gcc/testsuite/gcc.dg/torture/pr27184.c

   1 /* Copyright 2006 Free Software Foundation */
   2
   3 /* Make sure a and a1 alias each other.
   4    Incomplete array types used to not be unified, which broke aliasing.  */
   5
   6 /* { dg-do run } */
   7
   8 typedef long atype[];
   9 typedef long atype1[];
  10 int NumSift (atype *a, atype1 *a1)
  11 {
  12   (*a)[0] = 0;
  13   (*a1)[0] = 1;
  14   return (*a)[0];
  15 }
  16 int main(void)
  17 {
  18   long a[2];
  19   if (!NumSift(&a, &a))
  20     __builtin_abort ();
  21   return 0;
  22 }