/* A C macro for declaring that specific function parameters are not used.

   Copyright (C) 2008-2019 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify it

   under the terms of the GNU Lesser General Public License as published

   by the Free Software Foundation; either version 2.1 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License

   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */

/* _GL_UNUSED_PARAMETER is a marker that can be appended to function parameter

   declarations for parameters that are not used.  This helps to reduce

   warnings, such as from GCC -Wunused-parameter.  The syntax is as follows:

       type param _GL_UNUSED_PARAMETER

   or more generally

       param_decl _GL_UNUSED_PARAMETER

   For example:

       int param _GL_UNUSED_PARAMETER

       int *(*param)(void) _GL_UNUSED_PARAMETER

   Other possible, but obscure and discouraged syntaxes:

       int _GL_UNUSED_PARAMETER *(*param)(void)

       _GL_UNUSED_PARAMETER int *(*param)(void)

 */

#ifndef _GL_UNUSED_PARAMETER

# if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)

#  define _GL_UNUSED_PARAMETER __attribute__ ((__unused__))

# else

#  define _GL_UNUSED_PARAMETER

# endif

#endif