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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.
7 \f
8 Version 2.17
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,
22 14807, 14809, 14811, 14815, 14821, 14824, 14831, 14838.
24 * Port to ARM AArch64 contributed by Linaro.
26 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
27 Optimized versions of memcpy, memset, and memcmp added for System z10 and
28 zEnterprise z196.
29 Implemented by Andreas Krebbel.
31 * The new function secure_getenv allows secure access to the environment,
32 returning NULL if running in a SUID/SGID process. This function replaces
33 the internal function __secure_getenv.
35 * SystemTap static probes have been added into the dynamic linker.
36 Implemented by Gary Benson.
38 * Optimizations of string functions strstr, strcasestr and memmem.
39 Implemented by Maxim Kuvyrkov.
41 * The minimum Linux kernel version that this version of the GNU C Library
42 can be used with is 2.6.16.
44 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
45 powerpc POWER7. Implemented by Will Schmidt.
47 * New configure option --disable-nscd builds the C library such that it
48 never attempts to contact the Name Service Caching Daemon (nscd).
49 New configure option --disable-build-nscd avoids building nscd itself;
50 this is the default if --disable-nscd is used.
52 * The ttyname and ttyname_r functions on Linux now fall back to searching for
53 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
54 allows creation of chroots without the procfs mounted on /proc.
56 * The `crypt' function now fails if passed salt bytes that violate the
57 specification for those values. On Linux, the `crypt' function will
58 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
59 enabled, and fail on encrypted strings using the MD5 or DES algorithm
60 when the mode is enabled.
62 * The `clock_*' suite of functions (declared in <time.h>) is now available
63 directly in the main C library. Previously it was necessary to link with
64 -lrt to use these functions. This change has the effect that a
65 single-threaded program that uses a function such as `clock_gettime' (and
66 is not linked with -lrt) will no longer implicitly load the pthreads
67 library at runtime and so will not suffer the overheads associated with
68 multi-thread support in other code such as the C++ runtime library.
69 \f
70 Version 2.16
72 * The following bugs are resolved with this release:
74 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
75 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
76 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
77 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
78 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
79 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
80 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
81 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
82 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
83 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
84 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
85 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
86 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
87 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
88 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
89 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
90 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
91 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
92 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
93 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
94 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
95 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
96 14278.
98 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
99 configuring glibc with:
100 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
101 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
102 Implemented by H.J. Lu.
104 * ISO C11 support:
106 + define static_assert
108 + do not declare gets
110 + declare at_quick_exit and quick_exit also for ISO C11
112 + aligned_alloc. NB: The code is deliberately allows the size parameter
113 to not be a multiple of the alignment. This is a moronic requirement
114 in the standard but it is only a requirement on the caller, not the
115 implementation.
117 + timespec_get added
119 + uchar.h support added
121 + CMPLX, CMPLXF, CMPLXL added
123 Implemented by Ulrich Drepper.
125 * Support for the IA-64 has been moved to ports.
127 * Remove support for anything but ELF binary format
129 * Checking versions of poll, ppoll added.
130 Implemented by Ulrich Drepper.
132 * More generic and 64-bit performance optimizations to math functions.
133 Implemented by Ulrich Drepper.
135 * New configure option --enable-obsolete-rpc makes the deprecated RPC
136 headers and functions available at compile time as they were before
137 version 2.14. This option will be removed at some time in the future
138 after the TI-RPC library becomes fully sufficient for the needs of
139 existing applications.
141 * Compatibility code for Linux kernel versions before 2.4 has been removed.
142 Note that glibc is not expected to work with any Linux kernel version
143 before 2.6.
145 * New header <sys/auxv.h> and function getauxval allowing easy access to
146 the AT_* key-value pairs passed from the Linux kernel. The header also
147 defines the HWCAP_* bits associated with the AT_HWCAP key.
149 * New locales: mag_IN
151 * New configure option --enable-systemtap builds SystemTap static probes
152 into libc for setjmp and longjmp and into libpthread for various operations.
153 So far the setjmp/longjmp probes and some of the libpthread probes are
154 provided only for i*86 and x86_64.
155 Implemented by Roland McGrath and Rayson Ho.
157 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
159 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
160 and Will Schmidt.
162 * More optimized functions for SPARC. Implemented by David S. Miller.
164 * Improved support for cross-compilation, especially bootstrap builds
165 without a previously built glibc.
167 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
168 Chris Metcalf from Tilera.
170 * Support for the old ARM ABI has been removed from ports. Only the EABI is
171 now supported for ARM processors.
173 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
174 as the name of the dynamic linker, to distinguish it from the
175 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
177 * Support for CRIS has been removed from ports.
179 * A new class of installed header has been documented for low-level
180 platform-specific functionality. PowerPC added the first instance with a
181 function to provide time base register access. Contributed by Tulio
182 Magno Quites Machado Filho.
184 * ix86 configurations now install header files that are consistent with
185 what x86-64 configurations install. These same header files can be used
186 for -m32, -m64, or -mx32 builds.
187 Contributed by H.J. Lu.
189 * Math library bug fixes. A thorough audit of all open math library bugs was
190 conducted by Joseph Myers. Significant progress was made on many math
191 library bugs resulting in more accurate exceptions and function results.
192 Many thanks to all those that contributed including Andreas Jaeger for his
193 patch review and work on the x87 trigonometric instruction issues.
195 * Timezone data is no longer installed. Timezone-related binaries and scripts
196 will continue to be installed. Users should obtain their timezone data from
197 their distribution provider or from the tzdata package at
198 <ftp://munnari.oz.au/pub/>.
199 \f
200 Version 2.15
202 * The following bugs are resolved with this release:
204 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
205 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
206 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
207 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
208 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
209 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
210 13484, 13506, 13515, 13523, 13524, 13538, 13540
212 * New program pldd to list loaded object of a process
213 Implemented by Ulrich Drepper.
215 * Add nss_db support back to glibc. No more dependency on Berkeley db
216 and support for initgroups lookups.
217 Implemented by Ulrich Drepper.
219 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
220 Contributed by HJ Lu.
222 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
223 Contributed by HJ Lu.
225 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
226 on x86-32 and x86-64.
227 Contributed by Liubov Dmitrieva.
229 * Optimized strchr and strrchr for SSE on x86-32.
230 Contributed by Liubov Dmitrieva.
232 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
233 for x86-64 and x86-32.
234 Contributed by Liubov Dmitrieva.
236 * New interfaces: scandirat, scandirat64
237 Implemented by Ulrich Drepper.
239 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
240 Implemented by Ulrich Drepper.
242 * nscd now also caches the netgroup database.
243 Implemented by Ulrich Drepper.
245 * Integrate libm with gcc's -ffinite-math-only option.
246 Implemented by Ulrich Drepper.
248 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
249 to math functions. Implemented by Ulrich Drepper.
251 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
252 Implemented by Ulrich Drepper.
254 * New Linux interfaces: process_vm_readv, process_vm_writev
256 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
257 Implemented by Ulrich Drepper.
259 * Optimized nearbyint and strcasecmp for PPC.
260 Implemented by Adhemerval Zanella.
262 * New locales: bho_IN, unm_US, es_CU, ta_LK
263 \f
264 Version 2.14
266 * The following bugs are resolved with this release:
268 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
269 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
270 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
271 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
272 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
273 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
274 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
275 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
276 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
277 12795, 12811, 12813, 12814, 12841
279 * The RPC implementation in libc is obsoleted. Old programs keep working
280 but new programs cannot be linked with the routines in libc anymore.
281 Programs in need of RPC functionality must be linked against TI-RPC.
282 The TI-RPC implementation is IPv6 enabled and there are other benefits.
284 Visible changes of this change include (obviously) the inability to link
285 programs using RPC functions without referencing the TI-RPC library and the
286 removal of the RPC headers from the glibc headers.
287 Implemented by Ulrich Drepper.
289 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
290 syncfs, setns, sendmmsg
292 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
293 yue_HK, lij_IT, mhr_RU
295 * New encodings: CP770, CP771, CP772, CP773, CP774
297 * New program sotruss to trace calls through PLTs
298 Implemented by Ulrich Drepper.
300 * The malloc hook implementation is marked deprecated and will be removed
301 from the default implementation in the next version. The design never
302 worked ever since the introduction of threads. Even programs which do
303 not create threads themselves can use multiple threads created internally.
304 \f
305 Version 2.13
307 * The following bugs are resolved with this release:
309 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
310 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
311 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
312 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
313 12378, 12394, 12397
315 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
317 * POWER7 optimizations: memset, memcmp, strncmp
319 * New optimized string functions for x86-64: strnlen (SSE2),
320 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
321 Implemented by Ulrich Drepper.
322 \f
323 Version 2.12
325 * The following bugs are resolved with this release:
327 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
328 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
329 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
330 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
331 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
332 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
333 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
334 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
336 * New interfaces: pthread_getname_np, pthread_setname_np
338 * New Linux interface: recvmmsg
340 * STT_GNU_IFUNC implemented for Sparc by David Miller.
342 * The dynamic linker now recognizes supported ABI versions from the
343 EI_ABIVERSION field in the ELF header.
344 Implemented by Ulrich Drepper.
346 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
347 will not be used to fill in password fields in the passwd.byname replies.
348 Instead it is used to synthesize the shadow.byname table, should it be
349 missing. This is a useful mode in some installations involving Solaris.
350 Implemented by Ulrich Drepper.
352 * New locales: kok_IN, sq_MK, cv_RU
353 \f
354 Version 2.11
356 * The following bugs are resolved with this release:
358 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
359 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
360 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
361 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
362 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
363 10789, 10817, 10823, 10840, 10847
365 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
366 mkostemps64
367 Implemented by Ulrich Drepper.
369 * Checking version of longjmp added that fails if an uninitialized stack
370 frame would be created. Implemented by Ulrich Drepper.
372 * STT_GNU_IFUNC is now supported in static executables.
373 Implemented by H.J. Lu.
375 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
377 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
378 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
379 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
380 Contributed by H.J. Lu.
382 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
383 Implemented by Ulrich Drepper.
385 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
386 strstr, strcasestr.
387 Contributed by H.J. Lu.
389 * Support for fma instruction in AVX on x86-64.
390 Implemented by H.J. Lu and Ulrich Drepper.
392 * AVX support in x86-64 auditing support in ld.so.
393 Implemented by H.J. Lu.
395 * STB_GNU_UNIQUE support added.
396 Implemented by Ulrich Drepper.
398 * Implement second fallback mode for optimized DNS lookup for even more
399 broken environments. If two requests from the same port are not
400 handled correctly close the socket and open a new one before sending
401 the second request. The 'single-request-reopen' option in /etc/resolv.conf
402 can be used to select this mode right away, instead of rediscovering the
403 necessity is every process again.
404 Implemented by Ulrich Drepper.
406 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
407 Implemented by Adam Tkac.
409 * Optimized iconv conversions for S390x.
410 Implemented by Andreas Krebbel.
412 * Using condvars with PI mutexes is now more efficient due to kernel
413 support for requeueing to PI futexes. NPTL support added for x86-64.
414 Implemented by Ulrich Drepper.
416 * New locales: ps_AF, my_MM
417 \f
418 Version 2.10
420 * The following bugs are resolved with this release:
422 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
423 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
424 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
425 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
426 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
428 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
429 Implemented by Ulrich Drepper.
431 * New Linux interfaces: accept4, fallocate, fallocate64.
432 Implemented by Ulrich Drepper.
434 * Correct declarations of string function when used in C++ code. This
435 could lead to compile errors for invalid C++ code.
437 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
438 now in POSIX.
440 * New POSIX 2008 interface: psiginfo
441 Implemented by Ulrich Drepper.
443 * New ISO C++1x interfaces: quick_exit, at_quick_exit
444 Implemented by Ulrich Drepper.
446 * Support for selecting between multiple function definitions at runtime
447 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
449 * The libcrypt library can now use the hash function implementations in
450 NSS. Implemented by Ulrich Drepper.
452 * The malloc implementation can be compiled to be less memory efficient
453 but higher performing in multi-threaded programs.
454 Implemented by Ulrich Drepper.
456 * New locales: nan_TW@latin, ks_IN
458 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
459 Implemented by Ulrich Drepper.
461 * Extended printf hook support. It is possible to use user-defined types
462 and extend existing format specifiers.
463 Implemented by Ulrich Drepper.
465 * Handling for group shadow files has been added.
466 Implemented by Ulrich Drepper.
468 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
469 servers (the case, e.g., for some people using the built-in DNS
470 server in ADSL modems/routers). There is a once-per-process timeout
471 in case of a broken server. To avoid it, users can run nscd or put
472 'options single-request' in /etc/resolv.conf.
473 Implemented by Ulrich Drepper.
474 \f
475 Version 2.9
477 * The following bugs are resolved with this release:
479 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
480 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
481 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
482 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
483 6968, 6974, 6980, 6995, 7008, 7009, 7029
485 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
486 up at the same time. Implemented by Ulrich Drepper.
488 * TLS descriptors for LD and GD on x86 and x86-64.
489 Implemented by Alexandre Oliva.
491 * getaddrinfo now handles DCCP and UDPlite.
492 Implemented by Ulrich Drepper.
494 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
495 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
496 Implemented by Ulrich Drepper.
498 * New implementation of memmem, strstr, and strcasestr which is O(n).
499 Implemented by Eric Blake.
501 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
503 * Implement "e" option for popen to open file descriptor with the
504 close-on-exec flag set. Implemented by Ulrich Drepper.
506 * Implement "b" mode for fmemopen. In this mode writes writes don't
507 implicitly add a NUL byte and seeks from the end of the buffer really
508 use the buffer end, not the string length as the basis.
509 Implemented by Ulrich Drepper.
511 * Many functions, exported and internal, now atomically set the close-on-exec
512 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
514 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
515 Sinhala)
516 Implemented by Pravin Satpute.
518 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
519 \f
520 Version 2.8
522 * The following bugs are resolved with this release:
524 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
525 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
526 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
527 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
528 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
529 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
530 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
532 * New locales: bo_CN, bo_IN, shs_CA.
534 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
536 * Sorting rules for some Indian languages (Devanagari and Gujarati).
537 Implemented by Pravin Satpute.
539 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
541 * nscd caches now all timeouts for DNS entries
542 Implemented by Ulrich Drepper.
544 * nscd is more efficient and wakes up less often.
545 Implemented by Ulrich Drepper.
547 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
548 vdprintf, and obstack_vprintf.
549 Implemented by Jakub Jelinek.
551 * Faster memset for x86-64.
552 Implemented by Harsha Jagasia and H.J. Lu.
554 * Faster memcpy on x86.
555 Implemented by Ulrich Drepper.
557 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
558 Implemented by Ulrich Drepper.
560 * Faster sqrt and sqrtf implemention for some PPC variants.
561 Implemented by Steven Munroe.
562 \f
563 Version 2.7
565 * The following bugs are resolved with this release:
567 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
568 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
569 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
570 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
571 5071, 5103, 5104, 5112, 5113, 5184, 5186
573 * More checking functions: fread, fread_unlocked, open*, mq_open.
574 Implemented by Jakub Jelinek and Ulrich Drepper.
576 * Extend fortification to C++. Implemented by Jakub Jelinek.
578 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
579 by not recognizing 'a' as a modifier when those specs are requested.
580 Implemented by Jakub Jelinek.
582 * PPC optimizations to math and string functions.
583 Implemented by Steven Munroe.
585 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
586 options to be passed. Implemented by Ulrich Drepper.
588 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
590 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
591 Implemented by Ulrich Drepper.
593 * Handle private futexes in the NPTL implementation.
594 Implemented by Jakub Jelinek and Ulrich Drepper.
596 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
597 Implemented by Roland McGrath and Ulrich Drepper.
599 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
601 * SHA-256 and SHA-512 based password encryption.
602 Implemented by Ulrich Drepper.
604 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
605 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
606 yo_NG.
608 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
609 Implemented by Ulrich Drepper.
610 \f
611 Version 2.6
613 * The following bugs are resolved with this release:
615 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
616 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
617 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
618 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
619 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
620 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
621 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
622 4702, 4858
624 * New Linux interfaces: epoll_pwait, sched_getcpu.
626 * New generic interfaces: strerror_l.
628 * nscd can now cache the services database. Implemented by Ulrich Drepper.
629 \f
630 Version 2.5
632 * The following bugs are resolved with this release:
634 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
635 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
636 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
637 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
638 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
639 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
640 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
641 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
642 3225, 3251, 3252, 3253, 3273
644 * For Linux, the sorting of addresses returned by getaddrinfo now also
645 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
646 Implemented by Ulrich Drepper.
648 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
649 Implemented by Ulrich Drepper.
651 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
653 * New iconv module for MIK. Contributed by Alexander Shopov.
655 * For sites with broken group and/or passwd database, the auto-propagate
656 option of nscd can prevent creating ID lookup entries from the results
657 of a name lookup and vice versa. This usually is no problem but some
658 site might have problems with the default behavior.
659 Implemented by Ulrich Drepper.
661 * Iterating over entire database in NIS can be slow. With the
662 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
663 to trade time for memory. The entire database will be read at once.
664 Implemented by Ulrich Drepper.
666 * The interfaces introduced in RFC 3542 have been implemented by
667 Ulrich Drepper.
669 * Support for the new ELF hash table format was added by Ulrich Drepper.
671 * Support for priority inheritance mutexes added by Jakub Jelinek and
672 Ulrich Drepper.
674 * Support for priority protected mutexes added by Jakub Jelinek.
676 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
677 or_IN, csb_PL, fy_NL, sr_ME.
678 \f
679 Version 2.4
681 * More overflow detection functions.
683 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
684 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
686 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
687 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
688 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
689 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
690 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
691 by Masahide Washizawa.
693 * It is now possible to install audit libraries for the dynamic linker using
694 LD_AUDIT. Implemented by Ulrich Drepper.
696 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
697 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
698 For a libc and libpthread that works well on Linux 2.4 kernels, we
699 recommend using the stable 2.3 branch.
701 * The new function open_wmemstream acts like open_memstream,
702 but uses a wchar_t wide character buffer.
704 * The new function ppoll is an improved version of poll, similar to pselect.
706 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
707 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
708 renameat, unlinkat, linkat, symlinkat, readlinkat.
710 * New Linux kernel system calls: unshare,
711 inotify_init, inotify_add_watch, inotify_rm_watch.
713 * The euidaccess function is now also known by the alias eaccess,
714 for compatibility with some other systems.
716 * Timezone data updated to 2006b version.
717 \f
718 Version 2.3.6
720 * The following bugs are resolved with this release:
722 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
723 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
724 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
725 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
726 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
727 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
729 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
731 * As of this release, GCC 4 can be used to compile the C Library.
733 * Timezone data updated to 2005m version.
734 \f
735 Version 2.3.5
737 * The following bugs are resolved with this release:
739 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
740 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
741 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
742 777, 787, 821, 822, 823, 825
744 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
745 \f
746 Version 2.3.4
748 * Support for RFC 3678. Real implementations exist only for Linux so far.
749 Implemented by Ulrich Drepper.
751 * nscd can now cache entries persistently. Expiring entries are reloaded.
752 For speedups the cache can be shared in memory with client processes.
753 Implemented by Ulrich Drepper.
755 * nscd can now perform SELinux checks.
756 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
758 * getaddrinfo queries are now cached. Canonical name lookup is performed
759 efficiently.
760 Implemented by Ulrich Drepper.
762 * The nothrow function attribute is used when headers are used by gcc when
763 compiling C code. This can avoid significant amounts of exception
764 handling data.
766 * The malloc functions perform more error checking and are stricter when
767 it comes to reacting on errors. The default action is to terminate
768 the process after showing an error message. Implemented by Ulrich Drepper.
770 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
771 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
773 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
774 namespaces using the new function dlmopen(). This feature is of course,
775 like most other dynamic loading functionality, not available in statically
776 linked applications. Implemented by Ulrich Drepper.
778 * Low-overhead boundary checking variants of string and some stdio functions
779 were added. These are to be used in conjunction with a gcc patch by
780 Jakub Jelinek which adds calls to these functions if possible.
781 Implemented by Jakub Jelinek and Ulrich Drepper.
783 * Old code for several operating systems and machine architectures that
784 have not been in working condition in a long time have been removed from
785 the main source tree maintained by the GNU C Library's maintainers.
786 These files are now reside in the separate `ports' source module
787 that is usable as an add-on when building the library.
788 \f
789 Version 2.3.3
791 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
792 interrogate the dynamic linker, compatible with the Solaris interface.
794 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
795 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
797 * getifaddrs now uses the netlink interface on Linux to get its information.
798 Implemented by Thorsten Kukuk.
800 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
801 Implemented by Ulrich Drepper.
803 * support for non-executable stacks on x86 has been added. Changes mostly
804 by Roland McGrath.
806 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
807 and Ulrich Drepper.
809 * getaddrinfo now performs destination address selection according to
810 RFC 3484.
811 \f
812 Version 2.3.2
814 * Thread-safe interfaces for many functions that access locale data
815 were added in version 2.3, but these features were omitted from NEWS.
816 Many functions have variants with an `_l' suffix that take a `locale_t'
817 object as a parameter rather than consulting the current locale.
818 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
819 create and maintain `locale_t' objects. Additionally, the new function
820 `uselocale' sets "the current locale" (as used by functions not so
821 parameterized) set for an individual thread. These features were added
822 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
824 * The functions getresuid, getresgid, setresuid, and setresgid, which
825 have long been available on Linux, are now declared in <unistd.h>
826 and are now also available on the Hurd.
828 * ELF thread-local storage support (TLS) now works on x86-64.
830 * The new dynamic string token $LIB is expanded in shared library names.
831 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
833 * Aldy Hernandez contributed complete software floating point support for
834 PowerPC machines with no FPU.
836 * fexecve is implemented on Linux.
838 * The `btowc' function should work at least twice as fast due to
839 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
841 * With approriate thread add-ons cancelable functions are now implemented
842 in libc.so as well. No need to call the function in libpthread. This
843 change allowed to finally disable the incorrect and expensive handling
844 of weak definition in ld.so.
846 * Yet more PLT entries in libc.so have been removed. We finally arrived
847 at the bare minimum. Startup times improved appropriately.
849 * Support for the new Linux/x86 system call interface was added. The
850 AT_SYSINFO auxiliary vector entry is recognized and handled.
851 \f
852 Version 2.3
854 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
855 charsets.
857 * iconv (the program and the interface) now accepts empty names (excluding
858 options like //TRANSLIT) to mean "use charset of current locale".
860 * localedef can now transliterate characters in strings which are not in
861 the provided charmap. The information from the input locale is used.
863 * Prelinking support was added for ELF targets. This requires additional
864 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
866 * Read-only stdio streams now use mmap to speed up operation by eliminating
867 copying and buffer underflows. To use add 'm' to the mode string of
868 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
870 * The malloc functions were completely rewritten by Wolfram Gloger based
871 on Doug Lea's malloc-2.7.0.c.
873 * Isamu Hasegawa contributed a completely new and POSIX-conformant
874 implementation of regex.
876 * Bruno Haible upgraded the iconv and locale implementation to support
877 Unicode 3.2.
879 * Contents of the LC_* and LANG environment variables in the CEN style are
880 not recognized anymore. It never was used. Change by Ulrich Drepper.
882 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
883 thread-local storage (TLS) ABI on some platforms.
884 Changes by Ulrich Drepper. SH support by Kaz Kojima.
886 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
887 EUC-JISX0213, and TSCII.
889 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
890 BSD-compatible interface for getting all network interface addresses.
891 Implementation for IPv4 by Roland McGrath.
893 * Loading of locale data is faster due to the introduction of a locale
894 archive. Implemented by Roland McGrath and Ulrich Drepper.
896 * Startup times are significantly reduced by not using exported functions
897 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
898 and Ulrich Drepper.
900 * Steven Munroe contributed a port to PowerPC64/Linux.
901 \f
902 Version 2.2.6
904 * The Hurd now uses the GNU libio implementation of stdio rather than the
905 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
907 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
908 with the same behavior as the Linux system call of the same name.
909 \f
910 Version 2.2.5
912 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
913 128-bit long double format.
915 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
916 IBM1161, and IBM1162 charsets.
918 * Andreas Jaeger contributed a port to x86-64/Linux.
920 * Peter Bruin contributed a port to PowerPC/Hurd.
922 * libc functions using I/O streams now can handle wide-oriented streams
923 as well.
925 * optimizations in the dynamic linker. Binaries created by recent binutils
926 versions start up quicker due to reduced time spent on relocations.
928 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
929 \f
930 Version 2.2.4
932 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
933 asinh, atanh, j0 for the 128-bit long double format.
935 * Bruno Haible updated all the code handling Unicode in some form to
936 support Unicode 3.1.
938 * Speed of regex for single-byte locales is back to previous levels.
939 Patch by Isamu Hasegawa.
941 * Alpha, SPARC, and IA-64 now also using floating stacks.
943 * Startup time of internationalized applications greatly improved through
944 iconv cache. Use iconvconfig to generate the cache file.
945 Contributed by Ulrich Drepper.
947 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
948 severe performance problems. Patch by David Mosberger.
950 * The Hurd port got a lot more functionality like AIO, various stdio
951 extensions, etc. Mainly done by Roland McGrath.
953 * mtrace can now lookup symbols in shared libraries.
954 \f
955 Version 2.2.3
957 * Intel's IA-64 math library is largely integrated. It provides fast and
958 accurate implementatations for most basic and standard math functions
959 in float, double, and long double format.
961 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
962 and asin for the 96-bit long double format and asin, log, tan for the
963 128-bit long double format.
965 * The beginning of a last-bit accurate math library by IBM Haifa were added.
966 The basic double functions exist today. Contributed by Abraham Ziv
967 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
968 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
970 * An asynchronous name lookup library was added. The interface is designed
971 after POSIX AIO. The proposal was circulated beforehand to get comments.
972 No negative ones came in. Implemented by Ulrich Drepper.
974 * Port to S390/64bit contributed by Martin Schwidefsky
975 <schwidefsky@de.ibm.com>.
977 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
978 of functions for Linux/IA-64.
980 * The RPC code is now thread safe. Threads can now use the same service
981 of different services at the same time. Patch by Eric Norum
982 <eric.norum@usask.ca> with some help by Ulrich Drepper.
984 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
985 family of functions for Linux/S390.
987 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
988 of functions for Linux/x86.
990 * Port to Linux/CRIS contributed by Axis Communications.
991 \f
992 Version 2.2.2
994 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
995 we can now check for namespace violations and missing declarations. The
996 result is that almost all headers are now Unix-compliant (as defined in
997 the upcoming XPG6). The negative side is that some programs might need
998 corrections, too, if they depend on the incorrect form of the headers in
999 previous versions which defined too many symbols and included too many
1000 other headers.
1002 * regex now handles multibyte character sets correctly.
1003 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1005 * iconv (the program) does now conform to the upcoming XPG6 and handles
1006 charmaps. Instead of the charset names the path of charmaps can be
1007 provided and the conversion happens based on this data.
1008 Contributed by Ulrich Drepper.
1010 * The locale program now provides detailed information about the installed
1011 locales. While
1013 locale -a
1015 only lists the names of the supported locales
1017 locale -a --verbose
1019 provides details such as country, language, and codeset name.
1020 Contributed by Ulrich Drepper.
1021 \f
1022 Version 2.2.1
1024 * The gencat program now parses the input file according to the charset
1025 selected by the LC_CTYPE category. This is important for stateful
1026 character sets. To make generating catalogs easier there is a way
1027 to overwrite the charset selected by the locale: before the first
1028 message or $ quote line the catalog can contain a line like
1030 $ codeset=ISO-8859-2
1032 to select the charset (ISO-8859-2 in this case).
1034 Implemented by Shinya Hanataka and Ulrich Drepper.
1036 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1037 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1038 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1040 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1041 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1043 * The LANGUAGE environment variable is now ignored unless the locale is
1044 changed from the default "C" locale.
1046 * The usual bug fixes.
1047 \f
1048 Version 2.2
1050 * Greg McGary added runtime support for bounds checking using gcc's
1051 new -fbounded-pointers option. ix86 target is complete. PowerPC
1052 is in progress.
1054 * Thorsten Kukuk added secure mode support to nscd.
1056 * The Berkeley db libraries have been removed.
1058 Related, the nss_db module is now in a separate package since it
1059 obviously requires a database library being available.
1061 * Wide character I/O streams implemented by Ulrich Drepper.
1063 * Functions from the extended socket API added by Ulrich Drepper.
1065 * Functions feenableexcept and fedisableexcept to control the
1066 behaviour of individual exceptions have been added by Andreas Jaeger.
1068 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1070 * The resolver code has been updated from bind 8.2.3-T5B which supports
1071 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1072 and Mark Kettenis.
1074 This change could in some situations effect backward compatibility. Since
1075 now `_res' is a thread-local instead of a global variable, modifying it
1076 in one thread does not have any effect in other threads.
1078 The resolver library was also extended to allow IPv6 as the transport
1079 protocol for the requests. This work was done by Stig Venaas.
1081 * Compatibility code for K&R C compilers has been removed from the
1082 header files. A ISO C compiler is needed to use the library
1083 (conforming to either C89 or C99 standard).
1085 * Complete rewrite of the localedef program to support multibyte character
1086 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1087 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1088 Implemented by Ulrich Drepper.
1090 Bruno Haible significantly improved the generation and use of the data
1091 structures for the wide character tables.
1093 * Plural handling in gettext implemented by Ulrich Drepper.
1095 * The utmp daemon has been removed.
1097 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1099 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1100 and Yutaka Niibe.
1102 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1104 * POSIX barriers implemented by Kaz Kylheku.
1106 * POSIX spawn function family implemented by Ulrich Drepper.
1108 * POSIX spinlocks are now available.
1110 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1112 * the configure option --enable-kernel=X.Y.Z allows to strip out
1113 compatibility for kernel versions before X.Y.Z. This is currently only
1114 implemented for Linux.
1116 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1117 field sin6_scope_id. This means that all programs using IPv6 should be
1118 recompiled. Don't expect binary compatibility with previous glibc
1119 versions.
1121 * various conversion modules for IBM character sets contributed by
1122 Masahide Washizawa.
1124 * IA-64 port by Jes Sorensen and HJ Lu.
1125 \f
1126 Version 2.1.3
1128 * bug fixes
1130 \f
1131 Version 2.1.2
1133 * bug fixes
1135 \f
1136 Version 2.1.1
1138 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1140 * New xdr functions are added; some rpc functions are now 64bit clean.
1142 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1144 * Fixed known incompatibilities with glibc 2.0.
1146 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1148 * Optimized a number of functions (especially the ELF dynamic loader).
1150 * Update timezone data files.
1152 * lots of charmaps corrections
1154 * some new locale definitions and charmaps
1156 \f
1157 Version 2.1
1159 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1160 conform to POSIX member type requirements. Symbol versions have been
1161 adjusted as needed within the library, and for direct use by applications,
1162 but there is potential for problems if third-party libraries use
1163 struct timeval as part of their interface. This does not present
1164 a problem for X and other "essential" system libraries.
1166 * An additional locale model to support C++ Standard Library locale
1167 model and probably more was implemented by Ulrich Drepper.
1169 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1170 symbol level.
1172 * Miles Bader provided the `argp' function family to support hierachical
1173 command line argument parsing, layered on top of getopt.
1175 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1177 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1178 numbers.
1180 * scanf recognizes the %a and %A format for scanning floating point numbers.
1182 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1183 information and interfaces for the available integer types.
1185 * about 130 new math functions were added to implement the ISO C9x math
1186 library.
1188 * the new header <complex.h> contains definitions of the complex math
1189 functions from ISO C 9X.
1191 * the new header <tgmath.h> defines generic macros to use complex or
1192 real valued functions.
1194 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1196 * Andreas Jaeger provided a test suite for the math library.
1198 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1200 * Ulrich Drepper added character set conversion functions (iconv).
1202 * Optimized string functions have been added.
1204 * The localedata addon is now part of glibc.
1206 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1208 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1209 daemon for NSS (nscd).
1211 Missing a better place here are some numbers on improvements. Under
1212 Linux 2.1.125 un-tar-ing the kernel sources takes
1214 user system wall
1216 using local files 12.19s 6.88s 22.91s
1218 using NIS 13.92s 8.91s 26.34s
1220 using NIS & nscd 10.37s 7.34s 25.30s
1222 using NIS+ 27.57s 30.37s 640.46s
1224 using NIS+ & nscd 10.25s 7.83s 26.51s
1226 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1228 Keep in mind that non-namelookup related operations dominate above times.
1229 It was just a common complain that using NIS+ unpacking the kernel is
1230 horribly slow.
1232 [1] The old nscd implementation is not available anymore since it was
1233 distributed with glibc up to version 2.0.98 and thus is now replaced.
1235 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1237 * Mark Kettenis provided a Hesiod NSS module.
1239 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1240 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1242 * rcmd can now handle netgroups (Dick Streefland).
1244 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1245 Bambrough.
1247 * Support for the IPv6 protocol has been added to the socket API, as per the
1248 latest draft standards.
1250 * Support for Linux 2.2 has been added.
1252 * Interface changes relative to the latest 2.0.x release:
1253 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1254 addseverity NEW: Unix98
1255 alphasort64 NEW: LFS
1256 argp_err_exit_status NEW: argp, GNU ext
1257 argp_error NEW: argp, GNU ext
1258 argp_failure NEW: argp, GNU ext
1259 argp_help NEW: argp, GNU ext
1260 argp_parse NEW: argp, GNU ext
1261 argp_program_bug_address NEW: argp, GNU ext
1262 argp_program_version NEW: argp, GNU ext
1263 argp_program_version_hook NEW: argp, GNU ext
1264 argp_state_help NEW: argp, GNU ext
1265 argp_usage NEW: argp, GNU ext
1266 authdes_create NEW: Secure RPC
1267 authdes_getucred NEW: Secure RPC
1268 authdes_pk_create NEW: Secure RPC
1269 backtrace NEW: GNU ext.
1270 backtrace_symbols NEW: GNU ext.
1271 backtrace_symbols_fd NEW: GNU ext.
1272 cacos NEW: ISO C 9x
1273 cacosf NEW: ISO C 9x
1274 cacosh NEW: ISO C 9x
1275 cacoshf NEW: ISO C 9x
1276 cacoshl NEW: ISO C 9x
1277 cacosl NEW: ISO C 9x
1278 capget NEW: kernel
1279 capset NEW: kernel
1280 carg NEW: ISO C 9x
1281 cargf NEW: ISO C 9x
1282 cargl NEW: ISO C 9x
1283 casin NEW: ISO C 9x
1284 casinf NEW: ISO C 9x
1285 casinh NEW: ISO C 9x
1286 casinhf NEW: ISO C 9x
1287 casinhl NEW: ISO C 9x
1288 casinl NEW: ISO C 9x
1289 catan NEW: ISO C 9x
1290 catanf NEW: ISO C 9x
1291 catanh NEW: ISO C 9x
1292 catanhf NEW: ISO C 9x
1293 catanhl NEW: ISO C 9x
1294 catanl NEW: ISO C 9x
1295 cbc_crypt NEW: Secure RPC
1296 ccos NEW: ISO C 9x
1297 ccosf NEW: ISO C 9x
1298 ccosh NEW: ISO C 9x
1299 ccoshf NEW: ISO C 9x
1300 ccoshl NEW: ISO C 9x
1301 ccosl NEW: ISO C 9x
1302 cexp NEW: ISO C 9x
1303 cexpf NEW: ISO C 9x
1304 cexpl NEW: ISO C 9x
1305 cimag NEW: ISO C 9x
1306 cimagf NEW: ISO C 9x
1307 cimagl NEW: ISO C 9x
1308 clearerr_locked REMOVED
1309 clntunix_create NEW: sunrpc ext
1310 clog NEW: ISO C 9x
1311 clog10 NEW: ISO C 9x
1312 clog10f NEW: ISO C 9x
1313 clog10l NEW: ISO C 9x
1314 clogf NEW: ISO C 9x
1315 clogl NEW: ISO C 9x
1316 conj NEW: ISO C 9x
1317 conjf NEW: ISO C 9x
1318 conjl NEW: ISO C 9x
1319 cpow NEW: ISO C 9x
1320 cpowf NEW: ISO C 9x
1321 cpowl NEW: ISO C 9x
1322 cproj NEW: ISO C 9x
1323 cprojf NEW: ISO C 9x
1324 cprojl NEW: ISO C 9x
1325 creal NEW: ISO C 9x
1326 crealf NEW: ISO C 9x
1327 creall NEW: ISO C 9x
1328 creat64 NEW: LFS
1329 csin NEW: ISO C 9x
1330 csinf NEW: ISO C 9x
1331 csinh NEW: ISO C 9x
1332 csinhf NEW: ISO C 9x
1333 csinhl NEW: ISO C 9x
1334 csinl NEW: ISO C 9x
1335 csqrt NEW: ISO C 9x
1336 csqrtf NEW: ISO C 9x
1337 csqrtl NEW: ISO C 9x
1338 ctan NEW: ISO C 9x
1339 ctanf NEW: ISO C 9x
1340 ctanh NEW: ISO C 9x
1341 ctanhf NEW: ISO C 9x
1342 ctanhl NEW: ISO C 9x
1343 ctanl NEW: ISO C 9x
1344 des_setparity NEW: Secure RPC
1345 ecb_crypt NEW: Secure RPC
1346 endutxent NEW: Unix98
1347 exp10 NEW: ISO C 9x
1348 exp10f NEW: ISO C 9x
1349 exp10l NEW: ISO C 9x
1350 exp2 NEW: ISO C 9x
1351 exp2f NEW: ISO C 9x
1352 exp2l NEW: ISO C 9x
1353 fattach NEW: STREAMS
1354 fdetach NEW: STREAMS
1355 fdim NEW: ISO C 9x
1356 fdimf NEW: ISO C 9x
1357 fdiml NEW: ISO C 9x
1358 feclearexcept NEW: ISO C 9x
1359 fegetenv NEW: ISO C 9x
1360 fegetexceptflag NEW: ISO C 9x
1361 fegetround NEW: ISO C 9x
1362 feholdexcept NEW: ISO C 9x
1363 feof_locked REMOVED
1364 feraiseexcept NEW: ISO C 9x
1365 ferror_locked REMOVED
1366 fesetenv NEW: ISO C 9x
1367 fesetexceptflag NEW: ISO C 9x
1368 fesetround NEW: ISO C 9x
1369 fetestexcept NEW: ISO C 9x
1370 feupdateenv NEW: ISO C 9x
1371 fflush_locked REMOVED
1372 ffsl NEW: GNU ext.
1373 ffsll NEW: GNU ext.
1374 fgetpos64 NEW: LFS
1375 fgets_unlocked NEW: GNU ext.
1376 fileno_locked REMOVED
1377 fma NEW: ISO C 9x
1378 fmaf NEW: ISO C 9x
1379 fmal NEW: ISO C 9x
1380 fmax NEW: ISO C 9x
1381 fmaxf NEW: ISO C 9x
1382 fmaxl NEW: ISO C 9x
1383 fmin NEW: ISO C 9x
1384 fminf NEW: ISO C 9x
1385 fminl NEW: ISO C 9x
1386 fmtmsg NEW: Unix98
1387 fopen64 NEW: LFS
1388 fputc_locked REMOVED
1389 fputs_unlocked NEW: GNU ext.
1390 fread_unlocked NEW: GNU ext.
1391 freopen64 NEW: LFS
1392 fseeko NEW: Unix98
1393 fsetpos64 NEW: LFS
1394 fstatfs64 NEW: LFS
1395 fstatvfs NEW: Unix98
1396 fstatvfs64 NEW: LFS
1397 ftello NEW: Unix98
1398 ftello64 NEW: LFS
1399 ftruncate64 NEW: LFS
1400 ftw64 NEW: LFS
1401 fwrite_unlocked NEW: GNU ext.
1402 gai_strerror NEW: IPv6
1403 gamma_r REMOVED
1404 gammaf_r REMOVED
1405 gammal_r REMOVED
1406 getchar_locked REMOVED
1407 getdate NEW: Unix98
1408 getdate_err NEW: Unix98
1409 getdate_r NEW: GNU ext.
1410 getmsg NEW: STREAMS
1411 getnameinfo NEW: IPv6
1412 getnetname NEW: Secure RPC
1413 getpmsg NEW: STREAMS
1414 getpt NEW: Unix98 PTY
1415 getrlimit64 NEW: LFS
1416 getutxent NEW: Unix98
1417 getutxid NEW: Unix98
1418 getutxline NEW: Unix98
1419 glob64 NEW: GNU ext.
1420 globfree64 NEW: GNU ext.
1421 gnu_get_libc_release NEW: GNU ext.
1422 gnu_get_libc_version NEW: GNU ext.
1423 grantpt NEW: Unix98 PTY
1424 host2netname NEW: Secure RPC
1425 iconv NEW: iconv
1426 iconv_close NEW: iconv
1427 iconv_open NEW: iconv
1428 if_freenameindex NEW: IPv6
1429 if_indextoname NEW: IPv6
1430 if_nameindex NEW: IPv6
1431 if_nametoindex NEW: IPv6
1432 in6addr_any NEW: IPv6
1433 in6addr_loopback NEW: IPv6
1434 inet6_isipv4mapped NEW: IPv6
1435 isastream NEW: STREAMS
1436 iswblank NEW: GNU ext.
1437 key_decryptsession NEW: Secure RPC
1438 key_decryptsession_pk NEW: Secure RPC
1439 key_encryptsession NEW: Secure RPC
1440 key_encryptsession_pk NEW: Secure RPC
1441 key_gendes NEW: Secure RPC
1442 key_get_conv NEW: Secure RPC
1443 key_secretkey_is_set NEW: Secure RPC
1444 key_setnet NEW: Secure RPC
1445 key_setsecret NEW: Secure RPC
1446 llrint NEW: ISO C 9x
1447 llrintf NEW: ISO C 9x
1448 llrintl NEW: ISO C 9x
1449 llround NEW: ISO C 9x
1450 llroundf NEW: ISO C 9x
1451 llroundl NEW: ISO C 9x
1452 log2 NEW: ISO C 9x
1453 log2f NEW: ISO C 9x
1454 log2l NEW: ISO C 9x
1455 lrint NEW: ISO C 9x
1456 lrintf NEW: ISO C 9x
1457 lrintl NEW: ISO C 9x
1458 lround NEW: ISO C 9x
1459 lroundf NEW: ISO C 9x
1460 lroundl NEW: ISO C 9x
1461 lseek64 NEW: LFS
1462 makecontext NEW: Unix98
1463 mempcpy NEW: GNU ext.
1464 mmap64 NEW: LFS
1465 moncontrol REMOVED
1466 modify_ldt NEW: kernel
1467 nan NEW: ISO C 9x
1468 nanf NEW: ISO C 9x
1469 nanl NEW: ISO C 9x
1470 nearbyint NEW: ISO C 9x
1471 nearbyintf NEW: ISO C 9x
1472 nearbyintl NEW: ISO C 9x
1473 netname2host NEW: Secure RPC
1474 netname2user NEW: Secure RPC
1475 nexttoward NEW: ISO C 9x
1476 nexttowardf NEW: ISO C 9x
1477 nexttowardl NEW: ISO C 9x
1478 nftw NEW: Unix98
1479 nftw64 NEW: LFS
1480 open64 NEW: LFS
1481 passwd2des NEW: Secure RPC
1482 pow10 NEW: GNU ext.
1483 pow10f NEW: GNU ext.
1484 pow10l NEW: GNU ext.
1485 pread NEW: Unix98
1486 pread64 NEW: LFS
1487 printf_size NEW: GNU ext.
1488 printf_size_info NEW: GNU ext.
1489 profil_counter REMOVED
1490 pthread_mutexattr_getkind_np REPLACED
1491 pthread_mutexattr_setkind_np REPLACED
1492 ptsname NEW: Unix98 PTY
1493 ptsname_r NEW: Unix98 PTY
1494 putc_locked REMOVED
1495 putchar_locked REMOVED
1496 putgrent NEW: GNU ext.
1497 putmsg NEW: STREAMS
1498 putpmsg NEW: STREAMS
1499 pututxline NEW: Unix98
1500 pwrite NEW: Unix98
1501 pwrite64 NEW: LFS
1502 readdir64 NEW: LFS
1503 readdir64_r NEW: LFS
1504 remquo NEW: ISO C 9x
1505 remquof NEW: ISO C 9x
1506 remquol NEW: ISO C 9x
1507 round NEW: ISO C 9x
1508 roundf NEW: ISO C 9x
1509 roundl NEW: ISO C 9x
1510 rtime NEW: GNU ext.
1511 scalbln NEW: ISO C 9x
1512 scalblnf NEW: ISO C 9x
1513 scalblnl NEW: ISO C 9x
1514 scandir64 NEW: LFS
1515 sendfile NEW: kernel
1516 setcontext NEW: Unix98
1517 setrlimit64 NEW: LFS
1518 setutxent NEW: Unix98
1519 sighold NEW: Unix98
1520 sigignore NEW: Unix98
1521 sigqueue NEW: POSIX.1b
1522 sigrelse NEW: Unix98
1523 sigset NEW: POSIX.1b
1524 sigtimedwait NEW: POSIX.1b
1525 sigwaitinfo NEW: POSIX.1b
1526 sincos NEW: GNU ext.
1527 sincosf NEW: GNU ext.
1528 sincosl NEW: GNU ext.
1529 statfs64 NEW: LFS
1530 statvfs NEW: Unix98
1531 statvfs64 NEW: LFS
1532 strcasestr NEW: GNU ext.
1533 strtoimax NEW: ISO C 9x
1534 strtoumax NEW: ISO C 9x
1535 strverscmp NEW: GNU ext.
1536 svcauthdes_stats NEW: Secure RPC
1537 svcunix_create NEW: sunrpc etx
1538 svcunixfd_create NEW: sunrpc ext
1539 swapcontext NEW: Unix98
1540 tcgetsid NEW: Unix98 PTY
1541 tdestroy NEW: GNU ext.
1542 tgamma NEW: ISO C 9x
1543 tgammaf NEW: ISO C 9x
1544 tgammal NEW: ISO C 9x
1545 tmpfile64 NEW: LFS
1546 trunc NEW: ISO C 9x
1547 truncate64 NEW: LFS
1548 truncf NEW: ISO C 9x
1549 truncl NEW: ISO C 9x
1550 umount2 NEW: kernel
1551 unlockpt NEW: Unix98 PTY
1552 updwtmpx NEW: Unix98
1553 user2netname NEW: Secure RPC
1554 utmpxname NEW: Unix98
1555 versionsort NEW: GNU ext.
1556 versionsort64 NEW: GNU ext.
1557 waitid NEW: Unix98
1558 wcscasecmp NEW: GNU ext.
1559 wcsncasecmp NEW: GNU ext.
1560 wcsnlen NEW: GNU ext.
1561 wcstoimax NEW: ISO C 9x
1562 wcstoll NEW: ISO C 9x
1563 wcstoull NEW: ISO C 9x
1564 wcstoumax NEW: ISO C 9x
1565 wcswcs NEW: Unix98
1566 wordexp NEW: POSIX.2
1567 wordfree NEW: POSIX.2
1568 write_profiling REMOVED
1569 xdecrypt NEW: Secure RPC
1570 xdr_authdes_cred NEW: Secure RPC
1571 xdr_authdes_verf NEW: Secure RPC
1572 xdr_cryptkeyarg NEW: Secure RPC
1573 xdr_cryptkeyarg2 NEW: Secure RPC
1574 xdr_cryptkeyres NEW: Secure RPC
1575 xdr_getcredres NEW: Secure RPC
1576 xdr_key_netstarg NEW: Secure RPC
1577 xdr_key_netstres NEW: Secure RPC
1578 xdr_keybuf NEW: Secure RPC
1579 xdr_keystatus NEW: Secure RPC
1580 xdr_netnamestr NEW: Secure RPC
1581 xdr_sizeof NEW: Secure RPC
1582 xdr_unixcred NEW: sunrpc ext
1583 xencrypt NEW: Secure RPC
1584 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1585 \f
1586 Version 2.0.6
1588 * more bug fixes
1590 \f
1591 Version 2.0.5
1593 * more bug fixes
1595 * inet_ntoa is thread-safe
1597 * updwtmp is moved from libutil to libc
1599 * rewrite of cbrt function
1601 * update of timezone data
1602 \f
1603 Version 2.0.4
1605 * more bug fixes
1606 \f
1607 Version 2.0.3
1609 * more bug fixes
1610 \f
1611 Version 2.0.2
1613 * more bug fixes
1615 * add atoll function
1617 * fix complex problems in Berkeley DB code
1619 * fix math functions
1620 \f
1621 Version 2.0.1
1623 * fixed lots of header problems (especially Linux/GNU specific)
1625 * dynamic loader preserves all registers
1627 * Roland McGrath provided support for handling of auxiliary objects in
1628 the ELF dynamic loader.
1630 * support for parallel builds is improved
1631 \f
1632 Version 2.0
1634 * GNU extensions are no longer declared by default. To enable them you
1635 must define the macro `_GNU_SOURCE' in your program or compile with
1636 `-D_GNU_SOURCE'.
1638 * The library has changed from using GNU ld symbol aliases to using weak
1639 symbols where available. The ELF object file format supports weak
1640 symbols; GNU ld also supports weak symbols in the a.out format. (There
1641 is also now support for other GNU ld extensions in ELF. Use the
1642 `--with-elf' option to configure to indicate you have ELF, and
1643 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1644 of many files which contained only symbol aliases, reducing the size of
1645 the source and the compiled library; many other files were renamed to
1646 less cryptic names previously occupied by the symbol alias files.
1647 There is a new header file <elf.h> for programs which operate on
1648 files in the ELF format.
1650 * Converted to Autoconf version 2, so `configure' has more options.
1651 Run `configure --help' to see the details.
1653 * The library can now be configured to build profiling, highly-optimized
1654 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1655 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1656 `configure' enable building these extra libraries. The shared library is
1657 built by default when using both ELF and GNU ld. When shared libraries
1658 are enabled, the new library `-ldl' is available for arbitrary run-time
1659 loading of shared objects; its interface is defined in <dlfcn.h>. The
1660 new header file <link.h> gives access to the internals of the run-time
1661 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1662 application of same name on other systems and it provides information
1663 about dynamically linked binaries.
1665 * The C library now provides the run-time support code for profiling
1666 executables compiled with `-pg'. Programs can control the profiling code
1667 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1668 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1669 the support for this file format was contributed by David Mosberger-Tang.
1671 * The math code has been replaced with a math library based on fdlibm from
1672 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1673 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1674 functions. The math functions now reside in a separate library, so
1675 programs using them will need to use `-lm' their linking commands.
1677 * John C. Bowman contributed optimized ix87 assembler inline functions.
1679 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1680 mechanism similar to that found in Solaris 2. This is now used for the
1681 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1682 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1683 file controls what services are used for each individual database. This
1684 works by loading shared libraries with names specified in `nsswitch.conf',
1685 so service modules can be changed or added at any time without even
1686 relinking any program. Currently there are the file, db, and NIS based
1687 NSS services available.
1689 * The new functions `strtoq' and `strtouq' parse integer values from
1690 strings, like `strtol' and `strtoul', but they return `long long int' and
1691 `unsigned long long int' values, respectively (64-bit quantities).
1693 * The new functions `strtof' and `strtold' parse floating-point values from
1694 strings, like `strtod', but they return `float' and `long double' values,
1695 respectively (on some machines `double' and `long double' are the same).
1697 * Ulrich Drepper has contributed new implementations of the floating-point
1698 printing and reading code used in the `printf' family of functions and
1699 `strtod', `strtof', and `strtold'. These new functions are perfectly
1700 accurate, and much faster than the old ones.
1702 * The implementation of the POSIX locale model was completely rewritten by
1703 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1704 to compile the POSIX locale definition.
1706 * The former dummy implementations of the strcoll and strxfrm function are
1707 now replaced by fully functional code contributed by Ulrich Drepper. The
1708 collation information comes from the POSIX locale definitions.
1710 * The new header <langinfo.h> defines an interface for accessing
1711 various locale-dependent data (using the locale chosen with `setlocale').
1713 * Ulrich Drepper has contributed a new suite of functions for operation on
1714 wide-character and multibyte-character strings, in <wchar.h>;
1715 and classification and case conversion of wide characters, in <wctype.h>.
1716 These new functions are conforming to the ISO C, Amendement 1 specification.
1718 * There is now a second implementation of the standard I/O library available.
1719 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1720 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1722 * You can now use positional parameter specifications in format strings
1723 for the `printf' and `scanf' families of functions. For example,
1724 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1725 ``Number 6, Mr Jones''. This is mainly useful when providing different
1726 format strings for different languages, whose grammars may dictate
1727 different orderings of the values being printed. To support this
1728 feature, the interface for `register_printf_handler' has changed; see
1729 the header file <printf.h> for details.
1731 * The `printf' and `scanf' families of functions now understand a new
1732 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1733 to group numbers as indicated by the locale; for `scanf' and friends, this
1734 says to accept as valid only a number with all the proper grouping
1735 separators in the right places. In the default "C" locale, numbers are
1736 not grouped; but locales for specific countries will define the usual
1737 conventions (i.e. separate thousands with `,' in the US locale).
1739 * The pgrp functions have been regularized, slightly incompatibly but much
1740 less confusingly. The core functions are now `getpgid' and `setpgid',
1741 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1742 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1743 provided for compatibility. There is no longer an incompatible `getpgrp'
1744 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1746 * The new header file <fts.h> and suite of functions simplify programs that
1747 operate on directory trees. This code comes from 4.4 BSD.
1749 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1750 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1751 NSS scheme used in glibc.
1753 * There is a new malloc debugging hook `__memalign_hook'.
1755 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1756 `unsigned int' in <sys/types.h>. These are for compatibility only and
1757 their use is discouraged.
1759 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1760 done differently, so that it works even without GNU ld.
1762 * New function `euidaccess' checks allowed access to a file like `access',
1763 but using the effective IDs instead of the real IDs.
1765 * The time zone data files have been updated for the latest and greatest
1766 local time conventions of the countries of the world.
1768 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1769 see <dirent.h>.
1771 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1772 for formatting floating-point numbers. They are provided only for
1773 compatibility; new programs should use `sprintf' instead. There are
1774 also equivalent function for the `long double' floating-point type and
1775 all functions also exist in a reentrant form.
1777 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1778 functions for maintaining the login-record files (primarily of use to
1779 system programs such as `login'), and convenient functions for
1780 allocating and initializing a pseudo-terminal (pty) device.
1782 * Ulrich Drepper has contributed new support for System V style
1783 shared memory and IPC on systems that support it.
1785 * Ulrich Drepper has contributed several miscellaneous new functions found
1786 in System V: The `hsearch' family of functions provide an effective
1787 implementation of hash tables; `a64l' and `l64a' provide a very simple
1788 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1789 number generator.
1791 * Ulrich Drepper has contributed new reentrant counterparts for the
1792 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1794 * Ulrich Drepper has contributed new, highly-optimized versions of several
1795 string functions for the i486/Pentium family of processors.
1797 * Ulrich Drepper has updated the Linux-specific code, based largely
1798 on work done in Hongjiu Lu's version of GNU libc for Linux.
1799 The GNU library now supports Linux versions 2.0.10 and later,
1800 using the ELF object file format (i[3456]86-*-linux).
1802 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1804 * David Mosberger-Tang and Richard Henderson have ported the C library
1805 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1806 dynamic linking support for ELF/Alpha.
1808 * Richard Henderson contributed several Alpha optimized assembler function
1809 for arithmetic and string handling.
1811 * Ulrich Drepper has contributed a new set of message catalog functions to
1812 support multiple languages using the <libintl.h> interface, for use with
1813 his new package GNU gettext. Translation volunteers have contributed
1814 catalogs of the library's messages in Spanish, German, and Korean.
1816 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1817 program and the `catgets' function for reading the catalog files it
1818 creates. (The <libintl.h> interface is preferred; we include the
1819 <nl_types.h> interface using `catgets' only for source compatibility with
1820 programs already written to use it.)
1822 * New header file <values.h> gives SVID-compatible names for <limits.h>
1823 constants.
1825 * Various new macros, declarations, and small header files for compatibility
1826 with 4.4 BSD.
1828 * New function `group_member' is a convenient way to check if a process has
1829 a given effective group ID.
1831 * When using GCC 2.7 and later, the socket functions are now declared in a
1832 special way so that passing an argument of type `struct sockaddr_in *',
1833 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1834 `struct sockaddr *' type, does not generate a type-clash warning.
1836 * New function `error' declared in header file <error.h> is a convenient
1837 function for printing error messages and optionally exiting; this is the
1838 canonical function used in GNU programs. The new functions `err', `warn',
1839 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1840 doing the same thing.
1842 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1843 POSIX.2 `glob' function to do ~ and {...} expansion.
1845 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1846 `clearenv' which is used in POSIX.9 is also available.
1848 * New function `getsid' returns session ID number on systems that support it.
1850 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1851 files <db.h> and <mpool.h> provide a rich set of functions for several
1852 types of simple databases stored in memory and in files, and <ndbm.h> is
1853 an old `ndbm'-compatible interface using the `db' functions. Link with
1854 `-ldb' to get these functions.
1856 * New macro `strdupa' copies a string like `strdup', but uses local stack
1857 space from `alloca' instead of dynamic heap space from `malloc'.
1859 * New function `strnlen' is like `strlen' but searches only a given maximum
1860 number of characters for the null terminator. `stpncpy', `strndup' and
1861 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1862 function.
1864 * New function `statfs' in header <sys/statfs.h>.
1866 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1867 provide convenient functions for operating on blocks of null-terminated
1868 strings.
1870 * A new suite of functions in <utmp.h> handle all the details of reading
1871 and writing the utmp file.
1873 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1874 Thorsten Kukuk.
1876 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1877 completely POSIX compliant and also implemented the extended functionality
1878 to handle alternate digit representation and alternate era date formats.
1880 * Ulrich Drepper provided an implementation of the `strptime' function
1881 defined in XPG4.2 which transforms a string into a `struct tm' value.
1883 * Paul Eggert provided the tzselect shell script as part of the timezone
1884 code. The shell script makes it easy to select the correct timezone
1885 specification.
1887 * The implementation of the malloc family of functions is completely replaced
1888 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1889 The implementation uses the mmap function (if available) and it is
1890 optimized for the use in multi threaded programs.
1892 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1893 functions. This new functionality is usable by specifying a special
1894 salt string and it is compatible with implementation on *BSD systems.
1896 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1897 `getsubopt' to handle second level command line options, `bsd_signal'
1898 to access BSD style `signal' functionality, the obsolete `regexp' style
1899 expression matcher.
1901 * the `lchown' function is available on system which support this
1902 functionality.
1904 * The implementation of the shadow password handling function was contributed
1905 by Ulrich Drepper.
1907 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1909 * POSIX.1g support was added. The <sys/select.h> header is available,
1910 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1911 implementation of `getaddrinfo'.
1912 \f
1913 Version 1.09
1915 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1917 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1918 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1920 * The new function `daemon' from 4.4 BSD is useful for server programs that
1921 want to put themselves in the background.
1923 * Joel Sherrill has contributed support for several standalone boards that
1924 run without an operating system.
1926 * `printf', `scanf' and friends now accept a `q' type modifier for long
1927 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1929 * All of the code taken from BSD (notably most of the math and networking
1930 routines) has been updated from the BSD 4.4-Lite release.
1932 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1934 * The new functions `getdomainname' and `setdomainname' fetch or change the
1935 YP/NIS domain name. These are system calls which exist on systems which
1936 have YP (aka NIS).
1938 * The time zone data files have been updated for the latest international
1939 conventions.
1941 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1942 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1943 \f
1944 Version 1.08
1946 * The C library now includes support for Sun RPC, from Sun's free
1947 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1948 are included. (There is still no support for YP.)
1950 * Tom Quinn has contributed a port of the C library to SGI machines running
1951 Irix 4 (mips-sgi-irix4).
1953 * The new `lockf' function is a simplified interface to the locking
1954 facilities of `fcntl', included for compatibility.
1956 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1958 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1960 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1961 compatibility.
1963 * The error message printed by `assert' for a failed assertion now includes
1964 the name of the program (if using GNU ld) and the name of the calling
1965 function (with versions of GCC that support this).
1967 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1969 * The library now includes the <sys/mman.h> header file and memory
1970 management functions `mmap', `munmap', `mprotect', `msync', and
1971 `madvise', on systems that support those facilities.
1973 * The interface for `mcheck' has changed slightly: the function called to
1974 abort the program when an allocation inconsistency is detected now takes
1975 an argument that indicates the type of failure. The new function
1976 `mprobe' lets you request a consistency check for a particular block at
1977 any time (checks are normally done only when you call `free' or `realloc'
1978 on a block).
1980 * It is now possible to easily cross-compile the C library, building on one
1981 system a library to run on another machine and/or operating system. All
1982 you need to do is set the variable `HOST_CC' in `configparms' to the
1983 native compiler for programs to run on the machine you are building on (a
1984 few generator programs are used on Unix systems); set `CC' to the
1985 cross-compiler.
1987 * The new function `fexecve' (only implemented on the GNU system) executes
1988 a program file given a file descriptor already open on the file.
1989 \f
1990 Version 1.07
1992 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1993 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1995 * You can set the variable `libprefix' in `configparms' to specify a prefix
1996 to be prepended to installed library files; this makes it easy to install
1997 the GNU C library to be linked as `-lgnuc' or whatever.
1999 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2000 copies a limited number of characters from a string, and returns the
2001 address of the last character written.
2003 * You no longer need to check for whether the installed `stddef.h' is
2004 compatible with the GNU C library. configure now checks for you.
2006 * You can now define a per-stream `fileno' function to convert the
2007 stream's cookie into an integral file descriptor.
2009 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2010 allocates zero bytes of storage, and returns a unique pointer which
2011 you can pass to `realloc' or `free'. The behavior is undefined if
2012 you dereference this pointer.
2014 * The C library now runs on Sony NEWS m68k machines running either
2015 NewsOS 3 or NewsOS 4.
2017 * The new `syscall' function is a system-dependent primitive function
2018 for invoking system calls. It has the canonical behavior on Unix
2019 systems, including unreliable return values for some calls (such as
2020 `pipe', `fork' and `getppid').
2022 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2023 to `EAGAIN', which is the preferred name. On systems whose kernels
2024 use two distinct codes, the C library now translates EWOULDBLOCK to
2025 EAGAIN in every system call function.
2026 \f
2027 Version 1.06
2029 * The GNU C Library Reference Manual is now distributed with the library.
2030 `make dvi' will produce a DVI file of the printed manual.
2031 `make info' will produce Info files that you can read on line using C-h i
2032 in Emacs or the `info' program.
2033 Please send comments on the manual to bug-glibc-manual@gnu.org.
2035 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2037 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2039 * Jason Merrill has contributed a port to the Sequent Symmetry running
2040 Dynix version 3 (i386-sequent-dynix).
2042 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2043 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2045 * New function `memory_warnings' lets you arrange to get warnings when
2046 malloc is running out of memory to allocate, like Emacs gives you.
2048 * The C library now contains the relocating allocator used in Emacs 19 for
2049 its editing buffers. This allocator (ralloc) minimizes allocation
2050 overhead and fragmentation by moving allocated regions around whenever it
2051 needs to. You always refer to a ralloc'd region with a "handle" (a
2052 pointer to a pointer--an object of type `void **').
2054 * There is a new `printf' format: `%m' gives you the string corresponding
2055 to the error code in `errno'.
2057 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2058 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2059 pass, the `a' modifier says to fill in a `char **' you pass with a
2060 malloc'd string.
2062 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2063 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2064 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2066 * `mkstemp' is a traditional Unix function to atomically create and open a
2067 uniquely-named temporary file.
2068 \f
2069 Version 1.05
2071 * The standard location for the file that says what the local timezone is
2072 has changed again. It is now `/usr/local/etc/localtime' (or more
2073 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2075 * The distribution no longer contains any files with names longer than 14
2076 characters.
2078 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2079 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2081 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2082 \f
2083 Version 1.04
2085 * The configuration process has changed quite a bit. The `configure'
2086 script is now used just like the configuration scripts for other GNU
2087 packages. The `sysdeps' directory hierarchy is much rearranged.
2088 The file `INSTALL' explains the new scheme in detail.
2090 * The header files no longer need to be processed into ANSI C and
2091 traditional C versions. There is just one set of files to install, and
2092 it will work with ANSI or old C compilers (including `gcc -traditional').
2094 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2095 MIPS DECStation running Ultrix 4.
2097 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2098 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2099 made itself into a shared library.
2101 * Yet further improved support for the i386, running 4.3 BSD-like systems
2102 (such as Mach 3 with the Unix single-server), or System V.
2104 * New function `strncasecmp' to do case-insensitive string comparison
2105 with limited length.
2107 * New function `strsep' is a reentrant alternative to `strtok'.
2109 * New functions `scandir' and `alphasort' for searching directories.
2111 * New function `setenv' is a better interface to `putenv'.
2113 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2114 function for traversing a directory tree.
2116 * The GNU obstack package is now also part of the C library.
2117 The new function `open_obstack_stream' creates a stdio stream that
2118 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2119 formatted output directly to an obstack.
2121 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2122 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2124 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2126 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2127 things to your strings.
2129 * There are some new test programs: test-fseek, testmb, and testrand.
2131 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2132 These ports are not finished, but are a good starting place for really
2133 supporting those systems.
2135 * `/etc/localtime' is now the standard location for the file that says what
2136 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2137 This follows the general principle that `/etc' is the place for all local
2138 configuration files.
2140 * The C library header files now use `extern "C"' when used by the C++
2141 compiler, so the C library should now work with C++ code.
2143 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2144 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2145 in <strings.h>.)
2147 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2148 function which uses the `merge sort' algorithm, and is said to be
2149 significantly faster than the old GNU `qsort' function. Merge sort is
2150 now the standard `qsort' function. The new algorithm can require a lot
2151 of temporary storage; so, the old sorting function is called when the
2152 required storage is not available.
2154 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2155 provides the Unix `crypt' function, plus some other entry points.
2157 * The code and header files taken from 4.4 BSD have been updated with the
2158 latest files released from Berkeley.
2159 \f
2160 ----------------------------------------------------------------------
2161 Copyright information:
2163 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2165 Permission is granted to anyone to make or distribute verbatim copies
2166 of this document as received, in any medium, provided that the
2167 copyright notice and this permission notice are preserved,
2168 thus giving the recipient permission to redistribute in turn.
2170 Permission is granted to distribute modified versions
2171 of this document, or of portions of it,
2172 under the above conditions, provided also that they
2173 carry prominent notices stating who last changed them.
2174 \f
2175 Local variables:
2176 version-control: never
2177 fill-column: 76
2178 End: