X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fignore-value.h;h=ebd6bf42f560b9213445684dfbb70a1e0722709d;hb=4779b635ef35c7b0bc4044fcb5bc746d06f158c4;hp=92f2fbca9235ee40b601a43e40d33e7b61ac9211;hpb=1602f0afed21be664fcf5c42d59db07cc22c56d6;p=gnulib.git diff --git a/lib/ignore-value.h b/lib/ignore-value.h index 92f2fbca9..ebd6bf42f 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) 2008-2012 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