NEWS

   1 GNU C Library NEWS -- history of user-visible changes.
   2 Copyright (C) 1992-2015 Free Software Foundation, Inc.
   3 See the end for copying conditions.
   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 2.22
   9
  10 * The following bugs are resolved with this release:
  11
  12   4719, 15467, 17912, 17932, 17944, 17949.
  13 \f
  14 Version 2.21
  15
  16 * The following bugs are resolved with this release:
  17
  18   6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
  19   15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
  20   16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
  21   17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
  22   17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
  23   17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
  24   17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
  25   17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
  26   17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
  27   17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
  28   17892.
  29
  30 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
  31   too little memory for the to-be-scanned arguments and overflow the
  32   allocated buffer.  The implementation now correctly computes the required
  33   buffer size when using malloc, and switches to malloc from alloca as
  34   intended.
  35
  36 * A new semaphore algorithm has been implemented in generic C code for all
  37   machines. Previous custom assembly implementations of semaphore were
  38   difficult to reason about or ensure that they were safe. The new version
  39   of semaphore supports machines with 64-bit or 32-bit atomic operations.
  40   The new semaphore algorithm is used by sem_init, sem_open, sem_post,
  41   sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
  42
  43 * Port to Altera Nios II has been contributed by Mentor Graphics.
  44
  45 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
  46   implementations for powerpc64/powerpc64le.
  47   Implemented by Adhemerval Zanella (IBM).
  48
  49 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
  50   and powerpc64le.  This may improve lock scaling of existing programs on
  51   HTM capable systems.  The lock elision code is only enabled with
  52   --enable-lock-elision=yes.  Also, the TSX lock elision implementation for
  53   powerpc will issue a transaction abort on every syscall to avoid side
  54   effects being visible outside transactions.
  55
  56 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
  57   AArch64.  Contributed by ARM Ltd.
  58
  59 * i386 memcpy functions optimized with SSE2 unaligned load/store.
  60
  61 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
  62   under certain input conditions resulting in the execution of a shell for
  63   command substitution when the application did not request it. The
  64   implementation now checks WRDE_NOCMD immediately before executing the
  65   shell and returns the error WRDE_CMDSUB as expected.
  66
  67 * CVE-2012-3406 printf-style functions could run into a stack overflow when
  68   processing format strings with a large number of format specifiers.
  69
  70 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
  71   infinite loop if the DNS response contained a PTR record of an unexpected
  72   format.
  73
  74 * The minimum GCC version that can be used to build this version of the GNU
  75   C Library is GCC 4.6.  Older GCC versions, and non-GNU compilers, can
  76   still be used to compile programs using the GNU C Library.
  77
  78 * The GNU C Library is now built with -Werror by default.  This can be
  79   disabled by configuring with --disable-werror.
  80
  81 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
  82
  83 * The obsolete sigvec function has been removed.  This was the original
  84   4.2BSD interface that inspired the POSIX.1 sigaction interface, which
  85   programs have been using instead for about 25 years.  Of course, ABI
  86   compatibility for old binaries using sigvec remains intact.
  87
  88 * Merged gettext 0.19.3 into the intl subdirectory.  This fixes building
  89   with newer versions of bison.
  90
  91 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
  92   The original MIPS o32 hard-float ABI requires an FPU where double-precision
  93   registers overlay two consecutive single-precision registers.  MIPS32R2
  94   introduced a new FPU mode (FR=1) where double-precision registers extend the
  95   corresponding single-precision registers which is incompatible with the
  96   o32 hard-float ABI.  The MIPS SIMD ASE and the MIPSR6 architecture both
  97   require the use of FR=1 making a transition necessary.  New o32 ABI
  98   extensions enable users to migrate over time from the original o32 ABI
  99   through to the updated o32 FP64 ABI.  To achieve this the dynamic linker now
 100   tracks the ABI of any loaded object and verifies that new objects are
 101   compatible.  Mode transitions will also be requested as required and
 102   unsupportable objects will be rejected.  The ABI checks include both soft and
 103   hard float ABIs for o32, n32 and n64.
 104
 105   GCC 5 with GNU binutils 2.25 onwards:
 106   It is strongly recommended that all o32 system libraries are built using the
 107   new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
 108   with the original and all new o32 ABI extensions.  Configure a MIPS GCC
 109   compiler using --with-fp-32=xx to set this by default.
 110 \f
 111 Version 2.20
 112
 113 * The following bugs are resolved with this release:
 114
 115   6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
 116   15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
 117   16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
 118   16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
 119   16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
 120   16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
 121   16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
 122   16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
 123   16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
 124   16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
 125   16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
 126   16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
 127   17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
 128   17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
 129   17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
 130
 131 * Reverted change of ABI data structures for s390 and s390x:
 132   On s390 and s390x the size of struct ucontext and jmp_buf was increased in
 133   2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
 134   of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
 135   are preserved pointing straight to the same implementation as the old ones.
 136   Given that, new callers will simply provide a too-big buffer to these
 137   functions. Any applications/libraries out there that embed jmp_buf or
 138   ucontext_t in an ABI-relevant data structure that have already been rebuilt
 139   against 2.19 headers will have to rebuilt again. This is necessary in any
 140   case to revert the breakage in their ABI caused by the glibc change.
 141
 142 * Support for file description locks is added to systems running the
 143   Linux kernel. The standard file locking interfaces are extended to
 144   operate on file descriptions, not file descriptors, via the use of
 145   F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
 146   are associated with an open file instead of a process.
 147
 148 * Optimized strchr implementation for AArch64.  Contributed by ARM Ltd.
 149
 150 * The minimum Linux kernel version that this version of the GNU C Library
 151   can be used with is 2.6.32.
 152
 153 * Running the testsuite no longer terminates as soon as a test fails.
 154   Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
 155   with PASS or FAIL lines for individual tests.  A summary of the results is
 156   printed, including a list of failing lists, and "make check" exits with
 157   error status if there were any unexpected failures.  "make check
 158   stop-on-test-failure=y" may be used to keep the old behavior.
 159
 160 * The am33 port, which had not worked for several years, has been removed
 161   from ports.
 162
 163 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
 164   supported; they now act the same as _DEFAULT_SOURCE (but generate a
 165   warning).  Except for cases where _BSD_SOURCE enabled BSD interfaces that
 166   conflicted with POSIX (support for which was removed in 2.19), the
 167   interfaces those macros enabled remain available when compiling with
 168   _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
 169   test macros defined.
 170
 171 * Optimized strcmp implementation for ARMv7.  Contributed by ARM Ltd.
 172
 173 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
 174   This may improve lock scaling of existing programs on TX capable systems.
 175   The lock elision code is only built with --enable-lock-elision=yes and
 176   then requires a GCC version supporting the TX builtins.  With lock elision
 177   default mutexes are elided via __builtin_tbegin, if the cpu supports
 178   transactions. By default lock elision is not enabled and the elision code
 179   is not built.
 180
 181 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
 182   copy the path argument.  This allowed programs to cause posix_spawn to
 183   deference a dangling pointer, or use an unexpected pathname argument if
 184   the string was modified after the posix_spawn_file_actions_addopen
 185   invocation.
 186
 187 * All supported architectures now use the main glibc sysdeps directory
 188   instead of some being in a separate "ports" directory (which was
 189   distributed separately before glibc 2.17).
 190
 191 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
 192   On configurations that support it (all Linux configurations), it's now
 193   used regardless of the --enable-add-ons switch to configure.  It is no
 194   longer possible to build such configurations without pthreads support.
 195
 196 * Locale names, including those obtained from environment variables (LANG
 197   and the LC_* variables), are more tightly checked for proper syntax.
 198   setlocale will now fail (with EINVAL) for locale names that are overly
 199   long, contain slashes without starting with a slash, or contain ".." path
 200   components. (CVE-2014-0475)  Previously, some valid locale names were
 201   silently replaced with the "C" locale when running in AT_SECURE mode
 202   (e.g., in a SUID program).  This is no longer necessary because of the
 203   additional checks.
 204
 205 * On x86-64, the dynamic linker's lazy-binding support is now compatible
 206   with application code using Intel MPX instructions.  (With all previous
 207   versions, the MPX register state could be clobbered when making calls
 208   into or out of a shared library.)  Note that while the new dynamic
 209   linker is compatible with all known x86 hardware whether or not it
 210   supports Intel MPX, some x86 instruction-set emulators might fail to
 211   handle the new instruction encodings.  This is known to affect Valgrind
 212   versions up through 3.9 (but will be fixed in the forthcoming 3.10
 213   release), and might affect other tools that do instruction emulation.
 214
 215 * Support for loadable gconv transliteration modules has been removed.
 216   The support for transliteration modules has been non-functional for
 217   over a decade, and the removal is prompted by security defects.  The
 218   normal gconv conversion modules are still supported.  Transliteration
 219   with //TRANSLIT is still possible, and the //IGNORE specifier
 220   continues to be  supported. (CVE-2014-5119)
 221
 222 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
 223   IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
 224   resulting a denial-of-service security vulnerability in applications which
 225   use functions related to iconv. (CVE-2014-6040)
 226 \f
 227 Version 2.19
 228
 229 * The following bugs are resolved with this release:
 230
 231   156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
 232   7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
 233   12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
 234   14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
 235   15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
 236   15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
 237   15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
 238   15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
 239   15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
 240   15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
 241   15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
 242   15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
 243   16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
 244   16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
 245   16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
 246   16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
 247   16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
 248   16431, 16453, 16474, 16506, 16510, 16529
 249
 250 * Slovenian translations for glibc messages have been contributed by the
 251   Translation Project's Slovenian team of translators.
 252
 253 * The public headers no longer use __unused nor __block.  This change is to
 254   support compiling programs that are derived from BSD sources and use
 255   __unused internally, and to support compiling with Clang's -fblock
 256   extension which uses __block.
 257
 258 * CVE-2012-4412 The strcoll implementation caches indices and rules for
 259   large collation sequences to optimize multiple passes.  This cache
 260   computation may overflow for large collation sequences and may cause a
 261   stack or buffer overflow.  This is now fixed to use a slower algorithm
 262   which does not use a cache if there is an integer overflow.
 263
 264 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
 265   rules for large collation sequences to optimize multiple passes and falls
 266   back to alloca if malloc fails, resulting in a possible stack overflow.
 267   The implementation now falls back to an uncached collation sequence lookup
 268   if malloc fails.
 269
 270 * CVE-2013-4788 The pointer guard used for pointer mangling was not
 271   initialized for static applications resulting in the security feature
 272   being disabled. The pointer guard is now correctly initialized to a
 273   random value for static applications. Existing static applications need
 274   to be recompiled to take advantage of the fix (bug 15754).
 275
 276 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
 277   to the d_name member of struct dirent, or omit the terminating NUL
 278   character.  (Bugzilla #14699).
 279
 280 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
 281   aligned_alloc functions could allocate too few bytes or corrupt the
 282   heap when passed very large allocation size values (Bugzilla #15855,
 283   #15856, #15857).
 284
 285 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
 286   for AF_INET6 has been fixed (Bugzilla #16072).
 287
 288 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
 289   pap_CW, quz_PE, the_NP.
 290
 291 * Substantially revised locales: gd_GB, ht_HT
 292
 293 * The LC_ADDRESS field was updated to support country_car for almost all
 294   supported locales.
 295
 296 * ISO 1427 definitions were updated.
 297
 298 * ISO 3166 definitions were updated.
 299
 300 * The localedef utility now supports --big-endian and --little-endian
 301   command-line options to generate locales for a different system from that
 302   for which the C library was built.
 303
 304 * Binary locale files now only depend on the endianness of the system for
 305   which they are generated and not on other properties of that system.  As a
 306   consequence, binary files generated with new localedef may be incompatible
 307   with old versions of the GNU C Library, and binary files generated with
 308   old localedef may be incompatible with this version of the GNU C Library,
 309   in the following circumstances:
 310
 311   + Locale files may be incompatible on m68k systems.
 312
 313   + Locale archive files (but not separate files for individual locales) may
 314     be incompatible on systems where plain "char" is signed.
 315
 316 * The configure option --disable-versioning has been removed.  Builds with
 317   --disable-versioning had not worked for several years.
