[Bug c/15170] New: Error during compilation with -O3 for 1-2-3 dimensional arrays

["ilgis at num dot uni-sb dot de" <gcc-bugzilla at gcc dot gnu dot org>]

The following two examples can compile with -O1 but fail with -O3 on gcc-3.4:

/************** File 1 **************/
void test1(int N, double A[N])
 { int i;
   for(i=0; i<N; i++)
       A[i]=i;
   return;
 }


 void test2(int N, double A[N][N], double B[N][N])
 { int i, j;
   for(i=0; i<N; i++)
     for(j=0; j<N; j++)
       A[i][j]=i+j;
   test1(10, &B[0][0]);
   return;
 }
/*********** End of File 1 ***************/

/************ File 2 ***************/
 void test2(int N, double A[N][N], double B[N][N])
 { int i, j;
   for(i=0; i<N; i++)
     for(j=0; j<N; j++)
       A[i][j]=i+j;
   return;
 }


 void test1(int N, double A[N])
 { int i;
   for(i=0; i<N; i++)
       A[i]=i;
   return;
 }

/***************** End of file 2 ***********/

PS: I so a lot of troubles with multidimensional arrays, I guess it is connected
to the bug 11392 and my comment #10 is still open.

PPS: I am sure that there are more examples in this dirrection but it is
difficult to extract them all from my not compiled code.

Sincerely

Dr. Ilghiz Ibraghimow

-- 
           Summary: Error during compilation with -O3 for 1-2-3 dimensional
                    arrays
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ilgis at num dot uni-sb dot de
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15170