gcc/testsuite/gcc.dg/20030324-1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O -fstrength-reduce -fstrict-aliasing -fforce-mem -fgcse" } */
   3
   4 /* PR optimization/10087 */
   5 /* Contributed by Peter van Hoof <p.van-hoof@qub.ac.uk> */
   6
   7 extern void abort(void);
   8
   9 void b(int*,int*);
  10
  11 typedef struct {
  12     double T1;
  13     char c;
  14 } S;
  15
  16 int main(void)
  17 {
  18   int i,j;
  19   double s;
  20
  21   S x1[2][2];
  22   S *x[2] = { x1[0], x1[1] };
  23   S **E = x;
  24
  25   for( i=0; i < 2; i++ )
  26     for( j=0; j < 2; j++ )
  27       E[j][i].T1 = 1;
  28
  29   for( i=0; i < 2; i++ )
  30     for( j=0; j < 2; j++ )
  31       s = E[j][i].T1;
  32
  33   b(&j,&i);
  34   if (s != 1)
  35     abort ();
  36   return 0;
  37 }
  38
  39 void b(int *i, int *j) {}