1*4ce1b016SDaniel Fojt /* A C macro for declaring that specific function parameters are not used. 2*4ce1b016SDaniel Fojt Copyright (C) 2008-2020 Free Software Foundation, Inc. 3*4ce1b016SDaniel Fojt 4*4ce1b016SDaniel Fojt This program is free software: you can redistribute it and/or modify it 5*4ce1b016SDaniel Fojt under the terms of the GNU General Public License as published 6*4ce1b016SDaniel Fojt by the Free Software Foundation; either version 3 of the License, or 7*4ce1b016SDaniel Fojt (at your option) any later version. 8*4ce1b016SDaniel Fojt 9*4ce1b016SDaniel Fojt This program is distributed in the hope that it will be useful, 10*4ce1b016SDaniel Fojt but WITHOUT ANY WARRANTY; without even the implied warranty of 11*4ce1b016SDaniel Fojt MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12*4ce1b016SDaniel Fojt General Public License for more details. 13*4ce1b016SDaniel Fojt 14*4ce1b016SDaniel Fojt You should have received a copy of the GNU General Public License 15*4ce1b016SDaniel Fojt along with this program. If not, see <https://www.gnu.org/licenses/>. */ 16*4ce1b016SDaniel Fojt 17e54473e5SJohn Marino /* _GL_UNUSED_PARAMETER is a marker that can be appended to function parameter 18e54473e5SJohn Marino declarations for parameters that are not used. This helps to reduce 19e54473e5SJohn Marino warnings, such as from GCC -Wunused-parameter. The syntax is as follows: 20e54473e5SJohn Marino type param _GL_UNUSED_PARAMETER 21e54473e5SJohn Marino or more generally 22e54473e5SJohn Marino param_decl _GL_UNUSED_PARAMETER 23e54473e5SJohn Marino For example: 24e54473e5SJohn Marino int param _GL_UNUSED_PARAMETER 25e54473e5SJohn Marino int *(*param)(void) _GL_UNUSED_PARAMETER 26e54473e5SJohn Marino Other possible, but obscure and discouraged syntaxes: 27e54473e5SJohn Marino int _GL_UNUSED_PARAMETER *(*param)(void) 28e54473e5SJohn Marino _GL_UNUSED_PARAMETER int *(*param)(void) 29e54473e5SJohn Marino */ 30e54473e5SJohn Marino #ifndef _GL_UNUSED_PARAMETER 31e54473e5SJohn Marino # if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7) 32e54473e5SJohn Marino # define _GL_UNUSED_PARAMETER __attribute__ ((__unused__)) 33e54473e5SJohn Marino # else 34e54473e5SJohn Marino # define _GL_UNUSED_PARAMETER 35e54473e5SJohn Marino # endif 36e54473e5SJohn Marino #endif 37