lkml.org 
[lkml]   [2005]   [Mar]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: Do not misuse Coverity please
Date
Jean Delvare wrote:

> v = p->field;
> if (!p) return;
>
> can be seen as equivalent to
>
> if (!p) return;
> v = p->field;

Heck, no.

You're missing the side-effect of a null pointer dereference crash (for
p->field) (even though v is unused before the return). The optimizer is
not allowed to make exceptions go away as a result of the hoisting.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-04-06 13:31    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site