root/maint/gnulib/lib/wcsrtombs-state.c

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   1 /* Convert wide string to string.
   2    Copyright (C) 2008-2021 Free Software Foundation, Inc.
   3    Written by Bruno Haible <bruno@clisp.org>, 2008.
   4 
   5    This file is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU Lesser General Public License as
   7    published by the Free Software Foundation; either version 3 of the
   8    License, or (at your option) any later version.
   9 
  10    This file is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU Lesser General Public License for more details.
  14 
  15    You should have received a copy of the GNU Lesser General Public License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  17 
  18 #include <config.h>
  19 
  20 #include <wchar.h>
  21 
  22 /* Internal state used by the functions wcsrtombs() and wcsnrtombs().  */
  23 mbstate_t _gl_wcsrtombs_state
  24 /* The state must initially be in the "initial state"; so, zero-initialize it.
  25    On most systems, putting it into BSS is sufficient.  Not so on Mac OS X 10.3,
  26    see <https://lists.gnu.org/r/bug-gnulib/2009-01/msg00329.html>.
  27    When it needs an initializer, use 0 or {0} as initializer? 0 only works
  28    when mbstate_t is a scalar type (such as when gnulib defines it, or on
  29    AIX, IRIX, mingw). {0} works as an initializer in all cases: for a struct
  30    or union type, but also for a scalar type (ISO C 99, 6.7.8.(11)).  */
  31 #if defined __ELF__
  32   /* On ELF systems, variables in BSS behave well.  */
  33 #else
  34   /* Use braces, to be on the safe side.  */
  35   = { 0 }
  36 #endif
  37   ;

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