ufuzz failure

[alexlamsl]

// original code
//

var _calls_ = 10, a = 100, b = 10, c = 0;






if (((c = c + 1) + (((c = c + 1) + (b/* ignore */--)) ? ((--b) + (a && a.set)) : ((--b) + (a))))){var brake2 = 5; do {var c_2 = ((c = c + 1) + ([((c = c + 1) + (b += a)), ((c = c + 1) + (b += a)), ((c = c + 1) + ((-0) in [])), ((c = c + 1) + (c_2))].set)), b_1 = (((b_1_2, a) => {




{var foo_1 = function f0(Infinity_1){




function f1(bar_2, NaN_2){




(c = 1 + c, (a && (a.b=(((23..toString()||null)*(undefined^""))>=((24 .toString()<<0)&([,0][1] - "bar"))))));

}
var a = f1([], ((--b) + (b_1 && b_1.value)), ((--b) + (++b)));

}
((24 .toString()));}
{var await = function f2(){




L25676: for (var brake7 = 5; ( /[abc4]/.test(((--/* ignore */b) || b || 5).toString()) ) && brake7 > 0; --brake7){var expr8 = ((--b) + (({
null: (c = 1 + c, ((foo_1=((this>="object")/(([,0].length === 2) + 1))),((""/(-5)) - ((-2),25. )))),
set c(b_1_2_2){




;
this.foo>>=((-5)<(-0));
},
}).get));  for (var key8 in expr8) {c = 1 + c; var bar_1 = expr8[key8]; ;}}

}
`${((--b) + (+((((b_1/=("object"<=(-2)))&&(({})*1))>=(( /[a2][^e]+$/ ||([,0].length === 2))<=(b_1 && (b_1[(c = 1 + c, ((("bar"^"foo")>>((-2)!=""))^(("c"^false)&&("a"<"function"))))]=("number"==="a"))))))))}\\`;}
{


var a = (({
1.5: ([(c = 1 + c, (c = c + 1, ((2*2)||(this%0))))]),
Infinity: ("undefined"),
}));
return (a++ + (typeof f2 == "function" && --_calls_ >= 0 && f2((-1))));
c = c + 1;
for (var brake14 = 5; (b /= a) && brake14 > 0; --brake14)try {{


(c = 1 + c, ((!((23..toString()%4)))>>>(("function"&&0x26.toString())%([,0][1]^"undefined"))));
} } catch (bar_2) { 


{var expr18 = (c = 1 + c, (((a+=( /[a2][^e]+$/ &&"function"))===((-4)&0))|(("foo"*false)===(([,0].length === 2)%"number"))));  for (var [ key18 ] in expr18) {(c = 1 + c, (bar_2 && (bar_2[((b = a))]&=((a && ({ a: a.then } = { a: ((~(23..toString()))>=(null<5)) }))<(await=((4,"undefined")%(delete (undefined))))))));}}
for (var brake20 = 5; (c = 1 + c, ((c = c + 1, (b_1_2 && (b_1_2[(c = 1 + c, (void (((a && (a[(c = 1 + c, (b_1 && (b_1.done=(((-(24 .toString())) - (24 .toString()>null))==(((-4)>=Infinity)&&(false%"foo"))))))]=("number"&&"object")))&&(4=="")))))]=(24 .toString()<="bar"))))||(([,0][1]|(-4))<=(1<="foo")))) && brake20 > 0; --brake20)(c = 1 + c, (((NaN^2)!==(4,(-3)))<((5>"b")*("object"^ /[a2][^e]+$/ ))));
 } finally { 


switch ((c = 1 + c, (foo_1 && (foo_1.NaN%=((((-5)==([,0].length === 2))>>(c = c + 1,  /[a2][^e]+$/ ))&((false<23..toString())&(3|"object"))))))) { 
case (c = 1 + c, (((false|[,0][1])>=(2^({})))>>>(a && (a.NaN^=(((-5)>>NaN)==(true<false)))))):
;
 break;

case (c = 1 + c, (((Infinity&&[,0][1])==(24 .toString()&&[])) + (([,0][1]^0x26.toString()) + ([,0][1]!=24 .toString())))):
;
 break;

case (c = 1 + c, (((3<<4)^("a"*1))^((4<="undefined")|("foo" + null)))):
;
 break;

case (c = 1 + c, (await && (await.get|=((delete ((NaN|22)))<<((1<<22)^("undefined"||(-5))))))):
;
 break;
}
c = c + 1;
 }
}
;
{var a_1 = function f3(){




;
var a = ("a" in [(c = 1 + c, ((((-0)>undefined)<<(""===1))==((([,0].length === 2)&this)<=([,0][1]<<Infinity))))]), yield = ( (([,0][1] in ({
NaN: (c = 1 + c, ((([]>>>"b")>(5^""))===((1*this) + (1^0)))),
async: (c = 1 + c, ((((-5) + 0x26.toString())!=(c_2 && (c_2[(c = 1 + c, (b_1 && (b_1[(++/* ignore */a)]*=(((false!==undefined)&&(Infinity&&0))===(~(("object"==false)))))))]=(undefined<Infinity))))^(((-5) - 22)^( /[a2][^e]+$/ &"undefined")))),
})) || 1).toString()[(a++ + (({
})))] );

}
((({
...(typeof f3 == "function" && --_calls_ >= 0 && f3(...[])),
NaN: (b = a),
}).c),  /[a2][^e]+$/ );}

}));} while (( /[abc4]/.test((((typeof (a++ + (b_1 && b_1[(1 === 1 ? a : b)])))) || b || 5).toString()) ) && --brake2 > 0);}
(b_1 && b_1.a);

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

// !!! uglify failed !!!
Error: body must be empty if value exists
    at AST_Arrow._validate (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:1067:41)
    at AST_Arrow.validate (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:415:38)
    at AST_Arrow.ctor.transform (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:509:22)
    at AST_Arrow.eval [as hoist_properties] (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:14875:14)
    at Compressor.eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:6548:14)
    at AST_Arrow.eval [as transform] (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2884:31)
    at AST_Arrow.ctor.transform (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:507:34)
    at eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2833:33)
    at Compressor.eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:6559:5)
    at AST_Assign.eval [as transform] (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2884:31)
    at AST_Assign.ctor.transform (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:507:34)
    at eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2702:25)
    at List (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:103:23)
    at do_list (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2701:16)
    at eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2810:28)
    at Compressor.eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:6559:5)
    at AST_Sequence.eval [as transform] (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2884:31)
    at AST_Sequence.ctor.transform (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:507:34)
    at eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2727:61)
    at Compressor.eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:6559:5)
    at AST_For.eval [as transform] (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2884:31)
    at AST_For.ctor.transform (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:507:34)
    at eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2748:31)
    at Compressor.eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:6559:5)
    at AST_If.eval [as transform] (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2884:31)
    at AST_If.ctor.transform (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:507:34)
    at eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2702:25)
    at List (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:103:23)
    at do_list (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2701:16)
    at eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2715:21)
    at Compressor.eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:6559:5)
    at AST_Toplevel.eval [as transform] (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2884:31)
    at AST_Toplevel.ctor.transform (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:507:34)
    at Compressor.compress (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:6599:21)
    at Object.minify (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:24458:57)
    at /home/runner/work/UglifyJS/UglifyJS/test/ufuzz/index.js:2564:32
    at Array.forEach (<anonymous>)
    at Object.<anonymous> (/home/runner/work/UglifyJS/UglifyJS/test/ufuzz/index.js:2556:20)
    at Module._compile (module.js:653:30)
    at Object.Module._extensions..js (module.js:664:10)
    at Module.load (module.js:566:32)
    at tryModuleLoad (module.js:506:12)
    at Function.Module._load (module.js:498:3)
    at Function.Module.runMain (module.js:694:10)
    at startup (bootstrap_node.js:204:16)
    at bootstrap_node.js:625:3

// reduced test case (output will differ)

// (beautified)
var b_1 = a => {
    0`${b_1 /= 0}\\`;
    var a = {
        1.5: c
    };
    return a++;
    a[0] = 0;
};

b_1.a;
// minify error: Error: body must be empty if value exists
//     at AST_Arrow._validate (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:1067:41)
//     at AST_Arrow.validate (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:415:38)
//     at AST_Arrow.ctor.transform (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:509:22)
//     at AST_Arrow.eval [as hoist_properties] (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:14875:14)
//     at Compressor.eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:6548:14)
//     at AST_Arrow.eval [as transform] (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2884:31)
//     at AST_Arrow.ctor.transform (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:507:34)
//     at eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2773:49)
//     at Compressor.eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:6559:5)
//     at AST_VarDef.eval [as transform] (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2884:31)
//     at AST_VarDef.ctor.transform (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:507:34)
//     at eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2702:25)
//     at List (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:103:23)
//     at do_list (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2701:16)
//     at eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2769:28)
//     at Compressor.eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:6559:5)
//     at AST_Var.eval [as transform] (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2884:31)
//     at AST_Var.ctor.transform (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:507:34)
//     at eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2702:25)
//     at List (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:103:23)
//     at do_list (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2701:16)
//     at eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2715:21)
//     at Compressor.eval (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:6559:5)
//     at AST_Toplevel.eval [as transform] (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:2884:31)
//     at AST_Toplevel.ctor.transform (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:507:34)
//     at Compressor.compress (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:6599:21)
//     at Object.minify (eval at <anonymous> (/home/runner/work/UglifyJS/UglifyJS/tools/node.js:18:1), <anonymous>:24458:57)
//     at test_minify (/home/runner/work/UglifyJS/UglifyJS/test/reduce.js:815:22)
//     at reduce_test (/home/runner/work/UglifyJS/UglifyJS/test/reduce.js:636:16)
//     at log (/home/runner/work/UglifyJS/UglifyJS/test/ufuzz/index.js:2270:23)
//     at /home/runner/work/UglifyJS/UglifyJS/test/ufuzz/index.js:2653:80
//     at Array.forEach (<anonymous>)
//     at Object.<anonymous> (/home/runner/work/UglifyJS/UglifyJS/test/ufuzz/index.js:2556:20)
//     at Module._compile (module.js:653:30)
//     at Object.Module._extensions..js (module.js:664:10)
//     at Module.load (module.js:566:32)
//     at tryModuleLoad (module.js:506:12)
//     at Function.Module._load (module.js:498:3)
//     at Function.Module.runMain (module.js:694:10)
//     at startup (bootstrap_node.js:204:16)
//     at bootstrap_node.js:625:3
// 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:
  arrows
  dead_code
  hoist_props
  passes
  reduce_vars
  sequences
  side_effects
  unused

Suspicious options:
  keep_fnames