 318
 319 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
 320   cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
 321
 322 * SystemTap probes for malloc have been introduced.
 323
 324 * SystemTap probes for slow multiple precision fallback paths of
 325   transcendental functions have been introduced.
 326
 327 * Support for powerpc64le has been added.
 328
 329 * The soft-float powerpc port now supports e500 processors.
 330
 331 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
 332
 333 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
 334   set of header declarations that are enabled by default, even when other
 335   feature test macros or compiler options such as -std=c99 would otherwise
 336   disable some of those declarations.
 337
 338 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
 339   conflict with POSIX.  The libbsd-compat library (which was a dummy library
 340   that did nothing) has also been removed.
 341
 342 * Preliminary documentation about Multi-Thread, Async-Signal and
 343   Async-Cancel Safety has been added.
 344
 345 * Change of ABI data structures for s390 and s390x:
 346   On s390 and s390x the size of struct ucontext and jmp_buf was increased to
 347   allow for future hardware extensions. All library functions that accept or
 348   return these structures were versioned in order to provide backwards
 349   compatibility with existing code. However, not all cases can be handled
 350   with interface versioning. If an application embeds either structure into
 351   another structure and that structure is passed to another compilation unit
 352   which expects the newer larger-sized object then any access to the new
 353   fields will result in undefined behaviour. Similarly any access to fields
 354   that were moved by the enlarging of the structures will cause undefined
 355   behaviour. To fix the undefined behaviour all objects that are part of the
 356   final in-memory image must agree on the size of structures, and this may
 357   require recompilation.
 358 \f
 359 Version 2.18
 360
 361 * The following bugs are resolved with this release:
 362
 363   2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
 364   11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
 365   14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
 366   14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
 367   14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
 368   15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
 369   15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
 370   15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
 371   15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
 372   15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
 373   15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
 374   15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
 375   15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
 376   15759.
 377
 378 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
 379   has been fixed by disabling the use of pt_chown (Bugzilla #15755).
 380   Distributions can re-enable building and using pt_chown via the new configure
 381   option `--enable-pt_chown'.  Enabling the use of pt_chown carries with it
 382   considerable security risks and should only be used if the distribution
 383   understands and accepts the risks.
 384
 385 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
 386   #15078).
 387
 388 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
 389   fixed (Bugzilla #15330).
 390
 391 * Add support for calling C++11 thread_local object destructors on thread
 392   and program exit.  This needs compiler support for offloading C++11
 393   destructor calls to glibc.
 394
 395 * Improved worst case performance of libm functions with double inputs and
 396   output.
 397
 398 * Support for priority inherited mutexes in pthread condition variables on
 399   non-x86 architectures.
 400
 401 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
 402
 403 * Optimized string functions for AArch64.  Implemented by Marcus Shawcroft.
 404
 405 * Optimized string functions for ARM.  Implemented by Will Newton and
 406   Richard Henderson.
 407
 408 * Optimized libm functions for SPARC.  Implemented by David S. Miller.
 409
 410 * Support for building more of ARM glibc as Thumb-2 code.  Implemented by
 411   Richard Henderson.
 412
 413 * Support for building most of MIPS glibc as MIPS16 code.  Implemented by
 414   Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
 415
 416 * Added a benchmark framework to track performance of functions in glibc.
 417
 418 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
 419   It is based on draft TS 18661 and currently enabled as a GNU extension.
 420
 421 * On Linux, the clock function now uses the clock_gettime system call
 422   for improved precision, rather than old times system call.
 423
 424 * Added support for version-3 tz format files.  This is needed when using
 425   the tz database release 2013e or later, and affects a few unusual cases --
 426   currently only TZ='America/Godthab' for time stamps after 2037.
 427
 428 * Added new API functions pthread_getattr_default_np and
 429   pthread_setattr_default_np to get and set the default pthread
 430   attributes of a process.
 431
 432 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
 433   This may improve lock scaling of existing programs on TSX capable systems.
 434   When the --enable-lock-elision=yes parameter is specified at configure
 435   time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
 436   mutexes.
 437
 438 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
 439   availability).  Implemented by Ryan S. Arnold.
 440
 441 * Support added for POWER8 platform.  Implemented by Ryan S. Arnold.
 442 \f
 443 Version 2.17
 444
 445 * The following bugs are resolved with this release:
 446
 447   1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
 448   9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
 449   11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
 450   13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
 451   13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
 452   14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
 453   14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
 454   14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
 455   14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
 456   14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
 457   14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
 458   14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
 459   14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
 460   14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
 461   14879, 14889, 14893, 14898, 14914.
 462
 463 * Optimization of memcpy for MIPS.
 464
 465 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
 466   EMFILE has been fixed (Bugzilla #14889).
 467
 468 * The add-on ports collection is now distributed in the "ports" subdirectory
 469   of the main GNU C Library distribution, rather than separately.
 470
 471 * Port to ARM AArch64 contributed by Linaro.
 472
 473 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
 474   Optimized versions of memcpy, memset, and memcmp added for System z10 and
 475   zEnterprise z196.
 476   Implemented by Andreas Krebbel.
 477
 478 * The new function secure_getenv allows secure access to the environment,
 479   returning NULL if running in a SUID/SGID process.  This function replaces
 480   the internal function __secure_getenv.
 481
 482 * SystemTap static probes have been added into the dynamic linker.
 483   Implemented by Gary Benson.
 484
 485 * Optimizations of string functions strstr, strcasestr and memmem.
 486   Implemented by Maxim Kuvyrkov.
 487
 488 * The minimum Linux kernel version that this version of the GNU C Library
 489   can be used with is 2.6.16.
 490
 491 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
 492   powerpc POWER7.  Implemented by Will Schmidt.
 493
 494 * New configure option --disable-nscd builds the C library such that it
 495   never attempts to contact the Name Service Caching Daemon (nscd).
 496   New configure option --disable-build-nscd avoids building nscd itself;
 497   this is the default if --disable-nscd is used.
 498
 499 * Improved support for cross-compilation, including cross-testing and
 500   bootstrap builds without a previously built glibc.
 501
 502 * Several testsuite tests are now able to test multiple IFUNC variants of an
 503   interface, rather than just testing the one that would be chooen by
 504   default.
 505
 506 * New configure options --with-bugurl and --with-pkgversion, for
 507   distributors to use to embed their bug-reporting and package version
 508   information in --help and --version output.
 509
 510 * The ttyname and ttyname_r functions on Linux now fall back to searching for
 511   the tty file descriptor in /dev/pts or /dev if /proc is not available.  This
 512   allows creation of chroots without the procfs mounted on /proc.
 513
 514 * The `crypt' function now fails if passed salt bytes that violate the
 515   specification for those values.  On Linux, the `crypt' function will
 516   consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
 517   enabled, and fail on encrypted strings using the MD5 or DES algorithm
 518   when the mode is enabled.
 519
 520 * The `clock_*' suite of functions (declared in <time.h>) is now available
 521   directly in the main C library.  Previously it was necessary to link with
 522   -lrt to use these functions.  This change has the effect that a
 523   single-threaded program that uses a function such as `clock_gettime' (and
 524   is not linked with -lrt) will no longer implicitly load the pthreads
 525   library at runtime and so will not suffer the overheads associated with
 526   multi-thread support in other code such as the C++ runtime library.
 527
 528 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
 529   sat_IN, and szl_PL.
 530 \f
 531 Version 2.16
 532
 533 * The following bugs are resolved with this release:
 534
 535   174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
 536   2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
 537   3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
 538   4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
 539   6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
 540   10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
 541   11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
 542   12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
 543   13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
 544   13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
 545   13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
 546   13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
 547   13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
 548   13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
 549   13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
 550   13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
 551   13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
 552   13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
 553   13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
 554   14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
 555   14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
 556   14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
 557   14277, 14278.
 558
 559 * Support for the x32 ABI on x86-64 added.  The x32 target is selected by
 560   configuring glibc with:
 561         BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
 562   Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
 563   Implemented by H.J. Lu.
 564
 565 * ISO C11 support:
 566
 567   + define static_assert
 568
 569   + do not declare gets
 570
 571   + declare at_quick_exit and quick_exit also for ISO C11
 572
 573   + aligned_alloc.  NB: The code is deliberately allows the size parameter
 574     to not be a multiple of the alignment.  This is a moronic requirement
 575     in the standard but it is only a requirement on the caller, not the
 576     implementation.
 577
 578   + timespec_get added
 579
 580   + uchar.h support added
 581
 582   + CMPLX, CMPLXF, CMPLXL added
 583
 584   Implemented by Ulrich Drepper.
 585
 586 * Support for the IA-64 has been moved to ports.
 587
 588 * Remove support for anything but ELF binary format
 589
 590 * Checking versions of poll, ppoll added.
 591   Implemented by Ulrich Drepper.
 592
 593 * More generic and 64-bit performance optimizations to math functions.
 594   Implemented by Ulrich Drepper.
 595
 596 * New configure option --enable-obsolete-rpc makes the deprecated RPC
 597   headers and functions available at compile time as they were before
 598   version 2.14.  This option will be removed at some time in the future
 599   after the TI-RPC library becomes fully sufficient for the needs of
 600   existing applications.
 601
 602 * Compatibility code for Linux kernel versions before 2.4 has been removed.
 603   Note that glibc is not expected to work with any Linux kernel version
 604   before 2.6.
 605
 606 * New header <sys/auxv.h> and function getauxval allowing easy access to
 607   the AT_* key-value pairs passed from the Linux kernel.  The header also
 608   defines the HWCAP_* bits associated with the AT_HWCAP key.
 609
 610 * New locales: mag_IN
 611
 612 * New configure option --enable-systemtap builds SystemTap static probes
 613   into libc for setjmp and longjmp and into libpthread for various operations.
 614   So far the setjmp/longjmp probes and some of the libpthread probes are
 615   provided only for i*86 and x86_64.
 616   Implemented by Roland McGrath and Rayson Ho.
 617
 618 * Optimized expf for x86-32 and x86-64.  Implemented by Liubov Dmitrieva.
 619
 620 * More optimized functions for PowerPC.  Implemented by Adhemerval Zanella
 621   and Will Schmidt.
 622
 623 * More optimized functions for SPARC.  Implemented by David S. Miller.
 624
 625 * Improved support for cross-compilation, especially bootstrap builds
 626   without a previously built glibc.
 627
 628 * Ports for the TILE-Gx and TILEPro families of processors.  Contributed by
 629   Chris Metcalf from Tilera.
 630
 631 * Support for the old ARM ABI has been removed from ports.  Only the EABI is
 632   now supported for ARM processors.
 633
 634 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
 635   as the name of the dynamic linker, to distinguish it from the
 636   /lib/ld-linux.so.3 dynamic linker used for the base EABI.
 637
 638 * Support for CRIS has been removed from ports.
 639
 640 * A new class of installed header has been documented for low-level
 641   platform-specific functionality.  PowerPC added the first instance with a
 642   function to provide time base register access.  Contributed by Tulio
 643   Magno Quites Machado Filho.
 644
 645 * ix86 configurations now install header files that are consistent with
 646   what x86-64 configurations install.  These same header files can be used
 647   for -m32, -m64, or -mx32 builds.
 648   Contributed by H.J. Lu.
 649
 650 * Math library bug fixes.  A thorough audit of all open math library bugs was
 651   conducted by Joseph Myers.  Significant progress was made on many math
 652   library bugs resulting in more accurate exceptions and function results.
 653   Many thanks to all those that contributed including Andreas Jaeger for his
 654   patch review and work on the x87 trigonometric instruction issues.
 655
 656 * Timezone data is no longer installed.  Timezone-related binaries and scripts
 657   will continue to be installed.  Users should obtain their timezone data from
 658   their distribution provider or from the tzdata package at
 659   <ftp://munnari.oz.au/pub/>.
 660 \f
 661 Version 2.15
 662
 663 * The following bugs are resolved with this release:
 664
 665   6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
 666   12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
 667   13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
 668   13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
 669   13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
 670   13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
 671   13484, 13506, 13515, 13523, 13524, 13538, 13540
 672
 673 * New program pldd to list loaded object of a process
 674   Implemented by Ulrich Drepper.
 675
 676 * Add nss_db support back to glibc.  No more dependency on Berkeley db
 677   and support for initgroups lookups.
 678   Implemented by Ulrich Drepper.
 679
 680 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
 681   Contributed by HJ Lu.
 682
 683 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
 684   Contributed by HJ Lu.
 685
 686 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
 687   on x86-32 and x86-64.
 688   Contributed by Liubov Dmitrieva.
 689
 690 * Optimized strchr and strrchr for SSE on x86-32.
 691   Contributed by Liubov Dmitrieva.
 692
 693 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
 694   for x86-64 and x86-32.
 695   Contributed by Liubov Dmitrieva.
 696
 697 * New interfaces: scandirat, scandirat64
 698   Implemented by Ulrich Drepper.
 699
 700 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
 701   Implemented by Ulrich Drepper.
 702
 703 * nscd now also caches the netgroup database.
 704   Implemented by Ulrich Drepper.
 705
 706 * Integrate libm with gcc's -ffinite-math-only option.
 707   Implemented by Ulrich Drepper.
 708
 709 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
 710   to math functions.  Implemented by Ulrich Drepper.
 711
 712 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
 713   Implemented by Ulrich Drepper.
 714
 715 * New Linux interfaces: process_vm_readv, process_vm_writev
 716
 717 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
 718   Implemented by Ulrich Drepper.
 719
 720 * Optimized nearbyint and strcasecmp for PPC.
 721   Implemented by Adhemerval Zanella.
 722
 723 * New locales: bho_IN, unm_US, es_CU, ta_LK
 724 \f
 725 Version 2.14
 726
 727 * The following bugs are resolved with this release:
 728
 729   386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
 730   11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
 731   11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
 732   11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
 733   12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
 734   12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
 735   12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
 736   12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
 737   12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
 738   12795, 12811, 12813, 12814, 12841
 739
 740 * The RPC implementation in libc is obsoleted.  Old programs keep working
 741   but new programs cannot be linked with the routines in libc anymore.
 742   Programs in need of RPC functionality must be linked against TI-RPC.
 743   The TI-RPC implementation is IPv6 enabled and there are other benefits.
 744
 745   Visible changes of this change include (obviously) the inability to link
 746   programs using RPC functions without referencing the TI-RPC library and the
 747   removal of the RPC headers from the glibc headers.
 748   Implemented by Ulrich Drepper.
 749
 750 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
 751   syncfs, setns, sendmmsg
 752
 753 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
 754   yue_HK, lij_IT, mhr_RU
 755
 756 * New encodings: CP770, CP771, CP772, CP773, CP774
 757
 758 * New program sotruss to trace calls through PLTs
 759   Implemented by Ulrich Drepper.
 760
 761 * The malloc hook implementation is marked deprecated and will be removed
 762   from the default implementation in the next version.  The design never
 763   worked ever since the introduction of threads.  Even programs which do
 764   not create threads themselves can use multiple threads created internally.
 765 \f
 766 Version 2.13
 767
 768 * The following bugs are resolved with this release:
 769
 770   3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
 771   11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
 772   12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
 773   12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
 774   12378, 12394, 12397
 775
 776 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
 777
 778 * POWER7 optimizations: memset, memcmp, strncmp
 779
 780 * New optimized string functions for x86-64: strnlen (SSE2),
 781   strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
 782   Implemented by Ulrich Drepper.
 783 \f
 784 Version 2.12
 785
 786 * The following bugs are resolved with this release:
 787
 788   3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
 789   10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
 790   11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
 791   11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
 792   11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
 793   11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
 794   11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
 795   11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
 796
 797 * New interfaces: pthread_getname_np, pthread_setname_np
 798
 799 * New Linux interface: recvmmsg
 800
 801 * STT_GNU_IFUNC implemented for Sparc by David Miller.
 802
 803 * The dynamic linker now recognizes supported ABI versions from the
 804   EI_ABIVERSION field in the ELF header.
 805   Implemented by Ulrich Drepper.
 806
 807 * New NIS mode selector ADJUNCT_AS_SHADOW.  The passwd.adjunct.byname table
 808   will not be used to fill in password fields in the passwd.byname replies.
 809   Instead it is used to synthesize the shadow.byname table, should it be
 810   missing.  This is a useful mode in some installations involving Solaris.
 811   Implemented by Ulrich Drepper.
 812
 813 * New locales: kok_IN, sq_MK, cv_RU
 814 \f
 815 Version 2.11
 816
 817 * The following bugs are resolved with this release:
 818
 819   3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
 820   10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
 821   10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
 822   10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
 823   10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
 824   10789, 10817, 10823, 10840, 10847
 825
 826 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
 827   mkostemps64
 828   Implemented by Ulrich Drepper.
 829
 830 * Checking version of longjmp added that fails if an uninitialized stack
 831   frame would be created.  Implemented by Ulrich Drepper.
 832
 833 * STT_GNU_IFUNC is now supported in static executables.
 834   Implemented by H.J. Lu.
 835
 836 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
 837
 838 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
 839   strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
 840   strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
 841   Contributed by H.J. Lu.
 842
 843   strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
 844   Implemented by Ulrich Drepper.
 845
 846 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
 847   strstr, strcasestr.
 848   Contributed by H.J. Lu.
 849
 850 * Support for fma instruction in AVX on x86-64.
 851   Implemented by H.J. Lu and Ulrich Drepper.
 852
 853 * AVX support in x86-64 auditing support in ld.so.
 854   Implemented by H.J. Lu.
 855
 856 * STB_GNU_UNIQUE support added.
 857   Implemented by Ulrich Drepper.
 858
 859 * Implement second fallback mode for optimized DNS lookup for even more
 860   broken environments.  If two requests from the same port are not
 861   handled correctly close the socket and open a new one before sending
 862   the second request.  The 'single-request-reopen' option in /etc/resolv.conf
 863   can be used to select this mode right away, instead of rediscovering the
 864   necessity is every process again.
 865   Implemented by Ulrich Drepper.
 866
 867 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
 868   Implemented by Adam Tkac.
 869
 870 * Optimized iconv conversions for S390x.
 871   Implemented by Andreas Krebbel.
 872
 873 * Using condvars with PI mutexes is now more efficient due to kernel
 874   support for requeueing to PI futexes.  NPTL support added for x86-64.
 875   Implemented by Ulrich Drepper.
 876
 877 * New locales: ps_AF, my_MM
 878 \f
 879 Version 2.10
 880
 881 * The following bugs are resolved with this release:
 882
 883   697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
 884   9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
 885   9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
 886   9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
 887   10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
 888
 889 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
 890   Implemented by Ulrich Drepper.
 891
 892 * New Linux interfaces: accept4, fallocate, fallocate64.
 893   Implemented by Ulrich Drepper.
 894
 895 * Correct declarations of string function when used in C++ code.  This
 896   could lead to compile errors for invalid C++ code.
 897
 898 * XPG7/POSIX 2008 compilation environment.  Many GNU-specific functions are
 899   now in POSIX.
 900
 901 * New POSIX 2008 interface: psiginfo
 902   Implemented by Ulrich Drepper.
 903
 904 * New ISO C++1x interfaces: quick_exit, at_quick_exit
 905   Implemented by Ulrich Drepper.
 906
 907 * Support for selecting between multiple function definitions at runtime
 908   using STT_GNU_IFUNC symbols.  Implemented by Ulrich Drepper.
 909
 910 * The libcrypt library can now use the hash function implementations in
 911   NSS.  Implemented by Ulrich Drepper.
 912
 913 * The malloc implementation can be compiled to be less memory efficient
 914   but higher performing in multi-threaded programs.
 915   Implemented by Ulrich Drepper.
 916
 917 * New locales: nan_TW@latin, ks_IN
 918
 919 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
 920   Implemented by Ulrich Drepper.
 921
 922 * Extended printf hook support.  It is possible to use user-defined types
 923   and extend existing format specifiers.
 924   Implemented by Ulrich Drepper.
 925
 926 * Handling for group shadow files has been added.
 927   Implemented by Ulrich Drepper.
 928
 929 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
 930   servers (the case, e.g., for some people using the built-in DNS
 931   server in ADSL modems/routers).  There is a once-per-process timeout
 932   in case of a broken server.  To avoid it, users can run nscd or put
 933   'options single-request' in /etc/resolv.conf.
 934   Implemented by Ulrich Drepper.
 935 \f
 936 Version 2.9
 937
 938 * The following bugs are resolved with this release:
 939
 940   3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
 941   6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
 942   6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
 943   6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
 944   6968, 6974, 6980, 6995, 7008, 7009, 7029
 945
 946 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
 947   up at the same time.  Implemented by Ulrich Drepper.
 948
 949 * TLS descriptors for LD and GD on x86 and x86-64.
 950   Implemented by Alexandre Oliva.
 951
 952 * getaddrinfo now handles DCCP and UDPlite.
 953   Implemented by Ulrich Drepper.
 954
 955 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
 956   htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
 957   Implemented by Ulrich Drepper.
 958
 959 * New implementation of memmem, strstr, and strcasestr which is O(n).
 960   Implemented by Eric Blake.
 961
 962 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
 963
 964 * Implement "e" option for popen to open file descriptor with the
 965   close-on-exec flag set.  Implemented by Ulrich Drepper.
 966
 967 * Implement "b" mode for fmemopen.  In this mode writes writes don't
 968   implicitly add a NUL byte and seeks from the end of the buffer really
 969   use the buffer end, not the string length as the basis.
 970   Implemented by Ulrich Drepper.
 971
 972 * Many functions, exported and internal, now atomically set the close-on-exec
 973   flag when run on a sufficiently new kernel.  Implemented by Ulrich Drepper.
 974
 975 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
 976   Sinhala)
 977   Implemented by Pravin Satpute.
 978
 979 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
 980 \f
 981 Version 2.8
 982
 983 * The following bugs are resolved with this release:
 984
 985   2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
 986   5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
 987   5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
 988   5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
 989   5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
 990   5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
 991   5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
 992
 993 * New locales: bo_CN, bo_IN, shs_CA.
 994
 995 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
 996
 997 * Sorting rules for some Indian languages (Devanagari and Gujarati).
 998   Implemented by Pravin Satpute.
 999
1000 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
1001
1002 * nscd caches now all timeouts for DNS entries
1003   Implemented by Ulrich Drepper.
1004
1005 * nscd is more efficient and wakes up less often.
1006   Implemented by Ulrich Drepper.
1007
1008 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
1009   vdprintf, and obstack_vprintf.
1010   Implemented by Jakub Jelinek.
1011
1012 * Faster memset for x86-64.
1013   Implemented by Harsha Jagasia and H.J. Lu.
1014
1015 * Faster memcpy on x86.
1016   Implemented by Ulrich Drepper.
1017
1018 * ARG_MAX is not anymore constant on Linux.  Use sysconf(_SC_ARG_MAX).
1019   Implemented by Ulrich Drepper.
1020
1021 * Faster sqrt and sqrtf implemention for some PPC variants.
1022   Implemented by Steven Munroe.
1023 \f
1024 Version 2.7
1025
1026 * The following bugs are resolved with this release:
1027
1028   4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
1029   4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
1030   4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
1031   4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
1032   5071, 5103, 5104, 5112, 5113, 5184, 5186
1033
1034 * More checking functions: fread, fread_unlocked, open*, mq_open.
1035   Implemented by Jakub Jelinek and Ulrich Drepper.
1036
1037 * Extend fortification to C++.  Implemented by Jakub Jelinek.
1038
1039 * Implement 'm' modifier for scanf.  Add stricter C99/SUS compliance
1040   by not recognizing 'a' as a modifier when those specs are requested.
1041   Implemented by Jakub Jelinek.
1042
1043 * PPC optimizations to math and string functions.
1044   Implemented by Steven Munroe.
1045
1046 * New interfaces: mkostemp, mkostemp64.  Like mkstemp* but allow additional
1047   options to be passed.  Implemented by Ulrich Drepper.
1048
1049 * More CPU set manipulation functions.  Implemented by Ulrich Drepper.
