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, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6778, 6808, 9685,
13 9914, 10014, 10038, 10631, 10873, 11438, 11607, 11638, 12140, 13412,
14 13542, 13601, 13629, 13679, 13696, 13717, 13741, 13939, 13966, 14042,
15 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166, 14173, 14195,
16 14237, 14251, 14252, 14283, 14298, 14303, 14307, 14328, 14331, 14336,
17 14337, 14347, 14349, 14376, 14417, 14459, 14476, 14477, 14505, 14510,
18 14516, 14518, 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557,
19 14562, 14568, 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621,
20 14638, 14645, 14648, 14652, 14660, 14661, 14669, 14683, 14694, 14716,
21 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14805,
24 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
25 Optimized versions of memcpy, memset, and memcmp added for System z10 and
27 Implemented by Andreas Krebbel.
29 * The new function secure_getenv allows secure access to the environment,
30 returning NULL if running in a SUID/SGID process. This function replaces
31 the internal function __secure_getenv.
33 * SystemTap static probes have been added into the dynamic linker.
34 Implemented by Gary Benson.
36 * Optimizations of string functions strstr, strcasestr and memmem.
37 Implemented by Maxim Kuvyrkov.
39 * The minimum Linux kernel version that this version of the GNU C Library
40 can be used with is 2.6.16.
42 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
43 powerpc POWER7. Implemented by Will Schmidt.
45 * New configure option --disable-nscd builds the C library such that it
46 never attempts to contact the Name Service Caching Daemon (nscd).
47 New configure option --disable-build-nscd avoids building nscd itself;
48 this is the default if --disable-nscd is used.
50 * The ttyname and ttyname_r functions on Linux now fall back to searching for
51 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
52 allows creation of chroots without the procfs mounted on /proc.
54 * The `crypt' function now fails if passed salt bytes that violate the
55 specification for those values. On Linux, the `crypt' function will
56 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
57 enabled, and fail on encrypted strings using the MD5 or DES algorithm
58 when the mode is enabled.
60 * The `clock_*' suite of functions (declared in <time.h>) is now available
61 directly in the main C library. Previously it was necessary to link with
62 -lrt to use these functions. This change has the effect that a
63 single-threaded program that uses a function such as `clock_gettime' (and
64 is not linked with -lrt) will no longer implicitly load the pthreads
65 library at runtime and so will not suffer the overheads associated with
66 multi-thread support in other code such as the C++ runtime library.
70 * The following bugs are resolved with this release:
72 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
73 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
74 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
75 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
76 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
77 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
78 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
79 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
80 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
81 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
82 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
83 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
84 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
85 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
86 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
87 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
88 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
89 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
90 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
91 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
92 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
93 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
96 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
97 configuring glibc with:
98 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
99 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
100 Implemented by H.J. Lu.
104 + define static_assert
106 + do not declare gets
108 + declare at_quick_exit and quick_exit also for ISO C11
110 + aligned_alloc. NB: The code is deliberately allows the size parameter
111 to not be a multiple of the alignment. This is a moronic requirement
112 in the standard but it is only a requirement on the caller, not the
117 + uchar.h support added
119 + CMPLX, CMPLXF, CMPLXL added
121 Implemented by Ulrich Drepper.
123 * Support for the IA-64 has been moved to ports.
125 * Remove support for anything but ELF binary format
127 * Checking versions of poll, ppoll added.
128 Implemented by Ulrich Drepper.
130 * More generic and 64-bit performance optimizations to math functions.
131 Implemented by Ulrich Drepper.
133 * New configure option --enable-obsolete-rpc makes the deprecated RPC
134 headers and functions available at compile time as they were before
135 version 2.14. This option will be removed at some time in the future
136 after the TI-RPC library becomes fully sufficient for the needs of
137 existing applications.
139 * Compatibility code for Linux kernel versions before 2.4 has been removed.
140 Note that glibc is not expected to work with any Linux kernel version
143 * New header <sys/auxv.h> and function getauxval allowing easy access to
144 the AT_* key-value pairs passed from the Linux kernel. The header also
145 defines the HWCAP_* bits associated with the AT_HWCAP key.
147 * New locales: mag_IN
149 * New configure option --enable-systemtap builds SystemTap static probes
150 into libc for setjmp and longjmp and into libpthread for various operations.
151 So far the setjmp/longjmp probes and some of the libpthread probes are
152 provided only for i*86 and x86_64.
153 Implemented by Roland McGrath and Rayson Ho.
155 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
157 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
160 * More optimized functions for SPARC. Implemented by David S. Miller.
162 * Improved support for cross-compilation, especially bootstrap builds
163 without a previously built glibc.
165 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
166 Chris Metcalf from Tilera.
168 * Support for the old ARM ABI has been removed from ports. Only the EABI is
169 now supported for ARM processors.
171 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
172 as the name of the dynamic linker, to distinguish it from the
173 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
175 * Support for CRIS has been removed from ports.
177 * A new class of installed header has been documented for low-level
178 platform-specific functionality. PowerPC added the first instance with a
179 function to provide time base register access. Contributed by Tulio
180 Magno Quites Machado Filho.
182 * ix86 configurations now install header files that are consistent with
183 what x86-64 configurations install. These same header files can be used
184 for -m32, -m64, or -mx32 builds.
185 Contributed by H.J. Lu.
187 * Math library bug fixes. A thorough audit of all open math library bugs was
188 conducted by Joseph Myers. Significant progress was made on many math
189 library bugs resulting in more accurate exceptions and function results.
190 Many thanks to all those that contributed including Andreas Jaeger for his
191 patch review and work on the x87 trigonometric instruction issues.
193 * Timezone data is no longer installed. Timezone-related binaries and scripts
194 will continue to be installed. Users should obtain their timezone data from
195 their distribution provider or from the tzdata package at
196 <ftp://munnari.oz.au/pub/>.
200 * The following bugs are resolved with this release:
202 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
203 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
204 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
205 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
206 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
207 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
208 13484, 13506, 13515, 13523, 13524, 13538, 13540
210 * New program pldd to list loaded object of a process
211 Implemented by Ulrich Drepper.
213 * Add nss_db support back to glibc. No more dependency on Berkeley db
214 and support for initgroups lookups.
215 Implemented by Ulrich Drepper.
217 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
218 Contributed by HJ Lu.
220 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
221 Contributed by HJ Lu.
223 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
224 on x86-32 and x86-64.
225 Contributed by Liubov Dmitrieva.
227 * Optimized strchr and strrchr for SSE on x86-32.
228 Contributed by Liubov Dmitrieva.
230 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
231 for x86-64 and x86-32.
232 Contributed by Liubov Dmitrieva.
234 * New interfaces: scandirat, scandirat64
235 Implemented by Ulrich Drepper.
237 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
238 Implemented by Ulrich Drepper.
240 * nscd now also caches the netgroup database.
241 Implemented by Ulrich Drepper.
243 * Integrate libm with gcc's -ffinite-math-only option.
244 Implemented by Ulrich Drepper.
246 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
247 to math functions. Implemented by Ulrich Drepper.
249 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
250 Implemented by Ulrich Drepper.
252 * New Linux interfaces: process_vm_readv, process_vm_writev
254 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
255 Implemented by Ulrich Drepper.
257 * Optimized nearbyint and strcasecmp for PPC.
258 Implemented by Adhemerval Zanella.
260 * New locales: bho_IN, unm_US, es_CU, ta_LK
264 * The following bugs are resolved with this release:
266 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
267 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
268 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
269 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
270 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
271 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
272 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
273 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
274 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
275 12795, 12811, 12813, 12814, 12841
277 * The RPC implementation in libc is obsoleted. Old programs keep working
278 but new programs cannot be linked with the routines in libc anymore.
279 Programs in need of RPC functionality must be linked against TI-RPC.
280 The TI-RPC implementation is IPv6 enabled and there are other benefits.
282 Visible changes of this change include (obviously) the inability to link
283 programs using RPC functions without referencing the TI-RPC library and the
284 removal of the RPC headers from the glibc headers.
285 Implemented by Ulrich Drepper.
287 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
288 syncfs, setns, sendmmsg
290 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
291 yue_HK, lij_IT, mhr_RU
293 * New encodings: CP770, CP771, CP772, CP773, CP774
295 * New program sotruss to trace calls through PLTs
296 Implemented by Ulrich Drepper.
298 * The malloc hook implementation is marked deprecated and will be removed
299 from the default implementation in the next version. The design never
300 worked ever since the introduction of threads. Even programs which do
301 not create threads themselves can use multiple threads created internally.
305 * The following bugs are resolved with this release:
307 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
308 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
309 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
310 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
313 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
315 * POWER7 optimizations: memset, memcmp, strncmp
317 * New optimized string functions for x86-64: strnlen (SSE2),
318 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
319 Implemented by Ulrich Drepper.
323 * The following bugs are resolved with this release:
325 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
326 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
327 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
328 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
329 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
330 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
331 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
332 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
334 * New interfaces: pthread_getname_np, pthread_setname_np
336 * New Linux interface: recvmmsg
338 * STT_GNU_IFUNC implemented for Sparc by David Miller.
340 * The dynamic linker now recognizes supported ABI versions from the
341 EI_ABIVERSION field in the ELF header.
342 Implemented by Ulrich Drepper.
344 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
345 will not be used to fill in password fields in the passwd.byname replies.
346 Instead it is used to synthesize the shadow.byname table, should it be
347 missing. This is a useful mode in some installations involving Solaris.
348 Implemented by Ulrich Drepper.
350 * New locales: kok_IN, sq_MK, cv_RU
354 * The following bugs are resolved with this release:
356 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
357 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
358 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
359 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
360 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
361 10789, 10817, 10823, 10840, 10847
363 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
365 Implemented by Ulrich Drepper.
367 * Checking version of longjmp added that fails if an uninitialized stack
368 frame would be created. Implemented by Ulrich Drepper.
370 * STT_GNU_IFUNC is now supported in static executables.
371 Implemented by H.J. Lu.
373 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
375 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
376 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
377 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
378 Contributed by H.J. Lu.
380 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
381 Implemented by Ulrich Drepper.
383 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
385 Contributed by H.J. Lu.
387 * Support for fma instruction in AVX on x86-64.
388 Implemented by H.J. Lu and Ulrich Drepper.
390 * AVX support in x86-64 auditing support in ld.so.
391 Implemented by H.J. Lu.
393 * STB_GNU_UNIQUE support added.
394 Implemented by Ulrich Drepper.
396 * Implement second fallback mode for optimized DNS lookup for even more
397 broken environments. If two requests from the same port are not
398 handled correctly close the socket and open a new one before sending
399 the second request. The 'single-request-reopen' option in /etc/resolv.conf
400 can be used to select this mode right away, instead of rediscovering the
401 necessity is every process again.
402 Implemented by Ulrich Drepper.
404 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
405 Implemented by Adam Tkac.
407 * Optimized iconv conversions for S390x.
408 Implemented by Andreas Krebbel.
410 * Using condvars with PI mutexes is now more efficient due to kernel
411 support for requeueing to PI futexes. NPTL support added for x86-64.
412 Implemented by Ulrich Drepper.
414 * New locales: ps_AF, my_MM
418 * The following bugs are resolved with this release:
420 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
421 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
422 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
423 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
424 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
426 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
427 Implemented by Ulrich Drepper.
429 * New Linux interfaces: accept4, fallocate, fallocate64.
430 Implemented by Ulrich Drepper.
432 * Correct declarations of string function when used in C++ code. This
433 could lead to compile errors for invalid C++ code.
435 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
438 * New POSIX 2008 interface: psiginfo
439 Implemented by Ulrich Drepper.
441 * New ISO C++1x interfaces: quick_exit, at_quick_exit
442 Implemented by Ulrich Drepper.
444 * Support for selecting between multiple function definitions at runtime
445 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
447 * The libcrypt library can now use the hash function implementations in
448 NSS. Implemented by Ulrich Drepper.
450 * The malloc implementation can be compiled to be less memory efficient
451 but higher performing in multi-threaded programs.
452 Implemented by Ulrich Drepper.
454 * New locales: nan_TW@latin, ks_IN
456 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
457 Implemented by Ulrich Drepper.
459 * Extended printf hook support. It is possible to use user-defined types
460 and extend existing format specifiers.
461 Implemented by Ulrich Drepper.
463 * Handling for group shadow files has been added.
464 Implemented by Ulrich Drepper.
466 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
467 servers (the case, e.g., for some people using the built-in DNS
468 server in ADSL modems/routers). There is a once-per-process timeout
469 in case of a broken server. To avoid it, users can run nscd or put
470 'options single-request' in /etc/resolv.conf.
471 Implemented by Ulrich Drepper.
475 * The following bugs are resolved with this release:
477 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
478 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
479 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
480 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
481 6968, 6974, 6980, 6995, 7008, 7009, 7029
483 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
484 up at the same time. Implemented by Ulrich Drepper.
486 * TLS descriptors for LD and GD on x86 and x86-64.
487 Implemented by Alexandre Oliva.
489 * getaddrinfo now handles DCCP and UDPlite.
490 Implemented by Ulrich Drepper.
492 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
493 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
494 Implemented by Ulrich Drepper.
496 * New implementation of memmem, strstr, and strcasestr which is O(n).
497 Implemented by Eric Blake.
499 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
501 * Implement "e" option for popen to open file descriptor with the
502 close-on-exec flag set. Implemented by Ulrich Drepper.
504 * Implement "b" mode for fmemopen. In this mode writes writes don't
505 implicitly add a NUL byte and seeks from the end of the buffer really
506 use the buffer end, not the string length as the basis.
507 Implemented by Ulrich Drepper.
509 * Many functions, exported and internal, now atomically set the close-on-exec
510 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
512 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
514 Implemented by Pravin Satpute.
516 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
520 * The following bugs are resolved with this release:
522 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
523 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
524 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
525 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
526 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
527 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
528 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
530 * New locales: bo_CN, bo_IN, shs_CA.
532 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
534 * Sorting rules for some Indian languages (Devanagari and Gujarati).
535 Implemented by Pravin Satpute.
537 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
539 * nscd caches now all timeouts for DNS entries
540 Implemented by Ulrich Drepper.
542 * nscd is more efficient and wakes up less often.
543 Implemented by Ulrich Drepper.
545 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
546 vdprintf, and obstack_vprintf.
547 Implemented by Jakub Jelinek.
549 * Faster memset for x86-64.
550 Implemented by Harsha Jagasia and H.J. Lu.
552 * Faster memcpy on x86.
553 Implemented by Ulrich Drepper.
555 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
556 Implemented by Ulrich Drepper.
558 * Faster sqrt and sqrtf implemention for some PPC variants.
559 Implemented by Steven Munroe.
563 * The following bugs are resolved with this release:
565 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
566 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
567 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
568 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
569 5071, 5103, 5104, 5112, 5113, 5184, 5186
571 * More checking functions: fread, fread_unlocked, open*, mq_open.
572 Implemented by Jakub Jelinek and Ulrich Drepper.
574 * Extend fortification to C++. Implemented by Jakub Jelinek.
576 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
577 by not recognizing 'a' as a modifier when those specs are requested.
578 Implemented by Jakub Jelinek.
580 * PPC optimizations to math and string functions.
581 Implemented by Steven Munroe.
583 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
584 options to be passed. Implemented by Ulrich Drepper.
586 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
588 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
589 Implemented by Ulrich Drepper.
591 * Handle private futexes in the NPTL implementation.
592 Implemented by Jakub Jelinek and Ulrich Drepper.
594 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
595 Implemented by Roland McGrath and Ulrich Drepper.
597 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
599 * SHA-256 and SHA-512 based password encryption.
600 Implemented by Ulrich Drepper.
602 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
603 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
606 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
607 Implemented by Ulrich Drepper.
611 * The following bugs are resolved with this release:
613 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
614 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
615 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
616 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
617 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
618 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
619 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
622 * New Linux interfaces: epoll_pwait, sched_getcpu.
624 * New generic interfaces: strerror_l.
626 * nscd can now cache the services database. Implemented by Ulrich Drepper.
630 * The following bugs are resolved with this release:
632 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
633 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
634 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
635 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
636 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
637 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
638 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
639 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
640 3225, 3251, 3252, 3253, 3273
642 * For Linux, the sorting of addresses returned by getaddrinfo now also
643 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
644 Implemented by Ulrich Drepper.
646 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
647 Implemented by Ulrich Drepper.
649 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
651 * New iconv module for MIK. Contributed by Alexander Shopov.
653 * For sites with broken group and/or passwd database, the auto-propagate
654 option of nscd can prevent creating ID lookup entries from the results
655 of a name lookup and vice versa. This usually is no problem but some
656 site might have problems with the default behavior.
657 Implemented by Ulrich Drepper.
659 * Iterating over entire database in NIS can be slow. With the
660 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
661 to trade time for memory. The entire database will be read at once.
662 Implemented by Ulrich Drepper.
664 * The interfaces introduced in RFC 3542 have been implemented by
667 * Support for the new ELF hash table format was added by Ulrich Drepper.
669 * Support for priority inheritance mutexes added by Jakub Jelinek and
672 * Support for priority protected mutexes added by Jakub Jelinek.
674 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
675 or_IN, csb_PL, fy_NL, sr_ME.
679 * More overflow detection functions.
681 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
682 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
684 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
685 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
686 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
687 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
688 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
689 by Masahide Washizawa.
691 * It is now possible to install audit libraries for the dynamic linker using
692 LD_AUDIT. Implemented by Ulrich Drepper.
694 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
695 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
696 For a libc and libpthread that works well on Linux 2.4 kernels, we
697 recommend using the stable 2.3 branch.
699 * The new function open_wmemstream acts like open_memstream,
700 but uses a wchar_t wide character buffer.
702 * The new function ppoll is an improved version of poll, similar to pselect.
704 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
705 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
706 renameat, unlinkat, linkat, symlinkat, readlinkat.
708 * New Linux kernel system calls: unshare,
709 inotify_init, inotify_add_watch, inotify_rm_watch.
711 * The euidaccess function is now also known by the alias eaccess,
712 for compatibility with some other systems.
714 * Timezone data updated to 2006b version.
718 * The following bugs are resolved with this release:
720 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
721 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
722 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
723 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
724 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
725 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
727 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
729 * As of this release, GCC 4 can be used to compile the C Library.
731 * Timezone data updated to 2005m version.
735 * The following bugs are resolved with this release:
737 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
738 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
739 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
740 777, 787, 821, 822, 823, 825
742 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
746 * Support for RFC 3678. Real implementations exist only for Linux so far.
747 Implemented by Ulrich Drepper.
749 * nscd can now cache entries persistently. Expiring entries are reloaded.
750 For speedups the cache can be shared in memory with client processes.
751 Implemented by Ulrich Drepper.
753 * nscd can now perform SELinux checks.
754 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
756 * getaddrinfo queries are now cached. Canonical name lookup is performed
758 Implemented by Ulrich Drepper.
760 * The nothrow function attribute is used when headers are used by gcc when
761 compiling C code. This can avoid significant amounts of exception
764 * The malloc functions perform more error checking and are stricter when
765 it comes to reacting on errors. The default action is to terminate
766 the process after showing an error message. Implemented by Ulrich Drepper.
768 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
769 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
771 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
772 namespaces using the new function dlmopen(). This feature is of course,
773 like most other dynamic loading functionality, not available in statically
774 linked applications. Implemented by Ulrich Drepper.
776 * Low-overhead boundary checking variants of string and some stdio functions
777 were added. These are to be used in conjunction with a gcc patch by
778 Jakub Jelinek which adds calls to these functions if possible.
779 Implemented by Jakub Jelinek and Ulrich Drepper.
781 * Old code for several operating systems and machine architectures that
782 have not been in working condition in a long time have been removed from
783 the main source tree maintained by the GNU C Library's maintainers.
784 These files are now reside in the separate `ports' source module
785 that is usable as an add-on when building the library.
789 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
790 interrogate the dynamic linker, compatible with the Solaris interface.
792 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
793 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
795 * getifaddrs now uses the netlink interface on Linux to get its information.
796 Implemented by Thorsten Kukuk.
798 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
799 Implemented by Ulrich Drepper.
801 * support for non-executable stacks on x86 has been added. Changes mostly
804 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
807 * getaddrinfo now performs destination address selection according to
812 * Thread-safe interfaces for many functions that access locale data
813 were added in version 2.3, but these features were omitted from NEWS.
814 Many functions have variants with an `_l' suffix that take a `locale_t'
815 object as a parameter rather than consulting the current locale.
816 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
817 create and maintain `locale_t' objects. Additionally, the new function
818 `uselocale' sets "the current locale" (as used by functions not so
819 parameterized) set for an individual thread. These features were added
820 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
822 * The functions getresuid, getresgid, setresuid, and setresgid, which
823 have long been available on Linux, are now declared in <unistd.h>
824 and are now also available on the Hurd.
826 * ELF thread-local storage support (TLS) now works on x86-64.
828 * The new dynamic string token $LIB is expanded in shared library names.
829 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
831 * Aldy Hernandez contributed complete software floating point support for
832 PowerPC machines with no FPU.
834 * fexecve is implemented on Linux.
836 * The `btowc' function should work at least twice as fast due to
837 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
839 * With approriate thread add-ons cancelable functions are now implemented
840 in libc.so as well. No need to call the function in libpthread. This
841 change allowed to finally disable the incorrect and expensive handling
842 of weak definition in ld.so.
844 * Yet more PLT entries in libc.so have been removed. We finally arrived
845 at the bare minimum. Startup times improved appropriately.
847 * Support for the new Linux/x86 system call interface was added. The
848 AT_SYSINFO auxiliary vector entry is recognized and handled.
852 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
855 * iconv (the program and the interface) now accepts empty names (excluding
856 options like //TRANSLIT) to mean "use charset of current locale".
858 * localedef can now transliterate characters in strings which are not in
859 the provided charmap. The information from the input locale is used.
861 * Prelinking support was added for ELF targets. This requires additional
862 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
864 * Read-only stdio streams now use mmap to speed up operation by eliminating
865 copying and buffer underflows. To use add 'm' to the mode string of
866 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
868 * The malloc functions were completely rewritten by Wolfram Gloger based
869 on Doug Lea's malloc-2.7.0.c.
871 * Isamu Hasegawa contributed a completely new and POSIX-conformant
872 implementation of regex.
874 * Bruno Haible upgraded the iconv and locale implementation to support
877 * Contents of the LC_* and LANG environment variables in the CEN style are
878 not recognized anymore. It never was used. Change by Ulrich Drepper.
880 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
881 thread-local storage (TLS) ABI on some platforms.
882 Changes by Ulrich Drepper. SH support by Kaz Kojima.
884 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
885 EUC-JISX0213, and TSCII.
887 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
888 BSD-compatible interface for getting all network interface addresses.
889 Implementation for IPv4 by Roland McGrath.
891 * Loading of locale data is faster due to the introduction of a locale
892 archive. Implemented by Roland McGrath and Ulrich Drepper.
894 * Startup times are significantly reduced by not using exported functions
895 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
898 * Steven Munroe contributed a port to PowerPC64/Linux.
902 * The Hurd now uses the GNU libio implementation of stdio rather than the
903 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
905 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
906 with the same behavior as the Linux system call of the same name.
910 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
911 128-bit long double format.
913 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
914 IBM1161, and IBM1162 charsets.
916 * Andreas Jaeger contributed a port to x86-64/Linux.
918 * Peter Bruin contributed a port to PowerPC/Hurd.
920 * libc functions using I/O streams now can handle wide-oriented streams
923 * optimizations in the dynamic linker. Binaries created by recent binutils
924 versions start up quicker due to reduced time spent on relocations.
926 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
930 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
931 asinh, atanh, j0 for the 128-bit long double format.
933 * Bruno Haible updated all the code handling Unicode in some form to
936 * Speed of regex for single-byte locales is back to previous levels.
937 Patch by Isamu Hasegawa.
939 * Alpha, SPARC, and IA-64 now also using floating stacks.
941 * Startup time of internationalized applications greatly improved through
942 iconv cache. Use iconvconfig to generate the cache file.
943 Contributed by Ulrich Drepper.
945 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
946 severe performance problems. Patch by David Mosberger.
948 * The Hurd port got a lot more functionality like AIO, various stdio
949 extensions, etc. Mainly done by Roland McGrath.
951 * mtrace can now lookup symbols in shared libraries.
955 * Intel's IA-64 math library is largely integrated. It provides fast and
956 accurate implementatations for most basic and standard math functions
957 in float, double, and long double format.
959 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
960 and asin for the 96-bit long double format and asin, log, tan for the
961 128-bit long double format.
963 * The beginning of a last-bit accurate math library by IBM Haifa were added.
964 The basic double functions exist today. Contributed by Abraham Ziv
965 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
966 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
968 * An asynchronous name lookup library was added. The interface is designed
969 after POSIX AIO. The proposal was circulated beforehand to get comments.
970 No negative ones came in. Implemented by Ulrich Drepper.
972 * Port to S390/64bit contributed by Martin Schwidefsky
973 <schwidefsky@de.ibm.com>.
975 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
976 of functions for Linux/IA-64.
978 * The RPC code is now thread safe. Threads can now use the same service
979 of different services at the same time. Patch by Eric Norum
980 <eric.norum@usask.ca> with some help by Ulrich Drepper.
982 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
983 family of functions for Linux/S390.
985 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
986 of functions for Linux/x86.
988 * Port to Linux/CRIS contributed by Axis Communications.
992 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
993 we can now check for namespace violations and missing declarations. The
994 result is that almost all headers are now Unix-compliant (as defined in
995 the upcoming XPG6). The negative side is that some programs might need
996 corrections, too, if they depend on the incorrect form of the headers in
997 previous versions which defined too many symbols and included too many
1000 * regex now handles multibyte character sets correctly.
1001 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1003 * iconv (the program) does now conform to the upcoming XPG6 and handles
1004 charmaps. Instead of the charset names the path of charmaps can be
1005 provided and the conversion happens based on this data.
1006 Contributed by Ulrich Drepper.
1008 * The locale program now provides detailed information about the installed
1013 only lists the names of the supported locales
1017 provides details such as country, language, and codeset name.
1018 Contributed by Ulrich Drepper.
1022 * The gencat program now parses the input file according to the charset
1023 selected by the LC_CTYPE category. This is important for stateful
1024 character sets. To make generating catalogs easier there is a way
1025 to overwrite the charset selected by the locale: before the first
1026 message or $ quote line the catalog can contain a line like
1028 $ codeset=ISO-8859-2
1030 to select the charset (ISO-8859-2 in this case).
1032 Implemented by Shinya Hanataka and Ulrich Drepper.
1034 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1035 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1036 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1038 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1039 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1041 * The LANGUAGE environment variable is now ignored unless the locale is
1042 changed from the default "C" locale.
1044 * The usual bug fixes.
1048 * Greg McGary added runtime support for bounds checking using gcc's
1049 new -fbounded-pointers option. ix86 target is complete. PowerPC
1052 * Thorsten Kukuk added secure mode support to nscd.
1054 * The Berkeley db libraries have been removed.
1056 Related, the nss_db module is now in a separate package since it
1057 obviously requires a database library being available.
1059 * Wide character I/O streams implemented by Ulrich Drepper.
1061 * Functions from the extended socket API added by Ulrich Drepper.
1063 * Functions feenableexcept and fedisableexcept to control the
1064 behaviour of individual exceptions have been added by Andreas Jaeger.
1066 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1068 * The resolver code has been updated from bind 8.2.3-T5B which supports
1069 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1072 This change could in some situations effect backward compatibility. Since
1073 now `_res' is a thread-local instead of a global variable, modifying it
1074 in one thread does not have any effect in other threads.
1076 The resolver library was also extended to allow IPv6 as the transport
1077 protocol for the requests. This work was done by Stig Venaas.
1079 * Compatibility code for K&R C compilers has been removed from the
1080 header files. A ISO C compiler is needed to use the library
1081 (conforming to either C89 or C99 standard).
1083 * Complete rewrite of the localedef program to support multibyte character
1084 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1085 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1086 Implemented by Ulrich Drepper.
1088 Bruno Haible significantly improved the generation and use of the data
1089 structures for the wide character tables.
1091 * Plural handling in gettext implemented by Ulrich Drepper.
1093 * The utmp daemon has been removed.
1095 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1097 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1100 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1102 * POSIX barriers implemented by Kaz Kylheku.
1104 * POSIX spawn function family implemented by Ulrich Drepper.
1106 * POSIX spinlocks are now available.
1108 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1110 * the configure option --enable-kernel=X.Y.Z allows to strip out
1111 compatibility for kernel versions before X.Y.Z. This is currently only
1112 implemented for Linux.
1114 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1115 field sin6_scope_id. This means that all programs using IPv6 should be
1116 recompiled. Don't expect binary compatibility with previous glibc
1119 * various conversion modules for IBM character sets contributed by
1122 * IA-64 port by Jes Sorensen and HJ Lu.
1136 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1138 * New xdr functions are added; some rpc functions are now 64bit clean.
1140 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1142 * Fixed known incompatibilities with glibc 2.0.
1144 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1146 * Optimized a number of functions (especially the ELF dynamic loader).
1148 * Update timezone data files.
1150 * lots of charmaps corrections
1152 * some new locale definitions and charmaps
1157 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1158 conform to POSIX member type requirements. Symbol versions have been
1159 adjusted as needed within the library, and for direct use by applications,
1160 but there is potential for problems if third-party libraries use
1161 struct timeval as part of their interface. This does not present
1162 a problem for X and other "essential" system libraries.
1164 * An additional locale model to support C++ Standard Library locale
1165 model and probably more was implemented by Ulrich Drepper.
1167 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1170 * Miles Bader provided the `argp' function family to support hierachical
1171 command line argument parsing, layered on top of getopt.
1173 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1175 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1178 * scanf recognizes the %a and %A format for scanning floating point numbers.
1180 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1181 information and interfaces for the available integer types.
1183 * about 130 new math functions were added to implement the ISO C9x math
1186 * the new header <complex.h> contains definitions of the complex math
1187 functions from ISO C 9X.
1189 * the new header <tgmath.h> defines generic macros to use complex or
1190 real valued functions.
1192 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1194 * Andreas Jaeger provided a test suite for the math library.
1196 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1198 * Ulrich Drepper added character set conversion functions (iconv).
1200 * Optimized string functions have been added.
1202 * The localedata addon is now part of glibc.
1204 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1206 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1207 daemon for NSS (nscd).
1209 Missing a better place here are some numbers on improvements. Under
1210 Linux 2.1.125 un-tar-ing the kernel sources takes
1214 using local files 12.19s 6.88s 22.91s
1216 using NIS 13.92s 8.91s 26.34s
1218 using NIS & nscd 10.37s 7.34s 25.30s
1220 using NIS+ 27.57s 30.37s 640.46s
1222 using NIS+ & nscd 10.25s 7.83s 26.51s
1224 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1226 Keep in mind that non-namelookup related operations dominate above times.
1227 It was just a common complain that using NIS+ unpacking the kernel is
1230 [1] The old nscd implementation is not available anymore since it was
1231 distributed with glibc up to version 2.0.98 and thus is now replaced.
1233 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1235 * Mark Kettenis provided a Hesiod NSS module.
1237 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1238 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1240 * rcmd can now handle netgroups (Dick Streefland).
1242 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1245 * Support for the IPv6 protocol has been added to the socket API, as per the
1246 latest draft standards.
1248 * Support for Linux 2.2 has been added.
1250 * Interface changes relative to the latest 2.0.x release:
1251 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1252 addseverity NEW: Unix98
1253 alphasort64 NEW: LFS
1254 argp_err_exit_status NEW: argp, GNU ext
1255 argp_error NEW: argp, GNU ext
1256 argp_failure NEW: argp, GNU ext
1257 argp_help NEW: argp, GNU ext
1258 argp_parse NEW: argp, GNU ext
1259 argp_program_bug_address NEW: argp, GNU ext
1260 argp_program_version NEW: argp, GNU ext
1261 argp_program_version_hook NEW: argp, GNU ext
1262 argp_state_help NEW: argp, GNU ext
1263 argp_usage NEW: argp, GNU ext
1264 authdes_create NEW: Secure RPC
1265 authdes_getucred NEW: Secure RPC
1266 authdes_pk_create NEW: Secure RPC
1267 backtrace NEW: GNU ext.
1268 backtrace_symbols NEW: GNU ext.
1269 backtrace_symbols_fd NEW: GNU ext.
1271 cacosf NEW: ISO C 9x
1272 cacosh NEW: ISO C 9x
1273 cacoshf NEW: ISO C 9x
1274 cacoshl NEW: ISO C 9x
1275 cacosl NEW: ISO C 9x
1282 casinf NEW: ISO C 9x
1283 casinh NEW: ISO C 9x
1284 casinhf NEW: ISO C 9x
1285 casinhl NEW: ISO C 9x
1286 casinl NEW: ISO C 9x
1288 catanf NEW: ISO C 9x
1289 catanh NEW: ISO C 9x
1290 catanhf NEW: ISO C 9x
1291 catanhl NEW: ISO C 9x
1292 catanl NEW: ISO C 9x
1293 cbc_crypt NEW: Secure RPC
1297 ccoshf NEW: ISO C 9x
1298 ccoshl NEW: ISO C 9x
1304 cimagf NEW: ISO C 9x
1305 cimagl NEW: ISO C 9x
1306 clearerr_locked REMOVED
1307 clntunix_create NEW: sunrpc ext
1309 clog10 NEW: ISO C 9x
1310 clog10f NEW: ISO C 9x
1311 clog10l NEW: ISO C 9x
1321 cprojf NEW: ISO C 9x
1322 cprojl NEW: ISO C 9x
1324 crealf NEW: ISO C 9x
1325 creall NEW: ISO C 9x
1330 csinhf NEW: ISO C 9x
1331 csinhl NEW: ISO C 9x
1334 csqrtf NEW: ISO C 9x
1335 csqrtl NEW: ISO C 9x
1339 ctanhf NEW: ISO C 9x
1340 ctanhl NEW: ISO C 9x
1342 des_setparity NEW: Secure RPC
1343 ecb_crypt NEW: Secure RPC
1344 endutxent NEW: Unix98
1346 exp10f NEW: ISO C 9x
1347 exp10l NEW: ISO C 9x
1351 fattach NEW: STREAMS
1352 fdetach NEW: STREAMS
1356 feclearexcept NEW: ISO C 9x
1357 fegetenv NEW: ISO C 9x
1358 fegetexceptflag NEW: ISO C 9x
1359 fegetround NEW: ISO C 9x
1360 feholdexcept NEW: ISO C 9x
1362 feraiseexcept NEW: ISO C 9x
1363 ferror_locked REMOVED
1364 fesetenv NEW: ISO C 9x
1365 fesetexceptflag NEW: ISO C 9x
1366 fesetround NEW: ISO C 9x
1367 fetestexcept NEW: ISO C 9x
1368 feupdateenv NEW: ISO C 9x
1369 fflush_locked REMOVED
1373 fgets_unlocked NEW: GNU ext.
1374 fileno_locked REMOVED
1386 fputc_locked REMOVED
1387 fputs_unlocked NEW: GNU ext.
1388 fread_unlocked NEW: GNU ext.
1393 fstatvfs NEW: Unix98
1397 ftruncate64 NEW: LFS
1399 fwrite_unlocked NEW: GNU ext.
1400 gai_strerror NEW: IPv6
1404 getchar_locked REMOVED
1406 getdate_err NEW: Unix98
1407 getdate_r NEW: GNU ext.
1409 getnameinfo NEW: IPv6
1410 getnetname NEW: Secure RPC
1411 getpmsg NEW: STREAMS
1412 getpt NEW: Unix98 PTY
1413 getrlimit64 NEW: LFS
1414 getutxent NEW: Unix98
1415 getutxid NEW: Unix98
1416 getutxline NEW: Unix98
1417 glob64 NEW: GNU ext.
1418 globfree64 NEW: GNU ext.
1419 gnu_get_libc_release NEW: GNU ext.
1420 gnu_get_libc_version NEW: GNU ext.
1421 grantpt NEW: Unix98 PTY
1422 host2netname NEW: Secure RPC
1424 iconv_close NEW: iconv
1425 iconv_open NEW: iconv
1426 if_freenameindex NEW: IPv6
1427 if_indextoname NEW: IPv6
1428 if_nameindex NEW: IPv6
1429 if_nametoindex NEW: IPv6
1430 in6addr_any NEW: IPv6
1431 in6addr_loopback NEW: IPv6
1432 inet6_isipv4mapped NEW: IPv6
1433 isastream NEW: STREAMS
1434 iswblank NEW: GNU ext.
1435 key_decryptsession NEW: Secure RPC
1436 key_decryptsession_pk NEW: Secure RPC
1437 key_encryptsession NEW: Secure RPC
1438 key_encryptsession_pk NEW: Secure RPC
1439 key_gendes NEW: Secure RPC
1440 key_get_conv NEW: Secure RPC
1441 key_secretkey_is_set NEW: Secure RPC
1442 key_setnet NEW: Secure RPC
1443 key_setsecret NEW: Secure RPC
1444 llrint NEW: ISO C 9x
1445 llrintf NEW: ISO C 9x
1446 llrintl NEW: ISO C 9x
1447 llround NEW: ISO C 9x
1448 llroundf NEW: ISO C 9x
1449 llroundl NEW: ISO C 9x
1454 lrintf NEW: ISO C 9x
1455 lrintl NEW: ISO C 9x
1456 lround NEW: ISO C 9x
1457 lroundf NEW: ISO C 9x
1458 lroundl NEW: ISO C 9x
1460 makecontext NEW: Unix98
1461 mempcpy NEW: GNU ext.
1464 modify_ldt NEW: kernel
1468 nearbyint NEW: ISO C 9x
1469 nearbyintf NEW: ISO C 9x
1470 nearbyintl NEW: ISO C 9x
1471 netname2host NEW: Secure RPC
1472 netname2user NEW: Secure RPC
1473 nexttoward NEW: ISO C 9x
1474 nexttowardf NEW: ISO C 9x
1475 nexttowardl NEW: ISO C 9x
1479 passwd2des NEW: Secure RPC
1481 pow10f NEW: GNU ext.
1482 pow10l NEW: GNU ext.
1485 printf_size NEW: GNU ext.
1486 printf_size_info NEW: GNU ext.
1487 profil_counter REMOVED
1488 pthread_mutexattr_getkind_np REPLACED
1489 pthread_mutexattr_setkind_np REPLACED
1490 ptsname NEW: Unix98 PTY
1491 ptsname_r NEW: Unix98 PTY
1493 putchar_locked REMOVED
1494 putgrent NEW: GNU ext.
1496 putpmsg NEW: STREAMS
1497 pututxline NEW: Unix98
1501 readdir64_r NEW: LFS
1502 remquo NEW: ISO C 9x
1503 remquof NEW: ISO C 9x
1504 remquol NEW: ISO C 9x
1506 roundf NEW: ISO C 9x
1507 roundl NEW: ISO C 9x
1509 scalbln NEW: ISO C 9x
1510 scalblnf NEW: ISO C 9x
1511 scalblnl NEW: ISO C 9x
1513 sendfile NEW: kernel
1514 setcontext NEW: Unix98
1515 setrlimit64 NEW: LFS
1516 setutxent NEW: Unix98
1518 sigignore NEW: Unix98
1519 sigqueue NEW: POSIX.1b
1520 sigrelse NEW: Unix98
1521 sigset NEW: POSIX.1b
1522 sigtimedwait NEW: POSIX.1b
1523 sigwaitinfo NEW: POSIX.1b
1524 sincos NEW: GNU ext.
1525 sincosf NEW: GNU ext.
1526 sincosl NEW: GNU ext.
1530 strcasestr NEW: GNU ext.
1531 strtoimax NEW: ISO C 9x
1532 strtoumax NEW: ISO C 9x
1533 strverscmp NEW: GNU ext.
1534 svcauthdes_stats NEW: Secure RPC
1535 svcunix_create NEW: sunrpc etx
1536 svcunixfd_create NEW: sunrpc ext
1537 swapcontext NEW: Unix98
1538 tcgetsid NEW: Unix98 PTY
1539 tdestroy NEW: GNU ext.
1540 tgamma NEW: ISO C 9x
1541 tgammaf NEW: ISO C 9x
1542 tgammal NEW: ISO C 9x
1546 truncf NEW: ISO C 9x
1547 truncl NEW: ISO C 9x
1549 unlockpt NEW: Unix98 PTY
1550 updwtmpx NEW: Unix98
1551 user2netname NEW: Secure RPC
1552 utmpxname NEW: Unix98
1553 versionsort NEW: GNU ext.
1554 versionsort64 NEW: GNU ext.
1556 wcscasecmp NEW: GNU ext.
1557 wcsncasecmp NEW: GNU ext.
1558 wcsnlen NEW: GNU ext.
1559 wcstoimax NEW: ISO C 9x
1560 wcstoll NEW: ISO C 9x
1561 wcstoull NEW: ISO C 9x
1562 wcstoumax NEW: ISO C 9x
1564 wordexp NEW: POSIX.2
1565 wordfree NEW: POSIX.2
1566 write_profiling REMOVED
1567 xdecrypt NEW: Secure RPC
1568 xdr_authdes_cred NEW: Secure RPC
1569 xdr_authdes_verf NEW: Secure RPC
1570 xdr_cryptkeyarg NEW: Secure RPC
1571 xdr_cryptkeyarg2 NEW: Secure RPC
1572 xdr_cryptkeyres NEW: Secure RPC
1573 xdr_getcredres NEW: Secure RPC
1574 xdr_key_netstarg NEW: Secure RPC
1575 xdr_key_netstres NEW: Secure RPC
1576 xdr_keybuf NEW: Secure RPC
1577 xdr_keystatus NEW: Secure RPC
1578 xdr_netnamestr NEW: Secure RPC
1579 xdr_sizeof NEW: Secure RPC
1580 xdr_unixcred NEW: sunrpc ext
1581 xencrypt NEW: Secure RPC
1582 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1593 * inet_ntoa is thread-safe
1595 * updwtmp is moved from libutil to libc
1597 * rewrite of cbrt function
1599 * update of timezone data
1613 * add atoll function
1615 * fix complex problems in Berkeley DB code
1617 * fix math functions
1621 * fixed lots of header problems (especially Linux/GNU specific)
1623 * dynamic loader preserves all registers
1625 * Roland McGrath provided support for handling of auxiliary objects in
1626 the ELF dynamic loader.
1628 * support for parallel builds is improved
1632 * GNU extensions are no longer declared by default. To enable them you
1633 must define the macro `_GNU_SOURCE' in your program or compile with
1636 * The library has changed from using GNU ld symbol aliases to using weak
1637 symbols where available. The ELF object file format supports weak
1638 symbols; GNU ld also supports weak symbols in the a.out format. (There
1639 is also now support for other GNU ld extensions in ELF. Use the
1640 `--with-elf' option to configure to indicate you have ELF, and
1641 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1642 of many files which contained only symbol aliases, reducing the size of
1643 the source and the compiled library; many other files were renamed to
1644 less cryptic names previously occupied by the symbol alias files.
1645 There is a new header file <elf.h> for programs which operate on
1646 files in the ELF format.
1648 * Converted to Autoconf version 2, so `configure' has more options.
1649 Run `configure --help' to see the details.
1651 * The library can now be configured to build profiling, highly-optimized
1652 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1653 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1654 `configure' enable building these extra libraries. The shared library is
1655 built by default when using both ELF and GNU ld. When shared libraries
1656 are enabled, the new library `-ldl' is available for arbitrary run-time
1657 loading of shared objects; its interface is defined in <dlfcn.h>. The
1658 new header file <link.h> gives access to the internals of the run-time
1659 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1660 application of same name on other systems and it provides information
1661 about dynamically linked binaries.
1663 * The C library now provides the run-time support code for profiling
1664 executables compiled with `-pg'. Programs can control the profiling code
1665 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1666 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1667 the support for this file format was contributed by David Mosberger-Tang.
1669 * The math code has been replaced with a math library based on fdlibm from
1670 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1671 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1672 functions. The math functions now reside in a separate library, so
1673 programs using them will need to use `-lm' their linking commands.
1675 * John C. Bowman contributed optimized ix87 assembler inline functions.
1677 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1678 mechanism similar to that found in Solaris 2. This is now used for the
1679 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1680 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1681 file controls what services are used for each individual database. This
1682 works by loading shared libraries with names specified in `nsswitch.conf',
1683 so service modules can be changed or added at any time without even
1684 relinking any program. Currently there are the file, db, and NIS based
1685 NSS services available.
1687 * The new functions `strtoq' and `strtouq' parse integer values from
1688 strings, like `strtol' and `strtoul', but they return `long long int' and
1689 `unsigned long long int' values, respectively (64-bit quantities).
1691 * The new functions `strtof' and `strtold' parse floating-point values from
1692 strings, like `strtod', but they return `float' and `long double' values,
1693 respectively (on some machines `double' and `long double' are the same).
1695 * Ulrich Drepper has contributed new implementations of the floating-point
1696 printing and reading code used in the `printf' family of functions and
1697 `strtod', `strtof', and `strtold'. These new functions are perfectly
1698 accurate, and much faster than the old ones.
1700 * The implementation of the POSIX locale model was completely rewritten by
1701 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1702 to compile the POSIX locale definition.
1704 * The former dummy implementations of the strcoll and strxfrm function are
1705 now replaced by fully functional code contributed by Ulrich Drepper. The
1706 collation information comes from the POSIX locale definitions.
1708 * The new header <langinfo.h> defines an interface for accessing
1709 various locale-dependent data (using the locale chosen with `setlocale').
1711 * Ulrich Drepper has contributed a new suite of functions for operation on
1712 wide-character and multibyte-character strings, in <wchar.h>;
1713 and classification and case conversion of wide characters, in <wctype.h>.
1714 These new functions are conforming to the ISO C, Amendement 1 specification.
1716 * There is now a second implementation of the standard I/O library available.
1717 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1718 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1720 * You can now use positional parameter specifications in format strings
1721 for the `printf' and `scanf' families of functions. For example,
1722 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1723 ``Number 6, Mr Jones''. This is mainly useful when providing different
1724 format strings for different languages, whose grammars may dictate
1725 different orderings of the values being printed. To support this
1726 feature, the interface for `register_printf_handler' has changed; see
1727 the header file <printf.h> for details.
1729 * The `printf' and `scanf' families of functions now understand a new
1730 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1731 to group numbers as indicated by the locale; for `scanf' and friends, this
1732 says to accept as valid only a number with all the proper grouping
1733 separators in the right places. In the default "C" locale, numbers are
1734 not grouped; but locales for specific countries will define the usual
1735 conventions (i.e. separate thousands with `,' in the US locale).
1737 * The pgrp functions have been regularized, slightly incompatibly but much
1738 less confusingly. The core functions are now `getpgid' and `setpgid',
1739 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1740 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1741 provided for compatibility. There is no longer an incompatible `getpgrp'
1742 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1744 * The new header file <fts.h> and suite of functions simplify programs that
1745 operate on directory trees. This code comes from 4.4 BSD.
1747 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1748 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1749 NSS scheme used in glibc.
1751 * There is a new malloc debugging hook `__memalign_hook'.
1753 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1754 `unsigned int' in <sys/types.h>. These are for compatibility only and
1755 their use is discouraged.
1757 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1758 done differently, so that it works even without GNU ld.
1760 * New function `euidaccess' checks allowed access to a file like `access',
1761 but using the effective IDs instead of the real IDs.
1763 * The time zone data files have been updated for the latest and greatest
1764 local time conventions of the countries of the world.
1766 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1769 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1770 for formatting floating-point numbers. They are provided only for
1771 compatibility; new programs should use `sprintf' instead. There are
1772 also equivalent function for the `long double' floating-point type and
1773 all functions also exist in a reentrant form.
1775 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1776 functions for maintaining the login-record files (primarily of use to
1777 system programs such as `login'), and convenient functions for
1778 allocating and initializing a pseudo-terminal (pty) device.
1780 * Ulrich Drepper has contributed new support for System V style
1781 shared memory and IPC on systems that support it.
1783 * Ulrich Drepper has contributed several miscellaneous new functions found
1784 in System V: The `hsearch' family of functions provide an effective
1785 implementation of hash tables; `a64l' and `l64a' provide a very simple
1786 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1789 * Ulrich Drepper has contributed new reentrant counterparts for the
1790 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1792 * Ulrich Drepper has contributed new, highly-optimized versions of several
1793 string functions for the i486/Pentium family of processors.
1795 * Ulrich Drepper has updated the Linux-specific code, based largely
1796 on work done in Hongjiu Lu's version of GNU libc for Linux.
1797 The GNU library now supports Linux versions 2.0.10 and later,
1798 using the ELF object file format (i[3456]86-*-linux).
1800 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1802 * David Mosberger-Tang and Richard Henderson have ported the C library
1803 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1804 dynamic linking support for ELF/Alpha.
1806 * Richard Henderson contributed several Alpha optimized assembler function
1807 for arithmetic and string handling.
1809 * Ulrich Drepper has contributed a new set of message catalog functions to
1810 support multiple languages using the <libintl.h> interface, for use with
1811 his new package GNU gettext. Translation volunteers have contributed
1812 catalogs of the library's messages in Spanish, German, and Korean.
1814 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1815 program and the `catgets' function for reading the catalog files it
1816 creates. (The <libintl.h> interface is preferred; we include the
1817 <nl_types.h> interface using `catgets' only for source compatibility with
1818 programs already written to use it.)
1820 * New header file <values.h> gives SVID-compatible names for <limits.h>
1823 * Various new macros, declarations, and small header files for compatibility
1826 * New function `group_member' is a convenient way to check if a process has
1827 a given effective group ID.
1829 * When using GCC 2.7 and later, the socket functions are now declared in a
1830 special way so that passing an argument of type `struct sockaddr_in *',
1831 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1832 `struct sockaddr *' type, does not generate a type-clash warning.
1834 * New function `error' declared in header file <error.h> is a convenient
1835 function for printing error messages and optionally exiting; this is the
1836 canonical function used in GNU programs. The new functions `err', `warn',
1837 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1838 doing the same thing.
1840 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1841 POSIX.2 `glob' function to do ~ and {...} expansion.
1843 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1844 `clearenv' which is used in POSIX.9 is also available.
1846 * New function `getsid' returns session ID number on systems that support it.
1848 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1849 files <db.h> and <mpool.h> provide a rich set of functions for several
1850 types of simple databases stored in memory and in files, and <ndbm.h> is
1851 an old `ndbm'-compatible interface using the `db' functions. Link with
1852 `-ldb' to get these functions.
1854 * New macro `strdupa' copies a string like `strdup', but uses local stack
1855 space from `alloca' instead of dynamic heap space from `malloc'.
1857 * New function `strnlen' is like `strlen' but searches only a given maximum
1858 number of characters for the null terminator. `stpncpy', `strndup' and
1859 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1862 * New function `statfs' in header <sys/statfs.h>.
1864 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1865 provide convenient functions for operating on blocks of null-terminated
1868 * A new suite of functions in <utmp.h> handle all the details of reading
1869 and writing the utmp file.
1871 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1874 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1875 completely POSIX compliant and also implemented the extended functionality
1876 to handle alternate digit representation and alternate era date formats.
1878 * Ulrich Drepper provided an implementation of the `strptime' function
1879 defined in XPG4.2 which transforms a string into a `struct tm' value.
1881 * Paul Eggert provided the tzselect shell script as part of the timezone
1882 code. The shell script makes it easy to select the correct timezone
1885 * The implementation of the malloc family of functions is completely replaced
1886 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1887 The implementation uses the mmap function (if available) and it is
1888 optimized for the use in multi threaded programs.
1890 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1891 functions. This new functionality is usable by specifying a special
1892 salt string and it is compatible with implementation on *BSD systems.
1894 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1895 `getsubopt' to handle second level command line options, `bsd_signal'
1896 to access BSD style `signal' functionality, the obsolete `regexp' style
1899 * the `lchown' function is available on system which support this
1902 * The implementation of the shadow password handling function was contributed
1905 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1907 * POSIX.1g support was added. The <sys/select.h> header is available,
1908 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1909 implementation of `getaddrinfo'.
1913 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1915 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1916 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1918 * The new function `daemon' from 4.4 BSD is useful for server programs that
1919 want to put themselves in the background.
1921 * Joel Sherrill has contributed support for several standalone boards that
1922 run without an operating system.
1924 * `printf', `scanf' and friends now accept a `q' type modifier for long
1925 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1927 * All of the code taken from BSD (notably most of the math and networking
1928 routines) has been updated from the BSD 4.4-Lite release.
1930 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1932 * The new functions `getdomainname' and `setdomainname' fetch or change the
1933 YP/NIS domain name. These are system calls which exist on systems which
1936 * The time zone data files have been updated for the latest international
1939 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1940 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1944 * The C library now includes support for Sun RPC, from Sun's free
1945 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1946 are included. (There is still no support for YP.)
1948 * Tom Quinn has contributed a port of the C library to SGI machines running
1949 Irix 4 (mips-sgi-irix4).
1951 * The new `lockf' function is a simplified interface to the locking
1952 facilities of `fcntl', included for compatibility.
1954 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1956 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1958 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1961 * The error message printed by `assert' for a failed assertion now includes
1962 the name of the program (if using GNU ld) and the name of the calling
1963 function (with versions of GCC that support this).
1965 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1967 * The library now includes the <sys/mman.h> header file and memory
1968 management functions `mmap', `munmap', `mprotect', `msync', and
1969 `madvise', on systems that support those facilities.
1971 * The interface for `mcheck' has changed slightly: the function called to
1972 abort the program when an allocation inconsistency is detected now takes
1973 an argument that indicates the type of failure. The new function
1974 `mprobe' lets you request a consistency check for a particular block at
1975 any time (checks are normally done only when you call `free' or `realloc'
1978 * It is now possible to easily cross-compile the C library, building on one
1979 system a library to run on another machine and/or operating system. All
1980 you need to do is set the variable `HOST_CC' in `configparms' to the
1981 native compiler for programs to run on the machine you are building on (a
1982 few generator programs are used on Unix systems); set `CC' to the
1985 * The new function `fexecve' (only implemented on the GNU system) executes
1986 a program file given a file descriptor already open on the file.
1990 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1991 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1993 * You can set the variable `libprefix' in `configparms' to specify a prefix
1994 to be prepended to installed library files; this makes it easy to install
1995 the GNU C library to be linked as `-lgnuc' or whatever.
1997 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1998 copies a limited number of characters from a string, and returns the
1999 address of the last character written.
2001 * You no longer need to check for whether the installed `stddef.h' is
2002 compatible with the GNU C library. configure now checks for you.
2004 * You can now define a per-stream `fileno' function to convert the
2005 stream's cookie into an integral file descriptor.
2007 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2008 allocates zero bytes of storage, and returns a unique pointer which
2009 you can pass to `realloc' or `free'. The behavior is undefined if
2010 you dereference this pointer.
2012 * The C library now runs on Sony NEWS m68k machines running either
2013 NewsOS 3 or NewsOS 4.
2015 * The new `syscall' function is a system-dependent primitive function
2016 for invoking system calls. It has the canonical behavior on Unix
2017 systems, including unreliable return values for some calls (such as
2018 `pipe', `fork' and `getppid').
2020 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2021 to `EAGAIN', which is the preferred name. On systems whose kernels
2022 use two distinct codes, the C library now translates EWOULDBLOCK to
2023 EAGAIN in every system call function.
2027 * The GNU C Library Reference Manual is now distributed with the library.
2028 `make dvi' will produce a DVI file of the printed manual.
2029 `make info' will produce Info files that you can read on line using C-h i
2030 in Emacs or the `info' program.
2031 Please send comments on the manual to bug-glibc-manual@gnu.org.
2033 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2035 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2037 * Jason Merrill has contributed a port to the Sequent Symmetry running
2038 Dynix version 3 (i386-sequent-dynix).
2040 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2041 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2043 * New function `memory_warnings' lets you arrange to get warnings when
2044 malloc is running out of memory to allocate, like Emacs gives you.
2046 * The C library now contains the relocating allocator used in Emacs 19 for
2047 its editing buffers. This allocator (ralloc) minimizes allocation
2048 overhead and fragmentation by moving allocated regions around whenever it
2049 needs to. You always refer to a ralloc'd region with a "handle" (a
2050 pointer to a pointer--an object of type `void **').
2052 * There is a new `printf' format: `%m' gives you the string corresponding
2053 to the error code in `errno'.
2055 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2056 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2057 pass, the `a' modifier says to fill in a `char **' you pass with a
2060 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2061 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2062 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2064 * `mkstemp' is a traditional Unix function to atomically create and open a
2065 uniquely-named temporary file.
2069 * The standard location for the file that says what the local timezone is
2070 has changed again. It is now `/usr/local/etc/localtime' (or more
2071 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2073 * The distribution no longer contains any files with names longer than 14
2076 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2077 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2079 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2083 * The configuration process has changed quite a bit. The `configure'
2084 script is now used just like the configuration scripts for other GNU
2085 packages. The `sysdeps' directory hierarchy is much rearranged.
2086 The file `INSTALL' explains the new scheme in detail.
2088 * The header files no longer need to be processed into ANSI C and
2089 traditional C versions. There is just one set of files to install, and
2090 it will work with ANSI or old C compilers (including `gcc -traditional').
2092 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2093 MIPS DECStation running Ultrix 4.
2095 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2096 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2097 made itself into a shared library.
2099 * Yet further improved support for the i386, running 4.3 BSD-like systems
2100 (such as Mach 3 with the Unix single-server), or System V.
2102 * New function `strncasecmp' to do case-insensitive string comparison
2103 with limited length.
2105 * New function `strsep' is a reentrant alternative to `strtok'.
2107 * New functions `scandir' and `alphasort' for searching directories.
2109 * New function `setenv' is a better interface to `putenv'.
2111 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2112 function for traversing a directory tree.
2114 * The GNU obstack package is now also part of the C library.
2115 The new function `open_obstack_stream' creates a stdio stream that
2116 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2117 formatted output directly to an obstack.
2119 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2120 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2122 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2124 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2125 things to your strings.
2127 * There are some new test programs: test-fseek, testmb, and testrand.
2129 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2130 These ports are not finished, but are a good starting place for really
2131 supporting those systems.
2133 * `/etc/localtime' is now the standard location for the file that says what
2134 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2135 This follows the general principle that `/etc' is the place for all local
2136 configuration files.
2138 * The C library header files now use `extern "C"' when used by the C++
2139 compiler, so the C library should now work with C++ code.
2141 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2142 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2145 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2146 function which uses the `merge sort' algorithm, and is said to be
2147 significantly faster than the old GNU `qsort' function. Merge sort is
2148 now the standard `qsort' function. The new algorithm can require a lot
2149 of temporary storage; so, the old sorting function is called when the
2150 required storage is not available.
2152 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2153 provides the Unix `crypt' function, plus some other entry points.
2155 * The code and header files taken from 4.4 BSD have been updated with the
2156 latest files released from Berkeley.
2158 ----------------------------------------------------------------------
2159 Copyright information:
2161 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2163 Permission is granted to anyone to make or distribute verbatim copies
2164 of this document as received, in any medium, provided that the
2165 copyright notice and this permission notice are preserved,
2166 thus giving the recipient permission to redistribute in turn.
2168 Permission is granted to distribute modified versions
2169 of this document, or of portions of it,
2170 under the above conditions, provided also that they
2171 carry prominent notices stating who last changed them.
2174 version-control: never
projects / thirdparty / glibc.git / blob