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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://sourceware.org/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, 6677, 6778, 6808,
13 9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
14 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
15 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
16 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
17 14173, 14195, 14197, 14237, 14251, 14252, 14283, 14298, 14303, 14307,
18 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417, 14447,
19 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519, 14530,
20 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576, 14579,
21 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648, 14652,
22 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743, 14767,
23 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805, 14807,
24 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835, 14838,
25 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14879, 14889, 14893,
26 14898, 14914.
28 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
29 EMFILE has been fixed (Bugzilla #14889).
31 * The add-on ports collection is now distributed in the "ports" subdirectory
32 of the main GNU C Library distribution, rather than separately.
34 * Port to ARM AArch64 contributed by Linaro.
36 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
37 Optimized versions of memcpy, memset, and memcmp added for System z10 and
38 zEnterprise z196.
39 Implemented by Andreas Krebbel.
41 * The new function secure_getenv allows secure access to the environment,
42 returning NULL if running in a SUID/SGID process. This function replaces
43 the internal function __secure_getenv.
45 * SystemTap static probes have been added into the dynamic linker.
46 Implemented by Gary Benson.
48 * Optimizations of string functions strstr, strcasestr and memmem.
49 Implemented by Maxim Kuvyrkov.
51 * The minimum Linux kernel version that this version of the GNU C Library
52 can be used with is 2.6.16.
54 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
55 powerpc POWER7. Implemented by Will Schmidt.
57 * New configure option --disable-nscd builds the C library such that it
58 never attempts to contact the Name Service Caching Daemon (nscd).
59 New configure option --disable-build-nscd avoids building nscd itself;
60 this is the default if --disable-nscd is used.
62 * Improved support for cross-compilation, including cross-testing and
63 bootstrap builds without a previously built glibc.
65 * New configure options --with-bugurl and --with-pkgversion, for
66 distributors to use to embed their bug-reporting and package version
67 information in --help and --version output.
69 * The ttyname and ttyname_r functions on Linux now fall back to searching for
70 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
71 allows creation of chroots without the procfs mounted on /proc.
73 * The `crypt' function now fails if passed salt bytes that violate the
74 specification for those values. On Linux, the `crypt' function will
75 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
76 enabled, and fail on encrypted strings using the MD5 or DES algorithm
77 when the mode is enabled.
79 * The `clock_*' suite of functions (declared in <time.h>) is now available
80 directly in the main C library. Previously it was necessary to link with
81 -lrt to use these functions. This change has the effect that a
82 single-threaded program that uses a function such as `clock_gettime' (and
83 is not linked with -lrt) will no longer implicitly load the pthreads
84 library at runtime and so will not suffer the overheads associated with
85 multi-thread support in other code such as the C++ runtime library.
87 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
88 sat_IN, and szl_PL.
89 \f
90 Version 2.16
92 * The following bugs are resolved with this release:
94 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
95 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
96 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
97 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
98 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
99 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
100 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
101 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
102 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
103 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
104 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
105 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
106 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
107 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
108 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
109 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
110 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
111 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
112 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
113 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
114 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
115 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
116 14278.
118 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
119 configuring glibc with:
120 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
121 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
122 Implemented by H.J. Lu.
124 * ISO C11 support:
126 + define static_assert
128 + do not declare gets
130 + declare at_quick_exit and quick_exit also for ISO C11
132 + aligned_alloc. NB: The code is deliberately allows the size parameter
133 to not be a multiple of the alignment. This is a moronic requirement
134 in the standard but it is only a requirement on the caller, not the
135 implementation.
137 + timespec_get added
139 + uchar.h support added
141 + CMPLX, CMPLXF, CMPLXL added
143 Implemented by Ulrich Drepper.
145 * Support for the IA-64 has been moved to ports.
147 * Remove support for anything but ELF binary format
149 * Checking versions of poll, ppoll added.
150 Implemented by Ulrich Drepper.
152 * More generic and 64-bit performance optimizations to math functions.
153 Implemented by Ulrich Drepper.
155 * New configure option --enable-obsolete-rpc makes the deprecated RPC
156 headers and functions available at compile time as they were before
157 version 2.14. This option will be removed at some time in the future
158 after the TI-RPC library becomes fully sufficient for the needs of
159 existing applications.
161 * Compatibility code for Linux kernel versions before 2.4 has been removed.
162 Note that glibc is not expected to work with any Linux kernel version
163 before 2.6.
165 * New header <sys/auxv.h> and function getauxval allowing easy access to
166 the AT_* key-value pairs passed from the Linux kernel. The header also
167 defines the HWCAP_* bits associated with the AT_HWCAP key.
169 * New locales: mag_IN
171 * New configure option --enable-systemtap builds SystemTap static probes
172 into libc for setjmp and longjmp and into libpthread for various operations.
173 So far the setjmp/longjmp probes and some of the libpthread probes are
174 provided only for i*86 and x86_64.
175 Implemented by Roland McGrath and Rayson Ho.
177 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
179 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
180 and Will Schmidt.
182 * More optimized functions for SPARC. Implemented by David S. Miller.
184 * Improved support for cross-compilation, especially bootstrap builds
185 without a previously built glibc.
187 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
188 Chris Metcalf from Tilera.
190 * Support for the old ARM ABI has been removed from ports. Only the EABI is
191 now supported for ARM processors.
193 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
194 as the name of the dynamic linker, to distinguish it from the
195 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
197 * Support for CRIS has been removed from ports.
199 * A new class of installed header has been documented for low-level
200 platform-specific functionality. PowerPC added the first instance with a
201 function to provide time base register access. Contributed by Tulio
202 Magno Quites Machado Filho.
204 * ix86 configurations now install header files that are consistent with
205 what x86-64 configurations install. These same header files can be used
206 for -m32, -m64, or -mx32 builds.
207 Contributed by H.J. Lu.
209 * Math library bug fixes. A thorough audit of all open math library bugs was
210 conducted by Joseph Myers. Significant progress was made on many math
211 library bugs resulting in more accurate exceptions and function results.
212 Many thanks to all those that contributed including Andreas Jaeger for his
213 patch review and work on the x87 trigonometric instruction issues.
215 * Timezone data is no longer installed. Timezone-related binaries and scripts
216 will continue to be installed. Users should obtain their timezone data from
217 their distribution provider or from the tzdata package at
218 <ftp://munnari.oz.au/pub/>.
219 \f
220 Version 2.15
222 * The following bugs are resolved with this release:
224 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
225 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
226 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
227 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
228 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
229 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
230 13484, 13506, 13515, 13523, 13524, 13538, 13540
232 * New program pldd to list loaded object of a process
233 Implemented by Ulrich Drepper.
235 * Add nss_db support back to glibc. No more dependency on Berkeley db
236 and support for initgroups lookups.
237 Implemented by Ulrich Drepper.
239 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
240 Contributed by HJ Lu.
242 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
243 Contributed by HJ Lu.
245 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
246 on x86-32 and x86-64.
247 Contributed by Liubov Dmitrieva.
249 * Optimized strchr and strrchr for SSE on x86-32.
250 Contributed by Liubov Dmitrieva.
252 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
253 for x86-64 and x86-32.
254 Contributed by Liubov Dmitrieva.
256 * New interfaces: scandirat, scandirat64
257 Implemented by Ulrich Drepper.
259 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
260 Implemented by Ulrich Drepper.
262 * nscd now also caches the netgroup database.
263 Implemented by Ulrich Drepper.
265 * Integrate libm with gcc's -ffinite-math-only option.
266 Implemented by Ulrich Drepper.
268 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
269 to math functions. Implemented by Ulrich Drepper.
271 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
272 Implemented by Ulrich Drepper.
274 * New Linux interfaces: process_vm_readv, process_vm_writev
276 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
277 Implemented by Ulrich Drepper.
279 * Optimized nearbyint and strcasecmp for PPC.
280 Implemented by Adhemerval Zanella.
282 * New locales: bho_IN, unm_US, es_CU, ta_LK
283 \f
284 Version 2.14
286 * The following bugs are resolved with this release:
288 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
289 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
290 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
291 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
292 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
293 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
294 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
295 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
296 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
297 12795, 12811, 12813, 12814, 12841
299 * The RPC implementation in libc is obsoleted. Old programs keep working
300 but new programs cannot be linked with the routines in libc anymore.
301 Programs in need of RPC functionality must be linked against TI-RPC.
302 The TI-RPC implementation is IPv6 enabled and there are other benefits.
304 Visible changes of this change include (obviously) the inability to link
305 programs using RPC functions without referencing the TI-RPC library and the
306 removal of the RPC headers from the glibc headers.
307 Implemented by Ulrich Drepper.
309 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
310 syncfs, setns, sendmmsg
312 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
313 yue_HK, lij_IT, mhr_RU
315 * New encodings: CP770, CP771, CP772, CP773, CP774
317 * New program sotruss to trace calls through PLTs
318 Implemented by Ulrich Drepper.
320 * The malloc hook implementation is marked deprecated and will be removed
321 from the default implementation in the next version. The design never
322 worked ever since the introduction of threads. Even programs which do
323 not create threads themselves can use multiple threads created internally.
324 \f
325 Version 2.13
327 * The following bugs are resolved with this release:
329 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
330 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
331 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
332 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
333 12378, 12394, 12397
335 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
337 * POWER7 optimizations: memset, memcmp, strncmp
339 * New optimized string functions for x86-64: strnlen (SSE2),
340 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
341 Implemented by Ulrich Drepper.
342 \f
343 Version 2.12
345 * The following bugs are resolved with this release:
347 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
348 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
349 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
350 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
351 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
352 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
353 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
354 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
356 * New interfaces: pthread_getname_np, pthread_setname_np
358 * New Linux interface: recvmmsg
360 * STT_GNU_IFUNC implemented for Sparc by David Miller.
362 * The dynamic linker now recognizes supported ABI versions from the
363 EI_ABIVERSION field in the ELF header.
364 Implemented by Ulrich Drepper.
366 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
367 will not be used to fill in password fields in the passwd.byname replies.
368 Instead it is used to synthesize the shadow.byname table, should it be
369 missing. This is a useful mode in some installations involving Solaris.
370 Implemented by Ulrich Drepper.
372 * New locales: kok_IN, sq_MK, cv_RU
373 \f
374 Version 2.11
376 * The following bugs are resolved with this release:
378 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
379 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
380 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
381 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
382 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
383 10789, 10817, 10823, 10840, 10847
385 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
386 mkostemps64
387 Implemented by Ulrich Drepper.
389 * Checking version of longjmp added that fails if an uninitialized stack
390 frame would be created. Implemented by Ulrich Drepper.
392 * STT_GNU_IFUNC is now supported in static executables.
393 Implemented by H.J. Lu.
395 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
397 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
398 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
399 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
400 Contributed by H.J. Lu.
402 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
403 Implemented by Ulrich Drepper.
405 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
406 strstr, strcasestr.
407 Contributed by H.J. Lu.
409 * Support for fma instruction in AVX on x86-64.
410 Implemented by H.J. Lu and Ulrich Drepper.
412 * AVX support in x86-64 auditing support in ld.so.
413 Implemented by H.J. Lu.
415 * STB_GNU_UNIQUE support added.
416 Implemented by Ulrich Drepper.
418 * Implement second fallback mode for optimized DNS lookup for even more
419 broken environments. If two requests from the same port are not
420 handled correctly close the socket and open a new one before sending
421 the second request. The 'single-request-reopen' option in /etc/resolv.conf
422 can be used to select this mode right away, instead of rediscovering the
423 necessity is every process again.
424 Implemented by Ulrich Drepper.
426 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
427 Implemented by Adam Tkac.
429 * Optimized iconv conversions for S390x.
430 Implemented by Andreas Krebbel.
432 * Using condvars with PI mutexes is now more efficient due to kernel
433 support for requeueing to PI futexes. NPTL support added for x86-64.
434 Implemented by Ulrich Drepper.
436 * New locales: ps_AF, my_MM
437 \f
438 Version 2.10
440 * The following bugs are resolved with this release:
442 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
443 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
444 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
445 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
446 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
448 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
449 Implemented by Ulrich Drepper.
451 * New Linux interfaces: accept4, fallocate, fallocate64.
452 Implemented by Ulrich Drepper.
454 * Correct declarations of string function when used in C++ code. This
455 could lead to compile errors for invalid C++ code.
457 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
458 now in POSIX.
460 * New POSIX 2008 interface: psiginfo
461 Implemented by Ulrich Drepper.
463 * New ISO C++1x interfaces: quick_exit, at_quick_exit
464 Implemented by Ulrich Drepper.
466 * Support for selecting between multiple function definitions at runtime
467 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
469 * The libcrypt library can now use the hash function implementations in
470 NSS. Implemented by Ulrich Drepper.
472 * The malloc implementation can be compiled to be less memory efficient
473 but higher performing in multi-threaded programs.
474 Implemented by Ulrich Drepper.
476 * New locales: nan_TW@latin, ks_IN
478 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
479 Implemented by Ulrich Drepper.
481 * Extended printf hook support. It is possible to use user-defined types
482 and extend existing format specifiers.
483 Implemented by Ulrich Drepper.
485 * Handling for group shadow files has been added.
486 Implemented by Ulrich Drepper.
488 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
489 servers (the case, e.g., for some people using the built-in DNS
490 server in ADSL modems/routers). There is a once-per-process timeout
491 in case of a broken server. To avoid it, users can run nscd or put
492 'options single-request' in /etc/resolv.conf.
493 Implemented by Ulrich Drepper.
494 \f
495 Version 2.9
497 * The following bugs are resolved with this release:
499 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
500 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
501 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
502 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
503 6968, 6974, 6980, 6995, 7008, 7009, 7029
505 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
506 up at the same time. Implemented by Ulrich Drepper.
508 * TLS descriptors for LD and GD on x86 and x86-64.
509 Implemented by Alexandre Oliva.
511 * getaddrinfo now handles DCCP and UDPlite.
512 Implemented by Ulrich Drepper.
514 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
515 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
516 Implemented by Ulrich Drepper.
518 * New implementation of memmem, strstr, and strcasestr which is O(n).
519 Implemented by Eric Blake.
521 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
523 * Implement "e" option for popen to open file descriptor with the
524 close-on-exec flag set. Implemented by Ulrich Drepper.
526 * Implement "b" mode for fmemopen. In this mode writes writes don't
527 implicitly add a NUL byte and seeks from the end of the buffer really
528 use the buffer end, not the string length as the basis.
529 Implemented by Ulrich Drepper.
531 * Many functions, exported and internal, now atomically set the close-on-exec
532 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
534 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
535 Sinhala)
536 Implemented by Pravin Satpute.
538 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
539 \f
540 Version 2.8
542 * The following bugs are resolved with this release:
544 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
545 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
546 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
547 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
548 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
549 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
550 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
552 * New locales: bo_CN, bo_IN, shs_CA.
554 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
556 * Sorting rules for some Indian languages (Devanagari and Gujarati).
557 Implemented by Pravin Satpute.
559 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
561 * nscd caches now all timeouts for DNS entries
562 Implemented by Ulrich Drepper.
564 * nscd is more efficient and wakes up less often.
565 Implemented by Ulrich Drepper.
567 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
568 vdprintf, and obstack_vprintf.
569 Implemented by Jakub Jelinek.
571 * Faster memset for x86-64.
572 Implemented by Harsha Jagasia and H.J. Lu.
574 * Faster memcpy on x86.
575 Implemented by Ulrich Drepper.
577 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
578 Implemented by Ulrich Drepper.
580 * Faster sqrt and sqrtf implemention for some PPC variants.
581 Implemented by Steven Munroe.
582 \f
583 Version 2.7
585 * The following bugs are resolved with this release:
587 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
588 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
589 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
590 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
591 5071, 5103, 5104, 5112, 5113, 5184, 5186
593 * More checking functions: fread, fread_unlocked, open*, mq_open.
594 Implemented by Jakub Jelinek and Ulrich Drepper.
596 * Extend fortification to C++. Implemented by Jakub Jelinek.
598 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
599 by not recognizing 'a' as a modifier when those specs are requested.
600 Implemented by Jakub Jelinek.
602 * PPC optimizations to math and string functions.
603 Implemented by Steven Munroe.
605 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
606 options to be passed. Implemented by Ulrich Drepper.
608 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
610 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
611 Implemented by Ulrich Drepper.
613 * Handle private futexes in the NPTL implementation.
614 Implemented by Jakub Jelinek and Ulrich Drepper.
616 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
617 Implemented by Roland McGrath and Ulrich Drepper.
619 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
621 * SHA-256 and SHA-512 based password encryption.
622 Implemented by Ulrich Drepper.
624 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
625 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
626 yo_NG.
628 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
629 Implemented by Ulrich Drepper.
630 \f
631 Version 2.6
633 * The following bugs are resolved with this release:
635 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
636 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
637 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
638 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
639 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
640 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
641 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
642 4702, 4858
644 * New Linux interfaces: epoll_pwait, sched_getcpu.
646 * New generic interfaces: strerror_l.
648 * nscd can now cache the services database. Implemented by Ulrich Drepper.