1050
1051 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
1052   Implemented by Ulrich Drepper.
1053
1054 * Handle private futexes in the NPTL implementation.
1055   Implemented by Jakub Jelinek and Ulrich Drepper.
1056
1057 * Add support for O_CLOEXEC.  Implement in Hurd.  Use throughout libc.
1058   Implemented by Roland McGrath and Ulrich Drepper.
1059
1060 * Linux/x86-64 vDSO support.  Implemented by Ulrich Drepper.
1061
1062 * SHA-256 and SHA-512 based password encryption.
1063   Implemented by Ulrich Drepper.
1064
1065 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
1066   ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
1067   yo_NG.
1068
1069 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
1070   Implemented by Ulrich Drepper.
1071 \f
1072 Version 2.6
1073
1074 * The following bugs are resolved with this release:
1075
1076   3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1077   3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1078   3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1079   3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1080   3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1081   4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1082   4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1083   4702, 4858
1084
1085 * New Linux interfaces: epoll_pwait, sched_getcpu.
1086
1087 * New generic interfaces: strerror_l.
1088
1089 * nscd can now cache the services database.   Implemented by Ulrich Drepper.
1090 \f
1091 Version 2.5
1092
1093 * The following bugs are resolved with this release:
1094
1095   39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1096   1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1097   2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1098   2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1099   2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1100   2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1101   2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1102   3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1103   3225, 3251, 3252, 3253, 3273
1104
1105 * For Linux, the sorting of addresses returned by getaddrinfo now also
1106   handles rules 3, 4, and 7 from RFC 3484.  I.e., all rules are handled.
1107   Implemented by Ulrich Drepper.
1108
1109 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1110   Implemented by Ulrich Drepper.
1111
1112 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1113
1114 * New iconv module for MIK.  Contributed by Alexander Shopov.
1115
1116 * For sites with broken group and/or passwd database, the auto-propagate
1117   option of nscd can prevent creating ID lookup entries from the results
1118   of a name lookup and vice versa.   This usually is no problem but some
1119   site might have problems with the default behavior.
1120   Implemented by Ulrich Drepper.
1121
1122 * Iterating over entire database in NIS can be slow.  With the
1123   SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1124   to trade time for memory.  The entire database will be read at once.
1125   Implemented by Ulrich Drepper.
1126
1127 * The interfaces introduced in RFC 3542 have been implemented by
1128   Ulrich Drepper.
1129
1130 * Support for the new ELF hash table format was added by Ulrich Drepper.
1131
1132 * Support for priority inheritance mutexes added by Jakub Jelinek and
1133   Ulrich Drepper.
1134
1135 * Support for priority protected mutexes added by Jakub Jelinek.
1136
1137 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1138   or_IN, csb_PL, fy_NL, sr_ME.
1139 \f
1140 Version 2.4
1141
1142 * More overflow detection functions.
1143
1144 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1145   IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1146
1147   More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1148   IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1149   IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1150   IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1151   IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1152   by Masahide Washizawa.
1153
1154 * It is now possible to install audit libraries for the dynamic linker using
1155   LD_AUDIT.  Implemented by Ulrich Drepper.
1156
1157 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1158   longer supported.  The new NPTL implementation requires Linux 2.6 kernels.
1159   For a libc and libpthread that works well on Linux 2.4 kernels, we
1160   recommend using the stable 2.3 branch.
1161
1162 * The new function open_wmemstream acts like open_memstream,
1163   but uses a wchar_t wide character buffer.
1164
1165 * The new function ppoll is an improved version of poll, similar to pselect.
1166
1167 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1168   futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1169   renameat, unlinkat, linkat, symlinkat, readlinkat.
1170
1171 * New Linux kernel system calls: unshare,
1172   inotify_init, inotify_add_watch, inotify_rm_watch.
1173
1174 * The euidaccess function is now also known by the alias eaccess,
1175   for compatibility with some other systems.
1176
1177 * Timezone data updated to 2006b version.
1178 \f
1179 Version 2.3.6
1180
1181 * The following bugs are resolved with this release:
1182
1183   38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1184   1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1185   1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1186   1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1187   1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1188   1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1189
1190   Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1191
1192 * As of this release, GCC 4 can be used to compile the C Library.
1193
1194 * Timezone data updated to 2005m version.
1195 \f
1196 Version 2.3.5
1197
1198 * The following bugs are resolved with this release:
1199
1200   284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1201   722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1202   737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1203   777, 787, 821, 822, 823, 825
1204
1205   Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1206 \f
1207 Version 2.3.4
1208
1209 * Support for RFC 3678.  Real implementations exist only for Linux so far.
1210   Implemented by Ulrich Drepper.
1211
1212 * nscd can now cache entries persistently.  Expiring entries are reloaded.
1213   For speedups the cache can be shared in memory with client processes.
1214   Implemented by Ulrich Drepper.
1215
1216 * nscd can now perform SELinux checks.
1217   Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1218
1219 * getaddrinfo queries are now cached.  Canonical name lookup is performed
1220   efficiently.
1221   Implemented by Ulrich Drepper.
1222
1223 * The nothrow function attribute is used when headers are used by gcc when
1224   compiling C code.  This can avoid significant amounts of exception
1225   handling data.
1226
1227 * The malloc functions perform more error checking and are stricter when
1228   it comes to reacting on errors.  The default action is to terminate
1229   the process after showing an error message.  Implemented by Ulrich Drepper.
1230
1231 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1232   lookups anymore unless explicitly requested.  Implemented by Ulrich Drepper.
1233
1234 * Namespaces in ld.so are implemented.  DSOs can be loaded in separate
1235   namespaces using the new function dlmopen().  This feature is of course,
1236   like most other dynamic loading functionality, not available in statically
1237   linked applications.  Implemented by Ulrich Drepper.
1238
1239 * Low-overhead boundary checking variants of string and some stdio functions
1240   were added.  These are to be used in conjunction with a gcc patch by
1241   Jakub Jelinek which adds calls to these functions if possible.
1242   Implemented by Jakub Jelinek and Ulrich Drepper.
1243
1244 * Old code for several operating systems and machine architectures that
1245   have not been in working condition in a long time have been removed from
1246   the main source tree maintained by the GNU C Library's maintainers.
1247   These files are now reside in the separate `ports' source module
1248   that is usable as an add-on when building the library.
1249 \f
1250 Version 2.3.3
1251
1252 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1253   interrogate the dynamic linker, compatible with the Solaris interface.
1254
1255 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1256   implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1257
1258 * getifaddrs now uses the netlink interface on Linux to get its information.
1259   Implemented by Thorsten Kukuk.
1260
1261 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1262   Implemented by Ulrich Drepper.
1263
1264 * support for non-executable stacks on x86 has been added.  Changes mostly
1265   by Roland McGrath.
1266
1267 * regex is now much faster for multibyte locales.  Changes by Jakub Jelinek
1268   and Ulrich Drepper.
1269
1270 * getaddrinfo now performs destination address selection according to
1271   RFC 3484.
1272 \f
1273 Version 2.3.2
1274
1275 * Thread-safe interfaces for many functions that access locale data
1276   were added in version 2.3, but these features were omitted from NEWS.
1277   Many functions have variants with an `_l' suffix that take a `locale_t'
1278   object as a parameter rather than consulting the current locale.
1279   The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1280   create and maintain `locale_t' objects.  Additionally, the new function
1281   `uselocale' sets "the current locale" (as used by functions not so
1282   parameterized) set for an individual thread.  These features were added
1283   in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1284
1285 * The functions getresuid, getresgid, setresuid, and setresgid, which
1286   have long been available on Linux, are now declared in <unistd.h>
1287   and are now also available on the Hurd.
1288
1289 * ELF thread-local storage support (TLS) now works on x86-64.
1290
1291 * The new dynamic string token $LIB is expanded in shared library names.
1292   This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1293
1294 * Aldy Hernandez contributed complete software floating point support for
1295   PowerPC machines with no FPU.
1296
1297 * fexecve is implemented on Linux.
1298
1299 * The `btowc' function should work at least twice as fast due to
1300   specialized callbacks in the iconv modules.  Implemented by Bruno Haible.
1301
1302 * With approriate thread add-ons cancelable functions are now implemented
1303   in libc.so as well.  No need to call the function in libpthread.  This
1304   change allowed to finally disable the incorrect and expensive handling
1305   of weak definition in ld.so.
1306
1307 * Yet more PLT entries in libc.so have been removed.  We finally arrived
1308   at the bare minimum.  Startup times improved appropriately.
1309
1310 * Support for the new Linux/x86 system call interface was added.  The
1311   AT_SYSINFO auxiliary vector entry is recognized and handled.
1312 \f
1313 Version 2.3
1314
1315 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1316   charsets.
1317
1318 * iconv (the program and the interface) now accepts empty names (excluding
1319   options like //TRANSLIT) to mean "use charset of current locale".
1320
1321 * localedef can now transliterate characters in strings which are not in
1322   the provided charmap.  The information from the input locale is used.
1323
1324 * Prelinking support was added for ELF targets.  This requires additional
1325   tools and recent versions of the GNU binutils.  Contributed by Jakub Jelinek.
1326
1327 * Read-only stdio streams now use mmap to speed up operation by eliminating
1328   copying and buffer underflows.  To use add 'm' to the mode string of
1329   the fopen/fdopen/freopen call.  Implemented by Ulrich Drepper.
1330
1331 * The malloc functions were completely rewritten by Wolfram Gloger based
1332   on Doug Lea's malloc-2.7.0.c.
1333
1334 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1335   implementation of regex.
1336
1337 * Bruno Haible upgraded the iconv and locale implementation to support
1338   Unicode 3.2.
1339
1340 * Contents of the LC_* and LANG environment variables in the CEN style are
1341   not recognized anymore.   It never was used.  Change by Ulrich Drepper.
1342
1343 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1344   thread-local storage (TLS) ABI on some platforms.
1345   Changes by Ulrich Drepper.  SH support by Kaz Kojima.
1346
1347 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1348   EUC-JISX0213, and TSCII.
1349
1350 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1351   BSD-compatible interface for getting all network interface addresses.
1352   Implementation for IPv4 by Roland McGrath.
1353
1354 * Loading of locale data is faster due to the introduction of a locale
1355   archive.  Implemented by Roland McGrath and Ulrich Drepper.
1356
1357 * Startup times are significantly reduced by not using exported functions
1358   inside the library itself.  Changes by Jakub Jelinek, Roland McGrath,
1359   and Ulrich Drepper.
1360
1361 * Steven Munroe contributed a port to PowerPC64/Linux.
1362 \f
1363 Version 2.2.6
1364
1365 * The Hurd now uses the GNU libio implementation of stdio rather than the
1366   old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1367
1368 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1369   with the same behavior as the Linux system call of the same name.
1370 \f
1371 Version 2.2.5
1372
1373 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1374   128-bit long double format.
1375
1376 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1377   IBM1161, and IBM1162 charsets.
1378
1379 * Andreas Jaeger contributed a port to x86-64/Linux.
1380
1381 * Peter Bruin contributed a port to PowerPC/Hurd.
1382
1383 * libc functions using I/O streams now can handle wide-oriented streams
1384   as well.
1385
1386 * optimizations in the dynamic linker.  Binaries created by recent binutils
1387   versions start up quicker due to reduced time spent on relocations.
1388
1389 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1390 \f
1391 Version 2.2.4
1392
1393 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1394   asinh, atanh, j0 for the 128-bit long double format.
1395
1396 * Bruno Haible updated all the code handling Unicode in some form to
1397   support Unicode 3.1.
1398
1399 * Speed of regex for single-byte locales is back to previous levels.
1400   Patch by Isamu Hasegawa.
1401
1402 * Alpha, SPARC, and IA-64 now also using floating stacks.
1403
1404 * Startup time of internationalized applications greatly improved through
1405   iconv cache.  Use iconvconfig to generate the cache file.
1406   Contributed by Ulrich Drepper.
1407
1408 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1409   severe performance problems.  Patch by David Mosberger.
1410
1411 * The Hurd port got a lot more functionality like AIO, various stdio
1412   extensions, etc.  Mainly done by Roland McGrath.
1413
1414 * mtrace can now lookup symbols in shared libraries.
1415 \f
1416 Version 2.2.3
1417
1418 * Intel's IA-64 math library is largely integrated.  It provides fast and
1419   accurate implementatations for most basic and standard math functions
1420   in float, double, and long double format.
1421
1422 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1423   and asin for the 96-bit long double format and asin, log, tan for the
1424   128-bit long double format.
1425
1426 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1427   The basic double functions exist today.  Contributed by Abraham Ziv
1428   <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1429   <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1430
1431 * An asynchronous name lookup library was added.  The interface is designed
1432   after POSIX AIO.  The proposal was circulated beforehand to get comments.
1433   No negative ones came in.  Implemented by Ulrich Drepper.
1434
1435 * Port to S390/64bit contributed by Martin Schwidefsky
1436   <schwidefsky@de.ibm.com>.
1437
1438 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1439   of functions for Linux/IA-64.
1440
1441 * The RPC code is now thread safe.  Threads can now use the same service
1442   of different services at the same time.  Patch by Eric Norum
1443   <eric.norum@usask.ca> with some help by Ulrich Drepper.
1444
1445 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1446   family of functions for Linux/S390.
1447
1448 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1449   of functions for Linux/x86.
1450
1451 * Port to Linux/CRIS contributed by Axis Communications.
1452 \f
1453 Version 2.2.2
1454
1455 * Lots of headers were cleaned up.  Using the tool in the conform/ subdir
1456   we can now check for namespace violations and missing declarations.  The
1457   result is that almost all headers are now Unix-compliant (as defined in
1458   the upcoming XPG6).  The negative side is that some programs might need
1459   corrections, too, if they depend on the incorrect form of the headers in
1460   previous versions which defined too many symbols and included too many
1461   other headers.
1462
1463 * regex now handles multibyte character sets correctly.
1464   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1465
1466 * iconv (the program) does now conform to the upcoming XPG6 and handles
1467   charmaps.  Instead of the charset names the path of charmaps can be
1468   provided and the conversion happens based on this data.
1469   Contributed by Ulrich Drepper.
1470
1471 * The locale program now provides detailed information about the installed
1472   locales.  While
1473
1474     locale -a
1475
1476   only lists the names of the supported locales
1477
1478     locale -a --verbose
1479
1480   provides details such as country, language, and codeset name.
1481   Contributed by Ulrich Drepper.
1482 \f
1483 Version 2.2.1
1484
1485 * The gencat program now parses the input file according to the charset
1486   selected by the LC_CTYPE category.  This is important for stateful
1487   character sets.  To make generating catalogs easier there is a way
1488   to overwrite the charset selected by the locale: before the first
1489   message or $ quote line the catalog can contain a line like
1490
1491     $ codeset=ISO-8859-2
1492
1493   to select the charset (ISO-8859-2 in this case).
1494
1495   Implemented by Shinya Hanataka and Ulrich Drepper.
1496
1497 * New codeset conversion modules: IBM-922  (Estonia PC codeset),
1498   IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1499   Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1500
1501 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1502   <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1503
1504 * The LANGUAGE environment variable is now ignored unless the locale is
1505   changed from the default "C" locale.
1506
1507 * The usual bug fixes.
1508 \f
1509 Version 2.2
1510
1511 * Greg McGary added runtime support for bounds checking using gcc's
1512   new -fbounded-pointers option.  ix86 target is complete.  PowerPC
1513   is in progress.
1514
1515 * Thorsten Kukuk added secure mode support to nscd.
1516
1517 * The Berkeley db libraries have been removed.
1518
1519   Related, the nss_db module is now in a separate package since it
1520   obviously requires a database library being available.
1521
1522 * Wide character I/O streams implemented by Ulrich Drepper.
1523
1524 * Functions from the extended socket API added by Ulrich Drepper.
1525
1526 * Functions feenableexcept and fedisableexcept to control the
1527   behaviour of individual exceptions have been added by Andreas Jaeger.
1528
1529 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1530
1531 * The resolver code has been updated from bind 8.2.3-T5B which supports
1532   threads.  The integration was done by Andreas Jaeger, Adam D. Bradley,
1533   and Mark Kettenis.
1534
1535   This change could in some situations effect backward compatibility.  Since
1536   now `_res' is a thread-local instead of a global variable, modifying it
1537   in one thread does not have any effect in other threads.
1538
1539   The resolver library was also extended to allow IPv6 as the transport
1540   protocol for the requests.  This work was done by Stig Venaas.
1541
1542 * Compatibility code for K&R C compilers has been removed from the
1543   header files.  A ISO C compiler is needed to use the library
1544   (conforming to either C89 or C99 standard).
1545
1546 * Complete rewrite of the localedef program to support multibyte character
1547   sets.  Implement handling of ISO 14651 and ISO 14652.  Rewrite strcoll,
1548   strxfrm, wcscoll, and wcsxfrm functions.  Make isw*() functions work.
1549   Implemented by Ulrich Drepper.
1550
1551   Bruno Haible significantly improved the generation and use of the data
1552   structures for the wide character tables.
1553
1554 * Plural handling in gettext implemented by Ulrich Drepper.
1555
1556 * The utmp daemon has been removed.
1557
1558 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1559
1560 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1561   and Yutaka Niibe.
1562
1563 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1564
1565 * POSIX barriers implemented by Kaz Kylheku.
1566
1567 * POSIX spawn function family implemented by Ulrich Drepper.
1568
1569 * POSIX spinlocks are now available.
1570
1571 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1572
1573 * the configure option --enable-kernel=X.Y.Z allows to strip out
1574   compatibility for kernel versions before X.Y.Z.  This is currently only
1575   implemented for Linux.
1576
1577 * the sockaddr_in6 structure changed.  The IPv6 working group added a new
1578   field sin6_scope_id.  This means that all programs using IPv6 should be
1579   recompiled.  Don't expect binary compatibility with previous glibc
1580   versions.
1581
1582 * various conversion modules for IBM character sets contributed by
1583   Masahide Washizawa.
1584
1585 * IA-64 port by Jes Sorensen and HJ Lu.
1586 \f
1587 Version 2.1.3
1588
1589 * bug fixes
1590
1591 \f
1592 Version 2.1.2
1593
1594 * bug fixes
1595
1596 \f
1597 Version 2.1.1
1598
1599 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1600
1601 * New xdr functions are added; some rpc functions are now 64bit clean.
1602
1603 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1604
1605 * Fixed known incompatibilities with glibc 2.0.
1606
1607 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1608
1609 * Optimized a number of functions (especially the ELF dynamic loader).
1610
1611 * Update timezone data files.
1612
1613 * lots of charmaps corrections
1614
1615 * some new locale definitions and charmaps
1616
1617 \f
1618 Version 2.1
1619
1620 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1621   conform to POSIX member type requirements.  Symbol versions have been
1622   adjusted as needed within the library, and for direct use by applications,
1623   but there is potential for problems if third-party libraries use
1624   struct timeval as part of their interface.  This does not present
1625   a problem for X and other "essential" system libraries.
1626
1627 * An additional locale model to support C++ Standard Library locale
1628   model and probably more was implemented by Ulrich Drepper.
1629
1630 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1631   symbol level.
1632
1633 * Miles Bader provided the `argp' function family to support hierachical
1634   command line argument parsing, layered on top of getopt.
1635
1636 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1637
1638 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1639   numbers.
1640
1641 * scanf recognizes the %a and %A format for scanning floating point numbers.
1642
1643 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1644   information and interfaces for the available integer types.
1645
1646 * about 130 new math functions were added to implement the ISO C9x math
1647   library.
1648
1649 * the new header <complex.h> contains definitions of the complex math
1650   functions from ISO C 9X.
1651
1652 * the new header <tgmath.h> defines generic macros to use complex or
1653   real valued functions.
1654
1655 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1656
1657 * Andreas Jaeger provided a test suite for the math library.
1658
1659 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1660
1661 * Ulrich Drepper added character set conversion functions (iconv).
1662
1663 * Optimized string functions have been added.
1664
1665 * The localedata addon is now part of glibc.
1666
1667 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1668
1669 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1670   daemon for NSS (nscd).
1671
1672   Missing a better place here are some numbers on improvements.  Under
1673   Linux 2.1.125 un-tar-ing the kernel sources takes
1674
1675                                   user  system     wall
1676
1677     using local files           12.19s   6.88s   22.91s
1678
1679     using NIS                   13.92s   8.91s   26.34s
1680
1681     using NIS & nscd            10.37s   7.34s   25.30s
1682
1683     using NIS+                  27.57s  30.37s  640.46s
1684
1685     using NIS+ & nscd           10.25s   7.83s   26.51s
1686
1687     using NIS & old nscd [1]    13.83s   8.32s   29.60s
1688
1689   Keep in mind that non-namelookup related operations dominate above times.
1690   It was just a common complain that using NIS+ unpacking the kernel is
1691   horribly slow.
1692
1693   [1] The old nscd implementation is not available anymore since it was
1694   distributed with glibc up to version 2.0.98 and thus is now replaced.
1695
1696 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1697
1698 * Mark Kettenis provided a Hesiod NSS module.
1699
1700 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1701   and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1702
1703 * rcmd can now handle netgroups (Dick Streefland).
1704
1705 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1706   Bambrough.
1707
1708 * Support for the IPv6 protocol has been added to the socket API, as per the
1709   latest draft standards.
1710
1711 * Support for Linux 2.2 has been added.
1712
1713 * Interface changes relative to the latest 2.0.x release:
1714 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1715 addseverity                     NEW: Unix98
1716 alphasort64                     NEW: LFS
1717 argp_err_exit_status            NEW: argp, GNU ext
1718 argp_error                      NEW: argp, GNU ext
1719 argp_failure                    NEW: argp, GNU ext
1720 argp_help                       NEW: argp, GNU ext
1721 argp_parse                      NEW: argp, GNU ext
1722 argp_program_bug_address        NEW: argp, GNU ext
1723 argp_program_version            NEW: argp, GNU ext
1724 argp_program_version_hook       NEW: argp, GNU ext
1725 argp_state_help                 NEW: argp, GNU ext
1726 argp_usage                      NEW: argp, GNU ext
1727 authdes_create                  NEW: Secure RPC
1728 authdes_getucred                NEW: Secure RPC
1729 authdes_pk_create               NEW: Secure RPC
1730 backtrace                       NEW: GNU ext.
1731 backtrace_symbols               NEW: GNU ext.
1732 backtrace_symbols_fd            NEW: GNU ext.
1733 cacos                           NEW: ISO C 9x
1734 cacosf                          NEW: ISO C 9x
1735 cacosh                          NEW: ISO C 9x
1736 cacoshf                         NEW: ISO C 9x
1737 cacoshl                         NEW: ISO C 9x
1738 cacosl                          NEW: ISO C 9x
1739 capget                          NEW: kernel
1740 capset                          NEW: kernel
1741 carg                            NEW: ISO C 9x
1742 cargf                           NEW: ISO C 9x
1743 cargl                           NEW: ISO C 9x
1744 casin                           NEW: ISO C 9x
1745 casinf                          NEW: ISO C 9x
1746 casinh                          NEW: ISO C 9x
1747 casinhf                         NEW: ISO C 9x
1748 casinhl                         NEW: ISO C 9x
1749 casinl                          NEW: ISO C 9x
1750 catan                           NEW: ISO C 9x
1751 catanf                          NEW: ISO C 9x
1752 catanh                          NEW: ISO C 9x
1753 catanhf                         NEW: ISO C 9x
1754 catanhl                         NEW: ISO C 9x
1755 catanl                          NEW: ISO C 9x
1756 cbc_crypt                       NEW: Secure RPC
1757 ccos                            NEW: ISO C 9x
1758 ccosf                           NEW: ISO C 9x
1759 ccosh                           NEW: ISO C 9x
1760 ccoshf                          NEW: ISO C 9x
1761 ccoshl                          NEW: ISO C 9x
1762 ccosl                           NEW: ISO C 9x
1763 cexp                            NEW: ISO C 9x
1764 cexpf                           NEW: ISO C 9x
1765 cexpl                           NEW: ISO C 9x
1766 cimag                           NEW: ISO C 9x
1767 cimagf                          NEW: ISO C 9x
1768 cimagl                          NEW: ISO C 9x
1769 clearerr_locked                 REMOVED
1770 clntunix_create                 NEW: sunrpc ext
1771 clog                            NEW: ISO C 9x
1772 clog10                          NEW: ISO C 9x
1773 clog10f                         NEW: ISO C 9x
1774 clog10l                         NEW: ISO C 9x
1775 clogf                           NEW: ISO C 9x
1776 clogl                           NEW: ISO C 9x
1777 conj                            NEW: ISO C 9x
1778 conjf                           NEW: ISO C 9x
1779 conjl                           NEW: ISO C 9x
1780 cpow                            NEW: ISO C 9x
1781 cpowf                           NEW: ISO C 9x
1782 cpowl                           NEW: ISO C 9x
1783 cproj                           NEW: ISO C 9x
1784 cprojf                          NEW: ISO C 9x
1785 cprojl                          NEW: ISO C 9x
1786 creal                           NEW: ISO C 9x
1787 crealf                          NEW: ISO C 9x
1788 creall                          NEW: ISO C 9x
1789 creat64                         NEW: LFS
1790 csin                            NEW: ISO C 9x
1791 csinf                           NEW: ISO C 9x
1792 csinh                           NEW: ISO C 9x
1793 csinhf                          NEW: ISO C 9x
1794 csinhl                          NEW: ISO C 9x
1795 csinl                           NEW: ISO C 9x
1796 csqrt                           NEW: ISO C 9x
1797 csqrtf                          NEW: ISO C 9x
1798 csqrtl                          NEW: ISO C 9x
1799 ctan                            NEW: ISO C 9x
1800 ctanf                           NEW: ISO C 9x
1801 ctanh                           NEW: ISO C 9x
1802 ctanhf                          NEW: ISO C 9x
1803 ctanhl                          NEW: ISO C 9x
1804 ctanl                           NEW: ISO C 9x
1805 des_setparity                   NEW: Secure RPC
1806 ecb_crypt                       NEW: Secure RPC
1807 endutxent                       NEW: Unix98
1808 exp10                           NEW: ISO C 9x
1809 exp10f                          NEW: ISO C 9x
1810 exp10l                          NEW: ISO C 9x
1811 exp2                            NEW: ISO C 9x
1812 exp2f                           NEW: ISO C 9x
1813 exp2l                           NEW: ISO C 9x
1814 fattach                         NEW: STREAMS
1815 fdetach                         NEW: STREAMS
1816 fdim                            NEW: ISO C 9x
1817 fdimf                           NEW: ISO C 9x
1818 fdiml                           NEW: ISO C 9x
1819 feclearexcept                   NEW: ISO C 9x
1820 fegetenv                        NEW: ISO C 9x
1821 fegetexceptflag                 NEW: ISO C 9x
1822 fegetround                      NEW: ISO C 9x
1823 feholdexcept                    NEW: ISO C 9x
1824 feof_locked                     REMOVED
1825 feraiseexcept                   NEW: ISO C 9x
1826 ferror_locked                   REMOVED
1827 fesetenv                        NEW: ISO C 9x
1828 fesetexceptflag                 NEW: ISO C 9x
1829 fesetround                      NEW: ISO C 9x
1830 fetestexcept                    NEW: ISO C 9x
1831 feupdateenv                     NEW: ISO C 9x
1832 fflush_locked                   REMOVED
1833 ffsl                            NEW: GNU ext.
1834 ffsll                           NEW: GNU ext.
1835 fgetpos64                       NEW: LFS
1836 fgets_unlocked                  NEW: GNU ext.
1837 fileno_locked                   REMOVED
1838 fma                             NEW: ISO C 9x
1839 fmaf                            NEW: ISO C 9x
1840 fmal                            NEW: ISO C 9x
1841 fmax                            NEW: ISO C 9x
1842 fmaxf                           NEW: ISO C 9x
1843 fmaxl                           NEW: ISO C 9x
1844 fmin                            NEW: ISO C 9x
1845 fminf                           NEW: ISO C 9x
1846 fminl                           NEW: ISO C 9x
1847 fmtmsg                          NEW: Unix98
1848 fopen64                         NEW: LFS
1849 fputc_locked                    REMOVED
1850 fputs_unlocked                  NEW: GNU ext.
1851 fread_unlocked                  NEW: GNU ext.
1852 freopen64                       NEW: LFS
1853 fseeko                          NEW: Unix98
1854 fsetpos64                       NEW: LFS
1855 fstatfs64                       NEW: LFS
1856 fstatvfs                        NEW: Unix98
1857 fstatvfs64                      NEW: LFS
1858 ftello                          NEW: Unix98
1859 ftello64                        NEW: LFS
1860 ftruncate64                     NEW: LFS
1861 ftw64                           NEW: LFS
1862 fwrite_unlocked                 NEW: GNU ext.
1863 gai_strerror                    NEW: IPv6
1864 gamma_r                         REMOVED
1865 gammaf_r                        REMOVED
1866 gammal_r                        REMOVED
1867 getchar_locked                  REMOVED
1868 getdate                         NEW: Unix98
1869 getdate_err                     NEW: Unix98
1870 getdate_r                       NEW: GNU ext.
1871 getmsg                          NEW: STREAMS
1872 getnameinfo                     NEW: IPv6
1873 getnetname                      NEW: Secure RPC
1874 getpmsg                         NEW: STREAMS
1875 getpt                           NEW: Unix98 PTY
1876 getrlimit64                     NEW: LFS
1877 getutxent                       NEW: Unix98
1878 getutxid                        NEW: Unix98
1879 getutxline                      NEW: Unix98
1880 glob64                          NEW: GNU ext.
1881 globfree64                      NEW: GNU ext.
1882 gnu_get_libc_release            NEW: GNU ext.
1883 gnu_get_libc_version            NEW: GNU ext.
1884 grantpt                         NEW: Unix98 PTY
1885 host2netname                    NEW: Secure RPC
1886 iconv                           NEW: iconv
1887 iconv_close                     NEW: iconv
1888 iconv_open                      NEW: iconv
1889 if_freenameindex                NEW: IPv6
1890 if_indextoname                  NEW: IPv6
1891 if_nameindex                    NEW: IPv6
1892 if_nametoindex                  NEW: IPv6
1893 in6addr_any                     NEW: IPv6
1894 in6addr_loopback                NEW: IPv6
1895 inet6_isipv4mapped              NEW: IPv6
1896 isastream                       NEW: STREAMS
1897 iswblank                        NEW: GNU ext.
1898 key_decryptsession              NEW: Secure RPC
1899 key_decryptsession_pk           NEW: Secure RPC
1900 key_encryptsession              NEW: Secure RPC
1901 key_encryptsession_pk           NEW: Secure RPC
1902 key_gendes                      NEW: Secure RPC
1903 key_get_conv                    NEW: Secure RPC
1904 key_secretkey_is_set            NEW: Secure RPC
1905 key_setnet                      NEW: Secure RPC
1906 key_setsecret                   NEW: Secure RPC
1907 llrint                          NEW: ISO C 9x
1908 llrintf                         NEW: ISO C 9x
1909 llrintl                         NEW: ISO C 9x
1910 llround                         NEW: ISO C 9x
1911 llroundf                        NEW: ISO C 9x
1912 llroundl                        NEW: ISO C 9x
1913 log2                            NEW: ISO C 9x
1914 log2f                           NEW: ISO C 9x
1915 log2l                           NEW: ISO C 9x
1916 lrint                           NEW: ISO C 9x
1917 lrintf                          NEW: ISO C 9x
1918 lrintl                          NEW: ISO C 9x
1919 lround                          NEW: ISO C 9x
1920 lroundf                         NEW: ISO C 9x
1921 lroundl                         NEW: ISO C 9x
1922 lseek64                         NEW: LFS
1923 makecontext                     NEW: Unix98
1924 mempcpy                         NEW: GNU ext.
1925 mmap64                          NEW: LFS
1926 moncontrol                      REMOVED
1927 modify_ldt                      NEW: kernel
1928 nan                             NEW: ISO C 9x
1929 nanf                            NEW: ISO C 9x
1930 nanl                            NEW: ISO C 9x
1931 nearbyint                       NEW: ISO C 9x
1932 nearbyintf                      NEW: ISO C 9x
1933 nearbyintl                      NEW: ISO C 9x
1934 netname2host                    NEW: Secure RPC
1935 netname2user                    NEW: Secure RPC
1936 nexttoward                      NEW: ISO C 9x
1937 nexttowardf                     NEW: ISO C 9x
1938 nexttowardl                     NEW: ISO C 9x
1939 nftw                            NEW: Unix98
1940 nftw64                          NEW: LFS
1941 open64                          NEW: LFS
1942 passwd2des                      NEW: Secure RPC
1943 pow10                           NEW: GNU ext.
1944 pow10f                          NEW: GNU ext.
1945 pow10l                          NEW: GNU ext.
1946 pread                           NEW: Unix98
1947 pread64                         NEW: LFS
1948 printf_size                     NEW: GNU ext.
1949 printf_size_info                NEW: GNU ext.
1950 profil_counter                  REMOVED
1951 pthread_mutexattr_getkind_np    REPLACED
1952 pthread_mutexattr_setkind_np    REPLACED
1953 ptsname                         NEW: Unix98 PTY
1954 ptsname_r                       NEW: Unix98 PTY
1955 putc_locked                     REMOVED
1956 putchar_locked                  REMOVED
1957 putgrent                        NEW: GNU ext.
1958 putmsg                          NEW: STREAMS
1959 putpmsg                         NEW: STREAMS
1960 pututxline                      NEW: Unix98
1961 pwrite                          NEW: Unix98
1962 pwrite64                        NEW: LFS
1963 readdir64                       NEW: LFS
1964 readdir64_r                     NEW: LFS
1965 remquo                          NEW: ISO C 9x
1966 remquof                         NEW: ISO C 9x
1967 remquol                         NEW: ISO C 9x
1968 round                           NEW: ISO C 9x
1969 roundf                          NEW: ISO C 9x
1970 roundl                          NEW: ISO C 9x
1971 rtime                           NEW: GNU ext.
1972 scalbln                         NEW: ISO C 9x
1973 scalblnf                        NEW: ISO C 9x
1974 scalblnl                        NEW: ISO C 9x
1975 scandir64                       NEW: LFS
1976 sendfile                        NEW: kernel
1977 setcontext                      NEW: Unix98
1978 setrlimit64                     NEW: LFS
1979 setutxent                       NEW: Unix98
1980 sighold                         NEW: Unix98
1981 sigignore                       NEW: Unix98
1982 sigqueue                        NEW: POSIX.1b
1983 sigrelse                        NEW: Unix98
1984 sigset                          NEW: POSIX.1b
1985 sigtimedwait                    NEW: POSIX.1b
1986 sigwaitinfo                     NEW: POSIX.1b
1987 sincos                          NEW: GNU ext.
1988 sincosf                         NEW: GNU ext.
1989 sincosl                         NEW: GNU ext.
1990 statfs64                        NEW: LFS
1991 statvfs                         NEW: Unix98
1992 statvfs64                       NEW: LFS
1993 strcasestr                      NEW: GNU ext.
1994 strtoimax                       NEW: ISO C 9x
1995 strtoumax                       NEW: ISO C 9x
1996 strverscmp                      NEW: GNU ext.
1997 svcauthdes_stats                NEW: Secure RPC
1998 svcunix_create                  NEW: sunrpc etx
1999 svcunixfd_create                NEW: sunrpc ext
2000 swapcontext                     NEW: Unix98
2001 tcgetsid                        NEW: Unix98 PTY
2002 tdestroy                        NEW: GNU ext.
2003 tgamma                          NEW: ISO C 9x
2004 tgammaf                         NEW: ISO C 9x
2005 tgammal                         NEW: ISO C 9x
2006 tmpfile64                       NEW: LFS
2007 trunc                           NEW: ISO C 9x
2008 truncate64                      NEW: LFS
2009 truncf                          NEW: ISO C 9x
2010 truncl                          NEW: ISO C 9x
2011 umount2                         NEW: kernel
2012 unlockpt                        NEW: Unix98 PTY
2013 updwtmpx                        NEW: Unix98
2014 user2netname                    NEW: Secure RPC
2015 utmpxname                       NEW: Unix98
2016 versionsort                     NEW: GNU ext.
2017 versionsort64                   NEW: GNU ext.
2018 waitid                          NEW: Unix98
2019 wcscasecmp                      NEW: GNU ext.
2020 wcsncasecmp                     NEW: GNU ext.
2021 wcsnlen                         NEW: GNU ext.
2022 wcstoimax                       NEW: ISO C 9x
2023 wcstoll                         NEW: ISO C 9x
2024 wcstoull                        NEW: ISO C 9x
2025 wcstoumax                       NEW: ISO C 9x
2026 wcswcs                          NEW: Unix98
2027 wordexp                         NEW: POSIX.2
2028 wordfree                        NEW: POSIX.2
2029 write_profiling                 REMOVED
2030 xdecrypt                        NEW: Secure RPC
2031 xdr_authdes_cred                NEW: Secure RPC
2032 xdr_authdes_verf                NEW: Secure RPC
2033 xdr_cryptkeyarg                 NEW: Secure RPC
2034 xdr_cryptkeyarg2                NEW: Secure RPC
2035 xdr_cryptkeyres                 NEW: Secure RPC
2036 xdr_getcredres                  NEW: Secure RPC
2037 xdr_key_netstarg                NEW: Secure RPC
2038 xdr_key_netstres                NEW: Secure RPC
2039 xdr_keybuf                      NEW: Secure RPC
2040 xdr_keystatus                   NEW: Secure RPC
2041 xdr_netnamestr                  NEW: Secure RPC
2042 xdr_sizeof                      NEW: Secure RPC
2043 xdr_unixcred                    NEW: sunrpc ext
2044 xencrypt                        NEW: Secure RPC
2045 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2046 \f
2047 Version 2.0.6
2048
2049 * more bug fixes
2050
2051 \f
2052 Version 2.0.5
2053
2054 * more bug fixes
2055
2056 * inet_ntoa is thread-safe
2057
2058 * updwtmp is moved from libutil to libc
2059
2060 * rewrite of cbrt function
2061
2062 * update of timezone data
2063 \f
2064 Version 2.0.4
2065
2066 * more bug fixes
2067 \f
2068 Version 2.0.3
2069
2070 * more bug fixes
2071 \f
2072 Version 2.0.2
2073
2074 * more bug fixes
2075
2076 * add atoll function
2077
2078 * fix complex problems in Berkeley DB code
2079
2080 * fix math functions
2081 \f
2082 Version 2.0.1
2083
2084 * fixed lots of header problems (especially Linux/GNU specific)
2085
2086 * dynamic loader preserves all registers
2087
2088 * Roland McGrath provided support for handling of auxiliary objects in
2089   the ELF dynamic loader.
2090
2091 * support for parallel builds is improved
2092 \f
2093 Version 2.0
2094
2095 * GNU extensions are no longer declared by default.  To enable them you
2096   must define the macro `_GNU_SOURCE' in your program or compile with
2097   `-D_GNU_SOURCE'.
2098
2099 * The library has changed from using GNU ld symbol aliases to using weak
2100   symbols where available.  The ELF object file format supports weak
2101   symbols; GNU ld also supports weak symbols in the a.out format.  (There
2102   is also now support for other GNU ld extensions in ELF.  Use the
2103   `--with-elf' option to configure to indicate you have ELF, and
2104   `--with-gnu-ld' if using GNU ld.)  This change resulted in the deletion
2105   of many files which contained only symbol aliases, reducing the size of
2106   the source and the compiled library; many other files were renamed to
2107   less cryptic names previously occupied by the symbol alias files.
2108   There is a new header file <elf.h> for programs which operate on
2109   files in the ELF format.
2110
2111 * Converted to Autoconf version 2, so `configure' has more options.
2112   Run `configure --help' to see the details.
2113
2114 * The library can now be configured to build profiling, highly-optimized
2115   (but undebuggable), and/or shared libraries (ELF with GNU ld only).  The
2116   `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2117   `configure' enable building these extra libraries.  The shared library is
2118   built by default when using both ELF and GNU ld.  When shared libraries
2119   are enabled, the new library `-ldl' is available for arbitrary run-time
2120   loading of shared objects; its interface is defined in <dlfcn.h>.  The
2121   new header file <link.h> gives access to the internals of the run-time
2122   dynamic linker, `ld.so'.  The shell script `ldd' is similar to the
2123   application of same name on other systems and it provides information
2124   about dynamically linked binaries.
2125
2126 * The C library now provides the run-time support code for profiling
2127   executables compiled with `-pg'.  Programs can control the profiling code
2128   through the interface in <sys/gmon.h>.  The `gmon.out' files written by
2129   the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2130   the support for this file format was contributed by David Mosberger-Tang.
2131
2132 * The math code has been replaced with a math library based on fdlibm from
2133   Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2134   Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2135   functions.  The math functions now reside in a separate library,  so
2136   programs using them will need to use `-lm' their linking commands.
2137
2138 * John C. Bowman contributed optimized ix87 assembler inline functions.
2139
2140 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2141   mechanism similar to that found in Solaris 2.  This is now used for the
2142   group, passwd, hosts, networks, services, protocols, rpc, ethers,
2143   shadow, netgroup, publickey, and alias databases.  The `nsswitch.conf'
2144   file controls what services are used for each individual database.  This
2145   works by loading shared libraries with names specified in `nsswitch.conf',
2146   so service modules can be changed or added at any time without even
2147   relinking any program.  Currently there are the file, db, and NIS based
2148   NSS services available.
2149
2150 * The new functions `strtoq' and `strtouq' parse integer values from
2151   strings, like `strtol' and `strtoul', but they return `long long int' and
2152   `unsigned long long int' values, respectively (64-bit quantities).
2153
2154 * The new functions `strtof' and `strtold' parse floating-point values from
2155   strings, like `strtod', but they return `float' and `long double' values,
2156   respectively (on some machines `double' and `long double' are the same).
2157
2158 * Ulrich Drepper has contributed new implementations of the floating-point
2159   printing and reading code used in the `printf' family of functions and
2160   `strtod', `strtof', and `strtold'.  These new functions are perfectly
2161   accurate, and much faster than the old ones.
2162
2163 * The implementation of the POSIX locale model was completely rewritten by
2164   Ulrich Drepper.  This includes the new programs `localedef' and `locale'
2165   to compile the POSIX locale definition.
2166
2167 * The former dummy implementations of the strcoll and strxfrm function are
2168   now replaced by fully functional code contributed by Ulrich Drepper.  The
2169   collation information comes from the POSIX locale definitions.
2170
2171 * The new header <langinfo.h> defines an interface for accessing
2172   various locale-dependent data (using the locale chosen with `setlocale').
2173
2174 * Ulrich Drepper has contributed a new suite of functions for operation on
2175   wide-character and multibyte-character strings, in <wchar.h>;
2176   and classification and case conversion of wide characters, in <wctype.h>.
2177   These new functions are conforming to the ISO C, Amendement 1 specification.
2178
2179 * There is now a second implementation of the standard I/O library available.
2180   It comes from GNU libg++ as was written by Per Bothner, heavily modified
2181   by Hongjiu Lu and made thread safe by Ulrich Drepper.
2182
2183 * You can now use positional parameter specifications in format strings
2184   for the `printf' and `scanf' families of functions.  For example,
2185   `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2186   ``Number 6, Mr Jones''.  This is mainly useful when providing different
2187   format strings for different languages, whose grammars may dictate
2188   different orderings of the values being printed.  To support this
2189   feature, the interface for `register_printf_handler' has changed; see
2190   the header file <printf.h> for details.
2191
2192 * The `printf' and `scanf' families of functions now understand a new
2193   formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2194   to group numbers as indicated by the locale; for `scanf' and friends, this
2195   says to accept as valid only a number with all the proper grouping
2196   separators in the right places.  In the default "C" locale, numbers are
2197   not grouped; but locales for specific countries will define the usual
2198   conventions (i.e. separate thousands with `,' in the US locale).
2199
2200 * The pgrp functions have been regularized, slightly incompatibly but much
2201   less confusingly.  The core functions are now `getpgid' and `setpgid',
2202   which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2203   argument) and BSD `setpgrp' (identical to `setpgid') functions are
2204   provided for compatibility.  There is no longer an incompatible `getpgrp'
2205   with an argument declared under _BSD_SOURCE; no BSD code uses it.
2206
2207 * The new header file <fts.h> and suite of functions simplify programs that
2208   operate on directory trees.  This code comes from 4.4 BSD.
2209
2210 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2211   Parts of the code were heavily modified by Ulrich Drepper to fit in the
2212   NSS scheme used in glibc.
2213
2214 * There is a new malloc debugging hook `__memalign_hook'.
2215
2216 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2217   `unsigned int' in <sys/types.h>.  These are for compatibility only and
2218   their use is discouraged.
2219
2220 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2221   done differently, so that it works even without GNU ld.
2222
2223 * New function `euidaccess' checks allowed access to a file like `access',
2224   but using the effective IDs instead of the real IDs.
2225
2226 * The time zone data files have been updated for the latest and greatest
2227   local time conventions of the countries of the world.
2228
2229 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2230   see <dirent.h>.
2231
2232 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2233   for formatting floating-point numbers.  They are provided only for
2234   compatibility; new programs should use `sprintf' instead.  There are
2235   also equivalent function for the `long double' floating-point type and
2236   all functions also exist in a reentrant form.
2237
2238 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2239   functions for maintaining the login-record files (primarily of use to
2240   system programs such as `login'), and convenient functions for
2241   allocating and initializing a pseudo-terminal (pty) device.
2242
2243 * Ulrich Drepper has contributed new support for System V style
2244   shared memory and IPC on systems that support it.
2245
2246 * Ulrich Drepper has contributed several miscellaneous new functions found
2247   in System V: The `hsearch' family of functions provide an effective
2248   implementation of hash tables; `a64l' and `l64a' provide a very simple
2249   binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2250   number generator.
2251
2252 * Ulrich Drepper has contributed new reentrant counterparts for the
2253   `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2254
2255 * Ulrich Drepper has contributed new, highly-optimized versions of several
2256   string functions for the i486/Pentium family of processors.
2257
2258 * Ulrich Drepper has updated the Linux-specific code, based largely
2259   on work done in Hongjiu Lu's version of GNU libc for Linux.
2260   The GNU library now supports Linux versions 2.0.10 and later,
2261   using the ELF object file format (i[3456]86-*-linux).
2262
2263 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2264
2265 * David Mosberger-Tang and Richard Henderson have ported the C library
2266   to Linux/Alpha (alpha-*-linux).  Richard Henderson contributed the
2267   dynamic linking support for ELF/Alpha.
2268
2269 * Richard Henderson contributed several Alpha optimized assembler function
2270   for arithmetic and string handling.
2271
2272 * Ulrich Drepper has contributed a new set of message catalog functions to
2273   support multiple languages using the <libintl.h> interface, for use with
2274   his new package GNU gettext.  Translation volunteers have contributed
2275   catalogs of the library's messages in Spanish, German, and Korean.
2276
2277 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2278   program and the `catgets' function for reading the catalog files it
2279   creates.  (The <libintl.h> interface is preferred; we include the
2280   <nl_types.h> interface using `catgets' only for source compatibility with
2281   programs already written to use it.)
2282
2283 * New header file <values.h> gives SVID-compatible names for <limits.h>
2284   constants.
2285
2286 * Various new macros, declarations, and small header files for compatibility
2287   with 4.4 BSD.
2288
2289 * New function `group_member' is a convenient way to check if a process has
2290   a given effective group ID.
2291
2292 * When using GCC 2.7 and later, the socket functions are now declared in a
2293   special way so that passing an argument of type `struct sockaddr_in *',
2294   `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2295   `struct sockaddr *' type, does not generate a type-clash warning.
2296
2297 * New function `error' declared in header file <error.h> is a convenient
2298   function for printing error messages and optionally exiting; this is the
2299   canonical function used in GNU programs.  The new functions `err', `warn',
2300   and friends in header file <err.h> are the canonical 4.4 BSD interface for
2301   doing the same thing.
2302
2303 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2304   POSIX.2 `glob' function to do ~ and {...} expansion.
2305
2306 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2307   `clearenv' which is used in POSIX.9 is also available.
2308
2309 * New function `getsid' returns session ID number on systems that support it.
2310
2311 * We have incorporated the 4.4 BSD `db' library (version 1.85).  New header
2312   files <db.h> and <mpool.h> provide a rich set of functions for several
2313   types of simple databases stored in memory and in files, and <ndbm.h> is
2314   an old `ndbm'-compatible interface using the `db' functions.  Link with
2315   `-ldb' to get these functions.
2316
2317 * New macro `strdupa' copies a string like `strdup', but uses local stack
2318   space from `alloca' instead of dynamic heap space from `malloc'.
2319
2320 * New function `strnlen' is like `strlen' but searches only a given maximum
2321   number of characters for the null terminator.  `stpncpy', `strndup' and
2322   `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2323   function.
2324
2325 * New function `statfs' in header <sys/statfs.h>.
2326
2327 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2328   provide convenient functions for operating on blocks of null-terminated
2329   strings.
2330
2331 * A new suite of functions in <utmp.h> handle all the details of reading
2332   and writing the utmp file.
2333
2334 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2335   Thorsten Kukuk.
2336
2337 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2338   completely POSIX compliant and also implemented the extended functionality
2339   to handle alternate digit representation and alternate era date formats.
2340
2341 * Ulrich Drepper provided an implementation of the `strptime' function
2342   defined in XPG4.2 which transforms a string into a `struct tm' value.
2343
2344 * Paul Eggert provided the tzselect shell script as part of the timezone
2345   code.  The shell script makes it easy to select the correct timezone
2346   specification.
2347
2348 * The implementation of the malloc family of functions is completely replaced
2349   by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2350   The implementation uses the mmap function (if available) and it is
2351   optimized for the use in multi threaded programs.
2352
2353 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2354   functions.  This new functionality is usable by specifying a special
2355   salt string and it is compatible with implementation on *BSD systems.
2356
2357 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2358   `getsubopt' to handle second level command line options, `bsd_signal'
2359   to access BSD style `signal' functionality, the obsolete `regexp' style
2360   expression matcher.
2361
2362 * the `lchown' function is available on system which support this
2363   functionality.
2364
2365 * The implementation of the shadow password handling function was contributed
2366   by Ulrich Drepper.
2367
2368 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2369
2370 * POSIX.1g support was added.  The <sys/select.h> header is available,
2371   `isfdtype' and `pselect' are implemented.  Craig Metz contributed an
2372   implementation of `getaddrinfo'.
2373 \f
2374 Version 1.09
2375
2376 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2377
2378 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2379   friends, for parsing /etc/fstab.  This code comes from 4.4 BSD.
2380
2381 * The new function `daemon' from 4.4 BSD is useful for server programs that
2382   want to put themselves in the background.
2383
2384 * Joel Sherrill has contributed support for several standalone boards that
2385   run without an operating system.
2386
2387 * `printf', `scanf' and friends now accept a `q' type modifier for long
2388   long int as well as `ll'.  Formats using these might be `%qu' or `%lld'.
2389
2390 * All of the code taken from BSD (notably most of the math and networking
2391   routines) has been updated from the BSD 4.4-Lite release.
2392
2393 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2394
2395 * The new functions `getdomainname' and `setdomainname' fetch or change the
2396   YP/NIS domain name.  These are system calls which exist on systems which
2397   have YP (aka NIS).
2398
2399 * The time zone data files have been updated for the latest international
2400   conventions.
2401
2402 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2403   $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2404 \f
2405 Version 1.08
2406
2407 * The C library now includes support for Sun RPC, from Sun's free
2408   RPCSRC-4.0 distribution.  The `portmap', `rpcinfo', and `rpcgen' programs
2409   are included.  (There is still no support for YP.)
2410
2411 * Tom Quinn has contributed a port of the C library to SGI machines running
2412   Irix 4 (mips-sgi-irix4).
2413
2414 * The new `lockf' function is a simplified interface to the locking
2415   facilities of `fcntl', included for compatibility.
2416
2417 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2418
2419 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2420
2421 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2422   compatibility.
2423
2424 * The error message printed by `assert' for a failed assertion now includes
2425   the name of the program (if using GNU ld) and the name of the calling
2426   function (with versions of GCC that support this).
2427
2428 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2429
2430 * The library now includes the <sys/mman.h> header file and memory
2431   management functions `mmap', `munmap', `mprotect', `msync', and
2432   `madvise', on systems that support those facilities.
2433
2434 * The interface for `mcheck' has changed slightly: the function called to
2435   abort the program when an allocation inconsistency is detected now takes
2436   an argument that indicates the type of failure.  The new function
2437   `mprobe' lets you request a consistency check for a particular block at
2438   any time (checks are normally done only when you call `free' or `realloc'
2439   on a block).
2440
2441 * It is now possible to easily cross-compile the C library, building on one
2442   system a library to run on another machine and/or operating system.  All
2443   you need to do is set the variable `HOST_CC' in `configparms' to the
2444   native compiler for programs to run on the machine you are building on (a
2445   few generator programs are used on Unix systems); set `CC' to the
2446   cross-compiler.
2447
2448 * The new function `fexecve' (only implemented on the GNU system) executes
2449   a program file given a file descriptor already open on the file.
2450 \f
2451 Version 1.07
2452
2453 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2454   running OSF/1 (alpha-dec-osf1).  He says it is 75% complete.
2455
2456 * You can set the variable `libprefix' in `configparms' to specify a prefix
2457   to be prepended to installed library files; this makes it easy to install
2458   the GNU C library to be linked as `-lgnuc' or whatever.
2459
2460 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2461   copies a limited number of characters from a string, and returns the
2462   address of the last character written.
2463
2464 * You no longer need to check for whether the installed `stddef.h' is
2465   compatible with the GNU C library.  configure now checks for you.
2466
2467 * You can now define a per-stream `fileno' function to convert the
2468   stream's cookie into an integral file descriptor.
2469
2470 * ``malloc (0)'' no longer returns a null pointer.  Instead, it
2471   allocates zero bytes of storage, and returns a unique pointer which
2472   you can pass to `realloc' or `free'.  The behavior is undefined if
2473   you dereference this pointer.
2474
2475 * The C library now runs on Sony NEWS m68k machines running either
2476   NewsOS 3 or NewsOS 4.
2477
2478 * The new `syscall' function is a system-dependent primitive function
2479   for invoking system calls.  It has the canonical behavior on Unix
2480   systems, including unreliable return values for some calls (such as
2481   `pipe', `fork' and `getppid').
2482
2483 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2484   to `EAGAIN', which is the preferred name.  On systems whose kernels
2485   use two distinct codes, the C library now translates EWOULDBLOCK to
2486   EAGAIN in every system call function.
2487 \f
2488 Version 1.06
2489
2490 * The GNU C Library Reference Manual is now distributed with the library.
2491   `make dvi' will produce a DVI file of the printed manual.
2492   `make info' will produce Info files that you can read on line using C-h i
2493   in Emacs or the `info' program.
2494   Please send comments on the manual to bug-glibc-manual@gnu.org.
2495
2496 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2497
2498 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2499
2500 * Jason Merrill has contributed a port to the Sequent Symmetry running
2501   Dynix version 3 (i386-sequent-dynix).
2502
2503 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2504   ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2505
2506 * New function `memory_warnings' lets you arrange to get warnings when
2507   malloc is running out of memory to allocate, like Emacs gives you.
2508
2509 * The C library now contains the relocating allocator used in Emacs 19 for
2510   its editing buffers.  This allocator (ralloc) minimizes allocation
2511   overhead and fragmentation by moving allocated regions around whenever it
2512   needs to.  You always refer to a ralloc'd region with a "handle" (a
2513   pointer to a pointer--an object of type `void **').
2514
2515 * There is a new `printf' format: `%m' gives you the string corresponding
2516   to the error code in `errno'.
2517
2518 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2519   or `%[' conversion, but instead of filling in a fixed-sized buffer you
2520   pass, the `a' modifier says to fill in a `char **' you pass with a
2521   malloc'd string.
2522
2523 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2524   `FNM_CASEFOLD'.  `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2525   name like `foo/bar'.  `FNM_CASEFOLD' says to ignore case in matching.
2526
2527 * `mkstemp' is a traditional Unix function to atomically create and open a
2528   uniquely-named temporary file.
2529 \f
2530 Version 1.05
2531
2532 * The standard location for the file that says what the local timezone is
2533   has changed again.  It is now `/usr/local/etc/localtime' (or more
2534   precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2535
2536 * The distribution no longer contains any files with names longer than 14
2537   characters.
2538
2539 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2540   These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2541
2542 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2543 \f
2544 Version 1.04
2545
2546 * The configuration process has changed quite a bit.  The `configure'
2547   script is now used just like the configuration scripts for other GNU
2548   packages.  The `sysdeps' directory hierarchy is much rearranged.
2549   The file `INSTALL' explains the new scheme in detail.
2550
2551 * The header files no longer need to be processed into ANSI C and
2552   traditional C versions.  There is just one set of files to install, and
2553   it will work with ANSI or old C compilers (including `gcc -traditional').
2554
2555 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2556   MIPS DECStation running Ultrix 4.
2557
2558 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2559   Tom Quinn contributed the initial code.  The GNU C library can NOT yet be
2560   made itself into a shared library.
2561
2562 * Yet further improved support for the i386, running 4.3 BSD-like systems
2563   (such as Mach 3 with the Unix single-server), or System V.
2564
2565 * New function `strncasecmp' to do case-insensitive string comparison
2566   with limited length.
2567
2568 * New function `strsep' is a reentrant alternative to `strtok'.
2569
2570 * New functions `scandir' and `alphasort' for searching directories.
2571
2572 * New function `setenv' is a better interface to `putenv'.
2573
2574 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2575   function for traversing a directory tree.
2576
2577 * The GNU obstack package is now also part of the C library.
2578   The new function `open_obstack_stream' creates a stdio stream that
2579   writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2580   formatted output directly to an obstack.
2581
2582 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2583   cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2584
2585 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2586
2587 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2588   things to your strings.
2589
2590 * There are some new test programs: test-fseek, testmb, and testrand.
2591
2592 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2593   These ports are not finished, but are a good starting place for really
2594   supporting those systems.
2595
2596 * `/etc/localtime' is now the standard location for the file that says what
2597   the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2598   This follows the general principle that `/etc' is the place for all local
2599   configuration files.
2600
2601 * The C library header files now use `extern "C"' when used by the C++
2602   compiler, so the C library should now work with C++ code.
2603
2604 * The header file <bstring.h> is gone.  <string.h> now declares bcopy,
2605   bcmp, bzero, and ffs.  (Update: nowadays these functions are declared
2606   in <strings.h>.)
2607
2608 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2609   function which uses the `merge sort' algorithm, and is said to be
2610   significantly faster than the old GNU `qsort' function.  Merge sort is
2611   now the standard `qsort' function.  The new algorithm can require a lot
2612   of temporary storage; so, the old sorting function is called when the
2613   required storage is not available.
2614
2615 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2616   provides the Unix `crypt' function, plus some other entry points.
2617
2618 * The code and header files taken from 4.4 BSD have been updated with the
2619   latest files released from Berkeley.
2620 \f
2621 ----------------------------------------------------------------------
2622 Copyright information:
2623
2624 Copyright (C) 1992-2015 Free Software Foundation, Inc.
2625
2626    Permission is granted to anyone to make or distribute verbatim copies
2627    of this document as received, in any medium, provided that the
2628    copyright notice and this permission notice are preserved,
2629    thus giving the recipient permission to redistribute in turn.
2630
2631    Permission is granted to distribute modified versions
2632    of this document, or of portions of it,
2633    under the above conditions, provided also that they
2634    carry prominent notices stating who last changed them.
2635 \f
2636 Local variables:
2637 version-control: never
2638 fill-column: 76
2639 End: