ufuzz failure

[alexlamsl]

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

function f0(bar, a_2) {
    {
        return [ 1 === 1 ? a : b, typeof f0 == "function" && --_calls_ >= 0 && f0(), [ (!"foo" != (a_2 = 4 | 2)) < (-4 >> true !== (-4 == "")), a_2, +function a_2() {
            var a_2;
            var b_1 = (c = c + 1) + (a_2 && a_2[c = 1 + c, b_1 += (NaN || Infinity) > (NaN === 24..toString()) ^ ((c = c + 1, 
            this) | (b_1 && (b_1[c = 1 + c, ("number" & 0) > ("number" < NaN) & (38..toString() ^ -5 ^ (c = c + 1, 
            "function"))] = [] + 4)))]);
            c = c + 1;
        }() ].a, !a ][b ^= a];
    }
    for (var brake5 = 5; --b + void a && brake5 > 0; --brake5) {}
}

var Infinity_2 = f0(Infinity_2 && typeof Infinity_2.length == "function" && --_calls_ >= 0 && Infinity_2.length(), -3);

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

// uglified code
// (beautified)
var i = 10, o = 100, a = 10, e = 0;

var n = function f(n, t) {
    return [ o, 0 <= --i && f(), [ (0 != (t = 6)) < !0, 6, +function t() {
        var n = (e += 1) + 6[e = 1 + e, n += (NaN || Infinity) > (NaN === 24..toString()) ^ (e += 1, 
        this | (n && (n[e = 1 + e, "number" < NaN < 0 & (-5 ^ 38..toString() ^ (e += 1, 
        "function"))] = [] + 4)))];
        e += 1;
    }() ].a, !o ][a ^= o];
}(n && "function" == typeof n.length && 0 <= --i && n.length(), -3);

console.log(null, o, a, e, Infinity, NaN, undefined);

original result:
null 100 110 22 Infinity NaN undefined

uglified result:
null 100 110 44 Infinity NaN undefined

// reduced test case (output will differ)

// (beautified)
function f0(a_2) {
    return [ a_2 = 0, function a_2() {
        var a_2;
        console.log(a_2);
    }() ];
}

f0();
// output: undefined
// 
// minify: 0
// 
// options: {
//   "ie8": true,
//   "toplevel": true
// }

minify(options):
{
  "ie8": true,
  "toplevel": true
}

Suspicious compress options:
  evaluate
  reduce_vars

Suspicious options:
  ie8