dhcpd-pools  3.0
ISC dhcpd lease usage analyser
unused-parameter.h
Go to the documentation of this file.
1 /* A C macro for declaring that specific function parameters are not used.
2  Copyright (C) 2008-2017 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 # if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
32 # define _GL_UNUSED_PARAMETER __attribute__ ((__unused__))
33 # else
34 # define _GL_UNUSED_PARAMETER
35 # endif
36 #endif