ufuzz failure

[alexlamsl]

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

const [ NaN_2 ] = [ a = [ ((c = c + 1) + {
    in: --b + (typeof f1 == "function" && --_calls_ >= 0 && f1`${typeof foo === "special"}`),
    [(c = c + 1) + (typeof a == "function" && --_calls_ >= 0 && a()) ? 1 % 23..toString() - (/[a2][^e]+$/ >>> [ , 0 ][1]) | true + "" >>> (undefined == 4) : --b + (a && typeof a.set == "function" && --_calls_ >= 0 && a.set("function", --b, "foo"))]: a++ + /[abc4]/.test((undefined || b || 5).toString())
} || 9).toString()[b *= a] ] ];

NaN_2 && NaN_2.then;

a++ + ((c = c + 1) + (3 >= "undefined" > (NaN_2 && ({
    0: NaN_2[c = 1 + c, (1 % undefined && ("b" || 5)) >> ([] >>> undefined >> (/[a2][^e]+$/ != true))]
} = {
    0: /[a2][^e]+$/ > false
})) !== ("b" >>> 25 || -true)) || 4).toString()[(c = c + 1) + "bar"];

c = c + 1;

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

// uglified code
// (beautified)
var o, n = 10, t = 0, f = o = [ ("" + ((t += 1) + {
    in: --n + ("function" == typeof f1 && f1`${"special" == typeof foo}`),
    [(t += 1) + !1 ? 1 : --n + !1]: 100 + /[abc4]/.test((n || 5).toString())
} || 9))[n *= 101] ];

f && f.then, t += 1, f && ({
    0: f[t = 1 + t, 0]
} = {
    0: !1
}), console.log(null, ++o, n, t = t + 1 + 1, Infinity, NaN, void 0);

original result:
null 1 909 6 Infinity NaN undefined

uglified result:
null NaN 909 6 Infinity NaN undefined

// reduced test case (output will differ)

// (beautified)
var a;

const [ NaN_2 ] = [ a = [] ];

a++ + ({
    0: NaN_2[0]
} = {
    0: 1
});

console.log(a);
// output: 1
// 
// minify: 2
// 
// options: {
//   "compress": {
//     "hoist_vars": true,
//     "keep_infinity": true,
//     "passes": 1000000,
//     "unsafe": true
//   },
//   "keep_fargs": true,
//   "keep_fnames": true,
//   "module": false,
//   "toplevel": 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,
  "module": false,
  "toplevel": true,
  "output": {
    "v8": true
  }
}

Suspicious compress options:
  collapse_vars
  pure_getters
  reduce_vars
  side_effects
  unsafe
  varify

Suspicious options:
  toplevel