Breaks recursive IIFE code

[forivall]

(contrived example, based on code i was unminifying)

function e(t) {
  function n() {}
  var e = 'foo';
  var c = [1, 2, 3];
  (function t(e, a, n) {
    console.log(e);
    (n < a.length) && t(e, a, n + 1)
  })(n, c);
}

on "safe" safety level, this is unminified to

function e(t) {
  function n() {}
  var e = 'foo';
  var c = [1, 2, 3];
  (function t() {
    var e = n;
    var a = c;
    var n;
    console.log(e);
    if (n < a.length) {
      t(e, a, n + 1);
    }
  })();
}

in which the n is now shadowed and is not available in the iife, and the recursion is broken

[bakkot]

Thanks for the report, that's definitely a bug!