diff options
Diffstat (limited to 'lib/ignore-value.h')
| -rw-r--r-- | lib/ignore-value.h | 30 |
1 files changed, 8 insertions, 22 deletions
diff --git a/lib/ignore-value.h b/lib/ignore-value.h index f021a1a..ebd6bf4 100644 --- a/lib/ignore-value.h +++ b/lib/ignore-value.h @@ -1,6 +1,6 @@ /* ignore a function return without a compiler warning - Copyright (C) 2008-2011 Free Software Foundation, Inc. + Copyright (C) 2008-2013 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 @@ -33,30 +33,16 @@ declared with attribute warn_unused_result". */ #ifndef _GL_IGNORE_VALUE_H -# define _GL_IGNORE_VALUE_H - -# ifndef _GL_ATTRIBUTE_DEPRECATED -/* The __attribute__((__deprecated__)) feature - is available in gcc versions 3.1 and newer. */ -# if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 1) -# define _GL_ATTRIBUTE_DEPRECATED /* empty */ -# else -# define _GL_ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__)) -# endif -# endif +#define _GL_IGNORE_VALUE_H /* The __attribute__((__warn_unused_result__)) feature is available in gcc versions 3.4 and newer, while the typeof feature has been available since 2.7 at least. */ -# if __GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 4) -# define ignore_value(x) ((void) (x)) -# else -# define ignore_value(x) (({ __typeof__ (x) __x = (x); (void) __x; })) -# endif - -/* ignore_value works for scalars, pointers and aggregates; - deprecate ignore_ptr. */ -static inline void _GL_ATTRIBUTE_DEPRECATED -ignore_ptr (void *p) { (void) p; } /* deprecated: use ignore_value */ +#if 3 < __GNUC__ + (4 <= __GNUC_MINOR__) +# define ignore_value(x) \ + (__extension__ ({ __typeof__ (x) __x = (x); (void) __x; })) +#else +# define ignore_value(x) ((void) (x)) +#endif #endif |