1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2015 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.
10 * The following bugs are resolved with this release:
12 438, 4719, 6792, 13028, 13064, 14094, 14841, 14906, 15319, 15467, 15790,
13 15969, 16159, 16339, 16351, 16352, 16512, 16560, 16704, 16783, 16850,
14 17053, 17090, 17195, 17269, 17293, 17523, 17542, 17569, 17581, 17588,
15 17596, 17620, 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779,
16 17792, 17836, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
17 17967, 17969, 17978, 17987, 17991, 17996, 17998, 17999, 18007, 18019,
18 18020, 18029, 18030, 18032, 18036, 18038, 18039, 18042, 18043, 18046,
19 18047, 18049, 18068, 18080, 18093, 18100, 18104, 18110, 18111, 18116,
20 18125, 18128, 18138, 18185, 18196, 18197, 18206, 18210, 18211, 18217,
21 18220, 18221, 18234, 18244, 18247, 18287, 18319, 18333, 18346, 18397,
22 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18468, 18469.
24 * Cache information can be queried via sysconf() function on s390 e.g. with
25 _SC_LEVEL1_ICACHE_SIZE as argument.
27 * A buffer overflow in gethostbyname_r and related functions performing DNS
28 requests has been fixed. If the NSS functions were called with a
29 misaligned buffer, the buffer length change due to pointer alignment was
30 not taken into account. This could result in application crashes or,
31 potentially arbitrary code execution, using crafted, but syntactically
32 valid DNS responses. (CVE-2015-1781)
34 * The time zone file parser has been made more robust against crafted time
35 zone files, avoiding heap buffer overflows related to the processing of
36 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
37 large time zone data files. Overly long time zone specifiers in the TZ
38 variable no longer result in stack overflows and crashes.
40 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
41 for LD and GD on x86 and x86-64, has been implemented. You will need
42 binutils-2.24 or later to enable this optimization.
44 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
45 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
46 Hat). These updates cause user visible changes, such as the fix for bug
49 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
50 and getXXbyYY NSS calls for the same database, causing a denial-of-service
51 condition in some applications.
55 * The following bugs are resolved with this release:
57 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
58 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
59 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
60 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
61 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
62 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
63 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
64 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
65 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
66 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
69 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
70 too little memory for the to-be-scanned arguments and overflow the
71 allocated buffer. The implementation now correctly computes the required
72 buffer size when using malloc, and switches to malloc from alloca as
75 * A new semaphore algorithm has been implemented in generic C code for all
76 machines. Previous custom assembly implementations of semaphore were
77 difficult to reason about or ensure that they were safe. The new version
78 of semaphore supports machines with 64-bit or 32-bit atomic operations.
79 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
80 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
82 * Port to Altera Nios II has been contributed by Mentor Graphics.
84 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
85 implementations for powerpc64/powerpc64le.
86 Implemented by Adhemerval Zanella (IBM).
88 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
89 and powerpc64le. This may improve lock scaling of existing programs on
90 HTM capable systems. The lock elision code is only enabled with
91 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
92 powerpc will issue a transaction abort on every syscall to avoid side
93 effects being visible outside transactions.
95 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
96 AArch64. Contributed by ARM Ltd.
98 * i386 memcpy functions optimized with SSE2 unaligned load/store.
100 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
101 under certain input conditions resulting in the execution of a shell for
102 command substitution when the application did not request it. The
103 implementation now checks WRDE_NOCMD immediately before executing the
104 shell and returns the error WRDE_CMDSUB as expected.
106 * CVE-2012-3406 printf-style functions could run into a stack overflow when
107 processing format strings with a large number of format specifiers.
109 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
110 infinite loop if the DNS response contained a PTR record of an unexpected
113 * The minimum GCC version that can be used to build this version of the GNU
114 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
115 still be used to compile programs using the GNU C Library.
117 * The GNU C Library is now built with -Werror by default. This can be
118 disabled by configuring with --disable-werror.
120 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
122 * The obsolete sigvec function has been removed. This was the original
123 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
124 programs have been using instead for about 25 years. Of course, ABI
125 compatibility for old binaries using sigvec remains intact.
127 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
128 with newer versions of bison.
130 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
131 The original MIPS o32 hard-float ABI requires an FPU where double-precision
132 registers overlay two consecutive single-precision registers. MIPS32R2
133 introduced a new FPU mode (FR=1) where double-precision registers extend the
134 corresponding single-precision registers which is incompatible with the
135 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
136 require the use of FR=1 making a transition necessary. New o32 ABI
137 extensions enable users to migrate over time from the original o32 ABI
138 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
139 tracks the ABI of any loaded object and verifies that new objects are
140 compatible. Mode transitions will also be requested as required and
141 unsupportable objects will be rejected. The ABI checks include both soft and
142 hard float ABIs for o32, n32 and n64.
144 GCC 5 with GNU binutils 2.25 onwards:
145 It is strongly recommended that all o32 system libraries are built using the
146 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
147 with the original and all new o32 ABI extensions. Configure a MIPS GCC
148 compiler using --with-fp-32=xx to set this by default.
152 * The following bugs are resolved with this release:
154 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
155 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
156 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
157 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
158 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
159 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
160 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
161 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
162 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
163 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
164 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
165 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
166 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
167 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
168 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
170 * Reverted change of ABI data structures for s390 and s390x:
171 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
172 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
173 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
174 are preserved pointing straight to the same implementation as the old ones.
175 Given that, new callers will simply provide a too-big buffer to these
176 functions. Any applications/libraries out there that embed jmp_buf or
177 ucontext_t in an ABI-relevant data structure that have already been rebuilt
178 against 2.19 headers will have to rebuilt again. This is necessary in any
179 case to revert the breakage in their ABI caused by the glibc change.
181 * Support for file description locks is added to systems running the
182 Linux kernel. The standard file locking interfaces are extended to
183 operate on file descriptions, not file descriptors, via the use of
184 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
185 are associated with an open file instead of a process.
187 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
189 * The minimum Linux kernel version that this version of the GNU C Library
190 can be used with is 2.6.32.
192 * Running the testsuite no longer terminates as soon as a test fails.
193 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
194 with PASS or FAIL lines for individual tests. A summary of the results is
195 printed, including a list of failing lists, and "make check" exits with
196 error status if there were any unexpected failures. "make check
197 stop-on-test-failure=y" may be used to keep the old behavior.
199 * The am33 port, which had not worked for several years, has been removed
202 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
203 supported; they now act the same as _DEFAULT_SOURCE (but generate a
204 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
205 conflicted with POSIX (support for which was removed in 2.19), the
206 interfaces those macros enabled remain available when compiling with
207 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
210 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
212 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
213 This may improve lock scaling of existing programs on TX capable systems.
214 The lock elision code is only built with --enable-lock-elision=yes and
215 then requires a GCC version supporting the TX builtins. With lock elision
216 default mutexes are elided via __builtin_tbegin, if the cpu supports
217 transactions. By default lock elision is not enabled and the elision code
220 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
221 copy the path argument. This allowed programs to cause posix_spawn to
222 deference a dangling pointer, or use an unexpected pathname argument if
223 the string was modified after the posix_spawn_file_actions_addopen
226 * All supported architectures now use the main glibc sysdeps directory
227 instead of some being in a separate "ports" directory (which was
228 distributed separately before glibc 2.17).
230 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
231 On configurations that support it (all Linux configurations), it's now
232 used regardless of the --enable-add-ons switch to configure. It is no
233 longer possible to build such configurations without pthreads support.
235 * Locale names, including those obtained from environment variables (LANG
236 and the LC_* variables), are more tightly checked for proper syntax.
237 setlocale will now fail (with EINVAL) for locale names that are overly
238 long, contain slashes without starting with a slash, or contain ".." path
239 components. (CVE-2014-0475) Previously, some valid locale names were
240 silently replaced with the "C" locale when running in AT_SECURE mode
241 (e.g., in a SUID program). This is no longer necessary because of the
244 * On x86-64, the dynamic linker's lazy-binding support is now compatible
245 with application code using Intel MPX instructions. (With all previous
246 versions, the MPX register state could be clobbered when making calls
247 into or out of a shared library.) Note that while the new dynamic
248 linker is compatible with all known x86 hardware whether or not it
249 supports Intel MPX, some x86 instruction-set emulators might fail to
250 handle the new instruction encodings. This is known to affect Valgrind
251 versions up through 3.9 (but will be fixed in the forthcoming 3.10
252 release), and might affect other tools that do instruction emulation.
254 * Support for loadable gconv transliteration modules has been removed.
255 The support for transliteration modules has been non-functional for
256 over a decade, and the removal is prompted by security defects. The
257 normal gconv conversion modules are still supported. Transliteration
258 with //TRANSLIT is still possible, and the //IGNORE specifier
259 continues to be supported. (CVE-2014-5119)
261 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
262 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
263 resulting a denial-of-service security vulnerability in applications which
264 use functions related to iconv. (CVE-2014-6040)
268 * The following bugs are resolved with this release:
270 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
271 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
272 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
273 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
274 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
275 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
276 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
277 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
278 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
279 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
280 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
281 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
282 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
283 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
284 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
285 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
286 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
287 16431, 16453, 16474, 16506, 16510, 16529
289 * Slovenian translations for glibc messages have been contributed by the
290 Translation Project's Slovenian team of translators.
292 * The public headers no longer use __unused nor __block. This change is to
293 support compiling programs that are derived from BSD sources and use
294 __unused internally, and to support compiling with Clang's -fblock
295 extension which uses __block.
297 * CVE-2012-4412 The strcoll implementation caches indices and rules for
298 large collation sequences to optimize multiple passes. This cache
299 computation may overflow for large collation sequences and may cause a
300 stack or buffer overflow. This is now fixed to use a slower algorithm
301 which does not use a cache if there is an integer overflow.
303 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
304 rules for large collation sequences to optimize multiple passes and falls
305 back to alloca if malloc fails, resulting in a possible stack overflow.
306 The implementation now falls back to an uncached collation sequence lookup
309 * CVE-2013-4788 The pointer guard used for pointer mangling was not
310 initialized for static applications resulting in the security feature
311 being disabled. The pointer guard is now correctly initialized to a
312 random value for static applications. Existing static applications need
313 to be recompiled to take advantage of the fix (bug 15754).
315 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
316 to the d_name member of struct dirent, or omit the terminating NUL
317 character. (Bugzilla #14699).
319 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
320 aligned_alloc functions could allocate too few bytes or corrupt the
321 heap when passed very large allocation size values (Bugzilla #15855,
324 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
325 for AF_INET6 has been fixed (Bugzilla #16072).
327 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
328 pap_CW, quz_PE, the_NP.
330 * Substantially revised locales: gd_GB, ht_HT
332 * The LC_ADDRESS field was updated to support country_car for almost all
335 * ISO 1427 definitions were updated.
337 * ISO 3166 definitions were updated.
339 * The localedef utility now supports --big-endian and --little-endian
340 command-line options to generate locales for a different system from that
341 for which the C library was built.
343 * Binary locale files now only depend on the endianness of the system for
344 which they are generated and not on other properties of that system. As a
345 consequence, binary files generated with new localedef may be incompatible
346 with old versions of the GNU C Library, and binary files generated with
347 old localedef may be incompatible with this version of the GNU C Library,
348 in the following circumstances:
350 + Locale files may be incompatible on m68k systems.
352 + Locale archive files (but not separate files for individual locales) may
353 be incompatible on systems where plain "char" is signed.
355 * The configure option --disable-versioning has been removed. Builds with
356 --disable-versioning had not worked for several years.
358 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
359 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
361 * SystemTap probes for malloc have been introduced.
363 * SystemTap probes for slow multiple precision fallback paths of
364 transcendental functions have been introduced.
366 * Support for powerpc64le has been added.
368 * The soft-float powerpc port now supports e500 processors.
370 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
372 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
373 set of header declarations that are enabled by default, even when other
374 feature test macros or compiler options such as -std=c99 would otherwise
375 disable some of those declarations.
377 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
378 conflict with POSIX. The libbsd-compat library (which was a dummy library
379 that did nothing) has also been removed.
381 * Preliminary documentation about Multi-Thread, Async-Signal and
382 Async-Cancel Safety has been added.
384 * Change of ABI data structures for s390 and s390x:
385 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
386 allow for future hardware extensions. All library functions that accept or
387 return these structures were versioned in order to provide backwards
388 compatibility with existing code. However, not all cases can be handled
389 with interface versioning. If an application embeds either structure into
390 another structure and that structure is passed to another compilation unit
391 which expects the newer larger-sized object then any access to the new
392 fields will result in undefined behaviour. Similarly any access to fields
393 that were moved by the enlarging of the structures will cause undefined
394 behaviour. To fix the undefined behaviour all objects that are part of the
395 final in-memory image must agree on the size of structures, and this may
396 require recompilation.
400 * The following bugs are resolved with this release:
402 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
403 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
404 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
405 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
406 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
407 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
408 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
409 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
410 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
411 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
412 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
413 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
414 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
417 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
418 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
419 Distributions can re-enable building and using pt_chown via the new configure
420 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
421 considerable security risks and should only be used if the distribution
422 understands and accepts the risks.
424 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
427 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
428 fixed (Bugzilla #15330).
430 * Add support for calling C++11 thread_local object destructors on thread
431 and program exit. This needs compiler support for offloading C++11
432 destructor calls to glibc.
434 * Improved worst case performance of libm functions with double inputs and
437 * Support for priority inherited mutexes in pthread condition variables on
438 non-x86 architectures.
440 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
442 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
444 * Optimized string functions for ARM. Implemented by Will Newton and
447 * Optimized libm functions for SPARC. Implemented by David S. Miller.
449 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
452 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
453 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
455 * Added a benchmark framework to track performance of functions in glibc.
457 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
458 It is based on draft TS 18661 and currently enabled as a GNU extension.
460 * On Linux, the clock function now uses the clock_gettime system call
461 for improved precision, rather than old times system call.
463 * Added support for version-3 tz format files. This is needed when using
464 the tz database release 2013e or later, and affects a few unusual cases --
465 currently only TZ='America/Godthab' for time stamps after 2037.
467 * Added new API functions pthread_getattr_default_np and
468 pthread_setattr_default_np to get and set the default pthread
469 attributes of a process.
471 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
472 This may improve lock scaling of existing programs on TSX capable systems.
473 When the --enable-lock-elision=yes parameter is specified at configure
474 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
477 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
478 availability). Implemented by Ryan S. Arnold.
480 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
484 * The following bugs are resolved with this release:
486 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
487 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
488 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
489 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
490 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
491 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
492 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
493 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
494 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
495 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
496 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
497 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
498 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
499 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
500 14879, 14889, 14893, 14898, 14914.
502 * Optimization of memcpy for MIPS.
504 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
505 EMFILE has been fixed (Bugzilla #14889).
507 * The add-on ports collection is now distributed in the "ports" subdirectory
508 of the main GNU C Library distribution, rather than separately.
510 * Port to ARM AArch64 contributed by Linaro.
512 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
513 Optimized versions of memcpy, memset, and memcmp added for System z10 and
515 Implemented by Andreas Krebbel.
517 * The new function secure_getenv allows secure access to the environment,
518 returning NULL if running in a SUID/SGID process. This function replaces
519 the internal function __secure_getenv.
521 * SystemTap static probes have been added into the dynamic linker.
522 Implemented by Gary Benson.
524 * Optimizations of string functions strstr, strcasestr and memmem.
525 Implemented by Maxim Kuvyrkov.
527 * The minimum Linux kernel version that this version of the GNU C Library
528 can be used with is 2.6.16.
530 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
531 powerpc POWER7. Implemented by Will Schmidt.
533 * New configure option --disable-nscd builds the C library such that it
534 never attempts to contact the Name Service Caching Daemon (nscd).
535 New configure option --disable-build-nscd avoids building nscd itself;
536 this is the default if --disable-nscd is used.
538 * Improved support for cross-compilation, including cross-testing and
539 bootstrap builds without a previously built glibc.
541 * Several testsuite tests are now able to test multiple IFUNC variants of an
542 interface, rather than just testing the one that would be chooen by
545 * New configure options --with-bugurl and --with-pkgversion, for
546 distributors to use to embed their bug-reporting and package version
547 information in --help and --version output.
549 * The ttyname and ttyname_r functions on Linux now fall back to searching for
550 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
551 allows creation of chroots without the procfs mounted on /proc.
553 * The `crypt' function now fails if passed salt bytes that violate the
554 specification for those values. On Linux, the `crypt' function will
555 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
556 enabled, and fail on encrypted strings using the MD5 or DES algorithm
557 when the mode is enabled.
559 * The `clock_*' suite of functions (declared in <time.h>) is now available
560 directly in the main C library. Previously it was necessary to link with
561 -lrt to use these functions. This change has the effect that a
562 single-threaded program that uses a function such as `clock_gettime' (and
563 is not linked with -lrt) will no longer implicitly load the pthreads
564 library at runtime and so will not suffer the overheads associated with
565 multi-thread support in other code such as the C++ runtime library.
567 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
572 * The following bugs are resolved with this release:
574 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
575 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
576 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
577 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
578 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
579 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
580 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
581 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
582 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
583 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
584 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
585 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
586 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
587 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
588 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
589 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
590 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
591 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
592 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
593 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
594 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
595 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
598 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
599 configuring glibc with:
600 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
601 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
602 Implemented by H.J. Lu.
606 + define static_assert
608 + do not declare gets
610 + declare at_quick_exit and quick_exit also for ISO C11
612 + aligned_alloc. NB: The code is deliberately allows the size parameter
613 to not be a multiple of the alignment. This is a moronic requirement
614 in the standard but it is only a requirement on the caller, not the
619 + uchar.h support added
621 + CMPLX, CMPLXF, CMPLXL added
623 Implemented by Ulrich Drepper.
625 * Support for the IA-64 has been moved to ports.
627 * Remove support for anything but ELF binary format
629 * Checking versions of poll, ppoll added.
630 Implemented by Ulrich Drepper.
632 * More generic and 64-bit performance optimizations to math functions.
633 Implemented by Ulrich Drepper.
635 * New configure option --enable-obsolete-rpc makes the deprecated RPC
636 headers and functions available at compile time as they were before
637 version 2.14. This option will be removed at some time in the future
638 after the TI-RPC library becomes fully sufficient for the needs of
639 existing applications.
641 * Compatibility code for Linux kernel versions before 2.4 has been removed.
642 Note that glibc is not expected to work with any Linux kernel version
645 * New header <sys/auxv.h> and function getauxval allowing easy access to
646 the AT_* key-value pairs passed from the Linux kernel. The header also
647 defines the HWCAP_* bits associated with the AT_HWCAP key.
649 * New locales: mag_IN
651 * New configure option --enable-systemtap builds SystemTap static probes
652 into libc for setjmp and longjmp and into libpthread for various operations.
653 So far the setjmp/longjmp probes and some of the libpthread probes are
654 provided only for i*86 and x86_64.
655 Implemented by Roland McGrath and Rayson Ho.
657 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
659 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
662 * More optimized functions for SPARC. Implemented by David S. Miller.
664 * Improved support for cross-compilation, especially bootstrap builds
665 without a previously built glibc.
667 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
668 Chris Metcalf from Tilera.
670 * Support for the old ARM ABI has been removed from ports. Only the EABI is
671 now supported for ARM processors.
673 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
674 as the name of the dynamic linker, to distinguish it from the
675 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
677 * Support for CRIS has been removed from ports.
679 * A new class of installed header has been documented for low-level
680 platform-specific functionality. PowerPC added the first instance with a
681 function to provide time base register access. Contributed by Tulio
682 Magno Quites Machado Filho.
684 * ix86 configurations now install header files that are consistent with
685 what x86-64 configurations install. These same header files can be used
686 for -m32, -m64, or -mx32 builds.
687 Contributed by H.J. Lu.
689 * Math library bug fixes. A thorough audit of all open math library bugs was
690 conducted by Joseph Myers. Significant progress was made on many math
691 library bugs resulting in more accurate exceptions and function results.
692 Many thanks to all those that contributed including Andreas Jaeger for his
693 patch review and work on the x87 trigonometric instruction issues.
695 * Timezone data is no longer installed. Timezone-related binaries and scripts
696 will continue to be installed. Users should obtain their timezone data from
697 their distribution provider or from the tzdata package at
698 <ftp://munnari.oz.au/pub/>.
702 * The following bugs are resolved with this release:
704 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
705 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
706 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
707 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
708 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
709 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
710 13484, 13506, 13515, 13523, 13524, 13538, 13540
712 * New program pldd to list loaded object of a process
713 Implemented by Ulrich Drepper.
715 * Add nss_db support back to glibc. No more dependency on Berkeley db
716 and support for initgroups lookups.
717 Implemented by Ulrich Drepper.
719 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
720 Contributed by HJ Lu.
722 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
723 Contributed by HJ Lu.
725 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
726 on x86-32 and x86-64.
727 Contributed by Liubov Dmitrieva.
729 * Optimized strchr and strrchr for SSE on x86-32.
730 Contributed by Liubov Dmitrieva.
732 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
733 for x86-64 and x86-32.
734 Contributed by Liubov Dmitrieva.
736 * New interfaces: scandirat, scandirat64
737 Implemented by Ulrich Drepper.
739 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
740 Implemented by Ulrich Drepper.
742 * nscd now also caches the netgroup database.
743 Implemented by Ulrich Drepper.
745 * Integrate libm with gcc's -ffinite-math-only option.
746 Implemented by Ulrich Drepper.
748 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
749 to math functions. Implemented by Ulrich Drepper.
751 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
752 Implemented by Ulrich Drepper.
754 * New Linux interfaces: process_vm_readv, process_vm_writev
756 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
757 Implemented by Ulrich Drepper.
759 * Optimized nearbyint and strcasecmp for PPC.
760 Implemented by Adhemerval Zanella.
762 * New locales: bho_IN, unm_US, es_CU, ta_LK
766 * The following bugs are resolved with this release:
768 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
769 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
770 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
771 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
772 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
773 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
774 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
775 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
776 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
777 12795, 12811, 12813, 12814, 12841
779 * The RPC implementation in libc is obsoleted. Old programs keep working
780 but new programs cannot be linked with the routines in libc anymore.
781 Programs in need of RPC functionality must be linked against TI-RPC.
782 The TI-RPC implementation is IPv6 enabled and there are other benefits.
784 Visible changes of this change include (obviously) the inability to link
785 programs using RPC functions without referencing the TI-RPC library and the
786 removal of the RPC headers from the glibc headers.
787 Implemented by Ulrich Drepper.
789 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
790 syncfs, setns, sendmmsg
792 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
793 yue_HK, lij_IT, mhr_RU
795 * New encodings: CP770, CP771, CP772, CP773, CP774
797 * New program sotruss to trace calls through PLTs
798 Implemented by Ulrich Drepper.
800 * The malloc hook implementation is marked deprecated and will be removed
801 from the default implementation in the next version. The design never
802 worked ever since the introduction of threads. Even programs which do
803 not create threads themselves can use multiple threads created internally.
807 * The following bugs are resolved with this release:
809 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
810 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
811 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
812 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
815 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
817 * POWER7 optimizations: memset, memcmp, strncmp
819 * New optimized string functions for x86-64: strnlen (SSE2),
820 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
821 Implemented by Ulrich Drepper.
825 * The following bugs are resolved with this release:
827 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
828 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
829 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
830 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
831 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
832 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
833 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
834 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
836 * New interfaces: pthread_getname_np, pthread_setname_np
838 * New Linux interface: recvmmsg
840 * STT_GNU_IFUNC implemented for Sparc by David Miller.
842 * The dynamic linker now recognizes supported ABI versions from the
843 EI_ABIVERSION field in the ELF header.
844 Implemented by Ulrich Drepper.
846 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
847 will not be used to fill in password fields in the passwd.byname replies.
848 Instead it is used to synthesize the shadow.byname table, should it be
849 missing. This is a useful mode in some installations involving Solaris.
850 Implemented by Ulrich Drepper.
852 * New locales: kok_IN, sq_MK, cv_RU
856 * The following bugs are resolved with this release:
858 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
859 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
860 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
861 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
862 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
863 10789, 10817, 10823, 10840, 10847
865 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
867 Implemented by Ulrich Drepper.
869 * Checking version of longjmp added that fails if an uninitialized stack
870 frame would be created. Implemented by Ulrich Drepper.
872 * STT_GNU_IFUNC is now supported in static executables.
873 Implemented by H.J. Lu.
875 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
877 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
878 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
879 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
880 Contributed by H.J. Lu.
882 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
883 Implemented by Ulrich Drepper.
885 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
887 Contributed by H.J. Lu.
889 * Support for fma instruction in AVX on x86-64.
890 Implemented by H.J. Lu and Ulrich Drepper.
892 * AVX support in x86-64 auditing support in ld.so.
893 Implemented by H.J. Lu.
895 * STB_GNU_UNIQUE support added.
896 Implemented by Ulrich Drepper.
898 * Implement second fallback mode for optimized DNS lookup for even more
899 broken environments. If two requests from the same port are not
900 handled correctly close the socket and open a new one before sending
901 the second request. The 'single-request-reopen' option in /etc/resolv.conf
902 can be used to select this mode right away, instead of rediscovering the
903 necessity is every process again.
904 Implemented by Ulrich Drepper.
906 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
907 Implemented by Adam Tkac.
909 * Optimized iconv conversions for S390x.
910 Implemented by Andreas Krebbel.
912 * Using condvars with PI mutexes is now more efficient due to kernel
913 support for requeueing to PI futexes. NPTL support added for x86-64.
914 Implemented by Ulrich Drepper.
916 * New locales: ps_AF, my_MM
920 * The following bugs are resolved with this release:
922 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
923 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
924 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
925 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
926 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
928 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
929 Implemented by Ulrich Drepper.
931 * New Linux interfaces: accept4, fallocate, fallocate64.
932 Implemented by Ulrich Drepper.
934 * Correct declarations of string function when used in C++ code. This
935 could lead to compile errors for invalid C++ code.
937 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
940 * New POSIX 2008 interface: psiginfo
941 Implemented by Ulrich Drepper.
943 * New ISO C++1x interfaces: quick_exit, at_quick_exit
944 Implemented by Ulrich Drepper.
946 * Support for selecting between multiple function definitions at runtime
947 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
949 * The libcrypt library can now use the hash function implementations in
950 NSS. Implemented by Ulrich Drepper.
952 * The malloc implementation can be compiled to be less memory efficient
953 but higher performing in multi-threaded programs.
954 Implemented by Ulrich Drepper.
956 * New locales: nan_TW@latin, ks_IN
958 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
959 Implemented by Ulrich Drepper.
961 * Extended printf hook support. It is possible to use user-defined types
962 and extend existing format specifiers.
963 Implemented by Ulrich Drepper.
965 * Handling for group shadow files has been added.
966 Implemented by Ulrich Drepper.
968 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
969 servers (the case, e.g., for some people using the built-in DNS
970 server in ADSL modems/routers). There is a once-per-process timeout
971 in case of a broken server. To avoid it, users can run nscd or put
972 'options single-request' in /etc/resolv.conf.
973 Implemented by Ulrich Drepper.
977 * The following bugs are resolved with this release:
979 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
980 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
981 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
982 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
983 6968, 6974, 6980, 6995, 7008, 7009, 7029
985 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
986 up at the same time. Implemented by Ulrich Drepper.
988 * TLS descriptors for LD and GD on x86 and x86-64.
989 Implemented by Alexandre Oliva.
991 * getaddrinfo now handles DCCP and UDPlite.
992 Implemented by Ulrich Drepper.
994 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
995 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
996 Implemented by Ulrich Drepper.
998 * New implementation of memmem, strstr, and strcasestr which is O(n).
999 Implemented by Eric Blake.
1001 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
1003 * Implement "e" option for popen to open file descriptor with the
1004 close-on-exec flag set. Implemented by Ulrich Drepper.
1006 * Implement "b" mode for fmemopen. In this mode writes writes don't
1007 implicitly add a NUL byte and seeks from the end of the buffer really
1008 use the buffer end, not the string length as the basis.
