diff options
Diffstat (limited to 'lib/unused-result.h')
| -rw-r--r-- | lib/unused-result.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/lib/unused-result.h b/lib/unused-result.h new file mode 100644 index 0000000..a49b279 --- /dev/null +++ b/lib/unused-result.h @@ -0,0 +1,39 @@ +/* unused-result.h -- macros for ensuring callers don't ignore return values + Copyright (C) 2010, 2011 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +/* Taken from coreutils' fts_.h */ +#ifndef INC_UNUSED_RESULT_H +# define INC_UNUSED_RESULT_H 1 + +# ifndef __GNUC_PREREQ +# if defined __GNUC__ && defined __GNUC_MINOR__ +# define __GNUC_PREREQ(maj, min) \ + ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) +# else +# define __GNUC_PREREQ(maj, min) 0 +# endif +# endif + +# if __GNUC_PREREQ (3,4) +# undef __attribute_warn_unused_result__ +# define __attribute_warn_unused_result__ \ + __attribute__ ((__warn_unused_result__)) +# else +# define __attribute_warn_unused_result__ /* empty */ +# endif + +#endif |