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 4719, 6792, 13064, 14094, 14841, 14906, 15319, 15467, 15790, 15969, 16339,
13 16351, 16512, 16560, 16783, 16850, 17090, 17195, 17269, 17523, 17542,
14 17569, 17588, 17596, 17620, 17621, 17628, 17631, 17692, 17711, 17715,
15 17776, 17779, 17792, 17836, 17912, 17916, 17930, 17932, 17944, 17949,
16 17964, 17965, 17967, 17969, 17978, 17987, 17991, 17996, 17998, 17999,
17 18007, 18019, 18020, 18029, 18030, 18032, 18036, 18038, 18039, 18042,
18 18043, 18046, 18047, 18068, 18080, 18093, 18100, 18104, 18110, 18111,
19 18125, 18128, 18138, 18185, 18196, 18197, 18206, 18210, 18211, 18247,
20 18287, 18319, 18333, 18346, 18397, 18409.
22 * Cache information can be queried via sysconf() function on s390 e.g. with
23 _SC_LEVEL1_ICACHE_SIZE as argument.
25 * A buffer overflow in gethostbyname_r and related functions performing DNS
26 requests has been fixed. If the NSS functions were called with a
27 misaligned buffer, the buffer length change due to pointer alignment was
28 not taken into account. This could result in application crashes or,
29 potentially arbitrary code execution, using crafted, but syntactically
30 valid DNS responses. (CVE-2015-1781)
32 * The time zone file parser has been made more robust against crafted time
33 zone files, avoiding heap buffer overflows related to the processing of
34 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
35 large time zone data files. Overly long time zone specifiers in the TZ
36 variable no longer result in stack overflows and crashes.
38 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
39 for LD and GD on x86 and x86-64, has been implemented. You will need
40 binutils-2.24 or later to enable this optimization.
42 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
43 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
44 Hat). These updates cause user visible changes, such as the fix for bug
47 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
48 and getXXbyYY NSS calls for the same database, causing a denial-of-service
49 condition in some applications.
53 * The following bugs are resolved with this release:
55 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
56 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
57 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
58 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
59 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
60 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
61 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
62 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
63 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
64 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
67 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
68 too little memory for the to-be-scanned arguments and overflow the
69 allocated buffer. The implementation now correctly computes the required
70 buffer size when using malloc, and switches to malloc from alloca as
73 * A new semaphore algorithm has been implemented in generic C code for all
74 machines. Previous custom assembly implementations of semaphore were
75 difficult to reason about or ensure that they were safe. The new version
76 of semaphore supports machines with 64-bit or 32-bit atomic operations.
77 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
78 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
80 * Port to Altera Nios II has been contributed by Mentor Graphics.
82 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
83 implementations for powerpc64/powerpc64le.
84 Implemented by Adhemerval Zanella (IBM).
86 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
87 and powerpc64le. This may improve lock scaling of existing programs on
88 HTM capable systems. The lock elision code is only enabled with
89 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
90 powerpc will issue a transaction abort on every syscall to avoid side
91 effects being visible outside transactions.
93 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
94 AArch64. Contributed by ARM Ltd.
96 * i386 memcpy functions optimized with SSE2 unaligned load/store.
98 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
99 under certain input conditions resulting in the execution of a shell for
100 command substitution when the application did not request it. The
101 implementation now checks WRDE_NOCMD immediately before executing the
102 shell and returns the error WRDE_CMDSUB as expected.
104 * CVE-2012-3406 printf-style functions could run into a stack overflow when
105 processing format strings with a large number of format specifiers.
107 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
108 infinite loop if the DNS response contained a PTR record of an unexpected
111 * The minimum GCC version that can be used to build this version of the GNU
112 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
113 still be used to compile programs using the GNU C Library.
115 * The GNU C Library is now built with -Werror by default. This can be
116 disabled by configuring with --disable-werror.
118 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
120 * The obsolete sigvec function has been removed. This was the original
121 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
122 programs have been using instead for about 25 years. Of course, ABI
123 compatibility for old binaries using sigvec remains intact.
125 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
126 with newer versions of bison.
128 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
129 The original MIPS o32 hard-float ABI requires an FPU where double-precision
130 registers overlay two consecutive single-precision registers. MIPS32R2
131 introduced a new FPU mode (FR=1) where double-precision registers extend the
132 corresponding single-precision registers which is incompatible with the
133 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
134 require the use of FR=1 making a transition necessary. New o32 ABI
135 extensions enable users to migrate over time from the original o32 ABI
136 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
137 tracks the ABI of any loaded object and verifies that new objects are
138 compatible. Mode transitions will also be requested as required and
139 unsupportable objects will be rejected. The ABI checks include both soft and
140 hard float ABIs for o32, n32 and n64.
142 GCC 5 with GNU binutils 2.25 onwards:
143 It is strongly recommended that all o32 system libraries are built using the
144 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
145 with the original and all new o32 ABI extensions. Configure a MIPS GCC
146 compiler using --with-fp-32=xx to set this by default.
150 * The following bugs are resolved with this release:
152 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
153 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
154 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
155 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
156 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
157 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
158 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
159 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
160 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
161 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
162 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
163 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
164 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
165 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
166 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
168 * Reverted change of ABI data structures for s390 and s390x:
169 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
170 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
171 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
172 are preserved pointing straight to the same implementation as the old ones.
173 Given that, new callers will simply provide a too-big buffer to these
174 functions. Any applications/libraries out there that embed jmp_buf or
175 ucontext_t in an ABI-relevant data structure that have already been rebuilt
176 against 2.19 headers will have to rebuilt again. This is necessary in any
177 case to revert the breakage in their ABI caused by the glibc change.
179 * Support for file description locks is added to systems running the
180 Linux kernel. The standard file locking interfaces are extended to
181 operate on file descriptions, not file descriptors, via the use of
182 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
183 are associated with an open file instead of a process.
185 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
187 * The minimum Linux kernel version that this version of the GNU C Library
188 can be used with is 2.6.32.
190 * Running the testsuite no longer terminates as soon as a test fails.
191 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
192 with PASS or FAIL lines for individual tests. A summary of the results is
193 printed, including a list of failing lists, and "make check" exits with
194 error status if there were any unexpected failures. "make check
195 stop-on-test-failure=y" may be used to keep the old behavior.
197 * The am33 port, which had not worked for several years, has been removed
200 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
201 supported; they now act the same as _DEFAULT_SOURCE (but generate a
202 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
203 conflicted with POSIX (support for which was removed in 2.19), the
204 interfaces those macros enabled remain available when compiling with
205 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
208 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
210 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
211 This may improve lock scaling of existing programs on TX capable systems.
212 The lock elision code is only built with --enable-lock-elision=yes and
213 then requires a GCC version supporting the TX builtins. With lock elision
214 default mutexes are elided via __builtin_tbegin, if the cpu supports
215 transactions. By default lock elision is not enabled and the elision code
218 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
219 copy the path argument. This allowed programs to cause posix_spawn to
220 deference a dangling pointer, or use an unexpected pathname argument if
221 the string was modified after the posix_spawn_file_actions_addopen
224 * All supported architectures now use the main glibc sysdeps directory
225 instead of some being in a separate "ports" directory (which was
226 distributed separately before glibc 2.17).
228 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
229 On configurations that support it (all Linux configurations), it's now
230 used regardless of the --enable-add-ons switch to configure. It is no
231 longer possible to build such configurations without pthreads support.
233 * Locale names, including those obtained from environment variables (LANG
234 and the LC_* variables), are more tightly checked for proper syntax.
235 setlocale will now fail (with EINVAL) for locale names that are overly
236 long, contain slashes without starting with a slash, or contain ".." path
237 components. (CVE-2014-0475) Previously, some valid locale names were
238 silently replaced with the "C" locale when running in AT_SECURE mode
239 (e.g., in a SUID program). This is no longer necessary because of the
242 * On x86-64, the dynamic linker's lazy-binding support is now compatible
243 with application code using Intel MPX instructions. (With all previous
244 versions, the MPX register state could be clobbered when making calls
245 into or out of a shared library.) Note that while the new dynamic
246 linker is compatible with all known x86 hardware whether or not it
247 supports Intel MPX, some x86 instruction-set emulators might fail to
248 handle the new instruction encodings. This is known to affect Valgrind
249 versions up through 3.9 (but will be fixed in the forthcoming 3.10
250 release), and might affect other tools that do instruction emulation.
252 * Support for loadable gconv transliteration modules has been removed.
253 The support for transliteration modules has been non-functional for
254 over a decade, and the removal is prompted by security defects. The
255 normal gconv conversion modules are still supported. Transliteration
256 with //TRANSLIT is still possible, and the //IGNORE specifier
257 continues to be supported. (CVE-2014-5119)
259 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
260 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
261 resulting a denial-of-service security vulnerability in applications which
262 use functions related to iconv. (CVE-2014-6040)
266 * The following bugs are resolved with this release:
268 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
269 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
270 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
271 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
272 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
273 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
274 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
275 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
276 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
277 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
278 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
279 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
280 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
281 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
282 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
283 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
284 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
285 16431, 16453, 16474, 16506, 16510, 16529
287 * Slovenian translations for glibc messages have been contributed by the
288 Translation Project's Slovenian team of translators.
290 * The public headers no longer use __unused nor __block. This change is to
291 support compiling programs that are derived from BSD sources and use
292 __unused internally, and to support compiling with Clang's -fblock
293 extension which uses __block.
