ufuzz failure

[alexlamsl]

// original code
//

var _calls_ = 10, a = 100, b = 10, c = 0;
c = c + 1;
L11593: {{var brake3 = 5; while (((({
3:((a/* ignore */++)),
b:((+function b(){

;
{var a_2 = function f0(){

try {(c = 1 + c, ((a && (a.var+=(("function"|2)<=(a=("c">>>({}))))))<<((c = c + 1, (-2))<=([,0][1]^23..toString())))); } catch (b) { ; } finally { ; }
{var brake8 = 5; do {(c = 1 + c, (c = c + 1, (([]^ /[a2][^e]+$/ )>(c = c + 1, 24 .toString()))));} while (((c = 1 + c, ((((-2)%-0)===((-2)!==(-1)))&(("function"*([,0].length === 2))===( /[a2][^e]+$/ |(-1)))))) && --brake8 > 0);}

}
((a++ + ( /[abc4]/.test((((c = 1 + c, (((a_2 && (a_2[(c = 1 + c, ((("function"&&22)^("function"!==(-2))),(("a"&&25. )^(false<<[,0][1]))))]=(({})===3))),(([,0].length === 2)&NaN)),(("b" + (-2))>>>("c"!=(-3)))))) || b || 5).toString()) )));}
try {((c = c + 1) + (~b)); } finally { if ((a_2)){;}
((--b) + (a_2=(c = 1 + c, ((([]<4)^(c = c + 1, 0))!=(("b" + "") - (NaN<<1))))));
 }
;

}())),
})[(typeof a == "function" && --_calls_ >= 0 && a())])) && --brake3 > 0){var brake16 = 5; do {{{var expr18 = (((((-1) - NaN)==((-3)||"a"))*(("foo"<<2)||(-0^0x26.toString())))); L11594:  for (var key18 in expr18) {c = 1 + c; var bar_2 = expr18[key18]; ;}}
{var brake20 = 5; L11595: while ((([(void a), ((c = c + 1) + (!((((false^1)||(([,0].length === 2)*"object"))>>((([,0].length === 2) - 5)^("function"<=NaN)))))), ((c = c + 1) + (b *= a)), ((--b) + ((-1))), ][((c = c + 1) + (function b(){

{ return (c = 1 + c, (bar_2 && (bar_2.var|=((bar_2 && (bar_2[((c = c + 1) + ([(c = 1 + c, ((c = c + 1, (bar_2-=(5*24 .toString())))|((bar_2+=("c" - false))^("b" + 4)))), (c = 1 + c, ((("undefined"!=5)&(c = c + 1, null)) - ((-0<(-5)) - (24 .toString()*(-1))))), (c = 1 + c, ((("a"%5) - (22!==24 .toString()))>(( /[a2][^e]+$/ <([,0].length === 2))>("function"<(-1))))), ]))]=(([]<<4)%((-1)||"a")))) - ((0^3)>>(c = c + 1, "number"))))))}
try {(c = 1 + c, (bar_2 && (bar_2[( /[abc4]/.test((((!((bar_2=(((delete (true))|("a"&[]))*((([,0].length === 2)^"a")>>("undefined"!==NaN))))))) || b || 5).toString()) )]<<=(((delete ("b"))<<("object"/"undefined"))<(("object"%-0)<<(23..toString()|"a")))))); } catch (bar_2) { ; } finally { ; }
if ((c = 1 + c, ((("number"&25. )>(bar_2 && (bar_2[(c = 1 + c, (((2 - Infinity),(({})^(-4))) + (("b"===false)/(2 - 3))))]/=(null>"object"))))|(([,0][1]>=0)^("object"^22)))))(c = 1 + c, ((bar_2 && (bar_2.a=(("c"*({}))<=(c = c + 1, []))))>=(!((false>>>"undefined"))))); else (c = 1 + c, (((5||"b")<<(null<<"number"))!=(+(([]!=="number")))));

