From c25dc28dff295ac707a0e8f3ed5a1f7c8b335910 Mon Sep 17 00:00:00 2001 From: Karel Zak Date: Wed, 9 Feb 2011 20:37:08 +0100 Subject: [PATCH] include: [c.h]: add unused attribute to ignore_result() unfortunately, gcc 4.6 void fn (void) { int foo; foo = bar (); } evaluates that foo is never used. The __attribute__((unused)) is necessary... Signed-off-by: Karel Zak --- include/c.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/include/c.h b/include/c.h index 4bb2887588..e52514345b 100644 --- a/include/c.h +++ b/include/c.h @@ -25,7 +25,9 @@ # define __must_be_array(a) \ BUILD_BUG_ON_ZERO(__builtin_types_compatible_p(typeof(a), typeof(&a[0]))) -# define ignore_result(x) ({ typeof(x) __dummy = (x); (void) __dummy; }) +# define ignore_result(x) ({ \ + typeof(x) __dummy __attribute__((__unused__)) = (x); (void) __dummy; \ +}) #else /* !__GNUC__ */ # define __must_be_array(a) 0 -- 2.47.3