295 * CVE-2012-4412 The strcoll implementation caches indices and rules for
296 large collation sequences to optimize multiple passes. This cache
297 computation may overflow for large collation sequences and may cause a
298 stack or buffer overflow. This is now fixed to use a slower algorithm
299 which does not use a cache if there is an integer overflow.
301 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
302 rules for large collation sequences to optimize multiple passes and falls
303 back to alloca if malloc fails, resulting in a possible stack overflow.
304 The implementation now falls back to an uncached collation sequence lookup
307 * CVE-2013-4788 The pointer guard used for pointer mangling was not
308 initialized for static applications resulting in the security feature
309 being disabled. The pointer guard is now correctly initialized to a
310 random value for static applications. Existing static applications need
311 to be recompiled to take advantage of the fix (bug 15754).
313 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
314 to the d_name member of struct dirent, or omit the terminating NUL
315 character. (Bugzilla #14699).
317 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
318 aligned_alloc functions could allocate too few bytes or corrupt the
319 heap when passed very large allocation size values (Bugzilla #15855,
322 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
323 for AF_INET6 has been fixed (Bugzilla #16072).
325 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
326 pap_CW, quz_PE, the_NP.
328 * Substantially revised locales: gd_GB, ht_HT
330 * The LC_ADDRESS field was updated to support country_car for almost all
333 * ISO 1427 definitions were updated.
335 * ISO 3166 definitions were updated.
337 * The localedef utility now supports --big-endian and --little-endian
338 command-line options to generate locales for a different system from that
339 for which the C library was built.
341 * Binary locale files now only depend on the endianness of the system for
342 which they are generated and not on other properties of that system. As a
343 consequence, binary files generated with new localedef may be incompatible
344 with old versions of the GNU C Library, and binary files generated with
345 old localedef may be incompatible with this version of the GNU C Library,
346 in the following circumstances:
348 + Locale files may be incompatible on m68k systems.
350 + Locale archive files (but not separate files for individual locales) may
351 be incompatible on systems where plain "char" is signed.
353 * The configure option --disable-versioning has been removed. Builds with
354 --disable-versioning had not worked for several years.
356 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
357 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
359 * SystemTap probes for malloc have been introduced.
361 * SystemTap probes for slow multiple precision fallback paths of
362 transcendental functions have been introduced.
364 * Support for powerpc64le has been added.
366 * The soft-float powerpc port now supports e500 processors.
368 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
370 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
371 set of header declarations that are enabled by default, even when other
372 feature test macros or compiler options such as -std=c99 would otherwise
373 disable some of those declarations.
375 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
376 conflict with POSIX. The libbsd-compat library (which was a dummy library
377 that did nothing) has also been removed.
379 * Preliminary documentation about Multi-Thread, Async-Signal and
380 Async-Cancel Safety has been added.
382 * Change of ABI data structures for s390 and s390x:
383 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
384 allow for future hardware extensions. All library functions that accept or
385 return these structures were versioned in order to provide backwards
386 compatibility with existing code. However, not all cases can be handled
387 with interface versioning. If an application embeds either structure into
388 another structure and that structure is passed to another compilation unit
389 which expects the newer larger-sized object then any access to the new
390 fields will result in undefined behaviour. Similarly any access to fields
391 that were moved by the enlarging of the structures will cause undefined
392 behaviour. To fix the undefined behaviour all objects that are part of the
393 final in-memory image must agree on the size of structures, and this may
394 require recompilation.
398 * The following bugs are resolved with this release:
400 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
401 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
402 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
403 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
404 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
405 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
406 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
407 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
408 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
409 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
410 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
411 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
412 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
415 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
416 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
417 Distributions can re-enable building and using pt_chown via the new configure
418 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
419 considerable security risks and should only be used if the distribution
420 understands and accepts the risks.
422 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
425 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
426 fixed (Bugzilla #15330).
428 * Add support for calling C++11 thread_local object destructors on thread
429 and program exit. This needs compiler support for offloading C++11
430 destructor calls to glibc.
432 * Improved worst case performance of libm functions with double inputs and
435 * Support for priority inherited mutexes in pthread condition variables on
436 non-x86 architectures.
438 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
440 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
442 * Optimized string functions for ARM. Implemented by Will Newton and
445 * Optimized libm functions for SPARC. Implemented by David S. Miller.
447 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
450 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
451 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
453 * Added a benchmark framework to track performance of functions in glibc.
455 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
456 It is based on draft TS 18661 and currently enabled as a GNU extension.
458 * On Linux, the clock function now uses the clock_gettime system call
459 for improved precision, rather than old times system call.
461 * Added support for version-3 tz format files. This is needed when using
462 the tz database release 2013e or later, and affects a few unusual cases --
463 currently only TZ='America/Godthab' for time stamps after 2037.
465 * Added new API functions pthread_getattr_default_np and
466 pthread_setattr_default_np to get and set the default pthread
467 attributes of a process.
469 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
470 This may improve lock scaling of existing programs on TSX capable systems.
471 When the --enable-lock-elision=yes parameter is specified at configure
472 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
475 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
476 availability). Implemented by Ryan S. Arnold.
478 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
482 * The following bugs are resolved with this release:
484 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
485 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
486 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
487 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
488 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
489 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
490 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
491 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
492 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
493 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
494 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
495 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
496 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
497 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
498 14879, 14889, 14893, 14898, 14914.
500 * Optimization of memcpy for MIPS.
502 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
503 EMFILE has been fixed (Bugzilla #14889).
505 * The add-on ports collection is now distributed in the "ports" subdirectory
506 of the main GNU C Library distribution, rather than separately.
508 * Port to ARM AArch64 contributed by Linaro.
510 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
511 Optimized versions of memcpy, memset, and memcmp added for System z10 and
513 Implemented by Andreas Krebbel.
515 * The new function secure_getenv allows secure access to the environment,
516 returning NULL if running in a SUID/SGID process. This function replaces
517 the internal function __secure_getenv.
519 * SystemTap static probes have been added into the dynamic linker.
520 Implemented by Gary Benson.
522 * Optimizations of string functions strstr, strcasestr and memmem.
523 Implemented by Maxim Kuvyrkov.
525 * The minimum Linux kernel version that this version of the GNU C Library
526 can be used with is 2.6.16.
528 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
529 powerpc POWER7. Implemented by Will Schmidt.
531 * New configure option --disable-nscd builds the C library such that it
532 never attempts to contact the Name Service Caching Daemon (nscd).
533 New configure option --disable-build-nscd avoids building nscd itself;
534 this is the default if --disable-nscd is used.
536 * Improved support for cross-compilation, including cross-testing and
537 bootstrap builds without a previously built glibc.
539 * Several testsuite tests are now able to test multiple IFUNC variants of an
540 interface, rather than just testing the one that would be chooen by
543 * New configure options --with-bugurl and --with-pkgversion, for
544 distributors to use to embed their bug-reporting and package version
545 information in --help and --version output.
547 * The ttyname and ttyname_r functions on Linux now fall back to searching for
548 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
549 allows creation of chroots without the procfs mounted on /proc.
551 * The `crypt' function now fails if passed salt bytes that violate the
552 specification for those values. On Linux, the `crypt' function will
553 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
554 enabled, and fail on encrypted strings using the MD5 or DES algorithm
555 when the mode is enabled.
557 * The `clock_*' suite of functions (declared in <time.h>) is now available
558 directly in the main C library. Previously it was necessary to link with
559 -lrt to use these functions. This change has the effect that a
560 single-threaded program that uses a function such as `clock_gettime' (and
561 is not linked with -lrt) will no longer implicitly load the pthreads
562 library at runtime and so will not suffer the overheads associated with
563 multi-thread support in other code such as the C++ runtime library.
565 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
570 * The following bugs are resolved with this release:
572 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
573 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
574 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
575 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
576 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
577 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
578 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
579 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
580 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
581 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
582 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
583 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
584 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
585 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
586 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
587 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
588 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
589 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
590 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
591 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
592 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
593 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
596 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
597 configuring glibc with:
598 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
599 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
600 Implemented by H.J. Lu.
604 + define static_assert
606 + do not declare gets
608 + declare at_quick_exit and quick_exit also for ISO C11
610 + aligned_alloc. NB: The code is deliberately allows the size parameter
611 to not be a multiple of the alignment. This is a moronic requirement
612 in the standard but it is only a requirement on the caller, not the
617 + uchar.h support added
619 + CMPLX, CMPLXF, CMPLXL added
621 Implemented by Ulrich Drepper.
623 * Support for the IA-64 has been moved to ports.
625 * Remove support for anything but ELF binary format
627 * Checking versions of poll, ppoll added.
628 Implemented by Ulrich Drepper.
630 * More generic and 64-bit performance optimizations to math functions.
631 Implemented by Ulrich Drepper.
633 * New configure option --enable-obsolete-rpc makes the deprecated RPC
634 headers and functions available at compile time as they were before
635 version 2.14. This option will be removed at some time in the future
636 after the TI-RPC library becomes fully sufficient for the needs of
637 existing applications.
639 * Compatibility code for Linux kernel versions before 2.4 has been removed.
640 Note that glibc is not expected to work with any Linux kernel version
643 * New header <sys/auxv.h> and function getauxval allowing easy access to
644 the AT_* key-value pairs passed from the Linux kernel. The header also
645 defines the HWCAP_* bits associated with the AT_HWCAP key.
647 * New locales: mag_IN
649 * New configure option --enable-systemtap builds SystemTap static probes
650 into libc for setjmp and longjmp and into libpthread for various operations.