}))])) && --brake20 > 0)c = c + 1;}
{var expr28 = ((--b) + (1 === 1 ? a : b));  for (var key28 in expr28) {{var brake29 = 5; do {{var brake30 = 5; do {(a++ + (b++));} while (((a++ + (bar_2 && bar_2.foo))) && --brake30 > 0);}} while ((((c = c + 1) + (bar_2 && bar_2[(Infinity)]))) && --brake29 > 0);}}}
{var brake32 = 5; while (((bar_2)) && --brake32 > 0){(delete (((((-5)>"a")||((-4) - "object")) - (("number" - [])/(NaN*(-1))))));
{var expr35 = (bar_2 && bar_2.a);  for (var key35 in expr35) {c = 1 + c; var b_2 = expr35[key35]; for (var brake36 = 5; ((c = 1 + c, ((( /[a2][^e]+$/ ^"undefined")===(c = c + 1, 24 .toString()))^((c = c + 1, Infinity),(1|(-5)))))) && brake36 > 0; --brake36)(c = 1 + c, ((bar_2 && (bar_2[(+function (){

;
}())]^=(((-2)!==([,0].length === 2))!==(bar_2+=("a">>this))))) - (( /[a2][^e]+$/ >>>"function")&&(24 .toString()|(-1)))));}}
var parseInt_1 = (a++ + (!function a_1(){

;
}())), bar = (1 === 1 ? a : b);
}}
}} while (((--b)) && --brake16 > 0);}}
c = c + 1;
try {var bar_1; } catch (Math) { var b_2 = (+function bar_1_1(){

{{var expr44 = ( /[abc4]/.test((((c = 1 + c, (bar_1 && (bar_1[((--b) + ( (((void a)) || 1).toString()[(++a)] ))]>>=(((2<="number")>>>(0x26.toString()!==false))^((bar_1_1=(true + 3))!==("a"<=({})))))))) || b || 5).toString()) );  for (var key44 in expr44) {{var brake45 = 5; L11596: while (((c = 1 + c, (((22||(-3)) + (parseInt_1=("number"/22))),(("undefined"!="c")!=(3<<"c"))))) && --brake45 > 0)(c = 1 + c, (((2>>"number") - ("bar"=="b"))<=((bar_1_1 && (bar_1_1[(c = 1 + c, (c = c + 1, ((-0<=4)>>>("number"&"b"))))]-=(this>>>"object")))||( /[a2][^e]+$/ ==[,0][1]))));}}}
switch (((--b) + (~a))) { 
case (typeof bar_1_1 == "function" && --_calls_ >= 0 && bar_1_1((-3), true)):
(c = 1 + c, ((("number"*(-2))||(parseInt_1 && (parseInt_1[(c = 1 + c, (((bar_2 && (bar_2.c=(2^25. ))),(""!="b"))&&(c = c + 1, (bar_1+=(4^"bar")))))]=(true/5))))!==((3||-0)||("">="object"))));
(c = 1 + c, ((("foo" + [])>(false*[,0][1]))<<((25.  - [])>>>(3>=23..toString()))));

 break;

case ( /[abc4]/.test((((c = 1 + c, (((2<<2)%([,0][1]<="undefined"))&&((22>(-2))==("object" + this))))) || b || 5).toString()) ):
(c = 1 + c, (((!(undefined))%(this,25. ))%((5^"c")|("object"<Infinity))));
(c = 1 + c, (((24 .toString()<"a")===("foo"<<2))<(c = c + 1, (b_2=("a"*(-3))))));

 break;

case (a++ + (b/* ignore */--)):

 break;

case ( (((c = 1 + c, (((2%5)>>>((-2),"object"))^(([,0][1]>([,0].length === 2))>=(5/(-2)))))) || a || 3).toString() ):
(c = 1 + c, (((1^([,0].length === 2))!=(([,0].length === 2)<<"a"))!=((bar_1_1 && (bar_1_1[(c = 1 + c, ((("b"!==2)^(4>=({})))>=(("c"^({}))!==((-4)%0x26.toString()))))]=(true|[,0][1]))) - ((-2)>=22))));

