An issue of Array.prototype.reduceRight

[YuanWangC]

According to ES5.1 and ES6, when length of obj is 0 and initialValue(the second parameter) is assigned to be undefined, the method below should return undefined. Only when length is 0 and initialValue is not present, the method should throw an TypeError exception.

version

996bf76

command

jerryscript/build/bin/jerry testcase.js

Test case

var NISLFuzzingFunc = function(){
    var func = function(a,b){};
    var obj = [];
    print(obj.length);
    return obj.reduceRight(func, undefined);
};
var NISLCallingResult = NISLFuzzingFunc();
print(NISLCallingResult);

Output

0
TypeError: Initial value cannot be undefined.

Expected output

0
undefined