ufuzz failure

[alexlamsl]

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

function f0() {
    {
        var brake1 = 5;
        while ((c = c + 1) + (c = c + 1, ([ , 0 ].length === 2 || -3) <= 25 + "object") && --brake1 > 0) {
            try {
                var a = (c = c + 1) + b--, bar = (c = c + 1) + ((c = c + 1) + void function() {
                    var async_2;
                }() ? b = a : a++ + (b = a));
            } catch (b) {}
        }
    }
}

var a_1 = f0();

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

// uglified code
// (beautified)
var t = 10, c = 0;

(function f0() {
    for (var n, o = 5; (c += 1) + (c += 1, (2 === [ , 0 ].length || -3) <= "25object") && 0 < --o; ) {
        try {
            n = (c += 1) + t--, c = c + 1 + 1, t = n;
        } catch (n) {}
    }
})(), console.log(null, 100, t, c, Infinity, NaN, void 0);

original result:
null 100 56 22 Infinity NaN undefined

uglified result:
null 100 52 22 Infinity NaN undefined

// reduced test case (output will differ)

// (beautified)
var b;

function f0() {
    var brake1;
    var a = b, bar = console.log() ? b = a : a++ + (b = a);
}

f0();

console.log(b);
// output: 
// NaN
// 
// minify: 
// undefined
// 
// options: {
//   "compress": {
//     "hoist_vars": true,
//     "keep_infinity": true,
//     "passes": 1000000,
//     "unsafe": true
//   },
//   "keep_fargs": true,
//   "keep_fnames": true,
//   "toplevel": true,
//   "mangle": {
//     "v8": true
//   },
//   "output": {
//     "v8": true
//   },
//   "validate": true
// }

minify(options):
{
  "compress": {
    "hoist_vars": true,
    "keep_infinity": true,
    "passes": 1000000,
    "unsafe": true
  },
  "keep_fargs": true,
  "keep_fnames": true,
  "toplevel": true,
  "mangle": {
    "v8": true
  },
  "output": {
    "v8": true
  }
}

Suspicious compress options:
  conditionals
  passes
  reduce_vars
  side_effects
  unused