1  /* A C macro for declaring that specific function parameters are not used.
       2     Copyright (C) 2008-2021 Free Software Foundation, Inc.
       3  
       4     This program is free software: you can redistribute it and/or modify it
       5     under the terms of the GNU General Public License as published
       6     by the Free Software Foundation; either version 3 of the License, or
       7     (at your option) any later version.
       8  
       9     This program is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     General Public License for more details.
      13  
      14     You should have received a copy of the GNU General Public License
      15     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      16  
      17  /* _GL_UNUSED_PARAMETER is a marker that can be appended to function parameter
      18     declarations for parameters that are not used.  This helps to reduce
      19     warnings, such as from GCC -Wunused-parameter.  The syntax is as follows:
      20         type param _GL_UNUSED_PARAMETER
      21     or more generally
      22         param_decl _GL_UNUSED_PARAMETER
      23     For example:
      24         int param _GL_UNUSED_PARAMETER
      25         int *(*param)(void) _GL_UNUSED_PARAMETER
      26     Other possible, but obscure and discouraged syntaxes:
      27         int _GL_UNUSED_PARAMETER *(*param)(void)
      28         _GL_UNUSED_PARAMETER int *(*param)(void)
      29   */
      30  #ifndef _GL_UNUSED_PARAMETER
      31  # define _GL_UNUSED_PARAMETER _GL_ATTRIBUTE_MAYBE_UNUSED
      32  #endif