lib/c32srtombs-state.c

   1 /* Convert 32-bit wide string to string.
   2    Copyright (C) 2008-2024 Free Software Foundation, Inc.
   3    Written by Bruno Haible <bruno@clisp.org>, 2020.
   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 c32srtombs() and c32snrtombs().  */
  23 extern mbstate_t _gl_c32srtombs_state;
  24 mbstate_t _gl_c32srtombs_state
  25 /* The state must initially be in an "initial state"; so, zero-initialize it.
  26    On most systems, putting it into BSS is sufficient.  Not so on Mac OS X 10.3,
  27    see <https://lists.gnu.org/r/bug-gnulib/2009-01/msg00329.html>.
  28    When it needs an initializer, use 0 or {0} as initializer? 0 only works
  29    when mbstate_t is a scalar type (such as when gnulib defines it, or on
  30    AIX, IRIX, mingw). {0} works as an initializer in all cases: for a struct
  31    or union type, but also for a scalar type (ISO C 99, 6.7.8.(11)).  */
  32 #if defined __ELF__
  33   /* On ELF systems, variables in BSS behave well.  */
  34 #else
  35   /* Use braces, to be on the safe side.  */
  36   = { 0 }
  37 #endif
  38   ;