smbfs bug introduced at smbfs_vnops.c:1.58
Jens Schweikhardt
schweikh at schweikhardt.net
Sun Apr 10 04:09:02 PDT 2005
On Sun, Apr 10, 2005 at 11:24:17AM +0200, Ulrich Spoerlein wrote:
# On Sun, 10.04.2005 at 11:51:21 +0900, takawata at jp.freebsd.org wrote:
# > This is caused by uninitialized vp.
#
# The compiler should warn about this. But something fishy is going on ...
#
# foo.c:
# int main(void) {
# int a;
# a+=1;
# return (0);
# }
Not so fishy. No warning because -O completely optimizes 'a' away. Try
this instead:
$ cat foo.c
int main(void) {
int a;
a+=1;
return a;
}
$ gcc -O -W -Wall -Wuninitialized -Winit-self foo.c
foo.c: In function `main':
foo.c:2: warning: 'a' might be used uninitialized in this function
Regards,
Jens
--
Jens Schweikhardt http://www.schweikhardt.net/
SIGSIG -- signature too long (core dumped)
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