------- Comment #1 from pinskia at gmail dot com 2008-04-07 07:10 -------
Subject: Re: New: Wrong CCP -- yielding wrong results at O1 and above
Sent from my iPhone
On Apr 7, 2008, at 0:06, "xinliangli at gmail dot com"
<[EMAIL PROTECTED]
> wrote:
> // Test case: should print 0 but it prints 10 when compiled at -O
> or -O2. The
> culprit is very likely ccp1.
I don't think it should t used uninitialized if *flag is true and both
I and j is less than zero which is true in this case.
>
>
> #include <stdio.h>
> int g;
> int foo(int i, int j, int* flag)
> {
>
> int t;
>
> if (i > 0 || j > 0)
> {
> t = 10;
> *flag = 1;
> }
>
> if (*flag)
> g+= t;
> }
>
> int main()
> {
> int flag = 1;
> g = 0;
>
> foo(-1,-1,&flag);
>
> printf("g = %d \n",g );
>
> return g;
> }
>
>
> --
> Summary: Wrong CCP -- yielding wrong results at O1 and above
> Product: gcc
> Version: 4.4.0
> Status: UNCONFIRMED
> Severity: normal
> Priority: P3
> Component: middle-end
> AssignedTo: unassigned at gcc dot gnu dot org
> ReportedBy: xinliangli at gmail dot com
>
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35856
>
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35856
