print(1)           # No warning.
    print (1)          # Warning.
    print  (1)         # No warning.
    printf (1)         # Warning.
    sprintf (1)        # No warning.
    print
    (1)                # No warning.

    print (1) ||  die; # No warning.
    print (1) or  die; # No warning.
    print (1) xor die; # Warning.
    print (1) and die; # No warning.
    print (1) &&  die; # Warning.

    print (1) ==  1    # No warning.
    print (1) !=  1    # No warning.
    print (1) <=> 1    # Warning.

    print (1);  next   # No warning.
    print (1),  next   # Warning.
    print (1) | next   # No warning.
    print (1) & next   # Warning.

    print ("(")        # Warning.
    print (")")        # Warning.
    print ("1");       # No warning (trailing semi-colon).
    print (")");       # Warning (even with semi-colon).
    print ("1"); die;  # No warning.
    print ("("); die;  # Warning.