ufuzz failure

[alexlamsl]

// original code
//

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



function f0(foo, bar_2){




function f1(b, a_2, a_2){




if (((c = c + 1) + (b))); else {var brake3 = 5; while (( (((--b) + (typeof f2 == "function" && --_calls_ >= 0 && f2((c = 1 + c, ((("foo"^true)^(b && (b[(c = 1 + c, (((2*"number")<=("c"%(-5)))/((22&&"object")>(bar_2 && (bar_2[(c = 1 + c, (!((((-3), /[a2][^e]+$/ )|([,0][1]>="a")))))]+=(([,0].length === 2)/(-4)))))))]+=("c"||(-3)))))*((23..toString() - 1)^("a"=="function")))), ([,0].length === 2), (c = 1 + c, (((NaN<"bar")/(25. &&24 .toString()))*(((-3)<<"b")|(Infinity + "bar"))))))) || 8).toString()[(bar_2)] ) && --brake3 > 0)return (((foo=((this%(-4))!==(false<=2)))<<(("">>>24 .toString())%(0x26.toString()<="a"))));}

}
var c_2 = f1("function");
function f2(arguments, foo){




{var expr5 = ((c = c + 1) + (arguments=(a/* ignore */++)));  for (var key5 in expr5) {c = 1 + c; var foo = expr5[key5]; ;}}

}
;
function f3(c_2_1, b){




;

}
var foo_1 = f3(3, (-4), (delete (((+(("number"!==this)))^((3??(-3))||((-0)^NaN))))));

}
var b_2 = f0((b <<= a), 0, (-3));

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

// !!! uglify failed !!!
Error: init must have single declaration
    at AST_ForIn._validate (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:833:58)
    at AST_ForIn.validate (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:415:38)
    at AST_ForIn.ctor.transform (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:509:22)
    at eval (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2705:25)
    at List (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:103:23)
    at do_list (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2704:16)
    at eval (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2786:21)
    at descend_scope (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:14007:17)
    at TreeTransformer.eval [as before] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:13610:17)
    at AST_Defun.eval [as transform] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2887:31)
    at AST_Defun.ctor.transform (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:507:34)
    at eval (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2705:25)
    at List (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:103:23)
    at do_list (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2704:16)
    at eval (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2786:21)
    at descend_scope (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:14007:17)
    at TreeTransformer.eval [as before] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:13610:17)
    at AST_Defun.eval [as transform] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2887:31)
    at AST_Defun.ctor.transform (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:507:34)
    at AST_Defun.eval [as drop_unused] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:14051:14)
    at Compressor.eval [as before] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:6570:13)
    at AST_Defun.eval [as transform] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2887:31)
    at AST_Defun.ctor.transform (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:507:34)
    at eval (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2705:25)
    at List (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:103:23)
    at do_list (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2704:16)
    at eval (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2718:21)
    at Compressor.eval [as before] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:6563:5)
    at AST_Toplevel.eval [as transform] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2887:31)
    at AST_Toplevel.ctor.transform (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:507:34)
    at Compressor.compress (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:6603:21)
    at Object.minify (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:24586:57)
    at /Users/runner/work/UglifyJS/UglifyJS/test/ufuzz/index.js:2564:32
    at Array.forEach (<anonymous>)
    at Object.<anonymous> (/Users/runner/work/UglifyJS/UglifyJS/test/ufuzz/index.js:2556:20)
    at Module._compile (node:internal/modules/cjs/loader:1126:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1180:10)
    at Module.load (node:internal/modules/cjs/loader:1004:32)
    at Function.Module._load (node:internal/modules/cjs/loader:839:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
    at node:internal/main/run_main_module:17:47

// reduced test case (output will differ)

// (beautified)
function f0() {
    function f1(b) {
        if (b) {} else {
            var brake3 = 0;
            while (0 + (0(f2 == 0) && f2()) && --brake3) {
                return 0;
            }
        }
    }
    var c_2 = f1("function");
    function f2() {
        for (var key5 in 0) {
            expr5;
        }
    }
}
// minify error: Error: init must have single declaration
//     at AST_ForIn._validate (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:833:58)
//     at AST_ForIn.validate (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:415:38)
//     at AST_ForIn.ctor.transform (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:509:22)
//     at eval (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2705:25)
//     at List (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:103:23)
//     at do_list (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2704:16)
//     at eval (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2786:21)
//     at descend_scope (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:14007:17)
//     at TreeTransformer.eval [as before] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:13610:17)
//     at AST_Defun.eval [as transform] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2887:31)
//     at AST_Defun.ctor.transform (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:507:34)
//     at eval (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2705:25)
//     at List (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:103:23)
//     at do_list (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2704:16)
//     at eval (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2786:21)
//     at descend_scope (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:14007:17)
//     at TreeTransformer.eval [as before] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:13610:17)
//     at AST_Defun.eval [as transform] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2887:31)
//     at AST_Defun.ctor.transform (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:507:34)
//     at AST_Defun.eval [as drop_unused] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:14051:14)
//     at Compressor.eval [as before] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:6570:13)
//     at AST_Defun.eval [as transform] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2887:31)
//     at AST_Defun.ctor.transform (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:507:34)
//     at eval (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2705:25)
//     at List (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:103:23)
//     at do_list (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2704:16)
//     at eval (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2718:21)
//     at Compressor.eval [as before] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:6563:5)
//     at AST_Toplevel.eval [as transform] (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:2887:31)
//     at AST_Toplevel.ctor.transform (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:507:34)
//     at Compressor.compress (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:6603:21)
//     at Object.minify (eval at <anonymous> (/Users/runner/work/UglifyJS/UglifyJS/tools/node.js:1:1), <anonymous>:24586:57)
//     at test_minify (/Users/runner/work/UglifyJS/UglifyJS/test/reduce.js:815:22)
//     at reduce_test (/Users/runner/work/UglifyJS/UglifyJS/test/reduce.js:636:16)
//     at log (/Users/runner/work/UglifyJS/UglifyJS/test/ufuzz/index.js:2270:23)
//     at /Users/runner/work/UglifyJS/UglifyJS/test/ufuzz/index.js:2653:80
//     at Array.forEach (<anonymous>)
//     at Object.<anonymous> (/Users/runner/work/UglifyJS/UglifyJS/test/ufuzz/index.js:2556:20)
//     at Module._compile (node:internal/modules/cjs/loader:1126:14)
//     at Object.Module._extensions..js (node:internal/modules/cjs/loader:1180:10)
//     at Module.load (node:internal/modules/cjs/loader:1004:32)
//     at Function.Module._load (node:internal/modules/cjs/loader:839:12)
//     at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
//     at node:internal/main/run_main_module:17:47
// options: {
//   "compress": {
//     "passes": 1000000,
//     "sequences": 1000000,
//     "unsafe": true,
//     "unsafe_Function": true,
//     "unsafe_math": true,
//     "unsafe_proto": true,
//     "unsafe_regexp": true
//   },
//   "output": {
//     "v8": true
//   },
//   "validate": true
// }

minify(options):
{
  "compress": {
    "passes": 1000000,
    "sequences": 1000000,
    "unsafe": true,
    "unsafe_Function": true,
    "unsafe_math": true,
    "unsafe_proto": true,
    "unsafe_regexp": true
  },
  "output": {
    "v8": true
  }
}

Suspicious compress options:
  booleans
  collapse_vars
  conditionals
  dead_code
  evaluate
  inline
  join_vars
  keep_fargs
  loops
  passes
  pure_getters
  reduce_funcs
  reduce_vars
  side_effects
  unsafe
  unused