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| author | Karel Zak | 2011-02-09 20:37:08 +0100 |
|---|---|---|
| committer | Karel Zak | 2011-02-09 20:40:06 +0100 |
| commit | c25dc28dff295ac707a0e8f3ed5a1f7c8b335910 (patch) | |
| tree | 5edede7f4c0f0e76387dc9f231b0c21298c8e34e /include/c.h | |
| parent | tests: fix libmount test (diff) | |
| download | kernel-qcow2-util-linux-c25dc28dff295ac707a0e8f3ed5a1f7c8b335910.tar.gz kernel-qcow2-util-linux-c25dc28dff295ac707a0e8f3ed5a1f7c8b335910.tar.xz kernel-qcow2-util-linux-c25dc28dff295ac707a0e8f3ed5a1f7c8b335910.zip | |
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 <kzak@redhat.com>
Diffstat (limited to 'include/c.h')
| -rw-r--r-- | include/c.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/c.h b/include/c.h index 4bb288758..e52514345 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 |