1  /* Convert string to wide string.
       2     Copyright (C) 2008-2023 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 2.1 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 mbsrtowcs() and mbsnrtowcs().  */
      23  mbstate_t _gl_mbsrtowcs_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    ;