 break;
}
/*3*/return;
try {; } finally { (c = 1 + c, (((-0 + "foo")&("object"|22)),(("foo">="undefined")===(NaN!=5))));
(c = 1 + c, (((({})|(-1))/("foo" + [,0][1]))<=(((-4)=="function")>=("bar"<=Infinity))));
 }
}
return ((c = c + 1) + (typeof f0 == "function" && --_calls_ >= 0 && f0(( (((c = 1 + c, (((5>=2)&&(3,NaN))!=(("bar"!=="a") - (bar_2 && (bar_2[(c = 1 + c, (((this||null)^(([,0].length === 2)==23..toString()))|(( /[a2][^e]+$/ *"")^([,0][1] +  /[a2][^e]+$/ ))))]=([,0][1]>>>"bar"))))))) || 6).toString()[(c = 1 + c, ((("bar" - 23..toString())&&("bar"^"c"))>>(("number" + "b")!==( /[a2][^e]+$/ ^-0))))] ), ((c = c + 1) + (typeof f2 == "function" && --_calls_ >= 0 && f2(NaN, (c = 1 + c, (((""%23..toString()) + (undefined==="foo"))==(((-4)&&"function")>(parseInt_1 && (parseInt_1[(c = 1 + c, (bar_1=((("b"%[,0][1])==(23..toString()>>>(-3)))^((25. ||5)/(({})^"")))))]+=(4>>>(-4)))))))))), "bar")));
switch (((typeof f2 == "function" && --_calls_ >= 0 && f2((c = 1 + c, (((0==(-5)),("a"^({})))!==(c = c + 1, (24 .toString()===this)))), (c = 1 + c, (((null>>>"undefined")%((-1)==null)) - ((-("c")) + (([,0].length === 2)===(-2))))), [,0][1]))?(a++ + (void function (){

(c = 1 + c, (bar_1_1 && (bar_1_1.foo=(((!((-1)))|(this<<"c")) + ((({})|(-3)) - (-0>"a"))))));

}())):(a++ + (bar_1 && bar_1.in)))) { 
case (b |= a):

 break;

case ((c = c + 1) + (a/* ignore */++)):

 break;

case ((((4&&"foo")!==(false<<([,0].length === 2)))*(("number"&"number")===(this&"c")))):
if (((c = c + 1) + (bar_1_1)))L11597: {;} else {var expr63 = (c = 1 + c, ((("object"&&(-1))!==(1<=23..toString()))*((Infinity>>>[])<<(0x26.toString()<"function"))));  for (var key63 in expr63) {c = 1 + c; var NaN_1 = expr63[key63]; (c = 1 + c, ((((-1)<<[])/(-0& /[a2][^e]+$/ ))%(bar_2 && (bar_2.null=((5>>24 .toString())^(null|(-5)))))));}}
switch ((~(((("foo">>"undefined")^((-1)||undefined))>((c = c + 1, [])==((-2)&&23..toString())))))) { 
case (parseInt_1/=(c = 1 + c, (((NaN_1+=(-0^-0))|(2/3))&((undefined>>>2)^((-4)!==24 .toString()))))):
(c = 1 + c, (((""&&0x26.toString())==(4<="foo"))<<(("bar",[])*(-(NaN)))));

 break;

case (a++ + ([,0][1])):
(c = 1 + c, ((((-3)&&25. )^(({})!=="c")),((NaN_1 && (NaN_1.c=("number"&25. )))>>>("a"/4))));

 break;

case (!function (){

;
}()):
(c = 1 + c, (parseInt_1 && (parseInt_1.a=(((0 + "object") + (NaN===5))!=(("a"&2)&(+(1)))))));

 break;

case ((c = c + 1) + (++a)):

 break;
}

 break;

