| 1 | /* A C macro for declaring that specific function parameters are not used.
|
|---|
| 2 | Copyright (C) 2008-2012 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 <http://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
|
|---|