649 \f
650 Version 2.5
652 * The following bugs are resolved with this release:
654 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
655 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
656 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
657 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
658 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
659 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
660 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
661 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
662 3225, 3251, 3252, 3253, 3273
664 * For Linux, the sorting of addresses returned by getaddrinfo now also
665 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
666 Implemented by Ulrich Drepper.
668 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
669 Implemented by Ulrich Drepper.
671 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
673 * New iconv module for MIK. Contributed by Alexander Shopov.
675 * For sites with broken group and/or passwd database, the auto-propagate
676 option of nscd can prevent creating ID lookup entries from the results
677 of a name lookup and vice versa. This usually is no problem but some
678 site might have problems with the default behavior.
679 Implemented by Ulrich Drepper.
681 * Iterating over entire database in NIS can be slow. With the
682 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
683 to trade time for memory. The entire database will be read at once.
684 Implemented by Ulrich Drepper.
686 * The interfaces introduced in RFC 3542 have been implemented by
687 Ulrich Drepper.
689 * Support for the new ELF hash table format was added by Ulrich Drepper.
691 * Support for priority inheritance mutexes added by Jakub Jelinek and
692 Ulrich Drepper.
694 * Support for priority protected mutexes added by Jakub Jelinek.
696 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
697 or_IN, csb_PL, fy_NL, sr_ME.
698 \f
699 Version 2.4
701 * More overflow detection functions.
703 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
704 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
706 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
707 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
708 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
709 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
710 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
711 by Masahide Washizawa.
713 * It is now possible to install audit libraries for the dynamic linker using
714 LD_AUDIT. Implemented by Ulrich Drepper.
716 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
717 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
718 For a libc and libpthread that works well on Linux 2.4 kernels, we
719 recommend using the stable 2.3 branch.
721 * The new function open_wmemstream acts like open_memstream,
722 but uses a wchar_t wide character buffer.
724 * The new function ppoll is an improved version of poll, similar to pselect.
726 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
727 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
728 renameat, unlinkat, linkat, symlinkat, readlinkat.
730 * New Linux kernel system calls: unshare,
731 inotify_init, inotify_add_watch, inotify_rm_watch.
733 * The euidaccess function is now also known by the alias eaccess,
734 for compatibility with some other systems.
736 * Timezone data updated to 2006b version.
737 \f
738 Version 2.3.6
740 * The following bugs are resolved with this release:
742 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
743 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
744 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
745 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
746 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
747 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
749 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
751 * As of this release, GCC 4 can be used to compile the C Library.
753 * Timezone data updated to 2005m version.
754 \f
755 Version 2.3.5
757 * The following bugs are resolved with this release:
759 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
760 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
761 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
762 777, 787, 821, 822, 823, 825
764 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
765 \f
766 Version 2.3.4
768 * Support for RFC 3678. Real implementations exist only for Linux so far.
769 Implemented by Ulrich Drepper.
771 * nscd can now cache entries persistently. Expiring entries are reloaded.
772 For speedups the cache can be shared in memory with client processes.
773 Implemented by Ulrich Drepper.
775 * nscd can now perform SELinux checks.
776 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
778 * getaddrinfo queries are now cached. Canonical name lookup is performed
779 efficiently.
780 Implemented by Ulrich Drepper.
782 * The nothrow function attribute is used when headers are used by gcc when
783 compiling C code. This can avoid significant amounts of exception
784 handling data.
786 * The malloc functions perform more error checking and are stricter when
787 it comes to reacting on errors. The default action is to terminate
788 the process after showing an error message. Implemented by Ulrich Drepper.
790 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
791 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
793 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
794 namespaces using the new function dlmopen(). This feature is of course,
795 like most other dynamic loading functionality, not available in statically
796 linked applications. Implemented by Ulrich Drepper.
798 * Low-overhead boundary checking variants of string and some stdio functions
799 were added. These are to be used in conjunction with a gcc patch by
800 Jakub Jelinek which adds calls to these functions if possible.
801 Implemented by Jakub Jelinek and Ulrich Drepper.
803 * Old code for several operating systems and machine architectures that
804 have not been in working condition in a long time have been removed from
805 the main source tree maintained by the GNU C Library's maintainers.
806 These files are now reside in the separate `ports' source module
807 that is usable as an add-on when building the library.
808 \f
809 Version 2.3.3
811 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
812 interrogate the dynamic linker, compatible with the Solaris interface.
814 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
815 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
817 * getifaddrs now uses the netlink interface on Linux to get its information.
818 Implemented by Thorsten Kukuk.
820 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
821 Implemented by Ulrich Drepper.
823 * support for non-executable stacks on x86 has been added. Changes mostly
824 by Roland McGrath.
826 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
827 and Ulrich Drepper.
829 * getaddrinfo now performs destination address selection according to
830 RFC 3484.
831 \f
832 Version 2.3.2
834 * Thread-safe interfaces for many functions that access locale data
835 were added in version 2.3, but these features were omitted from NEWS.
836 Many functions have variants with an `_l' suffix that take a `locale_t'
837 object as a parameter rather than consulting the current locale.
838 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
839 create and maintain `locale_t' objects. Additionally, the new function
840 `uselocale' sets "the current locale" (as used by functions not so
841 parameterized) set for an individual thread. These features were added
842 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
844 * The functions getresuid, getresgid, setresuid, and setresgid, which
845 have long been available on Linux, are now declared in <unistd.h>
846 and are now also available on the Hurd.
848 * ELF thread-local storage support (TLS) now works on x86-64.
850 * The new dynamic string token $LIB is expanded in shared library names.
851 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
853 * Aldy Hernandez contributed complete software floating point support for
854 PowerPC machines with no FPU.
856 * fexecve is implemented on Linux.
858 * The `btowc' function should work at least twice as fast due to
859 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
861 * With approriate thread add-ons cancelable functions are now implemented
862 in libc.so as well. No need to call the function in libpthread. This
863 change allowed to finally disable the incorrect and expensive handling
864 of weak definition in ld.so.
866 * Yet more PLT entries in libc.so have been removed. We finally arrived
867 at the bare minimum. Startup times improved appropriately.
869 * Support for the new Linux/x86 system call interface was added. The
870 AT_SYSINFO auxiliary vector entry is recognized and handled.
871 \f
872 Version 2.3
874 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
875 charsets.
877 * iconv (the program and the interface) now accepts empty names (excluding
878 options like //TRANSLIT) to mean "use charset of current locale".
880 * localedef can now transliterate characters in strings which are not in
881 the provided charmap. The information from the input locale is used.
883 * Prelinking support was added for ELF targets. This requires additional
884 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
886 * Read-only stdio streams now use mmap to speed up operation by eliminating
887 copying and buffer underflows. To use add 'm' to the mode string of
888 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
890 * The malloc functions were completely rewritten by Wolfram Gloger based
891 on Doug Lea's malloc-2.7.0.c.
893 * Isamu Hasegawa contributed a completely new and POSIX-conformant
894 implementation of regex.
896 * Bruno Haible upgraded the iconv and locale implementation to support
897 Unicode 3.2.
899 * Contents of the LC_* and LANG environment variables in the CEN style are
900 not recognized anymore. It never was used. Change by Ulrich Drepper.
902 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
903 thread-local storage (TLS) ABI on some platforms.
904 Changes by Ulrich Drepper. SH support by Kaz Kojima.
906 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
907 EUC-JISX0213, and TSCII.
909 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
910 BSD-compatible interface for getting all network interface addresses.
911 Implementation for IPv4 by Roland McGrath.
913 * Loading of locale data is faster due to the introduction of a locale
914 archive. Implemented by Roland McGrath and Ulrich Drepper.
916 * Startup times are significantly reduced by not using exported functions
917 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
918 and Ulrich Drepper.
920 * Steven Munroe contributed a port to PowerPC64/Linux.
921 \f
922 Version 2.2.6
924 * The Hurd now uses the GNU libio implementation of stdio rather than the
925 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
927 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
928 with the same behavior as the Linux system call of the same name.
929 \f
930 Version 2.2.5
932 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
933 128-bit long double format.
935 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
936 IBM1161, and IBM1162 charsets.
938 * Andreas Jaeger contributed a port to x86-64/Linux.
940 * Peter Bruin contributed a port to PowerPC/Hurd.
942 * libc functions using I/O streams now can handle wide-oriented streams
943 as well.
945 * optimizations in the dynamic linker. Binaries created by recent binutils
946 versions start up quicker due to reduced time spent on relocations.
948 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
949 \f
950 Version 2.2.4
952 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
953 asinh, atanh, j0 for the 128-bit long double format.
955 * Bruno Haible updated all the code handling Unicode in some form to
956 support Unicode 3.1.
958 * Speed of regex for single-byte locales is back to previous levels.
959 Patch by Isamu Hasegawa.
961 * Alpha, SPARC, and IA-64 now also using floating stacks.
963 * Startup time of internationalized applications greatly improved through
964 iconv cache. Use iconvconfig to generate the cache file.
965 Contributed by Ulrich Drepper.
967 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
968 severe performance problems. Patch by David Mosberger.
970 * The Hurd port got a lot more functionality like AIO, various stdio
971 extensions, etc. Mainly done by Roland McGrath.
973 * mtrace can now lookup symbols in shared libraries.
974 \f
975 Version 2.2.3
977 * Intel's IA-64 math library is largely integrated. It provides fast and
978 accurate implementatations for most basic and standard math functions
979 in float, double, and long double format.
981 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
982 and asin for the 96-bit long double format and asin, log, tan for the
983 128-bit long double format.
985 * The beginning of a last-bit accurate math library by IBM Haifa were added.
986 The basic double functions exist today. Contributed by Abraham Ziv
987 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
988 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
990 * An asynchronous name lookup library was added. The interface is designed
991 after POSIX AIO. The proposal was circulated beforehand to get comments.
992 No negative ones came in. Implemented by Ulrich Drepper.
994 * Port to S390/64bit contributed by Martin Schwidefsky
995 <schwidefsky@de.ibm.com>.
997 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
998 of functions for Linux/IA-64.
1000 * The RPC code is now thread safe. Threads can now use the same service
1001 of different services at the same time. Patch by Eric Norum
1002 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1004 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1005 family of functions for Linux/S390.
1007 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1008 of functions for Linux/x86.
1010 * Port to Linux/CRIS contributed by Axis Communications.
1011 \f
1012 Version 2.2.2
1014 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1015 we can now check for namespace violations and missing declarations. The
1016 result is that almost all headers are now Unix-compliant (as defined in
1017 the upcoming XPG6). The negative side is that some programs might need
1018 corrections, too, if they depend on the incorrect form of the headers in
1019 previous versions which defined too many symbols and included too many
1020 other headers.
1022 * regex now handles multibyte character sets correctly.
1023 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1025 * iconv (the program) does now conform to the upcoming XPG6 and handles
1026 charmaps. Instead of the charset names the path of charmaps can be
1027 provided and the conversion happens based on this data.
1028 Contributed by Ulrich Drepper.
1030 * The locale program now provides detailed information about the installed
1031 locales. While
1033 locale -a
1035 only lists the names of the supported locales
1037 locale -a --verbose
1039 provides details such as country, language, and codeset name.
1040 Contributed by Ulrich Drepper.
1041 \f
1042 Version 2.2.1
1044 * The gencat program now parses the input file according to the charset
1045 selected by the LC_CTYPE category. This is important for stateful
1046 character sets. To make generating catalogs easier there is a way
1047 to overwrite the charset selected by the locale: before the first
1048 message or $ quote line the catalog can contain a line like
1050 $ codeset=ISO-8859-2
1052 to select the charset (ISO-8859-2 in this case).
1054 Implemented by Shinya Hanataka and Ulrich Drepper.
1056 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1057 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1058 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1060 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1061 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1063 * The LANGUAGE environment variable is now ignored unless the locale is
1064 changed from the default "C" locale.
1066 * The usual bug fixes.
1067 \f
1068 Version 2.2
1070 * Greg McGary added runtime support for bounds checking using gcc's
1071 new -fbounded-pointers option. ix86 target is complete. PowerPC
1072 is in progress.
1074 * Thorsten Kukuk added secure mode support to nscd.
1076 * The Berkeley db libraries have been removed.
1078 Related, the nss_db module is now in a separate package since it
1079 obviously requires a database library being available.
1081 * Wide character I/O streams implemented by Ulrich Drepper.
1083 * Functions from the extended socket API added by Ulrich Drepper.
1085 * Functions feenableexcept and fedisableexcept to control the
1086 behaviour of individual exceptions have been added by Andreas Jaeger.
1088 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1090 * The resolver code has been updated from bind 8.2.3-T5B which supports
1091 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1092 and Mark Kettenis.
1094 This change could in some situations effect backward compatibility. Since
1095 now `_res' is a thread-local instead of a global variable, modifying it
1096 in one thread does not have any effect in other threads.
1098 The resolver library was also extended to allow IPv6 as the transport
1099 protocol for the requests. This work was done by Stig Venaas.
1101 * Compatibility code for K&R C compilers has been removed from the
1102 header files. A ISO C compiler is needed to use the library
1103 (conforming to either C89 or C99 standard).
1105 * Complete rewrite of the localedef program to support multibyte character
1106 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1107 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1108 Implemented by Ulrich Drepper.
1110 Bruno Haible significantly improved the generation and use of the data
1111 structures for the wide character tables.
1113 * Plural handling in gettext implemented by Ulrich Drepper.
1115 * The utmp daemon has been removed.
1117 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1119 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1120 and Yutaka Niibe.
1122 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1124 * POSIX barriers implemented by Kaz Kylheku.
1126 * POSIX spawn function family implemented by Ulrich Drepper.
1128 * POSIX spinlocks are now available.
1130 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1132 * the configure option --enable-kernel=X.Y.Z allows to strip out
1133 compatibility for kernel versions before X.Y.Z. This is currently only
1134 implemented for Linux.
1136 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1137 field sin6_scope_id. This means that all programs using IPv6 should be
1138 recompiled. Don't expect binary compatibility with previous glibc
1139 versions.
1141 * various conversion modules for IBM character sets contributed by
1142 Masahide Washizawa.
1144 * IA-64 port by Jes Sorensen and HJ Lu.
1145 \f
1146 Version 2.1.3
1148 * bug fixes
1150 \f
1151 Version 2.1.2
1153 * bug fixes
1155 \f
1156 Version 2.1.1
1158 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1160 * New xdr functions are added; some rpc functions are now 64bit clean.
1162 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1164 * Fixed known incompatibilities with glibc 2.0.
1166 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1168 * Optimized a number of functions (especially the ELF dynamic loader).
1170 * Update timezone data files.
1172 * lots of charmaps corrections
1174 * some new locale definitions and charmaps
1176 \f
1177 Version 2.1
1179 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1180 conform to POSIX member type requirements. Symbol versions have been
1181 adjusted as needed within the library, and for direct use by applications,
1182 but there is potential for problems if third-party libraries use
1183 struct timeval as part of their interface. This does not present
1184 a problem for X and other "essential" system libraries.
1186 * An additional locale model to support C++ Standard Library locale
1187 model and probably more was implemented by Ulrich Drepper.
1189 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1190 symbol level.
1192 * Miles Bader provided the `argp' function family to support hierachical
1193 command line argument parsing, layered on top of getopt.
1195 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1197 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1198 numbers.
1200 * scanf recognizes the %a and %A format for scanning floating point numbers.
1202 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1203 information and interfaces for the available integer types.
1205 * about 130 new math functions were added to implement the ISO C9x math
1206 library.
1208 * the new header <complex.h> contains definitions of the complex math
1209 functions from ISO C 9X.
1211 * the new header <tgmath.h> defines generic macros to use complex or
1212 real valued functions.
1214 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1216 * Andreas Jaeger provided a test suite for the math library.
1218 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1220 * Ulrich Drepper added character set conversion functions (iconv).
1222 * Optimized string functions have been added.
1224 * The localedata addon is now part of glibc.
1226 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1228 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1229 daemon for NSS (nscd).
1231 Missing a better place here are some numbers on improvements. Under
1232 Linux 2.1.125 un-tar-ing the kernel sources takes
1234 user system wall
1236 using local files 12.19s 6.88s 22.91s
1238 using NIS 13.92s 8.91s 26.34s
1240 using NIS & nscd 10.37s 7.34s 25.30s
1242 using NIS+ 27.57s 30.37s 640.46s
1244 using NIS+ & nscd 10.25s 7.83s 26.51s
1246 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1248 Keep in mind that non-namelookup related operations dominate above times.
1249 It was just a common complain that using NIS+ unpacking the kernel is
1250 horribly slow.
1252 [1] The old nscd implementation is not available anymore since it was
1253 distributed with glibc up to version 2.0.98 and thus is now replaced.
1255 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1257 * Mark Kettenis provided a Hesiod NSS module.
1259 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1260 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1262 * rcmd can now handle netgroups (Dick Streefland).
1264 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1265 Bambrough.
1267 * Support for the IPv6 protocol has been added to the socket API, as per the
1268 latest draft standards.
1270 * Support for Linux 2.2 has been added.
1272 * Interface changes relative to the latest 2.0.x release:
1273 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1274 addseverity NEW: Unix98
1275 alphasort64 NEW: LFS
1276 argp_err_exit_status NEW: argp, GNU ext
1277 argp_error NEW: argp, GNU ext
1278 argp_failure NEW: argp, GNU ext
1279 argp_help NEW: argp, GNU ext
1280 argp_parse NEW: argp, GNU ext
1281 argp_program_bug_address NEW: argp, GNU ext
1282 argp_program_version NEW: argp, GNU ext
1283 argp_program_version_hook NEW: argp, GNU ext
1284 argp_state_help NEW: argp, GNU ext
1285 argp_usage NEW: argp, GNU ext
1286 authdes_create NEW: Secure RPC
1287 authdes_getucred NEW: Secure RPC
1288 authdes_pk_create NEW: Secure RPC
1289 backtrace NEW: GNU ext.
1290 backtrace_symbols NEW: GNU ext.
1291 backtrace_symbols_fd NEW: GNU ext.
1292 cacos NEW: ISO C 9x
1293 cacosf NEW: ISO C 9x
1294 cacosh NEW: ISO C 9x
1295 cacoshf NEW: ISO C 9x
1296 cacoshl NEW: ISO C 9x
1297 cacosl NEW: ISO C 9x
1298 capget NEW: kernel
1299 capset NEW: kernel
1300 carg NEW: ISO C 9x
1301 cargf NEW: ISO C 9x
1302 cargl NEW: ISO C 9x
1303 casin NEW: ISO C 9x
1304 casinf NEW: ISO C 9x
1305 casinh NEW: ISO C 9x
1306 casinhf NEW: ISO C 9x
1307 casinhl NEW: ISO C 9x
1308 casinl NEW: ISO C 9x
1309 catan NEW: ISO C 9x
1310 catanf NEW: ISO C 9x
1311 catanh NEW: ISO C 9x
1312 catanhf NEW: ISO C 9x
1313 catanhl NEW: ISO C 9x
1314 catanl NEW: ISO C 9x
1315 cbc_crypt NEW: Secure RPC
1316 ccos NEW: ISO C 9x
1317 ccosf NEW: ISO C 9x
1318 ccosh NEW: ISO C 9x
1319 ccoshf NEW: ISO C 9x
1320 ccoshl NEW: ISO C 9x
1321 ccosl NEW: ISO C 9x
1322 cexp NEW: ISO C 9x
1323 cexpf NEW: ISO C 9x
1324 cexpl NEW: ISO C 9x
1325 cimag NEW: ISO C 9x
1326 cimagf NEW: ISO C 9x
1327 cimagl NEW: ISO C 9x
1328 clearerr_locked REMOVED
1329 clntunix_create NEW: sunrpc ext
1330 clog NEW: ISO C 9x
1331 clog10 NEW: ISO C 9x
1332 clog10f NEW: ISO C 9x
1333 clog10l NEW: ISO C 9x
1334 clogf NEW: ISO C 9x
1335 clogl NEW: ISO C 9x
1336 conj NEW: ISO C 9x
1337 conjf NEW: ISO C 9x
1338 conjl NEW: ISO C 9x
1339 cpow NEW: ISO C 9x
1340 cpowf NEW: ISO C 9x
1341 cpowl NEW: ISO C 9x
1342 cproj NEW: ISO C 9x
1343 cprojf NEW: ISO C 9x
1344 cprojl NEW: ISO C 9x
1345 creal NEW: ISO C 9x
1346 crealf NEW: ISO C 9x
1347 creall NEW: ISO C 9x
1348 creat64 NEW: LFS
1349 csin NEW: ISO C 9x
1350 csinf NEW: ISO C 9x
1351 csinh NEW: ISO C 9x
1352 csinhf NEW: ISO C 9x
1353 csinhl NEW: ISO C 9x
1354 csinl NEW: ISO C 9x
1355 csqrt NEW: ISO C 9x
1356 csqrtf NEW: ISO C 9x
1357 csqrtl NEW: ISO C 9x
1358 ctan NEW: ISO C 9x
1359 ctanf NEW: ISO C 9x
1360 ctanh NEW: ISO C 9x
1361 ctanhf NEW: ISO C 9x
1362 ctanhl NEW: ISO C 9x
1363 ctanl NEW: ISO C 9x
1364 des_setparity NEW: Secure RPC
1365 ecb_crypt NEW: Secure RPC
1366 endutxent NEW: Unix98
1367 exp10 NEW: ISO C 9x
1368 exp10f NEW: ISO C 9x
1369 exp10l NEW: ISO C 9x
1370 exp2 NEW: ISO C 9x
1371 exp2f NEW: ISO C 9x
1372 exp2l NEW: ISO C 9x
1373 fattach NEW: STREAMS
1374 fdetach NEW: STREAMS
1375 fdim NEW: ISO C 9x
1376 fdimf NEW: ISO C 9x
1377 fdiml NEW: ISO C 9x
1378 feclearexcept NEW: ISO C 9x
1379 fegetenv NEW: ISO C 9x
1380 fegetexceptflag NEW: ISO C 9x
1381 fegetround NEW: ISO C 9x
1382 feholdexcept NEW: ISO C 9x
1383 feof_locked REMOVED
1384 feraiseexcept NEW: ISO C 9x
1385 ferror_locked REMOVED
1386 fesetenv NEW: ISO C 9x
1387 fesetexceptflag NEW: ISO C 9x
1388 fesetround NEW: ISO C 9x
1389 fetestexcept NEW: ISO C 9x
1390 feupdateenv NEW: ISO C 9x
1391 fflush_locked REMOVED
1392 ffsl NEW: GNU ext.
1393 ffsll NEW: GNU ext.
1394 fgetpos64 NEW: LFS
1395 fgets_unlocked NEW: GNU ext.
1396 fileno_locked REMOVED
1397 fma NEW: ISO C 9x
1398 fmaf NEW: ISO C 9x
1399 fmal NEW: ISO C 9x
1400 fmax NEW: ISO C 9x
1401 fmaxf NEW: ISO C 9x
1402 fmaxl NEW: ISO C 9x
1403 fmin NEW: ISO C 9x
1404 fminf NEW: ISO C 9x
1405 fminl NEW: ISO C 9x
1406 fmtmsg NEW: Unix98
1407 fopen64 NEW: LFS
1408 fputc_locked REMOVED
1409 fputs_unlocked NEW: GNU ext.
1410 fread_unlocked NEW: GNU ext.
1411 freopen64 NEW: LFS
1412 fseeko NEW: Unix98
1413 fsetpos64 NEW: LFS
1414 fstatfs64 NEW: LFS
1415 fstatvfs NEW: Unix98
1416 fstatvfs64 NEW: LFS
1417 ftello NEW: Unix98
1418 ftello64 NEW: LFS
1419 ftruncate64 NEW: LFS
1420 ftw64 NEW: LFS
1421 fwrite_unlocked NEW: GNU ext.
1422 gai_strerror NEW: IPv6
1423 gamma_r REMOVED
1424 gammaf_r REMOVED
1425 gammal_r REMOVED
1426 getchar_locked REMOVED
1427 getdate NEW: Unix98
1428 getdate_err NEW: Unix98
1429 getdate_r NEW: GNU ext.
1430 getmsg NEW: STREAMS
1431 getnameinfo NEW: IPv6
1432 getnetname NEW: Secure RPC
1433 getpmsg NEW: STREAMS
1434 getpt NEW: Unix98 PTY
1435 getrlimit64 NEW: LFS
1436 getutxent NEW: Unix98
1437 getutxid NEW: Unix98
1438 getutxline NEW: Unix98
1439 glob64 NEW: GNU ext.
1440 globfree64 NEW: GNU ext.
1441 gnu_get_libc_release NEW: GNU ext.
1442 gnu_get_libc_version NEW: GNU ext.
1443 grantpt NEW: Unix98 PTY
1444 host2netname NEW: Secure RPC
1445 iconv NEW: iconv
1446 iconv_close NEW: iconv
1447 iconv_open NEW: iconv
1448 if_freenameindex NEW: IPv6
1449 if_indextoname NEW: IPv6
1450 if_nameindex NEW: IPv6
1451 if_nametoindex NEW: IPv6
1452 in6addr_any NEW: IPv6
1453 in6addr_loopback NEW: IPv6
1454 inet6_isipv4mapped NEW: IPv6
1455 isastream NEW: STREAMS
1456 iswblank NEW: GNU ext.
1457 key_decryptsession NEW: Secure RPC
1458 key_decryptsession_pk NEW: Secure RPC
1459 key_encryptsession NEW: Secure RPC
1460 key_encryptsession_pk NEW: Secure RPC
1461 key_gendes NEW: Secure RPC
1462 key_get_conv NEW: Secure RPC
1463 key_secretkey_is_set NEW: Secure RPC
1464 key_setnet NEW: Secure RPC
1465 key_setsecret NEW: Secure RPC
1466 llrint NEW: ISO C 9x
1467 llrintf NEW: ISO C 9x
1468 llrintl NEW: ISO C 9x
1469 llround NEW: ISO C 9x
1470 llroundf NEW: ISO C 9x
1471 llroundl NEW: ISO C 9x
1472 log2 NEW: ISO C 9x
1473 log2f NEW: ISO C 9x
1474 log2l NEW: ISO C 9x
1475 lrint NEW: ISO C 9x
1476 lrintf NEW: ISO C 9x
1477 lrintl NEW: ISO C 9x
1478 lround NEW: ISO C 9x
1479 lroundf NEW: ISO C 9x
1480 lroundl NEW: ISO C 9x
1481 lseek64 NEW: LFS
1482 makecontext NEW: Unix98
1483 mempcpy NEW: GNU ext.
1484 mmap64 NEW: LFS
1485 moncontrol REMOVED
1486 modify_ldt NEW: kernel
1487 nan NEW: ISO C 9x
1488 nanf NEW: ISO C 9x
1489 nanl NEW: ISO C 9x
1490 nearbyint NEW: ISO C 9x
1491 nearbyintf NEW: ISO C 9x
1492 nearbyintl NEW: ISO C 9x
1493 netname2host NEW: Secure RPC
1494 netname2user NEW: Secure RPC
1495 nexttoward NEW: ISO C 9x
1496 nexttowardf NEW: ISO C 9x
1497 nexttowardl NEW: ISO C 9x
1498 nftw NEW: Unix98
1499 nftw64 NEW: LFS
1500 open64 NEW: LFS
1501 passwd2des NEW: Secure RPC
1502 pow10 NEW: GNU ext.
1503 pow10f NEW: GNU ext.
1504 pow10l NEW: GNU ext.
1505 pread NEW: Unix98
1506 pread64 NEW: LFS
1507 printf_size NEW: GNU ext.
1508 printf_size_info NEW: GNU ext.
1509 profil_counter REMOVED
1510 pthread_mutexattr_getkind_np REPLACED
1511 pthread_mutexattr_setkind_np REPLACED
1512 ptsname NEW: Unix98 PTY
1513 ptsname_r NEW: Unix98 PTY
1514 putc_locked REMOVED
1515 putchar_locked REMOVED
1516 putgrent NEW: GNU ext.
1517 putmsg NEW: STREAMS
1518 putpmsg NEW: STREAMS
1519 pututxline NEW: Unix98
1520 pwrite NEW: Unix98
1521 pwrite64 NEW: LFS
1522 readdir64 NEW: LFS
1523 readdir64_r NEW: LFS
1524 remquo NEW: ISO C 9x
1525 remquof NEW: ISO C 9x
1526 remquol NEW: ISO C 9x
1527 round NEW: ISO C 9x
1528 roundf NEW: ISO C 9x
1529 roundl NEW: ISO C 9x
1530 rtime NEW: GNU ext.
1531 scalbln NEW: ISO C 9x
1532 scalblnf NEW: ISO C 9x
1533 scalblnl NEW: ISO C 9x
1534 scandir64 NEW: LFS
1535 sendfile NEW: kernel
1536 setcontext NEW: Unix98
1537 setrlimit64 NEW: LFS
1538 setutxent NEW: Unix98
1539 sighold NEW: Unix98
1540 sigignore NEW: Unix98
1541 sigqueue NEW: POSIX.1b
1542 sigrelse NEW: Unix98
1543 sigset NEW: POSIX.1b
1544 sigtimedwait NEW: POSIX.1b
1545 sigwaitinfo NEW: POSIX.1b
1546 sincos NEW: GNU ext.
1547 sincosf NEW: GNU ext.
1548 sincosl NEW: GNU ext.
1549 statfs64 NEW: LFS
1550 statvfs NEW: Unix98
1551 statvfs64 NEW: LFS
1552 strcasestr NEW: GNU ext.
1553 strtoimax NEW: ISO C 9x
1554 strtoumax NEW: ISO C 9x
1555 strverscmp NEW: GNU ext.
1556 svcauthdes_stats NEW: Secure RPC
1557 svcunix_create NEW: sunrpc etx
1558 svcunixfd_create NEW: sunrpc ext
1559 swapcontext NEW: Unix98
1560 tcgetsid NEW: Unix98 PTY
1561 tdestroy NEW: GNU ext.
1562 tgamma NEW: ISO C 9x
1563 tgammaf NEW: ISO C 9x
1564 tgammal NEW: ISO C 9x
1565 tmpfile64 NEW: LFS
1566 trunc NEW: ISO C 9x
1567 truncate64 NEW: LFS
1568 truncf NEW: ISO C 9x
1569 truncl NEW: ISO C 9x
1570 umount2 NEW: kernel
1571 unlockpt NEW: Unix98 PTY
1572 updwtmpx NEW: Unix98
1573 user2netname NEW: Secure RPC
1574 utmpxname NEW: Unix98
1575 versionsort NEW: GNU ext.
1576 versionsort64 NEW: GNU ext.
1577 waitid NEW: Unix98
1578 wcscasecmp NEW: GNU ext.
1579 wcsncasecmp NEW: GNU ext.
1580 wcsnlen NEW: GNU ext.
1581 wcstoimax NEW: ISO C 9x
1582 wcstoll NEW: ISO C 9x
1583 wcstoull NEW: ISO C 9x
1584 wcstoumax NEW: ISO C 9x
1585 wcswcs NEW: Unix98
1586 wordexp NEW: POSIX.2
1587 wordfree NEW: POSIX.2
1588 write_profiling REMOVED
1589 xdecrypt NEW: Secure RPC
1590 xdr_authdes_cred NEW: Secure RPC
1591 xdr_authdes_verf NEW: Secure RPC
1592 xdr_cryptkeyarg NEW: Secure RPC
1593 xdr_cryptkeyarg2 NEW: Secure RPC
1594 xdr_cryptkeyres NEW: Secure RPC
1595 xdr_getcredres NEW: Secure RPC
1596 xdr_key_netstarg NEW: Secure RPC
1597 xdr_key_netstres NEW: Secure RPC
1598 xdr_keybuf NEW: Secure RPC
1599 xdr_keystatus NEW: Secure RPC
1600 xdr_netnamestr NEW: Secure RPC
1601 xdr_sizeof NEW: Secure RPC
1602 xdr_unixcred NEW: sunrpc ext
1603 xencrypt NEW: Secure RPC
1604 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1605 \f
1606 Version 2.0.6
1608 * more bug fixes
1610 \f
1611 Version 2.0.5
1613 * more bug fixes
1615 * inet_ntoa is thread-safe
1617 * updwtmp is moved from libutil to libc
1619 * rewrite of cbrt function
1621 * update of timezone data
1622 \f
1623 Version 2.0.4
1625 * more bug fixes
1626 \f
1627 Version 2.0.3
1629 * more bug fixes
1630 \f
1631 Version 2.0.2
1633 * more bug fixes
1635 * add atoll function
1637 * fix complex problems in Berkeley DB code
1639 * fix math functions
1640 \f
1641 Version 2.0.1
1643 * fixed lots of header problems (especially Linux/GNU specific)
1645 * dynamic loader preserves all registers
1647 * Roland McGrath provided support for handling of auxiliary objects in
1648 the ELF dynamic loader.
1650 * support for parallel builds is improved
1651 \f
1652 Version 2.0
1654 * GNU extensions are no longer declared by default. To enable them you
1655 must define the macro `_GNU_SOURCE' in your program or compile with
1656 `-D_GNU_SOURCE'.
1658 * The library has changed from using GNU ld symbol aliases to using weak
1659 symbols where available. The ELF object file format supports weak
1660 symbols; GNU ld also supports weak symbols in the a.out format. (There
1661 is also now support for other GNU ld extensions in ELF. Use the
1662 `--with-elf' option to configure to indicate you have ELF, and
1663 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1664 of many files which contained only symbol aliases, reducing the size of
1665 the source and the compiled library; many other files were renamed to
1666 less cryptic names previously occupied by the symbol alias files.
1667 There is a new header file <elf.h> for programs which operate on
1668 files in the ELF format.
1670 * Converted to Autoconf version 2, so `configure' has more options.
1671 Run `configure --help' to see the details.
1673 * The library can now be configured to build profiling, highly-optimized
1674 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1675 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1676 `configure' enable building these extra libraries. The shared library is
1677 built by default when using both ELF and GNU ld. When shared libraries
1678 are enabled, the new library `-ldl' is available for arbitrary run-time
1679 loading of shared objects; its interface is defined in <dlfcn.h>. The
1680 new header file <link.h> gives access to the internals of the run-time
1681 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1682 application of same name on other systems and it provides information
1683 about dynamically linked binaries.
1685 * The C library now provides the run-time support code for profiling
1686 executables compiled with `-pg'. Programs can control the profiling code
1687 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1688 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1689 the support for this file format was contributed by David Mosberger-Tang.
1691 * The math code has been replaced with a math library based on fdlibm from
1692 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1693 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1694 functions. The math functions now reside in a separate library, so
1695 programs using them will need to use `-lm' their linking commands.
1697 * John C. Bowman contributed optimized ix87 assembler inline functions.
1699 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1700 mechanism similar to that found in Solaris 2. This is now used for the
1701 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1702 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1703 file controls what services are used for each individual database. This
1704 works by loading shared libraries with names specified in `nsswitch.conf',
1705 so service modules can be changed or added at any time without even
1706 relinking any program. Currently there are the file, db, and NIS based
1707 NSS services available.
1709 * The new functions `strtoq' and `strtouq' parse integer values from
1710 strings, like `strtol' and `strtoul', but they return `long long int' and
1711 `unsigned long long int' values, respectively (64-bit quantities).
1713 * The new functions `strtof' and `strtold' parse floating-point values from
1714 strings, like `strtod', but they return `float' and `long double' values,
1715 respectively (on some machines `double' and `long double' are the same).
1717 * Ulrich Drepper has contributed new implementations of the floating-point
1718 printing and reading code used in the `printf' family of functions and
1719 `strtod', `strtof', and `strtold'. These new functions are perfectly
1720 accurate, and much faster than the old ones.
1722 * The implementation of the POSIX locale model was completely rewritten by
1723 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1724 to compile the POSIX locale definition.
1726 * The former dummy implementations of the strcoll and strxfrm function are
1727 now replaced by fully functional code contributed by Ulrich Drepper. The
1728 collation information comes from the POSIX locale definitions.
1730 * The new header <langinfo.h> defines an interface for accessing
1731 various locale-dependent data (using the locale chosen with `setlocale').
1733 * Ulrich Drepper has contributed a new suite of functions for operation on
1734 wide-character and multibyte-character strings, in <wchar.h>;
1735 and classification and case conversion of wide characters, in <wctype.h>.
1736 These new functions are conforming to the ISO C, Amendement 1 specification.
1738 * There is now a second implementation of the standard I/O library available.
1739 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1740 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1742 * You can now use positional parameter specifications in format strings
1743 for the `printf' and `scanf' families of functions. For example,
1744 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1745 ``Number 6, Mr Jones''. This is mainly useful when providing different
1746 format strings for different languages, whose grammars may dictate
1747 different orderings of the values being printed. To support this
1748 feature, the interface for `register_printf_handler' has changed; see
1749 the header file <printf.h> for details.
1751 * The `printf' and `scanf' families of functions now understand a new
1752 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1753 to group numbers as indicated by the locale; for `scanf' and friends, this
1754 says to accept as valid only a number with all the proper grouping
1755 separators in the right places. In the default "C" locale, numbers are
1756 not grouped; but locales for specific countries will define the usual
1757 conventions (i.e. separate thousands with `,' in the US locale).
1759 * The pgrp functions have been regularized, slightly incompatibly but much
1760 less confusingly. The core functions are now `getpgid' and `setpgid',
1761 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1762 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1763 provided for compatibility. There is no longer an incompatible `getpgrp'
1764 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1766 * The new header file <fts.h> and suite of functions simplify programs that
1767 operate on directory trees. This code comes from 4.4 BSD.
1769 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1770 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1771 NSS scheme used in glibc.
1773 * There is a new malloc debugging hook `__memalign_hook'.
1775 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1776 `unsigned int' in <sys/types.h>. These are for compatibility only and
1777 their use is discouraged.
1779 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1780 done differently, so that it works even without GNU ld.
1782 * New function `euidaccess' checks allowed access to a file like `access',
1783 but using the effective IDs instead of the real IDs.
1785 * The time zone data files have been updated for the latest and greatest
1786 local time conventions of the countries of the world.
1788 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1789 see <dirent.h>.
1791 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1792 for formatting floating-point numbers. They are provided only for
1793 compatibility; new programs should use `sprintf' instead. There are
1794 also equivalent function for the `long double' floating-point type and
1795 all functions also exist in a reentrant form.
1797 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1798 functions for maintaining the login-record files (primarily of use to
1799 system programs such as `login'), and convenient functions for
1800 allocating and initializing a pseudo-terminal (pty) device.
1802 * Ulrich Drepper has contributed new support for System V style
1803 shared memory and IPC on systems that support it.
1805 * Ulrich Drepper has contributed several miscellaneous new functions found
1806 in System V: The `hsearch' family of functions provide an effective
1807 implementation of hash tables; `a64l' and `l64a' provide a very simple
1808 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1809 number generator.
1811 * Ulrich Drepper has contributed new reentrant counterparts for the
1812 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1814 * Ulrich Drepper has contributed new, highly-optimized versions of several
1815 string functions for the i486/Pentium family of processors.
1817 * Ulrich Drepper has updated the Linux-specific code, based largely
1818 on work done in Hongjiu Lu's version of GNU libc for Linux.
1819 The GNU library now supports Linux versions 2.0.10 and later,
1820 using the ELF object file format (i[3456]86-*-linux).
1822 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1824 * David Mosberger-Tang and Richard Henderson have ported the C library
1825 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1826 dynamic linking support for ELF/Alpha.
1828 * Richard Henderson contributed several Alpha optimized assembler function
1829 for arithmetic and string handling.
1831 * Ulrich Drepper has contributed a new set of message catalog functions to
1832 support multiple languages using the <libintl.h> interface, for use with
1833 his new package GNU gettext. Translation volunteers have contributed
1834 catalogs of the library's messages in Spanish, German, and Korean.
1836 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1837 program and the `catgets' function for reading the catalog files it
1838 creates. (The <libintl.h> interface is preferred; we include the
1839 <nl_types.h> interface using `catgets' only for source compatibility with
1840 programs already written to use it.)
1842 * New header file <values.h> gives SVID-compatible names for <limits.h>
1843 constants.
1845 * Various new macros, declarations, and small header files for compatibility
1846 with 4.4 BSD.
1848 * New function `group_member' is a convenient way to check if a process has
1849 a given effective group ID.
1851 * When using GCC 2.7 and later, the socket functions are now declared in a
1852 special way so that passing an argument of type `struct sockaddr_in *',
1853 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1854 `struct sockaddr *' type, does not generate a type-clash warning.
1856 * New function `error' declared in header file <error.h> is a convenient
1857 function for printing error messages and optionally exiting; this is the
1858 canonical function used in GNU programs. The new functions `err', `warn',
1859 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1860 doing the same thing.
1862 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1863 POSIX.2 `glob' function to do ~ and {...} expansion.
1865 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1866 `clearenv' which is used in POSIX.9 is also available.
1868 * New function `getsid' returns session ID number on systems that support it.
1870 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1871 files <db.h> and <mpool.h> provide a rich set of functions for several
1872 types of simple databases stored in memory and in files, and <ndbm.h> is
1873 an old `ndbm'-compatible interface using the `db' functions. Link with
1874 `-ldb' to get these functions.
1876 * New macro `strdupa' copies a string like `strdup', but uses local stack
1877 space from `alloca' instead of dynamic heap space from `malloc'.
1879 * New function `strnlen' is like `strlen' but searches only a given maximum
1880 number of characters for the null terminator. `stpncpy', `strndup' and
1881 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1882 function.
1884 * New function `statfs' in header <sys/statfs.h>.
1886 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1887 provide convenient functions for operating on blocks of null-terminated
1888 strings.
1890 * A new suite of functions in <utmp.h> handle all the details of reading
1891 and writing the utmp file.
1893 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1894 Thorsten Kukuk.
1896 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1897 completely POSIX compliant and also implemented the extended functionality
1898 to handle alternate digit representation and alternate era date formats.
1900 * Ulrich Drepper provided an implementation of the `strptime' function
1901 defined in XPG4.2 which transforms a string into a `struct tm' value.
1903 * Paul Eggert provided the tzselect shell script as part of the timezone
1904 code. The shell script makes it easy to select the correct timezone
1905 specification.
1907 * The implementation of the malloc family of functions is completely replaced
1908 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1909 The implementation uses the mmap function (if available) and it is
1910 optimized for the use in multi threaded programs.
1912 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1913 functions. This new functionality is usable by specifying a special
1914 salt string and it is compatible with implementation on *BSD systems.
1916 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1917 `getsubopt' to handle second level command line options, `bsd_signal'
1918 to access BSD style `signal' functionality, the obsolete `regexp' style
1919 expression matcher.
1921 * the `lchown' function is available on system which support this
1922 functionality.
1924 * The implementation of the shadow password handling function was contributed
1925 by Ulrich Drepper.
1927 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1929 * POSIX.1g support was added. The <sys/select.h> header is available,
1930 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1931 implementation of `getaddrinfo'.
1932 \f
1933 Version 1.09
1935 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1937 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1938 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1940 * The new function `daemon' from 4.4 BSD is useful for server programs that
1941 want to put themselves in the background.
1943 * Joel Sherrill has contributed support for several standalone boards that
1944 run without an operating system.
1946 * `printf', `scanf' and friends now accept a `q' type modifier for long
1947 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1949 * All of the code taken from BSD (notably most of the math and networking
1950 routines) has been updated from the BSD 4.4-Lite release.
1952 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1954 * The new functions `getdomainname' and `setdomainname' fetch or change the
1955 YP/NIS domain name. These are system calls which exist on systems which
1956 have YP (aka NIS).
1958 * The time zone data files have been updated for the latest international
1959 conventions.
1961 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1962 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1963 \f
1964 Version 1.08
1966 * The C library now includes support for Sun RPC, from Sun's free
1967 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1968 are included. (There is still no support for YP.)
1970 * Tom Quinn has contributed a port of the C library to SGI machines running
1971 Irix 4 (mips-sgi-irix4).
1973 * The new `lockf' function is a simplified interface to the locking
1974 facilities of `fcntl', included for compatibility.
1976 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1978 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1980 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1981 compatibility.
1983 * The error message printed by `assert' for a failed assertion now includes
1984 the name of the program (if using GNU ld) and the name of the calling
1985 function (with versions of GCC that support this).
1987 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1989 * The library now includes the <sys/mman.h> header file and memory
1990 management functions `mmap', `munmap', `mprotect', `msync', and
1991 `madvise', on systems that support those facilities.
1993 * The interface for `mcheck' has changed slightly: the function called to
1994 abort the program when an allocation inconsistency is detected now takes
1995 an argument that indicates the type of failure. The new function
1996 `mprobe' lets you request a consistency check for a particular block at
1997 any time (checks are normally done only when you call `free' or `realloc'
1998 on a block).
2000 * It is now possible to easily cross-compile the C library, building on one
2001 system a library to run on another machine and/or operating system. All
2002 you need to do is set the variable `HOST_CC' in `configparms' to the
2003 native compiler for programs to run on the machine you are building on (a
2004 few generator programs are used on Unix systems); set `CC' to the
2005 cross-compiler.
2007 * The new function `fexecve' (only implemented on the GNU system) executes
2008 a program file given a file descriptor already open on the file.
2009 \f
2010 Version 1.07
2012 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2013 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2015 * You can set the variable `libprefix' in `configparms' to specify a prefix
2016 to be prepended to installed library files; this makes it easy to install
2017 the GNU C library to be linked as `-lgnuc' or whatever.
2019 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2020 copies a limited number of characters from a string, and returns the
2021 address of the last character written.
2023 * You no longer need to check for whether the installed `stddef.h' is
2024 compatible with the GNU C library. configure now checks for you.
2026 * You can now define a per-stream `fileno' function to convert the
2027 stream's cookie into an integral file descriptor.
2029 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2030 allocates zero bytes of storage, and returns a unique pointer which
2031 you can pass to `realloc' or `free'. The behavior is undefined if
2032 you dereference this pointer.
2034 * The C library now runs on Sony NEWS m68k machines running either
2035 NewsOS 3 or NewsOS 4.
2037 * The new `syscall' function is a system-dependent primitive function
2038 for invoking system calls. It has the canonical behavior on Unix
2039 systems, including unreliable return values for some calls (such as
2040 `pipe', `fork' and `getppid').
2042 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2043 to `EAGAIN', which is the preferred name. On systems whose kernels
2044 use two distinct codes, the C library now translates EWOULDBLOCK to
2045 EAGAIN in every system call function.
2046 \f
2047 Version 1.06
2049 * The GNU C Library Reference Manual is now distributed with the library.
2050 `make dvi' will produce a DVI file of the printed manual.
2051 `make info' will produce Info files that you can read on line using C-h i
2052 in Emacs or the `info' program.
2053 Please send comments on the manual to bug-glibc-manual@gnu.org.
2055 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2057 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2059 * Jason Merrill has contributed a port to the Sequent Symmetry running
2060 Dynix version 3 (i386-sequent-dynix).
2062 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2063 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2065 * New function `memory_warnings' lets you arrange to get warnings when
2066 malloc is running out of memory to allocate, like Emacs gives you.
2068 * The C library now contains the relocating allocator used in Emacs 19 for
2069 its editing buffers. This allocator (ralloc) minimizes allocation
2070 overhead and fragmentation by moving allocated regions around whenever it
2071 needs to. You always refer to a ralloc'd region with a "handle" (a
2072 pointer to a pointer--an object of type `void **').
2074 * There is a new `printf' format: `%m' gives you the string corresponding
2075 to the error code in `errno'.
2077 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2078 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2079 pass, the `a' modifier says to fill in a `char **' you pass with a
2080 malloc'd string.
2082 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2083 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2084 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2086 * `mkstemp' is a traditional Unix function to atomically create and open a
2087 uniquely-named temporary file.
2088 \f
2089 Version 1.05
2091 * The standard location for the file that says what the local timezone is
2092 has changed again. It is now `/usr/local/etc/localtime' (or more
2093 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2095 * The distribution no longer contains any files with names longer than 14
2096 characters.
2098 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2099 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2101 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2102 \f
2103 Version 1.04
2105 * The configuration process has changed quite a bit. The `configure'
2106 script is now used just like the configuration scripts for other GNU
2107 packages. The `sysdeps' directory hierarchy is much rearranged.
2108 The file `INSTALL' explains the new scheme in detail.
2110 * The header files no longer need to be processed into ANSI C and
2111 traditional C versions. There is just one set of files to install, and
2112 it will work with ANSI or old C compilers (including `gcc -traditional').
2114 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2115 MIPS DECStation running Ultrix 4.
2117 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2118 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2119 made itself into a shared library.
2121 * Yet further improved support for the i386, running 4.3 BSD-like systems
2122 (such as Mach 3 with the Unix single-server), or System V.
2124 * New function `strncasecmp' to do case-insensitive string comparison
2125 with limited length.
2127 * New function `strsep' is a reentrant alternative to `strtok'.
2129 * New functions `scandir' and `alphasort' for searching directories.
2131 * New function `setenv' is a better interface to `putenv'.
2133 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2134 function for traversing a directory tree.
2136 * The GNU obstack package is now also part of the C library.
2137 The new function `open_obstack_stream' creates a stdio stream that
2138 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2139 formatted output directly to an obstack.
2141 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2142 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2144 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2146 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2147 things to your strings.
2149 * There are some new test programs: test-fseek, testmb, and testrand.
2151 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2152 These ports are not finished, but are a good starting place for really
2153 supporting those systems.
2155 * `/etc/localtime' is now the standard location for the file that says what
2156 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2157 This follows the general principle that `/etc' is the place for all local
2158 configuration files.
2160 * The C library header files now use `extern "C"' when used by the C++
2161 compiler, so the C library should now work with C++ code.
2163 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2164 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2165 in <strings.h>.)
2167 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2168 function which uses the `merge sort' algorithm, and is said to be
2169 significantly faster than the old GNU `qsort' function. Merge sort is
2170 now the standard `qsort' function. The new algorithm can require a lot
2171 of temporary storage; so, the old sorting function is called when the
2172 required storage is not available.
2174 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2175 provides the Unix `crypt' function, plus some other entry points.
2177 * The code and header files taken from 4.4 BSD have been updated with the
2178 latest files released from Berkeley.
2179 \f
2180 ----------------------------------------------------------------------
2181 Copyright information:
2183 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2185 Permission is granted to anyone to make or distribute verbatim copies
2186 of this document as received, in any medium, provided that the
2187 copyright notice and this permission notice are preserved,
2188 thus giving the recipient permission to redistribute in turn.
2190 Permission is granted to distribute modified versions
2191 of this document, or of portions of it,
2192 under the above conditions, provided also that they
2193 carry prominent notices stating who last changed them.
2194 \f
2195 Local variables:
2196 version-control: never
2197 fill-column: 76
2198 End: