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, 14958, 15319, 15467,
13 15790, 15969, 16159, 16339, 16351, 16352, 16512, 16560, 16704, 16783,
14 16850, 17053, 17090, 17195, 17269, 17293, 17322, 17523, 17542, 17569,
15 17581, 17588, 17596, 17620, 17621, 17628, 17631, 17692, 17711, 17715,
16 17776, 17779, 17792, 17836, 17912, 17916, 17930, 17932, 17944, 17949,
17 17964, 17965, 17967, 17969, 17978, 17987, 17991, 17996, 17998, 17999,
18 18007, 18019, 18020, 18029, 18030, 18032, 18036, 18038, 18039, 18042,
19 18043, 18046, 18047, 18049, 18068, 18080, 18093, 18100, 18104, 18110,
20 18111, 18116, 18125, 18128, 18138, 18185, 18196, 18197, 18206, 18210,
21 18211, 18217, 18220, 18221, 18234, 18244, 18247, 18287, 18319, 18324,
22 18333, 18346, 18397, 18409, 18410, 18412, 18418, 18422, 18434, 18444,
25 * Cache information can be queried via sysconf() function on s390 e.g. with
26 _SC_LEVEL1_ICACHE_SIZE as argument.
28 * A buffer overflow in gethostbyname_r and related functions performing DNS
29 requests has been fixed. If the NSS functions were called with a
30 misaligned buffer, the buffer length change due to pointer alignment was
31 not taken into account. This could result in application crashes or,
32 potentially arbitrary code execution, using crafted, but syntactically
33 valid DNS responses. (CVE-2015-1781)
35 * The time zone file parser has been made more robust against crafted time
36 zone files, avoiding heap buffer overflows related to the processing of
37 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
38 large time zone data files. Overly long time zone specifiers in the TZ
39 variable no longer result in stack overflows and crashes.
41 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
42 for LD and GD on x86 and x86-64, has been implemented. You will need
43 binutils-2.24 or later to enable this optimization.
45 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
46 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
47 Hat). These updates cause user visible changes, such as the fix for bug
50 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
51 and getXXbyYY NSS calls for the same database, causing a denial-of-service
52 condition in some applications.
56 * The following bugs are resolved with this release:
58 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
59 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
60 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
61 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
62 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
63 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
64 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
65 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
66 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
67 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
70 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
71 too little memory for the to-be-scanned arguments and overflow the
72 allocated buffer. The implementation now correctly computes the required
73 buffer size when using malloc, and switches to malloc from alloca as
76 * A new semaphore algorithm has been implemented in generic C code for all
77 machines. Previous custom assembly implementations of semaphore were
78 difficult to reason about or ensure that they were safe. The new version
79 of semaphore supports machines with 64-bit or 32-bit atomic operations.
80 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
81 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
83 * Port to Altera Nios II has been contributed by Mentor Graphics.
85 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
86 implementations for powerpc64/powerpc64le.
87 Implemented by Adhemerval Zanella (IBM).
89 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
90 and powerpc64le. This may improve lock scaling of existing programs on
91 HTM capable systems. The lock elision code is only enabled with
92 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
93 powerpc will issue a transaction abort on every syscall to avoid side
94 effects being visible outside transactions.
96 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
97 AArch64. Contributed by ARM Ltd.
99 * i386 memcpy functions optimized with SSE2 unaligned load/store.
101 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
102 under certain input conditions resulting in the execution of a shell for
103 command substitution when the application did not request it. The
104 implementation now checks WRDE_NOCMD immediately before executing the
105 shell and returns the error WRDE_CMDSUB as expected.
107 * CVE-2012-3406 printf-style functions could run into a stack overflow when
108 processing format strings with a large number of format specifiers.
110 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
111 infinite loop if the DNS response contained a PTR record of an unexpected
114 * The minimum GCC version that can be used to build this version of the GNU
115 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
116 still be used to compile programs using the GNU C Library.
118 * The GNU C Library is now built with -Werror by default. This can be
119 disabled by configuring with --disable-werror.
121 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
123 * The obsolete sigvec function has been removed. This was the original
124 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
125 programs have been using instead for about 25 years. Of course, ABI
126 compatibility for old binaries using sigvec remains intact.
128 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
129 with newer versions of bison.
131 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
132 The original MIPS o32 hard-float ABI requires an FPU where double-precision
133 registers overlay two consecutive single-precision registers. MIPS32R2
134 introduced a new FPU mode (FR=1) where double-precision registers extend the
135 corresponding single-precision registers which is incompatible with the
136 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
137 require the use of FR=1 making a transition necessary. New o32 ABI
138 extensions enable users to migrate over time from the original o32 ABI
139 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
140 tracks the ABI of any loaded object and verifies that new objects are
141 compatible. Mode transitions will also be requested as required and
142 unsupportable objects will be rejected. The ABI checks include both soft and
143 hard float ABIs for o32, n32 and n64.
145 GCC 5 with GNU binutils 2.25 onwards:
146 It is strongly recommended that all o32 system libraries are built using the
147 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
148 with the original and all new o32 ABI extensions. Configure a MIPS GCC
149 compiler using --with-fp-32=xx to set this by default.
153 * The following bugs are resolved with this release:
155 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
156 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
157 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
158 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
159 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
160 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
161 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
162 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
163 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
164 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
165 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
166 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
167 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
168 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
169 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
171 * Reverted change of ABI data structures for s390 and s390x:
172 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
173 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
174 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
175 are preserved pointing straight to the same implementation as the old ones.
176 Given that, new callers will simply provide a too-big buffer to these
177 functions. Any applications/libraries out there that embed jmp_buf or
178 ucontext_t in an ABI-relevant data structure that have already been rebuilt
179 against 2.19 headers will have to rebuilt again. This is necessary in any
180 case to revert the breakage in their ABI caused by the glibc change.
182 * Support for file description locks is added to systems running the
183 Linux kernel. The standard file locking interfaces are extended to
184 operate on file descriptions, not file descriptors, via the use of
185 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
186 are associated with an open file instead of a process.
188 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
190 * The minimum Linux kernel version that this version of the GNU C Library
191 can be used with is 2.6.32.
193 * Running the testsuite no longer terminates as soon as a test fails.
194 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
195 with PASS or FAIL lines for individual tests. A summary of the results is
196 printed, including a list of failing lists, and "make check" exits with
197 error status if there were any unexpected failures. "make check
198 stop-on-test-failure=y" may be used to keep the old behavior.
200 * The am33 port, which had not worked for several years, has been removed
203 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
204 supported; they now act the same as _DEFAULT_SOURCE (but generate a
205 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
206 conflicted with POSIX (support for which was removed in 2.19), the
207 interfaces those macros enabled remain available when compiling with
208 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
211 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
213 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
214 This may improve lock scaling of existing programs on TX capable systems.
215 The lock elision code is only built with --enable-lock-elision=yes and
216 then requires a GCC version supporting the TX builtins. With lock elision
217 default mutexes are elided via __builtin_tbegin, if the cpu supports
218 transactions. By default lock elision is not enabled and the elision code
221 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
222 copy the path argument. This allowed programs to cause posix_spawn to
223 deference a dangling pointer, or use an unexpected pathname argument if
224 the string was modified after the posix_spawn_file_actions_addopen
227 * All supported architectures now use the main glibc sysdeps directory
228 instead of some being in a separate "ports" directory (which was
229 distributed separately before glibc 2.17).
231 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
232 On configurations that support it (all Linux configurations), it's now
233 used regardless of the --enable-add-ons switch to configure. It is no
234 longer possible to build such configurations without pthreads support.
236 * Locale names, including those obtained from environment variables (LANG
237 and the LC_* variables), are more tightly checked for proper syntax.
238 setlocale will now fail (with EINVAL) for locale names that are overly
239 long, contain slashes without starting with a slash, or contain ".." path
240 components. (CVE-2014-0475) Previously, some valid locale names were
241 silently replaced with the "C" locale when running in AT_SECURE mode
242 (e.g., in a SUID program). This is no longer necessary because of the
245 * On x86-64, the dynamic linker's lazy-binding support is now compatible
246 with application code using Intel MPX instructions. (With all previous
247 versions, the MPX register state could be clobbered when making calls
248 into or out of a shared library.) Note that while the new dynamic
249 linker is compatible with all known x86 hardware whether or not it
250 supports Intel MPX, some x86 instruction-set emulators might fail to
251 handle the new instruction encodings. This is known to affect Valgrind
252 versions up through 3.9 (but will be fixed in the forthcoming 3.10
253 release), and might affect other tools that do instruction emulation.
255 * Support for loadable gconv transliteration modules has been removed.
256 The support for transliteration modules has been non-functional for
257 over a decade, and the removal is prompted by security defects. The
258 normal gconv conversion modules are still supported. Transliteration
259 with //TRANSLIT is still possible, and the //IGNORE specifier
260 continues to be supported. (CVE-2014-5119)
262 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
263 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
264 resulting a denial-of-service security vulnerability in applications which
265 use functions related to iconv. (CVE-2014-6040)
269 * The following bugs are resolved with this release:
271 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
272 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
273 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
274 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
275 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
276 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
277 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
278 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
279 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
280 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
281 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
282 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
283 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
284 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
285 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
286 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
287 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
288 16431, 16453, 16474, 16506, 16510, 16529
290 * Slovenian translations for glibc messages have been contributed by the
291 Translation Project's Slovenian team of translators.
293 * The public headers no longer use __unused nor __block. This change is to
294 support compiling programs that are derived from BSD sources and use
295 __unused internally, and to support compiling with Clang's -fblock
296 extension which uses __block.
298 * CVE-2012-4412 The strcoll implementation caches indices and rules for
299 large collation sequences to optimize multiple passes. This cache
300 computation may overflow for large collation sequences and may cause a
301 stack or buffer overflow. This is now fixed to use a slower algorithm
302 which does not use a cache if there is an integer overflow.
304 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
305 rules for large collation sequences to optimize multiple passes and falls
306 back to alloca if malloc fails, resulting in a possible stack overflow.
307 The implementation now falls back to an uncached collation sequence lookup
310 * CVE-2013-4788 The pointer guard used for pointer mangling was not
311 initialized for static applications resulting in the security feature
312 being disabled. The pointer guard is now correctly initialized to a
313 random value for static applications. Existing static applications need
314 to be recompiled to take advantage of the fix (bug 15754).
316 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
317 to the d_name member of struct dirent, or omit the terminating NUL
318 character. (Bugzilla #14699).
320 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
321 aligned_alloc functions could allocate too few bytes or corrupt the
322 heap when passed very large allocation size values (Bugzilla #15855,
325 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
326 for AF_INET6 has been fixed (Bugzilla #16072).
328 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
329 pap_CW, quz_PE, the_NP.
331 * Substantially revised locales: gd_GB, ht_HT
333 * The LC_ADDRESS field was updated to support country_car for almost all
336 * ISO 1427 definitions were updated.
338 * ISO 3166 definitions were updated.
340 * The localedef utility now supports --big-endian and --little-endian
341 command-line options to generate locales for a different system from that
342 for which the C library was built.
344 * Binary locale files now only depend on the endianness of the system for
345 which they are generated and not on other properties of that system. As a
346 consequence, binary files generated with new localedef may be incompatible
347 with old versions of the GNU C Library, and binary files generated with
348 old localedef may be incompatible with this version of the GNU C Library,
349 in the following circumstances:
351 + Locale files may be incompatible on m68k systems.
353 + Locale archive files (but not separate files for individual locales) may
354 be incompatible on systems where plain "char" is signed.
356 * The configure option --disable-versioning has been removed. Builds with
357 --disable-versioning had not worked for several years.
359 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
360 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
362 * SystemTap probes for malloc have been introduced.
364 * SystemTap probes for slow multiple precision fallback paths of
365 transcendental functions have been introduced.
367 * Support for powerpc64le has been added.
369 * The soft-float powerpc port now supports e500 processors.
371 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
373 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
374 set of header declarations that are enabled by default, even when other
375 feature test macros or compiler options such as -std=c99 would otherwise
376 disable some of those declarations.
378 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
379 conflict with POSIX. The libbsd-compat library (which was a dummy library
380 that did nothing) has also been removed.
382 * Preliminary documentation about Multi-Thread, Async-Signal and
383 Async-Cancel Safety has been added.
385 * Change of ABI data structures for s390 and s390x:
386 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
387 allow for future hardware extensions. All library functions that accept or
388 return these structures were versioned in order to provide backwards
389 compatibility with existing code. However, not all cases can be handled
390 with interface versioning. If an application embeds either structure into
391 another structure and that structure is passed to another compilation unit
392 which expects the newer larger-sized object then any access to the new
393 fields will result in undefined behaviour. Similarly any access to fields
394 that were moved by the enlarging of the structures will cause undefined
395 behaviour. To fix the undefined behaviour all objects that are part of the
396 final in-memory image must agree on the size of structures, and this may
397 require recompilation.
401 * The following bugs are resolved with this release:
403 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
404 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
405 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
406 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
407 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
408 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
409 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
410 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
411 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
412 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
413 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
414 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
415 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
418 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
419 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
420 Distributions can re-enable building and using pt_chown via the new configure
421 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
422 considerable security risks and should only be used if the distribution
423 understands and accepts the risks.
425 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
428 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
429 fixed (Bugzilla #15330).
431 * Add support for calling C++11 thread_local object destructors on thread
432 and program exit. This needs compiler support for offloading C++11
433 destructor calls to glibc.
435 * Improved worst case performance of libm functions with double inputs and
438 * Support for priority inherited mutexes in pthread condition variables on
439 non-x86 architectures.
441 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
443 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
445 * Optimized string functions for ARM. Implemented by Will Newton and
448 * Optimized libm functions for SPARC. Implemented by David S. Miller.
450 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
453 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
454 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
456 * Added a benchmark framework to track performance of functions in glibc.
458 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
459 It is based on draft TS 18661 and currently enabled as a GNU extension.
461 * On Linux, the clock function now uses the clock_gettime system call
462 for improved precision, rather than old times system call.
464 * Added support for version-3 tz format files. This is needed when using
465 the tz database release 2013e or later, and affects a few unusual cases --
466 currently only TZ='America/Godthab' for time stamps after 2037.
468 * Added new API functions pthread_getattr_default_np and
469 pthread_setattr_default_np to get and set the default pthread
470 attributes of a process.
472 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
473 This may improve lock scaling of existing programs on TSX capable systems.
474 When the --enable-lock-elision=yes parameter is specified at configure
475 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
478 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
479 availability). Implemented by Ryan S. Arnold.
481 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
485 * The following bugs are resolved with this release:
487 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
488 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
489 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
490 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
491 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
492 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
493 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
494 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
495 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
496 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
497 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
498 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
499 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
500 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
501 14879, 14889, 14893, 14898, 14914.
503 * Optimization of memcpy for MIPS.
505 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
506 EMFILE has been fixed (Bugzilla #14889).
508 * The add-on ports collection is now distributed in the "ports" subdirectory
509 of the main GNU C Library distribution, rather than separately.
511 * Port to ARM AArch64 contributed by Linaro.
513 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
514 Optimized versions of memcpy, memset, and memcmp added for System z10 and
516 Implemented by Andreas Krebbel.
518 * The new function secure_getenv allows secure access to the environment,
519 returning NULL if running in a SUID/SGID process. This function replaces
520 the internal function __secure_getenv.
522 * SystemTap static probes have been added into the dynamic linker.
523 Implemented by Gary Benson.
525 * Optimizations of string functions strstr, strcasestr and memmem.
526 Implemented by Maxim Kuvyrkov.
528 * The minimum Linux kernel version that this version of the GNU C Library
529 can be used with is 2.6.16.
531 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
532 powerpc POWER7. Implemented by Will Schmidt.
534 * New configure option --disable-nscd builds the C library such that it
535 never attempts to contact the Name Service Caching Daemon (nscd).
536 New configure option --disable-build-nscd avoids building nscd itself;
537 this is the default if --disable-nscd is used.
539 * Improved support for cross-compilation, including cross-testing and
540 bootstrap builds without a previously built glibc.
542 * Several testsuite tests are now able to test multiple IFUNC variants of an
543 interface, rather than just testing the one that would be chooen by
546 * New configure options --with-bugurl and --with-pkgversion, for
547 distributors to use to embed their bug-reporting and package version
548 information in --help and --version output.
550 * The ttyname and ttyname_r functions on Linux now fall back to searching for
551 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
552 allows creation of chroots without the procfs mounted on /proc.
554 * The `crypt' function now fails if passed salt bytes that violate the
555 specification for those values. On Linux, the `crypt' function will
556 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
557 enabled, and fail on encrypted strings using the MD5 or DES algorithm
558 when the mode is enabled.
560 * The `clock_*' suite of functions (declared in <time.h>) is now available
561 directly in the main C library. Previously it was necessary to link with
562 -lrt to use these functions. This change has the effect that a
563 single-threaded program that uses a function such as `clock_gettime' (and
564 is not linked with -lrt) will no longer implicitly load the pthreads
565 library at runtime and so will not suffer the overheads associated with
566 multi-thread support in other code such as the C++ runtime library.
568 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
573 * The following bugs are resolved with this release:
575 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
576 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
577 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
578 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
579 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
580 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
581 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
582 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
583 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
584 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
585 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
586 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
587 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
588 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
589 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
590 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
591 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
592 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
593 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
594 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
595 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
596 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
599 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
600 configuring glibc with:
601 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
602 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
603 Implemented by H.J. Lu.
607 + define static_assert
609 + do not declare gets
611 + declare at_quick_exit and quick_exit also for ISO C11
613 + aligned_alloc. NB: The code is deliberately allows the size parameter
614 to not be a multiple of the alignment. This is a moronic requirement
615 in the standard but it is only a requirement on the caller, not the
620 + uchar.h support added
622 + CMPLX, CMPLXF, CMPLXL added
624 Implemented by Ulrich Drepper.
626 * Support for the IA-64 has been moved to ports.
628 * Remove support for anything but ELF binary format
630 * Checking versions of poll, ppoll added.
631 Implemented by Ulrich Drepper.
633 * More generic and 64-bit performance optimizations to math functions.
634 Implemented by Ulrich Drepper.
636 * New configure option --enable-obsolete-rpc makes the deprecated RPC
637 headers and functions available at compile time as they were before
638 version 2.14. This option will be removed at some time in the future
639 after the TI-RPC library becomes fully sufficient for the needs of
640 existing applications.
642 * Compatibility code for Linux kernel versions before 2.4 has been removed.
643 Note that glibc is not expected to work with any Linux kernel version
646 * New header <sys/auxv.h> and function getauxval allowing easy access to
647 the AT_* key-value pairs passed from the Linux kernel. The header also
648 defines the HWCAP_* bits associated with the AT_HWCAP key.
650 * New locales: mag_IN
652 * New configure option --enable-systemtap builds SystemTap static probes
653 into libc for setjmp and longjmp and into libpthread for various operations.
654 So far the setjmp/longjmp probes and some of the libpthread probes are
655 provided only for i*86 and x86_64.
656 Implemented by Roland McGrath and Rayson Ho.
658 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
660 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
663 * More optimized functions for SPARC. Implemented by David S. Miller.
665 * Improved support for cross-compilation, especially bootstrap builds
666 without a previously built glibc.
668 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
669 Chris Metcalf from Tilera.
671 * Support for the old ARM ABI has been removed from ports. Only the EABI is
672 now supported for ARM processors.
674 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
675 as the name of the dynamic linker, to distinguish it from the
676 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
678 * Support for CRIS has been removed from ports.
680 * A new class of installed header has been documented for low-level
681 platform-specific functionality. PowerPC added the first instance with a
682 function to provide time base register access. Contributed by Tulio
683 Magno Quites Machado Filho.
685 * ix86 configurations now install header files that are consistent with
686 what x86-64 configurations install. These same header files can be used
687 for -m32, -m64, or -mx32 builds.
688 Contributed by H.J. Lu.
690 * Math library bug fixes. A thorough audit of all open math library bugs was
691 conducted by Joseph Myers. Significant progress was made on many math
692 library bugs resulting in more accurate exceptions and function results.
693 Many thanks to all those that contributed including Andreas Jaeger for his
694 patch review and work on the x87 trigonometric instruction issues.
696 * Timezone data is no longer installed. Timezone-related binaries and scripts
697 will continue to be installed. Users should obtain their timezone data from
698 their distribution provider or from the tzdata package at
699 <ftp://munnari.oz.au/pub/>.
703 * The following bugs are resolved with this release:
705 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
706 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
707 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
708 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
709 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
710 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
711 13484, 13506, 13515, 13523, 13524, 13538, 13540
713 * New program pldd to list loaded object of a process
714 Implemented by Ulrich Drepper.
716 * Add nss_db support back to glibc. No more dependency on Berkeley db
717 and support for initgroups lookups.
718 Implemented by Ulrich Drepper.
720 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
721 Contributed by HJ Lu.
723 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
724 Contributed by HJ Lu.
726 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
727 on x86-32 and x86-64.
728 Contributed by Liubov Dmitrieva.
730 * Optimized strchr and strrchr for SSE on x86-32.
731 Contributed by Liubov Dmitrieva.
733 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
734 for x86-64 and x86-32.
735 Contributed by Liubov Dmitrieva.
737 * New interfaces: scandirat, scandirat64
738 Implemented by Ulrich Drepper.
740 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
741 Implemented by Ulrich Drepper.
743 * nscd now also caches the netgroup database.
744 Implemented by Ulrich Drepper.
746 * Integrate libm with gcc's -ffinite-math-only option.
747 Implemented by Ulrich Drepper.
749 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
750 to math functions. Implemented by Ulrich Drepper.
752 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
753 Implemented by Ulrich Drepper.
755 * New Linux interfaces: process_vm_readv, process_vm_writev
757 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
758 Implemented by Ulrich Drepper.
760 * Optimized nearbyint and strcasecmp for PPC.
761 Implemented by Adhemerval Zanella.
763 * New locales: bho_IN, unm_US, es_CU, ta_LK
767 * The following bugs are resolved with this release:
769 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
770 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
771 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
772 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
773 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
774 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
775 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
776 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
777 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
778 12795, 12811, 12813, 12814, 12841
780 * The RPC implementation in libc is obsoleted. Old programs keep working
781 but new programs cannot be linked with the routines in libc anymore.
782 Programs in need of RPC functionality must be linked against TI-RPC.
783 The TI-RPC implementation is IPv6 enabled and there are other benefits.
785 Visible changes of this change include (obviously) the inability to link
786 programs using RPC functions without referencing the TI-RPC library and the
787 removal of the RPC headers from the glibc headers.
788 Implemented by Ulrich Drepper.
790 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
791 syncfs, setns, sendmmsg
793 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
794 yue_HK, lij_IT, mhr_RU
796 * New encodings: CP770, CP771, CP772, CP773, CP774
798 * New program sotruss to trace calls through PLTs
799 Implemented by Ulrich Drepper.
801 * The malloc hook implementation is marked deprecated and will be removed
802 from the default implementation in the next version. The design never
803 worked ever since the introduction of threads. Even programs which do
804 not create threads themselves can use multiple threads created internally.
808 * The following bugs are resolved with this release:
810 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
811 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
812 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
813 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
816 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
818 * POWER7 optimizations: memset, memcmp, strncmp
820 * New optimized string functions for x86-64: strnlen (SSE2),
821 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
822 Implemented by Ulrich Drepper.
826 * The following bugs are resolved with this release:
828 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
829 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
830 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
831 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
832 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
833 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
834 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
835 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
837 * New interfaces: pthread_getname_np, pthread_setname_np
839 * New Linux interface: recvmmsg
841 * STT_GNU_IFUNC implemented for Sparc by David Miller.
843 * The dynamic linker now recognizes supported ABI versions from the
844 EI_ABIVERSION field in the ELF header.
845 Implemented by Ulrich Drepper.
847 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
848 will not be used to fill in password fields in the passwd.byname replies.
849 Instead it is used to synthesize the shadow.byname table, should it be
850 missing. This is a useful mode in some installations involving Solaris.
851 Implemented by Ulrich Drepper.
853 * New locales: kok_IN, sq_MK, cv_RU
857 * The following bugs are resolved with this release:
859 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
860 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
861 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
862 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
863 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
864 10789, 10817, 10823, 10840, 10847
866 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
868 Implemented by Ulrich Drepper.
870 * Checking version of longjmp added that fails if an uninitialized stack
871 frame would be created. Implemented by Ulrich Drepper.
873 * STT_GNU_IFUNC is now supported in static executables.
874 Implemented by H.J. Lu.
876 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
878 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
879 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
880 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
881 Contributed by H.J. Lu.
883 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
884 Implemented by Ulrich Drepper.
886 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
888 Contributed by H.J. Lu.
890 * Support for fma instruction in AVX on x86-64.
891 Implemented by H.J. Lu and Ulrich Drepper.
893 * AVX support in x86-64 auditing support in ld.so.
894 Implemented by H.J. Lu.
896 * STB_GNU_UNIQUE support added.
897 Implemented by Ulrich Drepper.
899 * Implement second fallback mode for optimized DNS lookup for even more
900 broken environments. If two requests from the same port are not
901 handled correctly close the socket and open a new one before sending
902 the second request. The 'single-request-reopen' option in /etc/resolv.conf
903 can be used to select this mode right away, instead of rediscovering the
904 necessity is every process again.
905 Implemented by Ulrich Drepper.
907 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
908 Implemented by Adam Tkac.
910 * Optimized iconv conversions for S390x.
911 Implemented by Andreas Krebbel.
913 * Using condvars with PI mutexes is now more efficient due to kernel
914 support for requeueing to PI futexes. NPTL support added for x86-64.
915 Implemented by Ulrich Drepper.
917 * New locales: ps_AF, my_MM
921 * The following bugs are resolved with this release:
923 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
924 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
925 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
926 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
927 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
929 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
930 Implemented by Ulrich Drepper.
932 * New Linux interfaces: accept4, fallocate, fallocate64.
933 Implemented by Ulrich Drepper.
935 * Correct declarations of string function when used in C++ code. This
936 could lead to compile errors for invalid C++ code.
938 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
941 * New POSIX 2008 interface: psiginfo
942 Implemented by Ulrich Drepper.
944 * New ISO C++1x interfaces: quick_exit, at_quick_exit
945 Implemented by Ulrich Drepper.
947 * Support for selecting between multiple function definitions at runtime
948 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
950 * The libcrypt library can now use the hash function implementations in
951 NSS. Implemented by Ulrich Drepper.
953 * The malloc implementation can be compiled to be less memory efficient
954 but higher performing in multi-threaded programs.
955 Implemented by Ulrich Drepper.
957 * New locales: nan_TW@latin, ks_IN
959 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
960 Implemented by Ulrich Drepper.
962 * Extended printf hook support. It is possible to use user-defined types
963 and extend existing format specifiers.
964 Implemented by Ulrich Drepper.
966 * Handling for group shadow files has been added.
967 Implemented by Ulrich Drepper.
969 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
970 servers (the case, e.g., for some people using the built-in DNS
971 server in ADSL modems/routers). There is a once-per-process timeout
972 in case of a broken server. To avoid it, users can run nscd or put
973 'options single-request' in /etc/resolv.conf.
974 Implemented by Ulrich Drepper.
978 * The following bugs are resolved with this release:
980 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
981 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
982 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
983 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
984 6968, 6974, 6980, 6995, 7008, 7009, 7029
986 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
987 up at the same time. Implemented by Ulrich Drepper.
989 * TLS descriptors for LD and GD on x86 and x86-64.
990 Implemented by Alexandre Oliva.
992 * getaddrinfo now handles DCCP and UDPlite.
993 Implemented by Ulrich Drepper.
995 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
996 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
997 Implemented by Ulrich Drepper.
999 * New implementation of memmem, strstr, and strcasestr which is O(n).
1000 Implemented by Eric Blake.
1002 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
1004 * Implement "e" option for popen to open file descriptor with the
1005 close-on-exec flag set. Implemented by Ulrich Drepper.
1007 * Implement "b" mode for fmemopen. In this mode writes writes don't
1008 implicitly add a NUL byte and seeks from the end of the buffer really
1009 use the buffer end, not the string length as the basis.
1010 Implemented by Ulrich Drepper.
1012 * Many functions, exported and internal, now atomically set the close-on-exec
1013 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
1015 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
1017 Implemented by Pravin Satpute.
1019 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
1023 * The following bugs are resolved with this release:
1025 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
1026 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
1027 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
1028 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
1029 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
1030 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
1031 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
1033 * New locales: bo_CN, bo_IN, shs_CA.
1035 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
1037 * Sorting rules for some Indian languages (Devanagari and Gujarati).
1038 Implemented by Pravin Satpute.
1040 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
1042 * nscd caches now all timeouts for DNS entries
1043 Implemented by Ulrich Drepper.
1045 * nscd is more efficient and wakes up less often.
1046 Implemented by Ulrich Drepper.
1048 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
1049 vdprintf, and obstack_vprintf.
1050 Implemented by Jakub Jelinek.
1052 * Faster memset for x86-64.
1053 Implemented by Harsha Jagasia and H.J. Lu.
1055 * Faster memcpy on x86.
1056 Implemented by Ulrich Drepper.
1058 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
1059 Implemented by Ulrich Drepper.
1061 * Faster sqrt and sqrtf implemention for some PPC variants.
1062 Implemented by Steven Munroe.
1066 * The following bugs are resolved with this release:
1068 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
1069 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
1070 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
1071 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
1072 5071, 5103, 5104, 5112, 5113, 5184, 5186
1074 * More checking functions: fread, fread_unlocked, open*, mq_open.
1075 Implemented by Jakub Jelinek and Ulrich Drepper.
1077 * Extend fortification to C++. Implemented by Jakub Jelinek.
1079 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
1080 by not recognizing 'a' as a modifier when those specs are requested.
1081 Implemented by Jakub Jelinek.
1083 * PPC optimizations to math and string functions.
1084 Implemented by Steven Munroe.
1086 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
1087 options to be passed. Implemented by Ulrich Drepper.
1089 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
1091 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
1092 Implemented by Ulrich Drepper.
1094 * Handle private futexes in the NPTL implementation.
1095 Implemented by Jakub Jelinek and Ulrich Drepper.
1097 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
1098 Implemented by Roland McGrath and Ulrich Drepper.
1100 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
1102 * SHA-256 and SHA-512 based password encryption.
1103 Implemented by Ulrich Drepper.
1105 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
1106 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
1109 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
1110 Implemented by Ulrich Drepper.
1114 * The following bugs are resolved with this release:
1116 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1117 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1118 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1119 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1120 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1121 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1122 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1125 * New Linux interfaces: epoll_pwait, sched_getcpu.
1127 * New generic interfaces: strerror_l.
1129 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1133 * The following bugs are resolved with this release:
1135 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1136 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1137 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1138 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1139 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1140 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1141 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1142 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1143 3225, 3251, 3252, 3253, 3273
1145 * For Linux, the sorting of addresses returned by getaddrinfo now also
1146 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1147 Implemented by Ulrich Drepper.
1149 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1150 Implemented by Ulrich Drepper.
1152 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1154 * New iconv module for MIK. Contributed by Alexander Shopov.
1156 * For sites with broken group and/or passwd database, the auto-propagate
1157 option of nscd can prevent creating ID lookup entries from the results
1158 of a name lookup and vice versa. This usually is no problem but some
1159 site might have problems with the default behavior.
1160 Implemented by Ulrich Drepper.
1162 * Iterating over entire database in NIS can be slow. With the
1163 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1164 to trade time for memory. The entire database will be read at once.
1165 Implemented by Ulrich Drepper.
1167 * The interfaces introduced in RFC 3542 have been implemented by
1170 * Support for the new ELF hash table format was added by Ulrich Drepper.
1172 * Support for priority inheritance mutexes added by Jakub Jelinek and
1175 * Support for priority protected mutexes added by Jakub Jelinek.
1177 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1178 or_IN, csb_PL, fy_NL, sr_ME.
1182 * More overflow detection functions.
1184 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1185 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1187 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1188 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1189 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1190 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1191 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1192 by Masahide Washizawa.
1194 * It is now possible to install audit libraries for the dynamic linker using
1195 LD_AUDIT. Implemented by Ulrich Drepper.
1197 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1198 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1199 For a libc and libpthread that works well on Linux 2.4 kernels, we
1200 recommend using the stable 2.3 branch.
1202 * The new function open_wmemstream acts like open_memstream,
1203 but uses a wchar_t wide character buffer.
1205 * The new function ppoll is an improved version of poll, similar to pselect.
1207 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1208 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1209 renameat, unlinkat, linkat, symlinkat, readlinkat.
1211 * New Linux kernel system calls: unshare,
1212 inotify_init, inotify_add_watch, inotify_rm_watch.
1214 * The euidaccess function is now also known by the alias eaccess,
1215 for compatibility with some other systems.
1217 * Timezone data updated to 2006b version.
1221 * The following bugs are resolved with this release:
1223 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1224 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1225 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1226 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1227 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1228 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1230 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1232 * As of this release, GCC 4 can be used to compile the C Library.
1234 * Timezone data updated to 2005m version.
1238 * The following bugs are resolved with this release:
1240 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1241 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1242 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1243 777, 787, 821, 822, 823, 825
1245 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1249 * Support for RFC 3678. Real implementations exist only for Linux so far.
1250 Implemented by Ulrich Drepper.
1252 * nscd can now cache entries persistently. Expiring entries are reloaded.
1253 For speedups the cache can be shared in memory with client processes.
1254 Implemented by Ulrich Drepper.
1256 * nscd can now perform SELinux checks.
1257 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1259 * getaddrinfo queries are now cached. Canonical name lookup is performed
1261 Implemented by Ulrich Drepper.
1263 * The nothrow function attribute is used when headers are used by gcc when
1264 compiling C code. This can avoid significant amounts of exception
1267 * The malloc functions perform more error checking and are stricter when
1268 it comes to reacting on errors. The default action is to terminate
1269 the process after showing an error message. Implemented by Ulrich Drepper.
1271 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1272 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1274 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1275 namespaces using the new function dlmopen(). This feature is of course,
1276 like most other dynamic loading functionality, not available in statically
1277 linked applications. Implemented by Ulrich Drepper.
1279 * Low-overhead boundary checking variants of string and some stdio functions
1280 were added. These are to be used in conjunction with a gcc patch by
1281 Jakub Jelinek which adds calls to these functions if possible.
1282 Implemented by Jakub Jelinek and Ulrich Drepper.
1284 * Old code for several operating systems and machine architectures that
1285 have not been in working condition in a long time have been removed from
1286 the main source tree maintained by the GNU C Library's maintainers.
1287 These files are now reside in the separate `ports' source module
1288 that is usable as an add-on when building the library.
1292 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1293 interrogate the dynamic linker, compatible with the Solaris interface.
1295 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1296 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1298 * getifaddrs now uses the netlink interface on Linux to get its information.
1299 Implemented by Thorsten Kukuk.
1301 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1302 Implemented by Ulrich Drepper.
1304 * support for non-executable stacks on x86 has been added. Changes mostly
1307 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1310 * getaddrinfo now performs destination address selection according to
1315 * Thread-safe interfaces for many functions that access locale data
1316 were added in version 2.3, but these features were omitted from NEWS.
1317 Many functions have variants with an `_l' suffix that take a `locale_t'
1318 object as a parameter rather than consulting the current locale.
1319 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1320 create and maintain `locale_t' objects. Additionally, the new function
1321 `uselocale' sets "the current locale" (as used by functions not so
1322 parameterized) set for an individual thread. These features were added
1323 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1325 * The functions getresuid, getresgid, setresuid, and setresgid, which
1326 have long been available on Linux, are now declared in <unistd.h>
1327 and are now also available on the Hurd.
1329 * ELF thread-local storage support (TLS) now works on x86-64.
1331 * The new dynamic string token $LIB is expanded in shared library names.
1332 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1334 * Aldy Hernandez contributed complete software floating point support for
1335 PowerPC machines with no FPU.
1337 * fexecve is implemented on Linux.
1339 * The `btowc' function should work at least twice as fast due to
1340 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1342 * With approriate thread add-ons cancelable functions are now implemented
1343 in libc.so as well. No need to call the function in libpthread. This
1344 change allowed to finally disable the incorrect and expensive handling
1345 of weak definition in ld.so.
1347 * Yet more PLT entries in libc.so have been removed. We finally arrived
1348 at the bare minimum. Startup times improved appropriately.
1350 * Support for the new Linux/x86 system call interface was added. The
1351 AT_SYSINFO auxiliary vector entry is recognized and handled.
1355 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1358 * iconv (the program and the interface) now accepts empty names (excluding
1359 options like //TRANSLIT) to mean "use charset of current locale".
1361 * localedef can now transliterate characters in strings which are not in
1362 the provided charmap. The information from the input locale is used.
1364 * Prelinking support was added for ELF targets. This requires additional
1365 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1367 * Read-only stdio streams now use mmap to speed up operation by eliminating
1368 copying and buffer underflows. To use add 'm' to the mode string of
1369 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1371 * The malloc functions were completely rewritten by Wolfram Gloger based
1372 on Doug Lea's malloc-2.7.0.c.
1374 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1375 implementation of regex.
1377 * Bruno Haible upgraded the iconv and locale implementation to support
1380 * Contents of the LC_* and LANG environment variables in the CEN style are
1381 not recognized anymore. It never was used. Change by Ulrich Drepper.
1383 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1384 thread-local storage (TLS) ABI on some platforms.
1385 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1387 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1388 EUC-JISX0213, and TSCII.
1390 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1391 BSD-compatible interface for getting all network interface addresses.
1392 Implementation for IPv4 by Roland McGrath.
1394 * Loading of locale data is faster due to the introduction of a locale
1395 archive. Implemented by Roland McGrath and Ulrich Drepper.
1397 * Startup times are significantly reduced by not using exported functions
1398 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1401 * Steven Munroe contributed a port to PowerPC64/Linux.
1405 * The Hurd now uses the GNU libio implementation of stdio rather than the
1406 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1408 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1409 with the same behavior as the Linux system call of the same name.
1413 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1414 128-bit long double format.
1416 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1417 IBM1161, and IBM1162 charsets.
1419 * Andreas Jaeger contributed a port to x86-64/Linux.
1421 * Peter Bruin contributed a port to PowerPC/Hurd.
1423 * libc functions using I/O streams now can handle wide-oriented streams
1426 * optimizations in the dynamic linker. Binaries created by recent binutils
1427 versions start up quicker due to reduced time spent on relocations.
1429 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1433 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1434 asinh, atanh, j0 for the 128-bit long double format.
1436 * Bruno Haible updated all the code handling Unicode in some form to
1437 support Unicode 3.1.
1439 * Speed of regex for single-byte locales is back to previous levels.
1440 Patch by Isamu Hasegawa.
1442 * Alpha, SPARC, and IA-64 now also using floating stacks.
1444 * Startup time of internationalized applications greatly improved through
1445 iconv cache. Use iconvconfig to generate the cache file.
1446 Contributed by Ulrich Drepper.
1448 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1449 severe performance problems. Patch by David Mosberger.
1451 * The Hurd port got a lot more functionality like AIO, various stdio
1452 extensions, etc. Mainly done by Roland McGrath.
1454 * mtrace can now lookup symbols in shared libraries.
1458 * Intel's IA-64 math library is largely integrated. It provides fast and
1459 accurate implementatations for most basic and standard math functions
1460 in float, double, and long double format.
1462 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1463 and asin for the 96-bit long double format and asin, log, tan for the
1464 128-bit long double format.
1466 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1467 The basic double functions exist today. Contributed by Abraham Ziv
1468 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1469 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1471 * An asynchronous name lookup library was added. The interface is designed
1472 after POSIX AIO. The proposal was circulated beforehand to get comments.
1473 No negative ones came in. Implemented by Ulrich Drepper.
1475 * Port to S390/64bit contributed by Martin Schwidefsky
1476 <schwidefsky@de.ibm.com>.
1478 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1479 of functions for Linux/IA-64.
1481 * The RPC code is now thread safe. Threads can now use the same service
1482 of different services at the same time. Patch by Eric Norum
1483 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1485 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1486 family of functions for Linux/S390.
1488 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1489 of functions for Linux/x86.
1491 * Port to Linux/CRIS contributed by Axis Communications.
1495 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1496 we can now check for namespace violations and missing declarations. The
1497 result is that almost all headers are now Unix-compliant (as defined in
1498 the upcoming XPG6). The negative side is that some programs might need
1499 corrections, too, if they depend on the incorrect form of the headers in
1500 previous versions which defined too many symbols and included too many
1503 * regex now handles multibyte character sets correctly.
1504 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1506 * iconv (the program) does now conform to the upcoming XPG6 and handles
1507 charmaps. Instead of the charset names the path of charmaps can be
1508 provided and the conversion happens based on this data.
1509 Contributed by Ulrich Drepper.
1511 * The locale program now provides detailed information about the installed
1516 only lists the names of the supported locales
1520 provides details such as country, language, and codeset name.
1521 Contributed by Ulrich Drepper.
1525 * The gencat program now parses the input file according to the charset
1526 selected by the LC_CTYPE category. This is important for stateful
1527 character sets. To make generating catalogs easier there is a way
1528 to overwrite the charset selected by the locale: before the first
1529 message or $ quote line the catalog can contain a line like
1531 $ codeset=ISO-8859-2
1533 to select the charset (ISO-8859-2 in this case).
1535 Implemented by Shinya Hanataka and Ulrich Drepper.
1537 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1538 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1539 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1541 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1542 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1544 * The LANGUAGE environment variable is now ignored unless the locale is
1545 changed from the default "C" locale.
1547 * The usual bug fixes.
1551 * Greg McGary added runtime support for bounds checking using gcc's
1552 new -fbounded-pointers option. ix86 target is complete. PowerPC
1555 * Thorsten Kukuk added secure mode support to nscd.
1557 * The Berkeley db libraries have been removed.
1559 Related, the nss_db module is now in a separate package since it
1560 obviously requires a database library being available.
1562 * Wide character I/O streams implemented by Ulrich Drepper.
1564 * Functions from the extended socket API added by Ulrich Drepper.
1566 * Functions feenableexcept and fedisableexcept to control the
1567 behaviour of individual exceptions have been added by Andreas Jaeger.
1569 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1571 * The resolver code has been updated from bind 8.2.3-T5B which supports
1572 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1575 This change could in some situations effect backward compatibility. Since
1576 now `_res' is a thread-local instead of a global variable, modifying it
1577 in one thread does not have any effect in other threads.
1579 The resolver library was also extended to allow IPv6 as the transport
1580 protocol for the requests. This work was done by Stig Venaas.
1582 * Compatibility code for K&R C compilers has been removed from the
1583 header files. A ISO C compiler is needed to use the library
1584 (conforming to either C89 or C99 standard).
1586 * Complete rewrite of the localedef program to support multibyte character
1587 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1588 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1589 Implemented by Ulrich Drepper.
1591 Bruno Haible significantly improved the generation and use of the data
1592 structures for the wide character tables.
1594 * Plural handling in gettext implemented by Ulrich Drepper.
1596 * The utmp daemon has been removed.
1598 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1600 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1603 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1605 * POSIX barriers implemented by Kaz Kylheku.
1607 * POSIX spawn function family implemented by Ulrich Drepper.
1609 * POSIX spinlocks are now available.
1611 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1613 * the configure option --enable-kernel=X.Y.Z allows to strip out
1614 compatibility for kernel versions before X.Y.Z. This is currently only
1615 implemented for Linux.
1617 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1618 field sin6_scope_id. This means that all programs using IPv6 should be
1619 recompiled. Don't expect binary compatibility with previous glibc
1622 * various conversion modules for IBM character sets contributed by
1625 * IA-64 port by Jes Sorensen and HJ Lu.
1639 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1641 * New xdr functions are added; some rpc functions are now 64bit clean.
1643 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1645 * Fixed known incompatibilities with glibc 2.0.
1647 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1649 * Optimized a number of functions (especially the ELF dynamic loader).
1651 * Update timezone data files.
1653 * lots of charmaps corrections
1655 * some new locale definitions and charmaps
1660 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1661 conform to POSIX member type requirements. Symbol versions have been
1662 adjusted as needed within the library, and for direct use by applications,
1663 but there is potential for problems if third-party libraries use
1664 struct timeval as part of their interface. This does not present
1665 a problem for X and other "essential" system libraries.
1667 * An additional locale model to support C++ Standard Library locale
1668 model and probably more was implemented by Ulrich Drepper.
1670 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1673 * Miles Bader provided the `argp' function family to support hierachical
1674 command line argument parsing, layered on top of getopt.
1676 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1678 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1681 * scanf recognizes the %a and %A format for scanning floating point numbers.
1683 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1684 information and interfaces for the available integer types.
1686 * about 130 new math functions were added to implement the ISO C9x math
1689 * the new header <complex.h> contains definitions of the complex math
1690 functions from ISO C 9X.
1692 * the new header <tgmath.h> defines generic macros to use complex or
1693 real valued functions.
1695 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1697 * Andreas Jaeger provided a test suite for the math library.
1699 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1701 * Ulrich Drepper added character set conversion functions (iconv).
1703 * Optimized string functions have been added.
1705 * The localedata addon is now part of glibc.
1707 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1709 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1710 daemon for NSS (nscd).
1712 Missing a better place here are some numbers on improvements. Under
1713 Linux 2.1.125 un-tar-ing the kernel sources takes
1717 using local files 12.19s 6.88s 22.91s
1719 using NIS 13.92s 8.91s 26.34s
1721 using NIS & nscd 10.37s 7.34s 25.30s
1723 using NIS+ 27.57s 30.37s 640.46s
1725 using NIS+ & nscd 10.25s 7.83s 26.51s
1727 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1729 Keep in mind that non-namelookup related operations dominate above times.
1730 It was just a common complain that using NIS+ unpacking the kernel is
1733 [1] The old nscd implementation is not available anymore since it was
1734 distributed with glibc up to version 2.0.98 and thus is now replaced.
1736 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1738 * Mark Kettenis provided a Hesiod NSS module.
1740 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1741 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1743 * rcmd can now handle netgroups (Dick Streefland).
1745 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1748 * Support for the IPv6 protocol has been added to the socket API, as per the
1749 latest draft standards.
1751 * Support for Linux 2.2 has been added.
1753 * Interface changes relative to the latest 2.0.x release:
1754 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1755 addseverity NEW: Unix98
1756 alphasort64 NEW: LFS
1757 argp_err_exit_status NEW: argp, GNU ext
1758 argp_error NEW: argp, GNU ext
1759 argp_failure NEW: argp, GNU ext
1760 argp_help NEW: argp, GNU ext
1761 argp_parse NEW: argp, GNU ext
1762 argp_program_bug_address NEW: argp, GNU ext
1763 argp_program_version NEW: argp, GNU ext
1764 argp_program_version_hook NEW: argp, GNU ext
1765 argp_state_help NEW: argp, GNU ext
1766 argp_usage NEW: argp, GNU ext
1767 authdes_create NEW: Secure RPC
1768 authdes_getucred NEW: Secure RPC
1769 authdes_pk_create NEW: Secure RPC
1770 backtrace NEW: GNU ext.
1771 backtrace_symbols NEW: GNU ext.
1772 backtrace_symbols_fd NEW: GNU ext.
1774 cacosf NEW: ISO C 9x
1775 cacosh NEW: ISO C 9x
1776 cacoshf NEW: ISO C 9x
1777 cacoshl NEW: ISO C 9x
1778 cacosl NEW: ISO C 9x
1785 casinf NEW: ISO C 9x
1786 casinh NEW: ISO C 9x
1787 casinhf NEW: ISO C 9x
1788 casinhl NEW: ISO C 9x
1789 casinl NEW: ISO C 9x
1791 catanf NEW: ISO C 9x
1792 catanh NEW: ISO C 9x
1793 catanhf NEW: ISO C 9x
1794 catanhl NEW: ISO C 9x
1795 catanl NEW: ISO C 9x
1796 cbc_crypt NEW: Secure RPC
1800 ccoshf NEW: ISO C 9x
1801 ccoshl NEW: ISO C 9x
1807 cimagf NEW: ISO C 9x
1808 cimagl NEW: ISO C 9x
1809 clearerr_locked REMOVED
1810 clntunix_create NEW: sunrpc ext
1812 clog10 NEW: ISO C 9x
1813 clog10f NEW: ISO C 9x
1814 clog10l NEW: ISO C 9x
1824 cprojf NEW: ISO C 9x
1825 cprojl NEW: ISO C 9x
1827 crealf NEW: ISO C 9x
1828 creall NEW: ISO C 9x
1833 csinhf NEW: ISO C 9x
1834 csinhl NEW: ISO C 9x
1837 csqrtf NEW: ISO C 9x
1838 csqrtl NEW: ISO C 9x
1842 ctanhf NEW: ISO C 9x
1843 ctanhl NEW: ISO C 9x
1845 des_setparity NEW: Secure RPC
1846 ecb_crypt NEW: Secure RPC
1847 endutxent NEW: Unix98
1849 exp10f NEW: ISO C 9x
1850 exp10l NEW: ISO C 9x
1854 fattach NEW: STREAMS
1855 fdetach NEW: STREAMS
1859 feclearexcept NEW: ISO C 9x
1860 fegetenv NEW: ISO C 9x
1861 fegetexceptflag NEW: ISO C 9x
1862 fegetround NEW: ISO C 9x
1863 feholdexcept NEW: ISO C 9x
1865 feraiseexcept NEW: ISO C 9x
1866 ferror_locked REMOVED
1867 fesetenv NEW: ISO C 9x
1868 fesetexceptflag NEW: ISO C 9x
1869 fesetround NEW: ISO C 9x
1870 fetestexcept NEW: ISO C 9x
1871 feupdateenv NEW: ISO C 9x
1872 fflush_locked REMOVED
1876 fgets_unlocked NEW: GNU ext.
1877 fileno_locked REMOVED
1889 fputc_locked REMOVED
1890 fputs_unlocked NEW: GNU ext.
1891 fread_unlocked NEW: GNU ext.
1896 fstatvfs NEW: Unix98
1900 ftruncate64 NEW: LFS
1902 fwrite_unlocked NEW: GNU ext.
1903 gai_strerror NEW: IPv6
1907 getchar_locked REMOVED
1909 getdate_err NEW: Unix98
1910 getdate_r NEW: GNU ext.
1912 getnameinfo NEW: IPv6
1913 getnetname NEW: Secure RPC
1914 getpmsg NEW: STREAMS
1915 getpt NEW: Unix98 PTY
1916 getrlimit64 NEW: LFS
1917 getutxent NEW: Unix98
1918 getutxid NEW: Unix98
1919 getutxline NEW: Unix98
1920 glob64 NEW: GNU ext.
1921 globfree64 NEW: GNU ext.
1922 gnu_get_libc_release NEW: GNU ext.
1923 gnu_get_libc_version NEW: GNU ext.
1924 grantpt NEW: Unix98 PTY
1925 host2netname NEW: Secure RPC
1927 iconv_close NEW: iconv
1928 iconv_open NEW: iconv
1929 if_freenameindex NEW: IPv6
1930 if_indextoname NEW: IPv6
1931 if_nameindex NEW: IPv6
1932 if_nametoindex NEW: IPv6
1933 in6addr_any NEW: IPv6
1934 in6addr_loopback NEW: IPv6
1935 inet6_isipv4mapped NEW: IPv6
1936 isastream NEW: STREAMS
1937 iswblank NEW: GNU ext.
1938 key_decryptsession NEW: Secure RPC
1939 key_decryptsession_pk NEW: Secure RPC
1940 key_encryptsession NEW: Secure RPC
1941 key_encryptsession_pk NEW: Secure RPC
1942 key_gendes NEW: Secure RPC
1943 key_get_conv NEW: Secure RPC
1944 key_secretkey_is_set NEW: Secure RPC
1945 key_setnet NEW: Secure RPC
1946 key_setsecret NEW: Secure RPC
1947 llrint NEW: ISO C 9x
1948 llrintf NEW: ISO C 9x
1949 llrintl NEW: ISO C 9x
1950 llround NEW: ISO C 9x
1951 llroundf NEW: ISO C 9x
1952 llroundl NEW: ISO C 9x
1957 lrintf NEW: ISO C 9x
1958 lrintl NEW: ISO C 9x
1959 lround NEW: ISO C 9x
1960 lroundf NEW: ISO C 9x
1961 lroundl NEW: ISO C 9x
1963 makecontext NEW: Unix98
1964 mempcpy NEW: GNU ext.
1967 modify_ldt NEW: kernel
1971 nearbyint NEW: ISO C 9x
1972 nearbyintf NEW: ISO C 9x
1973 nearbyintl NEW: ISO C 9x
1974 netname2host NEW: Secure RPC
1975 netname2user NEW: Secure RPC
1976 nexttoward NEW: ISO C 9x
1977 nexttowardf NEW: ISO C 9x
1978 nexttowardl NEW: ISO C 9x
1982 passwd2des NEW: Secure RPC
1984 pow10f NEW: GNU ext.
1985 pow10l NEW: GNU ext.
1988 printf_size NEW: GNU ext.
1989 printf_size_info NEW: GNU ext.
1990 profil_counter REMOVED
1991 pthread_mutexattr_getkind_np REPLACED
1992 pthread_mutexattr_setkind_np REPLACED
1993 ptsname NEW: Unix98 PTY
1994 ptsname_r NEW: Unix98 PTY
1996 putchar_locked REMOVED
1997 putgrent NEW: GNU ext.
1999 putpmsg NEW: STREAMS
2000 pututxline NEW: Unix98
2004 readdir64_r NEW: LFS
2005 remquo NEW: ISO C 9x
2006 remquof NEW: ISO C 9x
2007 remquol NEW: ISO C 9x
2009 roundf NEW: ISO C 9x
2010 roundl NEW: ISO C 9x
2012 scalbln NEW: ISO C 9x
2013 scalblnf NEW: ISO C 9x
2014 scalblnl NEW: ISO C 9x
2016 sendfile NEW: kernel
2017 setcontext NEW: Unix98
2018 setrlimit64 NEW: LFS
2019 setutxent NEW: Unix98
2021 sigignore NEW: Unix98
2022 sigqueue NEW: POSIX.1b
2023 sigrelse NEW: Unix98
2024 sigset NEW: POSIX.1b
2025 sigtimedwait NEW: POSIX.1b
2026 sigwaitinfo NEW: POSIX.1b
2027 sincos NEW: GNU ext.
2028 sincosf NEW: GNU ext.
2029 sincosl NEW: GNU ext.
2033 strcasestr NEW: GNU ext.
2034 strtoimax NEW: ISO C 9x
2035 strtoumax NEW: ISO C 9x
2036 strverscmp NEW: GNU ext.
2037 svcauthdes_stats NEW: Secure RPC
2038 svcunix_create NEW: sunrpc etx
2039 svcunixfd_create NEW: sunrpc ext
2040 swapcontext NEW: Unix98
2041 tcgetsid NEW: Unix98 PTY
2042 tdestroy NEW: GNU ext.
2043 tgamma NEW: ISO C 9x
2044 tgammaf NEW: ISO C 9x
2045 tgammal NEW: ISO C 9x
2049 truncf NEW: ISO C 9x
2050 truncl NEW: ISO C 9x
2052 unlockpt NEW: Unix98 PTY
2053 updwtmpx NEW: Unix98
2054 user2netname NEW: Secure RPC
2055 utmpxname NEW: Unix98
2056 versionsort NEW: GNU ext.
2057 versionsort64 NEW: GNU ext.
2059 wcscasecmp NEW: GNU ext.
2060 wcsncasecmp NEW: GNU ext.
2061 wcsnlen NEW: GNU ext.
2062 wcstoimax NEW: ISO C 9x
2063 wcstoll NEW: ISO C 9x
2064 wcstoull NEW: ISO C 9x
2065 wcstoumax NEW: ISO C 9x
2067 wordexp NEW: POSIX.2
2068 wordfree NEW: POSIX.2
2069 write_profiling REMOVED
2070 xdecrypt NEW: Secure RPC
2071 xdr_authdes_cred NEW: Secure RPC
2072 xdr_authdes_verf NEW: Secure RPC
2073 xdr_cryptkeyarg NEW: Secure RPC
2074 xdr_cryptkeyarg2 NEW: Secure RPC
2075 xdr_cryptkeyres NEW: Secure RPC
2076 xdr_getcredres NEW: Secure RPC
2077 xdr_key_netstarg NEW: Secure RPC
2078 xdr_key_netstres NEW: Secure RPC
2079 xdr_keybuf NEW: Secure RPC
2080 xdr_keystatus NEW: Secure RPC
2081 xdr_netnamestr NEW: Secure RPC
2082 xdr_sizeof NEW: Secure RPC
2083 xdr_unixcred NEW: sunrpc ext
2084 xencrypt NEW: Secure RPC
2085 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2096 * inet_ntoa is thread-safe
2098 * updwtmp is moved from libutil to libc
2100 * rewrite of cbrt function
2102 * update of timezone data
2116 * add atoll function
2118 * fix complex problems in Berkeley DB code
2120 * fix math functions
2124 * fixed lots of header problems (especially Linux/GNU specific)
2126 * dynamic loader preserves all registers
2128 * Roland McGrath provided support for handling of auxiliary objects in
2129 the ELF dynamic loader.
2131 * support for parallel builds is improved
2135 * GNU extensions are no longer declared by default. To enable them you
2136 must define the macro `_GNU_SOURCE' in your program or compile with
2139 * The library has changed from using GNU ld symbol aliases to using weak
2140 symbols where available. The ELF object file format supports weak
2141 symbols; GNU ld also supports weak symbols in the a.out format. (There
2142 is also now support for other GNU ld extensions in ELF. Use the
2143 `--with-elf' option to configure to indicate you have ELF, and
2144 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2145 of many files which contained only symbol aliases, reducing the size of
2146 the source and the compiled library; many other files were renamed to
2147 less cryptic names previously occupied by the symbol alias files.
2148 There is a new header file <elf.h> for programs which operate on
2149 files in the ELF format.
2151 * Converted to Autoconf version 2, so `configure' has more options.
2152 Run `configure --help' to see the details.
2154 * The library can now be configured to build profiling, highly-optimized
2155 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2156 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2157 `configure' enable building these extra libraries. The shared library is
2158 built by default when using both ELF and GNU ld. When shared libraries
2159 are enabled, the new library `-ldl' is available for arbitrary run-time
2160 loading of shared objects; its interface is defined in <dlfcn.h>. The
2161 new header file <link.h> gives access to the internals of the run-time
2162 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2163 application of same name on other systems and it provides information
2164 about dynamically linked binaries.
2166 * The C library now provides the run-time support code for profiling
2167 executables compiled with `-pg'. Programs can control the profiling code
2168 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2169 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2170 the support for this file format was contributed by David Mosberger-Tang.
2172 * The math code has been replaced with a math library based on fdlibm from
2173 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2174 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2175 functions. The math functions now reside in a separate library, so
2176 programs using them will need to use `-lm' their linking commands.
2178 * John C. Bowman contributed optimized ix87 assembler inline functions.
2180 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2181 mechanism similar to that found in Solaris 2. This is now used for the
2182 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2183 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2184 file controls what services are used for each individual database. This
2185 works by loading shared libraries with names specified in `nsswitch.conf',
2186 so service modules can be changed or added at any time without even
2187 relinking any program. Currently there are the file, db, and NIS based
2188 NSS services available.
2190 * The new functions `strtoq' and `strtouq' parse integer values from
2191 strings, like `strtol' and `strtoul', but they return `long long int' and
2192 `unsigned long long int' values, respectively (64-bit quantities).
2194 * The new functions `strtof' and `strtold' parse floating-point values from
2195 strings, like `strtod', but they return `float' and `long double' values,
2196 respectively (on some machines `double' and `long double' are the same).
2198 * Ulrich Drepper has contributed new implementations of the floating-point
2199 printing and reading code used in the `printf' family of functions and
2200 `strtod', `strtof', and `strtold'. These new functions are perfectly
2201 accurate, and much faster than the old ones.
2203 * The implementation of the POSIX locale model was completely rewritten by
2204 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2205 to compile the POSIX locale definition.
2207 * The former dummy implementations of the strcoll and strxfrm function are
2208 now replaced by fully functional code contributed by Ulrich Drepper. The
2209 collation information comes from the POSIX locale definitions.
2211 * The new header <langinfo.h> defines an interface for accessing
2212 various locale-dependent data (using the locale chosen with `setlocale').
2214 * Ulrich Drepper has contributed a new suite of functions for operation on
2215 wide-character and multibyte-character strings, in <wchar.h>;
2216 and classification and case conversion of wide characters, in <wctype.h>.
2217 These new functions are conforming to the ISO C, Amendement 1 specification.
2219 * There is now a second implementation of the standard I/O library available.
2220 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2221 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2223 * You can now use positional parameter specifications in format strings
2224 for the `printf' and `scanf' families of functions. For example,
2225 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2226 ``Number 6, Mr Jones''. This is mainly useful when providing different
2227 format strings for different languages, whose grammars may dictate
2228 different orderings of the values being printed. To support this
2229 feature, the interface for `register_printf_handler' has changed; see
2230 the header file <printf.h> for details.
2232 * The `printf' and `scanf' families of functions now understand a new
2233 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2234 to group numbers as indicated by the locale; for `scanf' and friends, this
2235 says to accept as valid only a number with all the proper grouping
2236 separators in the right places. In the default "C" locale, numbers are
2237 not grouped; but locales for specific countries will define the usual
2238 conventions (i.e. separate thousands with `,' in the US locale).
2240 * The pgrp functions have been regularized, slightly incompatibly but much
2241 less confusingly. The core functions are now `getpgid' and `setpgid',
2242 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2243 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2244 provided for compatibility. There is no longer an incompatible `getpgrp'
2245 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2247 * The new header file <fts.h> and suite of functions simplify programs that
2248 operate on directory trees. This code comes from 4.4 BSD.
2250 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2251 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2252 NSS scheme used in glibc.
2254 * There is a new malloc debugging hook `__memalign_hook'.
2256 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2257 `unsigned int' in <sys/types.h>. These are for compatibility only and
2258 their use is discouraged.
2260 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2261 done differently, so that it works even without GNU ld.
2263 * New function `euidaccess' checks allowed access to a file like `access',
2264 but using the effective IDs instead of the real IDs.
2266 * The time zone data files have been updated for the latest and greatest
2267 local time conventions of the countries of the world.
2269 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2272 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2273 for formatting floating-point numbers. They are provided only for
2274 compatibility; new programs should use `sprintf' instead. There are
2275 also equivalent function for the `long double' floating-point type and
2276 all functions also exist in a reentrant form.
2278 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2279 functions for maintaining the login-record files (primarily of use to
2280 system programs such as `login'), and convenient functions for
2281 allocating and initializing a pseudo-terminal (pty) device.
2283 * Ulrich Drepper has contributed new support for System V style
2284 shared memory and IPC on systems that support it.
2286 * Ulrich Drepper has contributed several miscellaneous new functions found
2287 in System V: The `hsearch' family of functions provide an effective
2288 implementation of hash tables; `a64l' and `l64a' provide a very simple
2289 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2292 * Ulrich Drepper has contributed new reentrant counterparts for the
2293 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2295 * Ulrich Drepper has contributed new, highly-optimized versions of several
2296 string functions for the i486/Pentium family of processors.
2298 * Ulrich Drepper has updated the Linux-specific code, based largely
2299 on work done in Hongjiu Lu's version of GNU libc for Linux.
2300 The GNU library now supports Linux versions 2.0.10 and later,
2301 using the ELF object file format (i[3456]86-*-linux).
2303 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2305 * David Mosberger-Tang and Richard Henderson have ported the C library
2306 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2307 dynamic linking support for ELF/Alpha.
2309 * Richard Henderson contributed several Alpha optimized assembler function
2310 for arithmetic and string handling.
2312 * Ulrich Drepper has contributed a new set of message catalog functions to
2313 support multiple languages using the <libintl.h> interface, for use with
2314 his new package GNU gettext. Translation volunteers have contributed
2315 catalogs of the library's messages in Spanish, German, and Korean.
2317 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2318 program and the `catgets' function for reading the catalog files it
2319 creates. (The <libintl.h> interface is preferred; we include the
2320 <nl_types.h> interface using `catgets' only for source compatibility with
2321 programs already written to use it.)
2323 * New header file <values.h> gives SVID-compatible names for <limits.h>
2326 * Various new macros, declarations, and small header files for compatibility
2329 * New function `group_member' is a convenient way to check if a process has
2330 a given effective group ID.
2332 * When using GCC 2.7 and later, the socket functions are now declared in a
2333 special way so that passing an argument of type `struct sockaddr_in *',
2334 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2335 `struct sockaddr *' type, does not generate a type-clash warning.
2337 * New function `error' declared in header file <error.h> is a convenient
2338 function for printing error messages and optionally exiting; this is the
2339 canonical function used in GNU programs. The new functions `err', `warn',
2340 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2341 doing the same thing.
2343 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2344 POSIX.2 `glob' function to do ~ and {...} expansion.
2346 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2347 `clearenv' which is used in POSIX.9 is also available.
2349 * New function `getsid' returns session ID number on systems that support it.
2351 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2352 files <db.h> and <mpool.h> provide a rich set of functions for several
2353 types of simple databases stored in memory and in files, and <ndbm.h> is
2354 an old `ndbm'-compatible interface using the `db' functions. Link with
2355 `-ldb' to get these functions.
2357 * New macro `strdupa' copies a string like `strdup', but uses local stack
2358 space from `alloca' instead of dynamic heap space from `malloc'.
2360 * New function `strnlen' is like `strlen' but searches only a given maximum
2361 number of characters for the null terminator. `stpncpy', `strndup' and
2362 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2365 * New function `statfs' in header <sys/statfs.h>.
2367 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2368 provide convenient functions for operating on blocks of null-terminated
2371 * A new suite of functions in <utmp.h> handle all the details of reading
2372 and writing the utmp file.
2374 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2377 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2378 completely POSIX compliant and also implemented the extended functionality
2379 to handle alternate digit representation and alternate era date formats.
2381 * Ulrich Drepper provided an implementation of the `strptime' function
2382 defined in XPG4.2 which transforms a string into a `struct tm' value.
2384 * Paul Eggert provided the tzselect shell script as part of the timezone
2385 code. The shell script makes it easy to select the correct timezone
2388 * The implementation of the malloc family of functions is completely replaced
2389 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2390 The implementation uses the mmap function (if available) and it is
2391 optimized for the use in multi threaded programs.
2393 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2394 functions. This new functionality is usable by specifying a special
2395 salt string and it is compatible with implementation on *BSD systems.
2397 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2398 `getsubopt' to handle second level command line options, `bsd_signal'
2399 to access BSD style `signal' functionality, the obsolete `regexp' style
2402 * the `lchown' function is available on system which support this
2405 * The implementation of the shadow password handling function was contributed
2408 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2410 * POSIX.1g support was added. The <sys/select.h> header is available,
2411 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2412 implementation of `getaddrinfo'.
2416 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2418 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2419 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2421 * The new function `daemon' from 4.4 BSD is useful for server programs that
2422 want to put themselves in the background.
2424 * Joel Sherrill has contributed support for several standalone boards that
2425 run without an operating system.
2427 * `printf', `scanf' and friends now accept a `q' type modifier for long
2428 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2430 * All of the code taken from BSD (notably most of the math and networking
2431 routines) has been updated from the BSD 4.4-Lite release.
2433 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2435 * The new functions `getdomainname' and `setdomainname' fetch or change the
2436 YP/NIS domain name. These are system calls which exist on systems which
2439 * The time zone data files have been updated for the latest international
2442 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2443 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2447 * The C library now includes support for Sun RPC, from Sun's free
2448 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2449 are included. (There is still no support for YP.)
2451 * Tom Quinn has contributed a port of the C library to SGI machines running
2452 Irix 4 (mips-sgi-irix4).
2454 * The new `lockf' function is a simplified interface to the locking
2455 facilities of `fcntl', included for compatibility.
2457 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2459 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2461 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2464 * The error message printed by `assert' for a failed assertion now includes
2465 the name of the program (if using GNU ld) and the name of the calling
2466 function (with versions of GCC that support this).
2468 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2470 * The library now includes the <sys/mman.h> header file and memory
2471 management functions `mmap', `munmap', `mprotect', `msync', and
2472 `madvise', on systems that support those facilities.
2474 * The interface for `mcheck' has changed slightly: the function called to
2475 abort the program when an allocation inconsistency is detected now takes
2476 an argument that indicates the type of failure. The new function
2477 `mprobe' lets you request a consistency check for a particular block at
2478 any time (checks are normally done only when you call `free' or `realloc'
2481 * It is now possible to easily cross-compile the C library, building on one
2482 system a library to run on another machine and/or operating system. All
2483 you need to do is set the variable `HOST_CC' in `configparms' to the
2484 native compiler for programs to run on the machine you are building on (a
2485 few generator programs are used on Unix systems); set `CC' to the
2488 * The new function `fexecve' (only implemented on the GNU system) executes
2489 a program file given a file descriptor already open on the file.
2493 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2494 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2496 * You can set the variable `libprefix' in `configparms' to specify a prefix
2497 to be prepended to installed library files; this makes it easy to install
2498 the GNU C library to be linked as `-lgnuc' or whatever.
2500 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2501 copies a limited number of characters from a string, and returns the
2502 address of the last character written.
2504 * You no longer need to check for whether the installed `stddef.h' is
2505 compatible with the GNU C library. configure now checks for you.
2507 * You can now define a per-stream `fileno' function to convert the
2508 stream's cookie into an integral file descriptor.
2510 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2511 allocates zero bytes of storage, and returns a unique pointer which
2512 you can pass to `realloc' or `free'. The behavior is undefined if
2513 you dereference this pointer.
2515 * The C library now runs on Sony NEWS m68k machines running either
2516 NewsOS 3 or NewsOS 4.
2518 * The new `syscall' function is a system-dependent primitive function
2519 for invoking system calls. It has the canonical behavior on Unix
2520 systems, including unreliable return values for some calls (such as
2521 `pipe', `fork' and `getppid').
2523 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2524 to `EAGAIN', which is the preferred name. On systems whose kernels
2525 use two distinct codes, the C library now translates EWOULDBLOCK to
2526 EAGAIN in every system call function.
2530 * The GNU C Library Reference Manual is now distributed with the library.
2531 `make dvi' will produce a DVI file of the printed manual.
2532 `make info' will produce Info files that you can read on line using C-h i
2533 in Emacs or the `info' program.
2534 Please send comments on the manual to bug-glibc-manual@gnu.org.
2536 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2538 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2540 * Jason Merrill has contributed a port to the Sequent Symmetry running
2541 Dynix version 3 (i386-sequent-dynix).
2543 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2544 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2546 * New function `memory_warnings' lets you arrange to get warnings when
2547 malloc is running out of memory to allocate, like Emacs gives you.
2549 * The C library now contains the relocating allocator used in Emacs 19 for
2550 its editing buffers. This allocator (ralloc) minimizes allocation
2551 overhead and fragmentation by moving allocated regions around whenever it
2552 needs to. You always refer to a ralloc'd region with a "handle" (a
2553 pointer to a pointer--an object of type `void **').
2555 * There is a new `printf' format: `%m' gives you the string corresponding
2556 to the error code in `errno'.
2558 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2559 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2560 pass, the `a' modifier says to fill in a `char **' you pass with a
2563 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2564 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2565 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2567 * `mkstemp' is a traditional Unix function to atomically create and open a
2568 uniquely-named temporary file.
2572 * The standard location for the file that says what the local timezone is
2573 has changed again. It is now `/usr/local/etc/localtime' (or more
2574 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2576 * The distribution no longer contains any files with names longer than 14
2579 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2580 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2582 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2586 * The configuration process has changed quite a bit. The `configure'
2587 script is now used just like the configuration scripts for other GNU
2588 packages. The `sysdeps' directory hierarchy is much rearranged.
2589 The file `INSTALL' explains the new scheme in detail.
2591 * The header files no longer need to be processed into ANSI C and
2592 traditional C versions. There is just one set of files to install, and
2593 it will work with ANSI or old C compilers (including `gcc -traditional').
2595 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2596 MIPS DECStation running Ultrix 4.
2598 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2599 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2600 made itself into a shared library.
2602 * Yet further improved support for the i386, running 4.3 BSD-like systems
2603 (such as Mach 3 with the Unix single-server), or System V.
2605 * New function `strncasecmp' to do case-insensitive string comparison
2606 with limited length.
2608 * New function `strsep' is a reentrant alternative to `strtok'.
2610 * New functions `scandir' and `alphasort' for searching directories.
2612 * New function `setenv' is a better interface to `putenv'.
2614 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2615 function for traversing a directory tree.
2617 * The GNU obstack package is now also part of the C library.
2618 The new function `open_obstack_stream' creates a stdio stream that
2619 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2620 formatted output directly to an obstack.
2622 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2623 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2625 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2627 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2628 things to your strings.
2630 * There are some new test programs: test-fseek, testmb, and testrand.
2632 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2633 These ports are not finished, but are a good starting place for really
2634 supporting those systems.
2636 * `/etc/localtime' is now the standard location for the file that says what
2637 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2638 This follows the general principle that `/etc' is the place for all local
2639 configuration files.
2641 * The C library header files now use `extern "C"' when used by the C++
2642 compiler, so the C library should now work with C++ code.
2644 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2645 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2648 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2649 function which uses the `merge sort' algorithm, and is said to be
2650 significantly faster than the old GNU `qsort' function. Merge sort is
2651 now the standard `qsort' function. The new algorithm can require a lot
2652 of temporary storage; so, the old sorting function is called when the
2653 required storage is not available.
2655 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2656 provides the Unix `crypt' function, plus some other entry points.
2658 * The code and header files taken from 4.4 BSD have been updated with the
2659 latest files released from Berkeley.
2661 ----------------------------------------------------------------------
2662 Copyright information:
2664 Copyright (C) 1992-2015 Free Software Foundation, Inc.
2666 Permission is granted to anyone to make or distribute verbatim copies
2667 of this document as received, in any medium, provided that the
2668 copyright notice and this permission notice are preserved,
2669 thus giving the recipient permission to redistribute in turn.
2671 Permission is granted to distribute modified versions
2672 of this document, or of portions of it,
2673 under the above conditions, provided also that they
2674 carry prominent notices stating who last changed them.
2677 version-control: never