gcc/testsuite/gcc.dg/pr41033.c

   1 /* { dg-options "-O1 -fno-strict-aliasing" } */
   2 /* PR rtl-optimization/41033 */
   3
   4 struct X {
   5   int i;
   6   int j;
   7 };
   8
   9 int foo(struct X *p, struct X *q)
  10 {
  11   p->j = 1;
  12   q->i = 0;
  13   return p->j;
  14 }
  15
  16 extern void abort (void);
  17
  18 int main()
  19 {
  20   struct X x;
  21   if (foo (&x, (struct X *)&x.j) != 0)
  22     abort ();
  23   return 0;
  24 }