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, 14154, 14157, 14283, 14328, 14331, 14337
17 * The following bugs are resolved with this release:
19 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
20 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
21 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
22 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
23 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
24 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
25 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
26 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
27 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
28 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
29 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
30 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
31 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
32 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
33 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
34 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
35 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
36 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
37 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
38 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
39 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
40 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
43 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
44 configuring glibc with:
45 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
46 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
47 Implemented by H.J. Lu.
51 + define static_assert
55 + declare at_quick_exit and quick_exit also for ISO C11
57 + aligned_alloc. NB: The code is deliberately allows the size parameter
58 to not be a multiple of the alignment. This is a moronic requirement
59 in the standard but it is only a requirement on the caller, not the
64 + uchar.h support added
66 + CMPLX, CMPLXF, CMPLXL added
68 Implemented by Ulrich Drepper.
70 * Support for the IA-64 has been moved to ports.
72 * Remove support for anything but ELF binary format
74 * Checking versions of poll, ppoll added.
75 Implemented by Ulrich Drepper.
77 * More generic and 64-bit performance optimizations to math functions.
78 Implemented by Ulrich Drepper.
80 * New configure option --enable-obsolete-rpc makes the deprecated RPC
81 headers and functions available at compile time as they were before
82 version 2.14. This option will be removed at some time in the future
83 after the TI-RPC library becomes fully sufficient for the needs of
84 existing applications.
86 * Compatibility code for Linux kernel versions before 2.4 has been removed.
87 Note that glibc is not expected to work with any Linux kernel version
90 * New header <sys/auxv.h> and function getauxval allowing easy access to
91 the AT_* key-value pairs passed from the Linux kernel. The header also
92 defines the HWCAP_* bits associated with the AT_HWCAP key.
96 * New configure option --enable-systemtap builds SystemTap static probes
97 into libc for setjmp and longjmp and into libpthread for various operations.
98 So far the setjmp/longjmp probes and some of the libpthread probes are
99 provided only for i*86 and x86_64.
100 Implemented by Roland McGrath and Rayson Ho.
102 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
104 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
107 * More optimized functions for SPARC. Implemented by David S. Miller.
109 * Improved support for cross-compilation, especially bootstrap builds
110 without a previously built glibc.
112 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
113 Chris Metcalf from Tilera.
115 * Support for the old ARM ABI has been removed from ports. Only the EABI is
116 now supported for ARM processors.
118 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
119 as the name of the dynamic linker, to distinguish it from the
120 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
122 * Support for CRIS has been removed from ports.
124 * A new class of installed header has been documented for low-level
125 platform-specific functionality. PowerPC added the first instance with a
126 function to provide time base register access. Contributed by Tulio
127 Magno Quites Machado Filho.
129 * ix86 configurations now install header files that are consistent with
130 what x86-64 configurations install. These same header files can be used
131 for -m32, -m64, or -mx32 builds.
132 Contributed by H.J. Lu.
134 * Math library bug fixes. A thorough audit of all open math library bugs was
135 conducted by Joseph Myers. Significant progress was made on many math
136 library bugs resulting in more accurate exceptions and function results.
137 Many thanks to all those that contributed including Andreas Jaeger for his
138 patch review and work on the x87 trigonometric instruction issues.
140 * Timezone data is no longer installed. Timezone-related binaries and scripts
141 will continue to be installed. Users should obtain their timezone data from
142 their distribution provider or from the tzdata package at
143 <ftp://munnari.oz.au/pub/>.
147 * The following bugs are resolved with this release:
149 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
150 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
151 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
152 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
153 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
154 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
155 13484, 13506, 13515, 13523, 13524, 13538, 13540
157 * New program pldd to list loaded object of a process
158 Implemented by Ulrich Drepper.
160 * Add nss_db support back to glibc. No more dependency on Berkeley db
161 and support for initgroups lookups.
162 Implemented by Ulrich Drepper.
164 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
165 Contributed by HJ Lu.
167 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
168 Contributed by HJ Lu.
170 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
171 on x86-32 and x86-64.
172 Contributed by Liubov Dmitrieva.
174 * Optimized strchr and strrchr for SSE on x86-32.
175 Contributed by Liubov Dmitrieva.
177 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
178 for x86-64 and x86-32.
179 Contributed by Liubov Dmitrieva.
181 * New interfaces: scandirat, scandirat64
182 Implemented by Ulrich Drepper.
184 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
185 Implemented by Ulrich Drepper.
187 * nscd now also caches the netgroup database.
188 Implemented by Ulrich Drepper.
190 * Integrate libm with gcc's -ffinite-math-only option.
191 Implemented by Ulrich Drepper.
193 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
194 to math functions. Implemented by Ulrich Drepper.
196 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
197 Implemented by Ulrich Drepper.
199 * New Linux interfaces: process_vm_readv, process_vm_writev
201 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
202 Implemented by Ulrich Drepper.
204 * Optimized nearbyint and strcasecmp for PPC.
205 Implemented by Adhemerval Zanella.
207 * New locales: bho_IN, unm_US, es_CU, ta_LK
211 * The following bugs are resolved with this release:
213 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
214 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
215 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
216 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
217 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
218 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
219 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
220 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
221 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
222 12795, 12811, 12813, 12814, 12841
224 * The RPC implementation in libc is obsoleted. Old programs keep working
225 but new programs cannot be linked with the routines in libc anymore.
226 Programs in need of RPC functionality must be linked against TI-RPC.
227 The TI-RPC implementation is IPv6 enabled and there are other benefits.
229 Visible changes of this change include (obviously) the inability to link
230 programs using RPC functions without referencing the TI-RPC library and the
231 removal of the RPC headers from the glibc headers.
232 Implemented by Ulrich Drepper.
234 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
235 syncfs, setns, sendmmsg
237 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
238 yue_HK, lij_IT, mhr_RU
240 * New encodings: CP770, CP771, CP772, CP773, CP774
242 * New program sotruss to trace calls through PLTs
243 Implemented by Ulrich Drepper.
245 * The malloc hook implementation is marked deprecated and will be removed
246 from the default implementation in the next version. The design never
247 worked ever since the introduction of threads. Even programs which do
248 not create threads themselves can use multiple threads created internally.
252 * The following bugs are resolved with this release:
254 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
255 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
256 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
257 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
260 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
262 * POWER7 optimizations: memset, memcmp, strncmp
264 * New optimized string functions for x86-64: strnlen (SSE2),
265 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
266 Implemented by Ulrich Drepper.
270 * The following bugs are resolved with this release:
272 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
273 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
274 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
275 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
276 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
277 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
278 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
279 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
281 * New interfaces: pthread_getname_np, pthread_setname_np
283 * New Linux interface: recvmmsg
285 * STT_GNU_IFUNC implemented for Sparc by David Miller.
287 * The dynamic linker now recognizes supported ABI versions from the
288 EI_ABIVERSION field in the ELF header.
289 Implemented by Ulrich Drepper.
291 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
292 will not be used to fill in password fields in the passwd.byname replies.
293 Instead it is used to synthesize the shadow.byname table, should it be
294 missing. This is a useful mode in some installations involving Solaris.
295 Implemented by Ulrich Drepper.
297 * New locales: kok_IN, sq_MK, cv_RU
301 * The following bugs are resolved with this release:
303 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
304 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
305 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
306 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
307 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
308 10789, 10817, 10823, 10840, 10847
310 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
312 Implemented by Ulrich Drepper.
314 * Checking version of longjmp added that fails if an uninitialized stack
315 frame would be created. Implemented by Ulrich Drepper.
317 * STT_GNU_IFUNC is now supported in static executables.
318 Implemented by H.J. Lu.
320 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
322 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
323 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
324 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
325 Contributed by H.J. Lu.
327 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
328 Implemented by Ulrich Drepper.
330 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
332 Contributed by H.J. Lu.
334 * Support for fma instruction in AVX on x86-64.
335 Implemented by H.J. Lu and Ulrich Drepper.
337 * AVX support in x86-64 auditing support in ld.so.
338 Implemented by H.J. Lu.
340 * STB_GNU_UNIQUE support added.
341 Implemented by Ulrich Drepper.
343 * Implement second fallback mode for optimized DNS lookup for even more
344 broken environments. If two requests from the same port are not
345 handled correctly close the socket and open a new one before sending
346 the second request. The 'single-request-reopen' option in /etc/resolv.conf
347 can be used to select this mode right away, instead of rediscovering the
348 necessity is every process again.
349 Implemented by Ulrich Drepper.
351 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
352 Implemented by Adam Tkac.
354 * Optimized iconv conversions for S390x.
355 Implemented by Andreas Krebbel.
357 * Using condvars with PI mutexes is now more efficient due to kernel
358 support for requeueing to PI futexes. NPTL support added for x86-64.
359 Implemented by Ulrich Drepper.
361 * New locales: ps_AF, my_MM
365 * The following bugs are resolved with this release:
367 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
368 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
369 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
370 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
371 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
373 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
374 Implemented by Ulrich Drepper.
376 * New Linux interfaces: accept4, fallocate, fallocate64.
377 Implemented by Ulrich Drepper.
379 * Correct declarations of string function when used in C++ code. This
380 could lead to compile errors for invalid C++ code.
382 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
385 * New POSIX 2008 interface: psiginfo
386 Implemented by Ulrich Drepper.
388 * New ISO C++1x interfaces: quick_exit, at_quick_exit
389 Implemented by Ulrich Drepper.
391 * Support for selecting between multiple function definitions at runtime
392 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
394 * The libcrypt library can now use the hash function implementations in
395 NSS. Implemented by Ulrich Drepper.
397 * The malloc implementation can be compiled to be less memory efficient
398 but higher performing in multi-threaded programs.
399 Implemented by Ulrich Drepper.
401 * New locales: nan_TW@latin, ks_IN
403 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
404 Implemented by Ulrich Drepper.
406 * Extended printf hook support. It is possible to use user-defined types
407 and extend existing format specifiers.
408 Implemented by Ulrich Drepper.
410 * Handling for group shadow files has been added.
411 Implemented by Ulrich Drepper.
413 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
414 servers (the case, e.g., for some people using the built-in DNS
415 server in ADSL modems/routers). There is a once-per-process timeout
416 in case of a broken server. To avoid it, users can run nscd or put
417 'options single-request' in /etc/resolv.conf.
418 Implemented by Ulrich Drepper.
422 * The following bugs are resolved with this release:
424 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
425 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
426 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
427 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
428 6968, 6974, 6980, 6995, 7008, 7009, 7029
430 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
431 up at the same time. Implemented by Ulrich Drepper.
433 * TLS descriptors for LD and GD on x86 and x86-64.
434 Implemented by Alexandre Oliva.
436 * getaddrinfo now handles DCCP and UDPlite.
437 Implemented by Ulrich Drepper.
439 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
440 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
441 Implemented by Ulrich Drepper.
443 * New implementation of memmem, strstr, and strcasestr which is O(n).
444 Implemented by Eric Blake.
446 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
448 * Implement "e" option for popen to open file descriptor with the
449 close-on-exec flag set. Implemented by Ulrich Drepper.
451 * Implement "b" mode for fmemopen. In this mode writes writes don't
452 implicitly add a NUL byte and seeks from the end of the buffer really
453 use the buffer end, not the string length as the basis.
454 Implemented by Ulrich Drepper.
456 * Many functions, exported and internal, now atomically set the close-on-exec
457 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
459 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
461 Implemented by Pravin Satpute.
463 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
467 * The following bugs are resolved with this release:
469 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
470 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
471 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
472 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
473 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
474 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
475 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
477 * New locales: bo_CN, bo_IN, shs_CA.
479 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
481 * Sorting rules for some Indian languages (Devanagari and Gujarati).
482 Implemented by Pravin Satpute.
484 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
486 * nscd caches now all timeouts for DNS entries
487 Implemented by Ulrich Drepper.
489 * nscd is more efficient and wakes up less often.
490 Implemented by Ulrich Drepper.
492 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
493 vdprintf, and obstack_vprintf.
494 Implemented by Jakub Jelinek.
496 * Faster memset for x86-64.
497 Implemented by Harsha Jagasia and H.J. Lu.
499 * Faster memcpy on x86.
500 Implemented by Ulrich Drepper.
502 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
503 Implemented by Ulrich Drepper.
505 * Faster sqrt and sqrtf implemention for some PPC variants.
506 Implemented by Steven Munroe.
510 * The following bugs are resolved with this release:
512 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
513 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
514 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
515 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
516 5071, 5103, 5104, 5112, 5113, 5184, 5186
518 * More checking functions: fread, fread_unlocked, open*, mq_open.
519 Implemented by Jakub Jelinek and Ulrich Drepper.
521 * Extend fortification to C++. Implemented by Jakub Jelinek.
523 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
524 by not recognizing 'a' as a modifier when those specs are requested.
525 Implemented by Jakub Jelinek.
527 * PPC optimizations to math and string functions.
528 Implemented by Steven Munroe.
530 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
531 options to be passed. Implemented by Ulrich Drepper.
533 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
535 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
536 Implemented by Ulrich Drepper.
538 * Handle private futexes in the NPTL implementation.
539 Implemented by Jakub Jelinek and Ulrich Drepper.
541 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
542 Implemented by Roland McGrath and Ulrich Drepper.
544 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
546 * SHA-256 and SHA-512 based password encryption.
547 Implemented by Ulrich Drepper.
549 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
550 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
553 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
554 Implemented by Ulrich Drepper.
558 * The following bugs are resolved with this release:
560 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
561 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
562 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
563 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
564 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
565 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
566 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
569 * New Linux interfaces: epoll_pwait, sched_getcpu.
571 * New generic interfaces: strerror_l.
573 * nscd can now cache the services database. Implemented by Ulrich Drepper.
577 * The following bugs are resolved with this release:
579 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
580 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
581 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
582 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
583 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
584 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
585 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
586 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
587 3225, 3251, 3252, 3253, 3273
589 * For Linux, the sorting of addresses returned by getaddrinfo now also
590 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
591 Implemented by Ulrich Drepper.
593 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
594 Implemented by Ulrich Drepper.
596 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
598 * New iconv module for MIK. Contributed by Alexander Shopov.
600 * For sites with broken group and/or passwd database, the auto-propagate
601 option of nscd can prevent creating ID lookup entries from the results
602 of a name lookup and vice versa. This usually is no problem but some
603 site might have problems with the default behavior.
604 Implemented by Ulrich Drepper.
606 * Iterating over entire database in NIS can be slow. With the
607 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
608 to trade time for memory. The entire database will be read at once.
609 Implemented by Ulrich Drepper.
611 * The interfaces introduced in RFC 3542 have been implemented by
614 * Support for the new ELF hash table format was added by Ulrich Drepper.
616 * Support for priority inheritance mutexes added by Jakub Jelinek and
619 * Support for priority protected mutexes added by Jakub Jelinek.
621 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
622 or_IN, csb_PL, fy_NL, sr_ME.
626 * More overflow detection functions.
628 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
629 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
631 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
632 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
633 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
634 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
635 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
636 by Masahide Washizawa.
638 * It is now possible to install audit libraries for the dynamic linker using
639 LD_AUDIT. Implemented by Ulrich Drepper.
641 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
642 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
643 For a libc and libpthread that works well on Linux 2.4 kernels, we
644 recommend using the stable 2.3 branch.
646 * The new function open_wmemstream acts like open_memstream,
647 but uses a wchar_t wide character buffer.
649 * The new function ppoll is an improved version of poll, similar to pselect.
651 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
652 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
653 renameat, unlinkat, linkat, symlinkat, readlinkat.
655 * New Linux kernel system calls: unshare,
656 inotify_init, inotify_add_watch, inotify_rm_watch.
658 * The euidaccess function is now also known by the alias eaccess,
659 for compatibility with some other systems.
661 * Timezone data updated to 2006b version.
665 * The following bugs are resolved with this release:
667 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
668 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
669 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
670 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
671 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
672 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
674 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
676 * As of this release, GCC 4 can be used to compile the C Library.
678 * Timezone data updated to 2005m version.
682 * The following bugs are resolved with this release:
684 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
685 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
686 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
687 777, 787, 821, 822, 823, 825
689 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
693 * Support for RFC 3678. Real implementations exist only for Linux so far.
694 Implemented by Ulrich Drepper.
696 * nscd can now cache entries persistently. Expiring entries are reloaded.
697 For speedups the cache can be shared in memory with client processes.
698 Implemented by Ulrich Drepper.
700 * nscd can now perform SELinux checks.
701 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
703 * getaddrinfo queries are now cached. Canonical name lookup is performed
705 Implemented by Ulrich Drepper.
707 * The nothrow function attribute is used when headers are used by gcc when
708 compiling C code. This can avoid significant amounts of exception
711 * The malloc functions perform more error checking and are stricter when
712 it comes to reacting on errors. The default action is to terminate
713 the process after showing an error message. Implemented by Ulrich Drepper.
715 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
716 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
718 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
719 namespaces using the new function dlmopen(). This feature is of course,
720 like most other dynamic loading functionality, not available in statically
721 linked applications. Implemented by Ulrich Drepper.
723 * Low-overhead boundary checking variants of string and some stdio functions
724 were added. These are to be used in conjunction with a gcc patch by
725 Jakub Jelinek which adds calls to these functions if possible.
726 Implemented by Jakub Jelinek and Ulrich Drepper.
728 * Old code for several operating systems and machine architectures that
729 have not been in working condition in a long time have been removed from
730 the main source tree maintained by the GNU C Library's maintainers.
731 These files are now reside in the separate `ports' source module
732 that is usable as an add-on when building the library.
736 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
737 interrogate the dynamic linker, compatible with the Solaris interface.
739 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
740 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
742 * getifaddrs now uses the netlink interface on Linux to get its information.
743 Implemented by Thorsten Kukuk.
745 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
746 Implemented by Ulrich Drepper.
748 * support for non-executable stacks on x86 has been added. Changes mostly
751 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
754 * getaddrinfo now performs destination address selection according to
759 * Thread-safe interfaces for many functions that access locale data
760 were added in version 2.3, but these features were omitted from NEWS.
761 Many functions have variants with an `_l' suffix that take a `locale_t'
762 object as a parameter rather than consulting the current locale.
763 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
764 create and maintain `locale_t' objects. Additionally, the new function
765 `uselocale' sets "the current locale" (as used by functions not so
766 parameterized) set for an individual thread. These features were added
767 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
769 * The functions getresuid, getresgid, setresuid, and setresgid, which
770 have long been available on Linux, are now declared in <unistd.h>
771 and are now also available on the Hurd.
773 * ELF thread-local storage support (TLS) now works on x86-64.
775 * The new dynamic string token $LIB is expanded in shared library names.
776 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
778 * Aldy Hernandez contributed complete software floating point support for
779 PowerPC machines with no FPU.
781 * fexecve is implemented on Linux.
783 * The `btowc' function should work at least twice as fast due to
784 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
786 * With approriate thread add-ons cancelable functions are now implemented
787 in libc.so as well. No need to call the function in libpthread. This
788 change allowed to finally disable the incorrect and expensive handling
789 of weak definition in ld.so.
791 * Yet more PLT entries in libc.so have been removed. We finally arrived
792 at the bare minimum. Startup times improved appropriately.
794 * Support for the new Linux/x86 system call interface was added. The
795 AT_SYSINFO auxiliary vector entry is recognized and handled.
799 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
802 * iconv (the program and the interface) now accepts empty names (excluding
803 options like //TRANSLIT) to mean "use charset of current locale".
805 * localedef can now transliterate characters in strings which are not in
806 the provided charmap. The information from the input locale is used.
808 * Prelinking support was added for ELF targets. This requires additional
809 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
811 * Read-only stdio streams now use mmap to speed up operation by eliminating
812 copying and buffer underflows. To use add 'm' to the mode string of
813 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
815 * The malloc functions were completely rewritten by Wolfram Gloger based
816 on Doug Lea's malloc-2.7.0.c.
818 * Isamu Hasegawa contributed a completely new and POSIX-conformant
819 implementation of regex.
821 * Bruno Haible upgraded the iconv and locale implementation to support
824 * Contents of the LC_* and LANG environment variables in the CEN style are
825 not recognized anymore. It never was used. Change by Ulrich Drepper.
827 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
828 thread-local storage (TLS) ABI on some platforms.
829 Changes by Ulrich Drepper. SH support by Kaz Kojima.
831 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
832 EUC-JISX0213, and TSCII.
834 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
835 BSD-compatible interface for getting all network interface addresses.
836 Implementation for IPv4 by Roland McGrath.
838 * Loading of locale data is faster due to the introduction of a locale
839 archive. Implemented by Roland McGrath and Ulrich Drepper.
841 * Startup times are significantly reduced by not using exported functions
842 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
845 * Steven Munroe contributed a port to PowerPC64/Linux.
849 * The Hurd now uses the GNU libio implementation of stdio rather than the
850 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
852 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
853 with the same behavior as the Linux system call of the same name.
857 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
858 128-bit long double format.
860 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
861 IBM1161, and IBM1162 charsets.
863 * Andreas Jaeger contributed a port to x86-64/Linux.
865 * Peter Bruin contributed a port to PowerPC/Hurd.
867 * libc functions using I/O streams now can handle wide-oriented streams
870 * optimizations in the dynamic linker. Binaries created by recent binutils
871 versions start up quicker due to reduced time spent on relocations.
873 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
877 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
878 asinh, atanh, j0 for the 128-bit long double format.
880 * Bruno Haible updated all the code handling Unicode in some form to
883 * Speed of regex for single-byte locales is back to previous levels.