case ((c = c + 1) + (({
null:((a++ + ((function (){

;
})))),
undefined:((b_2 && b_2.Infinity)),
'':(((--b) + (void function b_2(){

;
}()))),
})[(b++)])):
L11598: for (var brake69 = 5; (( (((c = 1 + c, (((([,0].length === 2)/25. )<<("object"||this))%(("bar">>2)%("c"&"number"))))) || a || 3).toString() )) && brake69 > 0; --brake69)var NaN_2 = (c = 1 + c, ((("bar"&null)!==(5>>>"function")) - ((([,0].length === 2)/undefined) - ((-3) + ({})))));
switch ((a++ + ((function b_1(){

;
})()))) { 
case ( (((c = 1 + c, (((this<<24 .toString())==("function"&&"function"))|((1!="")<("b"!==(-3)))))) || a || 3).toString() ):
(c = 1 + c, (((-(0x26.toString()))>>(this>23..toString()))<=((0x26.toString()!=23..toString())|(0x26.toString()>>"bar"))));
(c = 1 + c, (((NaN!=[,0][1])===(NaN + "number"))&((NaN|NaN)*(0> /[a2][^e]+$/ ))));

/* fall-through */

case (a++ + (b--)):

 break;

default:


case (-b):
(c = 1 + c, (((parseInt_1 && (parseInt_1[(c = 1 + c, (((Infinity + null),("bar",undefined))>>>(parseInt_1=(("number"!==25. )*("a"<<"bar")))))]+=(Infinity&(-3))))>(1||[]))%((-0 - (-5))>>(delete (3)))));
(c = 1 + c, (((Infinity - ({}))>([,0][1]==0))!=(([,0][1]!=="c")<<(-0>false))));

 break;
}

 break;
}
for (var brake76 = 5; ((({
}))) && brake76 > 0; --brake76){{ return (c = 1 + c, ((parseInt_1=((+(Infinity))&("function"|1)))==(b_2 && (b_2.c+=((([,0].length === 2)&4)<=(4!=undefined))))))}
{;}
L11599: for (var brake80 = 5; ((c = 1 + c, (bar_1_1 && (bar_1_1.null-=(((c = c + 1, 0x26.toString())!==(5&24 .toString()))<((4 + 0)*([]>>>"bar"))))))) && brake80 > 0; --brake80)(c = 1 + c, (((c = c + 1, [,0][1])>(3^(-4)))&&(((-1)^23..toString())%(-0||0))));
(c = 1 + c, (((b_2 && (b_2[(c = 1 + c, ((bar_2 && (bar_2.b+=((NaN|5)/((-1)^0))))%((Infinity*4)^(0==="undefined"))))]|=((-1)/1)))===("foo"||(-5)))!=((true%25. )%([]<< /[a2][^e]+$/ ))));
}

}()), NaN = (({
Infinity:((delete ((parseInt_1 && (parseInt_1[(typeof bar_2 == "function" && --_calls_ >= 0 && bar_2(undefined, this, 2))]=(((1>>false)===(Infinity|[]))/((void (({})))>=(""<<"object")))))))),
NaN:((0 === 1 ? a : b)),
}));
c = c + 1;
 }
}

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

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

f += 1;

