recursion.lox

fun decrement_loop(name, n) {
  print name;
  print n;
  if (n == 1) return n;
  var x = n-1;
  var sum;
  var left;
  var right;
  left = decrement_loop("left", x) ;
  right = decrement_loop("right", x);
  sum = left + right;

    // General bug: relates to inline local variable declarations
    // TODO: Try to find a simpler repro
    //
    //   var sum = decrement_loop("left", x) + decrement_loop("right", x);
    // !=
    //   var sum;
    //   sum = decrement_loop("left", x) + decrement_loop("right", x);
    //
    // ... similarly ...
    //
    //   var sum;
    //   var left;
    //   var right;
    //   left = decrement_loop("left", x) ;
    //   right = decrement_loop("right", x);
    //   sum = left + right;
    // !=
    // var sum;
    // sum = decrement_loop("left", x) + decrement_loop("right", x);


  print "sum";
  print sum;
  return sum;
}

print decrement_loop("start", 3);