gcc/testsuite/gcc.dg/pr43670.c

   1 /* PR debug/43670 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O -ftree-vrp -fcompare-debug" } */
   4
   5 extern void abort (void);
   6
   7 typedef struct { double T1; } S;
   8
   9 void
  10 foo (void)
  11 {
  12   int i, j;
  13   double s;
  14
  15   S y[2][2];
  16   S *x[2] = { y[0], y[1] };
  17   S **p = x;
  18
  19   for (i = 0; i < 2; i++)
  20     for (j = 0; j < 2; j++)
  21       p[j][i].T1 = 1;
  22
  23   for (i = 0; i < 2; i++)
  24     for (j = 0; j < 2; j++)
  25       s = p[j][i].T1;
  26
  27   if (s != 1)
  28     abort ();
  29 }