulrich Drepper.
193 * nscd now also caches the netgroup database.
194 Implemented by Ulrich Drepper.
196 * Integrate libm with gcc's -ffinite-math-only option.
197 Implemented by Ulrich Drepper.
199 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
200 to math functions. Implemented by Ulrich Drepper.
202 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
203 Implemented by Ulrich Drepper.
205 * New Linux interfaces: process_vm_readv, process_vm_writev
207 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
208 Implemented by Ulrich Drepper.
210 * Optimized nearbyint and strcasecmp for PPC.
211 Implemented by Adhemerval Zanella.
213 * New locales: bho_IN, unm_US, es_CU, ta_LK
217 * The following bugs are resolved with this release:
219 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
220 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
221 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
222 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
223 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
224 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
225 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
226 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
227 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
228 12795, 12811, 12813, 12814, 12841
230 * The RPC implementation in libc is obsoleted. Old programs keep working
231 but new programs cannot be linked with the routines in libc anymore.
232 Programs in need of RPC functionality must be linked against TI-RPC.
233 The TI-RPC implementation is IPv6 enabled and there are other benefits.
235 Visible changes of this change include (obviously) the inability to link
236 programs using RPC functions without referencing the TI-RPC library and the
237 removal of the RPC headers from the glibc headers.
238 Implemented by Ulrich Drepper.
240 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
241 syncfs, setns, sendmmsg
243 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
244 yue_HK, lij_IT, mhr_RU
246 * New encodings: CP770, CP771, CP772, CP773, CP774
248 * New program sotruss to trace calls through PLTs
249 Implemented by Ulrich Drepper.
251 * The malloc hook implementation is marked deprecated and will be removed
252 from the default implementation in the next version. The design never
253 worked ever since the introduction of threads. Even programs which do
254 not create threads themselves can use multiple threads created internally.
258 * The following bugs are resolved with this release:
260 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
261 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
262 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
263 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
266 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
268 * POWER7 optimizations: memset, memcmp, strncmp
270 * New optimized string functions for x86-64: strnlen (SSE2),
271 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
272 Implemented by Ulrich Drepper.
276 * The following bugs are resolved with this release:
278 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
279 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
280 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
281 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
282 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
283 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
284 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
285 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
287 * New interfaces: pthread_getname_np, pthread_setname_np
289 * New Linux interface: recvmmsg
291 * STT_GNU_IFUNC implemented for Sparc by David Miller.
293 * The dynamic linker now recognizes supported ABI versions from the
294 EI_ABIVERSION field in the ELF header.
295 Implemented by Ulrich Drepper.
297 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
298 will not be used to fill in password fields in the passwd.byname replies.
299 Instead it is used to synthesize the shadow.byname table, should it be
300 missing. This is a useful mode in some installations involving Solaris.
301 Implemented by Ulrich Drepper.
303 * New locales: kok_IN, sq_MK, cv_RU
307 * The following bugs are resolved with this release:
309 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
310 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
311 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
312 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
313 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
314 10789, 10817, 10823, 10840, 10847
316 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
318 Implemented by Ulrich Drepper.
320 * Checking version of longjmp added that fails if an uninitialized stack
321 frame would be created. Implemented by Ulrich Drepper.
323 * STT_GNU_IFUNC is now supported in static executables.
324 Implemented by H.J. Lu.
326 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
328 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
329 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
330 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
331 Contributed by H.J. Lu.
333 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
334 Implemented by Ulrich Drepper.
336 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
338 Contributed by H.J. Lu.
340 * Support for fma instruction in AVX on x86-64.
341 Implemented by H.J. Lu and Ulrich Drepper.
343 * AVX support in x86-64 auditing support in ld.so.
344 Implemented by H.J. Lu.
346 * STB_GNU_UNIQUE support added.
347 Implemented by Ulrich Drepper.
349 * Implement second fallback mode for optimized DNS lookup for even more
350 broken environments. If two requests from the same port are not
351 handled correctly close the socket and open a new one before sending
352 the second request. The 'single-request-reopen' option in /etc/resolv.conf
353 can be used to select this mode right away, instead of rediscovering the
354 necessity is every process again.
355 Implemented by Ulrich Drepper.
357 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
358 Implemented by Adam Tkac.
360 * Optimized iconv conversions for S390x.
361 Implemented by Andreas Krebbel.
363 * Using condvars with PI mutexes is now more efficient due to kernel
364 support for requeueing to PI futexes. NPTL support added for x86-64.
365 Implemented by Ulrich Drepper.
367 * New locales: ps_AF, my_MM
371 * The following bugs are resolved with this release:
373 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
374 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
375 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
376 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
377 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
379 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
380 Implemented by Ulrich Drepper.
382 * New Linux interfaces: accept4, fallocate, fallocate64.
383 Implemented by Ulrich Drepper.
385 * Correct declarations of string function when used in C++ code. This
386 could lead to compile errors for invalid C++ code.
388 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
391 * New POSIX 2008 interface: psiginfo
392 Implemented by Ulrich Drepper.
394 * New ISO C++1x interfaces: quick_exit, at_quick_exit
395 Implemented by Ulrich Drepper.
397 * Support for selecting between multiple function definitions at runtime
398 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
400 * The libcrypt library can now use the hash function implementations in
401 NSS. Implemented by Ulrich Drepper.
403 * The malloc implementation can be compiled to be less memory efficient
404 but higher performing in multi-threaded programs.
405 Implemented by Ulrich Drepper.
407 * New locales: nan_TW@latin, ks_IN
409 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
410 Implemented by Ulrich Drepper.
412 * Extended printf hook support. It is possible to use user-defined types
413 and extend existing format specifiers.
414 Implemented by Ulrich Drepper.
416 * Handling for group shadow files has been added.
417 Implemented by Ulrich Drepper.
419 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
420 servers (the case, e.g., for some people using the built-in DNS
421 server in ADSL modems/routers). There is a once-per-process timeout
422 in case of a broken server. To avoid it, users can run nscd or put
423 'options single-request' in /etc/resolv.conf.
424 Implemented by Ulrich Drepper.
428 * The following bugs are resolved with this release:
430 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
431 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
432 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
433 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
434 6968, 6974, 6980, 6995, 7008, 7009, 7029
436 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
437 up at the same time. Implemented by Ulrich Drepper.
439 * TLS descriptors for LD and GD on x86 and x86-64.
440 Implemented by Alexandre Oliva.
442 * getaddrinfo now handles DCCP and UDPlite.
443 Implemented by Ulrich Drepper.
445 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
446 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
447 Implemented by Ulrich Drepper.
449 * New implementation of memmem, strstr, and strcasestr which is O(n).
450 Implemented by Eric Blake.
452 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
454 * Implement "e" option for popen to open file descriptor with the
455 close-on-exec flag set. Implemented by Ulrich Drepper.
457 * Implement "b" mode for fmemopen. In this mode writes writes don't
458 implicitly add a NUL byte and seeks from the end of the buffer really
459 use the buffer end, not the string length as the basis.
460 Implemented by Ulrich Drepper.
462 * Many functions, exported and internal, now atomically set the close-on-exec
463 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
465 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
467 Implemented by Pravin Satpute.
469 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
473 * The following bugs are resolved with this release:
475 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
476 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
477 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
478 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
479 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
480 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
481 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
483 * New locales: bo_CN, bo_IN, shs_CA.
485 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
487 * Sorting rules for some Indian languages (Devanagari and Gujarati).
488 Implemented by Pravin Satpute.
490 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
492 * nscd caches now all timeouts for DNS entries
493 Implemented by Ulrich Drepper.
495 * nscd is more efficient and wakes up less often.
496 Implemented by Ulrich Drepper.
498 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
499 vdprintf, and obstack_vprintf.
500 Implemented by Jakub Jelinek.
502 * Faster memset for x86-64.
503 Implemented by Harsha Jagasia and H.J. Lu.
505 * Faster memcpy on x86.
506 Implemented by Ulrich Drepper.
508 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
509 Implemented by Ulrich Drepper.
511 * Faster sqrt and sqrtf implemention for some PPC variants.
512 Implemented by Steven Munroe.
516 * The following bugs are resolved with this release:
518 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
519 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
520 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
521 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
522 5071, 5103, 5104, 5112, 5113, 5184, 5186
524 * More checking functions: fread, fread_unlocked, open*, mq_open.
525 Implemented by Jakub Jelinek and Ulrich Drepper.
527 * Extend fortification to C++. Implemented by Jakub Jelinek.
529 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
530 by not recognizing 'a' as a modifier when those specs are requested.
531 Implemented by Jakub Jelinek.
533 * PPC optimizations to math and string functions.
534 Implemented by Steven Munroe.
536 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
537 options to be passed. Implemented by Ulrich Drepper.
539 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
541 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
542 Implemented by Ulrich Drepper.
544 * Handle private futexes in the NPTL implementation.
545 Implemented by Jakub Jelinek and Ulrich Drepper.
547 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
548 Implemented by Roland McGrath and Ulrich Drepper.
550 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
552 * SHA-256 and SHA-512 based password encryption.
553 Implemented by Ulrich Drepper.
555 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
556 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
559 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
560 Implemented by Ulrich Drepper.
564 * The following bugs are resolved with this release:
566 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
567 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
568 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
569 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
570 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
571 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
572 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
575 * New Linux interfaces: epoll_pwait, sched_getcpu.
577 * New generic interfaces: strerror_l.
579 * nscd can now cache the services database. Implemented by Ulrich Drepper.
583 * The following bugs are resolved with this release:
585 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
586 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
587 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
588 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
589 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
590 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
591 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
592 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
593 3225, 3251, 3252, 3253, 3273
595 * For Linux, the sorting of addresses returned by getaddrinfo now also
596 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
597 Implemented by Ulrich Drepper.
599 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
600 Implemented by Ulrich Drepper.
602 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
604 * New iconv module for MIK. Contributed by Alexander Shopov.
606 * For sites with broken group and/or passwd database, the auto-propagate
607 option of nscd can prevent creating ID lookup entries from the results
608 of a name lookup and vice versa. This usually is no problem but some
609 site might have problems with the default behavior.
610 Implemented by Ulrich Drepper.
612 * Iterating over entire database in NIS can be slow. With the
613 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
614 to trade time for memory. The entire database will be read at once.
615 Implemented by Ulrich Drepper.
617 * The interfaces introduced in RFC 3542 have been implemented by
620 * Support for the new ELF hash table format was added by Ulrich Drepper.
622 * Support for priority inheritance mutexes added by Jakub Jelinek and
625 * Support for priority protected mutexes added by Jakub Jelinek.
627 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
628 or_IN, csb_PL, fy_NL, sr_ME.
632 * More overflow detection functions.
634 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
635 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
637 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
638 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
639 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
640 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
641 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
642 by Masahide Washizawa.
644 * It is now possible to install audit libraries for the dynamic linker using
645 LD_AUDIT. Implemented by Ulrich Drepper.
647 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
648 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
649 For a libc and libpthread that works well on Linux 2.4 kernels, we
650 recommend using the stable 2.3 branch.
652 * The new function open_wmemstream acts like open_memstream,
653 but uses a wchar_t wide character buffer.
655 * The new function ppoll is an improved version of poll, similar to pselect.
657 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
658 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
659 renameat, unlinkat, linkat, symlinkat, readlinkat.
661 * New Linux kernel system calls: unshare,
662 inotify_init, inotify_add_watch, inotify_rm_watch.
664 * The euidaccess function is now also known by the alias eaccess,
665 for compatibility with some other systems.
667 * Timezone data updated to 2006b version.
671 * The following bugs are resolved with this release:
673 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
674 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
675 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
676 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
677 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
678 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
680 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
682 * As of this release, GCC 4 can be used to compile the C Library.
684 * Timezone data updated to 2005m version.
688 * The following bugs are resolved with this release:
690 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
691 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
692 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
693 777, 787, 821, 822, 823, 825
695 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
699 * Support for RFC 3678. Real implementations exist only for Linux so far.
700 Implemented by Ulrich Drepper.
702 * nscd can now cache entries persistently. Expiring entries are reloaded.
703 For speedups the cache can be shared in memory with client processes.
704 Implemented by Ulrich Drepper.
706 * nscd can now perform SELinux checks.
707 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
709 * getaddrinfo queries are now cached. Canonical name lookup is performed
711 Implemented by Ulrich Drepper.
713 * The nothrow function attribute is used when headers are used by gcc when
714 compiling C code. This can avoid significant amounts of exception
717 * The malloc functions perform more error checking and are stricter when
718 it comes to reacting on errors. The default action is to terminate
719 the process after showing an error message. Implemented by Ulrich Drepper.
721 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
722 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
724 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
725 namespaces using the new function dlmopen(). This feature is of course,
726 like most other dynamic loading functionality, not available in statically
727 linked applications. Implemented by Ulrich Drepper.
729 * Low-overhead boundary checking variants of string and some stdio functions
730 were added. These are to be used in conjunction with a gcc patch by
731 Jakub Jelinek which adds calls to these functions if possible.
732 Implemented by Jakub Jelinek and Ulrich Drepper.
734 * Old code for several operating systems and machine architectures that
735 have not been in working condition in a long time have been removed from
736 the main source tree maintained by the GNU C Library's maintainers.
737 These files are now reside in the separate `ports' source module
738 that is usable as an add-on when building the library.
742 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
743 interrogate the dynamic linker, compatible with the Solaris interface.
745 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
746 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
748 * getifaddrs now uses the netlink interface on Linux to get its information.
749 Implemented by Thorsten Kukuk.
751 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
752 Implemented by Ulrich Drepper.
754 * support for non-executable stacks on x86 has been added. Changes mostly
757 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
760 * getaddrinfo now performs destination address selection according to
765 * Thread-safe interfaces for many functions that access locale data
766 were added in version 2.3, but these features were omitted from NEWS.
767 Many functions have variants with an `_l' suffix that take a `locale_t'
768 object as a parameter rather than consulting the current locale.
769 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
770 create and maintain `locale_t' objects. Additionally, the new function
771 `uselocale' sets "the current locale" (as used by functions not so
772 parameterized) set for an individual thread. These features were added
773 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
775 * The functions getresuid, getresgid, setresuid, and setresgid, which
776 have long been available on Linux, are now declared in <unistd.h>
777 and are now also available on the Hurd.
779 * ELF thread-local storage support (TLS) now works on x86-64.
781 * The new dynamic string token $LIB is expanded in shared library names.
782 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
784 * Aldy Hernandez contributed complete software floating point support for
785 PowerPC machines with no FPU.
787 * fexecve is implemented on Linux.
789 * The `btowc' function should work at least twice as fast due to
790 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
792 * With approriate thread add-ons cancelable functions are now implemented
793 in libc.so as well. No need to call the function in libpthread. This
794 change allowed to finally disable the incorrect and expensive handling
795 of weak definition in ld.so.
797 * Yet more PLT entries in libc.so have been removed. We finally arrived
798 at the bare minimum. Startup times improved appropriately.
800 * Support for the new Linux/x86 system call interface was added. The
801 AT_SYSINFO auxiliary vector entry is recognized and handled.
805 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
808 * iconv (the program and the interface) now accepts empty names (excluding
809 options like //TRANSLIT) to mean "use charset of current locale".
811 * localedef can now transliterate characters in strings which are not in
812 the provided charmap. The information from the input locale is used.
814 * Prelinking support was added for ELF targets. This requires additional
815 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
817 * Read-only stdio streams now use mmap to speed up operation by eliminating
818 copying and buffer underflows. To use add 'm' to the mode string of
819 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
821 * The malloc functions were completely rewritten by Wolfram Gloger based
822 on Doug Lea's malloc-2.7.0.c.
824 * Isamu Hasegawa contributed a completely new and POSIX-conformant
825 implementation of regex.
827 * Bruno Haible upgraded the iconv and locale implementation to support
830 * Contents of the LC_* and LANG environment variables in the CEN style are
831 not recognized anymore. It never was used. Change by Ulrich Drepper.
833 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
834 thread-local storage (TLS) ABI on some platforms.
835 Changes by Ulrich Drepper. SH support by Kaz Kojima.
837 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
838 EUC-JISX0213, and TSCII.
840 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
841 BSD-compatible interface for getting all network interface addresses.
842 Implementation for IPv4 by Roland McGrath.
844 * Loading of locale data is faster due to the introduction of a locale
845 archive. Implemented by Roland McGrath and Ulrich Drepper.
847 * Startup times are significantly reduced by not using exported functions
848 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
851 * Steven Munroe contributed a port to PowerPC64/Linux.
855 * The Hurd now uses the GNU libio implementation of stdio rather than the
856 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
858 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
859 with the same behavior as the Linux system call of the same name.
863 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
864 128-bit long double format.
866 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
867 IBM1161, and IBM1162 charsets.
869 * Andreas Jaeger contributed a port to x86-64/Linux.
871 * Peter Bruin contributed a port to PowerPC/Hurd.
873 * libc functions using I/O streams now can handle wide-oriented streams
876 * optimizations in the dynamic linker. Binaries created by recent binutils
877 versions start up quicker due to reduced time spent on relocations.
879 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
883 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
884 asinh, atanh, j0 for the 128-bit long double format.
886 * Bruno Haible updated all the code handling Unicode in some form to
889 * Speed of regex for single-byte locales is back to previous levels.
890 Patch by Isamu Hasegawa.
892 * Alpha, SPARC, and IA-64 now also using floating stacks.
894 * Startup time of internationalized applications greatly improved through
895 iconv cache. Use iconvconfig to generate the cache file.
896 Contributed by Ulrich Drepper.
898 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
899 severe performance problems. Patch by David Mosberger.
901 * The Hurd port got a lot more functionality like AIO, various stdio
902 extensions, etc. Mainly done by Roland McGrath.
904 * mtrace can now lookup symbols in shared libraries.
908 * Intel's IA-64 math library is largely integrated. It provides fast and
909 accurate implementatations for most basic and standard math functions
910 in float, double, and long double format.
912 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
913 and asin for the 96-bit long double format and asin, log, tan for the
914 128-bit long double format.
916 * The beginning of a last-bit accurate math library by IBM Haifa were added.
917 The basic double functions exist today. Contributed by Abraham Ziv
918 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
919 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
921 * An asynchronous name lookup library was added. The interface is designed
922 after POSIX AIO. The proposal was circulated beforehand to get comments.
923 No negative ones came in. Implemented by Ulrich Drepper.
925 * Port to S390/64bit contributed by Martin Schwidefsky
926 <schwidefsky@de.ibm.com>.
928 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
929 of functions for Linux/IA-64.
931 * The RPC code is now thread safe. Threads can now use the same service
932 of different services at the same time. Patch by Eric Norum
933 <eric.norum@usask.ca> with some help by Ulrich Drepper.
935 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
936 family of functions for Linux/S390.
938 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
939 of functions for Linux/x86.
941 * Port to Linux/CRIS contributed by Axis Communications.
945 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
946 we can now check for namespace violations and missing declarations. The
947 result is that almost all headers are now Unix-compliant (as defined in
948 the upcoming XPG6). The negative side is that some programs might need
949 corrections, too, if they depend on the incorrect form of the headers in
950 previous versions which defined too many symbols and included too many
953 * regex now handles multibyte character sets correctly.
954 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
956 * iconv (the program) does now conform to the upcoming XPG6 and handles
957 charmaps. Instead of the charset names the path of charmaps can be
958 provided and the conversion happens based on this data.
959 Contributed by Ulrich Drepper.
961 * The locale program now provides detailed information about the installed
966 only lists the names of the supported locales
970 provides details such as country, language, and codeset name.
971 Contributed by Ulrich Drepper.
975 * The gencat program now parses the input file according to the charset
976 selected by the LC_CTYPE category. This is important for stateful
977 character sets. To make generating catalogs easier there is a way
978 to overwrite the charset selected by the locale: before the first
979 message or $ quote line the catalog can contain a line like
983 to select the charset (ISO-8859-2 in this case).
985 Implemented by Shinya Hanataka and Ulrich Drepper.
987 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
988 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
989 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
991 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
992 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
994 * The LANGUAGE environment variable is now ignored unless the locale is
995 changed from the default "C" locale.
997 * The usual bug fixes.
1001 * Greg McGary added runtime support for bounds checking using gcc's
1002 new -fbounded-pointers option. ix86 target is complete. PowerPC
1005 * Thorsten Kukuk added secure mode support to nscd.
1007 * The Berkeley db libraries have been removed.
1009 Related, the nss_db module is now in a separate package since it
1010 obviously requires a database library being available.
1012 * Wide character I/O streams implemented by Ulrich Drepper.
1014 * Functions from the extended socket API added by Ulrich Drepper.
1016 * Functions feenableexcept and fedisableexcept to control the
1017 behaviour of individual exceptions have been added by Andreas Jaeger.
1019 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1021 * The resolver code has been updated from bind 8.2.3-T5B which supports
1022 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1025 This change could in some situations effect backward compatibility. Since
1026 now `_res' is a thread-local instead of a global variable, modifying it
1027 in one thread does not have any effect in other threads.
1029 The resolver library was also extended to allow IPv6 as the transport
1030 protocol for the requests. This work was done by Stig Venaas.
1032 * Compatibility code for K&R C compilers has been removed from the
1033 header files. A ISO C compiler is needed to use the library
1034 (conforming to either C89 or C99 standard).
1036 * Complete rewrite of the localedef program to support multibyte character
1037 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1038 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1039 Implemented by Ulrich Drepper.
1041 Bruno Haible significantly improved the generation and use of the data
1042 structures for the wide character tables.
1044 * Plural handling in gettext implemented by Ulrich Drepper.
1046 * The utmp daemon has been removed.
1048 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1050 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1053 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1055 * POSIX barriers implemented by Kaz Kylheku.
1057 * POSIX spawn function family implemented by Ulrich Drepper.
1059 * POSIX spinlocks are now available.
1061 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1063 * the configure option --enable-kernel=X.Y.Z allows to strip out
1064 compatibility for kernel versions before X.Y.Z. This is currently only
1065 implemented for Linux.
1067 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1068 field sin6_scope_id. This means that all programs using IPv6 should be
1069 recompiled. Don't expect binary compatibility with previous glibc
1072 * various conversion modules for IBM character sets contributed by
1075 * IA-64 port by Jes Sorensen and HJ Lu.
1089 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1091 * New xdr functions are added; some rpc functions are now 64bit clean.
1093 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1095 * Fixed known incompatibilities with glibc 2.0.
1097 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1099 * Optimized a number of functions (especially the ELF dynamic loader).
1101 * Update timezone data files.
1103 * lots of charmaps corrections
1105 * some new locale definitions and charmaps
1110 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1111 conform to POSIX member type requirements. Symbol versions have been
1112 adjusted as needed within the library, and for direct use by applications,
1113 but there is potential for problems if third-party libraries use
1114 struct timeval as part of their interface. This does not present
1115 a problem for X and other "essential" system libraries.
1117 * An additional locale model to support C++ Standard Library locale
1118 model and probably more was implemented by Ulrich Drepper.
1120 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1123 * Miles Bader provided the `argp' function family to support hierachical
1124 command line argument parsing, layered on top of getopt.
1126 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1128 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1131 * scanf recognizes the %a and %A format for scanning floating point numbers.
1133 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1134 information and interfaces for the available integer types.
1136 * about 130 new math functions were added to implement the ISO C9x math
1139 * the new header <complex.h> contains definitions of the complex math
1140 functions from ISO C 9X.
1142 * the new header <tgmath.h> defines generic macros to use complex or
1143 real valued functions.
1145 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1147 * Andreas Jaeger provided a test suite for the math library.
1149 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1151 * Ulrich Drepper added character set conversion functions (iconv).
1153 * Optimized string functions have been added.
1155 * The localedata addon is now part of glibc.
1157 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1159 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1160 daemon for NSS (nscd).
1162 Missing a better place here are some numbers on improvements. Under
1163 Linux 2.1.125 un-tar-ing the kernel sources takes
1167 using local files 12.19s 6.88s 22.91s
1169 using NIS 13.92s 8.91s 26.34s
1171 using NIS & nscd 10.37s 7.34s 25.30s
1173 using NIS+ 27.57s 30.37s 640.46s
1175 using NIS+ & nscd 10.25s 7.83s 26.51s
1177 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1179 Keep in mind that non-namelookup related operations dominate above times.
1180 It was just a common complain that using NIS+ unpacking the kernel is
1183 [1] The old nscd implementation is not available anymore since it was
1184 distributed with glibc up to version 2.0.98 and thus is now replaced.
1186 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1188 * Mark Kettenis provided a Hesiod NSS module.
1190 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1191 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1193 * rcmd can now handle netgroups (Dick Streefland).
1195 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1198 * Support for the IPv6 protocol has been added to the socket API, as per the
1199 latest draft standards.
1201 * Support for Linux 2.2 has been added.
1203 * Interface changes relative to the latest 2.0.x release:
1204 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1205 addseverity NEW: Unix98
1206 alphasort64 NEW: LFS
1207 argp_err_exit_status NEW: argp, GNU ext
1208 argp_error NEW: argp, GNU ext
1209 argp_failure NEW: argp, GNU ext
1210 argp_help NEW: argp, GNU ext
1211 argp_parse NEW: argp, GNU ext
1212 argp_program_bug_address NEW: argp, GNU ext
1213 argp_program_version NEW: argp, GNU ext
1214 argp_program_version_hook NEW: argp, GNU ext
1215 argp_state_help NEW: argp, GNU ext
1216 argp_usage NEW: argp, GNU ext
1217 authdes_create NEW: Secure RPC
1218 authdes_getucred NEW: Secure RPC
1219 authdes_pk_create NEW: Secure RPC
1220 backtrace NEW: GNU ext.
1221 backtrace_symbols NEW: GNU ext.
1222 backtrace_symbols_fd NEW: GNU ext.
1224 cacosf NEW: ISO C 9x
1225 cacosh NEW: ISO C 9x
1226 cacoshf NEW: ISO C 9x
1227 cacoshl NEW: ISO C 9x
1228 cacosl NEW: ISO C 9x
1235 casinf NEW: ISO C 9x
1236 casinh NEW: ISO C 9x
1237 casinhf NEW: ISO C 9x
1238 casinhl NEW: ISO C 9x
1239 casinl NEW: ISO C 9x
1241 catanf NEW: ISO C 9x
1242 catanh NEW: ISO C 9x
1243 catanhf NEW: ISO C 9x
1244 catanhl NEW: ISO C 9x
1245 catanl NEW: ISO C 9x
1246 cbc_crypt NEW: Secure RPC
1250 ccoshf NEW: ISO C 9x
1251 ccoshl NEW: ISO C 9x
1257 cimagf NEW: ISO C 9x
1258 cimagl NEW: ISO C 9x
1259 clearerr_locked REMOVED
1260 clntunix_create NEW: sunrpc ext
1262 clog10 NEW: ISO C 9x
1263 clog10f NEW: ISO C 9x
1264 clog10l NEW: ISO C 9x
1274 cprojf NEW: ISO C 9x
1275 cprojl NEW: ISO C 9x
1277 crealf NEW: ISO C 9x
1278 creall NEW: ISO C 9x
1283 csinhf NEW: ISO C 9x
1284 csinhl NEW: ISO C 9x
1287 csqrtf NEW: ISO C 9x
1288 csqrtl NEW: ISO C 9x
1292 ctanhf NEW: ISO C 9x
1293 ctanhl NEW: ISO C 9x
1295 des_setparity NEW: Secure RPC
1296 ecb_crypt NEW: Secure RPC
1297 endutxent NEW: Unix98
1299 exp10f NEW: ISO C 9x
1300 exp10l NEW: ISO C 9x
1304 fattach NEW: STREAMS
1305 fdetach NEW: STREAMS
1309 feclearexcept NEW: ISO C 9x
1310 fegetenv NEW: ISO C 9x
1311 fegetexceptflag NEW: ISO C 9x
1312 fegetround NEW: ISO C 9x
1313 feholdexcept NEW: ISO C 9x
1315 feraiseexcept NEW: ISO C 9x
1316 ferror_locked REMOVED
1317 fesetenv NEW: ISO C 9x
1318 fesetexceptflag NEW: ISO C 9x
1319 fesetround NEW: ISO C 9x
1320 fetestexcept NEW: ISO C 9x
1321 feupdateenv NEW: ISO C 9x
1322 fflush_locked REMOVED
1326 fgets_unlocked NEW: GNU ext.
1327 fileno_locked REMOVED
1339 fputc_locked REMOVED
1340 fputs_unlocked NEW: GNU ext.
1341 fread_unlocked NEW: GNU ext.
1346 fstatvfs NEW: Unix98
1350 ftruncate64 NEW: LFS
1352 fwrite_unlocked NEW: GNU ext.
1353 gai_strerror NEW: IPv6
1357 getchar_locked REMOVED
1359 getdate_err NEW: Unix98
1360 getdate_r NEW: GNU ext.
1362 getnameinfo NEW: IPv6
1363 getnetname NEW: Secure RPC
1364 getpmsg NEW: STREAMS
1365 getpt NEW: Unix98 PTY
1366 getrlimit64 NEW: LFS
1367 getutxent NEW: Unix98
1368 getutxid NEW: Unix98
1369 getutxline NEW: Unix98
1370 glob64 NEW: GNU ext.
1371 globfree64 NEW: GNU ext.
1372 gnu_get_libc_release NEW: GNU ext.
1373 gnu_get_libc_version NEW: GNU ext.
1374 grantpt NEW: Unix98 PTY
1375 host2netname NEW: Secure RPC
1377 iconv_close NEW: iconv
1378 iconv_open NEW: iconv
1379 if_freenameindex NEW: IPv6
1380 if_indextoname NEW: IPv6
1381 if_nameindex NEW: IPv6
1382 if_nametoindex NEW: IPv6
1383 in6addr_any NEW: IPv6
1384 in6addr_loopback NEW: IPv6
1385 inet6_isipv4mapped NEW: IPv6
1386 isastream NEW: STREAMS
1387 iswblank NEW: GNU ext.
1388 key_decryptsession NEW: Secure RPC
1389 key_decryptsession_pk NEW: Secure RPC
1390 key_encryptsession NEW: Secure RPC
1391 key_encryptsession_pk NEW: Secure RPC
1392 key_gendes NEW: Secure RPC
1393 key_get_conv NEW: Secure RPC
1394 key_secretkey_is_set NEW: Secure RPC
1395 key_setnet NEW: Secure RPC
1396 key_setsecret NEW: Secure RPC
1397 llrint NEW: ISO C 9x
1398 llrintf NEW: ISO C 9x
1399 llrintl NEW: ISO C 9x
1400 llround NEW: ISO C 9x
1401 llroundf NEW: ISO C 9x
1402 llroundl NEW: ISO C 9x
1407 lrintf NEW: ISO C 9x
1408 lrintl NEW: ISO C 9x
1409 lround NEW: ISO C 9x
1410 lroundf NEW: ISO C 9x
1411 lroundl NEW: ISO C 9x
1413 makecontext NEW: Unix98
1414 mempcpy NEW: GNU ext.
1417 modify_ldt NEW: kernel
1421 nearbyint NEW: ISO C 9x
1422 nearbyintf NEW: ISO C 9x
1423 nearbyintl NEW: ISO C 9x
1424 netname2host NEW: Secure RPC
1425 netname2user NEW: Secure RPC
1426 nexttoward NEW: ISO C 9x
1427 nexttowardf NEW: ISO C 9x
1428 nexttowardl NEW: ISO C 9x
1432 passwd2des NEW: Secure RPC
1434 pow10f NEW: GNU ext.
1435 pow10l NEW: GNU ext.
1438 printf_size NEW: GNU ext.
1439 printf_size_info NEW: GNU ext.
1440 profil_counter REMOVED
1441 pthread_mutexattr_getkind_np REPLACED
1442 pthread_mutexattr_setkind_np REPLACED
1443 ptsname NEW: Unix98 PTY
1444 ptsname_r NEW: Unix98 PTY
1446 putchar_locked REMOVED
1447 putgrent NEW: GNU ext.
1449 putpmsg NEW: STREAMS
1450 pututxline NEW: Unix98
1454 readdir64_r NEW: LFS
1455 remquo NEW: ISO C 9x
1456 remquof NEW: ISO C 9x
1457 remquol NEW: ISO C 9x
1459 roundf NEW: ISO C 9x
1460 roundl NEW: ISO C 9x
1462 scalbln NEW: ISO C 9x
1463 scalblnf NEW: ISO C 9x
1464 scalblnl NEW: ISO C 9x
1466 sendfile NEW: kernel
1467 setcontext NEW: Unix98
1468 setrlimit64 NEW: LFS
1469 setutxent NEW: Unix98
1471 sigignore NEW: Unix98
1472 sigqueue NEW: POSIX.1b
1473 sigrelse NEW: Unix98
1474 sigset NEW: POSIX.1b
1475 sigtimedwait NEW: POSIX.1b
1476 sigwaitinfo NEW: POSIX.1b
1477 sincos NEW: GNU ext.
1478 sincosf NEW: GNU ext.
1479 sincosl NEW: GNU ext.
1483 strcasestr NEW: GNU ext.
1484 strtoimax NEW: ISO C 9x
1485 strtoumax NEW: ISO C 9x
1486 strverscmp NEW: GNU ext.
1487 svcauthdes_stats NEW: Secure RPC
1488 svcunix_create NEW: sunrpc etx
1489 svcunixfd_create NEW: sunrpc ext
1490 swapcontext NEW: Unix98
1491 tcgetsid NEW: Unix98 PTY
1492 tdestroy NEW: GNU ext.
1493 tgamma NEW: ISO C 9x
1494 tgammaf NEW: ISO C 9x
1495 tgammal NEW: ISO C 9x
1499 truncf NEW: ISO C 9x
1500 truncl NEW: ISO C 9x
1502 unlockpt NEW: Unix98 PTY
1503 updwtmpx NEW: Unix98
1504 user2netname NEW: Secure RPC
1505 utmpxname NEW: Unix98
1506 versionsort NEW: GNU ext.
1507 versionsort64 NEW: GNU ext.
1509 wcscasecmp NEW: GNU ext.
1510 wcsncasecmp NEW: GNU ext.
1511 wcsnlen NEW: GNU ext.
1512 wcstoimax NEW: ISO C 9x
1513 wcstoll NEW: ISO C 9x
1514 wcstoull NEW: ISO C 9x
1515 wcstoumax NEW: ISO C 9x
1517 wordexp NEW: POSIX.2
1518 wordfree NEW: POSIX.2
1519 write_profiling REMOVED
1520 xdecrypt NEW: Secure RPC
1521 xdr_authdes_cred NEW: Secure RPC
1522 xdr_authdes_verf NEW: Secure RPC
1523 xdr_cryptkeyarg NEW: Secure RPC
1524 xdr_cryptkeyarg2 NEW: Secure RPC
1525 xdr_cryptkeyres NEW: Secure RPC
1526 xdr_getcredres NEW: Secure RPC
1527 xdr_key_netstarg NEW: Secure RPC
1528 xdr_key_netstres NEW: Secure RPC
1529 xdr_keybuf NEW: Secure RPC
1530 xdr_keystatus NEW: Secure RPC
1531 xdr_netnamestr NEW: Secure RPC
1532 xdr_sizeof NEW: Secure RPC
1533 xdr_unixcred NEW: sunrpc ext
1534 xencrypt NEW: Secure RPC
1535 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1546 * inet_ntoa is thread-safe
1548 * updwtmp is moved from libutil to libc
1550 * rewrite of cbrt function
1552 * update of timezone data
1566 * add atoll function
1568 * fix complex problems in Berkeley DB code
1570 * fix math functions
1574 * fixed lots of header problems (especially Linux/GNU specific)
1576 * dynamic loader preserves all registers
1578 * Roland McGrath provided support for handling of auxiliary objects in
1579 the ELF dynamic loader.
1581 * support for parallel builds is improved
1585 * GNU extensions are no longer declared by default. To enable them you
1586 must define the macro `_GNU_SOURCE' in your program or compile with
1589 * The library has changed from using GNU ld symbol aliases to using weak
1590 symbols where available. The ELF object file format supports weak
1591 symbols; GNU ld also supports weak symbols in the a.out format. (There
1592 is also now support for other GNU ld extensions in ELF. Use the
1593 `--with-elf' option to configure to indicate you have ELF, and
1594 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1595 of many files which contained only symbol aliases, reducing the size of
1596 the source and the compiled library; many other files were renamed to
1597 less cryptic names previously occupied by the symbol alias files.
1598 There is a new header file <elf.h> for programs which operate on
1599 files in the ELF format.
1601 * Converted to Autoconf version 2, so `configure' has more options.
1602 Run `configure --help' to see the details.
1604 * The library can now be configured to build profiling, highly-optimized
1605 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1606 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1607 `configure' enable building these extra libraries. The shared library is
1608 built by default when using both ELF and GNU ld. When shared libraries
1609 are enabled, the new library `-ldl' is available for arbitrary run-time
1610 loading of shared objects; its interface is defined in <dlfcn.h>. The
1611 new header file <link.h> gives access to the internals of the run-time
1612 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1613 application of same name on other systems and it provides information
1614 about dynamically linked binaries.
1616 * The C library now provides the run-time support code for profiling
1617 executables compiled with `-pg'. Programs can control the profiling code
1618 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1619 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1620 the support for this file format was contributed by David Mosberger-Tang.
1622 * The math code has been replaced with a math library based on fdlibm from
1623 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1624 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1625 functions. The math functions now reside in a separate library, so
1626 programs using them will need to use `-lm' their linking commands.
1628 * John C. Bowman contributed optimized ix87 assembler inline functions.
1630 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1631 mechanism similar to that found in Solaris 2. This is now used for the
1632 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1633 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1634 file controls what services are used for each individual database. This
1635 works by loading shared libraries with names specified in `nsswitch.conf',
1636 so service modules can be changed or added at any time without even
1637 relinking any program. Currently there are the file, db, and NIS based
1638 NSS services available.
1640 * The new functions `strtoq' and `strtouq' parse integer values from
1641 strings, like `strtol' and `strtoul', but they return `long long int' and
1642 `unsigned long long int' values, respectively (64-bit quantities).
1644 * The new functions `strtof' and `strtold' parse floating-point values from
1645 strings, like `strtod', but they return `float' and `long double' values,
1646 respectively (on some machines `double' and `long double' are the same).
1648 * Ulrich Drepper has contributed new implementations of the floating-point
1649 printing and reading code used in the `printf' family of functions and
1650 `strtod', `strtof', and `strtold'. These new functions are perfectly
1651 accurate, and much faster than the old ones.
1653 * The implementation of the POSIX locale model was completely rewritten by
1654 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1655 to compile the POSIX locale definition.
1657 * The former dummy implementations of the strcoll and strxfrm function are
1658 now replaced by fully functional code contributed by Ulrich Drepper. The
1659 collation information comes from the POSIX locale definitions.
1661 * The new header <langinfo.h> defines an interface for accessing
1662 various locale-dependent data (using the locale chosen with `setlocale').
1664 * Ulrich Drepper has contributed a new suite of functions for operation on
1665 wide-character and multibyte-character strings, in <wchar.h>;
1666 and classification and case conversion of wide characters, in <wctype.h>.
1667 These new functions are conforming to the ISO C, Amendement 1 specification.
1669 * There is now a second implementation of the standard I/O library available.
1670 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1671 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1673 * You can now use positional parameter specifications in format strings
1674 for the `printf' and `scanf' families of functions. For example,
1675 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1676 ``Number 6, Mr Jones''. This is mainly useful when providing different
1677 format strings for different languages, whose grammars may dictate
1678 different orderings of the values being printed. To support this
1679 feature, the interface for `register_printf_handler' has changed; see
1680 the header file <printf.h> for details.
1682 * The `printf' and `scanf' families of functions now understand a new
1683 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1684 to group numbers as indicated by the locale; for `scanf' and friends, this
1685 says to accept as valid only a number with all the proper grouping
1686 separators in the right places. In the default "C" locale, numbers are
1687 not grouped; but locales for specific countries will define the usual
1688 conventions (i.e. separate thousands with `,' in the US locale).
1690 * The pgrp functions have been regularized, slightly incompatibly but much
1691 less confusingly. The core functions are now `getpgid' and `setpgid',
1692 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1693 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1694 provided for compatibility. There is no longer an incompatible `getpgrp'
1695 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1697 * The new header file <fts.h> and suite of functions simplify programs that
1698 operate on directory trees. This code comes from 4.4 BSD.
1700 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1701 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1702 NSS scheme used in glibc.
1704 * There is a new malloc debugging hook `__memalign_hook'.
1706 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1707 `unsigned int' in <sys/types.h>. These are for compatibility only and
1708 their use is discouraged.
1710 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1711 done differently, so that it works even without GNU ld.
1713 * New function `euidaccess' checks allowed access to a file like `access',
1714 but using the effective IDs instead of the real IDs.
1716 * The time zone data files have been updated for the latest and greatest
1717 local time conventions of the countries of the world.
1719 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1722 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1723 for formatting floating-point numbers. They are provided only for
1724 compatibility; new programs should use `sprintf' instead. There are
1725 also equivalent function for the `long double' floating-point type and
1726 all functions also exist in a reentrant form.
1728 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1729 functions for maintaining the login-record files (primarily of use to
1730 system programs such as `login'), and convenient functions for
1731 allocating and initializing a pseudo-terminal (pty) device.
1733 * Ulrich Drepper has contributed new support for System V style
1734 shared memory and IPC on systems that support it.
1736 * Ulrich Drepper has contributed several miscellaneous new functions found
1737 in System V: The `hsearch' family of functions provide an effective
1738 implementation of hash tables; `a64l' and `l64a' provide a very simple
1739 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1742 * Ulrich Drepper has contributed new reentrant counterparts for the
1743 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1745 * Ulrich Drepper has contributed new, highly-optimized versions of several
1746 string functions for the i486/Pentium family of processors.
1748 * Ulrich Drepper has updated the Linux-specific code, based largely
1749 on work done in Hongjiu Lu's version of GNU libc for Linux.
1750 The GNU library now supports Linux versions 2.0.10 and later,
1751 using the ELF object file format (i[3456]86-*-linux).
1753 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1755 * David Mosberger-Tang and Richard Henderson have ported the C library
1756 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1757 dynamic linking support for ELF/Alpha.
1759 * Richard Henderson contributed several Alpha optimized assembler function
1760 for arithmetic and string handling.
1762 * Ulrich Drepper has contributed a new set of message catalog functions to
1763 support multiple languages using the <libintl.h> interface, for use with
1764 his new package GNU gettext. Translation volunteers have contributed
1765 catalogs of the library's messages in Spanish, German, and Korean.
1767 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1768 program and the `catgets' function for reading the catalog files it
1769 creates. (The <libintl.h> interface is preferred; we include the
1770 <nl_types.h> interface using `catgets' only for source compatibility with
1771 programs already written to use it.)
1773 * New header file <values.h> gives SVID-compatible names for <limits.h>
1776 * Various new macros, declarations, and small header files for compatibility
1779 * New function `group_member' is a convenient way to check if a process has
1780 a given effective group ID.
1782 * When using GCC 2.7 and later, the socket functions are now declared in a
1783 special way so that passing an argument of type `struct sockaddr_in *',
1784 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1785 `struct sockaddr *' type, does not generate a type-clash warning.
1787 * New function `error' declared in header file <error.h> is a convenient
1788 function for printing error messages and optionally exiting; this is the
1789 canonical function used in GNU programs. The new functions `err', `warn',
1790 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1791 doing the same thing.
1793 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1794 POSIX.2 `glob' function to do ~ and {...} expansion.
1796 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1797 `clearenv' which is used in POSIX.9 is also available.
1799 * New function `getsid' returns session ID number on systems that support it.
1801 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1802 files <db.h> and <mpool.h> provide a rich set of functions for several
1803 types of simple databases stored in memory and in files, and <ndbm.h> is
1804 an old `ndbm'-compatible interface using the `db' functions. Link with
1805 `-ldb' to get these functions.
1807 * New macro `strdupa' copies a string like `strdup', but uses local stack
1808 space from `alloca' instead of dynamic heap space from `malloc'.
1810 * New function `strnlen' is like `strlen' but searches only a given maximum
1811 number of characters for the null terminator. `stpncpy', `strndup' and
1812 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1815 * New function `statfs' in header <sys/statfs.h>.
1817 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1818 provide convenient functions for operating on blocks of null-terminated
1821 * A new suite of functions in <utmp.h> handle all the details of reading
1822 and writing the utmp file.
1824 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1827 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1828 completely POSIX compliant and also implemented the extended functionality
1829 to handle alternate digit representation and alternate era date formats.
1831 * Ulrich Drepper provided an implementation of the `strptime' function
1832 defined in XPG4.2 which transforms a string into a `struct tm' value.
1834 * Paul Eggert provided the tzselect shell script as part of the timezone
1835 code. The shell script makes it easy to select the correct timezone
1838 * The implementation of the malloc family of functions is completely replaced
1839 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1840 The implementation uses the mmap function (if available) and it is
1841 optimized for the use in multi threaded programs.
1843 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1844 functions. This new functionality is usable by specifying a special
1845 salt string and it is compatible with implementation on *BSD systems.
1847 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1848 `getsubopt' to handle second level command line options, `bsd_signal'
1849 to access BSD style `signal' functionality, the obsolete `regexp' style
1852 * the `lchown' function is available on system which support this
1855 * The implementation of the shadow password handling function was contributed
1858 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1860 * POSIX.1g support was added. The <sys/select.h> header is available,
1861 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1862 implementation of `getaddrinfo'.
1866 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1868 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1869 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1871 * The new function `daemon' from 4.4 BSD is useful for server programs that
1872 want to put themselves in the background.
1874 * Joel Sherrill has contributed support for several standalone boards that
1875 run without an operating system.
1877 * `printf', `scanf' and friends now accept a `q' type modifier for long
1878 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1880 * All of the code taken from BSD (notably most of the math and networking
1881 routines) has been updated from the BSD 4.4-Lite release.
1883 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1885 * The new functions `getdomainname' and `setdomainname' fetch or change the
1886 YP/NIS domain name. These are system calls which exist on systems which
1889 * The time zone data files have been updated for the latest international
1892 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1893 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1897 * The C library now includes support for Sun RPC, from Sun's free
1898 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1899 are included. (There is still no support for YP.)
1901 * Tom Quinn has contributed a port of the C library to SGI machines running
1902 Irix 4 (mips-sgi-irix4).
1904 * The new `lockf' function is a simplified interface to the locking
1905 facilities of `fcntl', included for compatibility.
1907 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1909 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1911 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1914 * The error message printed by `assert' for a failed assertion now includes
1915 the name of the program (if using GNU ld) and the name of the calling
1916 function (with versions of GCC that support this).
1918 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1920 * The library now includes the <sys/mman.h> header file and memory
1921 management functions `mmap', `munmap', `mprotect', `msync', and
1922 `madvise', on systems that support those facilities.
1924 * The interface for `mcheck' has changed slightly: the function called to
1925 abort the program when an allocation inconsistency is detected now takes
1926 an argument that indicates the type of failure. The new function
1927 `mprobe' lets you request a consistency check for a particular block at
1928 any time (checks are normally done only when you call `free' or `realloc'
1931 * It is now possible to easily cross-compile the C library, building on one
1932 system a library to run on another machine and/or operating system. All
1933 you need to do is set the variable `HOST_CC' in `configparms' to the
1934 native compiler for programs to run on the machine you are building on (a
1935 few generator programs are used on Unix systems); set `CC' to the
1938 * The new function `fexecve' (only implemented on the GNU system) executes
1939 a program file given a file descriptor already open on the file.
1943 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1944 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1946 * You can set the variable `libprefix' in `configparms' to specify a prefix
1947 to be prepended to installed library files; this makes it easy to install
1948 the GNU C library to be linked as `-lgnuc' or whatever.
1950 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1951 copies a limited number of characters from a string, and returns the
1952 address of the last character written.
1954 * You no longer need to check for whether the installed `stddef.h' is
1955 compatible with the GNU C library. configure now checks for you.
1957 * You can now define a per-stream `fileno' function to convert the
1958 stream's cookie into an integral file descriptor.
1960 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1961 allocates zero bytes of storage, and returns a unique pointer which
1962 you can pass to `realloc' or `free'. The behavior is undefined if
1963 you dereference this pointer.
1965 * The C library now runs on Sony NEWS m68k machines running either
1966 NewsOS 3 or NewsOS 4.
1968 * The new `syscall' function is a system-dependent primitive function
1969 for invoking system calls. It has the canonical behavior on Unix
1970 systems, including unreliable return values for some calls (such as
1971 `pipe', `fork' and `getppid').
1973 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1974 to `EAGAIN', which is the preferred name. On systems whose kernels
1975 use two distinct codes, the C library now translates EWOULDBLOCK to
1976 EAGAIN in every system call function.
1980 * The GNU C Library Reference Manual is now distributed with the library.
1981 `make dvi' will produce a DVI file of the printed manual.
1982 `make info' will produce Info files that you can read on line using C-h i
1983 in Emacs or the `info' program.
1984 Please send comments on the manual to bug-glibc-manual@gnu.org.
1986 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1988 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1990 * Jason Merrill has contributed a port to the Sequent Symmetry running
1991 Dynix version 3 (i386-sequent-dynix).
1993 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1994 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1996 * New function `memory_warnings' lets you arrange to get warnings when
1997 malloc is running out of memory to allocate, like Emacs gives you.
1999 * The C library now contains the relocating allocator used in Emacs 19 for
2000 its editing buffers. This allocator (ralloc) minimizes allocation
2001 overhead and fragmentation by moving allocated regions around whenever it
2002 needs to. You always refer to a ralloc'd region with a "handle" (a
2003 pointer to a pointer--an object of type `void **').
2005 * There is a new `printf' format: `%m' gives you the string corresponding
2006 to the error code in `errno'.
2008 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2009 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2010 pass, the `a' modifier says to fill in a `char **' you pass with a
2013 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2014 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2015 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2017 * `mkstemp' is a traditional Unix function to atomically create and open a
2018 uniquely-named temporary file.
2022 * The standard location for the file that says what the local timezone is
2023 has changed again. It is now `/usr/local/etc/localtime' (or more
2024 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2026 * The distribution no longer contains any files with names longer than 14
2029 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2030 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2032 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2036 * The configuration process has changed quite a bit. The `configure'
2037 script is now used just like the configuration scripts for other GNU
2038 packages. The `sysdeps' directory hierarchy is much rearranged.
2039 The file `INSTALL' explains the new scheme in detail.
2041 * The header files no longer need to be processed into ANSI C and
2042 traditional C versions. There is just one set of files to install, and
2043 it will work with ANSI or old C compilers (including `gcc -traditional').
2045 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2046 MIPS DECStation running Ultrix 4.
2048 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2049 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2050 made itself into a shared library.
2052 * Yet further improved support for the i386, running 4.3 BSD-like systems
2053 (such as Mach 3 with the Unix single-server), or System V.
2055 * New function `strncasecmp' to do case-insensitive string comparison
2056 with limited length.
2058 * New function `strsep' is a reentrant alternative to `strtok'.
2060 * New functions `scandir' and `alphasort' for searching directories.
2062 * New function `setenv' is a better interface to `putenv'.
2064 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2065 function for traversing a directory tree.
2067 * The GNU obstack package is now also part of the C library.
2068 The new function `open_obstack_stream' creates a stdio stream that
2069 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2070 formatted output directly to an obstack.
2072 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2073 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2075 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2077 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2078 things to your strings.
2080 * There are some new test programs: test-fseek, testmb, and testrand.
2082 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2083 These ports are not finished, but are a good starting place for really
2084 supporting those systems.
2086 * `/etc/localtime' is now the standard location for the file that says what
2087 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2088 This follows the general principle that `/etc' is the place for all local
2089 configuration files.
2091 * The C library header files now use `extern "C"' when used by the C++
2092 compiler, so the C library should now work with C++ code.
2094 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2095 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2098 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2099 function which uses the `merge sort' algorithm, and is said to be
2100 significantly faster than the old GNU `qsort' function. Merge sort is
2101 now the standard `qsort' function. The new algorithm can require a lot
2102 of temporary storage; so, the old sorting function is called when the
2103 required storage is not available.
2105 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2106 provides the Unix `crypt' function, plus some other entry points.
2108 * The code and header files taken from 4.4 BSD have been updated with the
2109 latest files released from Berkeley.
2111 ----------------------------------------------------------------------
2112 Copyright information:
2114 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2116 Permission is granted to anyone to make or distribute verbatim copies
2117 of this document as received, in any medium, provided that the
2118 copyright notice and this permission notice are preserved,
2119 thus giving the recipient permission to redistribute in turn.
2121 Permission is granted to distribute modified versions
2122 of this document, or of portions of it,
2123 under the above conditions, provided also that they
2124 carry prominent notices stating who last changed them.
2127 version-control: never
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