ufuzz failure

[alexlamsl]

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

function f0(a_2, foo_1, foo_1_2) {
    {
        var parseInt_2 = function f1(Infinity_1, a_1, undefined) {
            {
                var b = {
                    length: a++ + void ((foo_1 += -2 ^ 4 ^ "" + "undefined") - !-2 % ("foo" << "undefined")),
                    var: !function() {
                    }(),
                    b: (c = c + 1) + (typeof f1 == "function" && --_calls_ >= 0 && f1((c = 1 + c, (/[a2][^e]+$/ == 24..toString()) <= (a_1 && (a_1[(c = 1 + c, 
                    (c = c + 1, Infinity << 22) >>> ("foo" / 23..toString() << (Infinity_1 && (Infinity_1[(c = 1 + c, 
                    ("bar" % [] ^ 24..toString() !== [ , 0 ][1]) >= ((Infinity ^ 3) & (foo_1_2 && (foo_1_2.undefined = 25 << "bar"))))] = -0 ^ 4))))] = "bar" !== 22)) >= ((a_2 && (a_2.foo = 38..toString() % /[a2][^e]+$/)) ^ (25 ^ 23..toString())))))
                };
                {
                    var brake4 = 5;
                    L161215: do {
                        c = c + 1;
                    } while (+b && --brake4 > 0);
                }
            }
            (c = c + 1) + (Infinity_1 && Infinity_1.Infinity);
        }(+function() {
            {
                var expr7 = [ --b + ((3 ^ [ , 0 ].length === 2) + (23..toString() < -4) | ({} | 38..toString() | "c" << "")), --b + /[a2][^e]+$/, (c = c + 1) + (b ^= a), ++b, (c = c + 1) + (typeof f2 == "function" && --_calls_ >= 0 && f2((c = 1 + c, 
                foo_1 && (foo_1.var = (foo_1 -= (parseInt_2 += "a" < "undefined") < (foo_1_2 && (foo_1_2.NaN >>>= -2 & 25))) >= (38..toString() <= "a") << ({} | -4))), (c = 1 + c, 
                foo_1_2 <<= (1 > "b" | /[a2][^e]+$/ >>> 0) >> (foo_1 |= (undefined ^ 0) >> "bar" + "a")), (c = 1 + c, 
                (parseInt_2 && (parseInt_2[(c = 1 + c, (5 < [] && (foo_1 = 24..toString() || true)) + ([] !== true) % (-3 == 1))] /= {} <= "c")) == (NaN & 23..toString()) === (("foo", 
                "a") && -2 !== "")))) ][a++ + b--];
                for (var key7 in expr7) {
                    {
                        var brake8 = 5;
                        L161216: while ((c = c + 1) + ++a && --brake8 > 0) {
                            c = 1 + c, foo_1_2 = "undefined" * -2 >> (2 == 2) ^ (foo_1_2 && (foo_1_2[("c" === "undefined" && [ , 0 ][1] >>> [ , 0 ][1]) <= (2 >= 23..toString()) >> (-3 ^ [ , 0 ].length === 2)] *= (parseInt_2 && (parseInt_2[(c = 1 + c, 
                            delete (undefined % "c" % ("c" < 22)))] = 24..toString() ^ 23..toString())) >= 4 * 3));
                            c = 1 + c, (c = c + 1, "undefined") ^ (foo_1 = -0 > 22) || foo_1 && (foo_1[[ (c = 1 + c, 
                            (true - 3 == "function" >> "c") - (c = c + 1, a_2 = [ , 0 ][1] << 4)), (c = 1 + c, 
                            (foo_1 && (foo_1[(c = 1 + c, (null % -3, "function" >>> "object") <= (false << {} === -"bar"))] = ({}, 
                            -1))) << (-2 ^ "bar") != (c = c + 1, "foo", NaN)) ]] += (null != this, "foo" / 3));
                            c = 1 + c, (4 === "number" == (a_2 = 4 | "function")) + (-1 >>> 2 >>> (4 == 38..toString()));
                        }
                    }
                }
            }
            try {
                {
                    return --b + {
                        undefined: (c = 1 + c, [ , 0 ][1] * "number" * (-4 | 25) - !("function" != -1))
                    }.in;
                }
            } catch (a_2) {
                {
                    var expr15 = foo_1_2 = (c = 1 + c, (-2 >= true) % (1 != [ , 0 ][1]) == (foo_1 && (foo_1.null = -2 + -1)) >= (false >= ([ , 0 ].length === 2)));
                    for (var key15 in expr15) {
                        c = 1 + c;
                        var undefined_2 = expr15[key15];
                        L161217: {
                        }
                    }
                }
                for (var brake17 = 5; ((c = 1 + c, (([ , 0 ][1] ^ [ , 0 ].length === 2) >= (25 === [])) % ((-0 ^ 23..toString()) + ("object" === -2))) || 3).toString()[(c = 1 + c, 
                (("number" || "undefined") && "foo" >= true) <= (foo_1 && (foo_1[(c = 1 + c, "number" << -2 >> (this ^ "function") != +(true >> "")) ? (c = 1 + c, 
                0 > "number" !== (a_2 = -5 >= 0) ^ 25 == 2 != "object" % {}) : (c = 1 + c, 4 !== 0 === (24..toString() && "c") && 1 % 23..toString() > (-3 < "function"))] = ("a" !== "object") * (3 << -0))))] && brake17 > 0; --brake17) {
                    var brake18 = 5;
                    while ((c = 1 + c, ((c = c + 1, 2) == (-4 && "foo")) + (c = c + 1, -3 < "number")) && --brake18 > 0) {
                        c = 1 + c, (foo_1 && (foo_1[(c = c + 1) + (b = a)] = 2 << 24..toString() == undefined / "a")) <= ("undefined" & []) % (38..toString() !== true);
                    }
                }
            }
        }());
    }
    var undefined = a_2;
}

var foo_1 = f0(null);

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

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

function f0(v, u, t) {
    var e = function n(f, o) {
        a++, u += -6, c += 1, 0 <= --_calls_ && n((c = 1 + c, !1 <= (o && (o[(c = 1 + c, 
        c += 1, 0 >>> (NaN << (f && (f[(c = 1 + c, (3 & (t && (t.undefined = 25))) <= 1)] = 4))))] = !0)) >= (14 ^ (v && (v.foo = NaN)))));
        for (var r = 5; c += 1, +m && 0 < --r; ) {}
        c += 1, f && f.Infinity;
    }(+function() {
        var n = [ 38 + --b, --b + /[a2][^e]+$/, (c += 1) + (b ^= a), ++b, (c += 1) + ("function" == typeof f2 && 0 <= --_calls_ && f2((c = 1 + c, 
        u && (u.var = (u -= (e += !0) < (t && (t.NaN >>>= 24))) >= !0 << -4)), (c = 1 + c, 
        t <<= 0 >> (u |= (0 ^ d) >> "bara")), (c = 1 + c, 0 == (e && (e[(c = 1 + c, NaN)] /= !0)) == 1))) ][a++ + b--];
        for (var f in n) {
            for (var o = 5; (c += 1) + ++a && 0 < --o; ) {
                c = 1 + c, t = 0 ^ (t && (t[!0] *= 12 <= (e && (e[(c = 1 + c, !0)] = 15)))), c = 1 + c, 
                c += 1, "undefined" ^ (u = !1) || u && (u[[ (c = 1 + c, !1 - (c += 1, v = 0)), (c = 1 + c, 
                (u && (u[(c = 1 + c, !0)] = -1)) << -2 != (c += 1, NaN)) ]] += NaN), c = 1 + c, 
                v = 4;
            }
        }
        try {
            return --b + {
                undefined: (c = 1 + c, NaN)
            }.in;
        } catch (n) {
            var r = (c = 1 + c, t = 0 == !1 <= (u && (u.null = -3)));
            for (var N in r) {
                c = 1 + c;
            }
            for (var i = 5; ("" + (c = 1 + c, 1))[(c = 1 + c, !1 <= (u && (u[(c = 1 + c, 0 >> ("function" ^ this) != 1 ? (c = 1 + c, 
            0 != (n = !1) ^ !0) : (c = 1 + c, !1))] = 3)))] && 0 < i; --i) {
                for (var l = 5; c = 1 + c, ("foo" == (c += 1, 2)) + (c += 1, !1) && 0 < --l; ) {
                    c = 1 + c, u && (u[(c += 1) + (b = a)] = 2 << "24" == d / "a");
                }
            }
        }
    }()), d = v;
}

var foo_1 = f0(null);

console.log(null, a, b, c, 1 / 0, NaN, void 0);

original result:
�[1mnull�[22m �[33m112�[39m �[33m107�[39m �[33m46�[39m �[33mInfinity�[39m �[33mNaN�[39m �[90mundefined�[39m

uglified result:
evalmachine.<anonymous>:2
var _calls_=10,a=100,b=10,c=0;function f0(v,u,t){var e=function n(f,o){a++,u+=-6,c+=1,0<=--_calls_&&n((c=1+c,!1<=(o&&(o[(c=1+c,c+=1,0>>>(NaN<<(f&&(f[(c=1+c,(3&(t&&(t.undefined=25)))<=1)]=4))))]=!0))>=(14^(v&&(v.foo=NaN)))));for(var r=5;c+=1,+m&&0<--r;);c+=1,f&&f.Infinity}(+function(){var n=[38+--b,--b+/[a2][^e]+$/,(c+=1)+(b^=a),++b,(c+=1)+("function"==typeof f2&&0<=--_calls_&&f2((c=1+c,u&&(u.var=(u-=(e+=!0)<(t&&(t.NaN>>>=24)))>=!0<<-4)),(c=1+c,t<<=0>>(u|=(0^d)>>"bara")),(c=1+c,0==(e&&(e[(c=1+c,NaN)]/=!0))==1)))][a+++b--];for(var f in n)for(var o=5;(c+=1)+ ++a&&0<--o;)c=1+c,t=0^(t&&(t[!0]*=12<=(e&&(e[(c=1+c,!0)]=15)))),c=1+c,c+=1,"undefined"^(u=!1)||u&&(u[[(c=1+c,!1-(c+=1,v=0)),(c=1+c,(u&&(u[(c=1+c,!0)]=-1))<<-2!=(c+=1,NaN))]]+=NaN),c=1+c,v=4;try{return--b+{undefined:(c=1+c,NaN)}.in}catch(n){var r=(c=1+c,t=0==!1<=(u&&(u.null=-3)));for(var N in r)c=1+c;for(var i=5;(""+(c=1+c,1))[(c=1+c,!1<=(u&&(u[(c=1+c,0>>("function"^this)!=1?(c=1+c,0!=(n=!1)^!0):(c=1+c,!1))]=3)))]&&0<i;--i)for(var 

ReferenceError: m is not defined
    at n (evalmachine.<anonymous>:2:243)

minify(options):
{
  "compress": {
    "keep_fargs": false,
    "passes": 1000000,
    "sequences": 1000000,
    "unsafe": true,
    "unsafe_Function": true,
    "unsafe_math": true,
    "unsafe_proto": true,
    "unsafe_regexp": true
  }
}