1009 Implemented by Ulrich Drepper.
1011 * Many functions, exported and internal, now atomically set the close-on-exec
1012 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
1014 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
1016 Implemented by Pravin Satpute.
1018 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
1022 * The following bugs are resolved with this release:
1024 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
1025 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
1026 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
1027 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
1028 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
1029 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
1030 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
1032 * New locales: bo_CN, bo_IN, shs_CA.
1034 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
1036 * Sorting rules for some Indian languages (Devanagari and Gujarati).
1037 Implemented by Pravin Satpute.
1039 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
1041 * nscd caches now all timeouts for DNS entries
1042 Implemented by Ulrich Drepper.
1044 * nscd is more efficient and wakes up less often.
1045 Implemented by Ulrich Drepper.
1047 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
1048 vdprintf, and obstack_vprintf.
1049 Implemented by Jakub Jelinek.
1051 * Faster memset for x86-64.
1052 Implemented by Harsha Jagasia and H.J. Lu.
1054 * Faster memcpy on x86.
1055 Implemented by Ulrich Drepper.
1057 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
1058 Implemented by Ulrich Drepper.
1060 * Faster sqrt and sqrtf implemention for some PPC variants.
1061 Implemented by Steven Munroe.
1065 * The following bugs are resolved with this release:
1067 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
1068 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
1069 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
1070 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
1071 5071, 5103, 5104, 5112, 5113, 5184, 5186
1073 * More checking functions: fread, fread_unlocked, open*, mq_open.
1074 Implemented by Jakub Jelinek and Ulrich Drepper.
1076 * Extend fortification to C++. Implemented by Jakub Jelinek.
1078 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
1079 by not recognizing 'a' as a modifier when those specs are requested.
1080 Implemented by Jakub Jelinek.
1082 * PPC optimizations to math and string functions.
1083 Implemented by Steven Munroe.
1085 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
1086 options to be passed. Implemented by Ulrich Drepper.
1088 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
1090 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
1091 Implemented by Ulrich Drepper.
1093 * Handle private futexes in the NPTL implementation.
1094 Implemented by Jakub Jelinek and Ulrich Drepper.
1096 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
1097 Implemented by Roland McGrath and Ulrich Drepper.
1099 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
1101 * SHA-256 and SHA-512 based password encryption.
1102 Implemented by Ulrich Drepper.
1104 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
1105 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
1108 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
1109 Implemented by Ulrich Drepper.
1113 * The following bugs are resolved with this release:
1115 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1116 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1117 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1118 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1119 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1120 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1121 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1124 * New Linux interfaces: epoll_pwait, sched_getcpu.
1126 * New generic interfaces: strerror_l.
1128 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1132 * The following bugs are resolved with this release:
1134 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1135 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1136 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1137 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1138 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1139 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1140 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1141 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1142 3225, 3251, 3252, 3253, 3273
1144 * For Linux, the sorting of addresses returned by getaddrinfo now also
1145 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1146 Implemented by Ulrich Drepper.
1148 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1149 Implemented by Ulrich Drepper.
1151 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1153 * New iconv module for MIK. Contributed by Alexander Shopov.
1155 * For sites with broken group and/or passwd database, the auto-propagate
1156 option of nscd can prevent creating ID lookup entries from the results
1157 of a name lookup and vice versa. This usually is no problem but some
1158 site might have problems with the default behavior.
1159 Implemented by Ulrich Drepper.
1161 * Iterating over entire database in NIS can be slow. With the
1162 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1163 to trade time for memory. The entire database will be read at once.
1164 Implemented by Ulrich Drepper.
1166 * The interfaces introduced in RFC 3542 have been implemented by
1169 * Support for the new ELF hash table format was added by Ulrich Drepper.
1171 * Support for priority inheritance mutexes added by Jakub Jelinek and
1174 * Support for priority protected mutexes added by Jakub Jelinek.
1176 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1177 or_IN, csb_PL, fy_NL, sr_ME.
1181 * More overflow detection functions.
1183 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1184 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1186 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1187 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1188 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1189 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1190 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1191 by Masahide Washizawa.
1193 * It is now possible to install audit libraries for the dynamic linker using
1194 LD_AUDIT. Implemented by Ulrich Drepper.
1196 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1197 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1198 For a libc and libpthread that works well on Linux 2.4 kernels, we
1199 recommend using the stable 2.3 branch.
1201 * The new function open_wmemstream acts like open_memstream,
1202 but uses a wchar_t wide character buffer.
1204 * The new function ppoll is an improved version of poll, similar to pselect.
1206 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1207 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1208 renameat, unlinkat, linkat, symlinkat, readlinkat.
1210 * New Linux kernel system calls: unshare,
1211 inotify_init, inotify_add_watch, inotify_rm_watch.
1213 * The euidaccess function is now also known by the alias eaccess,
1214 for compatibility with some other systems.
1216 * Timezone data updated to 2006b version.
1220 * The following bugs are resolved with this release:
1222 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1223 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1224 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1225 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1226 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1227 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1229 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1231 * As of this release, GCC 4 can be used to compile the C Library.
1233 * Timezone data updated to 2005m version.
1237 * The following bugs are resolved with this release:
1239 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1240 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1241 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1242 777, 787, 821, 822, 823, 825
1244 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1248 * Support for RFC 3678. Real implementations exist only for Linux so far.
1249 Implemented by Ulrich Drepper.
1251 * nscd can now cache entries persistently. Expiring entries are reloaded.
1252 For speedups the cache can be shared in memory with client processes.
1253 Implemented by Ulrich Drepper.
1255 * nscd can now perform SELinux checks.
1256 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1258 * getaddrinfo queries are now cached. Canonical name lookup is performed
1260 Implemented by Ulrich Drepper.
1262 * The nothrow function attribute is used when headers are used by gcc when
1263 compiling C code. This can avoid significant amounts of exception
1266 * The malloc functions perform more error checking and are stricter when
1267 it comes to reacting on errors. The default action is to terminate
1268 the process after showing an error message. Implemented by Ulrich Drepper.
1270 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1271 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1273 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1274 namespaces using the new function dlmopen(). This feature is of course,
1275 like most other dynamic loading functionality, not available in statically
1276 linked applications. Implemented by Ulrich Drepper.
1278 * Low-overhead boundary checking variants of string and some stdio functions
1279 were added. These are to be used in conjunction with a gcc patch by
1280 Jakub Jelinek which adds calls to these functions if possible.
1281 Implemented by Jakub Jelinek and Ulrich Drepper.
1283 * Old code for several operating systems and machine architectures that
1284 have not been in working condition in a long time have been removed from
1285 the main source tree maintained by the GNU C Library's maintainers.
1286 These files are now reside in the separate `ports' source module
1287 that is usable as an add-on when building the library.
1291 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1292 interrogate the dynamic linker, compatible with the Solaris interface.
1294 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1295 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1297 * getifaddrs now uses the netlink interface on Linux to get its information.
1298 Implemented by Thorsten Kukuk.
1300 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1301 Implemented by Ulrich Drepper.
1303 * support for non-executable stacks on x86 has been added. Changes mostly
1306 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1309 * getaddrinfo now performs destination address selection according to
1314 * Thread-safe interfaces for many functions that access locale data
1315 were added in version 2.3, but these features were omitted from NEWS.
1316 Many functions have variants with an `_l' suffix that take a `locale_t'
1317 object as a parameter rather than consulting the current locale.
1318 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1319 create and maintain `locale_t' objects. Additionally, the new function
1320 `uselocale' sets "the current locale" (as used by functions not so
1321 parameterized) set for an individual thread. These features were added
1322 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1324 * The functions getresuid, getresgid, setresuid, and setresgid, which
1325 have long been available on Linux, are now declared in <unistd.h>
1326 and are now also available on the Hurd.
1328 * ELF thread-local storage support (TLS) now works on x86-64.
1330 * The new dynamic string token $LIB is expanded in shared library names.
1331 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1333 * Aldy Hernandez contributed complete software floating point support for
1334 PowerPC machines with no FPU.
1336 * fexecve is implemented on Linux.
1338 * The `btowc' function should work at least twice as fast due to
1339 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1341 * With approriate thread add-ons cancelable functions are now implemented
1342 in libc.so as well. No need to call the function in libpthread. This
1343 change allowed to finally disable the incorrect and expensive handling
1344 of weak definition in ld.so.
1346 * Yet more PLT entries in libc.so have been removed. We finally arrived
1347 at the bare minimum. Startup times improved appropriately.
1349 * Support for the new Linux/x86 system call interface was added. The
1350 AT_SYSINFO auxiliary vector entry is recognized and handled.
1354 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1357 * iconv (the program and the interface) now accepts empty names (excluding
1358 options like //TRANSLIT) to mean "use charset of current locale".
1360 * localedef can now transliterate characters in strings which are not in
1361 the provided charmap. The information from the input locale is used.
1363 * Prelinking support was added for ELF targets. This requires additional
1364 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1366 * Read-only stdio streams now use mmap to speed up operation by eliminating
1367 copying and buffer underflows. To use add 'm' to the mode string of
1368 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1370 * The malloc functions were completely rewritten by Wolfram Gloger based
1371 on Doug Lea's malloc-2.7.0.c.
1373 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1374 implementation of regex.
1376 * Bruno Haible upgraded the iconv and locale implementation to support
1379 * Contents of the LC_* and LANG environment variables in the CEN style are
1380 not recognized anymore. It never was used. Change by Ulrich Drepper.
1382 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1383 thread-local storage (TLS) ABI on some platforms.
1384 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1386 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1387 EUC-JISX0213, and TSCII.
1389 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1390 BSD-compatible interface for getting all network interface addresses.
1391 Implementation for IPv4 by Roland McGrath.
1393 * Loading of locale data is faster due to the introduction of a locale
1394 archive. Implemented by Roland McGrath and Ulrich Drepper.
1396 * Startup times are significantly reduced by not using exported functions
1397 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1400 * Steven Munroe contributed a port to PowerPC64/Linux.
1404 * The Hurd now uses the GNU libio implementation of stdio rather than the
1405 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1407 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1408 with the same behavior as the Linux system call of the same name.
1412 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1413 128-bit long double format.
1415 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1416 IBM1161, and IBM1162 charsets.
1418 * Andreas Jaeger contributed a port to x86-64/Linux.
1420 * Peter Bruin contributed a port to PowerPC/Hurd.
1422 * libc functions using I/O streams now can handle wide-oriented streams
1425 * optimizations in the dynamic linker. Binaries created by recent binutils
1426 versions start up quicker due to reduced time spent on relocations.
1428 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1432 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1433 asinh, atanh, j0 for the 128-bit long double format.
1435 * Bruno Haible updated all the code handling Unicode in some form to
1436 support Unicode 3.1.
1438 * Speed of regex for single-byte locales is back to previous levels.
1439 Patch by Isamu Hasegawa.
1441 * Alpha, SPARC, and IA-64 now also using floating stacks.
1443 * Startup time of internationalized applications greatly improved through
1444 iconv cache. Use iconvconfig to generate the cache file.
1445 Contributed by Ulrich Drepper.
1447 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1448 severe performance problems. Patch by David Mosberger.
1450 * The Hurd port got a lot more functionality like AIO, various stdio
1451 extensions, etc. Mainly done by Roland McGrath.
1453 * mtrace can now lookup symbols in shared libraries.
1457 * Intel's IA-64 math library is largely integrated. It provides fast and
1458 accurate implementatations for most basic and standard math functions
1459 in float, double, and long double format.
1461 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1462 and asin for the 96-bit long double format and asin, log, tan for the
1463 128-bit long double format.
1465 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1466 The basic double functions exist today. Contributed by Abraham Ziv
1467 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1468 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1470 * An asynchronous name lookup library was added. The interface is designed
1471 after POSIX AIO. The proposal was circulated beforehand to get comments.
1472 No negative ones came in. Implemented by Ulrich Drepper.
1474 * Port to S390/64bit contributed by Martin Schwidefsky
1475 <schwidefsky@de.ibm.com>.
1477 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1478 of functions for Linux/IA-64.
1480 * The RPC code is now thread safe. Threads can now use the same service
1481 of different services at the same time. Patch by Eric Norum
1482 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1484 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1485 family of functions for Linux/S390.
1487 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1488 of functions for Linux/x86.
1490 * Port to Linux/CRIS contributed by Axis Communications.
1494 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1495 we can now check for namespace violations and missing declarations. The
1496 result is that almost all headers are now Unix-compliant (as defined in
1497 the upcoming XPG6). The negative side is that some programs might need
1498 corrections, too, if they depend on the incorrect form of the headers in
1499 previous versions which defined too many symbols and included too many
1502 * regex now handles multibyte character sets correctly.
1503 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1505 * iconv (the program) does now conform to the upcoming XPG6 and handles
1506 charmaps. Instead of the charset names the path of charmaps can be
1507 provided and the conversion happens based on this data.
1508 Contributed by Ulrich Drepper.
1510 * The locale program now provides detailed information about the installed
1515 only lists the names of the supported locales
1519 provides details such as country, language, and codeset name.
1520 Contributed by Ulrich Drepper.
1524 * The gencat program now parses the input file according to the charset
1525 selected by the LC_CTYPE category. This is important for stateful
1526 character sets. To make generating catalogs easier there is a way
1527 to overwrite the charset selected by the locale: before the first
1528 message or $ quote line the catalog can contain a line like
1530 $ codeset=ISO-8859-2
1532 to select the charset (ISO-8859-2 in this case).
1534 Implemented by Shinya Hanataka and Ulrich Drepper.
1536 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1537 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1538 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1540 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1541 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1543 * The LANGUAGE environment variable is now ignored unless the locale is
1544 changed from the default "C" locale.
1546 * The usual bug fixes.
1550 * Greg McGary added runtime support for bounds checking using gcc's
1551 new -fbounded-pointers option. ix86 target is complete. PowerPC
1554 * Thorsten Kukuk added secure mode support to nscd.
1556 * The Berkeley db libraries have been removed.
1558 Related, the nss_db module is now in a separate package since it
1559 obviously requires a database library being available.
1561 * Wide character I/O streams implemented by Ulrich Drepper.
1563 * Functions from the extended socket API added by Ulrich Drepper.
1565 * Functions feenableexcept and fedisableexcept to control the
1566 behaviour of individual exceptions have been added by Andreas Jaeger.
1568 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1570 * The resolver code has been updated from bind 8.2.3-T5B which supports
1571 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1574 This change could in some situations effect backward compatibility. Since
1575 now `_res' is a thread-local instead of a global variable, modifying it
1576 in one thread does not have any effect in other threads.
1578 The resolver library was also extended to allow IPv6 as the transport
1579 protocol for the requests. This work was done by Stig Venaas.
1581 * Compatibility code for K&R C compilers has been removed from the
1582 header files. A ISO C compiler is needed to use the library
1583 (conforming to either C89 or C99 standard).
1585 * Complete rewrite of the localedef program to support multibyte character
1586 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1587 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1588 Implemented by Ulrich Drepper.
1590 Bruno Haible significantly improved the generation and use of the data
1591 structures for the wide character tables.
1593 * Plural handling in gettext implemented by Ulrich Drepper.
1595 * The utmp daemon has been removed.
1597 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1599 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1602 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1604 * POSIX barriers implemented by Kaz Kylheku.
1606 * POSIX spawn function family implemented by Ulrich Drepper.
1608 * POSIX spinlocks are now available.
1610 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1612 * the configure option --enable-kernel=X.Y.Z allows to strip out
1613 compatibility for kernel versions before X.Y.Z. This is currently only
1614 implemented for Linux.
1616 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1617 field sin6_scope_id. This means that all programs using IPv6 should be
1618 recompiled. Don't expect binary compatibility with previous glibc
1621 * various conversion modules for IBM character sets contributed by
1624 * IA-64 port by Jes Sorensen and HJ Lu.
1638 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1640 * New xdr functions are added; some rpc functions are now 64bit clean.
1642 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1644 * Fixed known incompatibilities with glibc 2.0.
1646 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1648 * Optimized a number of functions (especially the ELF dynamic loader).
1650 * Update timezone data files.
1652 * lots of charmaps corrections
1654 * some new locale definitions and charmaps
1659 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1660 conform to POSIX member type requirements. Symbol versions have been
1661 adjusted as needed within the library, and for direct use by applications,
1662 but there is potential for problems if third-party libraries use
1663 struct timeval as part of their interface. This does not present
1664 a problem for X and other "essential" system libraries.
1666 * An additional locale model to support C++ Standard Library locale
1667 model and probably more was implemented by Ulrich Drepper.
1669 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1672 * Miles Bader provided the `argp' function family to support hierachical
1673 command line argument parsing, layered on top of getopt.
1675 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1677 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1680 * scanf recognizes the %a and %A format for scanning floating point numbers.
1682 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1683 information and interfaces for the available integer types.
1685 * about 130 new math functions were added to implement the ISO C9x math
1688 * the new header <complex.h> contains definitions of the complex math
1689 functions from ISO C 9X.
1691 * the new header <tgmath.h> defines generic macros to use complex or
1692 real valued functions.
1694 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1696 * Andreas Jaeger provided a test suite for the math library.
1698 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1700 * Ulrich Drepper added character set conversion functions (iconv).
1702 * Optimized string functions have been added.
1704 * The localedata addon is now part of glibc.
1706 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1708 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1709 daemon for NSS (nscd).
1711 Missing a better place here are some numbers on improvements. Under
1712 Linux 2.1.125 un-tar-ing the kernel sources takes
1716 using local files 12.19s 6.88s 22.91s
1718 using NIS 13.92s 8.91s 26.34s
1720 using NIS & nscd 10.37s 7.34s 25.30s
1722 using NIS+ 27.57s 30.37s 640.46s
1724 using NIS+ & nscd 10.25s 7.83s 26.51s
1726 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1728 Keep in mind that non-namelookup related operations dominate above times.
1729 It was just a common complain that using NIS+ unpacking the kernel is
1732 [1] The old nscd implementation is not available anymore since it was
1733 distributed with glibc up to version 2.0.98 and thus is now replaced.
1735 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1737 * Mark Kettenis provided a Hesiod NSS module.
1739 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1740 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1742 * rcmd can now handle netgroups (Dick Streefland).
1744 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1747 * Support for the IPv6 protocol has been added to the socket API, as per the
1748 latest draft standards.
1750 * Support for Linux 2.2 has been added.
1752 * Interface changes relative to the latest 2.0.x release:
1753 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1754 addseverity NEW: Unix98
1755 alphasort64 NEW: LFS
1756 argp_err_exit_status NEW: argp, GNU ext
1757 argp_error NEW: argp, GNU ext
1758 argp_failure NEW: argp, GNU ext
1759 argp_help NEW: argp, GNU ext
1760 argp_parse NEW: argp, GNU ext
1761 argp_program_bug_address NEW: argp, GNU ext
1762 argp_program_version NEW: argp, GNU ext
1763 argp_program_version_hook NEW: argp, GNU ext
1764 argp_state_help NEW: argp, GNU ext
1765 argp_usage NEW: argp, GNU ext
1766 authdes_create NEW: Secure RPC
1767 authdes_getucred NEW: Secure RPC
1768 authdes_pk_create NEW: Secure RPC
1769 backtrace NEW: GNU ext.
1770 backtrace_symbols NEW: GNU ext.
1771 backtrace_symbols_fd NEW: GNU ext.
1773 cacosf NEW: ISO C 9x
1774 cacosh NEW: ISO C 9x
1775 cacoshf NEW: ISO C 9x
1776 cacoshl NEW: ISO C 9x
1777 cacosl NEW: ISO C 9x
1784 casinf NEW: ISO C 9x
1785 casinh NEW: ISO C 9x
1786 casinhf NEW: ISO C 9x
1787 casinhl NEW: ISO C 9x
1788 casinl NEW: ISO C 9x
1790 catanf NEW: ISO C 9x
1791 catanh NEW: ISO C 9x
1792 catanhf NEW: ISO C 9x
1793 catanhl NEW: ISO C 9x
1794 catanl NEW: ISO C 9x
1795 cbc_crypt NEW: Secure RPC
1799 ccoshf NEW: ISO C 9x
1800 ccoshl NEW: ISO C 9x
1806 cimagf NEW: ISO C 9x
1807 cimagl NEW: ISO C 9x
1808 clearerr_locked REMOVED
1809 clntunix_create NEW: sunrpc ext
1811 clog10 NEW: ISO C 9x
1812 clog10f NEW: ISO C 9x
1813 clog10l NEW: ISO C 9x
1823 cprojf NEW: ISO C 9x
1824 cprojl NEW: ISO C 9x
1826 crealf NEW: ISO C 9x
1827 creall NEW: ISO C 9x
1832 csinhf NEW: ISO C 9x
1833 csinhl NEW: ISO C 9x
1836 csqrtf NEW: ISO C 9x
1837 csqrtl NEW: ISO C 9x
1841 ctanhf NEW: ISO C 9x
1842 ctanhl NEW: ISO C 9x
1844 des_setparity NEW: Secure RPC
1845 ecb_crypt NEW: Secure RPC
1846 endutxent NEW: Unix98
1848 exp10f NEW: ISO C 9x
1849 exp10l NEW: ISO C 9x
1853 fattach NEW: STREAMS
1854 fdetach NEW: STREAMS
1858 feclearexcept NEW: ISO C 9x
1859 fegetenv NEW: ISO C 9x
1860 fegetexceptflag NEW: ISO C 9x
1861 fegetround NEW: ISO C 9x
1862 feholdexcept NEW: ISO C 9x
1864 feraiseexcept NEW: ISO C 9x
1865 ferror_locked REMOVED
1866 fesetenv NEW: ISO C 9x
1867 fesetexceptflag NEW: ISO C 9x
1868 fesetround NEW: ISO C 9x
1869 fetestexcept NEW: ISO C 9x
1870 feupdateenv NEW: ISO C 9x
1871 fflush_locked REMOVED
1875 fgets_unlocked NEW: GNU ext.
1876 fileno_locked REMOVED
1888 fputc_locked REMOVED
1889 fputs_unlocked NEW: GNU ext.
1890 fread_unlocked NEW: GNU ext.
1895 fstatvfs NEW: Unix98
1899 ftruncate64 NEW: LFS
1901 fwrite_unlocked NEW: GNU ext.
1902 gai_strerror NEW: IPv6
1906 getchar_locked REMOVED
1908 getdate_err NEW: Unix98
1909 getdate_r NEW: GNU ext.
1911 getnameinfo NEW: IPv6
1912 getnetname NEW: Secure RPC
1913 getpmsg NEW: STREAMS
1914 getpt NEW: Unix98 PTY
1915 getrlimit64 NEW: LFS
1916 getutxent NEW: Unix98
1917 getutxid NEW: Unix98
1918 getutxline NEW: Unix98
1919 glob64 NEW: GNU ext.
1920 globfree64 NEW: GNU ext.
1921 gnu_get_libc_release NEW: GNU ext.
1922 gnu_get_libc_version NEW: GNU ext.
1923 grantpt NEW: Unix98 PTY
1924 host2netname NEW: Secure RPC
1926 iconv_close NEW: iconv
1927 iconv_open NEW: iconv
1928 if_freenameindex NEW: IPv6
1929 if_indextoname NEW: IPv6
1930 if_nameindex NEW: IPv6
1931 if_nametoindex NEW: IPv6
1932 in6addr_any NEW: IPv6
1933 in6addr_loopback NEW: IPv6
1934 inet6_isipv4mapped NEW: IPv6
1935 isastream NEW: STREAMS
1936 iswblank NEW: GNU ext.
1937 key_decryptsession NEW: Secure RPC
1938 key_decryptsession_pk NEW: Secure RPC
1939 key_encryptsession NEW: Secure RPC
1940 key_encryptsession_pk NEW: Secure RPC
1941 key_gendes NEW: Secure RPC
1942 key_get_conv NEW: Secure RPC
1943 key_secretkey_is_set NEW: Secure RPC
1944 key_setnet NEW: Secure RPC
1945 key_setsecret NEW: Secure RPC
1946 llrint NEW: ISO C 9x
1947 llrintf NEW: ISO C 9x
1948 llrintl NEW: ISO C 9x
1949 llround NEW: ISO C 9x
1950 llroundf NEW: ISO C 9x
1951 llroundl NEW: ISO C 9x
1956 lrintf NEW: ISO C 9x
1957 lrintl NEW: ISO C 9x
1958 lround NEW: ISO C 9x
1959 lroundf NEW: ISO C 9x
1960 lroundl NEW: ISO C 9x
1962 makecontext NEW: Unix98
1963 mempcpy NEW: GNU ext.
1966 modify_ldt NEW: kernel
1970 nearbyint NEW: ISO C 9x
1971 nearbyintf NEW: ISO C 9x
1972 nearbyintl NEW: ISO C 9x
1973 netname2host NEW: Secure RPC
1974 netname2user NEW: Secure RPC
1975 nexttoward NEW: ISO C 9x
1976 nexttowardf NEW: ISO C 9x
1977 nexttowardl NEW: ISO C 9x
1981 passwd2des NEW: Secure RPC
1983 pow10f NEW: GNU ext.
1984 pow10l NEW: GNU ext.
1987 printf_size NEW: GNU ext.
1988 printf_size_info NEW: GNU ext.
1989 profil_counter REMOVED
1990 pthread_mutexattr_getkind_np REPLACED
1991 pthread_mutexattr_setkind_np REPLACED
1992 ptsname NEW: Unix98 PTY
1993 ptsname_r NEW: Unix98 PTY
1995 putchar_locked REMOVED
1996 putgrent NEW: GNU ext.
1998 putpmsg NEW: STREAMS
1999 pututxline NEW: Unix98
2003 readdir64_r NEW: LFS
2004 remquo NEW: ISO C 9x
2005 remquof NEW: ISO C 9x
2006 remquol NEW: ISO C 9x
2008 roundf NEW: ISO C 9x
2009 roundl NEW: ISO C 9x
2011 scalbln NEW: ISO C 9x
2012 scalblnf NEW: ISO C 9x
2013 scalblnl NEW: ISO C 9x
2015 sendfile NEW: kernel
2016 setcontext NEW: Unix98
2017 setrlimit64 NEW: LFS
2018 setutxent NEW: Unix98
2020 sigignore NEW: Unix98
2021 sigqueue NEW: POSIX.1b
2022 sigrelse NEW: Unix98
2023 sigset NEW: POSIX.1b
2024 sigtimedwait NEW: POSIX.1b
2025 sigwaitinfo NEW: POSIX.1b
2026 sincos NEW: GNU ext.
2027 sincosf NEW: GNU ext.
2028 sincosl NEW: GNU ext.
2032 strcasestr NEW: GNU ext.
2033 strtoimax NEW: ISO C 9x
2034 strtoumax NEW: ISO C 9x
2035 strverscmp NEW: GNU ext.
2036 svcauthdes_stats NEW: Secure RPC
2037 svcunix_create NEW: sunrpc etx
2038 svcunixfd_create NEW: sunrpc ext
2039 swapcontext NEW: Unix98
2040 tcgetsid NEW: Unix98 PTY
2041 tdestroy NEW: GNU ext.
2042 tgamma NEW: ISO C 9x
2043 tgammaf NEW: ISO C 9x
2044 tgammal NEW: ISO C 9x
2048 truncf NEW: ISO C 9x
2049 truncl NEW: ISO C 9x
2051 unlockpt NEW: Unix98 PTY
2052 updwtmpx NEW: Unix98
2053 user2netname NEW: Secure RPC
2054 utmpxname NEW: Unix98
2055 versionsort NEW: GNU ext.
2056 versionsort64 NEW: GNU ext.
2058 wcscasecmp NEW: GNU ext.
2059 wcsncasecmp NEW: GNU ext.
2060 wcsnlen NEW: GNU ext.
2061 wcstoimax NEW: ISO C 9x
2062 wcstoll NEW: ISO C 9x
2063 wcstoull NEW: ISO C 9x
2064 wcstoumax NEW: ISO C 9x
2066 wordexp NEW: POSIX.2
2067 wordfree NEW: POSIX.2
2068 write_profiling REMOVED
2069 xdecrypt NEW: Secure RPC
2070 xdr_authdes_cred NEW: Secure RPC
2071 xdr_authdes_verf NEW: Secure RPC
2072 xdr_cryptkeyarg NEW: Secure RPC
2073 xdr_cryptkeyarg2 NEW: Secure RPC
2074 xdr_cryptkeyres NEW: Secure RPC
2075 xdr_getcredres NEW: Secure RPC
2076 xdr_key_netstarg NEW: Secure RPC
2077 xdr_key_netstres NEW: Secure RPC
2078 xdr_keybuf NEW: Secure RPC
2079 xdr_keystatus NEW: Secure RPC
2080 xdr_netnamestr NEW: Secure RPC
2081 xdr_sizeof NEW: Secure RPC
2082 xdr_unixcred NEW: sunrpc ext
2083 xencrypt NEW: Secure RPC
2084 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2095 * inet_ntoa is thread-safe
2097 * updwtmp is moved from libutil to libc
2099 * rewrite of cbrt function
2101 * update of timezone data
2115 * add atoll function
2117 * fix complex problems in Berkeley DB code
2119 * fix math functions
2123 * fixed lots of header problems (especially Linux/GNU specific)
2125 * dynamic loader preserves all registers
2127 * Roland McGrath provided support for handling of auxiliary objects in
2128 the ELF dynamic loader.
2130 * support for parallel builds is improved
2134 * GNU extensions are no longer declared by default. To enable them you
2135 must define the macro `_GNU_SOURCE' in your program or compile with
2138 * The library has changed from using GNU ld symbol aliases to using weak
2139 symbols where available. The ELF object file format supports weak
2140 symbols; GNU ld also supports weak symbols in the a.out format. (There
2141 is also now support for other GNU ld extensions in ELF. Use the
2142 `--with-elf' option to configure to indicate you have ELF, and
2143 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2144 of many files which contained only symbol aliases, reducing the size of
2145 the source and the compiled library; many other files were renamed to
2146 less cryptic names previously occupied by the symbol alias files.
2147 There is a new header file <elf.h> for programs which operate on
2148 files in the ELF format.
2150 * Converted to Autoconf version 2, so `configure' has more options.
2151 Run `configure --help' to see the details.
2153 * The library can now be configured to build profiling, highly-optimized
2154 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2155 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2156 `configure' enable building these extra libraries. The shared library is
2157 built by default when using both ELF and GNU ld. When shared libraries
2158 are enabled, the new library `-ldl' is available for arbitrary run-time
2159 loading of shared objects; its interface is defined in <dlfcn.h>. The
2160 new header file <link.h> gives access to the internals of the run-time
2161 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2162 application of same name on other systems and it provides information
2163 about dynamically linked binaries.
2165 * The C library now provides the run-time support code for profiling
2166 executables compiled with `-pg'. Programs can control the profiling code
2167 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2168 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2169 the support for this file format was contributed by David Mosberger-Tang.
2171 * The math code has been replaced with a math library based on fdlibm from
2172 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2173 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2174 functions. The math functions now reside in a separate library, so
2175 programs using them will need to use `-lm' their linking commands.
2177 * John C. Bowman contributed optimized ix87 assembler inline functions.
2179 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2180 mechanism similar to that found in Solaris 2. This is now used for the
2181 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2182 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2183 file controls what services are used for each individual database. This
2184 works by loading shared libraries with names specified in `nsswitch.conf',
2185 so service modules can be changed or added at any time without even
2186 relinking any program. Currently there are the file, db, and NIS based
2187 NSS services available.
2189 * The new functions `strtoq' and `strtouq' parse integer values from
2190 strings, like `strtol' and `strtoul', but they return `long long int' and
2191 `unsigned long long int' values, respectively (64-bit quantities).
2193 * The new functions `strtof' and `strtold' parse floating-point values from
2194 strings, like `strtod', but they return `float' and `long double' values,
2195 respectively (on some machines `double' and `long double' are the same).
2197 * Ulrich Drepper has contributed new implementations of the floating-point
2198 printing and reading code used in the `printf' family of functions and
2199 `strtod', `strtof', and `strtold'. These new functions are perfectly
2200 accurate, and much faster than the old ones.
2202 * The implementation of the POSIX locale model was completely rewritten by
2203 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2204 to compile the POSIX locale definition.
2206 * The former dummy implementations of the strcoll and strxfrm function are
2207 now replaced by fully functional code contributed by Ulrich Drepper. The
2208 collation information comes from the POSIX locale definitions.
2210 * The new header <langinfo.h> defines an interface for accessing
2211 various locale-dependent data (using the locale chosen with `setlocale').
2213 * Ulrich Drepper has contributed a new suite of functions for operation on
2214 wide-character and multibyte-character strings, in <wchar.h>;
2215 and classification and case conversion of wide characters, in <wctype.h>.
2216 These new functions are conforming to the ISO C, Amendement 1 specification.
2218 * There is now a second implementation of the standard I/O library available.
2219 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2220 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2222 * You can now use positional parameter specifications in format strings
2223 for the `printf' and `scanf' families of functions. For example,
2224 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2225 ``Number 6, Mr Jones''. This is mainly useful when providing different
2226 format strings for different languages, whose grammars may dictate
2227 different orderings of the values being printed. To support this
2228 feature, the interface for `register_printf_handler' has changed; see
2229 the header file <printf.h> for details.
2231 * The `printf' and `scanf' families of functions now understand a new
2232 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2233 to group numbers as indicated by the locale; for `scanf' and friends, this
2234 says to accept as valid only a number with all the proper grouping
2235 separators in the right places. In the default "C" locale, numbers are
2236 not grouped; but locales for specific countries will define the usual
2237 conventions (i.e. separate thousands with `,' in the US locale).
2239 * The pgrp functions have been regularized, slightly incompatibly but much
2240 less confusingly. The core functions are now `getpgid' and `setpgid',
2241 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2242 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2243 provided for compatibility. There is no longer an incompatible `getpgrp'
2244 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2246 * The new header file <fts.h> and suite of functions simplify programs that
2247 operate on directory trees. This code comes from 4.4 BSD.
2249 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2250 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2251 NSS scheme used in glibc.
2253 * There is a new malloc debugging hook `__memalign_hook'.
2255 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2256 `unsigned int' in <sys/types.h>. These are for compatibility only and
2257 their use is discouraged.
2259 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2260 done differently, so that it works even without GNU ld.
2262 * New function `euidaccess' checks allowed access to a file like `access',
2263 but using the effective IDs instead of the real IDs.
2265 * The time zone data files have been updated for the latest and greatest
2266 local time conventions of the countries of the world.
2268 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2271 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2272 for formatting floating-point numbers. They are provided only for
2273 compatibility; new programs should use `sprintf' instead. There are
2274 also equivalent function for the `long double' floating-point type and
2275 all functions also exist in a reentrant form.
2277 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2278 functions for maintaining the login-record files (primarily of use to
2279 system programs such as `login'), and convenient functions for
2280 allocating and initializing a pseudo-terminal (pty) device.
2282 * Ulrich Drepper has contributed new support for System V style
2283 shared memory and IPC on systems that support it.
2285 * Ulrich Drepper has contributed several miscellaneous new functions found
2286 in System V: The `hsearch' family of functions provide an effective
2287 implementation of hash tables; `a64l' and `l64a' provide a very simple
2288 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2291 * Ulrich Drepper has contributed new reentrant counterparts for the
2292 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2294 * Ulrich Drepper has contributed new, highly-optimized versions of several
2295 string functions for the i486/Pentium family of processors.
2297 * Ulrich Drepper has updated the Linux-specific code, based largely
2298 on work done in Hongjiu Lu's version of GNU libc for Linux.
2299 The GNU library now supports Linux versions 2.0.10 and later,
2300 using the ELF object file format (i[3456]86-*-linux).
2302 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2304 * David Mosberger-Tang and Richard Henderson have ported the C library
2305 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2306 dynamic linking support for ELF/Alpha.
2308 * Richard Henderson contributed several Alpha optimized assembler function
2309 for arithmetic and string handling.
2311 * Ulrich Drepper has contributed a new set of message catalog functions to
2312 support multiple languages using the <libintl.h> interface, for use with
2313 his new package GNU gettext. Translation volunteers have contributed
2314 catalogs of the library's messages in Spanish, German, and Korean.
2316 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2317 program and the `catgets' function for reading the catalog files it
2318 creates. (The <libintl.h> interface is preferred; we include the
2319 <nl_types.h> interface using `catgets' only for source compatibility with
2320 programs already written to use it.)
2322 * New header file <values.h> gives SVID-compatible names for <limits.h>
2325 * Various new macros, declarations, and small header files for compatibility
2328 * New function `group_member' is a convenient way to check if a process has
2329 a given effective group ID.
2331 * When using GCC 2.7 and later, the socket functions are now declared in a
2332 special way so that passing an argument of type `struct sockaddr_in *',
2333 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2334 `struct sockaddr *' type, does not generate a type-clash warning.
2336 * New function `error' declared in header file <error.h> is a convenient
2337 function for printing error messages and optionally exiting; this is the
2338 canonical function used in GNU programs. The new functions `err', `warn',
2339 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2340 doing the same thing.
2342 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2343 POSIX.2 `glob' function to do ~ and {...} expansion.
2345 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2346 `clearenv' which is used in POSIX.9 is also available.
2348 * New function `getsid' returns session ID number on systems that support it.
2350 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2351 files <db.h> and <mpool.h> provide a rich set of functions for several
2352 types of simple databases stored in memory and in files, and <ndbm.h> is
2353 an old `ndbm'-compatible interface using the `db' functions. Link with
2354 `-ldb' to get these functions.
2356 * New macro `strdupa' copies a string like `strdup', but uses local stack
2357 space from `alloca' instead of dynamic heap space from `malloc'.
2359 * New function `strnlen' is like `strlen' but searches only a given maximum
2360 number of characters for the null terminator. `stpncpy', `strndup' and
2361 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2364 * New function `statfs' in header <sys/statfs.h>.
2366 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2367 provide convenient functions for operating on blocks of null-terminated
2370 * A new suite of functions in <utmp.h> handle all the details of reading
2371 and writing the utmp file.
2373 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2376 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2377 completely POSIX compliant and also implemented the extended functionality
2378 to handle alternate digit representation and alternate era date formats.
2380 * Ulrich Drepper provided an implementation of the `strptime' function
2381 defined in XPG4.2 which transforms a string into a `struct tm' value.
2383 * Paul Eggert provided the tzselect shell script as part of the timezone
2384 code. The shell script makes it easy to select the correct timezone
2387 * The implementation of the malloc family of functions is completely replaced
2388 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2389 The implementation uses the mmap function (if available) and it is
2390 optimized for the use in multi threaded programs.
2392 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2393 functions. This new functionality is usable by specifying a special
2394 salt string and it is compatible with implementation on *BSD systems.
2396 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2397 `getsubopt' to handle second level command line options, `bsd_signal'
2398 to access BSD style `signal' functionality, the obsolete `regexp' style
2401 * the `lchown' function is available on system which support this
2404 * The implementation of the shadow password handling function was contributed
2407 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2409 * POSIX.1g support was added. The <sys/select.h> header is available,
2410 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2411 implementation of `getaddrinfo'.
2415 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2417 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2418 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2420 * The new function `daemon' from 4.4 BSD is useful for server programs that
2421 want to put themselves in the background.
2423 * Joel Sherrill has contributed support for several standalone boards that
2424 run without an operating system.
2426 * `printf', `scanf' and friends now accept a `q' type modifier for long
2427 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2429 * All of the code taken from BSD (notably most of the math and networking
2430 routines) has been updated from the BSD 4.4-Lite release.
2432 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2434 * The new functions `getdomainname' and `setdomainname' fetch or change the
2435 YP/NIS domain name. These are system calls which exist on systems which
2438 * The time zone data files have been updated for the latest international
2441 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2442 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2446 * The C library now includes support for Sun RPC, from Sun's free
2447 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2448 are included. (There is still no support for YP.)
2450 * Tom Quinn has contributed a port of the C library to SGI machines running
2451 Irix 4 (mips-sgi-irix4).
2453 * The new `lockf' function is a simplified interface to the locking
2454 facilities of `fcntl', included for compatibility.
2456 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2458 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2460 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2463 * The error message printed by `assert' for a failed assertion now includes
2464 the name of the program (if using GNU ld) and the name of the calling
2465 function (with versions of GCC that support this).
2467 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2469 * The library now includes the <sys/mman.h> header file and memory
2470 management functions `mmap', `munmap', `mprotect', `msync', and
2471 `madvise', on systems that support those facilities.
2473 * The interface for `mcheck' has changed slightly: the function called to
2474 abort the program when an allocation inconsistency is detected now takes
2475 an argument that indicates the type of failure. The new function
2476 `mprobe' lets you request a consistency check for a particular block at
2477 any time (checks are normally done only when you call `free' or `realloc'
2480 * It is now possible to easily cross-compile the C library, building on one
2481 system a library to run on another machine and/or operating system. All
2482 you need to do is set the variable `HOST_CC' in `configparms' to the
2483 native compiler for programs to run on the machine you are building on (a
2484 few generator programs are used on Unix systems); set `CC' to the
2487 * The new function `fexecve' (only implemented on the GNU system) executes
2488 a program file given a file descriptor already open on the file.
2492 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2493 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2495 * You can set the variable `libprefix' in `configparms' to specify a prefix
2496 to be prepended to installed library files; this makes it easy to install
2497 the GNU C library to be linked as `-lgnuc' or whatever.
2499 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2500 copies a limited number of characters from a string, and returns the
2501 address of the last character written.
2503 * You no longer need to check for whether the installed `stddef.h' is
2504 compatible with the GNU C library. configure now checks for you.
2506 * You can now define a per-stream `fileno' function to convert the
2507 stream's cookie into an integral file descriptor.
2509 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2510 allocates zero bytes of storage, and returns a unique pointer which
2511 you can pass to `realloc' or `free'. The behavior is undefined if
2512 you dereference this pointer.
2514 * The C library now runs on Sony NEWS m68k machines running either
2515 NewsOS 3 or NewsOS 4.
2517 * The new `syscall' function is a system-dependent primitive function
2518 for invoking system calls. It has the canonical behavior on Unix
2519 systems, including unreliable return values for some calls (such as
2520 `pipe', `fork' and `getppid').
2522 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2523 to `EAGAIN', which is the preferred name. On systems whose kernels
2524 use two distinct codes, the C library now translates EWOULDBLOCK to
2525 EAGAIN in every system call function.
2529 * The GNU C Library Reference Manual is now distributed with the library.
2530 `make dvi' will produce a DVI file of the printed manual.
2531 `make info' will produce Info files that you can read on line using C-h i
2532 in Emacs or the `info' program.
2533 Please send comments on the manual to bug-glibc-manual@gnu.org.
2535 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2537 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2539 * Jason Merrill has contributed a port to the Sequent Symmetry running
2540 Dynix version 3 (i386-sequent-dynix).
2542 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2543 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2545 * New function `memory_warnings' lets you arrange to get warnings when
2546 malloc is running out of memory to allocate, like Emacs gives you.
2548 * The C library now contains the relocating allocator used in Emacs 19 for
2549 its editing buffers. This allocator (ralloc) minimizes allocation
2550 overhead and fragmentation by moving allocated regions around whenever it
2551 needs to. You always refer to a ralloc'd region with a "handle" (a
2552 pointer to a pointer--an object of type `void **').
2554 * There is a new `printf' format: `%m' gives you the string corresponding
2555 to the error code in `errno'.
2557 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2558 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2559 pass, the `a' modifier says to fill in a `char **' you pass with a
2562 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2563 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2564 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2566 * `mkstemp' is a traditional Unix function to atomically create and open a
2567 uniquely-named temporary file.
2571 * The standard location for the file that says what the local timezone is
2572 has changed again. It is now `/usr/local/etc/localtime' (or more
2573 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2575 * The distribution no longer contains any files with names longer than 14
2578 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2579 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2581 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2585 * The configuration process has changed quite a bit. The `configure'
2586 script is now used just like the configuration scripts for other GNU
2587 packages. The `sysdeps' directory hierarchy is much rearranged.
2588 The file `INSTALL' explains the new scheme in detail.
2590 * The header files no longer need to be processed into ANSI C and
2591 traditional C versions. There is just one set of files to install, and
2592 it will work with ANSI or old C compilers (including `gcc -traditional').
2594 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2595 MIPS DECStation running Ultrix 4.
2597 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2598 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2599 made itself into a shared library.
2601 * Yet further improved support for the i386, running 4.3 BSD-like systems
2602 (such as Mach 3 with the Unix single-server), or System V.
2604 * New function `strncasecmp' to do case-insensitive string comparison
2605 with limited length.
2607 * New function `strsep' is a reentrant alternative to `strtok'.
2609 * New functions `scandir' and `alphasort' for searching directories.
2611 * New function `setenv' is a better interface to `putenv'.
2613 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2614 function for traversing a directory tree.
2616 * The GNU obstack package is now also part of the C library.
2617 The new function `open_obstack_stream' creates a stdio stream that
2618 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2619 formatted output directly to an obstack.
2621 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2622 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2624 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2626 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2627 things to your strings.
2629 * There are some new test programs: test-fseek, testmb, and testrand.
2631 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2632 These ports are not finished, but are a good starting place for really
2633 supporting those systems.
2635 * `/etc/localtime' is now the standard location for the file that says what
2636 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2637 This follows the general principle that `/etc' is the place for all local
2638 configuration files.
2640 * The C library header files now use `extern "C"' when used by the C++
2641 compiler, so the C library should now work with C++ code.
2643 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2644 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2647 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2648 function which uses the `merge sort' algorithm, and is said to be
2649 significantly faster than the old GNU `qsort' function. Merge sort is
2650 now the standard `qsort' function. The new algorithm can require a lot
2651 of temporary storage; so, the old sorting function is called when the
2652 required storage is not available.
2654 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2655 provides the Unix `crypt' function, plus some other entry points.
2657 * The code and header files taken from 4.4 BSD have been updated with the
2658 latest files released from Berkeley.
2660 ----------------------------------------------------------------------
2661 Copyright information:
2663 Copyright (C) 1992-2015 Free Software Foundation, Inc.
2665 Permission is granted to anyone to make or distribute verbatim copies
2666 of this document as received, in any medium, provided that the
2667 copyright notice and this permission notice are preserved,
2668 thus giving the recipient permission to redistribute in turn.
2670 Permission is granted to distribute modified versions
2671 of this document, or of portions of it,
2672 under the above conditions, provided also that they
2673 carry prominent notices stating who last changed them.
2676 version-control: never