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1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2013 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 2.18.1
10 * The following bugs are resolved with this release:
12 14143, 14155, 14547, 14699, 15073, 15128, 15532, 15427, 15522, 15680,
13 15723, 15734, 15735, 15797, 15892, 15895, 15909, 15915, 15917, 15946,
14 15996, 16072, 16150, 16169, 16387, 16414, 16430, 16431, 16510, 16617,
15 16618, 16885, 16916, 16943, 16958, 17048, 17137, 17187, 17325, 17625,
16 17630, 18007, 18104, 18287.
18 * CVE-2014-8121 The NSS files backend would reset the file pointer used by
19 the get*ent functions if any of the query functions for the same database
20 are used during the iteration, causing a denial-of-service condition in
21 some applications.
23 * A buffer overflow in gethostbyname_r and related functions performing DNS
24 requests has been fixed. If the NSS functions were called with a
25 misaligned buffer, the buffer length change due to pointer alignment was
26 not taken into account. This could result in application crashes or,
27 potentially arbitrary code execution, using crafted, but syntactically
28 valid DNS responses. (CVE-2015-1781)
30 * Support for powerpc64le has been added.
32 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
33 under certain input conditions resulting in the execution of a shell for
34 command substitution when the applicaiton did not request it. The
35 implementation now checks WRDE_NOCMD immediately before executing the
36 shell and returns the error WRDE_CMDSUB as expected.
38 * CVE-2012-3406 printf-style functions could run into a stack overflow when
39 processing format strings with a large number of format specifiers.
41 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
42 infinite loop if the DNS response contained a PTR record of an unexpected
43 format.
45 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
46 copy the path argument. This allowed programs to cause posix_spawn to
47 deference a dangling pointer, or use an unexpected pathname argument if
48 the string was modified after the posix_spawn_file_actions_addopen
49 invocation.
51 * Locale names, including those obtained from environment variables (LANG
52 and the LC_* variables), are more tightly checked for proper syntax.
53 setlocale will now fail (with EINVAL) for locale names that are overly
54 long, contain slashes without starting with a slash, or contain ".." path
55 components. (CVE-2014-0475) Previously, some valid locale names were
56 silently replaced with the "C" locale when running in AT_SECURE mode
57 (e.g., in a SUID program). This is no longer necessary because of the
58 additional checks.
60 * Support for loadable gconv transliteration modules has been removed.
61 The support for transliteration modules has been non-functional for
62 over a decade, and the removal is prompted by security defects. The
63 normal gconv conversion modules are still supported. Transliteration
64 with //TRANSLIT is still possible, and the //IGNORE specifier
65 continues to be supported. (CVE-2014-5119)
67 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
68 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
69 resulting a denial-of-service security vulnerability in applications which
70 use functions related to iconv. (CVE-2014-6040)
72 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
73 to the d_name member of struct dirent, or omit the terminating NUL
74 character. (Bugzilla #14699).
76 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
77 for AF_INET6 has been fixed (Bugzilla #16072).
79 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
80 aligned_alloc functions could allocate too few bytes or corrupt the
81 heap when passed very large allocation size values (Bugzilla #15855,
82 #15856, #15857).
84 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
85 rules for large collation sequences to optimize multiple passes and falls
86 back to alloca if malloc fails, resulting in a possible stack overflow.
87 The implementation now falls back to an uncached collation sequence lookup
88 if malloc fails.
89 \f
90 Version 2.18
92 * The following bugs are resolved with this release:
94 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
95 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
96 14142, 14155, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478,
97 14496, 14582, 14686, 14699, 14812, 14888, 14894, 14907, 14908, 14909,
98 14920, 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000,
99 15003, 15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055,
100 15062, 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232,
101 15234, 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330,
102 15331, 15335, 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366,
103 15380, 15381, 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419,
104 15423, 15424, 15426, 15427, 15429, 15431, 15432, 15441, 15442, 15448,
105 15465, 15480, 15485, 15488, 15490, 15492, 15493, 15497, 15506, 15522,
106 15529, 15532, 15536, 15553, 15577, 15583, 15618, 15627, 15631, 15654,
107 15655, 15666, 15667, 15674, 15711, 15755, 15759, 15797, 15892, 15893,
108 15895, 16882.
110 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
111 aligned_alloc functions could allocate too few bytes or corrupt the
112 heap when passed very large allocation size values (Bugzilla #15855,
113 #15856, #15857).
115 * CVE-2013-4788 The pointer guard used for pointer mangling was not
116 initialized for static applications resulting in the security feature
117 being disabled. The pointer guard is now correctly initialized to a
118 random value for static applications. Existing static applications need
119 to be recompiled to take advantage of the fix (bug 15754).
121 * CVE-2012-4412 The strcoll implementation caches indices and rules for
122 large collation sequences to optimize multiple passes. This cache
123 computation may overflow for large collation sequences and may cause a
124 stack or buffer overflow. This is now fixed to use a slower algorithm
125 which does not use a cache if there is an integer overflow.
127 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
128 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
129 Distributions can re-enable building and using pt_chown via the new configure
130 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
131 considerable security risks and should only be used if the distribution
132 understands and accepts the risks.
134 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
135 #15078).
137 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
138 fixed (Bugzilla #15330).
140 * Add support for calling C++11 thread_local object destructors on thread
141 and program exit. This needs compiler support for offloading C++11
142 destructor calls to glibc.
144 * Improved worst case performance of libm functions with double inputs and
145 output.
147 * Support for priority inherited mutexes in pthread condition variables on
148 non-x86 architectures.
150 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
152 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
154 * Optimized string functions for ARM. Implemented by Will Newton and
155 Richard Henderson.
157 * Optimized libm functions for SPARC. Implemented by David S. Miller.
159 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
160 Richard Henderson.
162 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
163 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
165 * Added a benchmark framework to track performance of functions in glibc.
167 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
168 It is based on draft TS 18661 and currently enabled as a GNU extension.
170 * On Linux, the clock function now uses the clock_gettime system call
171 for improved precision, rather than old times system call.
173 * Added new API functions pthread_getattr_default_np and
174 pthread_setattr_default_np to get and set the default pthread
175 attributes of a process.
177 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
178 This may improve lock scaling of existing programs on TSX capable systems.
179 When the --enable-lock-elision=yes parameter is specified at configure
180 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
181 mutexes.
183 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
184 availability). Implemented by Ryan S. Arnold.
186 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
187 \f
188 Version 2.17
190 * The following bugs are resolved with this release:
192 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
193 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
194 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
195 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
196 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
197 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
198 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
199 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
200 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
201 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
202 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
203 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
204 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
205 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
206 14879, 14889, 14893, 14898, 14914.
208 * Optimization of memcpy for MIPS.
210 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
211 EMFILE has been fixed (Bugzilla #14889).
213 * The add-on ports collection is now distributed in the "ports" subdirectory
214 of the main GNU C Library distribution, rather than separately.
216 * Port to ARM AArch64 contributed by Linaro.
218 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
219 Optimized versions of memcpy, memset, and memcmp added for System z10 and
220 zEnterprise z196.
221 Implemented by Andreas Krebbel.
223 * The new function secure_getenv allows secure access to the environment,
224 returning NULL if running in a SUID/SGID process. This function replaces
225 the internal function __secure_getenv.
227 * SystemTap static probes have been added into the dynamic linker.
228 Implemented by Gary Benson.
230 * Optimizations of string functions strstr, strcasestr and memmem.
231 Implemented by Maxim Kuvyrkov.
233 * The minimum Linux kernel version that this version of the GNU C Library
234 can be used with is 2.6.16.
236 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
237 powerpc POWER7. Implemented by Will Schmidt.
239 * New configure option --disable-nscd builds the C library such that it
240 never attempts to contact the Name Service Caching Daemon (nscd).
241 New configure option --disable-build-nscd avoids building nscd itself;
242 this is the default if --disable-nscd is used.
244 * Improved support for cross-compilation, including cross-testing and
245 bootstrap builds without a previously built glibc.
247 * Several testsuite tests are now able to test multiple IFUNC variants of an
248 interface, rather than just testing the one that would be chooen by
249 default.
251 * New configure options --with-bugurl and --with-pkgversion, for
252 distributors to use to embed their bug-reporting and package version
253 information in --help and --version output.
255 * The ttyname and ttyname_r functions on Linux now fall back to searching for
256 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
257 allows creation of chroots without the procfs mounted on /proc.
259 * The `crypt' function now fails if passed salt bytes that violate the
260 specification for those values. On Linux, the `crypt' function will
261 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
262 enabled, and fail on encrypted strings using the MD5 or DES algorithm
263 when the mode is enabled.
265 * The `clock_*' suite of functions (declared in <time.h>) is now available
266 directly in the main C library. Previously it was necessary to link with
267 -lrt to use these functions. This change has the effect that a
268 single-threaded program that uses a function such as `clock_gettime' (and
269 is not linked with -lrt) will no longer implicitly load the pthreads
270 library at runtime and so will not suffer the overheads associated with
271 multi-thread support in other code such as the C++ runtime library.
273 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
274 sat_IN, and szl_PL.
275 \f
276 Version 2.16
278 * The following bugs are resolved with this release:
280 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
281 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
282 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
283 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
284 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
285 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
286 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
287 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
288 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
289 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
290 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
291 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
292 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
293 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
294 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
295 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
296 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
297 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
298 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
299 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
300 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
301 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
302 14277, 14278.
304 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
305 configuring glibc with:
306 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
307 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
308 Implemented by H.J. Lu.
310 * ISO C11 support:
312 + define static_assert
314 + do not declare gets
316 + declare at_quick_exit and quick_exit also for ISO C11
318 + aligned_alloc. NB: The code is deliberately allows the size parameter
319 to not be a multiple of the alignment. This is a moronic requirement
320 in the standard but it is only a requirement on the caller, not the
321 implementation.
323 + timespec_get added
325 + uchar.h support added
327 + CMPLX, CMPLXF, CMPLXL added
329 Implemented by Ulrich Drepper.
331 * Support for the IA-64 has been moved to ports.
333 * Remove support for anything but ELF binary format
335 * Checking versions of poll, ppoll added.
336 Implemented by Ulrich Drepper.
338 * More generic and 64-bit performance optimizations to math functions.
339 Implemented by Ulrich Drepper.
341 * New configure option --enable-obsolete-rpc makes the deprecated RPC
342 headers and functions available at compile time as they were before
343 version 2.14. This option will be removed at some time in the future
344 after the TI-RPC library becomes fully sufficient for the needs of
345 existing applications.
347 * Compatibility code for Linux kernel versions before 2.4 has been removed.
348 Note that glibc is not expected to work with any Linux kernel version
349 before 2.6.
351 * New header <sys/auxv.h> and function getauxval allowing easy access to
352 the AT_* key-value pairs passed from the Linux kernel. The header also
353 defines the HWCAP_* bits associated with the AT_HWCAP key.
355 * New locales: mag_IN
357 * New configure option --enable-systemtap builds SystemTap static probes
358 into libc for setjmp and longjmp and into libpthread for various operations.
359 So far the setjmp/longjmp probes and some of the libpthread probes are
360 provided only for i*86 and x86_64.
361 Implemented by Roland McGrath and Rayson Ho.
363 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
365 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
366 and Will Schmidt.
368 * More optimized functions for SPARC. Implemented by David S. Miller.
370 * Improved support for cross-compilation, especially bootstrap builds
371 without a previously built glibc.
373 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
374 Chris Metcalf from Tilera.
376 * Support for the old ARM ABI has been removed from ports. Only the EABI is
377 now supported for ARM processors.
379 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
380 as the name of the dynamic linker, to distinguish it from the
381 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
383 * Support for CRIS has been removed from ports.
385 * A new class of installed header has been documented for low-level
386 platform-specific functionality. PowerPC added the first instance with a
387 function to provide time base register access. Contributed by Tulio
388 Magno Quites Machado Filho.
390 * ix86 configurations now install header files that are consistent with
391 what x86-64 configurations install. These same header files can be used
392 for -m32, -m64, or -mx32 builds.
393 Contributed by H.J. Lu.
395 * Math library bug fixes. A thorough audit of all open math library bugs was
396 conducted by Joseph Myers. Significant progress was made on many math
397 library bugs resulting in more accurate exceptions and function results.
398 Many thanks to all those that contributed including Andreas Jaeger for his
399 patch review and work on the x87 trigonometric instruction issues.
401 * Timezone data is no longer installed. Timezone-related binaries and scripts
402 will continue to be installed. Users should obtain their timezone data from
403 their distribution provider or from the tzdata package at
404 <ftp://munnari.oz.au/pub/>.
405 \f
406 Version 2.15
408 * The following bugs are resolved with this release:
410 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
411 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
412 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
413 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
414 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
415 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
416 13484, 13506, 13515, 13523, 13524, 13538, 13540
418 * New program pldd to list loaded object of a process
419 Implemented by Ulrich Drepper.
421 * Add nss_db support back to glibc. No more dependency on Berkeley db
422 and support for initgroups lookups.
423 Implemented by Ulrich Drepper.
425 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
426 Contributed by HJ Lu.
428 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
429 Contributed by HJ Lu.
431 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
432 on x86-32 and x86-64.
433 Contributed by Liubov Dmitrieva.
435 * Optimized strchr and strrchr for SSE on x86-32.
436 Contributed by Liubov Dmitrieva.
438 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
439 for x86-64 and x86-32.
440 Contributed by Liubov Dmitrieva.
442 * New interfaces: scandirat, scandirat64
443 Implemented by Ulrich Drepper.
445 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
446 Implemented by Ulrich Drepper.
448 * nscd now also caches the netgroup database.
449 Implemented by Ulrich Drepper.
451 * Integrate libm with gcc's -ffinite-math-only option.
452 Implemented by Ulrich Drepper.
454 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
455 to math functions. Implemented by Ulrich Drepper.
457 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
458 Implemented by Ulrich Drepper.
460 * New Linux interfaces: process_vm_readv, process_vm_writev
462 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
463 Implemented by Ulrich Drepper.
465 * Optimized nearbyint and strcasecmp for PPC.
466 Implemented by Adhemerval Zanella.
468 * New locales: bho_IN, unm_US, es_CU, ta_LK
469 \f
470 Version 2.14
472 * The following bugs are resolved with this release:
474 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
475 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
476 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
477 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
478 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
479 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
480 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
481 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
482 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
483 12795, 12811, 12813, 12814, 12841
485 * The RPC implementation in libc is obsoleted. Old programs keep working
486 but new programs cannot be linked with the routines in libc anymore.
487 Programs in need of RPC functionality must be linked against TI-RPC.
488 The TI-RPC implementation is IPv6 enabled and there are other benefits.
490 Visible changes of this change include (obviously) the inability to link
491 programs using RPC functions without referencing the TI-RPC library and the
492 removal of the RPC headers from the glibc headers.
493 Implemented by Ulrich Drepper.
495 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
496 syncfs, setns, sendmmsg
498 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
499 yue_HK, lij_IT, mhr_RU
501 * New encodings: CP770, CP771, CP772, CP773, CP774
503 * New program sotruss to trace calls through PLTs
504 Implemented by Ulrich Drepper.
506 * The malloc hook implementation is marked deprecated and will be removed
507 from the default implementation in the next version. The design never
508 worked ever since the introduction of threads. Even programs which do
509 not create threads themselves can use multiple threads created internally.
510 \f
511 Version 2.13
513 * The following bugs are resolved with this release:
515 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
516 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
517 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
518 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
519 12378, 12394, 12397
521 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
523 * POWER7 optimizations: memset, memcmp, strncmp
525 * New optimized string functions for x86-64: strnlen (SSE2),
526 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
527 Implemented by Ulrich Drepper.
528 \f
529 Version 2.12
531 * The following bugs are resolved with this release:
533 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
534 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
535 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
536 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
537 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
538 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
539 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
540 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
542 * New interfaces: pthread_getname_np, pthread_setname_np
544 * New Linux interface: recvmmsg
546 * STT_GNU_IFUNC implemented for Sparc by David Miller.
548 * The dynamic linker now recognizes supported ABI versions from the
549 EI_ABIVERSION field in the ELF header.
550 Implemented by Ulrich Drepper.
552 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
553 will not be used to fill in password fields in the passwd.byname replies.
554 Instead it is used to synthesize the shadow.byname table, should it be
555 missing. This is a useful mode in some installations involving Solaris.
556 Implemented by Ulrich Drepper.
558 * New locales: kok_IN, sq_MK, cv_RU
559 \f
560 Version 2.11
562 * The following bugs are resolved with this release:
564 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
565 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
566 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
567 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
568 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
569 10789, 10817, 10823, 10840, 10847
571 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
572 mkostemps64
573 Implemented by Ulrich Drepper.
575 * Checking version of longjmp added that fails if an uninitialized stack
576 frame would be created. Implemented by Ulrich Drepper.
578 * STT_GNU_IFUNC is now supported in static executables.
579 Implemented by H.J. Lu.
581 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
583 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
584 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
585 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
586 Contributed by H.J. Lu.
588 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
589 Implemented by Ulrich Drepper.
591 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
592 strstr, strcasestr.
593 Contributed by H.J. Lu.
595 * Support for fma instruction in AVX on x86-64.
596 Implemented by H.J. Lu and Ulrich Drepper.
598 * AVX support in x86-64 auditing support in ld.so.
599 Implemented by H.J. Lu.
601 * STB_GNU_UNIQUE support added.
602 Implemented by Ulrich Drepper.
604 * Implement second fallback mode for optimized DNS lookup for even more
605 broken environments. If two requests from the same port are not
606 handled correctly close the socket and open a new one before sending
607 the second request. The 'single-request-reopen' option in /etc/resolv.conf
608 can be used to select this mode right away, instead of rediscovering the
609 necessity is every process again.
610 Implemented by Ulrich Drepper.
612 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
613 Implemented by Adam Tkac.
615 * Optimized iconv conversions for S390x.
616 Implemented by Andreas Krebbel.
618 * Using condvars with PI mutexes is now more efficient due to kernel
619 support for requeueing to PI futexes. NPTL support added for x86-64.
620 Implemented by Ulrich Drepper.
622 * New locales: ps_AF, my_MM
623 \f
624 Version 2.10
626 * The following bugs are resolved with this release:
628 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
629 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
630 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
631 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
632 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
634 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
635 Implemented by Ulrich Drepper.
637 * New Linux interfaces: accept4, fallocate, fallocate64.
638 Implemented by Ulrich Drepper.
640 * Correct declarations of string function when used in C++ code. This
641 could lead to compile errors for invalid C++ code.
643 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
644 now in POSIX.
646 * New POSIX 2008 interface: psiginfo
647 Implemented by Ulrich Drepper.
649 * New ISO C++1x interfaces: quick_exit, at_quick_exit
650 Implemented by Ulrich Drepper.
652 * Support for selecting between multiple function definitions at runtime
653 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
655 * The libcrypt library can now use the hash function implementations in
656 NSS. Implemented by Ulrich Drepper.
658 * The malloc implementation can be compiled to be less memory efficient
659 but higher performing in multi-threaded programs.
660 Implemented by Ulrich Drepper.
662 * New locales: nan_TW@latin, ks_IN
664 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
665 Implemented by Ulrich Drepper.
667 * Extended printf hook support. It is possible to use user-defined types
668 and extend existing format specifiers.
669 Implemented by Ulrich Drepper.
671 * Handling for group shadow files has been added.
672 Implemented by Ulrich Drepper.
674 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
675 servers (the case, e.g., for some people using the built-in DNS
676 server in ADSL modems/routers). There is a once-per-process timeout
677 in case of a broken server. To avoid it, users can run nscd or put
678 'options single-request' in /etc/resolv.conf.
679 Implemented by Ulrich Drepper.
680 \f
681 Version 2.9
683 * The following bugs are resolved with this release:
685 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
686 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
687 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
688 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
689 6968, 6974, 6980, 6995, 7008, 7009, 7029
691 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
692 up at the same time. Implemented by Ulrich Drepper.
694 * TLS descriptors for LD and GD on x86 and x86-64.
695 Implemented by Alexandre Oliva.
697 * getaddrinfo now handles DCCP and UDPlite.
698 Implemented by Ulrich Drepper.
700 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
701 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
702 Implemented by Ulrich Drepper.
704 * New implementation of memmem, strstr, and strcasestr which is O(n).
705 Implemented by Eric Blake.
707 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
709 * Implement "e" option for popen to open file descriptor with the
710 close-on-exec flag set. Implemented by Ulrich Drepper.
712 * Implement "b" mode for fmemopen. In this mode writes writes don't
713 implicitly add a NUL byte and seeks from the end of the buffer really
714 use the buffer end, not the string length as the basis.
715 Implemented by Ulrich Drepper.
717 * Many functions, exported and internal, now atomically set the close-on-exec
718 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
720 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
721 Sinhala)
722 Implemented by Pravin Satpute.
724 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
725 \f
726 Version 2.8
728 * The following bugs are resolved with this release:
730 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
731 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
732 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
733 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
734 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
735 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
736 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
738 * New locales: bo_CN, bo_IN, shs_CA.
740 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
742 * Sorting rules for some Indian languages (Devanagari and Gujarati).
743 Implemented by Pravin Satpute.
745 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
747 * nscd caches now all timeouts for DNS entries
748 Implemented by Ulrich Drepper.
750 * nscd is more efficient and wakes up less often.
751 Implemented by Ulrich Drepper.
753 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
754 vdprintf, and obstack_vprintf.
755 Implemented by Jakub Jelinek.
757 * Faster memset for x86-64.
758 Implemented by Harsha Jagasia and H.J. Lu.
760 * Faster memcpy on x86.
761 Implemented by Ulrich Drepper.
763 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
764 Implemented by Ulrich Drepper.
766 * Faster sqrt and sqrtf implemention for some PPC variants.
767 Implemented by Steven Munroe.
768 \f
769 Version 2.7
771 * The following bugs are resolved with this release:
773 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
774 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
775 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
776 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
777 5071, 5103, 5104, 5112, 5113, 5184, 5186
779 * More checking functions: fread, fread_unlocked, open*, mq_open.
780 Implemented by Jakub Jelinek and Ulrich Drepper.
782 * Extend fortification to C++. Implemented by Jakub Jelinek.
784 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
785 by not recognizing 'a' as a modifier when those specs are requested.
786 Implemented by Jakub Jelinek.
788 * PPC optimizations to math and string functions.
789 Implemented by Steven Munroe.
791 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
792 options to be passed. Implemented by Ulrich Drepper.
794 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
796 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
797 Implemented by Ulrich Drepper.
799 * Handle private futexes in the NPTL implementation.
800 Implemented by Jakub Jelinek and Ulrich Drepper.
802 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
803 Implemented by Roland McGrath and Ulrich Drepper.
805 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
807 * SHA-256 and SHA-512 based password encryption.
808 Implemented by Ulrich Drepper.
810 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
811 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
812 yo_NG.
814 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
815 Implemented by Ulrich Drepper.
816 \f
817 Version 2.6
819 * The following bugs are resolved with this release:
821 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
822 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
823 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
824 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
825 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
826 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
827 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
828 4702, 4858
830 * New Linux interfaces: epoll_pwait, sched_getcpu.
832 * New generic interfaces: strerror_l.
834 * nscd can now cache the services database. Implemented by Ulrich Drepper.
835 \f
836 Version 2.5
838 * The following bugs are resolved with this release:
840 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
841 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
842 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
843 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
844 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
845 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
846 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
847 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
848 3225, 3251, 3252, 3253, 3273
850 * For Linux, the sorting of addresses returned by getaddrinfo now also
851 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
852 Implemented by Ulrich Drepper.
854 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
855 Implemented by Ulrich Drepper.
857 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
859 * New iconv module for MIK. Contributed by Alexander Shopov.
861 * For sites with broken group and/or passwd database, the auto-propagate
862 option of nscd can prevent creating ID lookup entries from the results
863 of a name lookup and vice versa. This usually is no problem but some
864 site might have problems with the default behavior.
865 Implemented by Ulrich Drepper.
867 * Iterating over entire database in NIS can be slow. With the
868 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
869 to trade time for memory. The entire database will be read at once.
870 Implemented by Ulrich Drepper.
872 * The interfaces introduced in RFC 3542 have been implemented by
873 Ulrich Drepper.
875 * Support for the new ELF hash table format was added by Ulrich Drepper.
877 * Support for priority inheritance mutexes added by Jakub Jelinek and
878 Ulrich Drepper.
880 * Support for priority protected mutexes added by Jakub Jelinek.
882 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
883 or_IN, csb_PL, fy_NL, sr_ME.
884 \f
885 Version 2.4
887 * More overflow detection functions.
889 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
890 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
892 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
893 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
894 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
895 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
896 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
897 by Masahide Washizawa.
899 * It is now possible to install audit libraries for the dynamic linker using
900 LD_AUDIT. Implemented by Ulrich Drepper.
902 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
903 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
904 For a libc and libpthread that works well on Linux 2.4 kernels, we
905 recommend using the stable 2.3 branch.
907 * The new function open_wmemstream acts like open_memstream,
908 but uses a wchar_t wide character buffer.
910 * The new function ppoll is an improved version of poll, similar to pselect.
912 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
913 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
914 renameat, unlinkat, linkat, symlinkat, readlinkat.
916 * New Linux kernel system calls: unshare,
917 inotify_init, inotify_add_watch, inotify_rm_watch.
919 * The euidaccess function is now also known by the alias eaccess,
920 for compatibility with some other systems.
922 * Timezone data updated to 2006b version.
923 \f
924 Version 2.3.6
926 * The following bugs are resolved with this release:
928 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
929 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
930 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
931 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
932 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
933 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
935 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
937 * As of this release, GCC 4 can be used to compile the C Library.
939 * Timezone data updated to 2005m version.
940 \f
941 Version 2.3.5
943 * The following bugs are resolved with this release:
945 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
946 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
947 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
948 777, 787, 821, 822, 823, 825
950 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
951 \f
952 Version 2.3.4
954 * Support for RFC 3678. Real implementations exist only for Linux so far.
955 Implemented by Ulrich Drepper.
957 * nscd can now cache entries persistently. Expiring entries are reloaded.
958 For speedups the cache can be shared in memory with client processes.
959 Implemented by Ulrich Drepper.
961 * nscd can now perform SELinux checks.
962 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
964 * getaddrinfo queries are now cached. Canonical name lookup is performed
965 efficiently.
966 Implemented by Ulrich Drepper.
968 * The nothrow function attribute is used when headers are used by gcc when
969 compiling C code. This can avoid significant amounts of exception
970 handling data.
972 * The malloc functions perform more error checking and are stricter when
973 it comes to reacting on errors. The default action is to terminate
974 the process after showing an error message. Implemented by Ulrich Drepper.
976 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
977 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
979 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
980 namespaces using the new function dlmopen(). This feature is of course,
981 like most other dynamic loading functionality, not available in statically
982 linked applications. Implemented by Ulrich Drepper.
984 * Low-overhead boundary checking variants of string and some stdio functions
985 were added. These are to be used in conjunction with a gcc patch by
986 Jakub Jelinek which adds calls to these functions if possible.
987 Implemented by Jakub Jelinek and Ulrich Drepper.
989 * Old code for several operating systems and machine architectures that
990 have not been in working condition in a long time have been removed from
991 the main source tree maintained by the GNU C Library's maintainers.
992 These files are now reside in the separate `ports' source module
993 that is usable as an add-on when building the library.
994 \f
995 Version 2.3.3
997 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
998 interrogate the dynamic linker, compatible with the Solaris interface.
1000 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1001 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1003 * getifaddrs now uses the netlink interface on Linux to get its information.
1004 Implemented by Thorsten Kukuk.
1006 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1007 Implemented by Ulrich Drepper.
1009 * support for non-executable stacks on x86 has been added. Changes mostly
1010 by Roland McGrath.
1012 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1013 and Ulrich Drepper.
1015 * getaddrinfo now performs destination address selection according to
1016 RFC 3484.
1017 \f
1018 Version 2.3.2
1020 * Thread-safe interfaces for many functions that access locale data
1021 were added in version 2.3, but these features were omitted from NEWS.
1022 Many functions have variants with an `_l' suffix that take a `locale_t'
1023 object as a parameter rather than consulting the current locale.
1024 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1025 create and maintain `locale_t' objects. Additionally, the new function
1026 `uselocale' sets "the current locale" (as used by functions not so
1027 parameterized) set for an individual thread. These features were added
1028 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1030 * The functions getresuid, getresgid, setresuid, and setresgid, which
1031 have long been available on Linux, are now declared in <unistd.h>
1032 and are now also available on the Hurd.
1034 * ELF thread-local storage support (TLS) now works on x86-64.
1036 * The new dynamic string token $LIB is expanded in shared library names.
1037 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1039 * Aldy Hernandez contributed complete software floating point support for
1040 PowerPC machines with no FPU.
1042 * fexecve is implemented on Linux.
1044 * The `btowc' function should work at least twice as fast due to
1045 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1047 * With approriate thread add-ons cancelable functions are now implemented
1048 in libc.so as well. No need to call the function in libpthread. This
1049 change allowed to finally disable the incorrect and expensive handling
1050 of weak definition in ld.so.
1052 * Yet more PLT entries in libc.so have been removed. We finally arrived
1053 at the bare minimum. Startup times improved appropriately.
1055 * Support for the new Linux/x86 system call interface was added. The
1056 AT_SYSINFO auxiliary vector entry is recognized and handled.
1057 \f
1058 Version 2.3
1060 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1061 charsets.
1063 * iconv (the program and the interface) now accepts empty names (excluding
1064 options like //TRANSLIT) to mean "use charset of current locale".
1066 * localedef can now transliterate characters in strings which are not in
1067 the provided charmap. The information from the input locale is used.
1069 * Prelinking support was added for ELF targets. This requires additional
1070 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1072 * Read-only stdio streams now use mmap to speed up operation by eliminating
1073 copying and buffer underflows. To use add 'm' to the mode string of
1074 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1076 * The malloc functions were completely rewritten by Wolfram Gloger based
1077 on Doug Lea's malloc-2.7.0.c.
1079 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1080 implementation of regex.
1082 * Bruno Haible upgraded the iconv and locale implementation to support
1083 Unicode 3.2.
1085 * Contents of the LC_* and LANG environment variables in the CEN style are
1086 not recognized anymore. It never was used. Change by Ulrich Drepper.
1088 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1089 thread-local storage (TLS) ABI on some platforms.
1090 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1092 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1093 EUC-JISX0213, and TSCII.
1095 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1096 BSD-compatible interface for getting all network interface addresses.
1097 Implementation for IPv4 by Roland McGrath.
1099 * Loading of locale data is faster due to the introduction of a locale
1100 archive. Implemented by Roland McGrath and Ulrich Drepper.
1102 * Startup times are significantly reduced by not using exported functions
1103 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1104 and Ulrich Drepper.
1106 * Steven Munroe contributed a port to PowerPC64/Linux.
1107 \f
1108 Version 2.2.6
1110 * The Hurd now uses the GNU libio implementation of stdio rather than the
1111 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1113 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1114 with the same behavior as the Linux system call of the same name.
1115 \f
1116 Version 2.2.5
1118 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1119 128-bit long double format.
1121 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1122 IBM1161, and IBM1162 charsets.
1124 * Andreas Jaeger contributed a port to x86-64/Linux.
1126 * Peter Bruin contributed a port to PowerPC/Hurd.
1128 * libc functions using I/O streams now can handle wide-oriented streams
1129 as well.
1131 * optimizations in the dynamic linker. Binaries created by recent binutils
1132 versions start up quicker due to reduced time spent on relocations.
1134 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1135 \f
1136 Version 2.2.4
1138 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1139 asinh, atanh, j0 for the 128-bit long double format.
1141 * Bruno Haible updated all the code handling Unicode in some form to
1142 support Unicode 3.1.
1144 * Speed of regex for single-byte locales is back to previous levels.
1145 Patch by Isamu Hasegawa.
1147 * Alpha, SPARC, and IA-64 now also using floating stacks.
1149 * Startup time of internationalized applications greatly improved through
1150 iconv cache. Use iconvconfig to generate the cache file.
1151 Contributed by Ulrich Drepper.
1153 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1154 severe performance problems. Patch by David Mosberger.
1156 * The Hurd port got a lot more functionality like AIO, various stdio
1157 extensions, etc. Mainly done by Roland McGrath.
1159 * mtrace can now lookup symbols in shared libraries.
1160 \f
1161 Version 2.2.3
1163 * Intel's IA-64 math library is largely integrated. It provides fast and
1164 accurate implementatations for most basic and standard math functions
1165 in float, double, and long double format.
1167 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1168 and asin for the 96-bit long double format and asin, log, tan for the
1169 128-bit long double format.
1171 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1172 The basic double functions exist today. Contributed by Abraham Ziv
1173 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1174 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1176 * An asynchronous name lookup library was added. The interface is designed
1177 after POSIX AIO. The proposal was circulated beforehand to get comments.
1178 No negative ones came in. Implemented by Ulrich Drepper.
1180 * Port to S390/64bit contributed by Martin Schwidefsky
1181 <schwidefsky@de.ibm.com>.
1183 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1184 of functions for Linux/IA-64.
1186 * The RPC code is now thread safe. Threads can now use the same service
1187 of different services at the same time. Patch by Eric Norum
1188 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1190 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1191 family of functions for Linux/S390.
1193 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1194 of functions for Linux/x86.
1196 * Port to Linux/CRIS contributed by Axis Communications.
1197 \f
1198 Version 2.2.2
1200 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1201 we can now check for namespace violations and missing declarations. The
1202 result is that almost all headers are now Unix-compliant (as defined in
1203 the upcoming XPG6). The negative side is that some programs might need
1204 corrections, too, if they depend on the incorrect form of the headers in
1205 previous versions which defined too many symbols and included too many
1206 other headers.
1208 * regex now handles multibyte character sets correctly.
1209 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1211 * iconv (the program) does now conform to the upcoming XPG6 and handles
1212 charmaps. Instead of the charset names the path of charmaps can be
1213 provided and the conversion happens based on this data.
1214 Contributed by Ulrich Drepper.
1216 * The locale program now provides detailed information about the installed
1217 locales. While
1219 locale -a
1221 only lists the names of the supported locales
1223 locale -a --verbose
1225 provides details such as country, language, and codeset name.
1226 Contributed by Ulrich Drepper.
1227 \f
1228 Version 2.2.1
1230 * The gencat program now parses the input file according to the charset
1231 selected by the LC_CTYPE category. This is important for stateful
1232 character sets. To make generating catalogs easier there is a way
1233 to overwrite the charset selected by the locale: before the first
1234 message or $ quote line the catalog can contain a line like
1236 $ codeset=ISO-8859-2
1238 to select the charset (ISO-8859-2 in this case).
1240 Implemented by Shinya Hanataka and Ulrich Drepper.
1242 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1243 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1244 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1246 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1247 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1249 * The LANGUAGE environment variable is now ignored unless the locale is
1250 changed from the default "C" locale.
1252 * The usual bug fixes.
1253 \f
1254 Version 2.2
1256 * Greg McGary added runtime support for bounds checking using gcc's
1257 new -fbounded-pointers option. ix86 target is complete. PowerPC
1258 is in progress.
1260 * Thorsten Kukuk added secure mode support to nscd.
1262 * The Berkeley db libraries have been removed.
1264 Related, the nss_db module is now in a separate package since it
1265 obviously requires a database library being available.
1267 * Wide character I/O streams implemented by Ulrich Drepper.
1269 * Functions from the extended socket API added by Ulrich Drepper.
1271 * Functions feenableexcept and fedisableexcept to control the
1272 behaviour of individual exceptions have been added by Andreas Jaeger.
1274 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1276 * The resolver code has been updated from bind 8.2.3-T5B which supports
1277 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1278 and Mark Kettenis.
1280 This change could in some situations effect backward compatibility. Since
1281 now `_res' is a thread-local instead of a global variable, modifying it
1282 in one thread does not have any effect in other threads.
1284 The resolver library was also extended to allow IPv6 as the transport
1285 protocol for the requests. This work was done by Stig Venaas.
1287 * Compatibility code for K&R C compilers has been removed from the
1288 header files. A ISO C compiler is needed to use the library
1289 (conforming to either C89 or C99 standard).
1291 * Complete rewrite of the localedef program to support multibyte character
1292 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1293 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1294 Implemented by Ulrich Drepper.
1296 Bruno Haible significantly improved the generation and use of the data
1297 structures for the wide character tables.
1299 * Plural handling in gettext implemented by Ulrich Drepper.
1301 * The utmp daemon has been removed.
1303 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1305 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1306 and Yutaka Niibe.
1308 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1310 * POSIX barriers implemented by Kaz Kylheku.
1312 * POSIX spawn function family implemented by Ulrich Drepper.
1314 * POSIX spinlocks are now available.
1316 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1318 * the configure option --enable-kernel=X.Y.Z allows to strip out
1319 compatibility for kernel versions before X.Y.Z. This is currently only
1320 implemented for Linux.
1322 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1323 field sin6_scope_id. This means that all programs using IPv6 should be
1324 recompiled. Don't expect binary compatibility with previous glibc
1325 versions.
1327 * various conversion modules for IBM character sets contributed by
1328 Masahide Washizawa.
1330 * IA-64 port by Jes Sorensen and HJ Lu.
1331 \f
1332 Version 2.1.3
1334 * bug fixes
1336 \f
1337 Version 2.1.2
1339 * bug fixes
1341 \f
1342 Version 2.1.1
1344 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1346 * New xdr functions are added; some rpc functions are now 64bit clean.
1348 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1350 * Fixed known incompatibilities with glibc 2.0.
1352 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1354 * Optimized a number of functions (especially the ELF dynamic loader).
1356 * Update timezone data files.
1358 * lots of charmaps corrections
1360 * some new locale definitions and charmaps
1362 \f
1363 Version 2.1
1365 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1366 conform to POSIX member type requirements. Symbol versions have been
1367 adjusted as needed within the library, and for direct use by applications,
1368 but there is potential for problems if third-party libraries use
1369 struct timeval as part of their interface. This does not present
1370 a problem for X and other "essential" system libraries.
1372 * An additional locale model to support C++ Standard Library locale
1373 model and probably more was implemented by Ulrich Drepper.
1375 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1376 symbol level.
1378 * Miles Bader provided the `argp' function family to support hierachical
1379 command line argument parsing, layered on top of getopt.
1381 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1383 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1384 numbers.
1386 * scanf recognizes the %a and %A format for scanning floating point numbers.
1388 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1389 information and interfaces for the available integer types.
1391 * about 130 new math functions were added to implement the ISO C9x math
1392 library.
1394 * the new header <complex.h> contains definitions of the complex math
1395 functions from ISO C 9X.
1397 * the new header <tgmath.h> defines generic macros to use complex or
1398 real valued functions.
1400 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1402 * Andreas Jaeger provided a test suite for the math library.
1404 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1406 * Ulrich Drepper added character set conversion functions (iconv).
1408 * Optimized string functions have been added.
1410 * The localedata addon is now part of glibc.
1412 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1414 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1415 daemon for NSS (nscd).
1417 Missing a better place here are some numbers on improvements. Under
1418 Linux 2.1.125 un-tar-ing the kernel sources takes
1420 user system wall
1422 using local files 12.19s 6.88s 22.91s
1424 using NIS 13.92s 8.91s 26.34s
1426 using NIS & nscd 10.37s 7.34s 25.30s
1428 using NIS+ 27.57s 30.37s 640.46s
1430 using NIS+ & nscd 10.25s 7.83s 26.51s
1432 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1434 Keep in mind that non-namelookup related operations dominate above times.
1435 It was just a common complain that using NIS+ unpacking the kernel is
1436 horribly slow.
1438 [1] The old nscd implementation is not available anymore since it was
1439 distributed with glibc up to version 2.0.98 and thus is now replaced.
1441 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1443 * Mark Kettenis provided a Hesiod NSS module.
1445 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1446 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1448 * rcmd can now handle netgroups (Dick Streefland).
1450 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1451 Bambrough.
1453 * Support for the IPv6 protocol has been added to the socket API, as per the
1454 latest draft standards.
1456 * Support for Linux 2.2 has been added.
1458 * Interface changes relative to the latest 2.0.x release:
1459 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1460 addseverity NEW: Unix98
1461 alphasort64 NEW: LFS
1462 argp_err_exit_status NEW: argp, GNU ext
1463 argp_error NEW: argp, GNU ext
1464 argp_failure NEW: argp, GNU ext
1465 argp_help NEW: argp, GNU ext
1466 argp_parse NEW: argp, GNU ext
1467 argp_program_bug_address NEW: argp, GNU ext
1468 argp_program_version NEW: argp, GNU ext
1469 argp_program_version_hook NEW: argp, GNU ext
1470 argp_state_help NEW: argp, GNU ext
1471 argp_usage NEW: argp, GNU ext
1472 authdes_create NEW: Secure RPC
1473 authdes_getucred NEW: Secure RPC
1474 authdes_pk_create NEW: Secure RPC
1475 backtrace NEW: GNU ext.
1476 backtrace_symbols NEW: GNU ext.
1477 backtrace_symbols_fd NEW: GNU ext.
1478 cacos NEW: ISO C 9x
1479 cacosf NEW: ISO C 9x
1480 cacosh NEW: ISO C 9x
1481 cacoshf NEW: ISO C 9x
1482 cacoshl NEW: ISO C 9x
1483 cacosl NEW: ISO C 9x
1484 capget NEW: kernel
1485 capset NEW: kernel
1486 carg NEW: ISO C 9x
1487 cargf NEW: ISO C 9x
1488 cargl NEW: ISO C 9x
1489 casin NEW: ISO C 9x
1490 casinf NEW: ISO C 9x
1491 casinh NEW: ISO C 9x
1492 casinhf NEW: ISO C 9x
1493 casinhl NEW: ISO C 9x
1494 casinl NEW: ISO C 9x
1495 catan NEW: ISO C 9x
1496 catanf NEW: ISO C 9x
1497 catanh NEW: ISO C 9x
1498 catanhf NEW: ISO C 9x
1499 catanhl NEW: ISO C 9x
1500 catanl NEW: ISO C 9x
1501 cbc_crypt NEW: Secure RPC
1502 ccos NEW: ISO C 9x
1503 ccosf NEW: ISO C 9x
1504 ccosh NEW: ISO C 9x
1505 ccoshf NEW: ISO C 9x
1506 ccoshl NEW: ISO C 9x
1507 ccosl NEW: ISO C 9x
1508 cexp NEW: ISO C 9x
1509 cexpf NEW: ISO C 9x
1510 cexpl NEW: ISO C 9x
1511 cimag NEW: ISO C 9x
1512 cimagf NEW: ISO C 9x
1513 cimagl NEW: ISO C 9x
1514 clearerr_locked REMOVED
1515 clntunix_create NEW: sunrpc ext
1516 clog NEW: ISO C 9x
1517 clog10 NEW: ISO C 9x
1518 clog10f NEW: ISO C 9x
1519 clog10l NEW: ISO C 9x
1520 clogf NEW: ISO C 9x
1521 clogl NEW: ISO C 9x
1522 conj NEW: ISO C 9x
1523 conjf NEW: ISO C 9x
1524 conjl NEW: ISO C 9x
1525 cpow NEW: ISO C 9x
1526 cpowf NEW: ISO C 9x
1527 cpowl NEW: ISO C 9x
1528 cproj NEW: ISO C 9x
1529 cprojf NEW: ISO C 9x
1530 cprojl NEW: ISO C 9x
1531 creal NEW: ISO C 9x
1532 crealf NEW: ISO C 9x
1533 creall NEW: ISO C 9x
1534 creat64 NEW: LFS
1535 csin NEW: ISO C 9x
1536 csinf NEW: ISO C 9x
1537 csinh NEW: ISO C 9x
1538 csinhf NEW: ISO C 9x
1539 csinhl NEW: ISO C 9x
1540 csinl NEW: ISO C 9x
1541 csqrt NEW: ISO C 9x
1542 csqrtf NEW: ISO C 9x
1543 csqrtl NEW: ISO C 9x
1544 ctan NEW: ISO C 9x
1545 ctanf NEW: ISO C 9x
1546 ctanh NEW: ISO C 9x
1547 ctanhf NEW: ISO C 9x
1548 ctanhl NEW: ISO C 9x
1549 ctanl NEW: ISO C 9x
1550 des_setparity NEW: Secure RPC
1551 ecb_crypt NEW: Secure RPC
1552 endutxent NEW: Unix98
1553 exp10 NEW: ISO C 9x
1554 exp10f NEW: ISO C 9x
1555 exp10l NEW: ISO C 9x
1556 exp2 NEW: ISO C 9x
1557 exp2f NEW: ISO C 9x
1558 exp2l NEW: ISO C 9x
1559 fattach NEW: STREAMS
1560 fdetach NEW: STREAMS
1561 fdim NEW: ISO C 9x
1562 fdimf NEW: ISO C 9x
1563 fdiml NEW: ISO C 9x
1564 feclearexcept NEW: ISO C 9x
1565 fegetenv NEW: ISO C 9x
1566 fegetexceptflag NEW: ISO C 9x
1567 fegetround NEW: ISO C 9x
1568 feholdexcept NEW: ISO C 9x
1569 feof_locked REMOVED
1570 feraiseexcept NEW: ISO C 9x
1571 ferror_locked REMOVED
1572 fesetenv NEW: ISO C 9x
1573 fesetexceptflag NEW: ISO C 9x
1574 fesetround NEW: ISO C 9x
1575 fetestexcept NEW: ISO C 9x
1576 feupdateenv NEW: ISO C 9x
1577 fflush_locked REMOVED
1578 ffsl NEW: GNU ext.
1579 ffsll NEW: GNU ext.
1580 fgetpos64 NEW: LFS
1581 fgets_unlocked NEW: GNU ext.
1582 fileno_locked REMOVED
1583 fma NEW: ISO C 9x
1584 fmaf NEW: ISO C 9x
1585 fmal NEW: ISO C 9x
1586 fmax NEW: ISO C 9x
1587 fmaxf NEW: ISO C 9x
1588 fmaxl NEW: ISO C 9x
1589 fmin NEW: ISO C 9x
1590 fminf NEW: ISO C 9x
1591 fminl NEW: ISO C 9x
1592 fmtmsg NEW: Unix98
1593 fopen64 NEW: LFS
1594 fputc_locked REMOVED
1595 fputs_unlocked NEW: GNU ext.
1596 fread_unlocked NEW: GNU ext.
1597 freopen64 NEW: LFS
1598 fseeko NEW: Unix98
1599 fsetpos64 NEW: LFS
1600 fstatfs64 NEW: LFS
1601 fstatvfs NEW: Unix98
1602 fstatvfs64 NEW: LFS
1603 ftello NEW: Unix98
1604 ftello64 NEW: LFS
1605 ftruncate64 NEW: LFS
1606 ftw64 NEW: LFS
1607 fwrite_unlocked NEW: GNU ext.
1608 gai_strerror NEW: IPv6
1609 gamma_r REMOVED
1610 gammaf_r REMOVED
1611 gammal_r REMOVED
1612 getchar_locked REMOVED
1613 getdate NEW: Unix98
1614 getdate_err NEW: Unix98
1615 getdate_r NEW: GNU ext.
1616 getmsg NEW: STREAMS
1617 getnameinfo NEW: IPv6
1618 getnetname NEW: Secure RPC
1619 getpmsg NEW: STREAMS
1620 getpt NEW: Unix98 PTY
1621 getrlimit64 NEW: LFS
1622 getutxent NEW: Unix98
1623 getutxid NEW: Unix98
1624 getutxline NEW: Unix98
1625 glob64 NEW: GNU ext.
1626 globfree64 NEW: GNU ext.
1627 gnu_get_libc_release NEW: GNU ext.
1628 gnu_get_libc_version NEW: GNU ext.
1629 grantpt NEW: Unix98 PTY
1630 host2netname NEW: Secure RPC
1631 iconv NEW: iconv
1632 iconv_close NEW: iconv
1633 iconv_open NEW: iconv
1634 if_freenameindex NEW: IPv6
1635 if_indextoname NEW: IPv6
1636 if_nameindex NEW: IPv6
1637 if_nametoindex NEW: IPv6
1638 in6addr_any NEW: IPv6
1639 in6addr_loopback NEW: IPv6
1640 inet6_isipv4mapped NEW: IPv6
1641 isastream NEW: STREAMS
1642 iswblank NEW: GNU ext.
1643 key_decryptsession NEW: Secure RPC
1644 key_decryptsession_pk NEW: Secure RPC
1645 key_encryptsession NEW: Secure RPC
1646 key_encryptsession_pk NEW: Secure RPC
1647 key_gendes NEW: Secure RPC
1648 key_get_conv NEW: Secure RPC
1649 key_secretkey_is_set NEW: Secure RPC
1650 key_setnet NEW: Secure RPC
1651 key_setsecret NEW: Secure RPC
1652 llrint NEW: ISO C 9x
1653 llrintf NEW: ISO C 9x
1654 llrintl NEW: ISO C 9x
1655 llround NEW: ISO C 9x
1656 llroundf NEW: ISO C 9x
1657 llroundl NEW: ISO C 9x
1658 log2 NEW: ISO C 9x
1659 log2f NEW: ISO C 9x
1660 log2l NEW: ISO C 9x
1661 lrint NEW: ISO C 9x
1662 lrintf NEW: ISO C 9x
1663 lrintl NEW: ISO C 9x
1664 lround NEW: ISO C 9x
1665 lroundf NEW: ISO C 9x
1666 lroundl NEW: ISO C 9x
1667 lseek64 NEW: LFS
1668 makecontext NEW: Unix98
1669 mempcpy NEW: GNU ext.
1670 mmap64 NEW: LFS
1671 moncontrol REMOVED
1672 modify_ldt NEW: kernel
1673 nan NEW: ISO C 9x
1674 nanf NEW: ISO C 9x
1675 nanl NEW: ISO C 9x
1676 nearbyint NEW: ISO C 9x
1677 nearbyintf NEW: ISO C 9x
1678 nearbyintl NEW: ISO C 9x
1679 netname2host NEW: Secure RPC
1680 netname2user NEW: Secure RPC
1681 nexttoward NEW: ISO C 9x
1682 nexttowardf NEW: ISO C 9x
1683 nexttowardl NEW: ISO C 9x
1684 nftw NEW: Unix98
1685 nftw64 NEW: LFS
1686 open64 NEW: LFS
1687 passwd2des NEW: Secure RPC
1688 pow10 NEW: GNU ext.
1689 pow10f NEW: GNU ext.
1690 pow10l NEW: GNU ext.
1691 pread NEW: Unix98
1692 pread64 NEW: LFS
1693 printf_size NEW: GNU ext.
1694 printf_size_info NEW: GNU ext.
1695 profil_counter REMOVED
1696 pthread_mutexattr_getkind_np REPLACED
1697 pthread_mutexattr_setkind_np REPLACED
1698 ptsname NEW: Unix98 PTY
1699 ptsname_r NEW: Unix98 PTY
1700 putc_locked REMOVED
1701 putchar_locked REMOVED
1702 putgrent NEW: GNU ext.
1703 putmsg NEW: STREAMS
1704 putpmsg NEW: STREAMS
1705 pututxline NEW: Unix98
1706 pwrite NEW: Unix98
1707 pwrite64 NEW: LFS
1708 readdir64 NEW: LFS
1709 readdir64_r NEW: LFS
1710 remquo NEW: ISO C 9x
1711 remquof NEW: ISO C 9x
1712 remquol NEW: ISO C 9x
1713 round NEW: ISO C 9x
1714 roundf NEW: ISO C 9x
1715 roundl NEW: ISO C 9x
1716 rtime NEW: GNU ext.
1717 scalbln NEW: ISO C 9x
1718 scalblnf NEW: ISO C 9x
1719 scalblnl NEW: ISO C 9x
1720 scandir64 NEW: LFS
1721 sendfile NEW: kernel
1722 setcontext NEW: Unix98
1723 setrlimit64 NEW: LFS
1724 setutxent NEW: Unix98
1725 sighold NEW: Unix98
1726 sigignore NEW: Unix98
1727 sigqueue NEW: POSIX.1b
1728 sigrelse NEW: Unix98
1729 sigset NEW: POSIX.1b
1730 sigtimedwait NEW: POSIX.1b
1731 sigwaitinfo NEW: POSIX.1b
1732 sincos NEW: GNU ext.
1733 sincosf NEW: GNU ext.
1734 sincosl NEW: GNU ext.
1735 statfs64 NEW: LFS
1736 statvfs NEW: Unix98
1737 statvfs64 NEW: LFS
1738 strcasestr NEW: GNU ext.
1739 strtoimax NEW: ISO C 9x
1740 strtoumax NEW: ISO C 9x
1741 strverscmp NEW: GNU ext.
1742 svcauthdes_stats NEW: Secure RPC
1743 svcunix_create NEW: sunrpc etx
1744 svcunixfd_create NEW: sunrpc ext
1745 swapcontext NEW: Unix98
1746 tcgetsid NEW: Unix98 PTY
1747 tdestroy NEW: GNU ext.
1748 tgamma NEW: ISO C 9x
1749 tgammaf NEW: ISO C 9x
1750 tgammal NEW: ISO C 9x
1751 tmpfile64 NEW: LFS
1752 trunc NEW: ISO C 9x
1753 truncate64 NEW: LFS
1754 truncf NEW: ISO C 9x
1755 truncl NEW: ISO C 9x
1756 umount2 NEW: kernel
1757 unlockpt NEW: Unix98 PTY
1758 updwtmpx NEW: Unix98
1759 user2netname NEW: Secure RPC
1760 utmpxname NEW: Unix98
1761 versionsort NEW: GNU ext.
1762 versionsort64 NEW: GNU ext.
1763 waitid NEW: Unix98
1764 wcscasecmp NEW: GNU ext.
1765 wcsncasecmp NEW: GNU ext.
1766 wcsnlen NEW: GNU ext.
1767 wcstoimax NEW: ISO C 9x
1768 wcstoll NEW: ISO C 9x
1769 wcstoull NEW: ISO C 9x
1770 wcstoumax NEW: ISO C 9x
1771 wcswcs NEW: Unix98
1772 wordexp NEW: POSIX.2
1773 wordfree NEW: POSIX.2
1774 write_profiling REMOVED
1775 xdecrypt NEW: Secure RPC
1776 xdr_authdes_cred NEW: Secure RPC
1777 xdr_authdes_verf NEW: Secure RPC
1778 xdr_cryptkeyarg NEW: Secure RPC
1779 xdr_cryptkeyarg2 NEW: Secure RPC
1780 xdr_cryptkeyres NEW: Secure RPC
1781 xdr_getcredres NEW: Secure RPC
1782 xdr_key_netstarg NEW: Secure RPC
1783 xdr_key_netstres NEW: Secure RPC
1784 xdr_keybuf NEW: Secure RPC
1785 xdr_keystatus NEW: Secure RPC
1786 xdr_netnamestr NEW: Secure RPC
1787 xdr_sizeof NEW: Secure RPC
1788 xdr_unixcred NEW: sunrpc ext
1789 xencrypt NEW: Secure RPC
1790 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1791 \f
1792 Version 2.0.6
1794 * more bug fixes
1796 \f
1797 Version 2.0.5
1799 * more bug fixes
1801 * inet_ntoa is thread-safe
1803 * updwtmp is moved from libutil to libc
1805 * rewrite of cbrt function
1807 * update of timezone data
1808 \f
1809 Version 2.0.4
1811 * more bug fixes
1812 \f
1813 Version 2.0.3
1815 * more bug fixes
1816 \f
1817 Version 2.0.2
1819 * more bug fixes
1821 * add atoll function
1823 * fix complex problems in Berkeley DB code
1825 * fix math functions
1826 \f
1827 Version 2.0.1
1829 * fixed lots of header problems (especially Linux/GNU specific)
1831 * dynamic loader preserves all registers
1833 * Roland McGrath provided support for handling of auxiliary objects in
1834 the ELF dynamic loader.
1836 * support for parallel builds is improved
1837 \f
1838 Version 2.0
1840 * GNU extensions are no longer declared by default. To enable them you
1841 must define the macro `_GNU_SOURCE' in your program or compile with
1842 `-D_GNU_SOURCE'.
1844 * The library has changed from using GNU ld symbol aliases to using weak
1845 symbols where available. The ELF object file format supports weak
1846 symbols; GNU ld also supports weak symbols in the a.out format. (There
1847 is also now support for other GNU ld extensions in ELF. Use the
1848 `--with-elf' option to configure to indicate you have ELF, and
1849 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1850 of many files which contained only symbol aliases, reducing the size of
1851 the source and the compiled library; many other files were renamed to
1852 less cryptic names previously occupied by the symbol alias files.
1853 There is a new header file <elf.h> for programs which operate on
1854 files in the ELF format.
1856 * Converted to Autoconf version 2, so `configure' has more options.
1857 Run `configure --help' to see the details.
1859 * The library can now be configured to build profiling, highly-optimized
1860 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1861 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1862 `configure' enable building these extra libraries. The shared library is
1863 built by default when using both ELF and GNU ld. When shared libraries
1864 are enabled, the new library `-ldl' is available for arbitrary run-time
1865 loading of shared objects; its interface is defined in <dlfcn.h>. The
1866 new header file <link.h> gives access to the internals of the run-time
1867 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1868 application of same name on other systems and it provides information
1869 about dynamically linked binaries.
1871 * The C library now provides the run-time support code for profiling
1872 executables compiled with `-pg'. Programs can control the profiling code
1873 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1874 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1875 the support for this file format was contributed by David Mosberger-Tang.
1877 * The math code has been replaced with a math library based on fdlibm from
1878 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1879 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1880 functions. The math functions now reside in a separate library, so
1881 programs using them will need to use `-lm' their linking commands.
1883 * John C. Bowman contributed optimized ix87 assembler inline functions.
1885 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1886 mechanism similar to that found in Solaris 2. This is now used for the
1887 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1888 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1889 file controls what services are used for each individual database. This
1890 works by loading shared libraries with names specified in `nsswitch.conf',
1891 so service modules can be changed or added at any time without even
1892 relinking any program. Currently there are the file, db, and NIS based
1893 NSS services available.
1895 * The new functions `strtoq' and `strtouq' parse integer values from
1896 strings, like `strtol' and `strtoul', but they return `long long int' and
1897 `unsigned long long int' values, respectively (64-bit quantities).
1899 * The new functions `strtof' and `strtold' parse floating-point values from
1900 strings, like `strtod', but they return `float' and `long double' values,
1901 respectively (on some machines `double' and `long double' are the same).
1903 * Ulrich Drepper has contributed new implementations of the floating-point
1904 printing and reading code used in the `printf' family of functions and
1905 `strtod', `strtof', and `strtold'. These new functions are perfectly
1906 accurate, and much faster than the old ones.
1908 * The implementation of the POSIX locale model was completely rewritten by
1909 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1910 to compile the POSIX locale definition.
1912 * The former dummy implementations of the strcoll and strxfrm function are
1913 now replaced by fully functional code contributed by Ulrich Drepper. The
1914 collation information comes from the POSIX locale definitions.
1916 * The new header <langinfo.h> defines an interface for accessing
1917 various locale-dependent data (using the locale chosen with `setlocale').
1919 * Ulrich Drepper has contributed a new suite of functions for operation on
1920 wide-character and multibyte-character strings, in <wchar.h>;
1921 and classification and case conversion of wide characters, in <wctype.h>.
1922 These new functions are conforming to the ISO C, Amendement 1 specification.
1924 * There is now a second implementation of the standard I/O library available.
1925 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1926 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1928 * You can now use positional parameter specifications in format strings
1929 for the `printf' and `scanf' families of functions. For example,
1930 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1931 ``Number 6, Mr Jones''. This is mainly useful when providing different
1932 format strings for different languages, whose grammars may dictate
1933 different orderings of the values being printed. To support this
1934 feature, the interface for `register_printf_handler' has changed; see
1935 the header file <printf.h> for details.
1937 * The `printf' and `scanf' families of functions now understand a new
1938 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1939 to group numbers as indicated by the locale; for `scanf' and friends, this
1940 says to accept as valid only a number with all the proper grouping
1941 separators in the right places. In the default "C" locale, numbers are
1942 not grouped; but locales for specific countries will define the usual
1943 conventions (i.e. separate thousands with `,' in the US locale).
1945 * The pgrp functions have been regularized, slightly incompatibly but much
1946 less confusingly. The core functions are now `getpgid' and `setpgid',
1947 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1948 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1949 provided for compatibility. There is no longer an incompatible `getpgrp'
1950 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1952 * The new header file <fts.h> and suite of functions simplify programs that
1953 operate on directory trees. This code comes from 4.4 BSD.
1955 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1956 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1957 NSS scheme used in glibc.
1959 * There is a new malloc debugging hook `__memalign_hook'.
1961 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1962 `unsigned int' in <sys/types.h>. These are for compatibility only and
1963 their use is discouraged.
1965 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1966 done differently, so that it works even without GNU ld.
1968 * New function `euidaccess' checks allowed access to a file like `access',
1969 but using the effective IDs instead of the real IDs.
1971 * The time zone data files have been updated for the latest and greatest
1972 local time conventions of the countries of the world.
1974 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1975 see <dirent.h>.
1977 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1978 for formatting floating-point numbers. They are provided only for
1979 compatibility; new programs should use `sprintf' instead. There are
1980 also equivalent function for the `long double' floating-point type and
1981 all functions also exist in a reentrant form.
1983 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1984 functions for maintaining the login-record files (primarily of use to
1985 system programs such as `login'), and convenient functions for
1986 allocating and initializing a pseudo-terminal (pty) device.
1988 * Ulrich Drepper has contributed new support for System V style
1989 shared memory and IPC on systems that support it.
1991 * Ulrich Drepper has contributed several miscellaneous new functions found
1992 in System V: The `hsearch' family of functions provide an effective
1993 implementation of hash tables; `a64l' and `l64a' provide a very simple
1994 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1995 number generator.
1997 * Ulrich Drepper has contributed new reentrant counterparts for the
1998 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2000 * Ulrich Drepper has contributed new, highly-optimized versions of several
2001 string functions for the i486/Pentium family of processors.
2003 * Ulrich Drepper has updated the Linux-specific code, based largely
2004 on work done in Hongjiu Lu's version of GNU libc for Linux.
2005 The GNU library now supports Linux versions 2.0.10 and later,
2006 using the ELF object file format (i[3456]86-*-linux).
2008 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2010 * David Mosberger-Tang and Richard Henderson have ported the C library
2011 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2012 dynamic linking support for ELF/Alpha.
2014 * Richard Henderson contributed several Alpha optimized assembler function
2015 for arithmetic and string handling.
2017 * Ulrich Drepper has contributed a new set of message catalog functions to
2018 support multiple languages using the <libintl.h> interface, for use with
2019 his new package GNU gettext. Translation volunteers have contributed
2020 catalogs of the library's messages in Spanish, German, and Korean.
2022 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2023 program and the `catgets' function for reading the catalog files it
2024 creates. (The <libintl.h> interface is preferred; we include the
2025 <nl_types.h> interface using `catgets' only for source compatibility with
2026 programs already written to use it.)
2028 * New header file <values.h> gives SVID-compatible names for <limits.h>
2029 constants.
2031 * Various new macros, declarations, and small header files for compatibility
2032 with 4.4 BSD.
2034 * New function `group_member' is a convenient way to check if a process has
2035 a given effective group ID.
2037 * When using GCC 2.7 and later, the socket functions are now declared in a
2038 special way so that passing an argument of type `struct sockaddr_in *',
2039 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2040 `struct sockaddr *' type, does not generate a type-clash warning.
2042 * New function `error' declared in header file <error.h> is a convenient
2043 function for printing error messages and optionally exiting; this is the
2044 canonical function used in GNU programs. The new functions `err', `warn',
2045 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2046 doing the same thing.
2048 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2049 POSIX.2 `glob' function to do ~ and {...} expansion.
2051 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2052 `clearenv' which is used in POSIX.9 is also available.
2054 * New function `getsid' returns session ID number on systems that support it.
2056 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2057 files <db.h> and <mpool.h> provide a rich set of functions for several
2058 types of simple databases stored in memory and in files, and <ndbm.h> is
2059 an old `ndbm'-compatible interface using the `db' functions. Link with
2060 `-ldb' to get these functions.
2062 * New macro `strdupa' copies a string like `strdup', but uses local stack
2063 space from `alloca' instead of dynamic heap space from `malloc'.
2065 * New function `strnlen' is like `strlen' but searches only a given maximum
2066 number of characters for the null terminator. `stpncpy', `strndup' and
2067 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2068 function.
2070 * New function `statfs' in header <sys/statfs.h>.
2072 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2073 provide convenient functions for operating on blocks of null-terminated
2074 strings.
2076 * A new suite of functions in <utmp.h> handle all the details of reading
2077 and writing the utmp file.
2079 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2080 Thorsten Kukuk.
2082 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2083 completely POSIX compliant and also implemented the extended functionality
2084 to handle alternate digit representation and alternate era date formats.
2086 * Ulrich Drepper provided an implementation of the `strptime' function
2087 defined in XPG4.2 which transforms a string into a `struct tm' value.
2089 * Paul Eggert provided the tzselect shell script as part of the timezone
2090 code. The shell script makes it easy to select the correct timezone
2091 specification.
2093 * The implementation of the malloc family of functions is completely replaced
2094 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2095 The implementation uses the mmap function (if available) and it is
2096 optimized for the use in multi threaded programs.
2098 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2099 functions. This new functionality is usable by specifying a special
2100 salt string and it is compatible with implementation on *BSD systems.
2102 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2103 `getsubopt' to handle second level command line options, `bsd_signal'
2104 to access BSD style `signal' functionality, the obsolete `regexp' style
2105 expression matcher.
2107 * the `lchown' function is available on system which support this
2108 functionality.
2110 * The implementation of the shadow password handling function was contributed
2111 by Ulrich Drepper.
2113 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2115 * POSIX.1g support was added. The <sys/select.h> header is available,
2116 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2117 implementation of `getaddrinfo'.
2118 \f
2119 Version 1.09
2121 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2123 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2124 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2126 * The new function `daemon' from 4.4 BSD is useful for server programs that
2127 want to put themselves in the background.
2129 * Joel Sherrill has contributed support for several standalone boards that
2130 run without an operating system.
2132 * `printf', `scanf' and friends now accept a `q' type modifier for long
2133 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2135 * All of the code taken from BSD (notably most of the math and networking
2136 routines) has been updated from the BSD 4.4-Lite release.
2138 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2140 * The new functions `getdomainname' and `setdomainname' fetch or change the
2141 YP/NIS domain name. These are system calls which exist on systems which
2142 have YP (aka NIS).
2144 * The time zone data files have been updated for the latest international
2145 conventions.
2147 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2148 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2149 \f
2150 Version 1.08
2152 * The C library now includes support for Sun RPC, from Sun's free
2153 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2154 are included. (There is still no support for YP.)
2156 * Tom Quinn has contributed a port of the C library to SGI machines running
2157 Irix 4 (mips-sgi-irix4).
2159 * The new `lockf' function is a simplified interface to the locking
2160 facilities of `fcntl', included for compatibility.
2162 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2164 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2166 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2167 compatibility.
2169 * The error message printed by `assert' for a failed assertion now includes
2170 the name of the program (if using GNU ld) and the name of the calling
2171 function (with versions of GCC that support this).
2173 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2175 * The library now includes the <sys/mman.h> header file and memory
2176 management functions `mmap', `munmap', `mprotect', `msync', and
2177 `madvise', on systems that support those facilities.
2179 * The interface for `mcheck' has changed slightly: the function called to
2180 abort the program when an allocation inconsistency is detected now takes
2181 an argument that indicates the type of failure. The new function
2182 `mprobe' lets you request a consistency check for a particular block at
2183 any time (checks are normally done only when you call `free' or `realloc'
2184 on a block).
2186 * It is now possible to easily cross-compile the C library, building on one
2187 system a library to run on another machine and/or operating system. All
2188 you need to do is set the variable `HOST_CC' in `configparms' to the
2189 native compiler for programs to run on the machine you are building on (a
2190 few generator programs are used on Unix systems); set `CC' to the
2191 cross-compiler.
2193 * The new function `fexecve' (only implemented on the GNU system) executes
2194 a program file given a file descriptor already open on the file.
2195 \f
2196 Version 1.07
2198 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2199 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2201 * You can set the variable `libprefix' in `configparms' to specify a prefix
2202 to be prepended to installed library files; this makes it easy to install
2203 the GNU C library to be linked as `-lgnuc' or whatever.
2205 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2206 copies a limited number of characters from a string, and returns the
2207 address of the last character written.
2209 * You no longer need to check for whether the installed `stddef.h' is
2210 compatible with the GNU C library. configure now checks for you.
2212 * You can now define a per-stream `fileno' function to convert the
2213 stream's cookie into an integral file descriptor.
2215 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2216 allocates zero bytes of storage, and returns a unique pointer which
2217 you can pass to `realloc' or `free'. The behavior is undefined if
2218 you dereference this pointer.
2220 * The C library now runs on Sony NEWS m68k machines running either
2221 NewsOS 3 or NewsOS 4.
2223 * The new `syscall' function is a system-dependent primitive function
2224 for invoking system calls. It has the canonical behavior on Unix
2225 systems, including unreliable return values for some calls (such as
2226 `pipe', `fork' and `getppid').
2228 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2229 to `EAGAIN', which is the preferred name. On systems whose kernels
2230 use two distinct codes, the C library now translates EWOULDBLOCK to
2231 EAGAIN in every system call function.
2232 \f
2233 Version 1.06
2235 * The GNU C Library Reference Manual is now distributed with the library.
2236 `make dvi' will produce a DVI file of the printed manual.
2237 `make info' will produce Info files that you can read on line using C-h i
2238 in Emacs or the `info' program.
2239 Please send comments on the manual to bug-glibc-manual@gnu.org.
2241 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2243 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2245 * Jason Merrill has contributed a port to the Sequent Symmetry running
2246 Dynix version 3 (i386-sequent-dynix).
2248 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2249 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2251 * New function `memory_warnings' lets you arrange to get warnings when
2252 malloc is running out of memory to allocate, like Emacs gives you.
2254 * The C library now contains the relocating allocator used in Emacs 19 for
2255 its editing buffers. This allocator (ralloc) minimizes allocation
2256 overhead and fragmentation by moving allocated regions around whenever it
2257 needs to. You always refer to a ralloc'd region with a "handle" (a
2258 pointer to a pointer--an object of type `void **').
2260 * There is a new `printf' format: `%m' gives you the string corresponding
2261 to the error code in `errno'.
2263 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2264 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2265 pass, the `a' modifier says to fill in a `char **' you pass with a
2266 malloc'd string.
2268 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2269 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2270 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2272 * `mkstemp' is a traditional Unix function to atomically create and open a
2273 uniquely-named temporary file.
2274 \f
2275 Version 1.05
2277 * The standard location for the file that says what the local timezone is
2278 has changed again. It is now `/usr/local/etc/localtime' (or more
2279 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2281 * The distribution no longer contains any files with names longer than 14
2282 characters.
2284 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2285 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2287 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2288 \f
2289 Version 1.04
2291 * The configuration process has changed quite a bit. The `configure'
2292 script is now used just like the configuration scripts for other GNU
2293 packages. The `sysdeps' directory hierarchy is much rearranged.
2294 The file `INSTALL' explains the new scheme in detail.
2296 * The header files no longer need to be processed into ANSI C and
2297 traditional C versions. There is just one set of files to install, and
2298 it will work with ANSI or old C compilers (including `gcc -traditional').
2300 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2301 MIPS DECStation running Ultrix 4.
2303 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2304 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2305 made itself into a shared library.
2307 * Yet further improved support for the i386, running 4.3 BSD-like systems
2308 (such as Mach 3 with the Unix single-server), or System V.
2310 * New function `strncasecmp' to do case-insensitive string comparison
2311 with limited length.
2313 * New function `strsep' is a reentrant alternative to `strtok'.
2315 * New functions `scandir' and `alphasort' for searching directories.
2317 * New function `setenv' is a better interface to `putenv'.
2319 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2320 function for traversing a directory tree.
2322 * The GNU obstack package is now also part of the C library.
2323 The new function `open_obstack_stream' creates a stdio stream that
2324 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2325 formatted output directly to an obstack.
2327 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2328 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2330 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2332 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2333 things to your strings.
2335 * There are some new test programs: test-fseek, testmb, and testrand.
2337 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2338 These ports are not finished, but are a good starting place for really
2339 supporting those systems.
2341 * `/etc/localtime' is now the standard location for the file that says what
2342 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2343 This follows the general principle that `/etc' is the place for all local
2344 configuration files.
2346 * The C library header files now use `extern "C"' when used by the C++
2347 compiler, so the C library should now work with C++ code.
2349 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2350 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2351 in <strings.h>.)
2353 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2354 function which uses the `merge sort' algorithm, and is said to be
2355 significantly faster than the old GNU `qsort' function. Merge sort is
2356 now the standard `qsort' function. The new algorithm can require a lot
2357 of temporary storage; so, the old sorting function is called when the
2358 required storage is not available.
2360 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2361 provides the Unix `crypt' function, plus some other entry points.
2363 * The code and header files taken from 4.4 BSD have been updated with the
2364 latest files released from Berkeley.
2365 \f
2366 ----------------------------------------------------------------------
2367 Copyright information:
2369 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2371 Permission is granted to anyone to make or distribute verbatim copies
2372 of this document as received, in any medium, provided that the
2373 copyright notice and this permission notice are preserved,
2374 thus giving the recipient permission to redistribute in turn.
2376 Permission is granted to distribute modified versions
2377 of this document, or of portions of it,
2378 under the above conditions, provided also that they
2379 carry prominent notices stating who last changed them.
2380 \f
2381 Local variables:
2382 version-control: never
2383 fill-column: 76
2384 End: