NEWS

   1 GNU C Library NEWS -- history of user-visible changes.
   2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
   3 See the end for copying conditions.
   4
   5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
   6 using `glibc' in the "product" field.
   7 \f
   8 Version 2.21
   9
  10 * The following bugs are resolved with this release:
  11
  12   6652, 10672, 12847, 12926, 13862, 14132, 14138, 14171, 14498, 15215,
  13   15884, 16469, 16617, 16619, 16657, 16740, 16857, 17192, 17266, 17344,
  14   17363, 17370, 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508,
  15   17522, 17555, 17570, 17571, 17572, 17573, 17574, 17581, 17582, 17583,
  16   17584, 17585, 17589, 17594, 17601, 17608, 17616, 17625, 17630, 17633,
  17   17634, 17647, 17653, 17657, 17664, 17665, 17668, 17682, 17717, 17719,
  18   17722, 17724, 17725, 17733, 17744, 17745, 17746, 17747.
  19
  20 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
  21   under certain input conditions resulting in the execution of a shell for
  22   command substitution when the applicaiton did not request it. The
  23   implementation now checks WRDE_NOCMD immediately before executing the
  24   shell and returns the error WRDE_CMDSUB as expected.
  25
  26 * CVE-2012-3406 printf-style functions could run into a stack overflow when
  27   processing format strings with a large number of format specifiers.
  28
  29 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
  30   infinite loop if the DNS response contained a PTR record of an unexpected
  31   format.
  32
  33 * The minimum GCC version that can be used to build this version of the GNU
  34   C Library is GCC 4.6.  Older GCC versions, and non-GNU compilers, can
  35   still be used to compile programs using the GNU C Library.
  36
  37 * The GNU C Library is now built with -Werror by default.  This can be
  38   disabled by configuring with --disable-werror.
  39
  40 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
  41
  42 * The obsolete sigvec function has been removed.  This was the original
  43   4.2BSD interface that inspired the POSIX.1 sigaction interface, which
  44   programs have been using instead for about 25 years.  Of course, ABI
  45   compatibility for old binaries using sigvec remains intact.
  46
  47 * Merged gettext 0.19.3 into the intl subdirectory.  This fixes building
  48   with newer versions of bison.
  49 \f
  50 Version 2.20
  51
  52 * The following bugs are resolved with this release:
  53
  54   6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
  55   15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
  56   16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
  57   16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
  58   16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
  59   16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
  60   16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
  61   16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
  62   16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
  63   16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
  64   16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
  65   16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
  66   17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
  67   17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
  68   17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
  69
  70 * Optimized strchrnul implementation for AArch64.  Contributed by ARM Ltd.
  71
  72 * Reverted change of ABI data structures for s390 and s390x:
  73   On s390 and s390x the size of struct ucontext and jmp_buf was increased in
  74   2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
  75   of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
  76   are preserved pointing straight to the same implementation as the old ones.
  77   Given that, new callers will simply provide a too-big buffer to these
  78   functions. Any applications/libraries out there that embed jmp_buf or
  79   ucontext_t in an ABI-relevant data structure that have already been rebuilt
  80   against 2.19 headers will have to rebuilt again. This is necessary in any
  81   case to revert the breakage in their ABI caused by the glibc change.
  82
  83 * Support for file description locks is added to systems running the
  84   Linux kernel. The standard file locking interfaces are extended to
  85   operate on file descriptions, not file descriptors, via the use of
  86   F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
  87   are associated with an open file instead of a process.
  88
  89 * Optimized strchr implementation for AArch64.  Contributed by ARM Ltd.
  90
  91 * The minimum Linux kernel version that this version of the GNU C Library
  92   can be used with is 2.6.32.
  93
  94 * Running the testsuite no longer terminates as soon as a test fails.
  95   Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
  96   with PASS or FAIL lines for individual tests.  A summary of the results is
  97   printed, including a list of failing lists, and "make check" exits with
  98   error status if there were any unexpected failures.  "make check
  99   stop-on-test-failure=y" may be used to keep the old behavior.
 100
 101 * The am33 port, which had not worked for several years, has been removed
 102   from ports.
 103
 104 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
 105   supported; they now act the same as _DEFAULT_SOURCE (but generate a
 106   warning).  Except for cases where _BSD_SOURCE enabled BSD interfaces that
 107   conflicted with POSIX (support for which was removed in 2.19), the
 108   interfaces those macros enabled remain available when compiling with
 109   _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
 110   test macros defined.
 111
 112 * Optimized strcmp implementation for ARMv7.  Contributed by ARM Ltd.
 113
 114 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
 115   This may improve lock scaling of existing programs on TX capable systems.
 116   The lock elision code is only built with --enable-lock-elision=yes and
 117   then requires a GCC version supporting the TX builtins.  With lock elision
 118   default mutexes are elided via __builtin_tbegin, if the cpu supports
 119   transactions. By default lock elision is not enabled and the elision code
 120   is not built.
 121
 122 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
 123   copy the path argument.  This allowed programs to cause posix_spawn to
 124   deference a dangling pointer, or use an unexpected pathname argument if
 125   the string was modified after the posix_spawn_file_actions_addopen
 126   invocation.
 127
 128 * All supported architectures now use the main glibc sysdeps directory
 129   instead of some being in a separate "ports" directory (which was
 130   distributed separately before glibc 2.17).
 131
 132 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
 133   On configurations that support it (all Linux configurations), it's now
 134   used regardless of the --enable-add-ons switch to configure.  It is no
 135   longer possible to build such configurations without pthreads support.
 136
 137 * Locale names, including those obtained from environment variables (LANG
 138   and the LC_* variables), are more tightly checked for proper syntax.
 139   setlocale will now fail (with EINVAL) for locale names that are overly
 140   long, contain slashes without starting with a slash, or contain ".." path
 141   components. (CVE-2014-0475)  Previously, some valid locale names were
 142   silently replaced with the "C" locale when running in AT_SECURE mode
 143   (e.g., in a SUID program).  This is no longer necessary because of the
 144   additional checks.
 145
 146 * On x86-64, the dynamic linker's lazy-binding support is now compatible
 147   with application code using Intel MPX instructions.  (With all previous
 148   versions, the MPX register state could be clobbered when making calls
 149   into or out of a shared library.)  Note that while the new dynamic
 150   linker is compatible with all known x86 hardware whether or not it
 151   supports Intel MPX, some x86 instruction-set emulators might fail to
 152   handle the new instruction encodings.  This is known to affect Valgrind
 153   versions up through 3.9 (but will be fixed in the forthcoming 3.10
 154   release), and might affect other tools that do instruction emulation.
 155
 156 * Support for loadable gconv transliteration modules has been removed.
 157   The support for transliteration modules has been non-functional for
 158   over a decade, and the removal is prompted by security defects.  The
 159   normal gconv conversion modules are still supported.  Transliteration
 160   with //TRANSLIT is still possible, and the //IGNORE specifier
 161   continues to be  supported. (CVE-2014-5119)
 162
 163 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
 164   IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
 165   resulting a denial-of-service security vulnerability in applications which
 166   use functions related to iconv. (CVE-2014-6040)
 167 \f
 168 Version 2.19
 169
 170 * The following bugs are resolved with this release:
 171
 172   156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
 173   7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
 174   12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
 175   14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
 176   15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
 177   15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
 178   15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
 179   15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
 180   15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
 181   15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
 182   15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
 183   15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
 184   16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
 185   16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
 186   16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
 187   16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
 188   16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
 189   16431, 16453, 16474, 16506, 16510, 16529
 190
 191 * Slovenian translations for glibc messages have been contributed by the
 192   Translation Project's Slovenian team of translators.
 193
 194 * The public headers no longer use __unused nor __block.  This change is to
 195   support compiling programs that are derived from BSD sources and use
 196   __unused internally, and to support compiling with Clang's -fblock
 197   extension which uses __block.
 198
 199 * CVE-2012-4412 The strcoll implementation caches indices and rules for
 200   large collation sequences to optimize multiple passes.  This cache
 201   computation may overflow for large collation sequences and may cause a
 202   stack or buffer overflow.  This is now fixed to use a slower algorithm
 203   which does not use a cache if there is an integer overflow.
 204
 205 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
 206   rules for large collation sequences to optimize multiple passes and falls
 207   back to alloca if malloc fails, resulting in a possible stack overflow.
 208   The implementation now falls back to an uncached collation sequence lookup
 209   if malloc fails.
 210
 211 * CVE-2013-4788 The pointer guard used for pointer mangling was not
 212   initialized for static applications resulting in the security feature
 213   being disabled. The pointer guard is now correctly initialized to a
 214   random value for static applications. Existing static applications need
 215   to be recompiled to take advantage of the fix (bug 15754).
 216
 217 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
 218   to the d_name member of struct dirent, or omit the terminating NUL
 219   character.  (Bugzilla #14699).
 220
 221 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
 222   aligned_alloc functions could allocate too few bytes or corrupt the
 223   heap when passed very large allocation size values (Bugzilla #15855,
 224   #15856, #15857).
 225
 226 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
 227   for AF_INET6 has been fixed (Bugzilla #16072).
 228
 229 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
 230   pap_CW, quz_PE, the_NP.
 231
 232 * Substantially revised locales: gd_GB, ht_HT
 233
 234 * The LC_ADDRESS field was updated to support country_car for almost all
 235   supported locales.
 236
 237 * ISO 1427 definitions were updated.
 238
 239 * ISO 3166 definitions were updated.
 240
 241 * The localedef utility now supports --big-endian and --little-endian
 242   command-line options to generate locales for a different system from that
 243   for which the C library was built.
 244
 245 * Binary locale files now only depend on the endianness of the system for
 246   which they are generated and not on other properties of that system.  As a
 247   consequence, binary files generated with new localedef may be incompatible
 248   with old versions of the GNU C Library, and binary files generated with
 249   old localedef may be incompatible with this version of the GNU C Library,
 250   in the following circumstances:
 251
 252   + Locale files may be incompatible on m68k systems.
 253
 254   + Locale archive files (but not separate files for individual locales) may
 255     be incompatible on systems where plain "char" is signed.
 256
 257 * The configure option --disable-versioning has been removed.  Builds with
 258   --disable-versioning had not worked for several years.
 259
 260 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
 261   cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
 262
 263 * SystemTap probes for malloc have been introduced.
 264
 265 * SystemTap probes for slow multiple precision fallback paths of
 266   transcendental functions have been introduced.
 267
 268 * Support for powerpc64le has been added.
 269
 270 * The soft-float powerpc port now supports e500 processors.
 271
 272 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
 273
 274 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
 275   set of header declarations that are enabled by default, even when other
 276   feature test macros or compiler options such as -std=c99 would otherwise
 277   disable some of those declarations.
 278
 279 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
 280   conflict with POSIX.  The libbsd-compat library (which was a dummy library
 281   that did nothing) has also been removed.
 282
 283 * Preliminary documentation about Multi-Thread, Async-Signal and
 284   Async-Cancel Safety has been added.
 285
 286 * Change of ABI data structures for s390 and s390x:
 287   On s390 and s390x the size of struct ucontext and jmp_buf was increased to
 288   allow for future hardware extensions. All library functions that accept or
 289   return these structures were versioned in order to provide backwards
 290   compatibility with existing code. However, not all cases can be handled
 291   with interface versioning. If an application embeds either structure into
 292   another structure and that structure is passed to another compilation unit
 293   which expects the newer larger-sized object then any access to the new
 294   fields will result in undefined behaviour. Similarly any access to fields
 295   that were moved by the enlarging of the structures will cause undefined
 296   behaviour. To fix the undefined behaviour all objects that are part of the
 297   final in-memory image must agree on the size of structures, and this may
 298   require recompilation.
 299 \f
 300 Version 2.18
 301
 302 * The following bugs are resolved with this release:
 303
 304   2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
 305   11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
 306   14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
 307   14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
 308   14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
 309   15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
 310   15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
 311   15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
 312   15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
 313   15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
 314   15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
 315   15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
 316   15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
 317   15759.
 318
 319 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
 320   has been fixed by disabling the use of pt_chown (Bugzilla #15755).
 321   Distributions can re-enable building and using pt_chown via the new configure
 322   option `--enable-pt_chown'.  Enabling the use of pt_chown carries with it
 323   considerable security risks and should only be used if the distribution
 324   understands and accepts the risks.
 325
 326 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
 327   #15078).
 328
 329 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
 330   fixed (Bugzilla #15330).
 331
 332 * Add support for calling C++11 thread_local object destructors on thread
 333   and program exit.  This needs compiler support for offloading C++11
 334   destructor calls to glibc.
 335
 336 * Improved worst case performance of libm functions with double inputs and
 337   output.
 338
 339 * Support for priority inherited mutexes in pthread condition variables on
 340   non-x86 architectures.
 341
 342 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
 343
 344 * Optimized string functions for AArch64.  Implemented by Marcus Shawcroft.
 345
 346 * Optimized string functions for ARM.  Implemented by Will Newton and
 347   Richard Henderson.
 348
 349 * Optimized libm functions for SPARC.  Implemented by David S. Miller.
 350
 351 * Support for building more of ARM glibc as Thumb-2 code.  Implemented by
 352   Richard Henderson.
 353
 354 * Support for building most of MIPS glibc as MIPS16 code.  Implemented by
 355   Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
 356
 357 * Added a benchmark framework to track performance of functions in glibc.
 358
 359 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
 360   It is based on draft TS 18661 and currently enabled as a GNU extension.
 361
 362 * On Linux, the clock function now uses the clock_gettime system call
 363   for improved precision, rather than old times system call.
 364
 365 * Added support for version-3 tz format files.  This is needed when using
 366   the tz database release 2013e or later, and affects a few unusual cases --
 367   currently only TZ='America/Godthab' for time stamps after 2037.
 368
 369 * Added new API functions pthread_getattr_default_np and
 370   pthread_setattr_default_np to get and set the default pthread
 371   attributes of a process.
 372
 373 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
 374   This may improve lock scaling of existing programs on TSX capable systems.
 375   When the --enable-lock-elision=yes parameter is specified at configure
 376   time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
 377   mutexes.
 378
 379 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
 380   availability).  Implemented by Ryan S. Arnold.
 381
 382 * Support added for POWER8 platform.  Implemented by Ryan S. Arnold.
 383 \f
 384 Version 2.17
 385
 386 * The following bugs are resolved with this release:
 387
 388   1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
 389   9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
 390   11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
 391   13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
 392   13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
 393   14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
 394   14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
 395   14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
 396   14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
 397   14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
 398   14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
 399   14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
 400   14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
 401   14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
 402   14879, 14889, 14893, 14898, 14914.
 403
 404 * Optimization of memcpy for MIPS.
 405
 406 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
 407   EMFILE has been fixed (Bugzilla #14889).
 408
 409 * The add-on ports collection is now distributed in the "ports" subdirectory
 410   of the main GNU C Library distribution, rather than separately.
 411
 412 * Port to ARM AArch64 contributed by Linaro.
 413
 414 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
 415   Optimized versions of memcpy, memset, and memcmp added for System z10 and
 416   zEnterprise z196.
 417   Implemented by Andreas Krebbel.
 418
 419 * The new function secure_getenv allows secure access to the environment,
 420   returning NULL if running in a SUID/SGID process.  This function replaces
 421   the internal function __secure_getenv.
 422
 423 * SystemTap static probes have been added into the dynamic linker.
 424   Implemented by Gary Benson.
 425
 426 * Optimizations of string functions strstr, strcasestr and memmem.
 427   Implemented by Maxim Kuvyrkov.
 428
 429 * The minimum Linux kernel version that this version of the GNU C Library
 430   can be used with is 2.6.16.
 431
 432 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
 433   powerpc POWER7.  Implemented by Will Schmidt.
 434
 435 * New configure option --disable-nscd builds the C library such that it
 436   never attempts to contact the Name Service Caching Daemon (nscd).
 437   New configure option --disable-build-nscd avoids building nscd itself;
 438   this is the default if --disable-nscd is used.
 439
 440 * Improved support for cross-compilation, including cross-testing and
 441   bootstrap builds without a previously built glibc.
 442
 443 * Several testsuite tests are now able to test multiple IFUNC variants of an
 444   interface, rather than just testing the one that would be chooen by
 445   default.
 446
 447 * New configure options --with-bugurl and --with-pkgversion, for
 448   distributors to use to embed their bug-reporting and package version
 449   information in --help and --version output.
 450
 451 * The ttyname and ttyname_r functions on Linux now fall back to searching for
 452   the tty file descriptor in /dev/pts or /dev if /proc is not available.  This
 453   allows creation of chroots without the procfs mounted on /proc.
 454
 455 * The `crypt' function now fails if passed salt bytes that violate the
 456   specification for those values.  On Linux, the `crypt' function will
 457   consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
 458   enabled, and fail on encrypted strings using the MD5 or DES algorithm
 459   when the mode is enabled.
 460
 461 * The `clock_*' suite of functions (declared in <time.h>) is now available
 462   directly in the main C library.  Previously it was necessary to link with
 463   -lrt to use these functions.  This change has the effect that a
 464   single-threaded program that uses a function such as `clock_gettime' (and
 465   is not linked with -lrt) will no longer implicitly load the pthreads
 466   library at runtime and so will not suffer the overheads associated with
 467   multi-thread support in other code such as the C++ runtime library.
 468
 469 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
 470   sat_IN, and szl_PL.
 471 \f
 472 Version 2.16
 473
 474 * The following bugs are resolved with this release:
 475
 476   174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
 477   2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
 478   3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
 479   4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
 480   6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
 481   10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
 482   11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
 483   12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
 484   13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
 485   13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
 486   13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
 487   13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
 488   13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
 489   13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
 490   13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
 491   13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
 492   13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
 493   13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
 494   13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
 495   14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
 496   14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
 497   14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
 498   14277, 14278.
 499
 500 * Support for the x32 ABI on x86-64 added.  The x32 target is selected by
 501   configuring glibc with:
 502         BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
 503   Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
 504   Implemented by H.J. Lu.
 505
 506 * ISO C11 support:
 507
 508   + define static_assert
 509
 510   + do not declare gets
 511
 512   + declare at_quick_exit and quick_exit also for ISO C11
 513
 514   + aligned_alloc.  NB: The code is deliberately allows the size parameter
 515     to not be a multiple of the alignment.  This is a moronic requirement
 516     in the standard but it is only a requirement on the caller, not the
 517     implementation.
 518
 519   + timespec_get added
 520
 521   + uchar.h support added
 522
 523   + CMPLX, CMPLXF, CMPLXL added
 524
 525   Implemented by Ulrich Drepper.
 526
 527 * Support for the IA-64 has been moved to ports.
 528
 529 * Remove support for anything but ELF binary format
 530
 531 * Checking versions of poll, ppoll added.
 532   Implemented by Ulrich Drepper.
 533
 534 * More generic and 64-bit performance optimizations to math functions.
 535   Implemented by Ulrich Drepper.
 536
 537 * New configure option --enable-obsolete-rpc makes the deprecated RPC
 538   headers and functions available at compile time as they were before
 539   version 2.14.  This option will be removed at some time in the future
 540   after the TI-RPC library becomes fully sufficient for the needs of
 541   existing applications.
 542
 543 * Compatibility code for Linux kernel versions before 2.4 has been removed.
 544   Note that glibc is not expected to work with any Linux kernel version
 545   before 2.6.
 546
 547 * New header <sys/auxv.h> and function getauxval allowing easy access to
 548   the AT_* key-value pairs passed from the Linux kernel.  The header also
 549   defines the HWCAP_* bits associated with the AT_HWCAP key.
 550
 551 * New locales: mag_IN
 552
 553 * New configure option --enable-systemtap builds SystemTap static probes
 554   into libc for setjmp and longjmp and into libpthread for various operations.
 555   So far the setjmp/longjmp probes and some of the libpthread probes are
 556   provided only for i*86 and x86_64.
 557   Implemented by Roland McGrath and Rayson Ho.
 558
 559 * Optimized expf for x86-32 and x86-64.  Implemented by Liubov Dmitrieva.
 560
 561 * More optimized functions for PowerPC.  Implemented by Adhemerval Zanella
 562   and Will Schmidt.
 563
 564 * More optimized functions for SPARC.  Implemented by David S. Miller.
 565
 566 * Improved support for cross-compilation, especially bootstrap builds
 567   without a previously built glibc.
 568
 569 * Ports for the TILE-Gx and TILEPro families of processors.  Contributed by
 570   Chris Metcalf from Tilera.
 571
 572 * Support for the old ARM ABI has been removed from ports.  Only the EABI is
 573   now supported for ARM processors.
 574
 575 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
 576   as the name of the dynamic linker, to distinguish it from the
 577   /lib/ld-linux.so.3 dynamic linker used for the base EABI.
 578
 579 * Support for CRIS has been removed from ports.
 580
 581 * A new class of installed header has been documented for low-level
 582   platform-specific functionality.  PowerPC added the first instance with a
 583   function to provide time base register access.  Contributed by Tulio
 584   Magno Quites Machado Filho.
 585
 586 * ix86 configurations now install header files that are consistent with
 587   what x86-64 configurations install.  These same header files can be used
 588   for -m32, -m64, or -mx32 builds.
 589   Contributed by H.J. Lu.
 590
 591 * Math library bug fixes.  A thorough audit of all open math library bugs was
 592   conducted by Joseph Myers.  Significant progress was made on many math
 593   library bugs resulting in more accurate exceptions and function results.
 594   Many thanks to all those that contributed including Andreas Jaeger for his
 595   patch review and work on the x87 trigonometric instruction issues.
 596
 597 * Timezone data is no longer installed.  Timezone-related binaries and scripts
 598   will continue to be installed.  Users should obtain their timezone data from
 599   their distribution provider or from the tzdata package at
 600   <ftp://munnari.oz.au/pub/>.
 601 \f
 602 Version 2.15
 603
 604 * The following bugs are resolved with this release:
 605
 606   6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
 607   12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
 608   13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
 609   13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
 610   13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
 611   13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
 612   13484, 13506, 13515, 13523, 13524, 13538, 13540
 613
 614 * New program pldd to list loaded object of a process
 615   Implemented by Ulrich Drepper.
 616
 617 * Add nss_db support back to glibc.  No more dependency on Berkeley db
 618   and support for initgroups lookups.
 619   Implemented by Ulrich Drepper.
 620
 621 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
 622   Contributed by HJ Lu.
 623
 624 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
 625   Contributed by HJ Lu.
 626
 627 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
 628   on x86-32 and x86-64.
 629   Contributed by Liubov Dmitrieva.
 630
 631 * Optimized strchr and strrchr for SSE on x86-32.
 632   Contributed by Liubov Dmitrieva.
 633
 634 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
 635   for x86-64 and x86-32.
 636   Contributed by Liubov Dmitrieva.
 637
 638 * New interfaces: scandirat, scandirat64
 639   Implemented by Ulrich Drepper.
 640
 641 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
 642   Implemented by Ulrich Drepper.
 643
 644 * nscd now also caches the netgroup database.
 645   Implemented by Ulrich Drepper.
 646
 647 * Integrate libm with gcc's -ffinite-math-only option.
 648   Implemented by Ulrich Drepper.
 649
 650 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
 651   to math functions.  Implemented by Ulrich Drepper.
 652
 653 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
 654   Implemented by Ulrich Drepper.
 655
 656 * New Linux interfaces: process_vm_readv, process_vm_writev
 657
 658 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
 659   Implemented by Ulrich Drepper.
 660
 661 * Optimized nearbyint and strcasecmp for PPC.
 662   Implemented by Adhemerval Zanella.
 663
 664 * New locales: bho_IN, unm_US, es_CU, ta_LK
 665 \f
 666 Version 2.14
 667
 668 * The following bugs are resolved with this release:
 669
 670   386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
 671   11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
 672   11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
 673   11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
 674   12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
 675   12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
 676   12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
 677   12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
 678   12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
 679   12795, 12811, 12813, 12814, 12841
 680
 681 * The RPC implementation in libc is obsoleted.  Old programs keep working
 682   but new programs cannot be linked with the routines in libc anymore.
 683   Programs in need of RPC functionality must be linked against TI-RPC.
 684   The TI-RPC implementation is IPv6 enabled and there are other benefits.
 685
 686   Visible changes of this change include (obviously) the inability to link
 687   programs using RPC functions without referencing the TI-RPC library and the
 688   removal of the RPC headers from the glibc headers.
 689   Implemented by Ulrich Drepper.
 690
 691 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
 692   syncfs, setns, sendmmsg
 693
 694 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
 695   yue_HK, lij_IT, mhr_RU
 696
 697 * New encodings: CP770, CP771, CP772, CP773, CP774
 698
 699 * New program sotruss to trace calls through PLTs
 700   Implemented by Ulrich Drepper.
 701
 702 * The malloc hook implementation is marked deprecated and will be removed
 703   from the default implementation in the next version.  The design never
 704   worked ever since the introduction of threads.  Even programs which do
 705   not create threads themselves can use multiple threads created internally.
 706 \f
 707 Version 2.13
 708
 709 * The following bugs are resolved with this release:
 710
 711   3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
 712   11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
 713   12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
 714   12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
 715   12378, 12394, 12397
 716
 717 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
 718
 719 * POWER7 optimizations: memset, memcmp, strncmp
 720
 721 * New optimized string functions for x86-64: strnlen (SSE2),
 722   strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
 723   Implemented by Ulrich Drepper.
 724 \f
 725 Version 2.12
 726
 727 * The following bugs are resolved with this release:
 728
 729   3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
 730   10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
 731   11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
 732   11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
 733   11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
 734   11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
 735   11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
 736   11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
 737
 738 * New interfaces: pthread_getname_np, pthread_setname_np
 739
 740 * New Linux interface: recvmmsg
 741
 742 * STT_GNU_IFUNC implemented for Sparc by David Miller.
 743
 744 * The dynamic linker now recognizes supported ABI versions from the
 745   EI_ABIVERSION field in the ELF header.
 746   Implemented by Ulrich Drepper.
 747
 748 * New NIS mode selector ADJUNCT_AS_SHADOW.  The passwd.adjunct.byname table
 749   will not be used to fill in password fields in the passwd.byname replies.
 750   Instead it is used to synthesize the shadow.byname table, should it be
 751   missing.  This is a useful mode in some installations involving Solaris.
 752   Implemented by Ulrich Drepper.
 753
 754 * New locales: kok_IN, sq_MK, cv_RU
 755 \f
 756 Version 2.11
 757
 758 * The following bugs are resolved with this release:
 759
 760   3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
 761   10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
 762   10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
 763   10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
 764   10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
 765   10789, 10817, 10823, 10840, 10847
 766
 767 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
 768   mkostemps64
 769   Implemented by Ulrich Drepper.
 770
 771 * Checking version of longjmp added that fails if an uninitialized stack
 772   frame would be created.  Implemented by Ulrich Drepper.
 773
 774 * STT_GNU_IFUNC is now supported in static executables.
 775   Implemented by H.J. Lu.
 776
 777 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
 778
 779 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
 780   strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
 781   strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
 782   Contributed by H.J. Lu.
 783
 784   strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
 785   Implemented by Ulrich Drepper.
 786
 787 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
 788   strstr, strcasestr.
 789   Contributed by H.J. Lu.
 790
 791 * Support for fma instruction in AVX on x86-64.
 792   Implemented by H.J. Lu and Ulrich Drepper.
 793
 794 * AVX support in x86-64 auditing support in ld.so.
 795   Implemented by H.J. Lu.
 796
 797 * STB_GNU_UNIQUE support added.
 798   Implemented by Ulrich Drepper.
 799
 800 * Implement second fallback mode for optimized DNS lookup for even more
 801   broken environments.  If two requests from the same port are not
 802   handled correctly close the socket and open a new one before sending
 803   the second request.  The 'single-request-reopen' option in /etc/resolv.conf
 804   can be used to select this mode right away, instead of rediscovering the
 805   necessity is every process again.
 806   Implemented by Ulrich Drepper.
 807
 808 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
 809   Implemented by Adam Tkac.
 810
 811 * Optimized iconv conversions for S390x.
 812   Implemented by Andreas Krebbel.
 813
 814 * Using condvars with PI mutexes is now more efficient due to kernel
 815   support for requeueing to PI futexes.  NPTL support added for x86-64.
 816   Implemented by Ulrich Drepper.
 817
 818 * New locales: ps_AF, my_MM
 819 \f
 820 Version 2.10
 821
 822 * The following bugs are resolved with this release:
 823
 824   697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
 825   9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
 826   9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
 827   9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
 828   10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
 829
 830 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
 831   Implemented by Ulrich Drepper.
 832
 833 * New Linux interfaces: accept4, fallocate, fallocate64.
 834   Implemented by Ulrich Drepper.
 835
 836 * Correct declarations of string function when used in C++ code.  This
 837   could lead to compile errors for invalid C++ code.
 838
 839 * XPG7/POSIX 2008 compilation environment.  Many GNU-specific functions are
 840   now in POSIX.
 841
 842 * New POSIX 2008 interface: psiginfo
 843   Implemented by Ulrich Drepper.
 844
 845 * New ISO C++1x interfaces: quick_exit, at_quick_exit
 846   Implemented by Ulrich Drepper.
 847
 848 * Support for selecting between multiple function definitions at runtime
 849   using STT_GNU_IFUNC symbols.  Implemented by Ulrich Drepper.
 850
 851 * The libcrypt library can now use the hash function implementations in
 852   NSS.  Implemented by Ulrich Drepper.
 853
 854 * The malloc implementation can be compiled to be less memory efficient
 855   but higher performing in multi-threaded programs.
 856   Implemented by Ulrich Drepper.
 857
 858 * New locales: nan_TW@latin, ks_IN
 859
 860 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
 861   Implemented by Ulrich Drepper.
 862
 863 * Extended printf hook support.  It is possible to use user-defined types
 864   and extend existing format specifiers.
 865   Implemented by Ulrich Drepper.
 866
 867 * Handling for group shadow files has been added.
 868   Implemented by Ulrich Drepper.
 869
 870 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
 871   servers (the case, e.g., for some people using the built-in DNS
 872   server in ADSL modems/routers).  There is a once-per-process timeout
 873   in case of a broken server.  To avoid it, users can run nscd or put
 874   'options single-request' in /etc/resolv.conf.
 875   Implemented by Ulrich Drepper.
 876 \f
 877 Version 2.9
 878
 879 * The following bugs are resolved with this release:
 880
 881   3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
 882   6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
 883   6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
 884   6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
 885   6968, 6974, 6980, 6995, 7008, 7009, 7029
 886
 887 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
 888   up at the same time.  Implemented by Ulrich Drepper.
 889
 890 * TLS descriptors for LD and GD on x86 and x86-64.
 891   Implemented by Alexandre Oliva.
 892
 893 * getaddrinfo now handles DCCP and UDPlite.
 894   Implemented by Ulrich Drepper.
 895
 896 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
 897   htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
 898   Implemented by Ulrich Drepper.
 899
 900 * New implementation of memmem, strstr, and strcasestr which is O(n).
 901   Implemented by Eric Blake.
 902
 903 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
 904
 905 * Implement "e" option for popen to open file descriptor with the
 906   close-on-exec flag set.  Implemented by Ulrich Drepper.
 907
 908 * Implement "b" mode for fmemopen.  In this mode writes writes don't
 909   implicitly add a NUL byte and seeks from the end of the buffer really
 910   use the buffer end, not the string length as the basis.
 911   Implemented by Ulrich Drepper.
 912
 913 * Many functions, exported and internal, now atomically set the close-on-exec
 914   flag when run on a sufficiently new kernel.  Implemented by Ulrich Drepper.
 915
 916 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
 917   Sinhala)
 918   Implemented by Pravin Satpute.
 919
 920 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
 921 \f
 922 Version 2.8
 923
 924 * The following bugs are resolved with this release:
 925
 926   2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
 927   5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
 928   5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
 929   5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
 930   5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
 931   5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
 932   5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
 933
 934 * New locales: bo_CN, bo_IN, shs_CA.
 935
 936 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
 937
 938 * Sorting rules for some Indian languages (Devanagari and Gujarati).
 939   Implemented by Pravin Satpute.
 940
 941 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
 942
 943 * nscd caches now all timeouts for DNS entries
 944   Implemented by Ulrich Drepper.
 945
 946 * nscd is more efficient and wakes up less often.
 947   Implemented by Ulrich Drepper.
 948
 949 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
 950   vdprintf, and obstack_vprintf.
 951   Implemented by Jakub Jelinek.
 952
 953 * Faster memset for x86-64.
 954   Implemented by Harsha Jagasia and H.J. Lu.
 955
 956 * Faster memcpy on x86.
 957   Implemented by Ulrich Drepper.
 958
 959 * ARG_MAX is not anymore constant on Linux.  Use sysconf(_SC_ARG_MAX).
 960   Implemented by Ulrich Drepper.
 961
 962 * Faster sqrt and sqrtf implemention for some PPC variants.
 963   Implemented by Steven Munroe.
 964 \f
 965 Version 2.7
 966
 967 * The following bugs are resolved with this release:
 968
 969   4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
 970   4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
 971   4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
 972   4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
 973   5071, 5103, 5104, 5112, 5113, 5184, 5186
 974
 975 * More checking functions: fread, fread_unlocked, open*, mq_open.
 976   Implemented by Jakub Jelinek and Ulrich Drepper.
 977
 978 * Extend fortification to C++.  Implemented by Jakub Jelinek.
 979
 980 * Implement 'm' modifier for scanf.  Add stricter C99/SUS compliance
 981   by not recognizing 'a' as a modifier when those specs are requested.
 982   Implemented by Jakub Jelinek.
 983
 984 * PPC optimizations to math and string functions.
 985   Implemented by Steven Munroe.
 986
 987 * New interfaces: mkostemp, mkostemp64.  Like mkstemp* but allow additional
 988   options to be passed.  Implemented by Ulrich Drepper.
 989
 990 * More CPU set manipulation functions.  Implemented by Ulrich Drepper.
 991
 992 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
 993   Implemented by Ulrich Drepper.
 994
 995 * Handle private futexes in the NPTL implementation.
 996   Implemented by Jakub Jelinek and Ulrich Drepper.
 997
 998 * Add support for O_CLOEXEC.  Implement in Hurd.  Use throughout libc.
 999   Implemented by Roland McGrath and Ulrich Drepper.
1000
1001 * Linux/x86-64 vDSO support.  Implemented by Ulrich Drepper.
1002
1003 * SHA-256 and SHA-512 based password encryption.
1004   Implemented by Ulrich Drepper.
1005
1006 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
1007   ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
1008   yo_NG.
1009
1010 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
1011   Implemented by Ulrich Drepper.
1012 \f
1013 Version 2.6
1014
1015 * The following bugs are resolved with this release:
1016
1017   3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1018   3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1019   3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1020   3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1021   3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1022   4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1023   4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1024   4702, 4858
1025
1026 * New Linux interfaces: epoll_pwait, sched_getcpu.
1027
1028 * New generic interfaces: strerror_l.
1029
1030 * nscd can now cache the services database.   Implemented by Ulrich Drepper.
1031 \f
1032 Version 2.5
1033
1034 * The following bugs are resolved with this release:
1035
1036   39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1037   1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1038   2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1039   2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1040   2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1041   2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1042   2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1043   3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1044   3225, 3251, 3252, 3253, 3273
1045
1046 * For Linux, the sorting of addresses returned by getaddrinfo now also
1047   handles rules 3, 4, and 7 from RFC 3484.  I.e., all rules are handled.
1048   Implemented by Ulrich Drepper.
1049
1050 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1051   Implemented by Ulrich Drepper.
1052
1053 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1054
1055 * New iconv module for MIK.  Contributed by Alexander Shopov.
1056
1057 * For sites with broken group and/or passwd database, the auto-propagate
1058   option of nscd can prevent creating ID lookup entries from the results
1059   of a name lookup and vice versa.   This usually is no problem but some
1060   site might have problems with the default behavior.
1061   Implemented by Ulrich Drepper.
1062
1063 * Iterating over entire database in NIS can be slow.  With the
1064   SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1065   to trade time for memory.  The entire database will be read at once.
1066   Implemented by Ulrich Drepper.
1067
1068 * The interfaces introduced in RFC 3542 have been implemented by
1069   Ulrich Drepper.
1070
1071 * Support for the new ELF hash table format was added by Ulrich Drepper.
1072
1073 * Support for priority inheritance mutexes added by Jakub Jelinek and
1074   Ulrich Drepper.
1075
1076 * Support for priority protected mutexes added by Jakub Jelinek.
1077
1078 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1079   or_IN, csb_PL, fy_NL, sr_ME.
1080 \f
1081 Version 2.4
1082
1083 * More overflow detection functions.
1084
1085 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1086   IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1087
1088   More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1089   IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1090   IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1091   IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1092   IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1093   by Masahide Washizawa.
1094
1095 * It is now possible to install audit libraries for the dynamic linker using
1096   LD_AUDIT.  Implemented by Ulrich Drepper.
1097
1098 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1099   longer supported.  The new NPTL implementation requires Linux 2.6 kernels.
1100   For a libc and libpthread that works well on Linux 2.4 kernels, we
1101   recommend using the stable 2.3 branch.
1102
1103 * The new function open_wmemstream acts like open_memstream,
1104   but uses a wchar_t wide character buffer.
1105
1106 * The new function ppoll is an improved version of poll, similar to pselect.
1107
1108 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1109   futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1110   renameat, unlinkat, linkat, symlinkat, readlinkat.
1111
1112 * New Linux kernel system calls: unshare,
1113   inotify_init, inotify_add_watch, inotify_rm_watch.
1114
1115 * The euidaccess function is now also known by the alias eaccess,
1116   for compatibility with some other systems.
1117
1118 * Timezone data updated to 2006b version.
1119 \f
1120 Version 2.3.6
1121
1122 * The following bugs are resolved with this release:
1123
1124   38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1125   1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1126   1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1127   1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1128   1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1129   1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1130
1131   Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1132
1133 * As of this release, GCC 4 can be used to compile the C Library.
1134
1135 * Timezone data updated to 2005m version.
1136 \f
1137 Version 2.3.5
1138
1139 * The following bugs are resolved with this release:
1140
1141   284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1142   722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1143   737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1144   777, 787, 821, 822, 823, 825
1145
1146   Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1147 \f
1148 Version 2.3.4
1149
1150 * Support for RFC 3678.  Real implementations exist only for Linux so far.
1151   Implemented by Ulrich Drepper.
1152
1153 * nscd can now cache entries persistently.  Expiring entries are reloaded.
1154   For speedups the cache can be shared in memory with client processes.
1155   Implemented by Ulrich Drepper.
1156
1157 * nscd can now perform SELinux checks.
1158   Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1159
1160 * getaddrinfo queries are now cached.  Canonical name lookup is performed
1161   efficiently.
1162   Implemented by Ulrich Drepper.
1163
1164 * The nothrow function attribute is used when headers are used by gcc when
1165   compiling C code.  This can avoid significant amounts of exception
1166   handling data.
1167
1168 * The malloc functions perform more error checking and are stricter when
1169   it comes to reacting on errors.  The default action is to terminate
1170   the process after showing an error message.  Implemented by Ulrich Drepper.
1171
1172 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1173   lookups anymore unless explicitly requested.  Implemented by Ulrich Drepper.
1174
1175 * Namespaces in ld.so are implemented.  DSOs can be loaded in separate
1176   namespaces using the new function dlmopen().  This feature is of course,
1177   like most other dynamic loading functionality, not available in statically
1178   linked applications.  Implemented by Ulrich Drepper.
1179
1180 * Low-overhead boundary checking variants of string and some stdio functions
1181   were added.  These are to be used in conjunction with a gcc patch by
1182   Jakub Jelinek which adds calls to these functions if possible.
1183   Implemented by Jakub Jelinek and Ulrich Drepper.
1184
1185 * Old code for several operating systems and machine architectures that
1186   have not been in working condition in a long time have been removed from
1187   the main source tree maintained by the GNU C Library's maintainers.
1188   These files are now reside in the separate `ports' source module
1189   that is usable as an add-on when building the library.
1190 \f
1191 Version 2.3.3
1192
1193 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1194   interrogate the dynamic linker, compatible with the Solaris interface.
1195
1196 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1197   implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1198
1199 * getifaddrs now uses the netlink interface on Linux to get its information.
1200   Implemented by Thorsten Kukuk.
1201
1202 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1203   Implemented by Ulrich Drepper.
1204
1205 * support for non-executable stacks on x86 has been added.  Changes mostly
1206   by Roland McGrath.
1207
1208 * regex is now much faster for multibyte locales.  Changes by Jakub Jelinek
1209   and Ulrich Drepper.
1210
1211 * getaddrinfo now performs destination address selection according to
1212   RFC 3484.
1213 \f
1214 Version 2.3.2
1215
1216 * Thread-safe interfaces for many functions that access locale data
1217   were added in version 2.3, but these features were omitted from NEWS.
1218   Many functions have variants with an `_l' suffix that take a `locale_t'
1219   object as a parameter rather than consulting the current locale.
1220   The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1221   create and maintain `locale_t' objects.  Additionally, the new function
1222   `uselocale' sets "the current locale" (as used by functions not so
1223   parameterized) set for an individual thread.  These features were added
1224   in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1225
1226 * The functions getresuid, getresgid, setresuid, and setresgid, which
1227   have long been available on Linux, are now declared in <unistd.h>
1228   and are now also available on the Hurd.
1229
1230 * ELF thread-local storage support (TLS) now works on x86-64.
1231
1232 * The new dynamic string token $LIB is expanded in shared library names.
1233   This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1234
1235 * Aldy Hernandez contributed complete software floating point support for
1236   PowerPC machines with no FPU.
1237
1238 * fexecve is implemented on Linux.
1239
1240 * The `btowc' function should work at least twice as fast due to
1241   specialized callbacks in the iconv modules.  Implemented by Bruno Haible.
1242
1243 * With approriate thread add-ons cancelable functions are now implemented
1244   in libc.so as well.  No need to call the function in libpthread.  This
1245   change allowed to finally disable the incorrect and expensive handling
1246   of weak definition in ld.so.
1247
1248 * Yet more PLT entries in libc.so have been removed.  We finally arrived
1249   at the bare minimum.  Startup times improved appropriately.
1250
1251 * Support for the new Linux/x86 system call interface was added.  The
1252   AT_SYSINFO auxiliary vector entry is recognized and handled.
1253 \f
1254 Version 2.3
1255
1256 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1257   charsets.
1258
1259 * iconv (the program and the interface) now accepts empty names (excluding
1260   options like //TRANSLIT) to mean "use charset of current locale".
1261
1262 * localedef can now transliterate characters in strings which are not in
1263   the provided charmap.  The information from the input locale is used.
1264
1265 * Prelinking support was added for ELF targets.  This requires additional
1266   tools and recent versions of the GNU binutils.  Contributed by Jakub Jelinek.
1267
1268 * Read-only stdio streams now use mmap to speed up operation by eliminating
1269   copying and buffer underflows.  To use add 'm' to the mode string of
1270   the fopen/fdopen/freopen call.  Implemented by Ulrich Drepper.
1271
1272 * The malloc functions were completely rewritten by Wolfram Gloger based
1273   on Doug Lea's malloc-2.7.0.c.
1274
1275 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1276   implementation of regex.
1277
1278 * Bruno Haible upgraded the iconv and locale implementation to support
1279   Unicode 3.2.
1280
1281 * Contents of the LC_* and LANG environment variables in the CEN style are
1282   not recognized anymore.   It never was used.  Change by Ulrich Drepper.
1283
1284 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1285   thread-local storage (TLS) ABI on some platforms.
1286   Changes by Ulrich Drepper.  SH support by Kaz Kojima.
1287
1288 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1289   EUC-JISX0213, and TSCII.
1290
1291 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1292   BSD-compatible interface for getting all network interface addresses.
1293   Implementation for IPv4 by Roland McGrath.
1294
1295 * Loading of locale data is faster due to the introduction of a locale
1296   archive.  Implemented by Roland McGrath and Ulrich Drepper.
1297
1298 * Startup times are significantly reduced by not using exported functions
1299   inside the library itself.  Changes by Jakub Jelinek, Roland McGrath,
1300   and Ulrich Drepper.
1301
1302 * Steven Munroe contributed a port to PowerPC64/Linux.
1303 \f
1304 Version 2.2.6
1305
1306 * The Hurd now uses the GNU libio implementation of stdio rather than the
1307   old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1308
1309 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1310   with the same behavior as the Linux system call of the same name.
1311 \f
1312 Version 2.2.5
1313
1314 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1315   128-bit long double format.
1316
1317 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1318   IBM1161, and IBM1162 charsets.
1319
1320 * Andreas Jaeger contributed a port to x86-64/Linux.
1321
1322 * Peter Bruin contributed a port to PowerPC/Hurd.
1323
1324 * libc functions using I/O streams now can handle wide-oriented streams
1325   as well.
1326
1327 * optimizations in the dynamic linker.  Binaries created by recent binutils
1328   versions start up quicker due to reduced time spent on relocations.
1329
1330 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1331 \f
1332 Version 2.2.4
1333
1334 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1335   asinh, atanh, j0 for the 128-bit long double format.
1336
1337 * Bruno Haible updated all the code handling Unicode in some form to
1338   support Unicode 3.1.
1339
1340 * Speed of regex for single-byte locales is back to previous levels.
1341   Patch by Isamu Hasegawa.
1342
1343 * Alpha, SPARC, and IA-64 now also using floating stacks.
1344
1345 * Startup time of internationalized applications greatly improved through
1346   iconv cache.  Use iconvconfig to generate the cache file.
1347   Contributed by Ulrich Drepper.
1348
1349 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1350   severe performance problems.  Patch by David Mosberger.
1351
1352 * The Hurd port got a lot more functionality like AIO, various stdio
1353   extensions, etc.  Mainly done by Roland McGrath.
1354
1355 * mtrace can now lookup symbols in shared libraries.
1356 \f
1357 Version 2.2.3
1358
1359 * Intel's IA-64 math library is largely integrated.  It provides fast and
1360   accurate implementatations for most basic and standard math functions
1361   in float, double, and long double format.
1362
1363 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1364   and asin for the 96-bit long double format and asin, log, tan for the
1365   128-bit long double format.
1366
1367 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1368   The basic double functions exist today.  Contributed by Abraham Ziv
1369   <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1370   <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1371
1372 * An asynchronous name lookup library was added.  The interface is designed
1373   after POSIX AIO.  The proposal was circulated beforehand to get comments.
1374   No negative ones came in.  Implemented by Ulrich Drepper.
1375
1376 * Port to S390/64bit contributed by Martin Schwidefsky
1377   <schwidefsky@de.ibm.com>.
1378
1379 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1380   of functions for Linux/IA-64.
1381
1382 * The RPC code is now thread safe.  Threads can now use the same service
1383   of different services at the same time.  Patch by Eric Norum
1384   <eric.norum@usask.ca> with some help by Ulrich Drepper.
1385
1386 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1387   family of functions for Linux/S390.
1388
1389 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1390   of functions for Linux/x86.
1391
1392 * Port to Linux/CRIS contributed by Axis Communications.
1393 \f
1394 Version 2.2.2
1395
1396 * Lots of headers were cleaned up.  Using the tool in the conform/ subdir
1397   we can now check for namespace violations and missing declarations.  The
1398   result is that almost all headers are now Unix-compliant (as defined in
1399   the upcoming XPG6).  The negative side is that some programs might need
1400   corrections, too, if they depend on the incorrect form of the headers in
1401   previous versions which defined too many symbols and included too many
1402   other headers.
1403
1404 * regex now handles multibyte character sets correctly.
1405   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1406
1407 * iconv (the program) does now conform to the upcoming XPG6 and handles
1408   charmaps.  Instead of the charset names the path of charmaps can be
1409   provided and the conversion happens based on this data.
1410   Contributed by Ulrich Drepper.
1411
1412 * The locale program now provides detailed information about the installed
1413   locales.  While
1414
1415     locale -a
1416
1417   only lists the names of the supported locales
1418
1419     locale -a --verbose
1420
1421   provides details such as country, language, and codeset name.
1422   Contributed by Ulrich Drepper.
1423 \f
1424 Version 2.2.1
1425
1426 * The gencat program now parses the input file according to the charset
1427   selected by the LC_CTYPE category.  This is important for stateful
1428   character sets.  To make generating catalogs easier there is a way
1429   to overwrite the charset selected by the locale: before the first
1430   message or $ quote line the catalog can contain a line like
1431
1432     $ codeset=ISO-8859-2
1433
1434   to select the charset (ISO-8859-2 in this case).
1435
1436   Implemented by Shinya Hanataka and Ulrich Drepper.
1437
1438 * New codeset conversion modules: IBM-922  (Estonia PC codeset),
1439   IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1440   Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1441
1442 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1443   <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1444
1445 * The LANGUAGE environment variable is now ignored unless the locale is
1446   changed from the default "C" locale.
1447
1448 * The usual bug fixes.
1449 \f
1450 Version 2.2
1451
1452 * Greg McGary added runtime support for bounds checking using gcc's
1453   new -fbounded-pointers option.  ix86 target is complete.  PowerPC
1454   is in progress.
1455
1456 * Thorsten Kukuk added secure mode support to nscd.
1457
1458 * The Berkeley db libraries have been removed.
1459
1460   Related, the nss_db module is now in a separate package since it
1461   obviously requires a database library being available.
1462
1463 * Wide character I/O streams implemented by Ulrich Drepper.
1464
1465 * Functions from the extended socket API added by Ulrich Drepper.
1466
1467 * Functions feenableexcept and fedisableexcept to control the
1468   behaviour of individual exceptions have been added by Andreas Jaeger.
1469
1470 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1471
1472 * The resolver code has been updated from bind 8.2.3-T5B which supports
1473   threads.  The integration was done by Andreas Jaeger, Adam D. Bradley,
1474   and Mark Kettenis.
1475
1476   This change could in some situations effect backward compatibility.  Since
1477   now `_res' is a thread-local instead of a global variable, modifying it
1478   in one thread does not have any effect in other threads.
1479
1480   The resolver library was also extended to allow IPv6 as the transport
1481   protocol for the requests.  This work was done by Stig Venaas.
1482
1483 * Compatibility code for K&R C compilers has been removed from the
1484   header files.  A ISO C compiler is needed to use the library
1485   (conforming to either C89 or C99 standard).
1486
1487 * Complete rewrite of the localedef program to support multibyte character
1488   sets.  Implement handling of ISO 14651 and ISO 14652.  Rewrite strcoll,
1489   strxfrm, wcscoll, and wcsxfrm functions.  Make isw*() functions work.
1490   Implemented by Ulrich Drepper.
1491
1492   Bruno Haible significantly improved the generation and use of the data
1493   structures for the wide character tables.
1494
1495 * Plural handling in gettext implemented by Ulrich Drepper.
1496
1497 * The utmp daemon has been removed.
1498
1499 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1500
1501 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1502   and Yutaka Niibe.
1503
1504 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1505
1506 * POSIX barriers implemented by Kaz Kylheku.
1507
1508 * POSIX spawn function family implemented by Ulrich Drepper.
1509
1510 * POSIX spinlocks are now available.
1511
1512 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1513
1514 * the configure option --enable-kernel=X.Y.Z allows to strip out
1515   compatibility for kernel versions before X.Y.Z.  This is currently only
1516   implemented for Linux.
1517
1518 * the sockaddr_in6 structure changed.  The IPv6 working group added a new
1519   field sin6_scope_id.  This means that all programs using IPv6 should be
1520   recompiled.  Don't expect binary compatibility with previous glibc
1521   versions.
1522
1523 * various conversion modules for IBM character sets contributed by
1524   Masahide Washizawa.
1525
1526 * IA-64 port by Jes Sorensen and HJ Lu.
1527 \f
1528 Version 2.1.3
1529
1530 * bug fixes
1531
1532 \f
1533 Version 2.1.2
1534
1535 * bug fixes
1536
1537 \f
1538 Version 2.1.1
1539
1540 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1541
1542 * New xdr functions are added; some rpc functions are now 64bit clean.
1543
1544 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1545
1546 * Fixed known incompatibilities with glibc 2.0.
1547
1548 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1549
1550 * Optimized a number of functions (especially the ELF dynamic loader).
1551
1552 * Update timezone data files.
1553
1554 * lots of charmaps corrections
1555
1556 * some new locale definitions and charmaps
1557
1558 \f
1559 Version 2.1
1560
1561 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1562   conform to POSIX member type requirements.  Symbol versions have been
1563   adjusted as needed within the library, and for direct use by applications,
1564   but there is potential for problems if third-party libraries use
1565   struct timeval as part of their interface.  This does not present
1566   a problem for X and other "essential" system libraries.
1567
1568 * An additional locale model to support C++ Standard Library locale
1569   model and probably more was implemented by Ulrich Drepper.
1570
1571 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1572   symbol level.
1573
1574 * Miles Bader provided the `argp' function family to support hierachical
1575   command line argument parsing, layered on top of getopt.
1576
1577 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1578
1579 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1580   numbers.
1581
1582 * scanf recognizes the %a and %A format for scanning floating point numbers.
1583
1584 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1585   information and interfaces for the available integer types.
1586
1587 * about 130 new math functions were added to implement the ISO C9x math
1588   library.
1589
1590 * the new header <complex.h> contains definitions of the complex math
1591   functions from ISO C 9X.
1592
1593 * the new header <tgmath.h> defines generic macros to use complex or
1594   real valued functions.
1595
1596 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1597
1598 * Andreas Jaeger provided a test suite for the math library.
1599
1600 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1601
1602 * Ulrich Drepper added character set conversion functions (iconv).
1603
1604 * Optimized string functions have been added.
1605
1606 * The localedata addon is now part of glibc.
1607
1608 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1609
1610 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1611   daemon for NSS (nscd).
1612
1613   Missing a better place here are some numbers on improvements.  Under
1614   Linux 2.1.125 un-tar-ing the kernel sources takes
1615
1616                                   user  system     wall
1617
1618     using local files           12.19s   6.88s   22.91s
1619
1620     using NIS                   13.92s   8.91s   26.34s
1621
1622     using NIS & nscd            10.37s   7.34s   25.30s
1623
1624     using NIS+                  27.57s  30.37s  640.46s
1625
1626     using NIS+ & nscd           10.25s   7.83s   26.51s
1627
1628     using NIS & old nscd [1]    13.83s   8.32s   29.60s
1629
1630   Keep in mind that non-namelookup related operations dominate above times.
1631   It was just a common complain that using NIS+ unpacking the kernel is
1632   horribly slow.
1633
1634   [1] The old nscd implementation is not available anymore since it was
1635   distributed with glibc up to version 2.0.98 and thus is now replaced.
1636
1637 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1638
1639 * Mark Kettenis provided a Hesiod NSS module.
1640
1641 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1642   and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1643
1644 * rcmd can now handle netgroups (Dick Streefland).
1645
1646 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1647   Bambrough.
1648
1649 * Support for the IPv6 protocol has been added to the socket API, as per the
1650   latest draft standards.
1651
1652 * Support for Linux 2.2 has been added.
1653
1654 * Interface changes relative to the latest 2.0.x release:
1655 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1656 addseverity                     NEW: Unix98
1657 alphasort64                     NEW: LFS
1658 argp_err_exit_status            NEW: argp, GNU ext
1659 argp_error                      NEW: argp, GNU ext
1660 argp_failure                    NEW: argp, GNU ext
1661 argp_help                       NEW: argp, GNU ext
1662 argp_parse                      NEW: argp, GNU ext
1663 argp_program_bug_address        NEW: argp, GNU ext
1664 argp_program_version            NEW: argp, GNU ext
1665 argp_program_version_hook       NEW: argp, GNU ext
1666 argp_state_help                 NEW: argp, GNU ext
1667 argp_usage                      NEW: argp, GNU ext
1668 authdes_create                  NEW: Secure RPC
1669 authdes_getucred                NEW: Secure RPC
1670 authdes_pk_create               NEW: Secure RPC
1671 backtrace                       NEW: GNU ext.
1672 backtrace_symbols               NEW: GNU ext.
1673 backtrace_symbols_fd            NEW: GNU ext.
1674 cacos                           NEW: ISO C 9x
1675 cacosf                          NEW: ISO C 9x
1676 cacosh                          NEW: ISO C 9x
1677 cacoshf                         NEW: ISO C 9x
1678 cacoshl                         NEW: ISO C 9x
1679 cacosl                          NEW: ISO C 9x
1680 capget                          NEW: kernel
1681 capset                          NEW: kernel
1682 carg                            NEW: ISO C 9x
1683 cargf                           NEW: ISO C 9x
1684 cargl                           NEW: ISO C 9x
1685 casin                           NEW: ISO C 9x
1686 casinf                          NEW: ISO C 9x
1687 casinh                          NEW: ISO C 9x
1688 casinhf                         NEW: ISO C 9x
1689 casinhl                         NEW: ISO C 9x
1690 casinl                          NEW: ISO C 9x
1691 catan                           NEW: ISO C 9x
1692 catanf                          NEW: ISO C 9x
1693 catanh                          NEW: ISO C 9x
1694 catanhf                         NEW: ISO C 9x
1695 catanhl                         NEW: ISO C 9x
1696 catanl                          NEW: ISO C 9x
1697 cbc_crypt                       NEW: Secure RPC
1698 ccos                            NEW: ISO C 9x
1699 ccosf                           NEW: ISO C 9x
1700 ccosh                           NEW: ISO C 9x
1701 ccoshf                          NEW: ISO C 9x
1702 ccoshl                          NEW: ISO C 9x
1703 ccosl                           NEW: ISO C 9x
1704 cexp                            NEW: ISO C 9x
1705 cexpf                           NEW: ISO C 9x
1706 cexpl                           NEW: ISO C 9x
1707 cimag                           NEW: ISO C 9x
1708 cimagf                          NEW: ISO C 9x
1709 cimagl                          NEW: ISO C 9x
1710 clearerr_locked                 REMOVED
1711 clntunix_create                 NEW: sunrpc ext
1712 clog                            NEW: ISO C 9x
1713 clog10                          NEW: ISO C 9x
1714 clog10f                         NEW: ISO C 9x
1715 clog10l                         NEW: ISO C 9x
1716 clogf                           NEW: ISO C 9x
1717 clogl                           NEW: ISO C 9x
1718 conj                            NEW: ISO C 9x
1719 conjf                           NEW: ISO C 9x
1720 conjl                           NEW: ISO C 9x
1721 cpow                            NEW: ISO C 9x
1722 cpowf                           NEW: ISO C 9x
1723 cpowl                           NEW: ISO C 9x
1724 cproj                           NEW: ISO C 9x
1725 cprojf                          NEW: ISO C 9x
1726 cprojl                          NEW: ISO C 9x
1727 creal                           NEW: ISO C 9x
1728 crealf                          NEW: ISO C 9x
1729 creall                          NEW: ISO C 9x
1730 creat64                         NEW: LFS
1731 csin                            NEW: ISO C 9x
1732 csinf                           NEW: ISO C 9x
1733 csinh                           NEW: ISO C 9x
1734 csinhf                          NEW: ISO C 9x
1735 csinhl                          NEW: ISO C 9x
1736 csinl                           NEW: ISO C 9x
1737 csqrt                           NEW: ISO C 9x
1738 csqrtf                          NEW: ISO C 9x
1739 csqrtl                          NEW: ISO C 9x
1740 ctan                            NEW: ISO C 9x
1741 ctanf                           NEW: ISO C 9x
1742 ctanh                           NEW: ISO C 9x
1743 ctanhf                          NEW: ISO C 9x
1744 ctanhl                          NEW: ISO C 9x
1745 ctanl                           NEW: ISO C 9x
1746 des_setparity                   NEW: Secure RPC
1747 ecb_crypt                       NEW: Secure RPC
1748 endutxent                       NEW: Unix98
1749 exp10                           NEW: ISO C 9x
1750 exp10f                          NEW: ISO C 9x
1751 exp10l                          NEW: ISO C 9x
1752 exp2                            NEW: ISO C 9x
1753 exp2f                           NEW: ISO C 9x
1754 exp2l                           NEW: ISO C 9x
1755 fattach                         NEW: STREAMS
1756 fdetach                         NEW: STREAMS
1757 fdim                            NEW: ISO C 9x
1758 fdimf                           NEW: ISO C 9x
1759 fdiml                           NEW: ISO C 9x
1760 feclearexcept                   NEW: ISO C 9x
1761 fegetenv                        NEW: ISO C 9x
1762 fegetexceptflag                 NEW: ISO C 9x
1763 fegetround                      NEW: ISO C 9x
1764 feholdexcept                    NEW: ISO C 9x
1765 feof_locked                     REMOVED
1766 feraiseexcept                   NEW: ISO C 9x
1767 ferror_locked                   REMOVED
1768 fesetenv                        NEW: ISO C 9x
1769 fesetexceptflag                 NEW: ISO C 9x
1770 fesetround                      NEW: ISO C 9x
1771 fetestexcept                    NEW: ISO C 9x
1772 feupdateenv                     NEW: ISO C 9x
1773 fflush_locked                   REMOVED
1774 ffsl                            NEW: GNU ext.
1775 ffsll                           NEW: GNU ext.
1776 fgetpos64                       NEW: LFS
1777 fgets_unlocked                  NEW: GNU ext.
1778 fileno_locked                   REMOVED
1779 fma                             NEW: ISO C 9x
1780 fmaf                            NEW: ISO C 9x
1781 fmal                            NEW: ISO C 9x
1782 fmax                            NEW: ISO C 9x
1783 fmaxf                           NEW: ISO C 9x
1784 fmaxl                           NEW: ISO C 9x
1785 fmin                            NEW: ISO C 9x
1786 fminf                           NEW: ISO C 9x
1787 fminl                           NEW: ISO C 9x
1788 fmtmsg                          NEW: Unix98
1789 fopen64                         NEW: LFS
1790 fputc_locked                    REMOVED
1791 fputs_unlocked                  NEW: GNU ext.
1792 fread_unlocked                  NEW: GNU ext.
1793 freopen64                       NEW: LFS
1794 fseeko                          NEW: Unix98
1795 fsetpos64                       NEW: LFS
1796 fstatfs64                       NEW: LFS
1797 fstatvfs                        NEW: Unix98
1798 fstatvfs64                      NEW: LFS
1799 ftello                          NEW: Unix98
1800 ftello64                        NEW: LFS
1801 ftruncate64                     NEW: LFS
1802 ftw64                           NEW: LFS
1803 fwrite_unlocked                 NEW: GNU ext.
1804 gai_strerror                    NEW: IPv6
1805 gamma_r                         REMOVED
1806 gammaf_r                        REMOVED
1807 gammal_r                        REMOVED
1808 getchar_locked                  REMOVED
1809 getdate                         NEW: Unix98
1810 getdate_err                     NEW: Unix98
1811 getdate_r                       NEW: GNU ext.
1812 getmsg                          NEW: STREAMS
1813 getnameinfo                     NEW: IPv6
1814 getnetname                      NEW: Secure RPC
1815 getpmsg                         NEW: STREAMS
1816 getpt                           NEW: Unix98 PTY
1817 getrlimit64                     NEW: LFS
1818 getutxent                       NEW: Unix98
1819 getutxid                        NEW: Unix98
1820 getutxline                      NEW: Unix98
1821 glob64                          NEW: GNU ext.
1822 globfree64                      NEW: GNU ext.
1823 gnu_get_libc_release            NEW: GNU ext.
1824 gnu_get_libc_version            NEW: GNU ext.
1825 grantpt                         NEW: Unix98 PTY
1826 host2netname                    NEW: Secure RPC
1827 iconv                           NEW: iconv
1828 iconv_close                     NEW: iconv
1829 iconv_open                      NEW: iconv
1830 if_freenameindex                NEW: IPv6
1831 if_indextoname                  NEW: IPv6
1832 if_nameindex                    NEW: IPv6
1833 if_nametoindex                  NEW: IPv6
1834 in6addr_any                     NEW: IPv6
1835 in6addr_loopback                NEW: IPv6
1836 inet6_isipv4mapped              NEW: IPv6
1837 isastream                       NEW: STREAMS
1838 iswblank                        NEW: GNU ext.
1839 key_decryptsession              NEW: Secure RPC
1840 key_decryptsession_pk           NEW: Secure RPC
1841 key_encryptsession              NEW: Secure RPC
1842 key_encryptsession_pk           NEW: Secure RPC
1843 key_gendes                      NEW: Secure RPC
1844 key_get_conv                    NEW: Secure RPC
1845 key_secretkey_is_set            NEW: Secure RPC
1846 key_setnet                      NEW: Secure RPC
1847 key_setsecret                   NEW: Secure RPC
1848 llrint                          NEW: ISO C 9x
1849 llrintf                         NEW: ISO C 9x
1850 llrintl                         NEW: ISO C 9x
1851 llround                         NEW: ISO C 9x
1852 llroundf                        NEW: ISO C 9x
1853 llroundl                        NEW: ISO C 9x
1854 log2                            NEW: ISO C 9x
1855 log2f                           NEW: ISO C 9x
1856 log2l                           NEW: ISO C 9x
1857 lrint                           NEW: ISO C 9x
1858 lrintf                          NEW: ISO C 9x
1859 lrintl                          NEW: ISO C 9x
1860 lround                          NEW: ISO C 9x
1861 lroundf                         NEW: ISO C 9x
1862 lroundl                         NEW: ISO C 9x
1863 lseek64                         NEW: LFS
1864 makecontext                     NEW: Unix98
1865 mempcpy                         NEW: GNU ext.
1866 mmap64                          NEW: LFS
1867 moncontrol                      REMOVED
1868 modify_ldt                      NEW: kernel
1869 nan                             NEW: ISO C 9x
1870 nanf                            NEW: ISO C 9x
1871 nanl                            NEW: ISO C 9x
1872 nearbyint                       NEW: ISO C 9x
1873 nearbyintf                      NEW: ISO C 9x
1874 nearbyintl                      NEW: ISO C 9x
1875 netname2host                    NEW: Secure RPC
1876 netname2user                    NEW: Secure RPC
1877 nexttoward                      NEW: ISO C 9x
1878 nexttowardf                     NEW: ISO C 9x
1879 nexttowardl                     NEW: ISO C 9x
1880 nftw                            NEW: Unix98
1881 nftw64                          NEW: LFS
1882 open64                          NEW: LFS
1883 passwd2des                      NEW: Secure RPC
1884 pow10                           NEW: GNU ext.
1885 pow10f                          NEW: GNU ext.
1886 pow10l                          NEW: GNU ext.
1887 pread                           NEW: Unix98
1888 pread64                         NEW: LFS
1889 printf_size                     NEW: GNU ext.
1890 printf_size_info                NEW: GNU ext.
1891 profil_counter                  REMOVED
1892 pthread_mutexattr_getkind_np    REPLACED
1893 pthread_mutexattr_setkind_np    REPLACED
1894 ptsname                         NEW: Unix98 PTY
1895 ptsname_r                       NEW: Unix98 PTY
1896 putc_locked                     REMOVED
1897 putchar_locked                  REMOVED
1898 putgrent                        NEW: GNU ext.
1899 putmsg                          NEW: STREAMS
1900 putpmsg                         NEW: STREAMS
1901 pututxline                      NEW: Unix98
1902 pwrite                          NEW: Unix98
1903 pwrite64                        NEW: LFS
1904 readdir64                       NEW: LFS
1905 readdir64_r                     NEW: LFS
1906 remquo                          NEW: ISO C 9x
1907 remquof                         NEW: ISO C 9x
1908 remquol                         NEW: ISO C 9x
1909 round                           NEW: ISO C 9x
1910 roundf                          NEW: ISO C 9x
1911 roundl                          NEW: ISO C 9x
1912 rtime                           NEW: GNU ext.
1913 scalbln                         NEW: ISO C 9x
1914 scalblnf                        NEW: ISO C 9x
1915 scalblnl                        NEW: ISO C 9x
1916 scandir64                       NEW: LFS
1917 sendfile                        NEW: kernel
1918 setcontext                      NEW: Unix98
1919 setrlimit64                     NEW: LFS
1920 setutxent                       NEW: Unix98
1921 sighold                         NEW: Unix98
1922 sigignore                       NEW: Unix98
1923 sigqueue                        NEW: POSIX.1b
1924 sigrelse                        NEW: Unix98
1925 sigset                          NEW: POSIX.1b
1926 sigtimedwait                    NEW: POSIX.1b
1927 sigwaitinfo                     NEW: POSIX.1b
1928 sincos                          NEW: GNU ext.
1929 sincosf                         NEW: GNU ext.
1930 sincosl                         NEW: GNU ext.
1931 statfs64                        NEW: LFS
1932 statvfs                         NEW: Unix98
1933 statvfs64                       NEW: LFS
1934 strcasestr                      NEW: GNU ext.
1935 strtoimax                       NEW: ISO C 9x
1936 strtoumax                       NEW: ISO C 9x
1937 strverscmp                      NEW: GNU ext.
1938 svcauthdes_stats                NEW: Secure RPC
1939 svcunix_create                  NEW: sunrpc etx
1940 svcunixfd_create                NEW: sunrpc ext
1941 swapcontext                     NEW: Unix98
1942 tcgetsid                        NEW: Unix98 PTY
1943 tdestroy                        NEW: GNU ext.
1944 tgamma                          NEW: ISO C 9x
1945 tgammaf                         NEW: ISO C 9x
1946 tgammal                         NEW: ISO C 9x
1947 tmpfile64                       NEW: LFS
1948 trunc                           NEW: ISO C 9x
1949 truncate64                      NEW: LFS
1950 truncf                          NEW: ISO C 9x
1951 truncl                          NEW: ISO C 9x
1952 umount2                         NEW: kernel
1953 unlockpt                        NEW: Unix98 PTY
1954 updwtmpx                        NEW: Unix98
1955 user2netname                    NEW: Secure RPC
1956 utmpxname                       NEW: Unix98
1957 versionsort                     NEW: GNU ext.
1958 versionsort64                   NEW: GNU ext.
1959 waitid                          NEW: Unix98
1960 wcscasecmp                      NEW: GNU ext.
1961 wcsncasecmp                     NEW: GNU ext.
1962 wcsnlen                         NEW: GNU ext.
1963 wcstoimax                       NEW: ISO C 9x
1964 wcstoll                         NEW: ISO C 9x
1965 wcstoull                        NEW: ISO C 9x
1966 wcstoumax                       NEW: ISO C 9x
1967 wcswcs                          NEW: Unix98
1968 wordexp                         NEW: POSIX.2
1969 wordfree                        NEW: POSIX.2
1970 write_profiling                 REMOVED
1971 xdecrypt                        NEW: Secure RPC
1972 xdr_authdes_cred                NEW: Secure RPC
1973 xdr_authdes_verf                NEW: Secure RPC
1974 xdr_cryptkeyarg                 NEW: Secure RPC
1975 xdr_cryptkeyarg2                NEW: Secure RPC
1976 xdr_cryptkeyres                 NEW: Secure RPC
1977 xdr_getcredres                  NEW: Secure RPC
1978 xdr_key_netstarg                NEW: Secure RPC
1979 xdr_key_netstres                NEW: Secure RPC
1980 xdr_keybuf                      NEW: Secure RPC
1981 xdr_keystatus                   NEW: Secure RPC
1982 xdr_netnamestr                  NEW: Secure RPC
1983 xdr_sizeof                      NEW: Secure RPC
1984 xdr_unixcred                    NEW: sunrpc ext
1985 xencrypt                        NEW: Secure RPC
1986 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1987 \f
1988 Version 2.0.6
1989
1990 * more bug fixes
1991
1992 \f
1993 Version 2.0.5
1994
1995 * more bug fixes
1996
1997 * inet_ntoa is thread-safe
1998
1999 * updwtmp is moved from libutil to libc
2000
2001 * rewrite of cbrt function
2002
2003 * update of timezone data
2004 \f
2005 Version 2.0.4
2006
2007 * more bug fixes
2008 \f
2009 Version 2.0.3
2010
2011 * more bug fixes
2012 \f
2013 Version 2.0.2
2014
2015 * more bug fixes
2016
2017 * add atoll function
2018
2019 * fix complex problems in Berkeley DB code
2020
2021 * fix math functions
2022 \f
2023 Version 2.0.1
2024
2025 * fixed lots of header problems (especially Linux/GNU specific)
2026
2027 * dynamic loader preserves all registers
2028
2029 * Roland McGrath provided support for handling of auxiliary objects in
2030   the ELF dynamic loader.
2031
2032 * support for parallel builds is improved
2033 \f
2034 Version 2.0
2035
2036 * GNU extensions are no longer declared by default.  To enable them you
2037   must define the macro `_GNU_SOURCE' in your program or compile with
2038   `-D_GNU_SOURCE'.
2039
2040 * The library has changed from using GNU ld symbol aliases to using weak
2041   symbols where available.  The ELF object file format supports weak
2042   symbols; GNU ld also supports weak symbols in the a.out format.  (There
2043   is also now support for other GNU ld extensions in ELF.  Use the
2044   `--with-elf' option to configure to indicate you have ELF, and
2045   `--with-gnu-ld' if using GNU ld.)  This change resulted in the deletion
2046   of many files which contained only symbol aliases, reducing the size of
2047   the source and the compiled library; many other files were renamed to
2048   less cryptic names previously occupied by the symbol alias files.
2049   There is a new header file <elf.h> for programs which operate on
2050   files in the ELF format.
2051
2052 * Converted to Autoconf version 2, so `configure' has more options.
2053   Run `configure --help' to see the details.
2054
2055 * The library can now be configured to build profiling, highly-optimized
2056   (but undebuggable), and/or shared libraries (ELF with GNU ld only).  The
2057   `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2058   `configure' enable building these extra libraries.  The shared library is
2059   built by default when using both ELF and GNU ld.  When shared libraries
2060   are enabled, the new library `-ldl' is available for arbitrary run-time
2061   loading of shared objects; its interface is defined in <dlfcn.h>.  The
2062   new header file <link.h> gives access to the internals of the run-time
2063   dynamic linker, `ld.so'.  The shell script `ldd' is similar to the
2064   application of same name on other systems and it provides information
2065   about dynamically linked binaries.
2066
2067 * The C library now provides the run-time support code for profiling
2068   executables compiled with `-pg'.  Programs can control the profiling code
2069   through the interface in <sys/gmon.h>.  The `gmon.out' files written by
2070   the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2071   the support for this file format was contributed by David Mosberger-Tang.
2072
2073 * The math code has been replaced with a math library based on fdlibm from
2074   Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2075   Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2076   functions.  The math functions now reside in a separate library,  so
2077   programs using them will need to use `-lm' their linking commands.
2078
2079 * John C. Bowman contributed optimized ix87 assembler inline functions.
2080
2081 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2082   mechanism similar to that found in Solaris 2.  This is now used for the
2083   group, passwd, hosts, networks, services, protocols, rpc, ethers,
2084   shadow, netgroup, publickey, and alias databases.  The `nsswitch.conf'
2085   file controls what services are used for each individual database.  This
2086   works by loading shared libraries with names specified in `nsswitch.conf',
2087   so service modules can be changed or added at any time without even
2088   relinking any program.  Currently there are the file, db, and NIS based
2089   NSS services available.
2090
2091 * The new functions `strtoq' and `strtouq' parse integer values from
2092   strings, like `strtol' and `strtoul', but they return `long long int' and
2093   `unsigned long long int' values, respectively (64-bit quantities).
2094
2095 * The new functions `strtof' and `strtold' parse floating-point values from
2096   strings, like `strtod', but they return `float' and `long double' values,
2097   respectively (on some machines `double' and `long double' are the same).
2098
2099 * Ulrich Drepper has contributed new implementations of the floating-point
2100   printing and reading code used in the `printf' family of functions and
2101   `strtod', `strtof', and `strtold'.  These new functions are perfectly
2102   accurate, and much faster than the old ones.
2103
2104 * The implementation of the POSIX locale model was completely rewritten by
2105   Ulrich Drepper.  This includes the new programs `localedef' and `locale'
2106   to compile the POSIX locale definition.
2107
2108 * The former dummy implementations of the strcoll and strxfrm function are
2109   now replaced by fully functional code contributed by Ulrich Drepper.  The
2110   collation information comes from the POSIX locale definitions.
2111
2112 * The new header <langinfo.h> defines an interface for accessing
2113   various locale-dependent data (using the locale chosen with `setlocale').
2114
2115 * Ulrich Drepper has contributed a new suite of functions for operation on
2116   wide-character and multibyte-character strings, in <wchar.h>;
2117   and classification and case conversion of wide characters, in <wctype.h>.
2118   These new functions are conforming to the ISO C, Amendement 1 specification.
2119
2120 * There is now a second implementation of the standard I/O library available.
2121   It comes from GNU libg++ as was written by Per Bothner, heavily modified
2122   by Hongjiu Lu and made thread safe by Ulrich Drepper.
2123
2124 * You can now use positional parameter specifications in format strings
2125   for the `printf' and `scanf' families of functions.  For example,
2126   `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2127   ``Number 6, Mr Jones''.  This is mainly useful when providing different
2128   format strings for different languages, whose grammars may dictate
2129   different orderings of the values being printed.  To support this
2130   feature, the interface for `register_printf_handler' has changed; see
2131   the header file <printf.h> for details.
2132
2133 * The `printf' and `scanf' families of functions now understand a new
2134   formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2135   to group numbers as indicated by the locale; for `scanf' and friends, this
2136   says to accept as valid only a number with all the proper grouping
2137   separators in the right places.  In the default "C" locale, numbers are
2138   not grouped; but locales for specific countries will define the usual
2139   conventions (i.e. separate thousands with `,' in the US locale).
2140
2141 * The pgrp functions have been regularized, slightly incompatibly but much
2142   less confusingly.  The core functions are now `getpgid' and `setpgid',
2143   which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2144   argument) and BSD `setpgrp' (identical to `setpgid') functions are
2145   provided for compatibility.  There is no longer an incompatible `getpgrp'
2146   with an argument declared under _BSD_SOURCE; no BSD code uses it.
2147
2148 * The new header file <fts.h> and suite of functions simplify programs that
2149   operate on directory trees.  This code comes from 4.4 BSD.
2150
2151 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2152   Parts of the code were heavily modified by Ulrich Drepper to fit in the
2153   NSS scheme used in glibc.
2154
2155 * There is a new malloc debugging hook `__memalign_hook'.
2156
2157 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2158   `unsigned int' in <sys/types.h>.  These are for compatibility only and
2159   their use is discouraged.
2160
2161 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2162   done differently, so that it works even without GNU ld.
2163
2164 * New function `euidaccess' checks allowed access to a file like `access',
2165   but using the effective IDs instead of the real IDs.
2166
2167 * The time zone data files have been updated for the latest and greatest
2168   local time conventions of the countries of the world.
2169
2170 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2171   see <dirent.h>.
2172
2173 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2174   for formatting floating-point numbers.  They are provided only for
2175   compatibility; new programs should use `sprintf' instead.  There are
2176   also equivalent function for the `long double' floating-point type and
2177   all functions also exist in a reentrant form.
2178
2179 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2180   functions for maintaining the login-record files (primarily of use to
2181   system programs such as `login'), and convenient functions for
2182   allocating and initializing a pseudo-terminal (pty) device.
2183
2184 * Ulrich Drepper has contributed new support for System V style
2185   shared memory and IPC on systems that support it.
2186
2187 * Ulrich Drepper has contributed several miscellaneous new functions found
2188   in System V: The `hsearch' family of functions provide an effective
2189   implementation of hash tables; `a64l' and `l64a' provide a very simple
2190   binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2191   number generator.
2192
2193 * Ulrich Drepper has contributed new reentrant counterparts for the
2194   `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2195
2196 * Ulrich Drepper has contributed new, highly-optimized versions of several
2197   string functions for the i486/Pentium family of processors.
2198
2199 * Ulrich Drepper has updated the Linux-specific code, based largely
2200   on work done in Hongjiu Lu's version of GNU libc for Linux.
2201   The GNU library now supports Linux versions 2.0.10 and later,
2202   using the ELF object file format (i[3456]86-*-linux).
2203
2204 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2205
2206 * David Mosberger-Tang and Richard Henderson have ported the C library
2207   to Linux/Alpha (alpha-*-linux).  Richard Henderson contributed the
2208   dynamic linking support for ELF/Alpha.
2209
2210 * Richard Henderson contributed several Alpha optimized assembler function
2211   for arithmetic and string handling.
2212
2213 * Ulrich Drepper has contributed a new set of message catalog functions to
2214   support multiple languages using the <libintl.h> interface, for use with
2215   his new package GNU gettext.  Translation volunteers have contributed
2216   catalogs of the library's messages in Spanish, German, and Korean.
2217
2218 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2219   program and the `catgets' function for reading the catalog files it
2220   creates.  (The <libintl.h> interface is preferred; we include the
2221   <nl_types.h> interface using `catgets' only for source compatibility with
2222   programs already written to use it.)
2223
2224 * New header file <values.h> gives SVID-compatible names for <limits.h>
2225   constants.
2226
2227 * Various new macros, declarations, and small header files for compatibility
2228   with 4.4 BSD.
2229
2230 * New function `group_member' is a convenient way to check if a process has
2231   a given effective group ID.
2232
2233 * When using GCC 2.7 and later, the socket functions are now declared in a
2234   special way so that passing an argument of type `struct sockaddr_in *',
2235   `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2236   `struct sockaddr *' type, does not generate a type-clash warning.
2237
2238 * New function `error' declared in header file <error.h> is a convenient
2239   function for printing error messages and optionally exiting; this is the
2240   canonical function used in GNU programs.  The new functions `err', `warn',
2241   and friends in header file <err.h> are the canonical 4.4 BSD interface for
2242   doing the same thing.
2243
2244 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2245   POSIX.2 `glob' function to do ~ and {...} expansion.
2246
2247 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2248   `clearenv' which is used in POSIX.9 is also available.
2249
2250 * New function `getsid' returns session ID number on systems that support it.
2251
2252 * We have incorporated the 4.4 BSD `db' library (version 1.85).  New header
2253   files <db.h> and <mpool.h> provide a rich set of functions for several
2254   types of simple databases stored in memory and in files, and <ndbm.h> is
2255   an old `ndbm'-compatible interface using the `db' functions.  Link with
2256   `-ldb' to get these functions.
2257
2258 * New macro `strdupa' copies a string like `strdup', but uses local stack
2259   space from `alloca' instead of dynamic heap space from `malloc'.
2260
2261 * New function `strnlen' is like `strlen' but searches only a given maximum
2262   number of characters for the null terminator.  `stpncpy', `strndup' and
2263   `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2264   function.
2265
2266 * New function `statfs' in header <sys/statfs.h>.
2267
2268 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2269   provide convenient functions for operating on blocks of null-terminated
2270   strings.
2271
2272 * A new suite of functions in <utmp.h> handle all the details of reading
2273   and writing the utmp file.
2274
2275 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2276   Thorsten Kukuk.
2277
2278 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2279   completely POSIX compliant and also implemented the extended functionality
2280   to handle alternate digit representation and alternate era date formats.
2281
2282 * Ulrich Drepper provided an implementation of the `strptime' function
2283   defined in XPG4.2 which transforms a string into a `struct tm' value.
2284
2285 * Paul Eggert provided the tzselect shell script as part of the timezone
2286   code.  The shell script makes it easy to select the correct timezone
2287   specification.
2288
2289 * The implementation of the malloc family of functions is completely replaced
2290   by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2291   The implementation uses the mmap function (if available) and it is
2292   optimized for the use in multi threaded programs.
2293
2294 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2295   functions.  This new functionality is usable by specifying a special
2296   salt string and it is compatible with implementation on *BSD systems.
2297
2298 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2299   `getsubopt' to handle second level command line options, `bsd_signal'
2300   to access BSD style `signal' functionality, the obsolete `regexp' style
2301   expression matcher.
2302
2303 * the `lchown' function is available on system which support this
2304   functionality.
2305
2306 * The implementation of the shadow password handling function was contributed
2307   by Ulrich Drepper.
2308
2309 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2310
2311 * POSIX.1g support was added.  The <sys/select.h> header is available,
2312   `isfdtype' and `pselect' are implemented.  Craig Metz contributed an
2313   implementation of `getaddrinfo'.
2314 \f
2315 Version 1.09
2316
2317 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2318
2319 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2320   friends, for parsing /etc/fstab.  This code comes from 4.4 BSD.
2321
2322 * The new function `daemon' from 4.4 BSD is useful for server programs that
2323   want to put themselves in the background.
2324
2325 * Joel Sherrill has contributed support for several standalone boards that
2326   run without an operating system.
2327
2328 * `printf', `scanf' and friends now accept a `q' type modifier for long
2329   long int as well as `ll'.  Formats using these might be `%qu' or `%lld'.
2330
2331 * All of the code taken from BSD (notably most of the math and networking
2332   routines) has been updated from the BSD 4.4-Lite release.
2333
2334 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2335
2336 * The new functions `getdomainname' and `setdomainname' fetch or change the
2337   YP/NIS domain name.  These are system calls which exist on systems which
2338   have YP (aka NIS).
2339
2340 * The time zone data files have been updated for the latest international
2341   conventions.
2342
2343 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2344   $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2345 \f
2346 Version 1.08
2347
2348 * The C library now includes support for Sun RPC, from Sun's free
2349   RPCSRC-4.0 distribution.  The `portmap', `rpcinfo', and `rpcgen' programs
2350   are included.  (There is still no support for YP.)
2351
2352 * Tom Quinn has contributed a port of the C library to SGI machines running
2353   Irix 4 (mips-sgi-irix4).
2354
2355 * The new `lockf' function is a simplified interface to the locking
2356   facilities of `fcntl', included for compatibility.
2357
2358 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2359
2360 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2361
2362 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2363   compatibility.
2364
2365 * The error message printed by `assert' for a failed assertion now includes
2366   the name of the program (if using GNU ld) and the name of the calling
2367   function (with versions of GCC that support this).
2368
2369 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2370
2371 * The library now includes the <sys/mman.h> header file and memory
2372   management functions `mmap', `munmap', `mprotect', `msync', and
2373   `madvise', on systems that support those facilities.
2374
2375 * The interface for `mcheck' has changed slightly: the function called to
2376   abort the program when an allocation inconsistency is detected now takes
2377   an argument that indicates the type of failure.  The new function
2378   `mprobe' lets you request a consistency check for a particular block at
2379   any time (checks are normally done only when you call `free' or `realloc'
2380   on a block).
2381
2382 * It is now possible to easily cross-compile the C library, building on one
2383   system a library to run on another machine and/or operating system.  All
2384   you need to do is set the variable `HOST_CC' in `configparms' to the
2385   native compiler for programs to run on the machine you are building on (a
2386   few generator programs are used on Unix systems); set `CC' to the
2387   cross-compiler.
2388
2389 * The new function `fexecve' (only implemented on the GNU system) executes
2390   a program file given a file descriptor already open on the file.
2391 \f
2392 Version 1.07
2393
2394 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2395   running OSF/1 (alpha-dec-osf1).  He says it is 75% complete.
2396
2397 * You can set the variable `libprefix' in `configparms' to specify a prefix
2398   to be prepended to installed library files; this makes it easy to install
2399   the GNU C library to be linked as `-lgnuc' or whatever.
2400
2401 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2402   copies a limited number of characters from a string, and returns the
2403   address of the last character written.
2404
2405 * You no longer need to check for whether the installed `stddef.h' is
2406   compatible with the GNU C library.  configure now checks for you.
2407
2408 * You can now define a per-stream `fileno' function to convert the
2409   stream's cookie into an integral file descriptor.
2410
2411 * ``malloc (0)'' no longer returns a null pointer.  Instead, it
2412   allocates zero bytes of storage, and returns a unique pointer which
2413   you can pass to `realloc' or `free'.  The behavior is undefined if
2414   you dereference this pointer.
2415
2416 * The C library now runs on Sony NEWS m68k machines running either
2417   NewsOS 3 or NewsOS 4.
2418
2419 * The new `syscall' function is a system-dependent primitive function
2420   for invoking system calls.  It has the canonical behavior on Unix
2421   systems, including unreliable return values for some calls (such as
2422   `pipe', `fork' and `getppid').
2423
2424 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2425   to `EAGAIN', which is the preferred name.  On systems whose kernels
2426   use two distinct codes, the C library now translates EWOULDBLOCK to
2427   EAGAIN in every system call function.
2428 \f
2429 Version 1.06
2430
2431 * The GNU C Library Reference Manual is now distributed with the library.
2432   `make dvi' will produce a DVI file of the printed manual.
2433   `make info' will produce Info files that you can read on line using C-h i
2434   in Emacs or the `info' program.
2435   Please send comments on the manual to bug-glibc-manual@gnu.org.
2436
2437 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2438
2439 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2440
2441 * Jason Merrill has contributed a port to the Sequent Symmetry running
2442   Dynix version 3 (i386-sequent-dynix).
2443
2444 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2445   ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2446
2447 * New function `memory_warnings' lets you arrange to get warnings when
2448   malloc is running out of memory to allocate, like Emacs gives you.
2449
2450 * The C library now contains the relocating allocator used in Emacs 19 for
2451   its editing buffers.  This allocator (ralloc) minimizes allocation
2452   overhead and fragmentation by moving allocated regions around whenever it
2453   needs to.  You always refer to a ralloc'd region with a "handle" (a
2454   pointer to a pointer--an object of type `void **').
2455
2456 * There is a new `printf' format: `%m' gives you the string corresponding
2457   to the error code in `errno'.
2458
2459 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2460   or `%[' conversion, but instead of filling in a fixed-sized buffer you
2461   pass, the `a' modifier says to fill in a `char **' you pass with a
2462   malloc'd string.
2463
2464 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2465   `FNM_CASEFOLD'.  `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2466   name like `foo/bar'.  `FNM_CASEFOLD' says to ignore case in matching.
2467
2468 * `mkstemp' is a traditional Unix function to atomically create and open a
2469   uniquely-named temporary file.
2470 \f
2471 Version 1.05
2472
2473 * The standard location for the file that says what the local timezone is
2474   has changed again.  It is now `/usr/local/etc/localtime' (or more
2475   precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2476
2477 * The distribution no longer contains any files with names longer than 14
2478   characters.
2479
2480 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2481   These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2482
2483 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2484 \f
2485 Version 1.04
2486
2487 * The configuration process has changed quite a bit.  The `configure'
2488   script is now used just like the configuration scripts for other GNU
2489   packages.  The `sysdeps' directory hierarchy is much rearranged.
2490   The file `INSTALL' explains the new scheme in detail.
2491
2492 * The header files no longer need to be processed into ANSI C and
2493   traditional C versions.  There is just one set of files to install, and
2494   it will work with ANSI or old C compilers (including `gcc -traditional').
2495
2496 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2497   MIPS DECStation running Ultrix 4.
2498
2499 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2500   Tom Quinn contributed the initial code.  The GNU C library can NOT yet be
2501   made itself into a shared library.
2502
2503 * Yet further improved support for the i386, running 4.3 BSD-like systems
2504   (such as Mach 3 with the Unix single-server), or System V.
2505
2506 * New function `strncasecmp' to do case-insensitive string comparison
2507   with limited length.
2508
2509 * New function `strsep' is a reentrant alternative to `strtok'.
2510
2511 * New functions `scandir' and `alphasort' for searching directories.
2512
2513 * New function `setenv' is a better interface to `putenv'.
2514
2515 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2516   function for traversing a directory tree.
2517
2518 * The GNU obstack package is now also part of the C library.
2519   The new function `open_obstack_stream' creates a stdio stream that
2520   writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2521   formatted output directly to an obstack.
2522
2523 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2524   cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2525
2526 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2527
2528 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2529   things to your strings.
2530
2531 * There are some new test programs: test-fseek, testmb, and testrand.
2532
2533 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2534   These ports are not finished, but are a good starting place for really
2535   supporting those systems.
2536
2537 * `/etc/localtime' is now the standard location for the file that says what
2538   the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2539   This follows the general principle that `/etc' is the place for all local
2540   configuration files.
2541
2542 * The C library header files now use `extern "C"' when used by the C++
2543   compiler, so the C library should now work with C++ code.
2544
2545 * The header file <bstring.h> is gone.  <string.h> now declares bcopy,
2546   bcmp, bzero, and ffs.  (Update: nowadays these functions are declared
2547   in <strings.h>.)
2548
2549 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2550   function which uses the `merge sort' algorithm, and is said to be
2551   significantly faster than the old GNU `qsort' function.  Merge sort is
2552   now the standard `qsort' function.  The new algorithm can require a lot
2553   of temporary storage; so, the old sorting function is called when the
2554   required storage is not available.
2555
2556 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2557   provides the Unix `crypt' function, plus some other entry points.
2558
2559 * The code and header files taken from 4.4 BSD have been updated with the
2560   latest files released from Berkeley.
2561 \f
2562 ----------------------------------------------------------------------
2563 Copyright information:
2564
2565 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2566
2567    Permission is granted to anyone to make or distribute verbatim copies
2568    of this document as received, in any medium, provided that the
2569    copyright notice and this permission notice are preserved,
2570    thus giving the recipient permission to redistribute in turn.
2571
2572    Permission is granted to distribute modified versions
2573    of this document, or of portions of it,
2574    under the above conditions, provided also that they
2575    carry prominent notices stating who last changed them.
2576 \f
2577 Local variables:
2578 version-control: never
2579 fill-column: 76
2580 End: