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, 11741, 12140,
14 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696, 13698, 13717,
15 13741, 13763, 13939, 13950, 13952, 13966, 14042, 14047, 14090, 14150,
16 14151, 14152, 14154, 14157, 14166, 14173, 14195, 14237, 14251, 14252,
17 14283, 14298, 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349,
18 14368, 14376, 14417, 14459, 14476, 14477, 14501, 14505, 14510, 14516,
19 14518, 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562,
20 14568, 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638,
21 14645, 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716,
22 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14805,
23 14807, 14809, 14811, 14815, 14821, 14824, 14828, 14831, 14838.
25 * Port to ARM AArch64 contributed by Linaro.
27 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
28 Optimized versions of memcpy, memset, and memcmp added for System z10 and
30 Implemented by Andreas Krebbel.
32 * The new function secure_getenv allows secure access to the environment,
33 returning NULL if running in a SUID/SGID process. This function replaces
34 the internal function __secure_getenv.
36 * SystemTap static probes have been added into the dynamic linker.
37 Implemented by Gary Benson.
39 * Optimizations of string functions strstr, strcasestr and memmem.
40 Implemented by Maxim Kuvyrkov.
42 * The minimum Linux kernel version that this version of the GNU C Library
43 can be used with is 2.6.16.
45 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
46 powerpc POWER7. Implemented by Will Schmidt.
48 * New configure option --disable-nscd builds the C library such that it
49 never attempts to contact the Name Service Caching Daemon (nscd).
50 New configure option --disable-build-nscd avoids building nscd itself;
51 this is the default if --disable-nscd is used.
53 * The ttyname and ttyname_r functions on Linux now fall back to searching for
54 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
55 allows creation of chroots without the procfs mounted on /proc.
57 * The `crypt' function now fails if passed salt bytes that violate the
58 specification for those values. On Linux, the `crypt' function will
59 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
60 enabled, and fail on encrypted strings using the MD5 or DES algorithm
61 when the mode is enabled.
63 * The `clock_*' suite of functions (declared in <time.h>) is now available
64 directly in the main C library. Previously it was necessary to link with
65 -lrt to use these functions. This change has the effect that a
66 single-threaded program that uses a function such as `clock_gettime' (and
67 is not linked with -lrt) will no longer implicitly load the pthreads
68 library at runtime and so will not suffer the overheads associated with
69 multi-thread support in other code such as the C++ runtime library.
73 * The following bugs are resolved with this release:
75 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
76 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
77 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
78 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
79 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
80 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
81 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
82 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
83 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
84 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
85 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
86 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
87 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
88 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
89 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
90 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
91 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
92 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
93 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
94 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
95 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
96 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
99 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
100 configuring glibc with:
101 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
102 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
103 Implemented by H.J. Lu.
107 + define static_assert
109 + do not declare gets
111 + declare at_quick_exit and quick_exit also for ISO C11
113 + aligned_alloc. NB: The code is deliberately allows the size parameter
114 to not be a multiple of the alignment. This is a moronic requirement
115 in the standard but it is only a requirement on the caller, not the
120 + uchar.h support added
122 + CMPLX, CMPLXF, CMPLXL added
124 Implemented by Ulrich Drepper.
126 * Support for the IA-64 has been moved to ports.
128 * Remove support for anything but ELF binary format
130 * Checking versions of poll, ppoll added.
131 Implemented by Ulrich Drepper.
133 * More generic and 64-bit performance optimizations to math functions.
134 Implemented by Ulrich Drepper.
136 * New configure option --enable-obsolete-rpc makes the deprecated RPC
137 headers and functions available at compile time as they were before
138 version 2.14. This option will be removed at some time in the future
139 after the TI-RPC library becomes fully sufficient for the needs of
140 existing applications.
142 * Compatibility code for Linux kernel versions before 2.4 has been removed.
143 Note that glibc is not expected to work with any Linux kernel version
146 * New header <sys/auxv.h> and function getauxval allowing easy access to
147 the AT_* key-value pairs passed from the Linux kernel. The header also
148 defines the HWCAP_* bits associated with the AT_HWCAP key.
150 * New locales: mag_IN
152 * New configure option --enable-systemtap builds SystemTap static probes
153 into libc for setjmp and longjmp and into libpthread for various operations.
154 So far the setjmp/longjmp probes and some of the libpthread probes are
155 provided only for i*86 and x86_64.
156 Implemented by Roland McGrath and Rayson Ho.
158 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
160 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
163 * More optimized functions for SPARC. Implemented by David S. Miller.
165 * Improved support for cross-compilation, especially bootstrap builds
166 without a previously built glibc.
168 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
169 Chris Metcalf from Tilera.
171 * Support for the old ARM ABI has been removed from ports. Only the EABI is
172 now supported for ARM processors.
174 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
175 as the name of the dynamic linker, to distinguish it from the
176 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
178 * Support for CRIS has been removed from ports.
180 * A new class of installed header has been documented for low-level
181 platform-specific functionality. PowerPC added the first instance with a
182 function to provide time base register access. Contributed by Tulio
183 Magno Quites Machado Filho.
185 * ix86 configurations now install header files that are consistent with
186 what x86-64 configurations install. These same header files can be used
187 for -m32, -m64, or -mx32 builds.
188 Contributed by H.J. Lu.
190 * Math library bug fixes. A thorough audit of all open math library bugs was
191 conducted by Joseph Myers. Significant progress was made on many math
192 library bugs resulting in more accurate exceptions and function results.
193 Many thanks to all those that contributed including Andreas Jaeger for his
194 patch review and work on the x87 trigonometric instruction issues.
196 * Timezone data is no longer installed. Timezone-related binaries and scripts
197 will continue to be installed. Users should obtain their timezone data from
198 their distribution provider or from the tzdata package at
199 <ftp://munnari.oz.au/pub/>.
203 * The following bugs are resolved with this release:
205 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
206 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
207 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
208 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
209 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
210 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
211 13484, 13506, 13515, 13523, 13524, 13538, 13540
213 * New program pldd to list loaded object of a process
214 Implemented by Ulrich Drepper.
216 * Add nss_db support back to glibc. No more dependency on Berkeley db
217 and support for initgroups lookups.
218 Implemented by Ulrich Drepper.
220 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
221 Contributed by HJ Lu.
223 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
224 Contributed by HJ Lu.
226 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
227 on x86-32 and x86-64.
228 Contributed by Liubov Dmitrieva.
230 * Optimized strchr and strrchr for SSE on x86-32.
231 Contributed by Liubov Dmitrieva.
233 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
234 for x86-64 and x86-32.
235 Contributed by Liubov Dmitrieva.
237 * New interfaces: scandirat, scandirat64
238 Implemented by Ulrich Drepper.
240 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
241 Implemented by Ulrich Drepper.
243 * nscd now also caches the netgroup database.
244 Implemented by Ulrich Drepper.
246 * Integrate libm with gcc's -ffinite-math-only option.
247 Implemented by Ulrich Drepper.
249 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
250 to math functions. Implemented by Ulrich Drepper.
252 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
253 Implemented by Ulrich Drepper.
255 * New Linux interfaces: process_vm_readv, process_vm_writev
257 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
258 Implemented by Ulrich Drepper.
260 * Optimized nearbyint and strcasecmp for PPC.
261 Implemented by Adhemerval Zanella.
263 * New locales: bho_IN, unm_US, es_CU, ta_LK
267 * The following bugs are resolved with this release:
269 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
270 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
271 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
272 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
273 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
274 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
275 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
276 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
277 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
278 12795, 12811, 12813, 12814, 12841
280 * The RPC implementation in libc is obsoleted. Old programs keep working
281 but new programs cannot be linked with the routines in libc anymore.
282 Programs in need of RPC functionality must be linked against TI-RPC.
283 The TI-RPC implementation is IPv6 enabled and there are other benefits.
285 Visible changes of this change include (obviously) the inability to link
286 programs using RPC functions without referencing the TI-RPC library and the
287 removal of the RPC headers from the glibc headers.
288 Implemented by Ulrich Drepper.
290 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
291 syncfs, setns, sendmmsg
293 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
294 yue_HK, lij_IT, mhr_RU
296 * New encodings: CP770, CP771, CP772, CP773, CP774
298 * New program sotruss to trace calls through PLTs
299 Implemented by Ulrich Drepper.
301 * The malloc hook implementation is marked deprecated and will be removed
302 from the default implementation in the next version. The design never
303 worked ever since the introduction of threads. Even programs which do
304 not create threads themselves can use multiple threads created internally.
308 * The following bugs are resolved with this release:
310 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
311 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
312 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
313 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
316 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
318 * POWER7 optimizations: memset, memcmp, strncmp
320 * New optimized string functions for x86-64: strnlen (SSE2),
321 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
322 Implemented by Ulrich Drepper.
326 * The following bugs are resolved with this release:
328 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
329 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
330 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
331 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
332 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
333 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
334 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
335 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
337 * New interfaces: pthread_getname_np, pthread_setname_np
339 * New Linux interface: recvmmsg
341 * STT_GNU_IFUNC implemented for Sparc by David Miller.
343 * The dynamic linker now recognizes supported ABI versions from the
344 EI_ABIVERSION field in the ELF header.
345 Implemented by Ulrich Drepper.
347 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
348 will not be used to fill in password fields in the passwd.byname replies.
349 Instead it is used to synthesize the shadow.byname table, should it be
350 missing. This is a useful mode in some installations involving Solaris.
351 Implemented by Ulrich Drepper.
353 * New locales: kok_IN, sq_MK, cv_RU
357 * The following bugs are resolved with this release:
359 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
360 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
361 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
362 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
363 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
364 10789, 10817, 10823, 10840, 10847
366 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
368 Implemented by Ulrich Drepper.
370 * Checking version of longjmp added that fails if an uninitialized stack
371 frame would be created. Implemented by Ulrich Drepper.
373 * STT_GNU_IFUNC is now supported in static executables.
374 Implemented by H.J. Lu.
376 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
378 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
379 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
380 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
381 Contributed by H.J. Lu.
383 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
384 Implemented by Ulrich Drepper.
386 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
388 Contributed by H.J. Lu.
390 * Support for fma instruction in AVX on x86-64.
391 Implemented by H.J. Lu and Ulrich Drepper.
393 * AVX support in x86-64 auditing support in ld.so.
394 Implemented by H.J. Lu.
396 * STB_GNU_UNIQUE support added.
397 Implemented by Ulrich Drepper.
399 * Implement second fallback mode for optimized DNS lookup for even more
400 broken environments. If two requests from the same port are not
401 handled correctly close the socket and open a new one before sending
402 the second request. The 'single-request-reopen' option in /etc/resolv.conf
403 can be used to select this mode right away, instead of rediscovering the
404 necessity is every process again.
405 Implemented by Ulrich Drepper.
407 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
408 Implemented by Adam Tkac.
410 * Optimized iconv conversions for S390x.
411 Implemented by Andreas Krebbel.
413 * Using condvars with PI mutexes is now more efficient due to kernel
414 support for requeueing to PI futexes. NPTL support added for x86-64.
415 Implemented by Ulrich Drepper.
417 * New locales: ps_AF, my_MM
421 * The following bugs are resolved with this release:
423 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
424 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
425 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
426 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
427 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
429 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
430 Implemented by Ulrich Drepper.
432 * New Linux interfaces: accept4, fallocate, fallocate64.
433 Implemented by Ulrich Drepper.
435 * Correct declarations of string function when used in C++ code. This
436 could lead to compile errors for invalid C++ code.
438 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
441 * New POSIX 2008 interface: psiginfo
442 Implemented by Ulrich Drepper.
444 * New ISO C++1x interfaces: quick_exit, at_quick_exit
445 Implemented by Ulrich Drepper.
447 * Support for selecting between multiple function definitions at runtime
448 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
450 * The libcrypt library can now use the hash function implementations in
451 NSS. Implemented by Ulrich Drepper.
453 * The malloc implementation can be compiled to be less memory efficient
454 but higher performing in multi-threaded programs.
455 Implemented by Ulrich Drepper.
457 * New locales: nan_TW@latin, ks_IN
459 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
460 Implemented by Ulrich Drepper.
462 * Extended printf hook support. It is possible to use user-defined types
463 and extend existing format specifiers.
464 Implemented by Ulrich Drepper.
466 * Handling for group shadow files has been added.
467 Implemented by Ulrich Drepper.
469 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
470 servers (the case, e.g., for some people using the built-in DNS
471 server in ADSL modems/routers). There is a once-per-process timeout
472 in case of a broken server. To avoid it, users can run nscd or put
473 'options single-request' in /etc/resolv.conf.
474 Implemented by Ulrich Drepper.
478 * The following bugs are resolved with this release:
480 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
481 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
482 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
483 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
484 6968, 6974, 6980, 6995, 7008, 7009, 7029
486 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
487 up at the same time. Implemented by Ulrich Drepper.
489 * TLS descriptors for LD and GD on x86 and x86-64.
490 Implemented by Alexandre Oliva.
492 * getaddrinfo now handles DCCP and UDPlite.
493 Implemented by Ulrich Drepper.
495 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
496 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
497 Implemented by Ulrich Drepper.
499 * New implementation of memmem, strstr, and strcasestr which is O(n).
500 Implemented by Eric Blake.
502 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
504 * Implement "e" option for popen to open file descriptor with the
505 close-on-exec flag set. Implemented by Ulrich Drepper.
507 * Implement "b" mode for fmemopen. In this mode writes writes don't
508 implicitly add a NUL byte and seeks from the end of the buffer really
509 use the buffer end, not the string length as the basis.
510 Implemented by Ulrich Drepper.
512 * Many functions, exported and internal, now atomically set the close-on-exec
513 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
515 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
517 Implemented by Pravin Satpute.
519 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
523 * The following bugs are resolved with this release:
525 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
526 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
527 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
528 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
529 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
530 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
531 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
533 * New locales: bo_CN, bo_IN, shs_CA.
535 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
537 * Sorting rules for some Indian languages (Devanagari and Gujarati).
538 Implemented by Pravin Satpute.
540 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
542 * nscd caches now all timeouts for DNS entries
543 Implemented by Ulrich Drepper.
545 * nscd is more efficient and wakes up less often.
546 Implemented by Ulrich Drepper.
548 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
549 vdprintf, and obstack_vprintf.
550 Implemented by Jakub Jelinek.
552 * Faster memset for x86-64.
553 Implemented by Harsha Jagasia and H.J. Lu.
555 * Faster memcpy on x86.
556 Implemented by Ulrich Drepper.
558 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
559 Implemented by Ulrich Drepper.
561 * Faster sqrt and sqrtf implemention for some PPC variants.
562 Implemented by Steven Munroe.
566 * The following bugs are resolved with this release:
568 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
569 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
570 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
571 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
572 5071, 5103, 5104, 5112, 5113, 5184, 5186
574 * More checking functions: fread, fread_unlocked, open*, mq_open.
575 Implemented by Jakub Jelinek and Ulrich Drepper.
577 * Extend fortification to C++. Implemented by Jakub Jelinek.
579 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
580 by not recognizing 'a' as a modifier when those specs are requested.
581 Implemented by Jakub Jelinek.
583 * PPC optimizations to math and string functions.
584 Implemented by Steven Munroe.
586 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
587 options to be passed. Implemented by Ulrich Drepper.
589 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
591 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
592 Implemented by Ulrich Drepper.
594 * Handle private futexes in the NPTL implementation.
595 Implemented by Jakub Jelinek and Ulrich Drepper.
597 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
598 Implemented by Roland McGrath and Ulrich Drepper.
600 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
602 * SHA-256 and SHA-512 based password encryption.
603 Implemented by Ulrich Drepper.
605 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
606 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
609 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
610 Implemented by Ulrich Drepper.
614 * The following bugs are resolved with this release:
616 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
617 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
618 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
619 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
620 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
621 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
622 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
625 * New Linux interfaces: epoll_pwait, sched_getcpu.
627 * New generic interfaces: strerror_l.
629 * nscd can now cache the services database. Implemented by Ulrich Drepper.
633 * The following bugs are resolved with this release:
635 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
636 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
637 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
638 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
639 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
640 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
641 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
642 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
643 3225, 3251, 3252, 3253, 3273
645 * For Linux, the sorting of addresses returned by getaddrinfo now also
646 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
647 Implemented by Ulrich Drepper.
649 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
650 Implemented by Ulrich Drepper.
652 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
654 * New iconv module for MIK. Contributed by Alexander Shopov.
656 * For sites with broken group and/or passwd database, the auto-propagate
657 option of nscd can prevent creating ID lookup entries from the results
658 of a name lookup and vice versa. This usually is no problem but some
659 site might have problems with the default behavior.
660 Implemented by Ulrich Drepper.
662 * Iterating over entire database in NIS can be slow. With the
663 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
664 to trade time for memory. The entire database will be read at once.
665 Implemented by Ulrich Drepper.
667 * The interfaces introduced in RFC 3542 have been implemented by
670 * Support for the new ELF hash table format was added by Ulrich Drepper.
672 * Support for priority inheritance mutexes added by Jakub Jelinek and
675 * Support for priority protected mutexes added by Jakub Jelinek.
677 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
678 or_IN, csb_PL, fy_NL, sr_ME.
682 * More overflow detection functions.
684 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
685 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
687 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
688 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
689 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
690 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
691 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
692 by Masahide Washizawa.
694 * It is now possible to install audit libraries for the dynamic linker using
695 LD_AUDIT. Implemented by Ulrich Drepper.
697 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
698 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
699 For a libc and libpthread that works well on Linux 2.4 kernels, we
700 recommend using the stable 2.3 branch.
702 * The new function open_wmemstream acts like open_memstream,
703 but uses a wchar_t wide character buffer.
705 * The new function ppoll is an improved version of poll, similar to pselect.
707 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
708 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
709 renameat, unlinkat, linkat, symlinkat, readlinkat.
711 * New Linux kernel system calls: unshare,
712 inotify_init, inotify_add_watch, inotify_rm_watch.
714 * The euidaccess function is now also known by the alias eaccess,
715 for compatibility with some other systems.
717 * Timezone data updated to 2006b version.
721 * The following bugs are resolved with this release:
723 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
724 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
725 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
726 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
727 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
728 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
730 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
732 * As of this release, GCC 4 can be used to compile the C Library.
734 * Timezone data updated to 2005m version.
738 * The following bugs are resolved with this release:
740 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
741 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
742 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
743 777, 787, 821, 822, 823, 825
745 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
749 * Support for RFC 3678. Real implementations exist only for Linux so far.
750 Implemented by Ulrich Drepper.
752 * nscd can now cache entries persistently. Expiring entries are reloaded.
753 For speedups the cache can be shared in memory with client processes.
754 Implemented by Ulrich Drepper.
756 * nscd can now perform SELinux checks.
757 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
759 * getaddrinfo queries are now cached. Canonical name lookup is performed
761 Implemented by Ulrich Drepper.
763 * The nothrow function attribute is used when headers are used by gcc when
764 compiling C code. This can avoid significant amounts of exception
767 * The malloc functions perform more error checking and are stricter when
768 it comes to reacting on errors. The default action is to terminate
769 the process after showing an error message. Implemented by Ulrich Drepper.
771 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
772 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
774 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
775 namespaces using the new function dlmopen(). This feature is of course,
776 like most other dynamic loading functionality, not available in statically
777 linked applications. Implemented by Ulrich Drepper.
779 * Low-overhead boundary checking variants of string and some stdio functions
780 were added. These are to be used in conjunction with a gcc patch by
781 Jakub Jelinek which adds calls to these functions if possible.
782 Implemented by Jakub Jelinek and Ulrich Drepper.
784 * Old code for several operating systems and machine architectures that
785 have not been in working condition in a long time have been removed from
786 the main source tree maintained by the GNU C Library's maintainers.
787 These files are now reside in the separate `ports' source module
788 that is usable as an add-on when building the library.
792 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
793 interrogate the dynamic linker, compatible with the Solaris interface.
795 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
796 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
798 * getifaddrs now uses the netlink interface on Linux to get its information.
799 Implemented by Thorsten Kukuk.
801 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
802 Implemented by Ulrich Drepper.
804 * support for non-executable stacks on x86 has been added. Changes mostly
807 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
810 * getaddrinfo now performs destination address selection according to
815 * Thread-safe interfaces for many functions that access locale data
816 were added in version 2.3, but these features were omitted from NEWS.
817 Many functions have variants with an `_l' suffix that take a `locale_t'
818 object as a parameter rather than consulting the current locale.
819 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
820 create and maintain `locale_t' objects. Additionally, the new function
821 `uselocale' sets "the current locale" (as used by functions not so
822 parameterized) set for an individual thread. These features were added
823 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
825 * The functions getresuid, getresgid, setresuid, and setresgid, which
826 have long been available on Linux, are now declared in <unistd.h>
827 and are now also available on the Hurd.
829 * ELF thread-local storage support (TLS) now works on x86-64.
831 * The new dynamic string token $LIB is expanded in shared library names.
832 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
834 * Aldy Hernandez contributed complete software floating point support for
835 PowerPC machines with no FPU.
837 * fexecve is implemented on Linux.
839 * The `btowc' function should work at least twice as fast due to
840 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
842 * With approriate thread add-ons cancelable functions are now implemented
843 in libc.so as well. No need to call the function in libpthread. This
844 change allowed to finally disable the incorrect and expensive handling
845 of weak definition in ld.so.
847 * Yet more PLT entries in libc.so have been removed. We finally arrived
848 at the bare minimum. Startup times improved appropriately.
850 * Support for the new Linux/x86 system call interface was added. The
851 AT_SYSINFO auxiliary vector entry is recognized and handled.
855 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
858 * iconv (the program and the interface) now accepts empty names (excluding
859 options like //TRANSLIT) to mean "use charset of current locale".
861 * localedef can now transliterate characters in strings which are not in
862 the provided charmap. The information from the input locale is used.
864 * Prelinking support was added for ELF targets. This requires additional
865 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
867 * Read-only stdio streams now use mmap to speed up operation by eliminating
868 copying and buffer underflows. To use add 'm' to the mode string of
869 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
871 * The malloc functions were completely rewritten by Wolfram Gloger based
872 on Doug Lea's malloc-2.7.0.c.
874 * Isamu Hasegawa contributed a completely new and POSIX-conformant
875 implementation of regex.
877 * Bruno Haible upgraded the iconv and locale implementation to support
880 * Contents of the LC_* and LANG environment variables in the CEN style are
881 not recognized anymore. It never was used. Change by Ulrich Drepper.
883 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
884 thread-local storage (TLS) ABI on some platforms.
885 Changes by Ulrich Drepper. SH support by Kaz Kojima.
887 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
888 EUC-JISX0213, and TSCII.
890 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
891 BSD-compatible interface for getting all network interface addresses.
892 Implementation for IPv4 by Roland McGrath.
894 * Loading of locale data is faster due to the introduction of a locale
895 archive. Implemented by Roland McGrath and Ulrich Drepper.
897 * Startup times are significantly reduced by not using exported functions
898 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
901 * Steven Munroe contributed a port to PowerPC64/Linux.
905 * The Hurd now uses the GNU libio implementation of stdio rather than the
906 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
908 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
909 with the same behavior as the Linux system call of the same name.
913 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
914 128-bit long double format.
916 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
917 IBM1161, and IBM1162 charsets.
919 * Andreas Jaeger contributed a port to x86-64/Linux.
921 * Peter Bruin contributed a port to PowerPC/Hurd.
923 * libc functions using I/O streams now can handle wide-oriented streams
926 * optimizations in the dynamic linker. Binaries created by recent binutils
927 versions start up quicker due to reduced time spent on relocations.
929 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
933 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
934 asinh, atanh, j0 for the 128-bit long double format.
936 * Bruno Haible updated all the code handling Unicode in some form to
939 * Speed of regex for single-byte locales is back to previous levels.
940 Patch by Isamu Hasegawa.
942 * Alpha, SPARC, and IA-64 now also using floating stacks.
944 * Startup time of internationalized applications greatly improved through
945 iconv cache. Use iconvconfig to generate the cache file.
946 Contributed by Ulrich Drepper.
948 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
949 severe performance problems. Patch by David Mosberger.
951 * The Hurd port got a lot more functionality like AIO, various stdio
952 extensions, etc. Mainly done by Roland McGrath.
954 * mtrace can now lookup symbols in shared libraries.
958 * Intel's IA-64 math library is largely integrated. It provides fast and
959 accurate implementatations for most basic and standard math functions
960 in float, double, and long double format.
962 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
963 and asin for the 96-bit long double format and asin, log, tan for the
964 128-bit long double format.
966 * The beginning of a last-bit accurate math library by IBM Haifa were added.
967 The basic double functions exist today. Contributed by Abraham Ziv
968 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
969 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
971 * An asynchronous name lookup library was added. The interface is designed
972 after POSIX AIO. The proposal was circulated beforehand to get comments.
973 No negative ones came in. Implemented by Ulrich Drepper.
975 * Port to S390/64bit contributed by Martin Schwidefsky
976 <schwidefsky@de.ibm.com>.
978 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
979 of functions for Linux/IA-64.
981 * The RPC code is now thread safe. Threads can now use the same service
982 of different services at the same time. Patch by Eric Norum
983 <eric.norum@usask.ca> with some help by Ulrich Drepper.
985 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
986 family of functions for Linux/S390.
988 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
989 of functions for Linux/x86.
991 * Port to Linux/CRIS contributed by Axis Communications.
995 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
996 we can now check for namespace violations and missing declarations. The
997 result is that almost all headers are now Unix-compliant (as defined in
998 the upcoming XPG6). The negative side is that some programs might need
999 corrections, too, if they depend on the incorrect form of the headers in
1000 previous versions which defined too many symbols and included too many
1003 * regex now handles multibyte character sets correctly.
1004 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1006 * iconv (the program) does now conform to the upcoming XPG6 and handles
1007 charmaps. Instead of the charset names the path of charmaps can be
1008 provided and the conversion happens based on this data.
1009 Contributed by Ulrich Drepper.
1011 * The locale program now provides detailed information about the installed
1016 only lists the names of the supported locales
1020 provides details such as country, language, and codeset name.
1021 Contributed by Ulrich Drepper.
1025 * The gencat program now parses the input file according to the charset
1026 selected by the LC_CTYPE category. This is important for stateful
1027 character sets. To make generating catalogs easier there is a way
1028 to overwrite the charset selected by the locale: before the first
1029 message or $ quote line the catalog can contain a line like
1031 $ codeset=ISO-8859-2
1033 to select the charset (ISO-8859-2 in this case).
1035 Implemented by Shinya Hanataka and Ulrich Drepper.
1037 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1038 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1039 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1041 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1042 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1044 * The LANGUAGE environment variable is now ignored unless the locale is
1045 changed from the default "C" locale.
1047 * The usual bug fixes.
1051 * Greg McGary added runtime support for bounds checking using gcc's
1052 new -fbounded-pointers option. ix86 target is complete. PowerPC
1055 * Thorsten Kukuk added secure mode support to nscd.
1057 * The Berkeley db libraries have been removed.
1059 Related, the nss_db module is now in a separate package since it
1060 obviously requires a database library being available.
1062 * Wide character I/O streams implemented by Ulrich Drepper.
1064 * Functions from the extended socket API added by Ulrich Drepper.
1066 * Functions feenableexcept and fedisableexcept to control the
1067 behaviour of individual exceptions have been added by Andreas Jaeger.
1069 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1071 * The resolver code has been updated from bind 8.2.3-T5B which supports
1072 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1075 This change could in some situations effect backward compatibility. Since
1076 now `_res' is a thread-local instead of a global variable, modifying it
1077 in one thread does not have any effect in other threads.
1079 The resolver library was also extended to allow IPv6 as the transport
1080 protocol for the requests. This work was done by Stig Venaas.
1082 * Compatibility code for K&R C compilers has been removed from the
1083 header files. A ISO C compiler is needed to use the library
1084 (conforming to either C89 or C99 standard).
1086 * Complete rewrite of the localedef program to support multibyte character
1087 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1088 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1089 Implemented by Ulrich Drepper.
1091 Bruno Haible significantly improved the generation and use of the data
1092 structures for the wide character tables.
1094 * Plural handling in gettext implemented by Ulrich Drepper.
1096 * The utmp daemon has been removed.
1098 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1100 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1103 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1105 * POSIX barriers implemented by Kaz Kylheku.
1107 * POSIX spawn function family implemented by Ulrich Drepper.
1109 * POSIX spinlocks are now available.
1111 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1113 * the configure option --enable-kernel=X.Y.Z allows to strip out
1114 compatibility for kernel versions before X.Y.Z. This is currently only
1115 implemented for Linux.
1117 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1118 field sin6_scope_id. This means that all programs using IPv6 should be
1119 recompiled. Don't expect binary compatibility with previous glibc
1122 * various conversion modules for IBM character sets contributed by
1125 * IA-64 port by Jes Sorensen and HJ Lu.
1139 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1141 * New xdr functions are added; some rpc functions are now 64bit clean.
1143 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1145 * Fixed known incompatibilities with glibc 2.0.
1147 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1149 * Optimized a number of functions (especially the ELF dynamic loader).
1151 * Update timezone data files.
1153 * lots of charmaps corrections
1155 * some new locale definitions and charmaps
1160 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1161 conform to POSIX member type requirements. Symbol versions have been
1162 adjusted as needed within the library, and for direct use by applications,
1163 but there is potential for problems if third-party libraries use
1164 struct timeval as part of their interface. This does not present
1165 a problem for X and other "essential" system libraries.
1167 * An additional locale model to support C++ Standard Library locale
1168 model and probably more was implemented by Ulrich Drepper.
1170 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1173 * Miles Bader provided the `argp' function family to support hierachical
1174 command line argument parsing, layered on top of getopt.
1176 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1178 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1181 * scanf recognizes the %a and %A format for scanning floating point numbers.
1183 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1184 information and interfaces for the available integer types.
1186 * about 130 new math functions were added to implement the ISO C9x math
1189 * the new header <complex.h> contains definitions of the complex math
1190 functions from ISO C 9X.
1192 * the new header <tgmath.h> defines generic macros to use complex or
1193 real valued functions.
1195 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1197 * Andreas Jaeger provided a test suite for the math library.
1199 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1201 * Ulrich Drepper added character set conversion functions (iconv).
1203 * Optimized string functions have been added.
1205 * The localedata addon is now part of glibc.
1207 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1209 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1210 daemon for NSS (nscd).
1212 Missing a better place here are some numbers on improvements. Under
1213 Linux 2.1.125 un-tar-ing the kernel sources takes
1217 using local files 12.19s 6.88s 22.91s
1219 using NIS 13.92s 8.91s 26.34s
1221 using NIS & nscd 10.37s 7.34s 25.30s
1223 using NIS+ 27.57s 30.37s 640.46s
1225 using NIS+ & nscd 10.25s 7.83s 26.51s
1227 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1229 Keep in mind that non-namelookup related operations dominate above times.
1230 It was just a common complain that using NIS+ unpacking the kernel is
1233 [1] The old nscd implementation is not available anymore since it was
1234 distributed with glibc up to version 2.0.98 and thus is now replaced.
1236 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1238 * Mark Kettenis provided a Hesiod NSS module.
1240 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1241 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1243 * rcmd can now handle netgroups (Dick Streefland).
1245 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1248 * Support for the IPv6 protocol has been added to the socket API, as per the
1249 latest draft standards.
1251 * Support for Linux 2.2 has been added.
1253 * Interface changes relative to the latest 2.0.x release:
1254 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1255 addseverity NEW: Unix98
1256 alphasort64 NEW: LFS
1257 argp_err_exit_status NEW: argp, GNU ext
1258 argp_error NEW: argp, GNU ext
1259 argp_failure NEW: argp, GNU ext
1260 argp_help NEW: argp, GNU ext
1261 argp_parse NEW: argp, GNU ext
1262 argp_program_bug_address NEW: argp, GNU ext
1263 argp_program_version NEW: argp, GNU ext
1264 argp_program_version_hook NEW: argp, GNU ext
1265 argp_state_help NEW: argp, GNU ext
1266 argp_usage NEW: argp, GNU ext
1267 authdes_create NEW: Secure RPC
1268 authdes_getucred NEW: Secure RPC
1269 authdes_pk_create NEW: Secure RPC
1270 backtrace NEW: GNU ext.
1271 backtrace_symbols NEW: GNU ext.
1272 backtrace_symbols_fd NEW: GNU ext.
1274 cacosf NEW: ISO C 9x
1275 cacosh NEW: ISO C 9x
1276 cacoshf NEW: ISO C 9x
1277 cacoshl NEW: ISO C 9x
1278 cacosl NEW: ISO C 9x
1285 casinf NEW: ISO C 9x
1286 casinh NEW: ISO C 9x
1287 casinhf NEW: ISO C 9x
1288 casinhl NEW: ISO C 9x
1289 casinl NEW: ISO C 9x
1291 catanf NEW: ISO C 9x
1292 catanh NEW: ISO C 9x
1293 catanhf NEW: ISO C 9x
1294 catanhl NEW: ISO C 9x
1295 catanl NEW: ISO C 9x
1296 cbc_crypt NEW: Secure RPC
1300 ccoshf NEW: ISO C 9x
1301 ccoshl NEW: ISO C 9x
1307 cimagf NEW: ISO C 9x
1308 cimagl NEW: ISO C 9x
1309 clearerr_locked REMOVED
1310 clntunix_create NEW: sunrpc ext
1312 clog10 NEW: ISO C 9x
1313 clog10f NEW: ISO C 9x
1314 clog10l NEW: ISO C 9x
1324 cprojf NEW: ISO C 9x
1325 cprojl NEW: ISO C 9x
1327 crealf NEW: ISO C 9x
1328 creall NEW: ISO C 9x
1333 csinhf NEW: ISO C 9x
1334 csinhl NEW: ISO C 9x
1337 csqrtf NEW: ISO C 9x
1338 csqrtl NEW: ISO C 9x
1342 ctanhf NEW: ISO C 9x
1343 ctanhl NEW: ISO C 9x
1345 des_setparity NEW: Secure RPC
1346 ecb_crypt NEW: Secure RPC
1347 endutxent NEW: Unix98
1349 exp10f NEW: ISO C 9x
1350 exp10l NEW: ISO C 9x
1354 fattach NEW: STREAMS
1355 fdetach NEW: STREAMS
1359 feclearexcept NEW: ISO C 9x
1360 fegetenv NEW: ISO C 9x
1361 fegetexceptflag NEW: ISO C 9x
1362 fegetround NEW: ISO C 9x
1363 feholdexcept NEW: ISO C 9x
1365 feraiseexcept NEW: ISO C 9x
1366 ferror_locked REMOVED
1367 fesetenv NEW: ISO C 9x
1368 fesetexceptflag NEW: ISO C 9x
1369 fesetround NEW: ISO C 9x
1370 fetestexcept NEW: ISO C 9x
1371 feupdateenv NEW: ISO C 9x
1372 fflush_locked REMOVED
1376 fgets_unlocked NEW: GNU ext.
1377 fileno_locked REMOVED
1389 fputc_locked REMOVED
1390 fputs_unlocked NEW: GNU ext.
1391 fread_unlocked NEW: GNU ext.
1396 fstatvfs NEW: Unix98
1400 ftruncate64 NEW: LFS
1402 fwrite_unlocked NEW: GNU ext.
1403 gai_strerror NEW: IPv6
1407 getchar_locked REMOVED
1409 getdate_err NEW: Unix98
1410 getdate_r NEW: GNU ext.
1412 getnameinfo NEW: IPv6
1413 getnetname NEW: Secure RPC
1414 getpmsg NEW: STREAMS
1415 getpt NEW: Unix98 PTY
1416 getrlimit64 NEW: LFS
1417 getutxent NEW: Unix98
1418 getutxid NEW: Unix98
1419 getutxline NEW: Unix98
1420 glob64 NEW: GNU ext.
1421 globfree64 NEW: GNU ext.
1422 gnu_get_libc_release NEW: GNU ext.
1423 gnu_get_libc_version NEW: GNU ext.
1424 grantpt NEW: Unix98 PTY
1425 host2netname NEW: Secure RPC
1427 iconv_close NEW: iconv
1428 iconv_open NEW: iconv
1429 if_freenameindex NEW: IPv6
1430 if_indextoname NEW: IPv6
1431 if_nameindex NEW: IPv6
1432 if_nametoindex NEW: IPv6
1433 in6addr_any NEW: IPv6
1434 in6addr_loopback NEW: IPv6
1435 inet6_isipv4mapped NEW: IPv6
1436 isastream NEW: STREAMS
1437 iswblank NEW: GNU ext.
1438 key_decryptsession NEW: Secure RPC
1439 key_decryptsession_pk NEW: Secure RPC
1440 key_encryptsession NEW: Secure RPC
1441 key_encryptsession_pk NEW: Secure RPC
1442 key_gendes NEW: Secure RPC
1443 key_get_conv NEW: Secure RPC
1444 key_secretkey_is_set NEW: Secure RPC
1445 key_setnet NEW: Secure RPC
1446 key_setsecret NEW: Secure RPC
1447 llrint NEW: ISO C 9x
1448 llrintf NEW: ISO C 9x
1449 llrintl NEW: ISO C 9x
1450 llround NEW: ISO C 9x
1451 llroundf NEW: ISO C 9x
1452 llroundl NEW: ISO C 9x
1457 lrintf NEW: ISO C 9x
1458 lrintl NEW: ISO C 9x
1459 lround NEW: ISO C 9x
1460 lroundf NEW: ISO C 9x
1461 lroundl NEW: ISO C 9x
1463 makecontext NEW: Unix98
1464 mempcpy NEW: GNU ext.
1467 modify_ldt NEW: kernel
1471 nearbyint NEW: ISO C 9x
1472 nearbyintf NEW: ISO C 9x
1473 nearbyintl NEW: ISO C 9x
1474 netname2host NEW: Secure RPC
1475 netname2user NEW: Secure RPC
1476 nexttoward NEW: ISO C 9x
1477 nexttowardf NEW: ISO C 9x
1478 nexttowardl NEW: ISO C 9x
1482 passwd2des NEW: Secure RPC
1484 pow10f NEW: GNU ext.
1485 pow10l NEW: GNU ext.
1488 printf_size NEW: GNU ext.
1489 printf_size_info NEW: GNU ext.
1490 profil_counter REMOVED
1491 pthread_mutexattr_getkind_np REPLACED
1492 pthread_mutexattr_setkind_np REPLACED
1493 ptsname NEW: Unix98 PTY
1494 ptsname_r NEW: Unix98 PTY
1496 putchar_locked REMOVED
1497 putgrent NEW: GNU ext.
1499 putpmsg NEW: STREAMS
1500 pututxline NEW: Unix98
1504 readdir64_r NEW: LFS
1505 remquo NEW: ISO C 9x
1506 remquof NEW: ISO C 9x
1507 remquol NEW: ISO C 9x
1509 roundf NEW: ISO C 9x
1510 roundl NEW: ISO C 9x
1512 scalbln NEW: ISO C 9x
1513 scalblnf NEW: ISO C 9x
1514 scalblnl NEW: ISO C 9x
1516 sendfile NEW: kernel
1517 setcontext NEW: Unix98
1518 setrlimit64 NEW: LFS
1519 setutxent NEW: Unix98
1521 sigignore NEW: Unix98
1522 sigqueue NEW: POSIX.1b
1523 sigrelse NEW: Unix98
1524 sigset NEW: POSIX.1b
1525 sigtimedwait NEW: POSIX.1b
1526 sigwaitinfo NEW: POSIX.1b
1527 sincos NEW: GNU ext.
1528 sincosf NEW: GNU ext.
1529 sincosl NEW: GNU ext.
1533 strcasestr NEW: GNU ext.
1534 strtoimax NEW: ISO C 9x
1535 strtoumax NEW: ISO C 9x
1536 strverscmp NEW: GNU ext.
1537 svcauthdes_stats NEW: Secure RPC
1538 svcunix_create NEW: sunrpc etx
1539 svcunixfd_create NEW: sunrpc ext
1540 swapcontext NEW: Unix98
1541 tcgetsid NEW: Unix98 PTY
1542 tdestroy NEW: GNU ext.
1543 tgamma NEW: ISO C 9x
1544 tgammaf NEW: ISO C 9x
1545 tgammal NEW: ISO C 9x
1549 truncf NEW: ISO C 9x
1550 truncl NEW: ISO C 9x
1552 unlockpt NEW: Unix98 PTY
1553 updwtmpx NEW: Unix98
1554 user2netname NEW: Secure RPC
1555 utmpxname NEW: Unix98
1556 versionsort NEW: GNU ext.
1557 versionsort64 NEW: GNU ext.
1559 wcscasecmp NEW: GNU ext.
1560 wcsncasecmp NEW: GNU ext.
1561 wcsnlen NEW: GNU ext.
1562 wcstoimax NEW: ISO C 9x
1563 wcstoll NEW: ISO C 9x
1564 wcstoull NEW: ISO C 9x
1565 wcstoumax NEW: ISO C 9x
1567 wordexp NEW: POSIX.2
1568 wordfree NEW: POSIX.2
1569 write_profiling REMOVED
1570 xdecrypt NEW: Secure RPC
1571 xdr_authdes_cred NEW: Secure RPC
1572 xdr_authdes_verf NEW: Secure RPC
1573 xdr_cryptkeyarg NEW: Secure RPC
1574 xdr_cryptkeyarg2 NEW: Secure RPC
1575 xdr_cryptkeyres NEW: Secure RPC
1576 xdr_getcredres NEW: Secure RPC
1577 xdr_key_netstarg NEW: Secure RPC
1578 xdr_key_netstres NEW: Secure RPC
1579 xdr_keybuf NEW: Secure RPC
1580 xdr_keystatus NEW: Secure RPC
1581 xdr_netnamestr NEW: Secure RPC
1582 xdr_sizeof NEW: Secure RPC
1583 xdr_unixcred NEW: sunrpc ext
1584 xencrypt NEW: Secure RPC
1585 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1596 * inet_ntoa is thread-safe
1598 * updwtmp is moved from libutil to libc
1600 * rewrite of cbrt function
1602 * update of timezone data
1616 * add atoll function
1618 * fix complex problems in Berkeley DB code
1620 * fix math functions
1624 * fixed lots of header problems (especially Linux/GNU specific)
1626 * dynamic loader preserves all registers
1628 * Roland McGrath provided support for handling of auxiliary objects in
1629 the ELF dynamic loader.
1631 * support for parallel builds is improved
1635 * GNU extensions are no longer declared by default. To enable them you
1636 must define the macro `_GNU_SOURCE' in your program or compile with
1639 * The library has changed from using GNU ld symbol aliases to using weak
1640 symbols where available. The ELF object file format supports weak
1641 symbols; GNU ld also supports weak symbols in the a.out format. (There
1642 is also now support for other GNU ld extensions in ELF. Use the
1643 `--with-elf' option to configure to indicate you have ELF, and
1644 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1645 of many files which contained only symbol aliases, reducing the size of
1646 the source and the compiled library; many other files were renamed to
1647 less cryptic names previously occupied by the symbol alias files.
1648 There is a new header file <elf.h> for programs which operate on
1649 files in the ELF format.
1651 * Converted to Autoconf version 2, so `configure' has more options.
1652 Run `configure --help' to see the details.
1654 * The library can now be configured to build profiling, highly-optimized
1655 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1656 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1657 `configure' enable building these extra libraries. The shared library is
1658 built by default when using both ELF and GNU ld. When shared libraries
1659 are enabled, the new library `-ldl' is available for arbitrary run-time
1660 loading of shared objects; its interface is defined in <dlfcn.h>. The
1661 new header file <link.h> gives access to the internals of the run-time
1662 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1663 application of same name on other systems and it provides information
1664 about dynamically linked binaries.
1666 * The C library now provides the run-time support code for profiling
1667 executables compiled with `-pg'. Programs can control the profiling code
1668 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1669 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1670 the support for this file format was contributed by David Mosberger-Tang.
1672 * The math code has been replaced with a math library based on fdlibm from
1673 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1674 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1675 functions. The math functions now reside in a separate library, so
1676 programs using them will need to use `-lm' their linking commands.
1678 * John C. Bowman contributed optimized ix87 assembler inline functions.
1680 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1681 mechanism similar to that found in Solaris 2. This is now used for the
1682 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1683 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1684 file controls what services are used for each individual database. This
1685 works by loading shared libraries with names specified in `nsswitch.conf',
1686 so service modules can be changed or added at any time without even
1687 relinking any program. Currently there are the file, db, and NIS based
1688 NSS services available.
1690 * The new functions `strtoq' and `strtouq' parse integer values from
1691 strings, like `strtol' and `strtoul', but they return `long long int' and
1692 `unsigned long long int' values, respectively (64-bit quantities).
1694 * The new functions `strtof' and `strtold' parse floating-point values from
1695 strings, like `strtod', but they return `float' and `long double' values,
1696 respectively (on some machines `double' and `long double' are the same).
1698 * Ulrich Drepper has contributed new implementations of the floating-point
1699 printing and reading code used in the `printf' family of functions and
1700 `strtod', `strtof', and `strtold'. These new functions are perfectly
1701 accurate, and much faster than the old ones.
1703 * The implementation of the POSIX locale model was completely rewritten by
1704 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1705 to compile the POSIX locale definition.
1707 * The former dummy implementations of the strcoll and strxfrm function are
1708 now replaced by fully functional code contributed by Ulrich Drepper. The
1709 collation information comes from the POSIX locale definitions.
1711 * The new header <langinfo.h> defines an interface for accessing
1712 various locale-dependent data (using the locale chosen with `setlocale').
1714 * Ulrich Drepper has contributed a new suite of functions for operation on
1715 wide-character and multibyte-character strings, in <wchar.h>;
1716 and classification and case conversion of wide characters, in <wctype.h>.
1717 These new functions are conforming to the ISO C, Amendement 1 specification.
1719 * There is now a second implementation of the standard I/O library available.
1720 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1721 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1723 * You can now use positional parameter specifications in format strings
1724 for the `printf' and `scanf' families of functions. For example,
1725 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1726 ``Number 6, Mr Jones''. This is mainly useful when providing different
1727 format strings for different languages, whose grammars may dictate
1728 different orderings of the values being printed. To support this
1729 feature, the interface for `register_printf_handler' has changed; see
1730 the header file <printf.h> for details.
1732 * The `printf' and `scanf' families of functions now understand a new
1733 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1734 to group numbers as indicated by the locale; for `scanf' and friends, this
1735 says to accept as valid only a number with all the proper grouping
1736 separators in the right places. In the default "C" locale, numbers are
1737 not grouped; but locales for specific countries will define the usual
1738 conventions (i.e. separate thousands with `,' in the US locale).
1740 * The pgrp functions have been regularized, slightly incompatibly but much
1741 less confusingly. The core functions are now `getpgid' and `setpgid',
1742 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1743 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1744 provided for compatibility. There is no longer an incompatible `getpgrp'
1745 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1747 * The new header file <fts.h> and suite of functions simplify programs that
1748 operate on directory trees. This code comes from 4.4 BSD.
1750 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1751 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1752 NSS scheme used in glibc.
1754 * There is a new malloc debugging hook `__memalign_hook'.
1756 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1757 `unsigned int' in <sys/types.h>. These are for compatibility only and
1758 their use is discouraged.
1760 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1761 done differently, so that it works even without GNU ld.
1763 * New function `euidaccess' checks allowed access to a file like `access',
1764 but using the effective IDs instead of the real IDs.
1766 * The time zone data files have been updated for the latest and greatest
1767 local time conventions of the countries of the world.
1769 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1772 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1773 for formatting floating-point numbers. They are provided only for
1774 compatibility; new programs should use `sprintf' instead. There are
1775 also equivalent function for the `long double' floating-point type and
1776 all functions also exist in a reentrant form.
1778 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1779 functions for maintaining the login-record files (primarily of use to
1780 system programs such as `login'), and convenient functions for
1781 allocating and initializing a pseudo-terminal (pty) device.
1783 * Ulrich Drepper has contributed new support for System V style
1784 shared memory and IPC on systems that support it.
1786 * Ulrich Drepper has contributed several miscellaneous new functions found
1787 in System V: The `hsearch' family of functions provide an effective
1788 implementation of hash tables; `a64l' and `l64a' provide a very simple
1789 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1792 * Ulrich Drepper has contributed new reentrant counterparts for the
1793 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1795 * Ulrich Drepper has contributed new, highly-optimized versions of several
1796 string functions for the i486/Pentium family of processors.
1798 * Ulrich Drepper has updated the Linux-specific code, based largely
1799 on work done in Hongjiu Lu's version of GNU libc for Linux.
1800 The GNU library now supports Linux versions 2.0.10 and later,
1801 using the ELF object file format (i[3456]86-*-linux).
1803 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1805 * David Mosberger-Tang and Richard Henderson have ported the C library
1806 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1807 dynamic linking support for ELF/Alpha.
1809 * Richard Henderson contributed several Alpha optimized assembler function
1810 for arithmetic and string handling.
1812 * Ulrich Drepper has contributed a new set of message catalog functions to
1813 support multiple languages using the <libintl.h> interface, for use with
1814 his new package GNU gettext. Translation volunteers have contributed
1815 catalogs of the library's messages in Spanish, German, and Korean.
1817 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1818 program and the `catgets' function for reading the catalog files it
1819 creates. (The <libintl.h> interface is preferred; we include the
1820 <nl_types.h> interface using `catgets' only for source compatibility with
1821 programs already written to use it.)
1823 * New header file <values.h> gives SVID-compatible names for <limits.h>
1826 * Various new macros, declarations, and small header files for compatibility
1829 * New function `group_member' is a convenient way to check if a process has
1830 a given effective group ID.
1832 * When using GCC 2.7 and later, the socket functions are now declared in a
1833 special way so that passing an argument of type `struct sockaddr_in *',
1834 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1835 `struct sockaddr *' type, does not generate a type-clash warning.
1837 * New function `error' declared in header file <error.h> is a convenient
1838 function for printing error messages and optionally exiting; this is the
1839 canonical function used in GNU programs. The new functions `err', `warn',
1840 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1841 doing the same thing.
1843 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1844 POSIX.2 `glob' function to do ~ and {...} expansion.
1846 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1847 `clearenv' which is used in POSIX.9 is also available.
1849 * New function `getsid' returns session ID number on systems that support it.
1851 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1852 files <db.h> and <mpool.h> provide a rich set of functions for several
1853 types of simple databases stored in memory and in files, and <ndbm.h> is
1854 an old `ndbm'-compatible interface using the `db' functions. Link with
1855 `-ldb' to get these functions.
1857 * New macro `strdupa' copies a string like `strdup', but uses local stack
1858 space from `alloca' instead of dynamic heap space from `malloc'.
1860 * New function `strnlen' is like `strlen' but searches only a given maximum
1861 number of characters for the null terminator. `stpncpy', `strndup' and
1862 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1865 * New function `statfs' in header <sys/statfs.h>.
1867 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1868 provide convenient functions for operating on blocks of null-terminated
1871 * A new suite of functions in <utmp.h> handle all the details of reading
1872 and writing the utmp file.
1874 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1877 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1878 completely POSIX compliant and also implemented the extended functionality
1879 to handle alternate digit representation and alternate era date formats.
1881 * Ulrich Drepper provided an implementation of the `strptime' function
1882 defined in XPG4.2 which transforms a string into a `struct tm' value.
1884 * Paul Eggert provided the tzselect shell script as part of the timezone
1885 code. The shell script makes it easy to select the correct timezone
1888 * The implementation of the malloc family of functions is completely replaced
1889 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1890 The implementation uses the mmap function (if available) and it is
1891 optimized for the use in multi threaded programs.
1893 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1894 functions. This new functionality is usable by specifying a special
1895 salt string and it is compatible with implementation on *BSD systems.
1897 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1898 `getsubopt' to handle second level command line options, `bsd_signal'
1899 to access BSD style `signal' functionality, the obsolete `regexp' style
1902 * the `lchown' function is available on system which support this
1905 * The implementation of the shadow password handling function was contributed
1908 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1910 * POSIX.1g support was added. The <sys/select.h> header is available,
1911 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1912 implementation of `getaddrinfo'.
1916 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1918 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1919 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1921 * The new function `daemon' from 4.4 BSD is useful for server programs that
1922 want to put themselves in the background.
1924 * Joel Sherrill has contributed support for several standalone boards that
1925 run without an operating system.
1927 * `printf', `scanf' and friends now accept a `q' type modifier for long
1928 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1930 * All of the code taken from BSD (notably most of the math and networking
1931 routines) has been updated from the BSD 4.4-Lite release.
1933 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1935 * The new functions `getdomainname' and `setdomainname' fetch or change the
1936 YP/NIS domain name. These are system calls which exist on systems which
1939 * The time zone data files have been updated for the latest international
1942 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1943 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1947 * The C library now includes support for Sun RPC, from Sun's free
1948 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1949 are included. (There is still no support for YP.)
1951 * Tom Quinn has contributed a port of the C library to SGI machines running
1952 Irix 4 (mips-sgi-irix4).
1954 * The new `lockf' function is a simplified interface to the locking
1955 facilities of `fcntl', included for compatibility.
1957 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1959 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1961 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1964 * The error message printed by `assert' for a failed assertion now includes
1965 the name of the program (if using GNU ld) and the name of the calling
1966 function (with versions of GCC that support this).
1968 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1970 * The library now includes the <sys/mman.h> header file and memory
1971 management functions `mmap', `munmap', `mprotect', `msync', and
1972 `madvise', on systems that support those facilities.
1974 * The interface for `mcheck' has changed slightly: the function called to
1975 abort the program when an allocation inconsistency is detected now takes
1976 an argument that indicates the type of failure. The new function
1977 `mprobe' lets you request a consistency check for a particular block at
1978 any time (checks are normally done only when you call `free' or `realloc'
1981 * It is now possible to easily cross-compile the C library, building on one
1982 system a library to run on another machine and/or operating system. All
1983 you need to do is set the variable `HOST_CC' in `configparms' to the
1984 native compiler for programs to run on the machine you are building on (a
1985 few generator programs are used on Unix systems); set `CC' to the
1988 * The new function `fexecve' (only implemented on the GNU system) executes
1989 a program file given a file descriptor already open on the file.
1993 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1994 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1996 * You can set the variable `libprefix' in `configparms' to specify a prefix
1997 to be prepended to installed library files; this makes it easy to install
1998 the GNU C library to be linked as `-lgnuc' or whatever.
2000 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2001 copies a limited number of characters from a string, and returns the
2002 address of the last character written.
2004 * You no longer need to check for whether the installed `stddef.h' is
2005 compatible with the GNU C library. configure now checks for you.
2007 * You can now define a per-stream `fileno' function to convert the
2008 stream's cookie into an integral file descriptor.
2010 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2011 allocates zero bytes of storage, and returns a unique pointer which
2012 you can pass to `realloc' or `free'. The behavior is undefined if
2013 you dereference this pointer.
2015 * The C library now runs on Sony NEWS m68k machines running either
2016 NewsOS 3 or NewsOS 4.
2018 * The new `syscall' function is a system-dependent primitive function
2019 for invoking system calls. It has the canonical behavior on Unix
2020 systems, including unreliable return values for some calls (such as
2021 `pipe', `fork' and `getppid').
2023 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2024 to `EAGAIN', which is the preferred name. On systems whose kernels
2025 use two distinct codes, the C library now translates EWOULDBLOCK to
2026 EAGAIN in every system call function.
2030 * The GNU C Library Reference Manual is now distributed with the library.
2031 `make dvi' will produce a DVI file of the printed manual.
2032 `make info' will produce Info files that you can read on line using C-h i
2033 in Emacs or the `info' program.
2034 Please send comments on the manual to bug-glibc-manual@gnu.org.
2036 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2038 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2040 * Jason Merrill has contributed a port to the Sequent Symmetry running
2041 Dynix version 3 (i386-sequent-dynix).
2043 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2044 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2046 * New function `memory_warnings' lets you arrange to get warnings when
2047 malloc is running out of memory to allocate, like Emacs gives you.
2049 * The C library now contains the relocating allocator used in Emacs 19 for
2050 its editing buffers. This allocator (ralloc) minimizes allocation
2051 overhead and fragmentation by moving allocated regions around whenever it
2052 needs to. You always refer to a ralloc'd region with a "handle" (a
2053 pointer to a pointer--an object of type `void **').
2055 * There is a new `printf' format: `%m' gives you the string corresponding
2056 to the error code in `errno'.
2058 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2059 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2060 pass, the `a' modifier says to fill in a `char **' you pass with a
2063 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2064 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2065 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2067 * `mkstemp' is a traditional Unix function to atomically create and open a
2068 uniquely-named temporary file.
2072 * The standard location for the file that says what the local timezone is
2073 has changed again. It is now `/usr/local/etc/localtime' (or more
2074 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2076 * The distribution no longer contains any files with names longer than 14
2079 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2080 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2082 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2086 * The configuration process has changed quite a bit. The `configure'
2087 script is now used just like the configuration scripts for other GNU
2088 packages. The `sysdeps' directory hierarchy is much rearranged.
2089 The file `INSTALL' explains the new scheme in detail.
2091 * The header files no longer need to be processed into ANSI C and
2092 traditional C versions. There is just one set of files to install, and
2093 it will work with ANSI or old C compilers (including `gcc -traditional').
2095 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2096 MIPS DECStation running Ultrix 4.
2098 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2099 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2100 made itself into a shared library.
2102 * Yet further improved support for the i386, running 4.3 BSD-like systems
2103 (such as Mach 3 with the Unix single-server), or System V.
2105 * New function `strncasecmp' to do case-insensitive string comparison
2106 with limited length.
2108 * New function `strsep' is a reentrant alternative to `strtok'.
2110 * New functions `scandir' and `alphasort' for searching directories.
2112 * New function `setenv' is a better interface to `putenv'.
2114 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2115 function for traversing a directory tree.
2117 * The GNU obstack package is now also part of the C library.
2118 The new function `open_obstack_stream' creates a stdio stream that
2119 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2120 formatted output directly to an obstack.
2122 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2123 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2125 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2127 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2128 things to your strings.
2130 * There are some new test programs: test-fseek, testmb, and testrand.
2132 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2133 These ports are not finished, but are a good starting place for really
2134 supporting those systems.
2136 * `/etc/localtime' is now the standard location for the file that says what
2137 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2138 This follows the general principle that `/etc' is the place for all local
2139 configuration files.
2141 * The C library header files now use `extern "C"' when used by the C++
2142 compiler, so the C library should now work with C++ code.
2144 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2145 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2148 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2149 function which uses the `merge sort' algorithm, and is said to be
2150 significantly faster than the old GNU `qsort' function. Merge sort is
2151 now the standard `qsort' function. The new algorithm can require a lot
2152 of temporary storage; so, the old sorting function is called when the
2153 required storage is not available.
2155 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2156 provides the Unix `crypt' function, plus some other entry points.
2158 * The code and header files taken from 4.4 BSD have been updated with the
2159 latest files released from Berkeley.
2161 ----------------------------------------------------------------------
2162 Copyright information:
2164 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2166 Permission is granted to anyone to make or distribute verbatim copies
2167 of this document as received, in any medium, provided that the
2168 copyright notice and this permission notice are preserved,
2169 thus giving the recipient permission to redistribute in turn.
2171 Permission is granted to distribute modified versions
2172 of this document, or of portions of it,
2173 under the above conditions, provided also that they
2174 carry prominent notices stating who last changed them.
2177 version-control: never
projects / platform / upstream / glibc.git / blob