gcc/testsuite/gcc.dg/torture/pr71987.c

/* PR tree-optimization/71987 */

int a, b, *c, *d;

short fn1 (int p1)
{
  return a ? p1 : a;
}

void fn2 ()
{
  int e, *f = &e;
  b = fn1 (d != &e);
  c = f;
}

int main ()
{
  fn2 ();
  return 0;
}