884 Patch by Isamu Hasegawa.
886 * Alpha, SPARC, and IA-64 now also using floating stacks.
888 * Startup time of internationalized applications greatly improved through
889 iconv cache. Use iconvconfig to generate the cache file.
890 Contributed by Ulrich Drepper.
892 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
893 severe performance problems. Patch by David Mosberger.
895 * The Hurd port got a lot more functionality like AIO, various stdio
896 extensions, etc. Mainly done by Roland McGrath.
898 * mtrace can now lookup symbols in shared libraries.
902 * Intel's IA-64 math library is largely integrated. It provides fast and
903 accurate implementatations for most basic and standard math functions
904 in float, double, and long double format.
906 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
907 and asin for the 96-bit long double format and asin, log, tan for the
908 128-bit long double format.
910 * The beginning of a last-bit accurate math library by IBM Haifa were added.
911 The basic double functions exist today. Contributed by Abraham Ziv
912 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
913 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
915 * An asynchronous name lookup library was added. The interface is designed
916 after POSIX AIO. The proposal was circulated beforehand to get comments.
917 No negative ones came in. Implemented by Ulrich Drepper.
919 * Port to S390/64bit contributed by Martin Schwidefsky
920 <schwidefsky@de.ibm.com>.
922 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
923 of functions for Linux/IA-64.
925 * The RPC code is now thread safe. Threads can now use the same service
926 of different services at the same time. Patch by Eric Norum
927 <eric.norum@usask.ca> with some help by Ulrich Drepper.
929 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
930 family of functions for Linux/S390.
932 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
933 of functions for Linux/x86.
935 * Port to Linux/CRIS contributed by Axis Communications.
939 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
940 we can now check for namespace violations and missing declarations. The
941 result is that almost all headers are now Unix-compliant (as defined in
942 the upcoming XPG6). The negative side is that some programs might need
943 corrections, too, if they depend on the incorrect form of the headers in
944 previous versions which defined too many symbols and included too many
947 * regex now handles multibyte character sets correctly.
948 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
950 * iconv (the program) does now conform to the upcoming XPG6 and handles
951 charmaps. Instead of the charset names the path of charmaps can be
952 provided and the conversion happens based on this data.
953 Contributed by Ulrich Drepper.
955 * The locale program now provides detailed information about the installed
960 only lists the names of the supported locales
964 provides details such as country, language, and codeset name.
965 Contributed by Ulrich Drepper.
969 * The gencat program now parses the input file according to the charset
970 selected by the LC_CTYPE category. This is important for stateful
971 character sets. To make generating catalogs easier there is a way
972 to overwrite the charset selected by the locale: before the first
973 message or $ quote line the catalog can contain a line like
977 to select the charset (ISO-8859-2 in this case).
979 Implemented by Shinya Hanataka and Ulrich Drepper.
981 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
982 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
983 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
985 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
986 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
988 * The LANGUAGE environment variable is now ignored unless the locale is
989 changed from the default "C" locale.
991 * The usual bug fixes.
995 * Greg McGary added runtime support for bounds checking using gcc's
996 new -fbounded-pointers option. ix86 target is complete. PowerPC
999 * Thorsten Kukuk added secure mode support to nscd.
1001 * The Berkeley db libraries have been removed.
1003 Related, the nss_db module is now in a separate package since it
1004 obviously requires a database library being available.
1006 * Wide character I/O streams implemented by Ulrich Drepper.
1008 * Functions from the extended socket API added by Ulrich Drepper.
1010 * Functions feenableexcept and fedisableexcept to control the
1011 behaviour of individual exceptions have been added by Andreas Jaeger.
1013 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1015 * The resolver code has been updated from bind 8.2.3-T5B which supports
1016 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1019 This change could in some situations effect backward compatibility. Since
1020 now `_res' is a thread-local instead of a global variable, modifying it
1021 in one thread does not have any effect in other threads.
1023 The resolver library was also extended to allow IPv6 as the transport
1024 protocol for the requests. This work was done by Stig Venaas.
1026 * Compatibility code for K&R C compilers has been removed from the
1027 header files. A ISO C compiler is needed to use the library
1028 (conforming to either C89 or C99 standard).
1030 * Complete rewrite of the localedef program to support multibyte character
1031 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1032 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1033 Implemented by Ulrich Drepper.
1035 Bruno Haible significantly improved the generation and use of the data
1036 structures for the wide character tables.
1038 * Plural handling in gettext implemented by Ulrich Drepper.
1040 * The utmp daemon has been removed.
1042 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1044 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1047 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1049 * POSIX barriers implemented by Kaz Kylheku.
1051 * POSIX spawn function family implemented by Ulrich Drepper.
1053 * POSIX spinlocks are now available.
1055 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1057 * the configure option --enable-kernel=X.Y.Z allows to strip out
1058 compatibility for kernel versions before X.Y.Z. This is currently only
1059 implemented for Linux.
1061 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1062 field sin6_scope_id. This means that all programs using IPv6 should be
1063 recompiled. Don't expect binary compatibility with previous glibc
1066 * various conversion modules for IBM character sets contributed by
1069 * IA-64 port by Jes Sorensen and HJ Lu.
1083 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1085 * New xdr functions are added; some rpc functions are now 64bit clean.
1087 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1089 * Fixed known incompatibilities with glibc 2.0.
1091 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1093 * Optimized a number of functions (especially the ELF dynamic loader).
1095 * Update timezone data files.
1097 * lots of charmaps corrections
1099 * some new locale definitions and charmaps
1104 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1105 conform to POSIX member type requirements. Symbol versions have been
1106 adjusted as needed within the library, and for direct use by applications,
1107 but there is potential for problems if third-party libraries use
1108 struct timeval as part of their interface. This does not present
1109 a problem for X and other "essential" system libraries.
1111 * An additional locale model to support C++ Standard Library locale
1112 model and probably more was implemented by Ulrich Drepper.
1114 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1117 * Miles Bader provided the `argp' function family to support hierachical
1118 command line argument parsing, layered on top of getopt.
1120 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1122 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1125 * scanf recognizes the %a and %A format for scanning floating point numbers.
1127 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1128 information and interfaces for the available integer types.
1130 * about 130 new math functions were added to implement the ISO C9x math
1133 * the new header <complex.h> contains definitions of the complex math
1134 functions from ISO C 9X.
1136 * the new header <tgmath.h> defines generic macros to use complex or
1137 real valued functions.
1139 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1141 * Andreas Jaeger provided a test suite for the math library.
1143 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1145 * Ulrich Drepper added character set conversion functions (iconv).
1147 * Optimized string functions have been added.
1149 * The localedata addon is now part of glibc.
1151 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1153 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1154 daemon for NSS (nscd).
1156 Missing a better place here are some numbers on improvements. Under
1157 Linux 2.1.125 un-tar-ing the kernel sources takes
1161 using local files 12.19s 6.88s 22.91s
1163 using NIS 13.92s 8.91s 26.34s
1165 using NIS & nscd 10.37s 7.34s 25.30s
1167 using NIS+ 27.57s 30.37s 640.46s
1169 using NIS+ & nscd 10.25s 7.83s 26.51s
1171 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1173 Keep in mind that non-namelookup related operations dominate above times.
1174 It was just a common complain that using NIS+ unpacking the kernel is
1177 [1] The old nscd implementation is not available anymore since it was
1178 distributed with glibc up to version 2.0.98 and thus is now replaced.
1180 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1182 * Mark Kettenis provided a Hesiod NSS module.
1184 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1185 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1187 * rcmd can now handle netgroups (Dick Streefland).
1189 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1192 * Support for the IPv6 protocol has been added to the socket API, as per the
1193 latest draft standards.
1195 * Support for Linux 2.2 has been added.
1197 * Interface changes relative to the latest 2.0.x release:
1198 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1199 addseverity NEW: Unix98
1200 alphasort64 NEW: LFS
1201 argp_err_exit_status NEW: argp, GNU ext
1202 argp_error NEW: argp, GNU ext
1203 argp_failure NEW: argp, GNU ext
1204 argp_help NEW: argp, GNU ext
1205 argp_parse NEW: argp, GNU ext
1206 argp_program_bug_address NEW: argp, GNU ext
1207 argp_program_version NEW: argp, GNU ext
1208 argp_program_version_hook NEW: argp, GNU ext
1209 argp_state_help NEW: argp, GNU ext
1210 argp_usage NEW: argp, GNU ext
1211 authdes_create NEW: Secure RPC
1212 authdes_getucred NEW: Secure RPC
1213 authdes_pk_create NEW: Secure RPC
1214 backtrace NEW: GNU ext.
1215 backtrace_symbols NEW: GNU ext.
1216 backtrace_symbols_fd NEW: GNU ext.
1218 cacosf NEW: ISO C 9x
1219 cacosh NEW: ISO C 9x
1220 cacoshf NEW: ISO C 9x
1221 cacoshl NEW: ISO C 9x
1222 cacosl NEW: ISO C 9x
1229 casinf NEW: ISO C 9x
1230 casinh NEW: ISO C 9x
1231 casinhf NEW: ISO C 9x
1232 casinhl NEW: ISO C 9x
1233 casinl NEW: ISO C 9x
1235 catanf NEW: ISO C 9x
1236 catanh NEW: ISO C 9x
1237 catanhf NEW: ISO C 9x
1238 catanhl NEW: ISO C 9x
1239 catanl NEW: ISO C 9x
1240 cbc_crypt NEW: Secure RPC
1244 ccoshf NEW: ISO C 9x
1245 ccoshl NEW: ISO C 9x
1251 cimagf NEW: ISO C 9x
1252 cimagl NEW: ISO C 9x
1253 clearerr_locked REMOVED
1254 clntunix_create NEW: sunrpc ext
1256 clog10 NEW: ISO C 9x
1257 clog10f NEW: ISO C 9x
1258 clog10l NEW: ISO C 9x
1268 cprojf NEW: ISO C 9x
1269 cprojl NEW: ISO C 9x
1271 crealf NEW: ISO C 9x
1272 creall NEW: ISO C 9x
1277 csinhf NEW: ISO C 9x
1278 csinhl NEW: ISO C 9x
1281 csqrtf NEW: ISO C 9x
1282 csqrtl NEW: ISO C 9x
1286 ctanhf NEW: ISO C 9x
1287 ctanhl NEW: ISO C 9x
1289 des_setparity NEW: Secure RPC
1290 ecb_crypt NEW: Secure RPC
1291 endutxent NEW: Unix98
1293 exp10f NEW: ISO C 9x
1294 exp10l NEW: ISO C 9x
1298 fattach NEW: STREAMS
1299 fdetach NEW: STREAMS
1303 feclearexcept NEW: ISO C 9x
1304 fegetenv NEW: ISO C 9x
1305 fegetexceptflag NEW: ISO C 9x
1306 fegetround NEW: ISO C 9x
1307 feholdexcept NEW: ISO C 9x
1309 feraiseexcept NEW: ISO C 9x
1310 ferror_locked REMOVED
1311 fesetenv NEW: ISO C 9x
1312 fesetexceptflag NEW: ISO C 9x
1313 fesetround NEW: ISO C 9x
1314 fetestexcept NEW: ISO C 9x
1315 feupdateenv NEW: ISO C 9x
1316 fflush_locked REMOVED
1320 fgets_unlocked NEW: GNU ext.
1321 fileno_locked REMOVED
1333 fputc_locked REMOVED
1334 fputs_unlocked NEW: GNU ext.
1335 fread_unlocked NEW: GNU ext.
1340 fstatvfs NEW: Unix98
1344 ftruncate64 NEW: LFS
1346 fwrite_unlocked NEW: GNU ext.
1347 gai_strerror NEW: IPv6
1351 getchar_locked REMOVED
1353 getdate_err NEW: Unix98
1354 getdate_r NEW: GNU ext.
1356 getnameinfo NEW: IPv6
1357 getnetname NEW: Secure RPC
1358 getpmsg NEW: STREAMS
1359 getpt NEW: Unix98 PTY
1360 getrlimit64 NEW: LFS
1361 getutxent NEW: Unix98
1362 getutxid NEW: Unix98
1363 getutxline NEW: Unix98
1364 glob64 NEW: GNU ext.
1365 globfree64 NEW: GNU ext.
1366 gnu_get_libc_release NEW: GNU ext.
1367 gnu_get_libc_version NEW: GNU ext.
1368 grantpt NEW: Unix98 PTY
1369 host2netname NEW: Secure RPC
1371 iconv_close NEW: iconv
1372 iconv_open NEW: iconv
1373 if_freenameindex NEW: IPv6
1374 if_indextoname NEW: IPv6
1375 if_nameindex NEW: IPv6
1376 if_nametoindex NEW: IPv6
1377 in6addr_any NEW: IPv6
1378 in6addr_loopback NEW: IPv6
1379 inet6_isipv4mapped NEW: IPv6
1380 isastream NEW: STREAMS
1381 iswblank NEW: GNU ext.
1382 key_decryptsession NEW: Secure RPC
1383 key_decryptsession_pk NEW: Secure RPC
1384 key_encryptsession NEW: Secure RPC
1385 key_encryptsession_pk NEW: Secure RPC
1386 key_gendes NEW: Secure RPC
1387 key_get_conv NEW: Secure RPC
1388 key_secretkey_is_set NEW: Secure RPC
1389 key_setnet NEW: Secure RPC
1390 key_setsecret NEW: Secure RPC
1391 llrint NEW: ISO C 9x
1392 llrintf NEW: ISO C 9x
1393 llrintl NEW: ISO C 9x
1394 llround NEW: ISO C 9x
1395 llroundf NEW: ISO C 9x
1396 llroundl NEW: ISO C 9x
1401 lrintf NEW: ISO C 9x
1402 lrintl NEW: ISO C 9x
1403 lround NEW: ISO C 9x
1404 lroundf NEW: ISO C 9x
1405 lroundl NEW: ISO C 9x
1407 makecontext NEW: Unix98
1408 mempcpy NEW: GNU ext.
1411 modify_ldt NEW: kernel
1415 nearbyint NEW: ISO C 9x
1416 nearbyintf NEW: ISO C 9x
1417 nearbyintl NEW: ISO C 9x
1418 netname2host NEW: Secure RPC
1419 netname2user NEW: Secure RPC
1420 nexttoward NEW: ISO C 9x
1421 nexttowardf NEW: ISO C 9x
1422 nexttowardl NEW: ISO C 9x
1426 passwd2des NEW: Secure RPC
1428 pow10f NEW: GNU ext.
1429 pow10l NEW: GNU ext.
1432 printf_size NEW: GNU ext.
1433 printf_size_info NEW: GNU ext.
1434 profil_counter REMOVED
1435 pthread_mutexattr_getkind_np REPLACED
1436 pthread_mutexattr_setkind_np REPLACED
1437 ptsname NEW: Unix98 PTY
1438 ptsname_r NEW: Unix98 PTY
1440 putchar_locked REMOVED
1441 putgrent NEW: GNU ext.
1443 putpmsg NEW: STREAMS
1444 pututxline NEW: Unix98
1448 readdir64_r NEW: LFS
1449 remquo NEW: ISO C 9x
1450 remquof NEW: ISO C 9x
1451 remquol NEW: ISO C 9x
1453 roundf NEW: ISO C 9x
1454 roundl NEW: ISO C 9x
1456 scalbln NEW: ISO C 9x
1457 scalblnf NEW: ISO C 9x
1458 scalblnl NEW: ISO C 9x
1460 sendfile NEW: kernel
1461 setcontext NEW: Unix98
1462 setrlimit64 NEW: LFS
1463 setutxent NEW: Unix98
1465 sigignore NEW: Unix98
1466 sigqueue NEW: POSIX.1b
1467 sigrelse NEW: Unix98
1468 sigset NEW: POSIX.1b
1469 sigtimedwait NEW: POSIX.1b
1470 sigwaitinfo NEW: POSIX.1b
1471 sincos NEW: GNU ext.
1472 sincosf NEW: GNU ext.
1473 sincosl NEW: GNU ext.
1477 strcasestr NEW: GNU ext.
1478 strtoimax NEW: ISO C 9x
1479 strtoumax NEW: ISO C 9x
1480 strverscmp NEW: GNU ext.
1481 svcauthdes_stats NEW: Secure RPC
1482 svcunix_create NEW: sunrpc etx
1483 svcunixfd_create NEW: sunrpc ext
1484 swapcontext NEW: Unix98
1485 tcgetsid NEW: Unix98 PTY
1486 tdestroy NEW: GNU ext.
1487 tgamma NEW: ISO C 9x
1488 tgammaf NEW: ISO C 9x
1489 tgammal NEW: ISO C 9x
1493 truncf NEW: ISO C 9x
1494 truncl NEW: ISO C 9x
1496 unlockpt NEW: Unix98 PTY
1497 updwtmpx NEW: Unix98
1498 user2netname NEW: Secure RPC
1499 utmpxname NEW: Unix98
1500 versionsort NEW: GNU ext.
1501 versionsort64 NEW: GNU ext.
1503 wcscasecmp NEW: GNU ext.
1504 wcsncasecmp NEW: GNU ext.
1505 wcsnlen NEW: GNU ext.
1506 wcstoimax NEW: ISO C 9x
1507 wcstoll NEW: ISO C 9x
1508 wcstoull NEW: ISO C 9x
1509 wcstoumax NEW: ISO C 9x
1511 wordexp NEW: POSIX.2
1512 wordfree NEW: POSIX.2
1513 write_profiling REMOVED
1514 xdecrypt NEW: Secure RPC
1515 xdr_authdes_cred NEW: Secure RPC
1516 xdr_authdes_verf NEW: Secure RPC
1517 xdr_cryptkeyarg NEW: Secure RPC
1518 xdr_cryptkeyarg2 NEW: Secure RPC
1519 xdr_cryptkeyres NEW: Secure RPC
1520 xdr_getcredres NEW: Secure RPC
1521 xdr_key_netstarg NEW: Secure RPC
1522 xdr_key_netstres NEW: Secure RPC
1523 xdr_keybuf NEW: Secure RPC
1524 xdr_keystatus NEW: Secure RPC
1525 xdr_netnamestr NEW: Secure RPC
1526 xdr_sizeof NEW: Secure RPC
1527 xdr_unixcred NEW: sunrpc ext
1528 xencrypt NEW: Secure RPC
1529 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1540 * inet_ntoa is thread-safe
1542 * updwtmp is moved from libutil to libc
1544 * rewrite of cbrt function
1546 * update of timezone data
1560 * add atoll function
1562 * fix complex problems in Berkeley DB code
1564 * fix math functions
1568 * fixed lots of header problems (especially Linux/GNU specific)
1570 * dynamic loader preserves all registers
1572 * Roland McGrath provided support for handling of auxiliary objects in
1573 the ELF dynamic loader.
1575 * support for parallel builds is improved
1579 * GNU extensions are no longer declared by default. To enable them you
1580 must define the macro `_GNU_SOURCE' in your program or compile with
1583 * The library has changed from using GNU ld symbol aliases to using weak
1584 symbols where available. The ELF object file format supports weak
1585 symbols; GNU ld also supports weak symbols in the a.out format. (There
1586 is also now support for other GNU ld extensions in ELF. Use the
1587 `--with-elf' option to configure to indicate you have ELF, and
1588 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1589 of many files which contained only symbol aliases, reducing the size of
1590 the source and the compiled library; many other files were renamed to
1591 less cryptic names previously occupied by the symbol alias files.
1592 There is a new header file <elf.h> for programs which operate on
1593 files in the ELF format.
1595 * Converted to Autoconf version 2, so `configure' has more options.
1596 Run `configure --help' to see the details.
1598 * The library can now be configured to build profiling, highly-optimized
1599 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1600 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1601 `configure' enable building these extra libraries. The shared library is
1602 built by default when using both ELF and GNU ld. When shared libraries
1603 are enabled, the new library `-ldl' is available for arbitrary run-time
1604 loading of shared objects; its interface is defined in <dlfcn.h>. The
1605 new header file <link.h> gives access to the internals of the run-time
1606 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1607 application of same name on other systems and it provides information
1608 about dynamically linked binaries.
1610 * The C library now provides the run-time support code for profiling
1611 executables compiled with `-pg'. Programs can control the profiling code
1612 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1613 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1614 the support for this file format was contributed by David Mosberger-Tang.
1616 * The math code has been replaced with a math library based on fdlibm from
1617 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1618 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1619 functions. The math functions now reside in a separate library, so
1620 programs using them will need to use `-lm' their linking commands.
1622 * John C. Bowman contributed optimized ix87 assembler inline functions.
1624 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1625 mechanism similar to that found in Solaris 2. This is now used for the
1626 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1627 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1628 file controls what services are used for each individual database. This
1629 works by loading shared libraries with names specified in `nsswitch.conf',
1630 so service modules can be changed or added at any time without even
1631 relinking any program. Currently there are the file, db, and NIS based
1632 NSS services available.
1634 * The new functions `strtoq' and `strtouq' parse integer values from
1635 strings, like `strtol' and `strtoul', but they return `long long int' and
1636 `unsigned long long int' values, respectively (64-bit quantities).
1638 * The new functions `strtof' and `strtold' parse floating-point values from
1639 strings, like `strtod', but they return `float' and `long double' values,
1640 respectively (on some machines `double' and `long double' are the same).
1642 * Ulrich Drepper has contributed new implementations of the floating-point
1643 printing and reading code used in the `printf' family of functions and
1644 `strtod', `strtof', and `strtold'. These new functions are perfectly
1645 accurate, and much faster than the old ones.
1647 * The implementation of the POSIX locale model was completely rewritten by
1648 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1649 to compile the POSIX locale definition.
1651 * The former dummy implementations of the strcoll and strxfrm function are
1652 now replaced by fully functional code contributed by Ulrich Drepper. The
1653 collation information comes from the POSIX locale definitions.
1655 * The new header <langinfo.h> defines an interface for accessing
1656 various locale-dependent data (using the locale chosen with `setlocale').
1658 * Ulrich Drepper has contributed a new suite of functions for operation on
1659 wide-character and multibyte-character strings, in <wchar.h>;
1660 and classification and case conversion of wide characters, in <wctype.h>.
1661 These new functions are conforming to the ISO C, Amendement 1 specification.
1663 * There is now a second implementation of the standard I/O library available.
1664 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1665 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1667 * You can now use positional parameter specifications in format strings
1668 for the `printf' and `scanf' families of functions. For example,
1669 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1670 ``Number 6, Mr Jones''. This is mainly useful when providing different
1671 format strings for different languages, whose grammars may dictate
1672 different orderings of the values being printed. To support this
1673 feature, the interface for `register_printf_handler' has changed; see
1674 the header file <printf.h> for details.
1676 * The `printf' and `scanf' families of functions now understand a new
1677 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1678 to group numbers as indicated by the locale; for `scanf' and friends, this
1679 says to accept as valid only a number with all the proper grouping
1680 separators in the right places. In the default "C" locale, numbers are
1681 not grouped; but locales for specific countries will define the usual
1682 conventions (i.e. separate thousands with `,' in the US locale).
1684 * The pgrp functions have been regularized, slightly incompatibly but much
1685 less confusingly. The core functions are now `getpgid' and `setpgid',
1686 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1687 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1688 provided for compatibility. There is no longer an incompatible `getpgrp'
1689 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1691 * The new header file <fts.h> and suite of functions simplify programs that
1692 operate on directory trees. This code comes from 4.4 BSD.
1694 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1695 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1696 NSS scheme used in glibc.
1698 * There is a new malloc debugging hook `__memalign_hook'.
1700 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1701 `unsigned int' in <sys/types.h>. These are for compatibility only and
1702 their use is discouraged.
1704 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1705 done differently, so that it works even without GNU ld.
1707 * New function `euidaccess' checks allowed access to a file like `access',
1708 but using the effective IDs instead of the real IDs.
1710 * The time zone data files have been updated for the latest and greatest
1711 local time conventions of the countries of the world.
1713 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1716 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1717 for formatting floating-point numbers. They are provided only for
1718 compatibility; new programs should use `sprintf' instead. There are
1719 also equivalent function for the `long double' floating-point type and
1720 all functions also exist in a reentrant form.
1722 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1723 functions for maintaining the login-record files (primarily of use to
1724 system programs such as `login'), and convenient functions for
1725 allocating and initializing a pseudo-terminal (pty) device.
1727 * Ulrich Drepper has contributed new support for System V style
1728 shared memory and IPC on systems that support it.
1730 * Ulrich Drepper has contributed several miscellaneous new functions found
1731 in System V: The `hsearch' family of functions provide an effective
1732 implementation of hash tables; `a64l' and `l64a' provide a very simple
1733 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1736 * Ulrich Drepper has contributed new reentrant counterparts for the
1737 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1739 * Ulrich Drepper has contributed new, highly-optimized versions of several
1740 string functions for the i486/Pentium family of processors.
1742 * Ulrich Drepper has updated the Linux-specific code, based largely
1743 on work done in Hongjiu Lu's version of GNU libc for Linux.
1744 The GNU library now supports Linux versions 2.0.10 and later,
1745 using the ELF object file format (i[3456]86-*-linux).
1747 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1749 * David Mosberger-Tang and Richard Henderson have ported the C library
1750 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1751 dynamic linking support for ELF/Alpha.
1753 * Richard Henderson contributed several Alpha optimized assembler function
1754 for arithmetic and string handling.
1756 * Ulrich Drepper has contributed a new set of message catalog functions to
1757 support multiple languages using the <libintl.h> interface, for use with
1758 his new package GNU gettext. Translation volunteers have contributed
1759 catalogs of the library's messages in Spanish, German, and Korean.
1761 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1762 program and the `catgets' function for reading the catalog files it
1763 creates. (The <libintl.h> interface is preferred; we include the
1764 <nl_types.h> interface using `catgets' only for source compatibility with
1765 programs already written to use it.)
1767 * New header file <values.h> gives SVID-compatible names for <limits.h>
1770 * Various new macros, declarations, and small header files for compatibility
1773 * New function `group_member' is a convenient way to check if a process has
1774 a given effective group ID.
1776 * When using GCC 2.7 and later, the socket functions are now declared in a
1777 special way so that passing an argument of type `struct sockaddr_in *',
1778 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1779 `struct sockaddr *' type, does not generate a type-clash warning.
1781 * New function `error' declared in header file <error.h> is a convenient
1782 function for printing error messages and optionally exiting; this is the
1783 canonical function used in GNU programs. The new functions `err', `warn',
1784 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1785 doing the same thing.
1787 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1788 POSIX.2 `glob' function to do ~ and {...} expansion.
1790 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1791 `clearenv' which is used in POSIX.9 is also available.
1793 * New function `getsid' returns session ID number on systems that support it.
1795 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1796 files <db.h> and <mpool.h> provide a rich set of functions for several
1797 types of simple databases stored in memory and in files, and <ndbm.h> is
1798 an old `ndbm'-compatible interface using the `db' functions. Link with
1799 `-ldb' to get these functions.
1801 * New macro `strdupa' copies a string like `strdup', but uses local stack
1802 space from `alloca' instead of dynamic heap space from `malloc'.
1804 * New function `strnlen' is like `strlen' but searches only a given maximum
1805 number of characters for the null terminator. `stpncpy', `strndup' and
1806 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1809 * New function `statfs' in header <sys/statfs.h>.
1811 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1812 provide convenient functions for operating on blocks of null-terminated
1815 * A new suite of functions in <utmp.h> handle all the details of reading
1816 and writing the utmp file.
1818 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1821 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1822 completely POSIX compliant and also implemented the extended functionality
1823 to handle alternate digit representation and alternate era date formats.
1825 * Ulrich Drepper provided an implementation of the `strptime' function
1826 defined in XPG4.2 which transforms a string into a `struct tm' value.
1828 * Paul Eggert provided the tzselect shell script as part of the timezone
1829 code. The shell script makes it easy to select the correct timezone
1832 * The implementation of the malloc family of functions is completely replaced
1833 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1834 The implementation uses the mmap function (if available) and it is
1835 optimized for the use in multi threaded programs.
1837 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1838 functions. This new functionality is usable by specifying a special
1839 salt string and it is compatible with implementation on *BSD systems.
1841 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1842 `getsubopt' to handle second level command line options, `bsd_signal'
1843 to access BSD style `signal' functionality, the obsolete `regexp' style
1846 * the `lchown' function is available on system which support this
1849 * The implementation of the shadow password handling function was contributed
1852 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1854 * POSIX.1g support was added. The <sys/select.h> header is available,
1855 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1856 implementation of `getaddrinfo'.
1860 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1862 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1863 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1865 * The new function `daemon' from 4.4 BSD is useful for server programs that
1866 want to put themselves in the background.
1868 * Joel Sherrill has contributed support for several standalone boards that
1869 run without an operating system.
1871 * `printf', `scanf' and friends now accept a `q' type modifier for long
1872 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1874 * All of the code taken from BSD (notably most of the math and networking
1875 routines) has been updated from the BSD 4.4-Lite release.
1877 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1879 * The new functions `getdomainname' and `setdomainname' fetch or change the
1880 YP/NIS domain name. These are system calls which exist on systems which
1883 * The time zone data files have been updated for the latest international
1886 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1887 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1891 * The C library now includes support for Sun RPC, from Sun's free
1892 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1893 are included. (There is still no support for YP.)
1895 * Tom Quinn has contributed a port of the C library to SGI machines running
1896 Irix 4 (mips-sgi-irix4).
1898 * The new `lockf' function is a simplified interface to the locking
1899 facilities of `fcntl', included for compatibility.
1901 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1903 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1905 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1908 * The error message printed by `assert' for a failed assertion now includes
1909 the name of the program (if using GNU ld) and the name of the calling
1910 function (with versions of GCC that support this).
1912 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1914 * The library now includes the <sys/mman.h> header file and memory
1915 management functions `mmap', `munmap', `mprotect', `msync', and
1916 `madvise', on systems that support those facilities.
1918 * The interface for `mcheck' has changed slightly: the function called to
1919 abort the program when an allocation inconsistency is detected now takes
1920 an argument that indicates the type of failure. The new function
1921 `mprobe' lets you request a consistency check for a particular block at
1922 any time (checks are normally done only when you call `free' or `realloc'
1925 * It is now possible to easily cross-compile the C library, building on one
1926 system a library to run on another machine and/or operating system. All
1927 you need to do is set the variable `HOST_CC' in `configparms' to the
1928 native compiler for programs to run on the machine you are building on (a
1929 few generator programs are used on Unix systems); set `CC' to the
1932 * The new function `fexecve' (only implemented on the GNU system) executes
1933 a program file given a file descriptor already open on the file.
1937 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1938 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1940 * You can set the variable `libprefix' in `configparms' to specify a prefix
1941 to be prepended to installed library files; this makes it easy to install
1942 the GNU C library to be linked as `-lgnuc' or whatever.
1944 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1945 copies a limited number of characters from a string, and returns the
1946 address of the last character written.
1948 * You no longer need to check for whether the installed `stddef.h' is
1949 compatible with the GNU C library. configure now checks for you.
1951 * You can now define a per-stream `fileno' function to convert the
1952 stream's cookie into an integral file descriptor.
1954 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1955 allocates zero bytes of storage, and returns a unique pointer which
1956 you can pass to `realloc' or `free'. The behavior is undefined if
1957 you dereference this pointer.
1959 * The C library now runs on Sony NEWS m68k machines running either
1960 NewsOS 3 or NewsOS 4.
1962 * The new `syscall' function is a system-dependent primitive function
1963 for invoking system calls. It has the canonical behavior on Unix
1964 systems, including unreliable return values for some calls (such as
1965 `pipe', `fork' and `getppid').
1967 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1968 to `EAGAIN', which is the preferred name. On systems whose kernels
1969 use two distinct codes, the C library now translates EWOULDBLOCK to
1970 EAGAIN in every system call function.
1974 * The GNU C Library Reference Manual is now distributed with the library.
1975 `make dvi' will produce a DVI file of the printed manual.
1976 `make info' will produce Info files that you can read on line using C-h i
1977 in Emacs or the `info' program.
1978 Please send comments on the manual to bug-glibc-manual@gnu.org.
1980 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1982 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1984 * Jason Merrill has contributed a port to the Sequent Symmetry running
1985 Dynix version 3 (i386-sequent-dynix).
1987 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1988 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1990 * New function `memory_warnings' lets you arrange to get warnings when
1991 malloc is running out of memory to allocate, like Emacs gives you.
1993 * The C library now contains the relocating allocator used in Emacs 19 for
1994 its editing buffers. This allocator (ralloc) minimizes allocation
1995 overhead and fragmentation by moving allocated regions around whenever it
1996 needs to. You always refer to a ralloc'd region with a "handle" (a
1997 pointer to a pointer--an object of type `void **').
1999 * There is a new `printf' format: `%m' gives you the string corresponding
2000 to the error code in `errno'.
2002 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2003 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2004 pass, the `a' modifier says to fill in a `char **' you pass with a
2007 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2008 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2009 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2011 * `mkstemp' is a traditional Unix function to atomically create and open a
2012 uniquely-named temporary file.
2016 * The standard location for the file that says what the local timezone is
2017 has changed again. It is now `/usr/local/etc/localtime' (or more
2018 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2020 * The distribution no longer contains any files with names longer than 14
2023 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2024 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2026 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2030 * The configuration process has changed quite a bit. The `configure'
2031 script is now used just like the configuration scripts for other GNU
2032 packages. The `sysdeps' directory hierarchy is much rearranged.
2033 The file `INSTALL' explains the new scheme in detail.
2035 * The header files no longer need to be processed into ANSI C and
2036 traditional C versions. There is just one set of files to install, and
2037 it will work with ANSI or old C compilers (including `gcc -traditional').
2039 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2040 MIPS DECStation running Ultrix 4.
2042 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2043 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2044 made itself into a shared library.
2046 * Yet further improved support for the i386, running 4.3 BSD-like systems
2047 (such as Mach 3 with the Unix single-server), or System V.
2049 * New function `strncasecmp' to do case-insensitive string comparison
2050 with limited length.
2052 * New function `strsep' is a reentrant alternative to `strtok'.
2054 * New functions `scandir' and `alphasort' for searching directories.
2056 * New function `setenv' is a better interface to `putenv'.
2058 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2059 function for traversing a directory tree.
2061 * The GNU obstack package is now also part of the C library.
2062 The new function `open_obstack_stream' creates a stdio stream that
2063 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2064 formatted output directly to an obstack.
2066 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2067 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2069 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2071 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2072 things to your strings.
2074 * There are some new test programs: test-fseek, testmb, and testrand.
2076 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2077 These ports are not finished, but are a good starting place for really
2078 supporting those systems.
2080 * `/etc/localtime' is now the standard location for the file that says what
2081 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2082 This follows the general principle that `/etc' is the place for all local
2083 configuration files.
2085 * The C library header files now use `extern "C"' when used by the C++
2086 compiler, so the C library should now work with C++ code.
2088 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2089 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2092 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2093 function which uses the `merge sort' algorithm, and is said to be
2094 significantly faster than the old GNU `qsort' function. Merge sort is
2095 now the standard `qsort' function. The new algorithm can require a lot
2096 of temporary storage; so, the old sorting function is called when the
2097 required storage is not available.
2099 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2100 provides the Unix `crypt' function, plus some other entry points.
2102 * The code and header files taken from 4.4 BSD have been updated with the
2103 latest files released from Berkeley.
2105 ----------------------------------------------------------------------
2106 Copyright information:
2108 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2110 Permission is granted to anyone to make or distribute verbatim copies
2111 of this document as received, in any medium, provided that the
2112 copyright notice and this permission notice are preserved,
2113 thus giving the recipient permission to redistribute in turn.
2115 Permission is granted to distribute modified versions
2116 of this document, or of portions of it,
2117 under the above conditions, provided also that they
2118 carry prominent notices stating who last changed them.
2121 version-control: never
git://sourceware.org / glibc.git / blob