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 1349, 3479, 5044, 5298, 5400, 6530, 6778, 6808, 9685, 9914, 10014, 10038,
13 10631, 11438, 11607, 12140, 13412, 13542, 13601, 13629, 13679, 13696,
14 13717, 13741, 13939, 13966, 14042, 14047, 14090, 14150, 14151, 14152,
15 14154, 14157, 14166, 14173, 14195, 14237, 14251, 14252, 14283, 14298,
16 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14376, 14417,
17 14459, 14476, 14477, 14505, 14510, 14516, 14518, 14519, 14530, 14532,
18 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576, 14579, 14583,
19 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648, 14652, 14660,
20 14661, 14669, 14683, 14694, 14716, 14743, 14767, 14783, 14784, 14785.
22 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
23 Optimized versions of memcpy, memset, and memcmp added for System z10 and
25 Implemented by Andreas Krebbel.
27 * The new function secure_getenv allows secure access to the environment,
28 returning NULL if running in a SUID/SGID process. This function replaces
29 the internal function __secure_getenv.
31 * SystemTap static probes have been added into the dynamic linker.
32 Implemented by Gary Benson.
34 * Optimizations of string functions strstr, strcasestr and memmem.
35 Implemented by Maxim Kuvyrkov.
37 * The minimum Linux kernel version that this version of the GNU C Library
38 can be used with is 2.6.16.
40 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
41 powerpc POWER7. Implemented by Will Schmidt.
43 * New configure option --disable-nscd builds the C library such that it
44 never attempts to contact the Name Service Caching Daemon (nscd).
45 New configure option --disable-build-nscd avoids building nscd itself;
46 this is the default if --disable-nscd is used.
48 * The ttyname and ttyname_r functions on Linux now fall back to searching for
49 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
50 allows creation of chroots without the procfs mounted on /proc.
52 * The `crypt' function now fails if passed salt bytes that violate the
53 specification for those values. On Linux, the `crypt' function will
54 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
55 enabled, and fail on encrypted strings using the MD5 or DES algorithm
56 when the mode is enabled.
58 * The `clock_*' suite of functions (declared in <time.h>) is now available
59 directly in the main C library. Previously it was necessary to link with
60 -lrt to use these functions. This change has the effect that a
61 single-threaded program that uses a function such as `clock_gettime' (and
62 is not linked with -lrt) will no longer implicitly load the pthreads
63 library at runtime and so will not suffer the overheads associated with
64 multi-thread support in other code such as the C++ runtime library.
68 * The following bugs are resolved with this release:
70 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
71 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
72 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
73 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
74 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
75 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
76 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
77 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
78 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
79 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
80 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
81 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
82 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
83 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
84 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
85 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
86 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
87 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
88 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
89 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
90 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
91 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
94 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
95 configuring glibc with:
96 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
97 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
98 Implemented by H.J. Lu.
102 + define static_assert
104 + do not declare gets
106 + declare at_quick_exit and quick_exit also for ISO C11
108 + aligned_alloc. NB: The code is deliberately allows the size parameter
109 to not be a multiple of the alignment. This is a moronic requirement
110 in the standard but it is only a requirement on the caller, not the
115 + uchar.h support added
117 + CMPLX, CMPLXF, CMPLXL added
119 Implemented by Ulrich Drepper.
121 * Support for the IA-64 has been moved to ports.
123 * Remove support for anything but ELF binary format
125 * Checking versions of poll, ppoll added.
126 Implemented by Ulrich Drepper.
128 * More generic and 64-bit performance optimizations to math functions.
129 Implemented by Ulrich Drepper.
131 * New configure option --enable-obsolete-rpc makes the deprecated RPC
132 headers and functions available at compile time as they were before
133 version 2.14. This option will be removed at some time in the future
134 after the TI-RPC library becomes fully sufficient for the needs of
135 existing applications.
137 * Compatibility code for Linux kernel versions before 2.4 has been removed.
138 Note that glibc is not expected to work with any Linux kernel version
141 * New header <sys/auxv.h> and function getauxval allowing easy access to
142 the AT_* key-value pairs passed from the Linux kernel. The header also
143 defines the HWCAP_* bits associated with the AT_HWCAP key.
145 * New locales: mag_IN
147 * New configure option --enable-systemtap builds SystemTap static probes
148 into libc for setjmp and longjmp and into libpthread for various operations.
149 So far the setjmp/longjmp probes and some of the libpthread probes are
150 provided only for i*86 and x86_64.
151 Implemented by Roland McGrath and Rayson Ho.
153 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
155 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
158 * More optimized functions for SPARC. Implemented by David S. Miller.
160 * Improved support for cross-compilation, especially bootstrap builds
161 without a previously built glibc.
163 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
164 Chris Metcalf from Tilera.
166 * Support for the old ARM ABI has been removed from ports. Only the EABI is
167 now supported for ARM processors.
169 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
170 as the name of the dynamic linker, to distinguish it from the
171 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
173 * Support for CRIS has been removed from ports.
175 * A new class of installed header has been documented for low-level
176 platform-specific functionality. PowerPC added the first instance with a
177 function to provide time base register access. Contributed by Tulio
178 Magno Quites Machado Filho.
180 * ix86 configurations now install header files that are consistent with
181 what x86-64 configurations install. These same header files can be used
182 for -m32, -m64, or -mx32 builds.
183 Contributed by H.J. Lu.
185 * Math library bug fixes. A thorough audit of all open math library bugs was
186 conducted by Joseph Myers. Significant progress was made on many math
187 library bugs resulting in more accurate exceptions and function results.
188 Many thanks to all those that contributed including Andreas Jaeger for his
189 patch review and work on the x87 trigonometric instruction issues.
191 * Timezone data is no longer installed. Timezone-related binaries and scripts
192 will continue to be installed. Users should obtain their timezone data from
193 their distribution provider or from the tzdata package at
194 <ftp://munnari.oz.au/pub/>.
198 * The following bugs are resolved with this release:
200 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
201 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
202 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
203 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
204 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
205 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
206 13484, 13506, 13515, 13523, 13524, 13538, 13540
208 * New program pldd to list loaded object of a process
209 Implemented by Ulrich Drepper.
211 * Add nss_db support back to glibc. No more dependency on Berkeley db
212 and support for initgroups lookups.
213 Implemented by Ulrich Drepper.
215 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
216 Contributed by HJ Lu.
218 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
219 Contributed by HJ Lu.
221 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
222 on x86-32 and x86-64.
223 Contributed by Liubov Dmitrieva.
225 * Optimized strchr and strrchr for SSE on x86-32.
226 Contributed by Liubov Dmitrieva.
228 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
229 for x86-64 and x86-32.
230 Contributed by Liubov Dmitrieva.
232 * New interfaces: scandirat, scandirat64
233 Implemented by Ulrich Drepper.
235 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
236 Implemented by Ulrich Drepper.
238 * nscd now also caches the netgroup database.
239 Implemented by Ulrich Drepper.
241 * Integrate libm with gcc's -ffinite-math-only option.
242 Implemented by Ulrich Drepper.
244 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
245 to math functions. Implemented by Ulrich Drepper.
247 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
248 Implemented by Ulrich Drepper.
250 * New Linux interfaces: process_vm_readv, process_vm_writev
252 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
253 Implemented by Ulrich Drepper.
255 * Optimized nearbyint and strcasecmp for PPC.
256 Implemented by Adhemerval Zanella.
258 * New locales: bho_IN, unm_US, es_CU, ta_LK
262 * The following bugs are resolved with this release:
264 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
265 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
266 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
267 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
268 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
269 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
270 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
271 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
272 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
273 12795, 12811, 12813, 12814, 12841
275 * The RPC implementation in libc is obsoleted. Old programs keep working
276 but new programs cannot be linked with the routines in libc anymore.
277 Programs in need of RPC functionality must be linked against TI-RPC.
278 The TI-RPC implementation is IPv6 enabled and there are other benefits.
280 Visible changes of this change include (obviously) the inability to link
281 programs using RPC functions without referencing the TI-RPC library and the
282 removal of the RPC headers from the glibc headers.
283 Implemented by Ulrich Drepper.
285 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
286 syncfs, setns, sendmmsg
288 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
289 yue_HK, lij_IT, mhr_RU
291 * New encodings: CP770, CP771, CP772, CP773, CP774
293 * New program sotruss to trace calls through PLTs
294 Implemented by Ulrich Drepper.
296 * The malloc hook implementation is marked deprecated and will be removed
297 from the default implementation in the next version. The design never
298 worked ever since the introduction of threads. Even programs which do
299 not create threads themselves can use multiple threads created internally.
303 * The following bugs are resolved with this release:
305 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
306 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
307 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
308 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
311 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
313 * POWER7 optimizations: memset, memcmp, strncmp
315 * New optimized string functions for x86-64: strnlen (SSE2),
316 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
317 Implemented by Ulrich Drepper.
321 * The following bugs are resolved with this release:
323 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
324 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
325 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
326 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
327 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
328 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
329 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
330 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
332 * New interfaces: pthread_getname_np, pthread_setname_np
334 * New Linux interface: recvmmsg
336 * STT_GNU_IFUNC implemented for Sparc by David Miller.
338 * The dynamic linker now recognizes supported ABI versions from the
339 EI_ABIVERSION field in the ELF header.
340 Implemented by Ulrich Drepper.
342 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
343 will not be used to fill in password fields in the passwd.byname replies.
344 Instead it is used to synthesize the shadow.byname table, should it be
345 missing. This is a useful mode in some installations involving Solaris.
346 Implemented by Ulrich Drepper.
348 * New locales: kok_IN, sq_MK, cv_RU
352 * The following bugs are resolved with this release:
354 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
355 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
356 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
357 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
358 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
359 10789, 10817, 10823, 10840, 10847
361 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
363 Implemented by Ulrich Drepper.
365 * Checking version of longjmp added that fails if an uninitialized stack
366 frame would be created. Implemented by Ulrich Drepper.
368 * STT_GNU_IFUNC is now supported in static executables.
369 Implemented by H.J. Lu.
371 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
373 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
374 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
375 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
376 Contributed by H.J. Lu.
378 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
379 Implemented by Ulrich Drepper.
381 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
383 Contributed by H.J. Lu.
385 * Support for fma instruction in AVX on x86-64.
386 Implemented by H.J. Lu and Ulrich Drepper.
388 * AVX support in x86-64 auditing support in ld.so.
389 Implemented by H.J. Lu.
391 * STB_GNU_UNIQUE support added.
392 Implemented by Ulrich Drepper.
394 * Implement second fallback mode for optimized DNS lookup for even more
395 broken environments. If two requests from the same port are not
396 handled correctly close the socket and open a new one before sending
397 the second request. The 'single-request-reopen' option in /etc/resolv.conf
398 can be used to select this mode right away, instead of rediscovering the
399 necessity is every process again.
400 Implemented by Ulrich Drepper.
402 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
403 Implemented by Adam Tkac.
405 * Optimized iconv conversions for S390x.
406 Implemented by Andreas Krebbel.
408 * Using condvars with PI mutexes is now more efficient due to kernel
409 support for requeueing to PI futexes. NPTL support added for x86-64.
410 Implemented by Ulrich Drepper.
412 * New locales: ps_AF, my_MM
416 * The following bugs are resolved with this release:
418 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
419 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
420 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
421 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
422 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
424 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
425 Implemented by Ulrich Drepper.
427 * New Linux interfaces: accept4, fallocate, fallocate64.
428 Implemented by Ulrich Drepper.
430 * Correct declarations of string function when used in C++ code. This
431 could lead to compile errors for invalid C++ code.
433 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
436 * New POSIX 2008 interface: psiginfo
437 Implemented by Ulrich Drepper.
439 * New ISO C++1x interfaces: quick_exit, at_quick_exit
440 Implemented by Ulrich Drepper.
442 * Support for selecting between multiple function definitions at runtime
443 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
445 * The libcrypt library can now use the hash function implementations in
446 NSS. Implemented by Ulrich Drepper.
448 * The malloc implementation can be compiled to be less memory efficient
449 but higher performing in multi-threaded programs.
450 Implemented by Ulrich Drepper.
452 * New locales: nan_TW@latin, ks_IN
454 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
455 Implemented by Ulrich Drepper.
457 * Extended printf hook support. It is possible to use user-defined types
458 and extend existing format specifiers.
459 Implemented by Ulrich Drepper.
461 * Handling for group shadow files has been added.
462 Implemented by Ulrich Drepper.
464 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
465 servers (the case, e.g., for some people using the built-in DNS
466 server in ADSL modems/routers). There is a once-per-process timeout
467 in case of a broken server. To avoid it, users can run nscd or put
468 'options single-request' in /etc/resolv.conf.
469 Implemented by Ulrich Drepper.
473 * The following bugs are resolved with this release:
475 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
476 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
477 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
478 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
479 6968, 6974, 6980, 6995, 7008, 7009, 7029
481 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
482 up at the same time. Implemented by Ulrich Drepper.
484 * TLS descriptors for LD and GD on x86 and x86-64.
485 Implemented by Alexandre Oliva.
487 * getaddrinfo now handles DCCP and UDPlite.
488 Implemented by Ulrich Drepper.
490 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
491 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
492 Implemented by Ulrich Drepper.
494 * New implementation of memmem, strstr, and strcasestr which is O(n).
495 Implemented by Eric Blake.
497 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
499 * Implement "e" option for popen to open file descriptor with the
500 close-on-exec flag set. Implemented by Ulrich Drepper.
502 * Implement "b" mode for fmemopen. In this mode writes writes don't
503 implicitly add a NUL byte and seeks from the end of the buffer really
504 use the buffer end, not the string length as the basis.
505 Implemented by Ulrich Drepper.
507 * Many functions, exported and internal, now atomically set the close-on-exec
508 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
510 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
512 Implemented by Pravin Satpute.
514 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
518 * The following bugs are resolved with this release:
520 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
521 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
522 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
523 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
524 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
525 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
526 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
528 * New locales: bo_CN, bo_IN, shs_CA.
530 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
532 * Sorting rules for some Indian languages (Devanagari and Gujarati).
533 Implemented by Pravin Satpute.
535 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
537 * nscd caches now all timeouts for DNS entries
538 Implemented by Ulrich Drepper.
540 * nscd is more efficient and wakes up less often.
541 Implemented by Ulrich Drepper.
543 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
544 vdprintf, and obstack_vprintf.
545 Implemented by Jakub Jelinek.
547 * Faster memset for x86-64.
548 Implemented by Harsha Jagasia and H.J. Lu.
550 * Faster memcpy on x86.
551 Implemented by Ulrich Drepper.
553 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
554 Implemented by Ulrich Drepper.
556 * Faster sqrt and sqrtf implemention for some PPC variants.
557 Implemented by Steven Munroe.
561 * The following bugs are resolved with this release:
563 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
564 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
565 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
566 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
567 5071, 5103, 5104, 5112, 5113, 5184, 5186
569 * More checking functions: fread, fread_unlocked, open*, mq_open.
570 Implemented by Jakub Jelinek and Ulrich Drepper.
572 * Extend fortification to C++. Implemented by Jakub Jelinek.
574 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
575 by not recognizing 'a' as a modifier when those specs are requested.
576 Implemented by Jakub Jelinek.
578 * PPC optimizations to math and string functions.
579 Implemented by Steven Munroe.
581 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
582 options to be passed. Implemented by Ulrich Drepper.
584 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
586 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
587 Implemented by Ulrich Drepper.
589 * Handle private futexes in the NPTL implementation.
590 Implemented by Jakub Jelinek and Ulrich Drepper.
592 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
593 Implemented by Roland McGrath and Ulrich Drepper.
595 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
597 * SHA-256 and SHA-512 based password encryption.
598 Implemented by Ulrich Drepper.
600 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
601 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
604 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
605 Implemented by Ulrich Drepper.
609 * The following bugs are resolved with this release:
611 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
612 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
613 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
614 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
615 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
616 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
617 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
620 * New Linux interfaces: epoll_pwait, sched_getcpu.
622 * New generic interfaces: strerror_l.
624 * nscd can now cache the services database. Implemented by Ulrich Drepper.
628 * The following bugs are resolved with this release:
630 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
631 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
632 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
633 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
634 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
635 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
636 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
637 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
638 3225, 3251, 3252, 3253, 3273
640 * For Linux, the sorting of addresses returned by getaddrinfo now also
641 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
642 Implemented by Ulrich Drepper.
644 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
645 Implemented by Ulrich Drepper.
647 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
649 * New iconv module for MIK. Contributed by Alexander Shopov.
651 * For sites with broken group and/or passwd database, the auto-propagate
652 option of nscd can prevent creating ID lookup entries from the results
653 of a name lookup and vice versa. This usually is no problem but some
654 site might have problems with the default behavior.
655 Implemented by Ulrich Drepper.
657 * Iterating over entire database in NIS can be slow. With the
658 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
659 to trade time for memory. The entire database will be read at once.
660 Implemented by Ulrich Drepper.
662 * The interfaces introduced in RFC 3542 have been implemented by
665 * Support for the new ELF hash table format was added by Ulrich Drepper.
667 * Support for priority inheritance mutexes added by Jakub Jelinek and
670 * Support for priority protected mutexes added by Jakub Jelinek.
672 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
673 or_IN, csb_PL, fy_NL, sr_ME.
677 * More overflow detection functions.
679 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
680 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
682 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
683 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
684 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
685 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
686 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
687 by Masahide Washizawa.
689 * It is now possible to install audit libraries for the dynamic linker using
690 LD_AUDIT. Implemented by Ulrich Drepper.
692 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
693 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
694 For a libc and libpthread that works well on Linux 2.4 kernels, we
695 recommend using the stable 2.3 branch.
697 * The new function open_wmemstream acts like open_memstream,
698 but uses a wchar_t wide character buffer.
700 * The new function ppoll is an improved version of poll, similar to pselect.
702 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
703 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
704 renameat, unlinkat, linkat, symlinkat, readlinkat.
706 * New Linux kernel system calls: unshare,
707 inotify_init, inotify_add_watch, inotify_rm_watch.
709 * The euidaccess function is now also known by the alias eaccess,
710 for compatibility with some other systems.
712 * Timezone data updated to 2006b version.
716 * The following bugs are resolved with this release:
718 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
719 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
720 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
721 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
722 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
723 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
725 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
727 * As of this release, GCC 4 can be used to compile the C Library.
729 * Timezone data updated to 2005m version.
733 * The following bugs are resolved with this release:
735 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
736 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
737 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
738 777, 787, 821, 822, 823, 825
740 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
744 * Support for RFC 3678. Real implementations exist only for Linux so far.
745 Implemented by Ulrich Drepper.
747 * nscd can now cache entries persistently. Expiring entries are reloaded.
748 For speedups the cache can be shared in memory with client processes.
749 Implemented by Ulrich Drepper.
751 * nscd can now perform SELinux checks.
752 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
754 * getaddrinfo queries are now cached. Canonical name lookup is performed
756 Implemented by Ulrich Drepper.
758 * The nothrow function attribute is used when headers are used by gcc when
759 compiling C code. This can avoid significant amounts of exception
762 * The malloc functions perform more error checking and are stricter when
763 it comes to reacting on errors. The default action is to terminate
764 the process after showing an error message. Implemented by Ulrich Drepper.
766 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
767 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
769 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
770 namespaces using the new function dlmopen(). This feature is of course,
771 like most other dynamic loading functionality, not available in statically
772 linked applications. Implemented by Ulrich Drepper.
774 * Low-overhead boundary checking variants of string and some stdio functions
775 were added. These are to be used in conjunction with a gcc patch by
776 Jakub Jelinek which adds calls to these functions if possible.
777 Implemented by Jakub Jelinek and Ulrich Drepper.
779 * Old code for several operating systems and machine architectures that
780 have not been in working condition in a long time have been removed from
781 the main source tree maintained by the GNU C Library's maintainers.
782 These files are now reside in the separate `ports' source module
783 that is usable as an add-on when building the library.
787 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
788 interrogate the dynamic linker, compatible with the Solaris interface.
790 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
791 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
793 * getifaddrs now uses the netlink interface on Linux to get its information.
794 Implemented by Thorsten Kukuk.
796 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
797 Implemented by Ulrich Drepper.
799 * support for non-executable stacks on x86 has been added. Changes mostly
802 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
805 * getaddrinfo now performs destination address selection according to
810 * Thread-safe interfaces for many functions that access locale data
811 were added in version 2.3, but these features were omitted from NEWS.
812 Many functions have variants with an `_l' suffix that take a `locale_t'
813 object as a parameter rather than consulting the current locale.
814 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
815 create and maintain `locale_t' objects. Additionally, the new function
816 `uselocale' sets "the current locale" (as used by functions not so
817 parameterized) set for an individual thread. These features were added
818 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
820 * The functions getresuid, getresgid, setresuid, and setresgid, which
821 have long been available on Linux, are now declared in <unistd.h>
822 and are now also available on the Hurd.
824 * ELF thread-local storage support (TLS) now works on x86-64.
826 * The new dynamic string token $LIB is expanded in shared library names.
827 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
829 * Aldy Hernandez contributed complete software floating point support for
830 PowerPC machines with no FPU.
832 * fexecve is implemented on Linux.
834 * The `btowc' function should work at least twice as fast due to
835 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
837 * With approriate thread add-ons cancelable functions are now implemented
838 in libc.so as well. No need to call the function in libpthread. This
839 change allowed to finally disable the incorrect and expensive handling
840 of weak definition in ld.so.
842 * Yet more PLT entries in libc.so have been removed. We finally arrived
843 at the bare minimum. Startup times improved appropriately.
845 * Support for the new Linux/x86 system call interface was added. The
846 AT_SYSINFO auxiliary vector entry is recognized and handled.
850 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
853 * iconv (the program and the interface) now accepts empty names (excluding
854 options like //TRANSLIT) to mean "use charset of current locale".
856 * localedef can now transliterate characters in strings which are not in
857 the provided charmap. The information from the input locale is used.
859 * Prelinking support was added for ELF targets. This requires additional
860 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
862 * Read-only stdio streams now use mmap to speed up operation by eliminating
863 copying and buffer underflows. To use add 'm' to the mode string of
864 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
866 * The malloc functions were completely rewritten by Wolfram Gloger based
867 on Doug Lea's malloc-2.7.0.c.
869 * Isamu Hasegawa contributed a completely new and POSIX-conformant
870 implementation of regex.
872 * Bruno Haible upgraded the iconv and locale implementation to support
875 * Contents of the LC_* and LANG environment variables in the CEN style are
876 not recognized anymore. It never was used. Change by Ulrich Drepper.
878 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
879 thread-local storage (TLS) ABI on some platforms.
880 Changes by Ulrich Drepper. SH support by Kaz Kojima.
882 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
883 EUC-JISX0213, and TSCII.
885 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
886 BSD-compatible interface for getting all network interface addresses.
887 Implementation for IPv4 by Roland McGrath.
889 * Loading of locale data is faster due to the introduction of a locale
890 archive. Implemented by Roland McGrath and Ulrich Drepper.
892 * Startup times are significantly reduced by not using exported functions
893 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
896 * Steven Munroe contributed a port to PowerPC64/Linux.
900 * The Hurd now uses the GNU libio implementation of stdio rather than the
901 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
903 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
904 with the same behavior as the Linux system call of the same name.
908 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
909 128-bit long double format.
911 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
912 IBM1161, and IBM1162 charsets.
914 * Andreas Jaeger contributed a port to x86-64/Linux.
916 * Peter Bruin contributed a port to PowerPC/Hurd.
918 * libc functions using I/O streams now can handle wide-oriented streams
921 * optimizations in the dynamic linker. Binaries created by recent binutils
922 versions start up quicker due to reduced time spent on relocations.
924 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
928 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
929 asinh, atanh, j0 for the 128-bit long double format.
931 * Bruno Haible updated all the code handling Unicode in some form to
934 * Speed of regex for single-byte locales is back to previous levels.
935 Patch by Isamu Hasegawa.
937 * Alpha, SPARC, and IA-64 now also using floating stacks.
939 * Startup time of internationalized applications greatly improved through
940 iconv cache. Use iconvconfig to generate the cache file.
941 Contributed by Ulrich Drepper.
943 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
944 severe performance problems. Patch by David Mosberger.
946 * The Hurd port got a lot more functionality like AIO, various stdio
947 extensions, etc. Mainly done by Roland McGrath.
949 * mtrace can now lookup symbols in shared libraries.
953 * Intel's IA-64 math library is largely integrated. It provides fast and
954 accurate implementatations for most basic and standard math functions
955 in float, double, and long double format.
957 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
958 and asin for the 96-bit long double format and asin, log, tan for the
959 128-bit long double format.
961 * The beginning of a last-bit accurate math library by IBM Haifa were added.
962 The basic double functions exist today. Contributed by Abraham Ziv
963 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
964 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
966 * An asynchronous name lookup library was added. The interface is designed
967 after POSIX AIO. The proposal was circulated beforehand to get comments.
968 No negative ones came in. Implemented by Ulrich Drepper.
970 * Port to S390/64bit contributed by Martin Schwidefsky
971 <schwidefsky@de.ibm.com>.
973 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
974 of functions for Linux/IA-64.
976 * The RPC code is now thread safe. Threads can now use the same service
977 of different services at the same time. Patch by Eric Norum
978 <eric.norum@usask.ca> with some help by Ulrich Drepper.
980 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
981 family of functions for Linux/S390.
983 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
984 of functions for Linux/x86.
986 * Port to Linux/CRIS contributed by Axis Communications.
990 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
991 we can now check for namespace violations and missing declarations. The
992 result is that almost all headers are now Unix-compliant (as defined in
993 the upcoming XPG6). The negative side is that some programs might need
994 corrections, too, if they depend on the incorrect form of the headers in
995 previous versions which defined too many symbols and included too many
998 * regex now handles multibyte character sets correctly.
999 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1001 * iconv (the program) does now conform to the upcoming XPG6 and handles
1002 charmaps. Instead of the charset names the path of charmaps can be
1003 provided and the conversion happens based on this data.
1004 Contributed by Ulrich Drepper.
1006 * The locale program now provides detailed information about the installed
1011 only lists the names of the supported locales
1015 provides details such as country, language, and codeset name.
1016 Contributed by Ulrich Drepper.
1020 * The gencat program now parses the input file according to the charset
1021 selected by the LC_CTYPE category. This is important for stateful
1022 character sets. To make generating catalogs easier there is a way
1023 to overwrite the charset selected by the locale: before the first
1024 message or $ quote line the catalog can contain a line like
1026 $ codeset=ISO-8859-2
1028 to select the charset (ISO-8859-2 in this case).
1030 Implemented by Shinya Hanataka and Ulrich Drepper.
1032 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1033 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1034 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1036 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1037 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1039 * The LANGUAGE environment variable is now ignored unless the locale is
1040 changed from the default "C" locale.
1042 * The usual bug fixes.
1046 * Greg McGary added runtime support for bounds checking using gcc's
1047 new -fbounded-pointers option. ix86 target is complete. PowerPC
1050 * Thorsten Kukuk added secure mode support to nscd.
1052 * The Berkeley db libraries have been removed.
1054 Related, the nss_db module is now in a separate package since it
1055 obviously requires a database library being available.
1057 * Wide character I/O streams implemented by Ulrich Drepper.
1059 * Functions from the extended socket API added by Ulrich Drepper.
1061 * Functions feenableexcept and fedisableexcept to control the
1062 behaviour of individual exceptions have been added by Andreas Jaeger.
1064 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1066 * The resolver code has been updated from bind 8.2.3-T5B which supports
1067 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1070 This change could in some situations effect backward compatibility. Since
1071 now `_res' is a thread-local instead of a global variable, modifying it
1072 in one thread does not have any effect in other threads.
1074 The resolver library was also extended to allow IPv6 as the transport
1075 protocol for the requests. This work was done by Stig Venaas.
1077 * Compatibility code for K&R C compilers has been removed from the
1078 header files. A ISO C compiler is needed to use the library
1079 (conforming to either C89 or C99 standard).
1081 * Complete rewrite of the localedef program to support multibyte character
1082 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1083 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1084 Implemented by Ulrich Drepper.
1086 Bruno Haible significantly improved the generation and use of the data
1087 structures for the wide character tables.
1089 * Plural handling in gettext implemented by Ulrich Drepper.
1091 * The utmp daemon has been removed.
1093 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1095 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1098 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1100 * POSIX barriers implemented by Kaz Kylheku.
1102 * POSIX spawn function family implemented by Ulrich Drepper.
1104 * POSIX spinlocks are now available.
1106 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1108 * the configure option --enable-kernel=X.Y.Z allows to strip out
1109 compatibility for kernel versions before X.Y.Z. This is currently only
1110 implemented for Linux.
1112 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1113 field sin6_scope_id. This means that all programs using IPv6 should be
1114 recompiled. Don't expect binary compatibility with previous glibc
1117 * various conversion modules for IBM character sets contributed by
1120 * IA-64 port by Jes Sorensen and HJ Lu.
1134 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1136 * New xdr functions are added; some rpc functions are now 64bit clean.
1138 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1140 * Fixed known incompatibilities with glibc 2.0.
1142 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1144 * Optimized a number of functions (especially the ELF dynamic loader).
1146 * Update timezone data files.
1148 * lots of charmaps corrections
1150 * some new locale definitions and charmaps
1155 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1156 conform to POSIX member type requirements. Symbol versions have been
1157 adjusted as needed within the library, and for direct use by applications,
1158 but there is potential for problems if third-party libraries use
1159 struct timeval as part of their interface. This does not present
1160 a problem for X and other "essential" system libraries.
1162 * An additional locale model to support C++ Standard Library locale
1163 model and probably more was implemented by Ulrich Drepper.
1165 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1168 * Miles Bader provided the `argp' function family to support hierachical
1169 command line argument parsing, layered on top of getopt.
1171 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1173 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1176 * scanf recognizes the %a and %A format for scanning floating point numbers.
1178 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1179 information and interfaces for the available integer types.
1181 * about 130 new math functions were added to implement the ISO C9x math
1184 * the new header <complex.h> contains definitions of the complex math
1185 functions from ISO C 9X.
1187 * the new header <tgmath.h> defines generic macros to use complex or
1188 real valued functions.
1190 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1192 * Andreas Jaeger provided a test suite for the math library.
1194 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1196 * Ulrich Drepper added character set conversion functions (iconv).
1198 * Optimized string functions have been added.
1200 * The localedata addon is now part of glibc.
1202 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1204 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1205 daemon for NSS (nscd).
1207 Missing a better place here are some numbers on improvements. Under
1208 Linux 2.1.125 un-tar-ing the kernel sources takes
1212 using local files 12.19s 6.88s 22.91s
1214 using NIS 13.92s 8.91s 26.34s
1216 using NIS & nscd 10.37s 7.34s 25.30s
1218 using NIS+ 27.57s 30.37s 640.46s
1220 using NIS+ & nscd 10.25s 7.83s 26.51s
1222 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1224 Keep in mind that non-namelookup related operations dominate above times.
1225 It was just a common complain that using NIS+ unpacking the kernel is
1228 [1] The old nscd implementation is not available anymore since it was
1229 distributed with glibc up to version 2.0.98 and thus is now replaced.
1231 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1233 * Mark Kettenis provided a Hesiod NSS module.
1235 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1236 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1238 * rcmd can now handle netgroups (Dick Streefland).
1240 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1243 * Support for the IPv6 protocol has been added to the socket API, as per the
1244 latest draft standards.
1246 * Support for Linux 2.2 has been added.
1248 * Interface changes relative to the latest 2.0.x release:
1249 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1250 addseverity NEW: Unix98
1251 alphasort64 NEW: LFS
1252 argp_err_exit_status NEW: argp, GNU ext
1253 argp_error NEW: argp, GNU ext
1254 argp_failure NEW: argp, GNU ext
1255 argp_help NEW: argp, GNU ext
1256 argp_parse NEW: argp, GNU ext
1257 argp_program_bug_address NEW: argp, GNU ext
1258 argp_program_version NEW: argp, GNU ext
1259 argp_program_version_hook NEW: argp, GNU ext
1260 argp_state_help NEW: argp, GNU ext
1261 argp_usage NEW: argp, GNU ext
1262 authdes_create NEW: Secure RPC
1263 authdes_getucred NEW: Secure RPC
1264 authdes_pk_create NEW: Secure RPC
1265 backtrace NEW: GNU ext.
1266 backtrace_symbols NEW: GNU ext.
1267 backtrace_symbols_fd NEW: GNU ext.
1269 cacosf NEW: ISO C 9x
1270 cacosh NEW: ISO C 9x
1271 cacoshf NEW: ISO C 9x
1272 cacoshl NEW: ISO C 9x
1273 cacosl NEW: ISO C 9x
1280 casinf NEW: ISO C 9x
1281 casinh NEW: ISO C 9x
1282 casinhf NEW: ISO C 9x
1283 casinhl NEW: ISO C 9x
1284 casinl NEW: ISO C 9x
1286 catanf NEW: ISO C 9x
1287 catanh NEW: ISO C 9x
1288 catanhf NEW: ISO C 9x
1289 catanhl NEW: ISO C 9x
1290 catanl NEW: ISO C 9x
1291 cbc_crypt NEW: Secure RPC
1295 ccoshf NEW: ISO C 9x
1296 ccoshl NEW: ISO C 9x
1302 cimagf NEW: ISO C 9x
1303 cimagl NEW: ISO C 9x
1304 clearerr_locked REMOVED
1305 clntunix_create NEW: sunrpc ext
1307 clog10 NEW: ISO C 9x
1308 clog10f NEW: ISO C 9x
1309 clog10l NEW: ISO C 9x
1319 cprojf NEW: ISO C 9x
1320 cprojl NEW: ISO C 9x
1322 crealf NEW: ISO C 9x
1323 creall NEW: ISO C 9x
1328 csinhf NEW: ISO C 9x
1329 csinhl NEW: ISO C 9x
1332 csqrtf NEW: ISO C 9x
1333 csqrtl NEW: ISO C 9x
1337 ctanhf NEW: ISO C 9x
1338 ctanhl NEW: ISO C 9x
1340 des_setparity NEW: Secure RPC
1341 ecb_crypt NEW: Secure RPC
1342 endutxent NEW: Unix98
1344 exp10f NEW: ISO C 9x
1345 exp10l NEW: ISO C 9x
1349 fattach NEW: STREAMS
1350 fdetach NEW: STREAMS
1354 feclearexcept NEW: ISO C 9x
1355 fegetenv NEW: ISO C 9x
1356 fegetexceptflag NEW: ISO C 9x
1357 fegetround NEW: ISO C 9x
1358 feholdexcept NEW: ISO C 9x
1360 feraiseexcept NEW: ISO C 9x
1361 ferror_locked REMOVED
1362 fesetenv NEW: ISO C 9x
1363 fesetexceptflag NEW: ISO C 9x
1364 fesetround NEW: ISO C 9x
1365 fetestexcept NEW: ISO C 9x
1366 feupdateenv NEW: ISO C 9x
1367 fflush_locked REMOVED
1371 fgets_unlocked NEW: GNU ext.
1372 fileno_locked REMOVED
1384 fputc_locked REMOVED
1385 fputs_unlocked NEW: GNU ext.
1386 fread_unlocked NEW: GNU ext.
1391 fstatvfs NEW: Unix98
1395 ftruncate64 NEW: LFS
1397 fwrite_unlocked NEW: GNU ext.
1398 gai_strerror NEW: IPv6
1402 getchar_locked REMOVED
1404 getdate_err NEW: Unix98
1405 getdate_r NEW: GNU ext.
1407 getnameinfo NEW: IPv6
1408 getnetname NEW: Secure RPC
1409 getpmsg NEW: STREAMS
1410 getpt NEW: Unix98 PTY
1411 getrlimit64 NEW: LFS
1412 getutxent NEW: Unix98
1413 getutxid NEW: Unix98
1414 getutxline NEW: Unix98
1415 glob64 NEW: GNU ext.
1416 globfree64 NEW: GNU ext.
1417 gnu_get_libc_release NEW: GNU ext.
1418 gnu_get_libc_version NEW: GNU ext.
1419 grantpt NEW: Unix98 PTY
1420 host2netname NEW: Secure RPC
1422 iconv_close NEW: iconv
1423 iconv_open NEW: iconv
1424 if_freenameindex NEW: IPv6
1425 if_indextoname NEW: IPv6
1426 if_nameindex NEW: IPv6
1427 if_nametoindex NEW: IPv6
1428 in6addr_any NEW: IPv6
1429 in6addr_loopback NEW: IPv6
1430 inet6_isipv4mapped NEW: IPv6
1431 isastream NEW: STREAMS
1432 iswblank NEW: GNU ext.
1433 key_decryptsession NEW: Secure RPC
1434 key_decryptsession_pk NEW: Secure RPC
1435 key_encryptsession NEW: Secure RPC
1436 key_encryptsession_pk NEW: Secure RPC
1437 key_gendes NEW: Secure RPC
1438 key_get_conv NEW: Secure RPC
1439 key_secretkey_is_set NEW: Secure RPC
1440 key_setnet NEW: Secure RPC
1441 key_setsecret NEW: Secure RPC
1442 llrint NEW: ISO C 9x
1443 llrintf NEW: ISO C 9x
1444 llrintl NEW: ISO C 9x
1445 llround NEW: ISO C 9x
1446 llroundf NEW: ISO C 9x
1447 llroundl NEW: ISO C 9x
1452 lrintf NEW: ISO C 9x
1453 lrintl NEW: ISO C 9x
1454 lround NEW: ISO C 9x
1455 lroundf NEW: ISO C 9x
1456 lroundl NEW: ISO C 9x
1458 makecontext NEW: Unix98
1459 mempcpy NEW: GNU ext.
1462 modify_ldt NEW: kernel
1466 nearbyint NEW: ISO C 9x
1467 nearbyintf NEW: ISO C 9x
1468 nearbyintl NEW: ISO C 9x
1469 netname2host NEW: Secure RPC
1470 netname2user NEW: Secure RPC
1471 nexttoward NEW: ISO C 9x
1472 nexttowardf NEW: ISO C 9x
1473 nexttowardl NEW: ISO C 9x
1477 passwd2des NEW: Secure RPC
1479 pow10f NEW: GNU ext.
1480 pow10l NEW: GNU ext.
1483 printf_size NEW: GNU ext.
1484 printf_size_info NEW: GNU ext.
1485 profil_counter REMOVED
1486 pthread_mutexattr_getkind_np REPLACED
1487 pthread_mutexattr_setkind_np REPLACED
1488 ptsname NEW: Unix98 PTY
1489 ptsname_r NEW: Unix98 PTY
1491 putchar_locked REMOVED
1492 putgrent NEW: GNU ext.
1494 putpmsg NEW: STREAMS
1495 pututxline NEW: Unix98
1499 readdir64_r NEW: LFS
1500 remquo NEW: ISO C 9x
1501 remquof NEW: ISO C 9x
1502 remquol NEW: ISO C 9x
1504 roundf NEW: ISO C 9x
1505 roundl NEW: ISO C 9x
1507 scalbln NEW: ISO C 9x
1508 scalblnf NEW: ISO C 9x
1509 scalblnl NEW: ISO C 9x
1511 sendfile NEW: kernel
1512 setcontext NEW: Unix98
1513 setrlimit64 NEW: LFS
1514 setutxent NEW: Unix98
1516 sigignore NEW: Unix98
1517 sigqueue NEW: POSIX.1b
1518 sigrelse NEW: Unix98
1519 sigset NEW: POSIX.1b
1520 sigtimedwait NEW: POSIX.1b
1521 sigwaitinfo NEW: POSIX.1b
1522 sincos NEW: GNU ext.
1523 sincosf NEW: GNU ext.
1524 sincosl NEW: GNU ext.
1528 strcasestr NEW: GNU ext.
1529 strtoimax NEW: ISO C 9x
1530 strtoumax NEW: ISO C 9x
1531 strverscmp NEW: GNU ext.
1532 svcauthdes_stats NEW: Secure RPC
1533 svcunix_create NEW: sunrpc etx
1534 svcunixfd_create NEW: sunrpc ext
1535 swapcontext NEW: Unix98
1536 tcgetsid NEW: Unix98 PTY
1537 tdestroy NEW: GNU ext.
1538 tgamma NEW: ISO C 9x
1539 tgammaf NEW: ISO C 9x
1540 tgammal NEW: ISO C 9x
1544 truncf NEW: ISO C 9x
1545 truncl NEW: ISO C 9x
1547 unlockpt NEW: Unix98 PTY
1548 updwtmpx NEW: Unix98
1549 user2netname NEW: Secure RPC
1550 utmpxname NEW: Unix98
1551 versionsort NEW: GNU ext.
1552 versionsort64 NEW: GNU ext.
1554 wcscasecmp NEW: GNU ext.
1555 wcsncasecmp NEW: GNU ext.
1556 wcsnlen NEW: GNU ext.
1557 wcstoimax NEW: ISO C 9x
1558 wcstoll NEW: ISO C 9x
1559 wcstoull NEW: ISO C 9x
1560 wcstoumax NEW: ISO C 9x
1562 wordexp NEW: POSIX.2
1563 wordfree NEW: POSIX.2
1564 write_profiling REMOVED
1565 xdecrypt NEW: Secure RPC
1566 xdr_authdes_cred NEW: Secure RPC
1567 xdr_authdes_verf NEW: Secure RPC
1568 xdr_cryptkeyarg NEW: Secure RPC
1569 xdr_cryptkeyarg2 NEW: Secure RPC
1570 xdr_cryptkeyres NEW: Secure RPC
1571 xdr_getcredres NEW: Secure RPC
1572 xdr_key_netstarg NEW: Secure RPC
1573 xdr_key_netstres NEW: Secure RPC
1574 xdr_keybuf NEW: Secure RPC
1575 xdr_keystatus NEW: Secure RPC
1576 xdr_netnamestr NEW: Secure RPC
1577 xdr_sizeof NEW: Secure RPC
1578 xdr_unixcred NEW: sunrpc ext
1579 xencrypt NEW: Secure RPC
1580 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1591 * inet_ntoa is thread-safe
1593 * updwtmp is moved from libutil to libc
1595 * rewrite of cbrt function
1597 * update of timezone data
1611 * add atoll function
1613 * fix complex problems in Berkeley DB code
1615 * fix math functions
1619 * fixed lots of header problems (especially Linux/GNU specific)
1621 * dynamic loader preserves all registers
1623 * Roland McGrath provided support for handling of auxiliary objects in
1624 the ELF dynamic loader.
1626 * support for parallel builds is improved
1630 * GNU extensions are no longer declared by default. To enable them you
1631 must define the macro `_GNU_SOURCE' in your program or compile with
1634 * The library has changed from using GNU ld symbol aliases to using weak
1635 symbols where available. The ELF object file format supports weak
1636 symbols; GNU ld also supports weak symbols in the a.out format. (There
1637 is also now support for other GNU ld extensions in ELF. Use the
1638 `--with-elf' option to configure to indicate you have ELF, and
1639 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1640 of many files which contained only symbol aliases, reducing the size of
1641 the source and the compiled library; many other files were renamed to
1642 less cryptic names previously occupied by the symbol alias files.
1643 There is a new header file <elf.h> for programs which operate on
1644 files in the ELF format.
1646 * Converted to Autoconf version 2, so `configure' has more options.
1647 Run `configure --help' to see the details.
1649 * The library can now be configured to build profiling, highly-optimized
1650 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1651 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1652 `configure' enable building these extra libraries. The shared library is
1653 built by default when using both ELF and GNU ld. When shared libraries
1654 are enabled, the new library `-ldl' is available for arbitrary run-time
1655 loading of shared objects; its interface is defined in <dlfcn.h>. The
1656 new header file <link.h> gives access to the internals of the run-time
1657 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1658 application of same name on other systems and it provides information
1659 about dynamically linked binaries.
1661 * The C library now provides the run-time support code for profiling
1662 executables compiled with `-pg'. Programs can control the profiling code
1663 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1664 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1665 the support for this file format was contributed by David Mosberger-Tang.
1667 * The math code has been replaced with a math library based on fdlibm from
1668 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1669 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1670 functions. The math functions now reside in a separate library, so
1671 programs using them will need to use `-lm' their linking commands.
1673 * John C. Bowman contributed optimized ix87 assembler inline functions.
1675 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1676 mechanism similar to that found in Solaris 2. This is now used for the
1677 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1678 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1679 file controls what services are used for each individual database. This
1680 works by loading shared libraries with names specified in `nsswitch.conf',
1681 so service modules can be changed or added at any time without even
1682 relinking any program. Currently there are the file, db, and NIS based
1683 NSS services available.
1685 * The new functions `strtoq' and `strtouq' parse integer values from
1686 strings, like `strtol' and `strtoul', but they return `long long int' and
1687 `unsigned long long int' values, respectively (64-bit quantities).
1689 * The new functions `strtof' and `strtold' parse floating-point values from
1690 strings, like `strtod', but they return `float' and `long double' values,
1691 respectively (on some machines `double' and `long double' are the same).
1693 * Ulrich Drepper has contributed new implementations of the floating-point
1694 printing and reading code used in the `printf' family of functions and
1695 `strtod', `strtof', and `strtold'. These new functions are perfectly
1696 accurate, and much faster than the old ones.
1698 * The implementation of the POSIX locale model was completely rewritten by
1699 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1700 to compile the POSIX locale definition.
1702 * The former dummy implementations of the strcoll and strxfrm function are
1703 now replaced by fully functional code contributed by Ulrich Drepper. The
1704 collation information comes from the POSIX locale definitions.
1706 * The new header <langinfo.h> defines an interface for accessing
1707 various locale-dependent data (using the locale chosen with `setlocale').
1709 * Ulrich Drepper has contributed a new suite of functions for operation on
1710 wide-character and multibyte-character strings, in <wchar.h>;
1711 and classification and case conversion of wide characters, in <wctype.h>.
1712 These new functions are conforming to the ISO C, Amendement 1 specification.
1714 * There is now a second implementation of the standard I/O library available.
1715 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1716 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1718 * You can now use positional parameter specifications in format strings
1719 for the `printf' and `scanf' families of functions. For example,
1720 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1721 ``Number 6, Mr Jones''. This is mainly useful when providing different
1722 format strings for different languages, whose grammars may dictate
1723 different orderings of the values being printed. To support this
1724 feature, the interface for `register_printf_handler' has changed; see
1725 the header file <printf.h> for details.
1727 * The `printf' and `scanf' families of functions now understand a new
1728 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1729 to group numbers as indicated by the locale; for `scanf' and friends, this
1730 says to accept as valid only a number with all the proper grouping
1731 separators in the right places. In the default "C" locale, numbers are
1732 not grouped; but locales for specific countries will define the usual
1733 conventions (i.e. separate thousands with `,' in the US locale).
1735 * The pgrp functions have been regularized, slightly incompatibly but much
1736 less confusingly. The core functions are now `getpgid' and `setpgid',
1737 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1738 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1739 provided for compatibility. There is no longer an incompatible `getpgrp'
1740 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1742 * The new header file <fts.h> and suite of functions simplify programs that
1743 operate on directory trees. This code comes from 4.4 BSD.
1745 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1746 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1747 NSS scheme used in glibc.
1749 * There is a new malloc debugging hook `__memalign_hook'.
1751 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1752 `unsigned int' in <sys/types.h>. These are for compatibility only and
1753 their use is discouraged.
1755 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1756 done differently, so that it works even without GNU ld.
1758 * New function `euidaccess' checks allowed access to a file like `access',
1759 but using the effective IDs instead of the real IDs.
1761 * The time zone data files have been updated for the latest and greatest
1762 local time conventions of the countries of the world.
1764 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1767 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1768 for formatting floating-point numbers. They are provided only for
1769 compatibility; new programs should use `sprintf' instead. There are
1770 also equivalent function for the `long double' floating-point type and
1771 all functions also exist in a reentrant form.
1773 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1774 functions for maintaining the login-record files (primarily of use to
1775 system programs such as `login'), and convenient functions for
1776 allocating and initializing a pseudo-terminal (pty) device.
1778 * Ulrich Drepper has contributed new support for System V style
1779 shared memory and IPC on systems that support it.
1781 * Ulrich Drepper has contributed several miscellaneous new functions found
1782 in System V: The `hsearch' family of functions provide an effective
1783 implementation of hash tables; `a64l' and `l64a' provide a very simple
1784 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1787 * Ulrich Drepper has contributed new reentrant counterparts for the
1788 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1790 * Ulrich Drepper has contributed new, highly-optimized versions of several
1791 string functions for the i486/Pentium family of processors.
1793 * Ulrich Drepper has updated the Linux-specific code, based largely
1794 on work done in Hongjiu Lu's version of GNU libc for Linux.
1795 The GNU library now supports Linux versions 2.0.10 and later,
1796 using the ELF object file format (i[3456]86-*-linux).
1798 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1800 * David Mosberger-Tang and Richard Henderson have ported the C library
1801 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1802 dynamic linking support for ELF/Alpha.
1804 * Richard Henderson contributed several Alpha optimized assembler function
1805 for arithmetic and string handling.
1807 * Ulrich Drepper has contributed a new set of message catalog functions to
1808 support multiple languages using the <libintl.h> interface, for use with
1809 his new package GNU gettext. Translation volunteers have contributed
1810 catalogs of the library's messages in Spanish, German, and Korean.
1812 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1813 program and the `catgets' function for reading the catalog files it
1814 creates. (The <libintl.h> interface is preferred; we include the
1815 <nl_types.h> interface using `catgets' only for source compatibility with
1816 programs already written to use it.)
1818 * New header file <values.h> gives SVID-compatible names for <limits.h>
1821 * Various new macros, declarations, and small header files for compatibility
1824 * New function `group_member' is a convenient way to check if a process has
1825 a given effective group ID.
1827 * When using GCC 2.7 and later, the socket functions are now declared in a
1828 special way so that passing an argument of type `struct sockaddr_in *',
1829 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1830 `struct sockaddr *' type, does not generate a type-clash warning.
1832 * New function `error' declared in header file <error.h> is a convenient
1833 function for printing error messages and optionally exiting; this is the
1834 canonical function used in GNU programs. The new functions `err', `warn',
1835 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1836 doing the same thing.
1838 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1839 POSIX.2 `glob' function to do ~ and {...} expansion.
1841 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1842 `clearenv' which is used in POSIX.9 is also available.
1844 * New function `getsid' returns session ID number on systems that support it.
1846 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1847 files <db.h> and <mpool.h> provide a rich set of functions for several
1848 types of simple databases stored in memory and in files, and <ndbm.h> is
1849 an old `ndbm'-compatible interface using the `db' functions. Link with
1850 `-ldb' to get these functions.
1852 * New macro `strdupa' copies a string like `strdup', but uses local stack
1853 space from `alloca' instead of dynamic heap space from `malloc'.
1855 * New function `strnlen' is like `strlen' but searches only a given maximum
1856 number of characters for the null terminator. `stpncpy', `strndup' and
1857 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1860 * New function `statfs' in header <sys/statfs.h>.
1862 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1863 provide convenient functions for operating on blocks of null-terminated
1866 * A new suite of functions in <utmp.h> handle all the details of reading
1867 and writing the utmp file.
1869 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1872 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1873 completely POSIX compliant and also implemented the extended functionality
1874 to handle alternate digit representation and alternate era date formats.
1876 * Ulrich Drepper provided an implementation of the `strptime' function
1877 defined in XPG4.2 which transforms a string into a `struct tm' value.
1879 * Paul Eggert provided the tzselect shell script as part of the timezone
1880 code. The shell script makes it easy to select the correct timezone
1883 * The implementation of the malloc family of functions is completely replaced
1884 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1885 The implementation uses the mmap function (if available) and it is
1886 optimized for the use in multi threaded programs.
1888 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1889 functions. This new functionality is usable by specifying a special
1890 salt string and it is compatible with implementation on *BSD systems.
1892 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1893 `getsubopt' to handle second level command line options, `bsd_signal'
1894 to access BSD style `signal' functionality, the obsolete `regexp' style
1897 * the `lchown' function is available on system which support this
1900 * The implementation of the shadow password handling function was contributed
1903 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1905 * POSIX.1g support was added. The <sys/select.h> header is available,
1906 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1907 implementation of `getaddrinfo'.
1911 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1913 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1914 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1916 * The new function `daemon' from 4.4 BSD is useful for server programs that
1917 want to put themselves in the background.
1919 * Joel Sherrill has contributed support for several standalone boards that
1920 run without an operating system.
1922 * `printf', `scanf' and friends now accept a `q' type modifier for long
1923 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1925 * All of the code taken from BSD (notably most of the math and networking
1926 routines) has been updated from the BSD 4.4-Lite release.
1928 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1930 * The new functions `getdomainname' and `setdomainname' fetch or change the
1931 YP/NIS domain name. These are system calls which exist on systems which
1934 * The time zone data files have been updated for the latest international
1937 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1938 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1942 * The C library now includes support for Sun RPC, from Sun's free
1943 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1944 are included. (There is still no support for YP.)
1946 * Tom Quinn has contributed a port of the C library to SGI machines running
1947 Irix 4 (mips-sgi-irix4).
1949 * The new `lockf' function is a simplified interface to the locking
1950 facilities of `fcntl', included for compatibility.
1952 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1954 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1956 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1959 * The error message printed by `assert' for a failed assertion now includes
1960 the name of the program (if using GNU ld) and the name of the calling
1961 function (with versions of GCC that support this).
1963 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1965 * The library now includes the <sys/mman.h> header file and memory
1966 management functions `mmap', `munmap', `mprotect', `msync', and
1967 `madvise', on systems that support those facilities.
1969 * The interface for `mcheck' has changed slightly: the function called to
1970 abort the program when an allocation inconsistency is detected now takes
1971 an argument that indicates the type of failure. The new function
1972 `mprobe' lets you request a consistency check for a particular block at
1973 any time (checks are normally done only when you call `free' or `realloc'
1976 * It is now possible to easily cross-compile the C library, building on one
1977 system a library to run on another machine and/or operating system. All
1978 you need to do is set the variable `HOST_CC' in `configparms' to the
1979 native compiler for programs to run on the machine you are building on (a
1980 few generator programs are used on Unix systems); set `CC' to the
1983 * The new function `fexecve' (only implemented on the GNU system) executes
1984 a program file given a file descriptor already open on the file.
1988 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1989 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1991 * You can set the variable `libprefix' in `configparms' to specify a prefix
1992 to be prepended to installed library files; this makes it easy to install
1993 the GNU C library to be linked as `-lgnuc' or whatever.
1995 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1996 copies a limited number of characters from a string, and returns the
1997 address of the last character written.
1999 * You no longer need to check for whether the installed `stddef.h' is
2000 compatible with the GNU C library. configure now checks for you.
2002 * You can now define a per-stream `fileno' function to convert the
2003 stream's cookie into an integral file descriptor.
2005 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2006 allocates zero bytes of storage, and returns a unique pointer which
2007 you can pass to `realloc' or `free'. The behavior is undefined if
2008 you dereference this pointer.
2010 * The C library now runs on Sony NEWS m68k machines running either
2011 NewsOS 3 or NewsOS 4.
2013 * The new `syscall' function is a system-dependent primitive function
2014 for invoking system calls. It has the canonical behavior on Unix
2015 systems, including unreliable return values for some calls (such as
2016 `pipe', `fork' and `getppid').
2018 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2019 to `EAGAIN', which is the preferred name. On systems whose kernels
2020 use two distinct codes, the C library now translates EWOULDBLOCK to
2021 EAGAIN in every system call function.
2025 * The GNU C Library Reference Manual is now distributed with the library.
2026 `make dvi' will produce a DVI file of the printed manual.
2027 `make info' will produce Info files that you can read on line using C-h i
2028 in Emacs or the `info' program.
2029 Please send comments on the manual to bug-glibc-manual@gnu.org.
2031 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2033 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2035 * Jason Merrill has contributed a port to the Sequent Symmetry running
2036 Dynix version 3 (i386-sequent-dynix).
2038 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2039 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2041 * New function `memory_warnings' lets you arrange to get warnings when
2042 malloc is running out of memory to allocate, like Emacs gives you.
2044 * The C library now contains the relocating allocator used in Emacs 19 for
2045 its editing buffers. This allocator (ralloc) minimizes allocation
2046 overhead and fragmentation by moving allocated regions around whenever it
2047 needs to. You always refer to a ralloc'd region with a "handle" (a
2048 pointer to a pointer--an object of type `void **').
2050 * There is a new `printf' format: `%m' gives you the string corresponding
2051 to the error code in `errno'.
2053 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2054 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2055 pass, the `a' modifier says to fill in a `char **' you pass with a
2058 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2059 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2060 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2062 * `mkstemp' is a traditional Unix function to atomically create and open a
2063 uniquely-named temporary file.
2067 * The standard location for the file that says what the local timezone is
2068 has changed again. It is now `/usr/local/etc/localtime' (or more
2069 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2071 * The distribution no longer contains any files with names longer than 14
2074 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2075 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2077 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2081 * The configuration process has changed quite a bit. The `configure'
2082 script is now used just like the configuration scripts for other GNU
2083 packages. The `sysdeps' directory hierarchy is much rearranged.
2084 The file `INSTALL' explains the new scheme in detail.
2086 * The header files no longer need to be processed into ANSI C and
2087 traditional C versions. There is just one set of files to install, and
2088 it will work with ANSI or old C compilers (including `gcc -traditional').
2090 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2091 MIPS DECStation running Ultrix 4.
2093 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2094 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2095 made itself into a shared library.
2097 * Yet further improved support for the i386, running 4.3 BSD-like systems
2098 (such as Mach 3 with the Unix single-server), or System V.
2100 * New function `strncasecmp' to do case-insensitive string comparison
2101 with limited length.
2103 * New function `strsep' is a reentrant alternative to `strtok'.
2105 * New functions `scandir' and `alphasort' for searching directories.
2107 * New function `setenv' is a better interface to `putenv'.
2109 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2110 function for traversing a directory tree.
2112 * The GNU obstack package is now also part of the C library.
2113 The new function `open_obstack_stream' creates a stdio stream that
2114 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2115 formatted output directly to an obstack.
2117 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2118 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2120 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2122 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2123 things to your strings.
2125 * There are some new test programs: test-fseek, testmb, and testrand.
2127 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2128 These ports are not finished, but are a good starting place for really
2129 supporting those systems.
2131 * `/etc/localtime' is now the standard location for the file that says what
2132 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2133 This follows the general principle that `/etc' is the place for all local
2134 configuration files.
2136 * The C library header files now use `extern "C"' when used by the C++
2137 compiler, so the C library should now work with C++ code.
2139 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2140 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2143 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2144 function which uses the `merge sort' algorithm, and is said to be
2145 significantly faster than the old GNU `qsort' function. Merge sort is
2146 now the standard `qsort' function. The new algorithm can require a lot
2147 of temporary storage; so, the old sorting function is called when the
2148 required storage is not available.
2150 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2151 provides the Unix `crypt' function, plus some other entry points.
2153 * The code and header files taken from 4.4 BSD have been updated with the
2154 latest files released from Berkeley.
2156 ----------------------------------------------------------------------
2157 Copyright information:
2159 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2161 Permission is granted to anyone to make or distribute verbatim copies
2162 of this document as received, in any medium, provided that the
2163 copyright notice and this permission notice are preserved,
2164 thus giving the recipient permission to redistribute in turn.
2166 Permission is granted to distribute modified versions
2167 of this document, or of portions of it,
2168 under the above conditions, provided also that they
2169 carry prominent notices stating who last changed them.
2172 version-control: never
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