651 So far the setjmp/longjmp probes and some of the libpthread probes are
652 provided only for i*86 and x86_64.
653 Implemented by Roland McGrath and Rayson Ho.
655 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
657 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
660 * More optimized functions for SPARC. Implemented by David S. Miller.
662 * Improved support for cross-compilation, especially bootstrap builds
663 without a previously built glibc.
665 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
666 Chris Metcalf from Tilera.
668 * Support for the old ARM ABI has been removed from ports. Only the EABI is
669 now supported for ARM processors.
671 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
672 as the name of the dynamic linker, to distinguish it from the
673 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
675 * Support for CRIS has been removed from ports.
677 * A new class of installed header has been documented for low-level
678 platform-specific functionality. PowerPC added the first instance with a
679 function to provide time base register access. Contributed by Tulio
680 Magno Quites Machado Filho.
682 * ix86 configurations now install header files that are consistent with
683 what x86-64 configurations install. These same header files can be used
684 for -m32, -m64, or -mx32 builds.
685 Contributed by H.J. Lu.
687 * Math library bug fixes. A thorough audit of all open math library bugs was
688 conducted by Joseph Myers. Significant progress was made on many math
689 library bugs resulting in more accurate exceptions and function results.
690 Many thanks to all those that contributed including Andreas Jaeger for his
691 patch review and work on the x87 trigonometric instruction issues.
693 * Timezone data is no longer installed. Timezone-related binaries and scripts
694 will continue to be installed. Users should obtain their timezone data from
695 their distribution provider or from the tzdata package at
696 <ftp://munnari.oz.au/pub/>.
700 * The following bugs are resolved with this release:
702 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
703 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
704 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
705 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
706 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
707 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
708 13484, 13506, 13515, 13523, 13524, 13538, 13540
710 * New program pldd to list loaded object of a process
711 Implemented by Ulrich Drepper.
713 * Add nss_db support back to glibc. No more dependency on Berkeley db
714 and support for initgroups lookups.
715 Implemented by Ulrich Drepper.
717 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
718 Contributed by HJ Lu.
720 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
721 Contributed by HJ Lu.
723 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
724 on x86-32 and x86-64.
725 Contributed by Liubov Dmitrieva.
727 * Optimized strchr and strrchr for SSE on x86-32.
728 Contributed by Liubov Dmitrieva.
730 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
731 for x86-64 and x86-32.
732 Contributed by Liubov Dmitrieva.
734 * New interfaces: scandirat, scandirat64
735 Implemented by Ulrich Drepper.
737 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
738 Implemented by Ulrich Drepper.
740 * nscd now also caches the netgroup database.
741 Implemented by Ulrich Drepper.
743 * Integrate libm with gcc's -ffinite-math-only option.
744 Implemented by Ulrich Drepper.
746 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
747 to math functions. Implemented by Ulrich Drepper.
749 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
750 Implemented by Ulrich Drepper.
752 * New Linux interfaces: process_vm_readv, process_vm_writev
754 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
755 Implemented by Ulrich Drepper.
757 * Optimized nearbyint and strcasecmp for PPC.
758 Implemented by Adhemerval Zanella.
760 * New locales: bho_IN, unm_US, es_CU, ta_LK
764 * The following bugs are resolved with this release:
766 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
767 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
768 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
769 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
770 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
771 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
772 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
773 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
774 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
775 12795, 12811, 12813, 12814, 12841
777 * The RPC implementation in libc is obsoleted. Old programs keep working
778 but new programs cannot be linked with the routines in libc anymore.
779 Programs in need of RPC functionality must be linked against TI-RPC.
780 The TI-RPC implementation is IPv6 enabled and there are other benefits.
782 Visible changes of this change include (obviously) the inability to link
783 programs using RPC functions without referencing the TI-RPC library and the
784 removal of the RPC headers from the glibc headers.
785 Implemented by Ulrich Drepper.
787 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
788 syncfs, setns, sendmmsg
790 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
791 yue_HK, lij_IT, mhr_RU
793 * New encodings: CP770, CP771, CP772, CP773, CP774
795 * New program sotruss to trace calls through PLTs
796 Implemented by Ulrich Drepper.
798 * The malloc hook implementation is marked deprecated and will be removed
799 from the default implementation in the next version. The design never
800 worked ever since the introduction of threads. Even programs which do
801 not create threads themselves can use multiple threads created internally.
805 * The following bugs are resolved with this release:
807 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
808 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
809 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
810 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
813 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
815 * POWER7 optimizations: memset, memcmp, strncmp
817 * New optimized string functions for x86-64: strnlen (SSE2),
818 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
819 Implemented by Ulrich Drepper.
823 * The following bugs are resolved with this release:
825 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
826 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
827 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
828 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
829 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
830 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
831 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
832 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
834 * New interfaces: pthread_getname_np, pthread_setname_np
836 * New Linux interface: recvmmsg
838 * STT_GNU_IFUNC implemented for Sparc by David Miller.
840 * The dynamic linker now recognizes supported ABI versions from the
841 EI_ABIVERSION field in the ELF header.
842 Implemented by Ulrich Drepper.
844 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
845 will not be used to fill in password fields in the passwd.byname replies.
846 Instead it is used to synthesize the shadow.byname table, should it be
847 missing. This is a useful mode in some installations involving Solaris.
848 Implemented by Ulrich Drepper.
850 * New locales: kok_IN, sq_MK, cv_RU
854 * The following bugs are resolved with this release:
856 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
857 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
858 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
859 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
860 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
861 10789, 10817, 10823, 10840, 10847
863 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
865 Implemented by Ulrich Drepper.
867 * Checking version of longjmp added that fails if an uninitialized stack
868 frame would be created. Implemented by Ulrich Drepper.
870 * STT_GNU_IFUNC is now supported in static executables.
871 Implemented by H.J. Lu.
873 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
875 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
876 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
877 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
878 Contributed by H.J. Lu.
880 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
881 Implemented by Ulrich Drepper.
883 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
885 Contributed by H.J. Lu.
887 * Support for fma instruction in AVX on x86-64.
888 Implemented by H.J. Lu and Ulrich Drepper.
890 * AVX support in x86-64 auditing support in ld.so.
891 Implemented by H.J. Lu.
893 * STB_GNU_UNIQUE support added.
894 Implemented by Ulrich Drepper.
896 * Implement second fallback mode for optimized DNS lookup for even more
897 broken environments. If two requests from the same port are not
898 handled correctly close the socket and open a new one before sending
899 the second request. The 'single-request-reopen' option in /etc/resolv.conf
900 can be used to select this mode right away, instead of rediscovering the
901 necessity is every process again.
902 Implemented by Ulrich Drepper.
904 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
905 Implemented by Adam Tkac.
907 * Optimized iconv conversions for S390x.
908 Implemented by Andreas Krebbel.
910 * Using condvars with PI mutexes is now more efficient due to kernel
911 support for requeueing to PI futexes. NPTL support added for x86-64.
912 Implemented by Ulrich Drepper.
914 * New locales: ps_AF, my_MM
918 * The following bugs are resolved with this release:
920 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
921 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
922 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
923 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
924 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
926 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
927 Implemented by Ulrich Drepper.
929 * New Linux interfaces: accept4, fallocate, fallocate64.
930 Implemented by Ulrich Drepper.
932 * Correct declarations of string function when used in C++ code. This
933 could lead to compile errors for invalid C++ code.
935 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
938 * New POSIX 2008 interface: psiginfo
939 Implemented by Ulrich Drepper.
941 * New ISO C++1x interfaces: quick_exit, at_quick_exit
942 Implemented by Ulrich Drepper.
944 * Support for selecting between multiple function definitions at runtime
945 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
947 * The libcrypt library can now use the hash function implementations in
948 NSS. Implemented by Ulrich Drepper.
950 * The malloc implementation can be compiled to be less memory efficient
951 but higher performing in multi-threaded programs.
952 Implemented by Ulrich Drepper.
954 * New locales: nan_TW@latin, ks_IN
956 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
957 Implemented by Ulrich Drepper.
959 * Extended printf hook support. It is possible to use user-defined types
960 and extend existing format specifiers.
961 Implemented by Ulrich Drepper.
963 * Handling for group shadow files has been added.
964 Implemented by Ulrich Drepper.
966 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
967 servers (the case, e.g., for some people using the built-in DNS
968 server in ADSL modems/routers). There is a once-per-process timeout
969 in case of a broken server. To avoid it, users can run nscd or put
970 'options single-request' in /etc/resolv.conf.
971 Implemented by Ulrich Drepper.
975 * The following bugs are resolved with this release:
977 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
978 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
979 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
980 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
981 6968, 6974, 6980, 6995, 7008, 7009, 7029
983 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
984 up at the same time. Implemented by Ulrich Drepper.
986 * TLS descriptors for LD and GD on x86 and x86-64.
987 Implemented by Alexandre Oliva.
989 * getaddrinfo now handles DCCP and UDPlite.
990 Implemented by Ulrich Drepper.
992 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
993 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
994 Implemented by Ulrich Drepper.
996 * New implementation of memmem, strstr, and strcasestr which is O(n).
997 Implemented by Eric Blake.
999 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
1001 * Implement "e" option for popen to open file descriptor with the
1002 close-on-exec flag set. Implemented by Ulrich Drepper.
1004 * Implement "b" mode for fmemopen. In this mode writes writes don't
1005 implicitly add a NUL byte and seeks from the end of the buffer really
1006 use the buffer end, not the string length as the basis.
1007 Implemented by Ulrich Drepper.
1009 * Many functions, exported and internal, now atomically set the close-on-exec
1010 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
1012 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
1014 Implemented by Pravin Satpute.
1016 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
1020 * The following bugs are resolved with this release:
1022 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
1023 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
1024 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
1025 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
1026 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
1027 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
1028 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
1030 * New locales: bo_CN, bo_IN, shs_CA.
1032 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
1034 * Sorting rules for some Indian languages (Devanagari and Gujarati).
1035 Implemented by Pravin Satpute.
1037 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
1039 * nscd caches now all timeouts for DNS entries
1040 Implemented by Ulrich Drepper.
1042 * nscd is more efficient and wakes up less often.
1043 Implemented by Ulrich Drepper.
1045 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
1046 vdprintf, and obstack_vprintf.
1047 Implemented by Jakub Jelinek.
1049 * Faster memset for x86-64.
1050 Implemented by Harsha Jagasia and H.J. Lu.
1052 * Faster memcpy on x86.
1053 Implemented by Ulrich Drepper.
1055 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
1056 Implemented by Ulrich Drepper.
1058 * Faster sqrt and sqrtf implemention for some PPC variants.
1059 Implemented by Steven Munroe.
1063 * The following bugs are resolved with this release:
1065 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
1066 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
1067 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
1068 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
1069 5071, 5103, 5104, 5112, 5113, 5184, 5186
1071 * More checking functions: fread, fread_unlocked, open*, mq_open.
1072 Implemented by Jakub Jelinek and Ulrich Drepper.
1074 * Extend fortification to C++. Implemented by Jakub Jelinek.
1076 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
1077 by not recognizing 'a' as a modifier when those specs are requested.
1078 Implemented by Jakub Jelinek.
1080 * PPC optimizations to math and string functions.
1081 Implemented by Steven Munroe.
1083 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
1084 options to be passed. Implemented by Ulrich Drepper.
1086 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
1088 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
1089 Implemented by Ulrich Drepper.
1091 * Handle private futexes in the NPTL implementation.
1092 Implemented by Jakub Jelinek and Ulrich Drepper.
1094 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
1095 Implemented by Roland McGrath and Ulrich Drepper.
1097 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
1099 * SHA-256 and SHA-512 based password encryption.
1100 Implemented by Ulrich Drepper.
1102 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
1103 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
1106 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
1107 Implemented by Ulrich Drepper.
1111 * The following bugs are resolved with this release:
1113 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1114 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1115 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1116 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1117 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1118 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1119 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1122 * New Linux interfaces: epoll_pwait, sched_getcpu.
1124 * New generic interfaces: strerror_l.
1126 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1130 * The following bugs are resolved with this release:
1132 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1133 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1134 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1135 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1136 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1137 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1138 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1139 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1140 3225, 3251, 3252, 3253, 3273
1142 * For Linux, the sorting of addresses returned by getaddrinfo now also
1143 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1144 Implemented by Ulrich Drepper.
1146 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1147 Implemented by Ulrich Drepper.
1149 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1151 * New iconv module for MIK. Contributed by Alexander Shopov.
1153 * For sites with broken group and/or passwd database, the auto-propagate
1154 option of nscd can prevent creating ID lookup entries from the results
1155 of a name lookup and vice versa. This usually is no problem but some
1156 site might have problems with the default behavior.
1157 Implemented by Ulrich Drepper.
1159 * Iterating over entire database in NIS can be slow. With the
1160 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1161 to trade time for memory. The entire database will be read at once.
1162 Implemented by Ulrich Drepper.
1164 * The interfaces introduced in RFC 3542 have been implemented by
1167 * Support for the new ELF hash table format was added by Ulrich Drepper.
1169 * Support for priority inheritance mutexes added by Jakub Jelinek and
1172 * Support for priority protected mutexes added by Jakub Jelinek.
1174 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1175 or_IN, csb_PL, fy_NL, sr_ME.
1179 * More overflow detection functions.
1181 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1182 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1184 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1185 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1186 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1187 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1188 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1189 by Masahide Washizawa.
1191 * It is now possible to install audit libraries for the dynamic linker using
1192 LD_AUDIT. Implemented by Ulrich Drepper.
1194 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1195 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1196 For a libc and libpthread that works well on Linux 2.4 kernels, we
1197 recommend using the stable 2.3 branch.
1199 * The new function open_wmemstream acts like open_memstream,
1200 but uses a wchar_t wide character buffer.
1202 * The new function ppoll is an improved version of poll, similar to pselect.
1204 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1205 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1206 renameat, unlinkat, linkat, symlinkat, readlinkat.
1208 * New Linux kernel system calls: unshare,
1209 inotify_init, inotify_add_watch, inotify_rm_watch.
1211 * The euidaccess function is now also known by the alias eaccess,
1212 for compatibility with some other systems.
1214 * Timezone data updated to 2006b version.
1218 * The following bugs are resolved with this release:
1220 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1221 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1222 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1223 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1224 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1225 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1227 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1229 * As of this release, GCC 4 can be used to compile the C Library.
1231 * Timezone data updated to 2005m version.
1235 * The following bugs are resolved with this release:
1237 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1238 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1239 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1240 777, 787, 821, 822, 823, 825
1242 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1246 * Support for RFC 3678. Real implementations exist only for Linux so far.
1247 Implemented by Ulrich Drepper.
1249 * nscd can now cache entries persistently. Expiring entries are reloaded.
1250 For speedups the cache can be shared in memory with client processes.
1251 Implemented by Ulrich Drepper.
1253 * nscd can now perform SELinux checks.
1254 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1256 * getaddrinfo queries are now cached. Canonical name lookup is performed
1258 Implemented by Ulrich Drepper.
1260 * The nothrow function attribute is used when headers are used by gcc when
1261 compiling C code. This can avoid significant amounts of exception
1264 * The malloc functions perform more error checking and are stricter when
1265 it comes to reacting on errors. The default action is to terminate
1266 the process after showing an error message. Implemented by Ulrich Drepper.
1268 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1269 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1271 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1272 namespaces using the new function dlmopen(). This feature is of course,
1273 like most other dynamic loading functionality, not available in statically
1274 linked applications. Implemented by Ulrich Drepper.
1276 * Low-overhead boundary checking variants of string and some stdio functions
1277 were added. These are to be used in conjunction with a gcc patch by
1278 Jakub Jelinek which adds calls to these functions if possible.
1279 Implemented by Jakub Jelinek and Ulrich Drepper.
1281 * Old code for several operating systems and machine architectures that
1282 have not been in working condition in a long time have been removed from
1283 the main source tree maintained by the GNU C Library's maintainers.
1284 These files are now reside in the separate `ports' source module
1285 that is usable as an add-on when building the library.
1289 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1290 interrogate the dynamic linker, compatible with the Solaris interface.
1292 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1293 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1295 * getifaddrs now uses the netlink interface on Linux to get its information.
1296 Implemented by Thorsten Kukuk.
1298 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1299 Implemented by Ulrich Drepper.
1301 * support for non-executable stacks on x86 has been added. Changes mostly
1304 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1307 * getaddrinfo now performs destination address selection according to
1312 * Thread-safe interfaces for many functions that access locale data
1313 were added in version 2.3, but these features were omitted from NEWS.
1314 Many functions have variants with an `_l' suffix that take a `locale_t'
1315 object as a parameter rather than consulting the current locale.
1316 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1317 create and maintain `locale_t' objects. Additionally, the new function
1318 `uselocale' sets "the current locale" (as used by functions not so
1319 parameterized) set for an individual thread. These features were added
1320 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1322 * The functions getresuid, getresgid, setresuid, and setresgid, which
1323 have long been available on Linux, are now declared in <unistd.h>
1324 and are now also available on the Hurd.
1326 * ELF thread-local storage support (TLS) now works on x86-64.
1328 * The new dynamic string token $LIB is expanded in shared library names.
1329 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1331 * Aldy Hernandez contributed complete software floating point support for
1332 PowerPC machines with no FPU.
1334 * fexecve is implemented on Linux.
1336 * The `btowc' function should work at least twice as fast due to
1337 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1339 * With approriate thread add-ons cancelable functions are now implemented
1340 in libc.so as well. No need to call the function in libpthread. This
1341 change allowed to finally disable the incorrect and expensive handling
1342 of weak definition in ld.so.
1344 * Yet more PLT entries in libc.so have been removed. We finally arrived
1345 at the bare minimum. Startup times improved appropriately.
1347 * Support for the new Linux/x86 system call interface was added. The
1348 AT_SYSINFO auxiliary vector entry is recognized and handled.
1352 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1355 * iconv (the program and the interface) now accepts empty names (excluding
1356 options like //TRANSLIT) to mean "use charset of current locale".
1358 * localedef can now transliterate characters in strings which are not in
1359 the provided charmap. The information from the input locale is used.
1361 * Prelinking support was added for ELF targets. This requires additional
1362 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1364 * Read-only stdio streams now use mmap to speed up operation by eliminating
1365 copying and buffer underflows. To use add 'm' to the mode string of
1366 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1368 * The malloc functions were completely rewritten by Wolfram Gloger based
1369 on Doug Lea's malloc-2.7.0.c.
1371 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1372 implementation of regex.
1374 * Bruno Haible upgraded the iconv and locale implementation to support
1377 * Contents of the LC_* and LANG environment variables in the CEN style are
1378 not recognized anymore. It never was used. Change by Ulrich Drepper.
1380 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1381 thread-local storage (TLS) ABI on some platforms.
1382 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1384 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1385 EUC-JISX0213, and TSCII.
1387 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1388 BSD-compatible interface for getting all network interface addresses.
1389 Implementation for IPv4 by Roland McGrath.
1391 * Loading of locale data is faster due to the introduction of a locale
1392 archive. Implemented by Roland McGrath and Ulrich Drepper.
1394 * Startup times are significantly reduced by not using exported functions
1395 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1398 * Steven Munroe contributed a port to PowerPC64/Linux.
1402 * The Hurd now uses the GNU libio implementation of stdio rather than the
1403 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1405 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1406 with the same behavior as the Linux system call of the same name.
1410 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1411 128-bit long double format.
1413 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1414 IBM1161, and IBM1162 charsets.
1416 * Andreas Jaeger contributed a port to x86-64/Linux.
1418 * Peter Bruin contributed a port to PowerPC/Hurd.
1420 * libc functions using I/O streams now can handle wide-oriented streams
1423 * optimizations in the dynamic linker. Binaries created by recent binutils
1424 versions start up quicker due to reduced time spent on relocations.
1426 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1430 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1431 asinh, atanh, j0 for the 128-bit long double format.
1433 * Bruno Haible updated all the code handling Unicode in some form to
1434 support Unicode 3.1.
1436 * Speed of regex for single-byte locales is back to previous levels.
1437 Patch by Isamu Hasegawa.
1439 * Alpha, SPARC, and IA-64 now also using floating stacks.
1441 * Startup time of internationalized applications greatly improved through
1442 iconv cache. Use iconvconfig to generate the cache file.
1443 Contributed by Ulrich Drepper.
1445 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1446 severe performance problems. Patch by David Mosberger.
1448 * The Hurd port got a lot more functionality like AIO, various stdio
1449 extensions, etc. Mainly done by Roland McGrath.
1451 * mtrace can now lookup symbols in shared libraries.
1455 * Intel's IA-64 math library is largely integrated. It provides fast and
1456 accurate implementatations for most basic and standard math functions
1457 in float, double, and long double format.
1459 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1460 and asin for the 96-bit long double format and asin, log, tan for the
1461 128-bit long double format.
1463 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1464 The basic double functions exist today. Contributed by Abraham Ziv
1465 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1466 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1468 * An asynchronous name lookup library was added. The interface is designed
1469 after POSIX AIO. The proposal was circulated beforehand to get comments.
1470 No negative ones came in. Implemented by Ulrich Drepper.
1472 * Port to S390/64bit contributed by Martin Schwidefsky
1473 <schwidefsky@de.ibm.com>.
1475 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1476 of functions for Linux/IA-64.
1478 * The RPC code is now thread safe. Threads can now use the same service
1479 of different services at the same time. Patch by Eric Norum
1480 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1482 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1483 family of functions for Linux/S390.
1485 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1486 of functions for Linux/x86.
1488 * Port to Linux/CRIS contributed by Axis Communications.
1492 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1493 we can now check for namespace violations and missing declarations. The
1494 result is that almost all headers are now Unix-compliant (as defined in
1495 the upcoming XPG6). The negative side is that some programs might need
1496 corrections, too, if they depend on the incorrect form of the headers in
1497 previous versions which defined too many symbols and included too many
1500 * regex now handles multibyte character sets correctly.
1501 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1503 * iconv (the program) does now conform to the upcoming XPG6 and handles
1504 charmaps. Instead of the charset names the path of charmaps can be
1505 provided and the conversion happens based on this data.
1506 Contributed by Ulrich Drepper.
1508 * The locale program now provides detailed information about the installed
1513 only lists the names of the supported locales
1517 provides details such as country, language, and codeset name.
1518 Contributed by Ulrich Drepper.
1522 * The gencat program now parses the input file according to the charset
1523 selected by the LC_CTYPE category. This is important for stateful
1524 character sets. To make generating catalogs easier there is a way
1525 to overwrite the charset selected by the locale: before the first
1526 message or $ quote line the catalog can contain a line like
1528 $ codeset=ISO-8859-2
1530 to select the charset (ISO-8859-2 in this case).
1532 Implemented by Shinya Hanataka and Ulrich Drepper.
1534 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1535 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1536 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1538 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1539 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1541 * The LANGUAGE environment variable is now ignored unless the locale is
1542 changed from the default "C" locale.
1544 * The usual bug fixes.
1548 * Greg McGary added runtime support for bounds checking using gcc's
1549 new -fbounded-pointers option. ix86 target is complete. PowerPC
1552 * Thorsten Kukuk added secure mode support to nscd.
1554 * The Berkeley db libraries have been removed.
1556 Related, the nss_db module is now in a separate package since it
1557 obviously requires a database library being available.
1559 * Wide character I/O streams implemented by Ulrich Drepper.
1561 * Functions from the extended socket API added by Ulrich Drepper.
1563 * Functions feenableexcept and fedisableexcept to control the
1564 behaviour of individual exceptions have been added by Andreas Jaeger.
1566 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1568 * The resolver code has been updated from bind 8.2.3-T5B which supports
1569 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1572 This change could in some situations effect backward compatibility. Since
1573 now `_res' is a thread-local instead of a global variable, modifying it
1574 in one thread does not have any effect in other threads.
1576 The resolver library was also extended to allow IPv6 as the transport
1577 protocol for the requests. This work was done by Stig Venaas.
1579 * Compatibility code for K&R C compilers has been removed from the
1580 header files. A ISO C compiler is needed to use the library
1581 (conforming to either C89 or C99 standard).
1583 * Complete rewrite of the localedef program to support multibyte character
1584 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1585 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1586 Implemented by Ulrich Drepper.
1588 Bruno Haible significantly improved the generation and use of the data
1589 structures for the wide character tables.
1591 * Plural handling in gettext implemented by Ulrich Drepper.
1593 * The utmp daemon has been removed.
1595 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1597 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1600 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1602 * POSIX barriers implemented by Kaz Kylheku.
1604 * POSIX spawn function family implemented by Ulrich Drepper.
1606 * POSIX spinlocks are now available.
1608 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1610 * the configure option --enable-kernel=X.Y.Z allows to strip out
1611 compatibility for kernel versions before X.Y.Z. This is currently only
1612 implemented for Linux.
1614 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1615 field sin6_scope_id. This means that all programs using IPv6 should be
1616 recompiled. Don't expect binary compatibility with previous glibc
1619 * various conversion modules for IBM character sets contributed by
1622 * IA-64 port by Jes Sorensen and HJ Lu.
1636 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1638 * New xdr functions are added; some rpc functions are now 64bit clean.
1640 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1642 * Fixed known incompatibilities with glibc 2.0.
1644 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1646 * Optimized a number of functions (especially the ELF dynamic loader).
1648 * Update timezone data files.
1650 * lots of charmaps corrections
1652 * some new locale definitions and charmaps
1657 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1658 conform to POSIX member type requirements. Symbol versions have been
1659 adjusted as needed within the library, and for direct use by applications,
1660 but there is potential for problems if third-party libraries use
1661 struct timeval as part of their interface. This does not present
1662 a problem for X and other "essential" system libraries.
1664 * An additional locale model to support C++ Standard Library locale
1665 model and probably more was implemented by Ulrich Drepper.
1667 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1670 * Miles Bader provided the `argp' function family to support hierachical
1671 command line argument parsing, layered on top of getopt.
1673 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1675 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1678 * scanf recognizes the %a and %A format for scanning floating point numbers.
1680 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1681 information and interfaces for the available integer types.
1683 * about 130 new math functions were added to implement the ISO C9x math
1686 * the new header <complex.h> contains definitions of the complex math
1687 functions from ISO C 9X.
1689 * the new header <tgmath.h> defines generic macros to use complex or
1690 real valued functions.
1692 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1694 * Andreas Jaeger provided a test suite for the math library.
1696 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1698 * Ulrich Drepper added character set conversion functions (iconv).
1700 * Optimized string functions have been added.
1702 * The localedata addon is now part of glibc.
1704 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1706 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1707 daemon for NSS (nscd).
1709 Missing a better place here are some numbers on improvements. Under
1710 Linux 2.1.125 un-tar-ing the kernel sources takes
1714 using local files 12.19s 6.88s 22.91s
1716 using NIS 13.92s 8.91s 26.34s
1718 using NIS & nscd 10.37s 7.34s 25.30s
1720 using NIS+ 27.57s 30.37s 640.46s
1722 using NIS+ & nscd 10.25s 7.83s 26.51s
1724 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1726 Keep in mind that non-namelookup related operations dominate above times.
1727 It was just a common complain that using NIS+ unpacking the kernel is
1730 [1] The old nscd implementation is not available anymore since it was
1731 distributed with glibc up to version 2.0.98 and thus is now replaced.
1733 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1735 * Mark Kettenis provided a Hesiod NSS module.
1737 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1738 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1740 * rcmd can now handle netgroups (Dick Streefland).
1742 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1745 * Support for the IPv6 protocol has been added to the socket API, as per the
1746 latest draft standards.
1748 * Support for Linux 2.2 has been added.
1750 * Interface changes relative to the latest 2.0.x release:
1751 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1752 addseverity NEW: Unix98
1753 alphasort64 NEW: LFS
1754 argp_err_exit_status NEW: argp, GNU ext
1755 argp_error NEW: argp, GNU ext
1756 argp_failure NEW: argp, GNU ext
1757 argp_help NEW: argp, GNU ext
1758 argp_parse NEW: argp, GNU ext
1759 argp_program_bug_address NEW: argp, GNU ext
1760 argp_program_version NEW: argp, GNU ext
1761 argp_program_version_hook NEW: argp, GNU ext
1762 argp_state_help NEW: argp, GNU ext
1763 argp_usage NEW: argp, GNU ext
1764 authdes_create NEW: Secure RPC
1765 authdes_getucred NEW: Secure RPC
1766 authdes_pk_create NEW: Secure RPC
1767 backtrace NEW: GNU ext.
1768 backtrace_symbols NEW: GNU ext.
1769 backtrace_symbols_fd NEW: GNU ext.
1771 cacosf NEW: ISO C 9x
1772 cacosh NEW: ISO C 9x
1773 cacoshf NEW: ISO C 9x
1774 cacoshl NEW: ISO C 9x
1775 cacosl NEW: ISO C 9x
1782 casinf NEW: ISO C 9x
1783 casinh NEW: ISO C 9x
1784 casinhf NEW: ISO C 9x
1785 casinhl NEW: ISO C 9x
1786 casinl NEW: ISO C 9x
1788 catanf NEW: ISO C 9x
1789 catanh NEW: ISO C 9x
1790 catanhf NEW: ISO C 9x
1791 catanhl NEW: ISO C 9x
1792 catanl NEW: ISO C 9x
1793 cbc_crypt NEW: Secure RPC
1797 ccoshf NEW: ISO C 9x
1798 ccoshl NEW: ISO C 9x
1804 cimagf NEW: ISO C 9x
1805 cimagl NEW: ISO C 9x
1806 clearerr_locked REMOVED
1807 clntunix_create NEW: sunrpc ext
1809 clog10 NEW: ISO C 9x
1810 clog10f NEW: ISO C 9x
1811 clog10l NEW: ISO C 9x
1821 cprojf NEW: ISO C 9x
1822 cprojl NEW: ISO C 9x
1824 crealf NEW: ISO C 9x
1825 creall NEW: ISO C 9x
1830 csinhf NEW: ISO C 9x
1831 csinhl NEW: ISO C 9x
1834 csqrtf NEW: ISO C 9x
1835 csqrtl NEW: ISO C 9x
1839 ctanhf NEW: ISO C 9x
1840 ctanhl NEW: ISO C 9x
1842 des_setparity NEW: Secure RPC
1843 ecb_crypt NEW: Secure RPC
1844 endutxent NEW: Unix98
1846 exp10f NEW: ISO C 9x
1847 exp10l NEW: ISO C 9x
1851 fattach NEW: STREAMS
1852 fdetach NEW: STREAMS
1856 feclearexcept NEW: ISO C 9x
1857 fegetenv NEW: ISO C 9x
1858 fegetexceptflag NEW: ISO C 9x
1859 fegetround NEW: ISO C 9x
1860 feholdexcept NEW: ISO C 9x
1862 feraiseexcept NEW: ISO C 9x
1863 ferror_locked REMOVED
1864 fesetenv NEW: ISO C 9x
1865 fesetexceptflag NEW: ISO C 9x
1866 fesetround NEW: ISO C 9x
1867 fetestexcept NEW: ISO C 9x
1868 feupdateenv NEW: ISO C 9x
1869 fflush_locked REMOVED
1873 fgets_unlocked NEW: GNU ext.
1874 fileno_locked REMOVED
1886 fputc_locked REMOVED
1887 fputs_unlocked NEW: GNU ext.
1888 fread_unlocked NEW: GNU ext.
1893 fstatvfs NEW: Unix98
1897 ftruncate64 NEW: LFS
1899 fwrite_unlocked NEW: GNU ext.
1900 gai_strerror NEW: IPv6
1904 getchar_locked REMOVED
1906 getdate_err NEW: Unix98
1907 getdate_r NEW: GNU ext.
1909 getnameinfo NEW: IPv6
1910 getnetname NEW: Secure RPC
1911 getpmsg NEW: STREAMS
1912 getpt NEW: Unix98 PTY
1913 getrlimit64 NEW: LFS
1914 getutxent NEW: Unix98
1915 getutxid NEW: Unix98
1916 getutxline NEW: Unix98
1917 glob64 NEW: GNU ext.
1918 globfree64 NEW: GNU ext.
1919 gnu_get_libc_release NEW: GNU ext.
1920 gnu_get_libc_version NEW: GNU ext.
1921 grantpt NEW: Unix98 PTY
1922 host2netname NEW: Secure RPC
1924 iconv_close NEW: iconv
1925 iconv_open NEW: iconv
1926 if_freenameindex NEW: IPv6
1927 if_indextoname NEW: IPv6
1928 if_nameindex NEW: IPv6
1929 if_nametoindex NEW: IPv6
1930 in6addr_any NEW: IPv6
1931 in6addr_loopback NEW: IPv6
1932 inet6_isipv4mapped NEW: IPv6
1933 isastream NEW: STREAMS
1934 iswblank NEW: GNU ext.
1935 key_decryptsession NEW: Secure RPC
1936 key_decryptsession_pk NEW: Secure RPC
1937 key_encryptsession NEW: Secure RPC
1938 key_encryptsession_pk NEW: Secure RPC
1939 key_gendes NEW: Secure RPC
1940 key_get_conv NEW: Secure RPC
1941 key_secretkey_is_set NEW: Secure RPC
1942 key_setnet NEW: Secure RPC
1943 key_setsecret NEW: Secure RPC
1944 llrint NEW: ISO C 9x
1945 llrintf NEW: ISO C 9x
1946 llrintl NEW: ISO C 9x
1947 llround NEW: ISO C 9x
1948 llroundf NEW: ISO C 9x
1949 llroundl NEW: ISO C 9x
1954 lrintf NEW: ISO C 9x
1955 lrintl NEW: ISO C 9x
1956 lround NEW: ISO C 9x
1957 lroundf NEW: ISO C 9x
1958 lroundl NEW: ISO C 9x
1960 makecontext NEW: Unix98
1961 mempcpy NEW: GNU ext.
1964 modify_ldt NEW: kernel
1968 nearbyint NEW: ISO C 9x
1969 nearbyintf NEW: ISO C 9x
1970 nearbyintl NEW: ISO C 9x
1971 netname2host NEW: Secure RPC
1972 netname2user NEW: Secure RPC
1973 nexttoward NEW: ISO C 9x
1974 nexttowardf NEW: ISO C 9x
1975 nexttowardl NEW: ISO C 9x
1979 passwd2des NEW: Secure RPC
1981 pow10f NEW: GNU ext.
1982 pow10l NEW: GNU ext.
1985 printf_size NEW: GNU ext.
1986 printf_size_info NEW: GNU ext.
1987 profil_counter REMOVED
1988 pthread_mutexattr_getkind_np REPLACED
1989 pthread_mutexattr_setkind_np REPLACED
1990 ptsname NEW: Unix98 PTY
1991 ptsname_r NEW: Unix98 PTY
1993 putchar_locked REMOVED
1994 putgrent NEW: GNU ext.
1996 putpmsg NEW: STREAMS
1997 pututxline NEW: Unix98
2001 readdir64_r NEW: LFS
2002 remquo NEW: ISO C 9x
2003 remquof NEW: ISO C 9x
2004 remquol NEW: ISO C 9x
2006 roundf NEW: ISO C 9x
2007 roundl NEW: ISO C 9x
2009 scalbln NEW: ISO C 9x
2010 scalblnf NEW: ISO C 9x
2011 scalblnl NEW: ISO C 9x
2013 sendfile NEW: kernel
2014 setcontext NEW: Unix98
2015 setrlimit64 NEW: LFS
2016 setutxent NEW: Unix98
2018 sigignore NEW: Unix98
2019 sigqueue NEW: POSIX.1b
2020 sigrelse NEW: Unix98
2021 sigset NEW: POSIX.1b
2022 sigtimedwait NEW: POSIX.1b
2023 sigwaitinfo NEW: POSIX.1b
2024 sincos NEW: GNU ext.
2025 sincosf NEW: GNU ext.
2026 sincosl NEW: GNU ext.
2030 strcasestr NEW: GNU ext.
2031 strtoimax NEW: ISO C 9x
2032 strtoumax NEW: ISO C 9x
2033 strverscmp NEW: GNU ext.
2034 svcauthdes_stats NEW: Secure RPC
2035 svcunix_create NEW: sunrpc etx
2036 svcunixfd_create NEW: sunrpc ext
2037 swapcontext NEW: Unix98
2038 tcgetsid NEW: Unix98 PTY
2039 tdestroy NEW: GNU ext.
2040 tgamma NEW: ISO C 9x
2041 tgammaf NEW: ISO C 9x
2042 tgammal NEW: ISO C 9x
2046 truncf NEW: ISO C 9x
2047 truncl NEW: ISO C 9x
2049 unlockpt NEW: Unix98 PTY
2050 updwtmpx NEW: Unix98
2051 user2netname NEW: Secure RPC
2052 utmpxname NEW: Unix98
2053 versionsort NEW: GNU ext.
2054 versionsort64 NEW: GNU ext.
2056 wcscasecmp NEW: GNU ext.
2057 wcsncasecmp NEW: GNU ext.
2058 wcsnlen NEW: GNU ext.
2059 wcstoimax NEW: ISO C 9x
2060 wcstoll NEW: ISO C 9x
2061 wcstoull NEW: ISO C 9x
2062 wcstoumax NEW: ISO C 9x
2064 wordexp NEW: POSIX.2
2065 wordfree NEW: POSIX.2
2066 write_profiling REMOVED
2067 xdecrypt NEW: Secure RPC
2068 xdr_authdes_cred NEW: Secure RPC
2069 xdr_authdes_verf NEW: Secure RPC
2070 xdr_cryptkeyarg NEW: Secure RPC
2071 xdr_cryptkeyarg2 NEW: Secure RPC
2072 xdr_cryptkeyres NEW: Secure RPC
2073 xdr_getcredres NEW: Secure RPC
2074 xdr_key_netstarg NEW: Secure RPC
2075 xdr_key_netstres NEW: Secure RPC
2076 xdr_keybuf NEW: Secure RPC
2077 xdr_keystatus NEW: Secure RPC
2078 xdr_netnamestr NEW: Secure RPC
2079 xdr_sizeof NEW: Secure RPC
2080 xdr_unixcred NEW: sunrpc ext
2081 xencrypt NEW: Secure RPC
2082 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2093 * inet_ntoa is thread-safe
2095 * updwtmp is moved from libutil to libc
2097 * rewrite of cbrt function
2099 * update of timezone data
2113 * add atoll function
2115 * fix complex problems in Berkeley DB code
2117 * fix math functions
2121 * fixed lots of header problems (especially Linux/GNU specific)
2123 * dynamic loader preserves all registers
2125 * Roland McGrath provided support for handling of auxiliary objects in
2126 the ELF dynamic loader.
2128 * support for parallel builds is improved
2132 * GNU extensions are no longer declared by default. To enable them you
2133 must define the macro `_GNU_SOURCE' in your program or compile with
2136 * The library has changed from using GNU ld symbol aliases to using weak
2137 symbols where available. The ELF object file format supports weak
2138 symbols; GNU ld also supports weak symbols in the a.out format. (There
2139 is also now support for other GNU ld extensions in ELF. Use the
2140 `--with-elf' option to configure to indicate you have ELF, and
2141 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2142 of many files which contained only symbol aliases, reducing the size of
2143 the source and the compiled library; many other files were renamed to
2144 less cryptic names previously occupied by the symbol alias files.
2145 There is a new header file <elf.h> for programs which operate on
2146 files in the ELF format.
2148 * Converted to Autoconf version 2, so `configure' has more options.
2149 Run `configure --help' to see the details.
2151 * The library can now be configured to build profiling, highly-optimized
2152 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2153 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2154 `configure' enable building these extra libraries. The shared library is
2155 built by default when using both ELF and GNU ld. When shared libraries
2156 are enabled, the new library `-ldl' is available for arbitrary run-time
2157 loading of shared objects; its interface is defined in <dlfcn.h>. The
2158 new header file <link.h> gives access to the internals of the run-time
2159 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2160 application of same name on other systems and it provides information
2161 about dynamically linked binaries.
2163 * The C library now provides the run-time support code for profiling
2164 executables compiled with `-pg'. Programs can control the profiling code
2165 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2166 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2167 the support for this file format was contributed by David Mosberger-Tang.
2169 * The math code has been replaced with a math library based on fdlibm from
2170 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2171 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2172 functions. The math functions now reside in a separate library, so
2173 programs using them will need to use `-lm' their linking commands.
2175 * John C. Bowman contributed optimized ix87 assembler inline functions.
2177 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2178 mechanism similar to that found in Solaris 2. This is now used for the
2179 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2180 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2181 file controls what services are used for each individual database. This
2182 works by loading shared libraries with names specified in `nsswitch.conf',
2183 so service modules can be changed or added at any time without even
2184 relinking any program. Currently there are the file, db, and NIS based
2185 NSS services available.
2187 * The new functions `strtoq' and `strtouq' parse integer values from
2188 strings, like `strtol' and `strtoul', but they return `long long int' and
2189 `unsigned long long int' values, respectively (64-bit quantities).
2191 * The new functions `strtof' and `strtold' parse floating-point values from
2192 strings, like `strtod', but they return `float' and `long double' values,
2193 respectively (on some machines `double' and `long double' are the same).
2195 * Ulrich Drepper has contributed new implementations of the floating-point
2196 printing and reading code used in the `printf' family of functions and
2197 `strtod', `strtof', and `strtold'. These new functions are perfectly
2198 accurate, and much faster than the old ones.
2200 * The implementation of the POSIX locale model was completely rewritten by
2201 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2202 to compile the POSIX locale definition.
2204 * The former dummy implementations of the strcoll and strxfrm function are
2205 now replaced by fully functional code contributed by Ulrich Drepper. The
2206 collation information comes from the POSIX locale definitions.
2208 * The new header <langinfo.h> defines an interface for accessing
2209 various locale-dependent data (using the locale chosen with `setlocale').
2211 * Ulrich Drepper has contributed a new suite of functions for operation on
2212 wide-character and multibyte-character strings, in <wchar.h>;
2213 and classification and case conversion of wide characters, in <wctype.h>.
2214 These new functions are conforming to the ISO C, Amendement 1 specification.
2216 * There is now a second implementation of the standard I/O library available.
2217 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2218 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2220 * You can now use positional parameter specifications in format strings
2221 for the `printf' and `scanf' families of functions. For example,
2222 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2223 ``Number 6, Mr Jones''. This is mainly useful when providing different
2224 format strings for different languages, whose grammars may dictate
2225 different orderings of the values being printed. To support this
2226 feature, the interface for `register_printf_handler' has changed; see
2227 the header file <printf.h> for details.
2229 * The `printf' and `scanf' families of functions now understand a new
2230 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2231 to group numbers as indicated by the locale; for `scanf' and friends, this
2232 says to accept as valid only a number with all the proper grouping
2233 separators in the right places. In the default "C" locale, numbers are
2234 not grouped; but locales for specific countries will define the usual
2235 conventions (i.e. separate thousands with `,' in the US locale).
2237 * The pgrp functions have been regularized, slightly incompatibly but much
2238 less confusingly. The core functions are now `getpgid' and `setpgid',
2239 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2240 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2241 provided for compatibility. There is no longer an incompatible `getpgrp'
2242 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2244 * The new header file <fts.h> and suite of functions simplify programs that
2245 operate on directory trees. This code comes from 4.4 BSD.
2247 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2248 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2249 NSS scheme used in glibc.
2251 * There is a new malloc debugging hook `__memalign_hook'.
2253 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2254 `unsigned int' in <sys/types.h>. These are for compatibility only and
2255 their use is discouraged.
2257 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2258 done differently, so that it works even without GNU ld.
2260 * New function `euidaccess' checks allowed access to a file like `access',
2261 but using the effective IDs instead of the real IDs.
2263 * The time zone data files have been updated for the latest and greatest
2264 local time conventions of the countries of the world.
2266 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2269 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2270 for formatting floating-point numbers. They are provided only for
2271 compatibility; new programs should use `sprintf' instead. There are
2272 also equivalent function for the `long double' floating-point type and
2273 all functions also exist in a reentrant form.
2275 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2276 functions for maintaining the login-record files (primarily of use to
2277 system programs such as `login'), and convenient functions for
2278 allocating and initializing a pseudo-terminal (pty) device.
2280 * Ulrich Drepper has contributed new support for System V style
2281 shared memory and IPC on systems that support it.
2283 * Ulrich Drepper has contributed several miscellaneous new functions found
2284 in System V: The `hsearch' family of functions provide an effective
2285 implementation of hash tables; `a64l' and `l64a' provide a very simple
2286 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2289 * Ulrich Drepper has contributed new reentrant counterparts for the
2290 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2292 * Ulrich Drepper has contributed new, highly-optimized versions of several
2293 string functions for the i486/Pentium family of processors.
2295 * Ulrich Drepper has updated the Linux-specific code, based largely
2296 on work done in Hongjiu Lu's version of GNU libc for Linux.
2297 The GNU library now supports Linux versions 2.0.10 and later,
2298 using the ELF object file format (i[3456]86-*-linux).
2300 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2302 * David Mosberger-Tang and Richard Henderson have ported the C library
2303 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2304 dynamic linking support for ELF/Alpha.
2306 * Richard Henderson contributed several Alpha optimized assembler function
2307 for arithmetic and string handling.
2309 * Ulrich Drepper has contributed a new set of message catalog functions to
2310 support multiple languages using the <libintl.h> interface, for use with
2311 his new package GNU gettext. Translation volunteers have contributed
2312 catalogs of the library's messages in Spanish, German, and Korean.
2314 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2315 program and the `catgets' function for reading the catalog files it
2316 creates. (The <libintl.h> interface is preferred; we include the
2317 <nl_types.h> interface using `catgets' only for source compatibility with
2318 programs already written to use it.)
2320 * New header file <values.h> gives SVID-compatible names for <limits.h>
2323 * Various new macros, declarations, and small header files for compatibility
2326 * New function `group_member' is a convenient way to check if a process has
2327 a given effective group ID.
2329 * When using GCC 2.7 and later, the socket functions are now declared in a
2330 special way so that passing an argument of type `struct sockaddr_in *',
2331 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2332 `struct sockaddr *' type, does not generate a type-clash warning.
2334 * New function `error' declared in header file <error.h> is a convenient
2335 function for printing error messages and optionally exiting; this is the
2336 canonical function used in GNU programs. The new functions `err', `warn',
2337 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2338 doing the same thing.
2340 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2341 POSIX.2 `glob' function to do ~ and {...} expansion.
2343 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2344 `clearenv' which is used in POSIX.9 is also available.
2346 * New function `getsid' returns session ID number on systems that support it.
2348 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2349 files <db.h> and <mpool.h> provide a rich set of functions for several
2350 types of simple databases stored in memory and in files, and <ndbm.h> is
2351 an old `ndbm'-compatible interface using the `db' functions. Link with
2352 `-ldb' to get these functions.
2354 * New macro `strdupa' copies a string like `strdup', but uses local stack
2355 space from `alloca' instead of dynamic heap space from `malloc'.
2357 * New function `strnlen' is like `strlen' but searches only a given maximum
2358 number of characters for the null terminator. `stpncpy', `strndup' and
2359 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2362 * New function `statfs' in header <sys/statfs.h>.
2364 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2365 provide convenient functions for operating on blocks of null-terminated
2368 * A new suite of functions in <utmp.h> handle all the details of reading
2369 and writing the utmp file.
2371 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2374 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2375 completely POSIX compliant and also implemented the extended functionality
2376 to handle alternate digit representation and alternate era date formats.
2378 * Ulrich Drepper provided an implementation of the `strptime' function
2379 defined in XPG4.2 which transforms a string into a `struct tm' value.
2381 * Paul Eggert provided the tzselect shell script as part of the timezone
2382 code. The shell script makes it easy to select the correct timezone
2385 * The implementation of the malloc family of functions is completely replaced
2386 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2387 The implementation uses the mmap function (if available) and it is
2388 optimized for the use in multi threaded programs.
2390 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2391 functions. This new functionality is usable by specifying a special
2392 salt string and it is compatible with implementation on *BSD systems.
2394 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2395 `getsubopt' to handle second level command line options, `bsd_signal'
2396 to access BSD style `signal' functionality, the obsolete `regexp' style
2399 * the `lchown' function is available on system which support this
2402 * The implementation of the shadow password handling function was contributed
2405 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2407 * POSIX.1g support was added. The <sys/select.h> header is available,
2408 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2409 implementation of `getaddrinfo'.
2413 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2415 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2416 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2418 * The new function `daemon' from 4.4 BSD is useful for server programs that
2419 want to put themselves in the background.
2421 * Joel Sherrill has contributed support for several standalone boards that
2422 run without an operating system.
2424 * `printf', `scanf' and friends now accept a `q' type modifier for long
2425 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2427 * All of the code taken from BSD (notably most of the math and networking
2428 routines) has been updated from the BSD 4.4-Lite release.
2430 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2432 * The new functions `getdomainname' and `setdomainname' fetch or change the
2433 YP/NIS domain name. These are system calls which exist on systems which
2436 * The time zone data files have been updated for the latest international
2439 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2440 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2444 * The C library now includes support for Sun RPC, from Sun's free
2445 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2446 are included. (There is still no support for YP.)
2448 * Tom Quinn has contributed a port of the C library to SGI machines running
2449 Irix 4 (mips-sgi-irix4).
2451 * The new `lockf' function is a simplified interface to the locking
2452 facilities of `fcntl', included for compatibility.
2454 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2456 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2458 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2461 * The error message printed by `assert' for a failed assertion now includes
2462 the name of the program (if using GNU ld) and the name of the calling
2463 function (with versions of GCC that support this).
2465 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2467 * The library now includes the <sys/mman.h> header file and memory
2468 management functions `mmap', `munmap', `mprotect', `msync', and
2469 `madvise', on systems that support those facilities.
2471 * The interface for `mcheck' has changed slightly: the function called to
2472 abort the program when an allocation inconsistency is detected now takes
2473 an argument that indicates the type of failure. The new function
2474 `mprobe' lets you request a consistency check for a particular block at
2475 any time (checks are normally done only when you call `free' or `realloc'
2478 * It is now possible to easily cross-compile the C library, building on one
2479 system a library to run on another machine and/or operating system. All
2480 you need to do is set the variable `HOST_CC' in `configparms' to the
2481 native compiler for programs to run on the machine you are building on (a
2482 few generator programs are used on Unix systems); set `CC' to the
2485 * The new function `fexecve' (only implemented on the GNU system) executes
2486 a program file given a file descriptor already open on the file.
2490 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2491 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2493 * You can set the variable `libprefix' in `configparms' to specify a prefix
2494 to be prepended to installed library files; this makes it easy to install
2495 the GNU C library to be linked as `-lgnuc' or whatever.
2497 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2498 copies a limited number of characters from a string, and returns the
2499 address of the last character written.
2501 * You no longer need to check for whether the installed `stddef.h' is
2502 compatible with the GNU C library. configure now checks for you.
2504 * You can now define a per-stream `fileno' function to convert the
2505 stream's cookie into an integral file descriptor.
2507 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2508 allocates zero bytes of storage, and returns a unique pointer which
2509 you can pass to `realloc' or `free'. The behavior is undefined if
2510 you dereference this pointer.
2512 * The C library now runs on Sony NEWS m68k machines running either
2513 NewsOS 3 or NewsOS 4.
2515 * The new `syscall' function is a system-dependent primitive function
2516 for invoking system calls. It has the canonical behavior on Unix
2517 systems, including unreliable return values for some calls (such as
2518 `pipe', `fork' and `getppid').
2520 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2521 to `EAGAIN', which is the preferred name. On systems whose kernels
2522 use two distinct codes, the C library now translates EWOULDBLOCK to
2523 EAGAIN in every system call function.
2527 * The GNU C Library Reference Manual is now distributed with the library.
2528 `make dvi' will produce a DVI file of the printed manual.
2529 `make info' will produce Info files that you can read on line using C-h i
2530 in Emacs or the `info' program.
2531 Please send comments on the manual to bug-glibc-manual@gnu.org.
2533 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2535 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2537 * Jason Merrill has contributed a port to the Sequent Symmetry running
2538 Dynix version 3 (i386-sequent-dynix).
2540 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2541 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2543 * New function `memory_warnings' lets you arrange to get warnings when
2544 malloc is running out of memory to allocate, like Emacs gives you.
2546 * The C library now contains the relocating allocator used in Emacs 19 for
2547 its editing buffers. This allocator (ralloc) minimizes allocation
2548 overhead and fragmentation by moving allocated regions around whenever it
2549 needs to. You always refer to a ralloc'd region with a "handle" (a
2550 pointer to a pointer--an object of type `void **').
2552 * There is a new `printf' format: `%m' gives you the string corresponding
2553 to the error code in `errno'.
2555 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2556 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2557 pass, the `a' modifier says to fill in a `char **' you pass with a
2560 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2561 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2562 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2564 * `mkstemp' is a traditional Unix function to atomically create and open a
2565 uniquely-named temporary file.
2569 * The standard location for the file that says what the local timezone is
2570 has changed again. It is now `/usr/local/etc/localtime' (or more
2571 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2573 * The distribution no longer contains any files with names longer than 14
2576 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2577 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2579 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2583 * The configuration process has changed quite a bit. The `configure'
2584 script is now used just like the configuration scripts for other GNU
2585 packages. The `sysdeps' directory hierarchy is much rearranged.
2586 The file `INSTALL' explains the new scheme in detail.
2588 * The header files no longer need to be processed into ANSI C and
2589 traditional C versions. There is just one set of files to install, and
2590 it will work with ANSI or old C compilers (including `gcc -traditional').
2592 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2593 MIPS DECStation running Ultrix 4.
2595 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2596 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2597 made itself into a shared library.
2599 * Yet further improved support for the i386, running 4.3 BSD-like systems
2600 (such as Mach 3 with the Unix single-server), or System V.
2602 * New function `strncasecmp' to do case-insensitive string comparison
2603 with limited length.
2605 * New function `strsep' is a reentrant alternative to `strtok'.
2607 * New functions `scandir' and `alphasort' for searching directories.
2609 * New function `setenv' is a better interface to `putenv'.
2611 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2612 function for traversing a directory tree.
2614 * The GNU obstack package is now also part of the C library.
2615 The new function `open_obstack_stream' creates a stdio stream that
2616 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2617 formatted output directly to an obstack.
2619 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2620 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2622 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2624 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2625 things to your strings.
2627 * There are some new test programs: test-fseek, testmb, and testrand.
2629 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2630 These ports are not finished, but are a good starting place for really
2631 supporting those systems.
2633 * `/etc/localtime' is now the standard location for the file that says what
2634 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2635 This follows the general principle that `/etc' is the place for all local
2636 configuration files.
2638 * The C library header files now use `extern "C"' when used by the C++
2639 compiler, so the C library should now work with C++ code.
2641 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2642 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2645 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2646 function which uses the `merge sort' algorithm, and is said to be
2647 significantly faster than the old GNU `qsort' function. Merge sort is
2648 now the standard `qsort' function. The new algorithm can require a lot
2649 of temporary storage; so, the old sorting function is called when the
2650 required storage is not available.
2652 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2653 provides the Unix `crypt' function, plus some other entry points.
2655 * The code and header files taken from 4.4 BSD have been updated with the
2656 latest files released from Berkeley.
2658 ----------------------------------------------------------------------
2659 Copyright information:
2661 Copyright (C) 1992-2015 Free Software Foundation, Inc.
2663 Permission is granted to anyone to make or distribute verbatim copies
2664 of this document as received, in any medium, provided that the
2665 copyright notice and this permission notice are preserved,
2666 thus giving the recipient permission to redistribute in turn.
2668 Permission is granted to distribute modified versions
2669 of this document, or of portions of it,
2670 under the above conditions, provided also that they
2671 carry prominent notices stating who last changed them.
2674 version-control: never