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 14341, 16517, 16519, 16520, 16734, 16973, 17787, 17905, 18084, 18086,
13 18240, 18265, 18370, 18421, 18480, 18525, 18618, 18647, 18661, 18674,
14 18681, 18778, 18781, 18787, 18789, 18790, 18795, 18796, 18820, 18823,
17 * The obsolete header <regexp.h> has been removed. Programs that require
18 this header must be updated to use <regex.h> instead.
22 * The following bugs are resolved with this release:
24 438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
25 14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
26 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
27 16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
28 17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
29 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
30 17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
31 17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
32 18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
33 18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
34 18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
35 18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
36 18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
37 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
38 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
39 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
40 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
41 18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
42 18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
43 18657, 18676, 18694, 18696.
45 * Cache information can be queried via sysconf() function on s390 e.g. with
46 _SC_LEVEL1_ICACHE_SIZE as argument.
48 * A buffer overflow in gethostbyname_r and related functions performing DNS
49 requests has been fixed. If the NSS functions were called with a
50 misaligned buffer, the buffer length change due to pointer alignment was
51 not taken into account. This could result in application crashes or,
52 potentially arbitrary code execution, using crafted, but syntactically
53 valid DNS responses. (CVE-2015-1781)
55 * The time zone file parser has been made more robust against crafted time
56 zone files, avoiding heap buffer overflows related to the processing of
57 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
58 large time zone data files. Overly long time zone specifiers in the TZ
59 variable no longer result in stack overflows and crashes.
61 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
62 for LD and GD on x86 and x86-64, has been implemented. You will need
63 binutils-2.24 or later to enable this optimization.
65 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
66 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
67 Hat). These updates cause user visible changes, such as the fix for bug
70 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
71 and getXXbyYY NSS calls for the same database, causing a denial-of-service
72 condition in some applications.
74 * Added vector math library named libmvec with the following vectorized x86_64
75 implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
77 The library can be disabled with --disable-mathvec. Use of the functions is
78 enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
79 Shared library libmvec.so is linked in as needed when using -lm (no need to
80 specify -lmvec explicitly for not static builds).
81 Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
83 * A new fmemopen implementation has been added with the goal of POSIX
84 compliance. The new implementation fixes the following long-standing
85 issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
86 old implementation is still present for use be by existing binaries.
88 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
89 releases. It has been fixed to match 2.19 and older, but binaries built
90 against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
92 * Port to Native Client running on ARMv7-A (--host=arm-nacl).
93 Contributed by Roland McGrath (Google).
95 * The header <regexp.h> is deprecated, and will be removed in a future
96 release. Use of this header will trigger a deprecation warning.
97 Application developers should update their code to use <regex.h> instead.
99 This header was formerly part of SUS, but was deprecated in 1994 and
100 removed from the standard in 2001. Also, the glibc implementation
101 leaks memory. See BZ#18681 for more details.
105 * The following bugs are resolved with this release:
107 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
108 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
109 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
110 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
111 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
112 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
113 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
114 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
115 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
116 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
119 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
120 too little memory for the to-be-scanned arguments and overflow the
121 allocated buffer. The implementation now correctly computes the required
122 buffer size when using malloc, and switches to malloc from alloca as
125 * A new semaphore algorithm has been implemented in generic C code for all
126 machines. Previous custom assembly implementations of semaphore were
127 difficult to reason about or ensure that they were safe. The new version
128 of semaphore supports machines with 64-bit or 32-bit atomic operations.
129 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
130 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
132 * Port to Altera Nios II has been contributed by Mentor Graphics.
134 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
135 implementations for powerpc64/powerpc64le.
136 Implemented by Adhemerval Zanella (IBM).
138 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
139 and powerpc64le. This may improve lock scaling of existing programs on
140 HTM capable systems. The lock elision code is only enabled with
141 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
142 powerpc will issue a transaction abort on every syscall to avoid side
143 effects being visible outside transactions.
145 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
146 AArch64. Contributed by ARM Ltd.
148 * i386 memcpy functions optimized with SSE2 unaligned load/store.
150 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
151 under certain input conditions resulting in the execution of a shell for
152 command substitution when the application did not request it. The
153 implementation now checks WRDE_NOCMD immediately before executing the
154 shell and returns the error WRDE_CMDSUB as expected.
156 * CVE-2012-3406 printf-style functions could run into a stack overflow when
157 processing format strings with a large number of format specifiers.
159 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
160 infinite loop if the DNS response contained a PTR record of an unexpected
163 * The minimum GCC version that can be used to build this version of the GNU
164 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
165 still be used to compile programs using the GNU C Library.
167 * The GNU C Library is now built with -Werror by default. This can be
168 disabled by configuring with --disable-werror.
170 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
172 * The obsolete sigvec function has been removed. This was the original
173 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
174 programs have been using instead for about 25 years. Of course, ABI
175 compatibility for old binaries using sigvec remains intact.
177 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
178 with newer versions of bison.
180 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
181 The original MIPS o32 hard-float ABI requires an FPU where double-precision
182 registers overlay two consecutive single-precision registers. MIPS32R2
183 introduced a new FPU mode (FR=1) where double-precision registers extend the
184 corresponding single-precision registers which is incompatible with the
185 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
186 require the use of FR=1 making a transition necessary. New o32 ABI
187 extensions enable users to migrate over time from the original o32 ABI
188 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
189 tracks the ABI of any loaded object and verifies that new objects are
190 compatible. Mode transitions will also be requested as required and
191 unsupportable objects will be rejected. The ABI checks include both soft and
192 hard float ABIs for o32, n32 and n64.
194 GCC 5 with GNU binutils 2.25 onwards:
195 It is strongly recommended that all o32 system libraries are built using the
196 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
197 with the original and all new o32 ABI extensions. Configure a MIPS GCC
198 compiler using --with-fp-32=xx to set this by default.
202 * The following bugs are resolved with this release:
204 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
205 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
206 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
207 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
208 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
209 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
210 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
211 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
212 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
213 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
214 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
215 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
216 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
217 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
218 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
220 * Reverted change of ABI data structures for s390 and s390x:
221 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
222 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
223 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
224 are preserved pointing straight to the same implementation as the old ones.
225 Given that, new callers will simply provide a too-big buffer to these
226 functions. Any applications/libraries out there that embed jmp_buf or
227 ucontext_t in an ABI-relevant data structure that have already been rebuilt
228 against 2.19 headers will have to rebuilt again. This is necessary in any
229 case to revert the breakage in their ABI caused by the glibc change.
231 * Support for file description locks is added to systems running the
232 Linux kernel. The standard file locking interfaces are extended to
233 operate on file descriptions, not file descriptors, via the use of
234 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
235 are associated with an open file instead of a process.
237 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
239 * The minimum Linux kernel version that this version of the GNU C Library
240 can be used with is 2.6.32.
242 * Running the testsuite no longer terminates as soon as a test fails.
243 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
244 with PASS or FAIL lines for individual tests. A summary of the results is
245 printed, including a list of failing lists, and "make check" exits with
246 error status if there were any unexpected failures. "make check
247 stop-on-test-failure=y" may be used to keep the old behavior.
249 * The am33 port, which had not worked for several years, has been removed
252 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
253 supported; they now act the same as _DEFAULT_SOURCE (but generate a
254 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
255 conflicted with POSIX (support for which was removed in 2.19), the
256 interfaces those macros enabled remain available when compiling with
257 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
260 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
262 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
263 This may improve lock scaling of existing programs on TX capable systems.
264 The lock elision code is only built with --enable-lock-elision=yes and
265 then requires a GCC version supporting the TX builtins. With lock elision
266 default mutexes are elided via __builtin_tbegin, if the cpu supports
267 transactions. By default lock elision is not enabled and the elision code
270 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
271 copy the path argument. This allowed programs to cause posix_spawn to
272 deference a dangling pointer, or use an unexpected pathname argument if
273 the string was modified after the posix_spawn_file_actions_addopen
276 * All supported architectures now use the main glibc sysdeps directory
277 instead of some being in a separate "ports" directory (which was
278 distributed separately before glibc 2.17).
280 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
281 On configurations that support it (all Linux configurations), it's now
282 used regardless of the --enable-add-ons switch to configure. It is no
283 longer possible to build such configurations without pthreads support.
285 * Locale names, including those obtained from environment variables (LANG
286 and the LC_* variables), are more tightly checked for proper syntax.
287 setlocale will now fail (with EINVAL) for locale names that are overly
288 long, contain slashes without starting with a slash, or contain ".." path
289 components. (CVE-2014-0475) Previously, some valid locale names were
290 silently replaced with the "C" locale when running in AT_SECURE mode
291 (e.g., in a SUID program). This is no longer necessary because of the
294 * On x86-64, the dynamic linker's lazy-binding support is now compatible
295 with application code using Intel MPX instructions. (With all previous
296 versions, the MPX register state could be clobbered when making calls
297 into or out of a shared library.) Note that while the new dynamic
298 linker is compatible with all known x86 hardware whether or not it
299 supports Intel MPX, some x86 instruction-set emulators might fail to
300 handle the new instruction encodings. This is known to affect Valgrind
301 versions up through 3.9 (but will be fixed in the forthcoming 3.10
302 release), and might affect other tools that do instruction emulation.
304 * Support for loadable gconv transliteration modules has been removed.
305 The support for transliteration modules has been non-functional for
306 over a decade, and the removal is prompted by security defects. The
307 normal gconv conversion modules are still supported. Transliteration
308 with //TRANSLIT is still possible, and the //IGNORE specifier
309 continues to be supported. (CVE-2014-5119)
311 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
312 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
313 resulting a denial-of-service security vulnerability in applications which
314 use functions related to iconv. (CVE-2014-6040)
318 * The following bugs are resolved with this release:
320 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
321 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
322 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
323 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
324 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
325 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
326 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
327 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
328 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
329 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
330 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
331 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
332 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
333 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
334 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
335 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
336 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
337 16431, 16453, 16474, 16506, 16510, 16529
339 * Slovenian translations for glibc messages have been contributed by the
340 Translation Project's Slovenian team of translators.
342 * The public headers no longer use __unused nor __block. This change is to
343 support compiling programs that are derived from BSD sources and use
344 __unused internally, and to support compiling with Clang's -fblock
345 extension which uses __block.
347 * CVE-2012-4412 The strcoll implementation caches indices and rules for
348 large collation sequences to optimize multiple passes. This cache
349 computation may overflow for large collation sequences and may cause a
350 stack or buffer overflow. This is now fixed to use a slower algorithm
351 which does not use a cache if there is an integer overflow.
353 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
354 rules for large collation sequences to optimize multiple passes and falls
355 back to alloca if malloc fails, resulting in a possible stack overflow.
356 The implementation now falls back to an uncached collation sequence lookup
359 * CVE-2013-4788 The pointer guard used for pointer mangling was not
360 initialized for static applications resulting in the security feature
361 being disabled. The pointer guard is now correctly initialized to a
362 random value for static applications. Existing static applications need
363 to be recompiled to take advantage of the fix (bug 15754).
365 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
366 to the d_name member of struct dirent, or omit the terminating NUL
367 character. (Bugzilla #14699).
369 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
370 aligned_alloc functions could allocate too few bytes or corrupt the
371 heap when passed very large allocation size values (Bugzilla #15855,
374 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
375 for AF_INET6 has been fixed (Bugzilla #16072).
377 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
378 pap_CW, quz_PE, the_NP.
380 * Substantially revised locales: gd_GB, ht_HT
382 * The LC_ADDRESS field was updated to support country_car for almost all
385 * ISO 1427 definitions were updated.
387 * ISO 3166 definitions were updated.
389 * The localedef utility now supports --big-endian and --little-endian
390 command-line options to generate locales for a different system from that
391 for which the C library was built.
393 * Binary locale files now only depend on the endianness of the system for
394 which they are generated and not on other properties of that system. As a
395 consequence, binary files generated with new localedef may be incompatible
396 with old versions of the GNU C Library, and binary files generated with
397 old localedef may be incompatible with this version of the GNU C Library,
398 in the following circumstances:
400 + Locale files may be incompatible on m68k systems.
402 + Locale archive files (but not separate files for individual locales) may
403 be incompatible on systems where plain "char" is signed.
405 * The configure option --disable-versioning has been removed. Builds with
406 --disable-versioning had not worked for several years.
408 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
409 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
411 * SystemTap probes for malloc have been introduced.
413 * SystemTap probes for slow multiple precision fallback paths of
414 transcendental functions have been introduced.
416 * Support for powerpc64le has been added.
418 * The soft-float powerpc port now supports e500 processors.
420 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
422 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
423 set of header declarations that are enabled by default, even when other
424 feature test macros or compiler options such as -std=c99 would otherwise
425 disable some of those declarations.
427 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
428 conflict with POSIX. The libbsd-compat library (which was a dummy library
429 that did nothing) has also been removed.
431 * Preliminary documentation about Multi-Thread, Async-Signal and
432 Async-Cancel Safety has been added.
434 * Change of ABI data structures for s390 and s390x:
435 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
436 allow for future hardware extensions. All library functions that accept or
437 return these structures were versioned in order to provide backwards
438 compatibility with existing code. However, not all cases can be handled
439 with interface versioning. If an application embeds either structure into
440 another structure and that structure is passed to another compilation unit
441 which expects the newer larger-sized object then any access to the new
442 fields will result in undefined behaviour. Similarly any access to fields
443 that were moved by the enlarging of the structures will cause undefined
444 behaviour. To fix the undefined behaviour all objects that are part of the
445 final in-memory image must agree on the size of structures, and this may
446 require recompilation.
450 * The following bugs are resolved with this release:
452 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
453 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
454 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
455 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
456 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
457 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
458 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
459 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
460 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
461 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
462 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
463 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
464 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
467 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
468 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
469 Distributions can re-enable building and using pt_chown via the new configure
470 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
471 considerable security risks and should only be used if the distribution
472 understands and accepts the risks.
474 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
477 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
478 fixed (Bugzilla #15330).
480 * Add support for calling C++11 thread_local object destructors on thread
481 and program exit. This needs compiler support for offloading C++11
482 destructor calls to glibc.
484 * Improved worst case performance of libm functions with double inputs and
487 * Support for priority inherited mutexes in pthread condition variables on
488 non-x86 architectures.
490 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
492 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
494 * Optimized string functions for ARM. Implemented by Will Newton and
497 * Optimized libm functions for SPARC. Implemented by David S. Miller.
499 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
502 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
503 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
505 * Added a benchmark framework to track performance of functions in glibc.
507 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
508 It is based on draft TS 18661 and currently enabled as a GNU extension.
510 * On Linux, the clock function now uses the clock_gettime system call
511 for improved precision, rather than old times system call.
513 * Added support for version-3 tz format files. This is needed when using
514 the tz database release 2013e or later, and affects a few unusual cases --
515 currently only TZ='America/Godthab' for time stamps after 2037.
517 * Added new API functions pthread_getattr_default_np and
518 pthread_setattr_default_np to get and set the default pthread
519 attributes of a process.
521 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
522 This may improve lock scaling of existing programs on TSX capable systems.
523 When the --enable-lock-elision=yes parameter is specified at configure
524 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
527 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
528 availability). Implemented by Ryan S. Arnold.
530 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
534 * The following bugs are resolved with this release:
536 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
537 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
538 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
539 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
540 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
541 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
542 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
543 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
544 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
545 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
546 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
547 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
548 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
549 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
550 14879, 14889, 14893, 14898, 14914.
552 * Optimization of memcpy for MIPS.
554 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
555 EMFILE has been fixed (Bugzilla #14889).
557 * The add-on ports collection is now distributed in the "ports" subdirectory
558 of the main GNU C Library distribution, rather than separately.
560 * Port to ARM AArch64 contributed by Linaro.
562 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
563 Optimized versions of memcpy, memset, and memcmp added for System z10 and
565 Implemented by Andreas Krebbel.
567 * The new function secure_getenv allows secure access to the environment,
568 returning NULL if running in a SUID/SGID process. This function replaces
569 the internal function __secure_getenv.
571 * SystemTap static probes have been added into the dynamic linker.
572 Implemented by Gary Benson.
574 * Optimizations of string functions strstr, strcasestr and memmem.
575 Implemented by Maxim Kuvyrkov.
577 * The minimum Linux kernel version that this version of the GNU C Library
578 can be used with is 2.6.16.
580 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
581 powerpc POWER7. Implemented by Will Schmidt.
583 * New configure option --disable-nscd builds the C library such that it
584 never attempts to contact the Name Service Caching Daemon (nscd).
585 New configure option --disable-build-nscd avoids building nscd itself;
586 this is the default if --disable-nscd is used.
588 * Improved support for cross-compilation, including cross-testing and
589 bootstrap builds without a previously built glibc.
591 * Several testsuite tests are now able to test multiple IFUNC variants of an
592 interface, rather than just testing the one that would be chooen by
595 * New configure options --with-bugurl and --with-pkgversion, for
596 distributors to use to embed their bug-reporting and package version
597 information in --help and --version output.
599 * The ttyname and ttyname_r functions on Linux now fall back to searching for
600 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
601 allows creation of chroots without the procfs mounted on /proc.
603 * The `crypt' function now fails if passed salt bytes that violate the
604 specification for those values. On Linux, the `crypt' function will
605 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
606 enabled, and fail on encrypted strings using the MD5 or DES algorithm
607 when the mode is enabled.
609 * The `clock_*' suite of functions (declared in <time.h>) is now available
610 directly in the main C library. Previously it was necessary to link with
611 -lrt to use these functions. This change has the effect that a
612 single-threaded program that uses a function such as `clock_gettime' (and
613 is not linked with -lrt) will no longer implicitly load the pthreads
614 library at runtime and so will not suffer the overheads associated with
615 multi-thread support in other code such as the C++ runtime library.
617 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
622 * The following bugs are resolved with this release:
624 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
625 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
626 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
627 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
628 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
629 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882,
630 11174, 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959,
631 12047, 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416,
632 12495, 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530,
633 13531, 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559,
634 13563, 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637,
635 13656, 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726,
636 13738, 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787,
637 13792, 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852,
638 13854, 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886,
639 13892, 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916,
640 13917, 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927,
641 13928, 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968,
642 13970, 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034,
643 14036, 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059,
644 14064, 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122,
645 14123, 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241,
648 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
649 configuring glibc with:
650 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
651 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
652 Implemented by H.J. Lu.
656 + define static_assert
658 + do not declare gets
660 + declare at_quick_exit and quick_exit also for ISO C11
662 + aligned_alloc. NB: The code is deliberately allows the size parameter
663 to not be a multiple of the alignment. This is a moronic requirement
664 in the standard but it is only a requirement on the caller, not the
669 + uchar.h support added
671 + CMPLX, CMPLXF, CMPLXL added
673 Implemented by Ulrich Drepper.
675 * Support for the IA-64 has been moved to ports.
677 * Remove support for anything but ELF binary format
679 * Checking versions of poll, ppoll added.
680 Implemented by Ulrich Drepper.
682 * More generic and 64-bit performance optimizations to math functions.
683 Implemented by Ulrich Drepper.
685 * New configure option --enable-obsolete-rpc makes the deprecated RPC
686 headers and functions available at compile time as they were before
687 version 2.14. This option will be removed at some time in the future
688 after the TI-RPC library becomes fully sufficient for the needs of
689 existing applications.
691 * Compatibility code for Linux kernel versions before 2.4 has been removed.
692 Note that glibc is not expected to work with any Linux kernel version
695 * New header <sys/auxv.h> and function getauxval allowing easy access to
696 the AT_* key-value pairs passed from the Linux kernel. The header also
697 defines the HWCAP_* bits associated with the AT_HWCAP key.
699 * New locales: mag_IN
701 * New configure option --enable-systemtap builds SystemTap static probes
702 into libc for setjmp and longjmp and into libpthread for various operations.
703 So far the setjmp/longjmp probes and some of the libpthread probes are
704 provided only for i*86 and x86_64.
705 Implemented by Roland McGrath and Rayson Ho.
707 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
709 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
712 * More optimized functions for SPARC. Implemented by David S. Miller.
714 * Improved support for cross-compilation, especially bootstrap builds
715 without a previously built glibc.
717 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
718 Chris Metcalf from Tilera.
720 * Support for the old ARM ABI has been removed from ports. Only the EABI is
721 now supported for ARM processors.
723 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
724 as the name of the dynamic linker, to distinguish it from the
725 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
727 * Support for CRIS has been removed from ports.
729 * A new class of installed header has been documented for low-level
730 platform-specific functionality. PowerPC added the first instance with a
731 function to provide time base register access. Contributed by Tulio
732 Magno Quites Machado Filho.
734 * ix86 configurations now install header files that are consistent with
735 what x86-64 configurations install. These same header files can be used
736 for -m32, -m64, or -mx32 builds.
737 Contributed by H.J. Lu.
739 * Math library bug fixes. A thorough audit of all open math library bugs was
740 conducted by Joseph Myers. Significant progress was made on many math
741 library bugs resulting in more accurate exceptions and function results.
742 Many thanks to all those that contributed including Andreas Jaeger for his
743 patch review and work on the x87 trigonometric instruction issues.
745 * Timezone data is no longer installed. Timezone-related binaries and scripts
746 will continue to be installed. Users should obtain their timezone data from
747 their distribution provider or from the tzdata package at
748 <ftp://munnari.oz.au/pub/>.
752 * The following bugs are resolved with this release:
754 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
755 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
756 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
757 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
758 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
759 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
760 13484, 13506, 13515, 13523, 13524, 13538, 13540
762 * New program pldd to list loaded object of a process
763 Implemented by Ulrich Drepper.
765 * Add nss_db support back to glibc. No more dependency on Berkeley db
766 and support for initgroups lookups.
767 Implemented by Ulrich Drepper.
769 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
770 Contributed by HJ Lu.
772 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
773 Contributed by HJ Lu.
775 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
776 on x86-32 and x86-64.
777 Contributed by Liubov Dmitrieva.
779 * Optimized strchr and strrchr for SSE on x86-32.
780 Contributed by Liubov Dmitrieva.
782 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
783 for x86-64 and x86-32.
784 Contributed by Liubov Dmitrieva.
786 * New interfaces: scandirat, scandirat64
787 Implemented by Ulrich Drepper.
789 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
790 Implemented by Ulrich Drepper.
792 * nscd now also caches the netgroup database.
793 Implemented by Ulrich Drepper.
795 * Integrate libm with gcc's -ffinite-math-only option.
796 Implemented by Ulrich Drepper.
798 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
799 to math functions. Implemented by Ulrich Drepper.
801 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
802 Implemented by Ulrich Drepper.
804 * New Linux interfaces: process_vm_readv, process_vm_writev
806 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
807 Implemented by Ulrich Drepper.
809 * Optimized nearbyint and strcasecmp for PPC.
810 Implemented by Adhemerval Zanella.
812 * New locales: bho_IN, unm_US, es_CU, ta_LK
816 * The following bugs are resolved with this release:
818 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
819 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
820 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
821 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
822 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
823 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
824 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
825 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
826 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
827 12795, 12811, 12813, 12814, 12841
829 * The RPC implementation in libc is obsoleted. Old programs keep working
830 but new programs cannot be linked with the routines in libc anymore.
831 Programs in need of RPC functionality must be linked against TI-RPC.
832 The TI-RPC implementation is IPv6 enabled and there are other benefits.
834 Visible changes of this change include (obviously) the inability to link
835 programs using RPC functions without referencing the TI-RPC library and the
836 removal of the RPC headers from the glibc headers.
837 Implemented by Ulrich Drepper.
839 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
840 syncfs, setns, sendmmsg
842 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
843 yue_HK, lij_IT, mhr_RU
845 * New encodings: CP770, CP771, CP772, CP773, CP774
847 * New program sotruss to trace calls through PLTs
848 Implemented by Ulrich Drepper.
850 * The malloc hook implementation is marked deprecated and will be removed
851 from the default implementation in the next version. The design never
852 worked ever since the introduction of threads. Even programs which do
853 not create threads themselves can use multiple threads created internally.
857 * The following bugs are resolved with this release:
859 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
860 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
861 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
862 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
865 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
867 * POWER7 optimizations: memset, memcmp, strncmp
869 * New optimized string functions for x86-64: strnlen (SSE2),
870 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
871 Implemented by Ulrich Drepper.
875 * The following bugs are resolved with this release:
877 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
878 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
879 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
880 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
881 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
882 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
883 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
884 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
886 * New interfaces: pthread_getname_np, pthread_setname_np
888 * New Linux interface: recvmmsg
890 * STT_GNU_IFUNC implemented for Sparc by David Miller.
892 * The dynamic linker now recognizes supported ABI versions from the
893 EI_ABIVERSION field in the ELF header.
894 Implemented by Ulrich Drepper.
896 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
897 will not be used to fill in password fields in the passwd.byname replies.
898 Instead it is used to synthesize the shadow.byname table, should it be
899 missing. This is a useful mode in some installations involving Solaris.
900 Implemented by Ulrich Drepper.
902 * New locales: kok_IN, sq_MK, cv_RU
906 * The following bugs are resolved with this release:
908 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
909 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
910 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
911 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
912 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
913 10789, 10817, 10823, 10840, 10847
915 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
917 Implemented by Ulrich Drepper.
919 * Checking version of longjmp added that fails if an uninitialized stack
920 frame would be created. Implemented by Ulrich Drepper.
922 * STT_GNU_IFUNC is now supported in static executables.
923 Implemented by H.J. Lu.
925 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
927 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
928 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
929 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
930 Contributed by H.J. Lu.
932 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
933 Implemented by Ulrich Drepper.
935 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
937 Contributed by H.J. Lu.
939 * Support for fma instruction in AVX on x86-64.
940 Implemented by H.J. Lu and Ulrich Drepper.
942 * AVX support in x86-64 auditing support in ld.so.
943 Implemented by H.J. Lu.
945 * STB_GNU_UNIQUE support added.
946 Implemented by Ulrich Drepper.
948 * Implement second fallback mode for optimized DNS lookup for even more
949 broken environments. If two requests from the same port are not
950 handled correctly close the socket and open a new one before sending
951 the second request. The 'single-request-reopen' option in /etc/resolv.conf
952 can be used to select this mode right away, instead of rediscovering the
953 necessity is every process again.
954 Implemented by Ulrich Drepper.
956 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
957 Implemented by Adam Tkac.
959 * Optimized iconv conversions for S390x.
960 Implemented by Andreas Krebbel.
962 * Using condvars with PI mutexes is now more efficient due to kernel
963 support for requeueing to PI futexes. NPTL support added for x86-64.
964 Implemented by Ulrich Drepper.
966 * New locales: ps_AF, my_MM
970 * The following bugs are resolved with this release:
972 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
973 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
974 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
975 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
976 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
978 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
979 Implemented by Ulrich Drepper.
981 * New Linux interfaces: accept4, fallocate, fallocate64.
982 Implemented by Ulrich Drepper.
984 * Correct declarations of string function when used in C++ code. This
985 could lead to compile errors for invalid C++ code.
987 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
990 * New POSIX 2008 interface: psiginfo
991 Implemented by Ulrich Drepper.
993 * New ISO C++1x interfaces: quick_exit, at_quick_exit
994 Implemented by Ulrich Drepper.
996 * Support for selecting between multiple function definitions at runtime
997 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
999 * The libcrypt library can now use the hash function implementations in
1000 NSS. Implemented by Ulrich Drepper.
1002 * The malloc implementation can be compiled to be less memory efficient
1003 but higher performing in multi-threaded programs.
1004 Implemented by Ulrich Drepper.
1006 * New locales: nan_TW@latin, ks_IN
1008 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
1009 Implemented by Ulrich Drepper.
1011 * Extended printf hook support. It is possible to use user-defined types
1012 and extend existing format specifiers.
1013 Implemented by Ulrich Drepper.
1015 * Handling for group shadow files has been added.
1016 Implemented by Ulrich Drepper.
1018 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
1019 servers (the case, e.g., for some people using the built-in DNS
1020 server in ADSL modems/routers). There is a once-per-process timeout
1021 in case of a broken server. To avoid it, users can run nscd or put
1022 'options single-request' in /etc/resolv.conf.
1023 Implemented by Ulrich Drepper.
1027 * The following bugs are resolved with this release:
1029 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
1030 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
1031 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
1032 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
1033 6968, 6974, 6980, 6995, 7008, 7009, 7029
1035 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
1036 up at the same time. Implemented by Ulrich Drepper.
1038 * TLS descriptors for LD and GD on x86 and x86-64.
1039 Implemented by Alexandre Oliva.
1041 * getaddrinfo now handles DCCP and UDPlite.
1042 Implemented by Ulrich Drepper.
1044 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
1045 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
1046 Implemented by Ulrich Drepper.
1048 * New implementation of memmem, strstr, and strcasestr which is O(n).
1049 Implemented by Eric Blake.
1051 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
1053 * Implement "e" option for popen to open file descriptor with the
1054 close-on-exec flag set. Implemented by Ulrich Drepper.
1056 * Implement "b" mode for fmemopen. In this mode writes writes don't
1057 implicitly add a NUL byte and seeks from the end of the buffer really
1058 use the buffer end, not the string length as the basis.
1059 Implemented by Ulrich Drepper.
1061 * Many functions, exported and internal, now atomically set the close-on-exec
1062 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
1064 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
1066 Implemented by Pravin Satpute.
1068 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
1072 * The following bugs are resolved with this release:
1074 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
1075 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
1076 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
1077 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
1078 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
1079 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
1080 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
1082 * New locales: bo_CN, bo_IN, shs_CA.
1084 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
1086 * Sorting rules for some Indian languages (Devanagari and Gujarati).
1087 Implemented by Pravin Satpute.
1089 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
1091 * nscd caches now all timeouts for DNS entries
1092 Implemented by Ulrich Drepper.
1094 * nscd is more efficient and wakes up less often.
1095 Implemented by Ulrich Drepper.
1097 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
1098 vdprintf, and obstack_vprintf.
1099 Implemented by Jakub Jelinek.
1101 * Faster memset for x86-64.
1102 Implemented by Harsha Jagasia and H.J. Lu.
1104 * Faster memcpy on x86.
1105 Implemented by Ulrich Drepper.
1107 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
1108 Implemented by Ulrich Drepper.
1110 * Faster sqrt and sqrtf implemention for some PPC variants.
1111 Implemented by Steven Munroe.
1115 * The following bugs are resolved with this release:
1117 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
1118 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
1119 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
1120 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
1121 5071, 5103, 5104, 5112, 5113, 5184, 5186
1123 * More checking functions: fread, fread_unlocked, open*, mq_open.
1124 Implemented by Jakub Jelinek and Ulrich Drepper.
1126 * Extend fortification to C++. Implemented by Jakub Jelinek.
1128 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
1129 by not recognizing 'a' as a modifier when those specs are requested.
1130 Implemented by Jakub Jelinek.
1132 * PPC optimizations to math and string functions.
1133 Implemented by Steven Munroe.
1135 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
1136 options to be passed. Implemented by Ulrich Drepper.
1138 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
1140 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
1141 Implemented by Ulrich Drepper.
1143 * Handle private futexes in the NPTL implementation.
1144 Implemented by Jakub Jelinek and Ulrich Drepper.
1146 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
1147 Implemented by Roland McGrath and Ulrich Drepper.
1149 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
1151 * SHA-256 and SHA-512 based password encryption.
1152 Implemented by Ulrich Drepper.
1154 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
1155 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
1158 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
1159 Implemented by Ulrich Drepper.
1163 * The following bugs are resolved with this release:
1165 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1166 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1167 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1168 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1169 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1170 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1171 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1174 * New Linux interfaces: epoll_pwait, sched_getcpu.
1176 * New generic interfaces: strerror_l.
1178 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1182 * The following bugs are resolved with this release:
1184 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1185 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1186 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1187 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1188 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1189 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1190 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1191 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1192 3225, 3251, 3252, 3253, 3273
1194 * For Linux, the sorting of addresses returned by getaddrinfo now also
1195 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1196 Implemented by Ulrich Drepper.
1198 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1199 Implemented by Ulrich Drepper.
1201 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1203 * New iconv module for MIK. Contributed by Alexander Shopov.
1205 * For sites with broken group and/or passwd database, the auto-propagate
1206 option of nscd can prevent creating ID lookup entries from the results
1207 of a name lookup and vice versa. This usually is no problem but some
1208 site might have problems with the default behavior.
1209 Implemented by Ulrich Drepper.
1211 * Iterating over entire database in NIS can be slow. With the
1212 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1213 to trade time for memory. The entire database will be read at once.
1214 Implemented by Ulrich Drepper.
1216 * The interfaces introduced in RFC 3542 have been implemented by
1219 * Support for the new ELF hash table format was added by Ulrich Drepper.
1221 * Support for priority inheritance mutexes added by Jakub Jelinek and
1224 * Support for priority protected mutexes added by Jakub Jelinek.
1226 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1227 or_IN, csb_PL, fy_NL, sr_ME.
1231 * More overflow detection functions.
1233 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1234 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1236 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1237 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1238 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1239 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1240 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1241 by Masahide Washizawa.
1243 * It is now possible to install audit libraries for the dynamic linker using
1244 LD_AUDIT. Implemented by Ulrich Drepper.
1246 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1247 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1248 For a libc and libpthread that works well on Linux 2.4 kernels, we
1249 recommend using the stable 2.3 branch.
1251 * The new function open_wmemstream acts like open_memstream,
1252 but uses a wchar_t wide character buffer.
1254 * The new function ppoll is an improved version of poll, similar to pselect.
1256 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1257 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1258 renameat, unlinkat, linkat, symlinkat, readlinkat.
1260 * New Linux kernel system calls: unshare,
1261 inotify_init, inotify_add_watch, inotify_rm_watch.
1263 * The euidaccess function is now also known by the alias eaccess,
1264 for compatibility with some other systems.
1266 * Timezone data updated to 2006b version.
1270 * The following bugs are resolved with this release:
1272 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1273 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1274 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1275 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1276 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1277 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1279 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1281 * As of this release, GCC 4 can be used to compile the C Library.
1283 * Timezone data updated to 2005m version.
1287 * The following bugs are resolved with this release:
1289 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1290 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1291 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1292 777, 787, 821, 822, 823, 825
1294 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1298 * Support for RFC 3678. Real implementations exist only for Linux so far.
1299 Implemented by Ulrich Drepper.
1301 * nscd can now cache entries persistently. Expiring entries are reloaded.
1302 For speedups the cache can be shared in memory with client processes.
1303 Implemented by Ulrich Drepper.
1305 * nscd can now perform SELinux checks.
1306 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1308 * getaddrinfo queries are now cached. Canonical name lookup is performed
1310 Implemented by Ulrich Drepper.
1312 * The nothrow function attribute is used when headers are used by gcc when
1313 compiling C code. This can avoid significant amounts of exception
1316 * The malloc functions perform more error checking and are stricter when
1317 it comes to reacting on errors. The default action is to terminate
1318 the process after showing an error message. Implemented by Ulrich Drepper.
1320 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1321 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1323 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1324 namespaces using the new function dlmopen(). This feature is of course,
1325 like most other dynamic loading functionality, not available in statically
1326 linked applications. Implemented by Ulrich Drepper.
1328 * Low-overhead boundary checking variants of string and some stdio functions
1329 were added. These are to be used in conjunction with a gcc patch by
1330 Jakub Jelinek which adds calls to these functions if possible.
1331 Implemented by Jakub Jelinek and Ulrich Drepper.
1333 * Old code for several operating systems and machine architectures that
1334 have not been in working condition in a long time have been removed from
1335 the main source tree maintained by the GNU C Library's maintainers.
1336 These files are now reside in the separate `ports' source module
1337 that is usable as an add-on when building the library.
1341 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1342 interrogate the dynamic linker, compatible with the Solaris interface.
1344 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1345 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1347 * getifaddrs now uses the netlink interface on Linux to get its information.
1348 Implemented by Thorsten Kukuk.
1350 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1351 Implemented by Ulrich Drepper.
1353 * support for non-executable stacks on x86 has been added. Changes mostly
1356 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1359 * getaddrinfo now performs destination address selection according to
1364 * Thread-safe interfaces for many functions that access locale data
1365 were added in version 2.3, but these features were omitted from NEWS.
1366 Many functions have variants with an `_l' suffix that take a `locale_t'
1367 object as a parameter rather than consulting the current locale.
1368 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1369 create and maintain `locale_t' objects. Additionally, the new function
1370 `uselocale' sets "the current locale" (as used by functions not so
1371 parameterized) set for an individual thread. These features were added
1372 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1374 * The functions getresuid, getresgid, setresuid, and setresgid, which
1375 have long been available on Linux, are now declared in <unistd.h>
1376 and are now also available on the Hurd.
1378 * ELF thread-local storage support (TLS) now works on x86-64.
1380 * The new dynamic string token $LIB is expanded in shared library names.
1381 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1383 * Aldy Hernandez contributed complete software floating point support for
1384 PowerPC machines with no FPU.
1386 * fexecve is implemented on Linux.
1388 * The `btowc' function should work at least twice as fast due to
1389 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1391 * With approriate thread add-ons cancelable functions are now implemented
1392 in libc.so as well. No need to call the function in libpthread. This
1393 change allowed to finally disable the incorrect and expensive handling
1394 of weak definition in ld.so.
1396 * Yet more PLT entries in libc.so have been removed. We finally arrived
1397 at the bare minimum. Startup times improved appropriately.
1399 * Support for the new Linux/x86 system call interface was added. The
1400 AT_SYSINFO auxiliary vector entry is recognized and handled.
1404 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1407 * iconv (the program and the interface) now accepts empty names (excluding
1408 options like //TRANSLIT) to mean "use charset of current locale".
1410 * localedef can now transliterate characters in strings which are not in
1411 the provided charmap. The information from the input locale is used.
1413 * Prelinking support was added for ELF targets. This requires additional
1414 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1416 * Read-only stdio streams now use mmap to speed up operation by eliminating
1417 copying and buffer underflows. To use add 'm' to the mode string of
1418 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1420 * The malloc functions were completely rewritten by Wolfram Gloger based
1421 on Doug Lea's malloc-2.7.0.c.
1423 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1424 implementation of regex.
1426 * Bruno Haible upgraded the iconv and locale implementation to support
1429 * Contents of the LC_* and LANG environment variables in the CEN style are
1430 not recognized anymore. It never was used. Change by Ulrich Drepper.
1432 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1433 thread-local storage (TLS) ABI on some platforms.
1434 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1436 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1437 EUC-JISX0213, and TSCII.
1439 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1440 BSD-compatible interface for getting all network interface addresses.
1441 Implementation for IPv4 by Roland McGrath.
1443 * Loading of locale data is faster due to the introduction of a locale
1444 archive. Implemented by Roland McGrath and Ulrich Drepper.
1446 * Startup times are significantly reduced by not using exported functions
1447 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1450 * Steven Munroe contributed a port to PowerPC64/Linux.
1454 * The Hurd now uses the GNU libio implementation of stdio rather than the
1455 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1457 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1458 with the same behavior as the Linux system call of the same name.
1462 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1463 128-bit long double format.
1465 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1466 IBM1161, and IBM1162 charsets.
1468 * Andreas Jaeger contributed a port to x86-64/Linux.
1470 * Peter Bruin contributed a port to PowerPC/Hurd.
1472 * libc functions using I/O streams now can handle wide-oriented streams
1475 * optimizations in the dynamic linker. Binaries created by recent binutils
1476 versions start up quicker due to reduced time spent on relocations.
1478 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1482 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1483 asinh, atanh, j0 for the 128-bit long double format.
1485 * Bruno Haible updated all the code handling Unicode in some form to
1486 support Unicode 3.1.
1488 * Speed of regex for single-byte locales is back to previous levels.
1489 Patch by Isamu Hasegawa.
1491 * Alpha, SPARC, and IA-64 now also using floating stacks.
1493 * Startup time of internationalized applications greatly improved through
1494 iconv cache. Use iconvconfig to generate the cache file.
1495 Contributed by Ulrich Drepper.
1497 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1498 severe performance problems. Patch by David Mosberger.
1500 * The Hurd port got a lot more functionality like AIO, various stdio
1501 extensions, etc. Mainly done by Roland McGrath.
1503 * mtrace can now lookup symbols in shared libraries.
1507 * Intel's IA-64 math library is largely integrated. It provides fast and
1508 accurate implementatations for most basic and standard math functions
1509 in float, double, and long double format.
1511 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1512 and asin for the 96-bit long double format and asin, log, tan for the
1513 128-bit long double format.
1515 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1516 The basic double functions exist today. Contributed by Abraham Ziv
1517 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1518 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1520 * An asynchronous name lookup library was added. The interface is designed
1521 after POSIX AIO. The proposal was circulated beforehand to get comments.
1522 No negative ones came in. Implemented by Ulrich Drepper.
1524 * Port to S390/64bit contributed by Martin Schwidefsky
1525 <schwidefsky@de.ibm.com>.
1527 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1528 of functions for Linux/IA-64.
1530 * The RPC code is now thread safe. Threads can now use the same service
1531 of different services at the same time. Patch by Eric Norum
1532 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1534 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1535 family of functions for Linux/S390.
1537 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1538 of functions for Linux/x86.
1540 * Port to Linux/CRIS contributed by Axis Communications.
1544 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1545 we can now check for namespace violations and missing declarations. The
1546 result is that almost all headers are now Unix-compliant (as defined in
1547 the upcoming XPG6). The negative side is that some programs might need
1548 corrections, too, if they depend on the incorrect form of the headers in
1549 previous versions which defined too many symbols and included too many
1552 * regex now handles multibyte character sets correctly.
1553 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1555 * iconv (the program) does now conform to the upcoming XPG6 and handles
1556 charmaps. Instead of the charset names the path of charmaps can be
1557 provided and the conversion happens based on this data.
1558 Contributed by Ulrich Drepper.
1560 * The locale program now provides detailed information about the installed
1565 only lists the names of the supported locales
1569 provides details such as country, language, and codeset name.
1570 Contributed by Ulrich Drepper.
1574 * The gencat program now parses the input file according to the charset
1575 selected by the LC_CTYPE category. This is important for stateful
1576 character sets. To make generating catalogs easier there is a way
1577 to overwrite the charset selected by the locale: before the first
1578 message or $ quote line the catalog can contain a line like
1580 $ codeset=ISO-8859-2
1582 to select the charset (ISO-8859-2 in this case).
1584 Implemented by Shinya Hanataka and Ulrich Drepper.
1586 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1587 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1588 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1590 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1591 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1593 * The LANGUAGE environment variable is now ignored unless the locale is
1594 changed from the default "C" locale.
1596 * The usual bug fixes.
1600 * Greg McGary added runtime support for bounds checking using gcc's
1601 new -fbounded-pointers option. ix86 target is complete. PowerPC
1604 * Thorsten Kukuk added secure mode support to nscd.
1606 * The Berkeley db libraries have been removed.
1608 Related, the nss_db module is now in a separate package since it
1609 obviously requires a database library being available.
1611 * Wide character I/O streams implemented by Ulrich Drepper.
1613 * Functions from the extended socket API added by Ulrich Drepper.
1615 * Functions feenableexcept and fedisableexcept to control the
1616 behaviour of individual exceptions have been added by Andreas Jaeger.
1618 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1620 * The resolver code has been updated from bind 8.2.3-T5B which supports
1621 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1624 This change could in some situations effect backward compatibility. Since
1625 now `_res' is a thread-local instead of a global variable, modifying it
1626 in one thread does not have any effect in other threads.
1628 The resolver library was also extended to allow IPv6 as the transport
1629 protocol for the requests. This work was done by Stig Venaas.
1631 * Compatibility code for K&R C compilers has been removed from the
1632 header files. A ISO C compiler is needed to use the library
1633 (conforming to either C89 or C99 standard).
1635 * Complete rewrite of the localedef program to support multibyte character
1636 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1637 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1638 Implemented by Ulrich Drepper.
1640 Bruno Haible significantly improved the generation and use of the data
1641 structures for the wide character tables.
1643 * Plural handling in gettext implemented by Ulrich Drepper.
1645 * The utmp daemon has been removed.
1647 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1649 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1652 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1654 * POSIX barriers implemented by Kaz Kylheku.
1656 * POSIX spawn function family implemented by Ulrich Drepper.
1658 * POSIX spinlocks are now available.
1660 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1662 * the configure option --enable-kernel=X.Y.Z allows to strip out
1663 compatibility for kernel versions before X.Y.Z. This is currently only
1664 implemented for Linux.
1666 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1667 field sin6_scope_id. This means that all programs using IPv6 should be
1668 recompiled. Don't expect binary compatibility with previous glibc
1671 * various conversion modules for IBM character sets contributed by
1674 * IA-64 port by Jes Sorensen and HJ Lu.
1688 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1690 * New xdr functions are added; some rpc functions are now 64bit clean.
1692 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1694 * Fixed known incompatibilities with glibc 2.0.
1696 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1698 * Optimized a number of functions (especially the ELF dynamic loader).
1700 * Update timezone data files.
1702 * lots of charmaps corrections
1704 * some new locale definitions and charmaps
1709 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1710 conform to POSIX member type requirements. Symbol versions have been
1711 adjusted as needed within the library, and for direct use by applications,
1712 but there is potential for problems if third-party libraries use
1713 struct timeval as part of their interface. This does not present
1714 a problem for X and other "essential" system libraries.
1716 * An additional locale model to support C++ Standard Library locale
1717 model and probably more was implemented by Ulrich Drepper.
1719 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1722 * Miles Bader provided the `argp' function family to support hierachical
1723 command line argument parsing, layered on top of getopt.
1725 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1727 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1730 * scanf recognizes the %a and %A format for scanning floating point numbers.
1732 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1733 information and interfaces for the available integer types.
1735 * about 130 new math functions were added to implement the ISO C9x math
1738 * the new header <complex.h> contains definitions of the complex math
1739 functions from ISO C 9X.
1741 * the new header <tgmath.h> defines generic macros to use complex or
1742 real valued functions.
1744 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1746 * Andreas Jaeger provided a test suite for the math library.
1748 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1750 * Ulrich Drepper added character set conversion functions (iconv).
1752 * Optimized string functions have been added.
1754 * The localedata addon is now part of glibc.
1756 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1758 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1759 daemon for NSS (nscd).
1761 Missing a better place here are some numbers on improvements. Under
1762 Linux 2.1.125 un-tar-ing the kernel sources takes
1766 using local files 12.19s 6.88s 22.91s
1768 using NIS 13.92s 8.91s 26.34s
1770 using NIS & nscd 10.37s 7.34s 25.30s
1772 using NIS+ 27.57s 30.37s 640.46s
1774 using NIS+ & nscd 10.25s 7.83s 26.51s
1776 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1778 Keep in mind that non-namelookup related operations dominate above times.
1779 It was just a common complain that using NIS+ unpacking the kernel is
1782 [1] The old nscd implementation is not available anymore since it was
1783 distributed with glibc up to version 2.0.98 and thus is now replaced.
1785 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1787 * Mark Kettenis provided a Hesiod NSS module.
1789 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1790 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1792 * rcmd can now handle netgroups (Dick Streefland).
1794 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1797 * Support for the IPv6 protocol has been added to the socket API, as per the
1798 latest draft standards.
1800 * Support for Linux 2.2 has been added.
1802 * Interface changes relative to the latest 2.0.x release:
1803 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1804 addseverity NEW: Unix98
1805 alphasort64 NEW: LFS
1806 argp_err_exit_status NEW: argp, GNU ext
1807 argp_error NEW: argp, GNU ext
1808 argp_failure NEW: argp, GNU ext
1809 argp_help NEW: argp, GNU ext
1810 argp_parse NEW: argp, GNU ext
1811 argp_program_bug_address NEW: argp, GNU ext
1812 argp_program_version NEW: argp, GNU ext
1813 argp_program_version_hook NEW: argp, GNU ext
1814 argp_state_help NEW: argp, GNU ext
1815 argp_usage NEW: argp, GNU ext
1816 authdes_create NEW: Secure RPC
1817 authdes_getucred NEW: Secure RPC
1818 authdes_pk_create NEW: Secure RPC
1819 backtrace NEW: GNU ext.
1820 backtrace_symbols NEW: GNU ext.
1821 backtrace_symbols_fd NEW: GNU ext.
1823 cacosf NEW: ISO C 9x
1824 cacosh NEW: ISO C 9x
1825 cacoshf NEW: ISO C 9x
1826 cacoshl NEW: ISO C 9x
1827 cacosl NEW: ISO C 9x
1834 casinf NEW: ISO C 9x
1835 casinh NEW: ISO C 9x
1836 casinhf NEW: ISO C 9x
1837 casinhl NEW: ISO C 9x
1838 casinl NEW: ISO C 9x
1840 catanf NEW: ISO C 9x
1841 catanh NEW: ISO C 9x
1842 catanhf NEW: ISO C 9x
1843 catanhl NEW: ISO C 9x
1844 catanl NEW: ISO C 9x
1845 cbc_crypt NEW: Secure RPC
1849 ccoshf NEW: ISO C 9x
1850 ccoshl NEW: ISO C 9x
1856 cimagf NEW: ISO C 9x
1857 cimagl NEW: ISO C 9x
1858 clearerr_locked REMOVED
1859 clntunix_create NEW: sunrpc ext
1861 clog10 NEW: ISO C 9x
1862 clog10f NEW: ISO C 9x
1863 clog10l NEW: ISO C 9x
1873 cprojf NEW: ISO C 9x
1874 cprojl NEW: ISO C 9x
1876 crealf NEW: ISO C 9x
1877 creall NEW: ISO C 9x
1882 csinhf NEW: ISO C 9x
1883 csinhl NEW: ISO C 9x
1886 csqrtf NEW: ISO C 9x
1887 csqrtl NEW: ISO C 9x
1891 ctanhf NEW: ISO C 9x
1892 ctanhl NEW: ISO C 9x
1894 des_setparity NEW: Secure RPC
1895 ecb_crypt NEW: Secure RPC
1896 endutxent NEW: Unix98
1898 exp10f NEW: ISO C 9x
1899 exp10l NEW: ISO C 9x
1903 fattach NEW: STREAMS
1904 fdetach NEW: STREAMS
1908 feclearexcept NEW: ISO C 9x
1909 fegetenv NEW: ISO C 9x
1910 fegetexceptflag NEW: ISO C 9x
1911 fegetround NEW: ISO C 9x
1912 feholdexcept NEW: ISO C 9x
1914 feraiseexcept NEW: ISO C 9x
1915 ferror_locked REMOVED
1916 fesetenv NEW: ISO C 9x
1917 fesetexceptflag NEW: ISO C 9x
1918 fesetround NEW: ISO C 9x
1919 fetestexcept NEW: ISO C 9x
1920 feupdateenv NEW: ISO C 9x
1921 fflush_locked REMOVED
1925 fgets_unlocked NEW: GNU ext.
1926 fileno_locked REMOVED
1938 fputc_locked REMOVED
1939 fputs_unlocked NEW: GNU ext.
1940 fread_unlocked NEW: GNU ext.
1945 fstatvfs NEW: Unix98
1949 ftruncate64 NEW: LFS
1951 fwrite_unlocked NEW: GNU ext.
1952 gai_strerror NEW: IPv6
1956 getchar_locked REMOVED
1958 getdate_err NEW: Unix98
1959 getdate_r NEW: GNU ext.
1961 getnameinfo NEW: IPv6
1962 getnetname NEW: Secure RPC
1963 getpmsg NEW: STREAMS
1964 getpt NEW: Unix98 PTY
1965 getrlimit64 NEW: LFS
1966 getutxent NEW: Unix98
1967 getutxid NEW: Unix98
1968 getutxline NEW: Unix98
1969 glob64 NEW: GNU ext.
1970 globfree64 NEW: GNU ext.
1971 gnu_get_libc_release NEW: GNU ext.
1972 gnu_get_libc_version NEW: GNU ext.
1973 grantpt NEW: Unix98 PTY
1974 host2netname NEW: Secure RPC
1976 iconv_close NEW: iconv
1977 iconv_open NEW: iconv
1978 if_freenameindex NEW: IPv6
1979 if_indextoname NEW: IPv6
1980 if_nameindex NEW: IPv6
1981 if_nametoindex NEW: IPv6
1982 in6addr_any NEW: IPv6
1983 in6addr_loopback NEW: IPv6
1984 inet6_isipv4mapped NEW: IPv6
1985 isastream NEW: STREAMS
1986 iswblank NEW: GNU ext.
1987 key_decryptsession NEW: Secure RPC
1988 key_decryptsession_pk NEW: Secure RPC
1989 key_encryptsession NEW: Secure RPC
1990 key_encryptsession_pk NEW: Secure RPC
1991 key_gendes NEW: Secure RPC
1992 key_get_conv NEW: Secure RPC
1993 key_secretkey_is_set NEW: Secure RPC
1994 key_setnet NEW: Secure RPC
1995 key_setsecret NEW: Secure RPC
1996 llrint NEW: ISO C 9x
1997 llrintf NEW: ISO C 9x
1998 llrintl NEW: ISO C 9x
1999 llround NEW: ISO C 9x
2000 llroundf NEW: ISO C 9x
2001 llroundl NEW: ISO C 9x
2006 lrintf NEW: ISO C 9x
2007 lrintl NEW: ISO C 9x
2008 lround NEW: ISO C 9x
2009 lroundf NEW: ISO C 9x
2010 lroundl NEW: ISO C 9x
2012 makecontext NEW: Unix98
2013 mempcpy NEW: GNU ext.
2016 modify_ldt NEW: kernel
2020 nearbyint NEW: ISO C 9x
2021 nearbyintf NEW: ISO C 9x
2022 nearbyintl NEW: ISO C 9x
2023 netname2host NEW: Secure RPC
2024 netname2user NEW: Secure RPC
2025 nexttoward NEW: ISO C 9x
2026 nexttowardf NEW: ISO C 9x
2027 nexttowardl NEW: ISO C 9x
2031 passwd2des NEW: Secure RPC
2033 pow10f NEW: GNU ext.
2034 pow10l NEW: GNU ext.
2037 printf_size NEW: GNU ext.
2038 printf_size_info NEW: GNU ext.
2039 profil_counter REMOVED
2040 pthread_mutexattr_getkind_np REPLACED
2041 pthread_mutexattr_setkind_np REPLACED
2042 ptsname NEW: Unix98 PTY
2043 ptsname_r NEW: Unix98 PTY
2045 putchar_locked REMOVED
2046 putgrent NEW: GNU ext.
2048 putpmsg NEW: STREAMS
2049 pututxline NEW: Unix98
2053 readdir64_r NEW: LFS
2054 remquo NEW: ISO C 9x
2055 remquof NEW: ISO C 9x
2056 remquol NEW: ISO C 9x
2058 roundf NEW: ISO C 9x
2059 roundl NEW: ISO C 9x
2061 scalbln NEW: ISO C 9x
2062 scalblnf NEW: ISO C 9x
2063 scalblnl NEW: ISO C 9x
2065 sendfile NEW: kernel
2066 setcontext NEW: Unix98
2067 setrlimit64 NEW: LFS
2068 setutxent NEW: Unix98
2070 sigignore NEW: Unix98
2071 sigqueue NEW: POSIX.1b
2072 sigrelse NEW: Unix98
2073 sigset NEW: POSIX.1b
2074 sigtimedwait NEW: POSIX.1b
2075 sigwaitinfo NEW: POSIX.1b
2076 sincos NEW: GNU ext.
2077 sincosf NEW: GNU ext.
2078 sincosl NEW: GNU ext.
2082 strcasestr NEW: GNU ext.
2083 strtoimax NEW: ISO C 9x
2084 strtoumax NEW: ISO C 9x
2085 strverscmp NEW: GNU ext.
2086 svcauthdes_stats NEW: Secure RPC
2087 svcunix_create NEW: sunrpc etx
2088 svcunixfd_create NEW: sunrpc ext
2089 swapcontext NEW: Unix98
2090 tcgetsid NEW: Unix98 PTY
2091 tdestroy NEW: GNU ext.
2092 tgamma NEW: ISO C 9x
2093 tgammaf NEW: ISO C 9x
2094 tgammal NEW: ISO C 9x
2098 truncf NEW: ISO C 9x
2099 truncl NEW: ISO C 9x
2101 unlockpt NEW: Unix98 PTY
2102 updwtmpx NEW: Unix98
2103 user2netname NEW: Secure RPC
2104 utmpxname NEW: Unix98
2105 versionsort NEW: GNU ext.
2106 versionsort64 NEW: GNU ext.
2108 wcscasecmp NEW: GNU ext.
2109 wcsncasecmp NEW: GNU ext.
2110 wcsnlen NEW: GNU ext.
2111 wcstoimax NEW: ISO C 9x
2112 wcstoll NEW: ISO C 9x
2113 wcstoull NEW: ISO C 9x
2114 wcstoumax NEW: ISO C 9x
2116 wordexp NEW: POSIX.2
2117 wordfree NEW: POSIX.2
2118 write_profiling REMOVED
2119 xdecrypt NEW: Secure RPC
2120 xdr_authdes_cred NEW: Secure RPC
2121 xdr_authdes_verf NEW: Secure RPC
2122 xdr_cryptkeyarg NEW: Secure RPC
2123 xdr_cryptkeyarg2 NEW: Secure RPC
2124 xdr_cryptkeyres NEW: Secure RPC
2125 xdr_getcredres NEW: Secure RPC
2126 xdr_key_netstarg NEW: Secure RPC
2127 xdr_key_netstres NEW: Secure RPC
2128 xdr_keybuf NEW: Secure RPC
2129 xdr_keystatus NEW: Secure RPC
2130 xdr_netnamestr NEW: Secure RPC
2131 xdr_sizeof NEW: Secure RPC
2132 xdr_unixcred NEW: sunrpc ext
2133 xencrypt NEW: Secure RPC
2134 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2145 * inet_ntoa is thread-safe
2147 * updwtmp is moved from libutil to libc
2149 * rewrite of cbrt function
2151 * update of timezone data
2165 * add atoll function
2167 * fix complex problems in Berkeley DB code
2169 * fix math functions
2173 * fixed lots of header problems (especially Linux/GNU specific)
2175 * dynamic loader preserves all registers
2177 * Roland McGrath provided support for handling of auxiliary objects in
2178 the ELF dynamic loader.
2180 * support for parallel builds is improved
2184 * GNU extensions are no longer declared by default. To enable them you
2185 must define the macro `_GNU_SOURCE' in your program or compile with
2188 * The library has changed from using GNU ld symbol aliases to using weak
2189 symbols where available. The ELF object file format supports weak
2190 symbols; GNU ld also supports weak symbols in the a.out format. (There
2191 is also now support for other GNU ld extensions in ELF. Use the
2192 `--with-elf' option to configure to indicate you have ELF, and
2193 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2194 of many files which contained only symbol aliases, reducing the size of
2195 the source and the compiled library; many other files were renamed to
2196 less cryptic names previously occupied by the symbol alias files.
2197 There is a new header file <elf.h> for programs which operate on
2198 files in the ELF format.
2200 * Converted to Autoconf version 2, so `configure' has more options.
2201 Run `configure --help' to see the details.
2203 * The library can now be configured to build profiling, highly-optimized
2204 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2205 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2206 `configure' enable building these extra libraries. The shared library is
2207 built by default when using both ELF and GNU ld. When shared libraries
2208 are enabled, the new library `-ldl' is available for arbitrary run-time
2209 loading of shared objects; its interface is defined in <dlfcn.h>. The
2210 new header file <link.h> gives access to the internals of the run-time
2211 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2212 application of same name on other systems and it provides information
2213 about dynamically linked binaries.
2215 * The C library now provides the run-time support code for profiling
2216 executables compiled with `-pg'. Programs can control the profiling code
2217 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2218 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2219 the support for this file format was contributed by David Mosberger-Tang.
2221 * The math code has been replaced with a math library based on fdlibm from
2222 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2223 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2224 functions. The math functions now reside in a separate library, so
2225 programs using them will need to use `-lm' their linking commands.
2227 * John C. Bowman contributed optimized ix87 assembler inline functions.
2229 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2230 mechanism similar to that found in Solaris 2. This is now used for the
2231 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2232 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2233 file controls what services are used for each individual database. This
2234 works by loading shared libraries with names specified in `nsswitch.conf',
2235 so service modules can be changed or added at any time without even
2236 relinking any program. Currently there are the file, db, and NIS based
2237 NSS services available.
2239 * The new functions `strtoq' and `strtouq' parse integer values from
2240 strings, like `strtol' and `strtoul', but they return `long long int' and
2241 `unsigned long long int' values, respectively (64-bit quantities).
2243 * The new functions `strtof' and `strtold' parse floating-point values from
2244 strings, like `strtod', but they return `float' and `long double' values,
2245 respectively (on some machines `double' and `long double' are the same).
2247 * Ulrich Drepper has contributed new implementations of the floating-point
2248 printing and reading code used in the `printf' family of functions and
2249 `strtod', `strtof', and `strtold'. These new functions are perfectly
2250 accurate, and much faster than the old ones.
2252 * The implementation of the POSIX locale model was completely rewritten by
2253 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2254 to compile the POSIX locale definition.
2256 * The former dummy implementations of the strcoll and strxfrm function are
2257 now replaced by fully functional code contributed by Ulrich Drepper. The
2258 collation information comes from the POSIX locale definitions.
2260 * The new header <langinfo.h> defines an interface for accessing
2261 various locale-dependent data (using the locale chosen with `setlocale').
2263 * Ulrich Drepper has contributed a new suite of functions for operation on
2264 wide-character and multibyte-character strings, in <wchar.h>;
2265 and classification and case conversion of wide characters, in <wctype.h>.
2266 These new functions are conforming to the ISO C, Amendement 1 specification.
2268 * There is now a second implementation of the standard I/O library available.
2269 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2270 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2272 * You can now use positional parameter specifications in format strings
2273 for the `printf' and `scanf' families of functions. For example,
2274 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2275 ``Number 6, Mr Jones''. This is mainly useful when providing different
2276 format strings for different languages, whose grammars may dictate
2277 different orderings of the values being printed. To support this
2278 feature, the interface for `register_printf_handler' has changed; see
2279 the header file <printf.h> for details.
2281 * The `printf' and `scanf' families of functions now understand a new
2282 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2283 to group numbers as indicated by the locale; for `scanf' and friends, this
2284 says to accept as valid only a number with all the proper grouping
2285 separators in the right places. In the default "C" locale, numbers are
2286 not grouped; but locales for specific countries will define the usual
2287 conventions (i.e. separate thousands with `,' in the US locale).
2289 * The pgrp functions have been regularized, slightly incompatibly but much
2290 less confusingly. The core functions are now `getpgid' and `setpgid',
2291 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2292 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2293 provided for compatibility. There is no longer an incompatible `getpgrp'
2294 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2296 * The new header file <fts.h> and suite of functions simplify programs that
2297 operate on directory trees. This code comes from 4.4 BSD.
2299 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2300 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2301 NSS scheme used in glibc.
2303 * There is a new malloc debugging hook `__memalign_hook'.
2305 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2306 `unsigned int' in <sys/types.h>. These are for compatibility only and
2307 their use is discouraged.
2309 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2310 done differently, so that it works even without GNU ld.
2312 * New function `euidaccess' checks allowed access to a file like `access',
2313 but using the effective IDs instead of the real IDs.
2315 * The time zone data files have been updated for the latest and greatest
2316 local time conventions of the countries of the world.
2318 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2321 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2322 for formatting floating-point numbers. They are provided only for
2323 compatibility; new programs should use `sprintf' instead. There are
2324 also equivalent function for the `long double' floating-point type and
2325 all functions also exist in a reentrant form.
2327 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2328 functions for maintaining the login-record files (primarily of use to
2329 system programs such as `login'), and convenient functions for
2330 allocating and initializing a pseudo-terminal (pty) device.
2332 * Ulrich Drepper has contributed new support for System V style
2333 shared memory and IPC on systems that support it.
2335 * Ulrich Drepper has contributed several miscellaneous new functions found
2336 in System V: The `hsearch' family of functions provide an effective
2337 implementation of hash tables; `a64l' and `l64a' provide a very simple
2338 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2341 * Ulrich Drepper has contributed new reentrant counterparts for the
2342 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2344 * Ulrich Drepper has contributed new, highly-optimized versions of several
2345 string functions for the i486/Pentium family of processors.
2347 * Ulrich Drepper has updated the Linux-specific code, based largely
2348 on work done in Hongjiu Lu's version of GNU libc for Linux.
2349 The GNU library now supports Linux versions 2.0.10 and later,
2350 using the ELF object file format (i[3456]86-*-linux).
2352 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2354 * David Mosberger-Tang and Richard Henderson have ported the C library
2355 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2356 dynamic linking support for ELF/Alpha.
2358 * Richard Henderson contributed several Alpha optimized assembler function
2359 for arithmetic and string handling.
2361 * Ulrich Drepper has contributed a new set of message catalog functions to
2362 support multiple languages using the <libintl.h> interface, for use with
2363 his new package GNU gettext. Translation volunteers have contributed
2364 catalogs of the library's messages in Spanish, German, and Korean.
2366 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2367 program and the `catgets' function for reading the catalog files it
2368 creates. (The <libintl.h> interface is preferred; we include the
2369 <nl_types.h> interface using `catgets' only for source compatibility with
2370 programs already written to use it.)
2372 * New header file <values.h> gives SVID-compatible names for <limits.h>
2375 * Various new macros, declarations, and small header files for compatibility
2378 * New function `group_member' is a convenient way to check if a process has
2379 a given effective group ID.
2381 * When using GCC 2.7 and later, the socket functions are now declared in a
2382 special way so that passing an argument of type `struct sockaddr_in *',
2383 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2384 `struct sockaddr *' type, does not generate a type-clash warning.
2386 * New function `error' declared in header file <error.h> is a convenient
2387 function for printing error messages and optionally exiting; this is the
2388 canonical function used in GNU programs. The new functions `err', `warn',
2389 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2390 doing the same thing.
2392 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2393 POSIX.2 `glob' function to do ~ and {...} expansion.
2395 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2396 `clearenv' which is used in POSIX.9 is also available.
2398 * New function `getsid' returns session ID number on systems that support it.
2400 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2401 files <db.h> and <mpool.h> provide a rich set of functions for several
2402 types of simple databases stored in memory and in files, and <ndbm.h> is
2403 an old `ndbm'-compatible interface using the `db' functions. Link with
2404 `-ldb' to get these functions.
2406 * New macro `strdupa' copies a string like `strdup', but uses local stack
2407 space from `alloca' instead of dynamic heap space from `malloc'.
2409 * New function `strnlen' is like `strlen' but searches only a given maximum
2410 number of characters for the null terminator. `stpncpy', `strndup' and
2411 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2414 * New function `statfs' in header <sys/statfs.h>.
2416 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2417 provide convenient functions for operating on blocks of null-terminated
2420 * A new suite of functions in <utmp.h> handle all the details of reading
2421 and writing the utmp file.
2423 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2426 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2427 completely POSIX compliant and also implemented the extended functionality
2428 to handle alternate digit representation and alternate era date formats.
2430 * Ulrich Drepper provided an implementation of the `strptime' function
2431 defined in XPG4.2 which transforms a string into a `struct tm' value.
2433 * Paul Eggert provided the tzselect shell script as part of the timezone
2434 code. The shell script makes it easy to select the correct timezone
2437 * The implementation of the malloc family of functions is completely replaced
2438 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2439 The implementation uses the mmap function (if available) and it is
2440 optimized for the use in multi threaded programs.
2442 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2443 functions. This new functionality is usable by specifying a special
2444 salt string and it is compatible with implementation on *BSD systems.
2446 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2447 `getsubopt' to handle second level command line options, `bsd_signal'
2448 to access BSD style `signal' functionality, the obsolete `regexp' style
2451 * the `lchown' function is available on system which support this
2454 * The implementation of the shadow password handling function was contributed
2457 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2459 * POSIX.1g support was added. The <sys/select.h> header is available,
2460 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2461 implementation of `getaddrinfo'.
2465 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2467 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2468 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2470 * The new function `daemon' from 4.4 BSD is useful for server programs that
2471 want to put themselves in the background.
2473 * Joel Sherrill has contributed support for several standalone boards that
2474 run without an operating system.
2476 * `printf', `scanf' and friends now accept a `q' type modifier for long
2477 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2479 * All of the code taken from BSD (notably most of the math and networking
2480 routines) has been updated from the BSD 4.4-Lite release.
2482 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2484 * The new functions `getdomainname' and `setdomainname' fetch or change the
2485 YP/NIS domain name. These are system calls which exist on systems which
2488 * The time zone data files have been updated for the latest international
2491 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2492 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2496 * The C library now includes support for Sun RPC, from Sun's free
2497 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2498 are included. (There is still no support for YP.)
2500 * Tom Quinn has contributed a port of the C library to SGI machines running
2501 Irix 4 (mips-sgi-irix4).
2503 * The new `lockf' function is a simplified interface to the locking
2504 facilities of `fcntl', included for compatibility.
2506 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2508 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2510 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2513 * The error message printed by `assert' for a failed assertion now includes
2514 the name of the program (if using GNU ld) and the name of the calling
2515 function (with versions of GCC that support this).
2517 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2519 * The library now includes the <sys/mman.h> header file and memory
2520 management functions `mmap', `munmap', `mprotect', `msync', and
2521 `madvise', on systems that support those facilities.
2523 * The interface for `mcheck' has changed slightly: the function called to
2524 abort the program when an allocation inconsistency is detected now takes
2525 an argument that indicates the type of failure. The new function
2526 `mprobe' lets you request a consistency check for a particular block at
2527 any time (checks are normally done only when you call `free' or `realloc'
2530 * It is now possible to easily cross-compile the C library, building on one
2531 system a library to run on another machine and/or operating system. All
2532 you need to do is set the variable `HOST_CC' in `configparms' to the
2533 native compiler for programs to run on the machine you are building on (a
2534 few generator programs are used on Unix systems); set `CC' to the
2537 * The new function `fexecve' (only implemented on the GNU system) executes
2538 a program file given a file descriptor already open on the file.
2542 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2543 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2545 * You can set the variable `libprefix' in `configparms' to specify a prefix
2546 to be prepended to installed library files; this makes it easy to install
2547 the GNU C library to be linked as `-lgnuc' or whatever.
2549 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2550 copies a limited number of characters from a string, and returns the
2551 address of the last character written.
2553 * You no longer need to check for whether the installed `stddef.h' is
2554 compatible with the GNU C library. configure now checks for you.
2556 * You can now define a per-stream `fileno' function to convert the
2557 stream's cookie into an integral file descriptor.
2559 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2560 allocates zero bytes of storage, and returns a unique pointer which
2561 you can pass to `realloc' or `free'. The behavior is undefined if
2562 you dereference this pointer.
2564 * The C library now runs on Sony NEWS m68k machines running either
2565 NewsOS 3 or NewsOS 4.
2567 * The new `syscall' function is a system-dependent primitive function
2568 for invoking system calls. It has the canonical behavior on Unix
2569 systems, including unreliable return values for some calls (such as
2570 `pipe', `fork' and `getppid').
2572 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2573 to `EAGAIN', which is the preferred name. On systems whose kernels
2574 use two distinct codes, the C library now translates EWOULDBLOCK to
2575 EAGAIN in every system call function.
2579 * The GNU C Library Reference Manual is now distributed with the library.
2580 `make dvi' will produce a DVI file of the printed manual.
2581 `make info' will produce Info files that you can read on line using C-h i
2582 in Emacs or the `info' program.
2583 Please send comments on the manual to bug-glibc-manual@gnu.org.
2585 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2587 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2589 * Jason Merrill has contributed a port to the Sequent Symmetry running
2590 Dynix version 3 (i386-sequent-dynix).
2592 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2593 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2595 * New function `memory_warnings' lets you arrange to get warnings when
2596 malloc is running out of memory to allocate, like Emacs gives you.
2598 * The C library now contains the relocating allocator used in Emacs 19 for
2599 its editing buffers. This allocator (ralloc) minimizes allocation
2600 overhead and fragmentation by moving allocated regions around whenever it
2601 needs to. You always refer to a ralloc'd region with a "handle" (a
2602 pointer to a pointer--an object of type `void **').
2604 * There is a new `printf' format: `%m' gives you the string corresponding
2605 to the error code in `errno'.
2607 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2608 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2609 pass, the `a' modifier says to fill in a `char **' you pass with a
2612 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2613 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2614 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2616 * `mkstemp' is a traditional Unix function to atomically create and open a
2617 uniquely-named temporary file.
2621 * The standard location for the file that says what the local timezone is
2622 has changed again. It is now `/usr/local/etc/localtime' (or more
2623 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2625 * The distribution no longer contains any files with names longer than 14
2628 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2629 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2631 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2635 * The configuration process has changed quite a bit. The `configure'
2636 script is now used just like the configuration scripts for other GNU
2637 packages. The `sysdeps' directory hierarchy is much rearranged.
2638 The file `INSTALL' explains the new scheme in detail.
2640 * The header files no longer need to be processed into ANSI C and
2641 traditional C versions. There is just one set of files to install, and
2642 it will work with ANSI or old C compilers (including `gcc -traditional').
2644 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2645 MIPS DECStation running Ultrix 4.
2647 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2648 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2649 made itself into a shared library.
2651 * Yet further improved support for the i386, running 4.3 BSD-like systems
2652 (such as Mach 3 with the Unix single-server), or System V.
2654 * New function `strncasecmp' to do case-insensitive string comparison
2655 with limited length.
2657 * New function `strsep' is a reentrant alternative to `strtok'.
2659 * New functions `scandir' and `alphasort' for searching directories.
2661 * New function `setenv' is a better interface to `putenv'.
2663 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2664 function for traversing a directory tree.
2666 * The GNU obstack package is now also part of the C library.
2667 The new function `open_obstack_stream' creates a stdio stream that
2668 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2669 formatted output directly to an obstack.
2671 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2672 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2674 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2676 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2677 things to your strings.
2679 * There are some new test programs: test-fseek, testmb, and testrand.
2681 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2682 These ports are not finished, but are a good starting place for really
2683 supporting those systems.
2685 * `/etc/localtime' is now the standard location for the file that says what
2686 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2687 This follows the general principle that `/etc' is the place for all local
2688 configuration files.
2690 * The C library header files now use `extern "C"' when used by the C++
2691 compiler, so the C library should now work with C++ code.
2693 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2694 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2697 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2698 function which uses the `merge sort' algorithm, and is said to be
2699 significantly faster than the old GNU `qsort' function. Merge sort is
2700 now the standard `qsort' function. The new algorithm can require a lot
2701 of temporary storage; so, the old sorting function is called when the
2702 required storage is not available.
2704 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2705 provides the Unix `crypt' function, plus some other entry points.
2707 * The code and header files taken from 4.4 BSD have been updated with the
2708 latest files released from Berkeley.
2710 ----------------------------------------------------------------------
2711 Copyright information:
2713 Copyright (C) 1992-2015 Free Software Foundation, Inc.
2715 Permission is granted to anyone to make or distribute verbatim copies
2716 of this document as received, in any medium, provided that the
2717 copyright notice and this permission notice are preserved,
2718 thus giving the recipient permission to redistribute in turn.
2720 Permission is granted to distribute modified versions
2721 of this document, or of portions of it,
2722 under the above conditions, provided also that they
2723 carry prominent notices stating who last changed them.
2726 version-control: never