1  /* { dg-do compile } */
       2  /* { dg-options "-O -Wuninitialized -ftrivial-auto-var-init=zero" } */
       3  
       4  typedef _Complex float C;
       5  C foo(int cond)
       6  {
       7    C f;
       8    __imag__ f = 0;
       9    if (cond)
      10      {
      11        __real__ f = 1;
      12        return f;
      13      }
      14    return f;	/* { dg-warning "may be used" "unconditional" } */
      15  }