for (var t = 5; {
    3: a++,
    b: +function f() {
        var t = function() {
            try {
                f = 1 + f, a && (a["var"] += 2 <= (a = "c" >>> {})), f += 1, 23..toString();
            } catch (d) {}
            for (var t = 5; f = 1 + f, f += 1, f += 1, 24..toString(), f = 1 + f, !1 & "function" * (2 === [ , 0 ].length) == -1 && 0 < --t; ) {}
        }((a++, /[abc4]/.test((f = 1 + f, t && (t[(f = 1 + f, 25)] = 3 === {}), f || 5).toString())));
        try {
            f += 1;
        } finally {
            --f, f = 1 + f, t = ([] < 4 ^ (f += 1, 0)) != "b" - (I << 1);
        }
    }()
}["function" == typeof a && 0 <= --i && a()] && 0 < --t; ) {
    var n = 5;
    do {
        var r = (-1 - I == -3) * (-0 ^ 38..toString());
        for (var e in r) {
            f = 1 + f;
            var c = r[e];
        }
        for (var v = 5; [ void 0, (f += 1) + !(1 >> ((2 === [ , 0 ].length) - 5 ^ "function" <= I)), (f += 1) + (o *= a), --o - 1 ][(f += 1) + function o() {
            return f = 1 + f, c && (c["var"] |= (c && (c[(f += 1) + [ (f = 1 + f, f += 1, (c -= 5 * 24..toString()) | "b4" ^ (c += NaN)), (f = 1 + f, 
            (!0 & (f += 1, null)) - (!1 - -1 * 24..toString())), (f = 1 + f, NaN - (22 !== 24..toString()) > (!1 < (/[a2][^e]+$/ < (2 === [ , 0 ].length)))) ]] = ([] << 4) % -1)) - (3 >> (f += 1, 
            "number")));
        }] && 0 < --v; ) {
            f += 1;
        }
        var g = --o + a;
        for (var u in g) {
            var S = 5;
            do {
                for (var l = 5; a++, o++, a++ + (c && c.foo) && 0 < --l; ) {}
            } while ((f += 1) + (c && c[Infinity]) && 0 < --S);
        }
        for (var h = 5; c && 0 < --h; ) {
            var y = c && c.a;
            for (var s in y) {
                f = 1 + f;
                y[s];
                for (var N = 5; f = 1 + f, 0 === (f += 1, 24..toString()) ^ (f += 1, Infinity, -5) && 0 < N; --N) {
                    f = 1 + f, c && (c.NaN ^= -2 !== (2 === [ , 0 ].length) !== (c += "a" >> this));
                }
            }
            var b = a++ + !0;
        }
    } while (--o && 0 < --n);
}

f += 1;

try {
    var d;
} catch (k) {
    (function p() {
        var t = /[abc4]/.test((f = 1 + f, d && (d[--o + 1..toString()[++a]] >>= !1 >>> (!1 !== 38..toString()) ^ (p = 4) !== "a" <= {}) || o || 5).toString());
        for (var n in t) {
            for (var r = 5; f = 1 + f, b = NaN, 0 < --r; ) {
                f = 1 + f, p && (p[(f = 1 + f, f += 1, 1)] -= this >>> "object");
            }
        }
        switch (--o + ~a) {
          case "function" == typeof p && 0 <= --i && p(-3, !0):
            f = 1 + f, b && (b[(f = 1 + f, c && (c.c = 27), f += 1, d += 4)] = .2), f = 1 + f, 
            23..toString();
            break;

          case /[abc4]/.test((f = 1 + f, o || 5).toString()):
            f = 1 + f, undefined, Infinity, f = 1 + f, 24..toString(), f += 1, NaN;
            break;

          case a++ + o--:
            break;

          case (f = 1 + f, 2 ^ -2.5 <= ((2 === [ , 0 ].length) < 0) || a || 3).toString():
            f = 1 + f, p && (p[(f = 1 + f, (!0 ^ {} <= 4) >= (("c" ^ {}) != -4 % 38..toString()))] = 1);
        }
    })();
    var I = {
        Infinity: (b && (b["function" == typeof c && 0 <= --i && c(undefined, this, 2)] = (1 == (Infinity | [])) / !1), 
        !0),
        NaN: o
    };
    f += 1;
}

console.log(null, a, o, f, Infinity, I, undefined);

original result:
�[1mnull�[22m �[33m0�[39m �[33m10�[39m �[33m12�[39m �[33mInfinity�[39m �[90mundefined�[39m �[90mundefined�[39m

uglified result:
�[1mnull�[22m �[33m0�[39m �[33m10�[39m �[33m2�[39m �[33mInfinity�[39m �[90mundefined�[39m �[90mundefined�[39m

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