ufuzz failure

[alexlamsl]

// original code
// (beautified)
var _calls_ = 10, a = 100, b = 10, c = 0;

a++ + (a = --b + ((c = c + 1) + (a++ + {
    foo: (c = c + 1) + [ , (c = c + 1) + (+function() {
    }() || a || 3).toString(), ++b ],
    b: (c = c + 1) + (a && a.c),
    null: a++ + (23..toString() || a || 3).toString(),
    "\t": (c = c + 1) + (typeof a == "function" && --_calls_ >= 0 && a(22)),
    "-2": a++
}[typeof f0 == "function" && --_calls_ >= 0 && f0(++a, 4, a++ + this)] || 7).toString()[0 === 1 ? a : b]));

console.log(null, a, b, c, Infinity, NaN, undefined);

// uglified code
// (beautified)
var o = 10, n = 100;

n++, n = "91" + ("" + (n++ + {
    foo: 2 + [ , 3 + (n || 3).toString(), 10 ],
    b: 4 + (n && n.c),
    null: n++ + "23",
    "\t": 5 + ("function" == typeof n && 0 <= --o && n(22)),
    "-2": n++
}["function" == typeof f0 && 0 <= --o && f0(++n, 4, n++ + this)] || 7))[10], console.log(null, n, 10, 5, 1 / 0, NaN, void 0);

original result:
�[1mnull�[22m �[33mNaN�[39m �[33m10�[39m �[33m5�[39m �[33mInfinity�[39m �[33mNaN�[39m �[90mundefined�[39m

uglified result:
�[1mnull�[22m �[32m'91undefined'�[39m �[33m10�[39m �[33m5�[39m �[33mInfinity�[39m �[33mNaN�[39m �[90mundefined�[39m

minify(options):
{
  "compress": {
    "passes": 1000000,
    "unsafe": true
  },
  "toplevel": true
}