src/third_party/mozjs-45/js/src/tests/ecma_3/Array/regress-619970.js

function test() {
    delete arguments[1];
    return Array.prototype.join.call(arguments);
}
assertEq(test(1,2,3), "1,,3");
Object.prototype[1] = "ponies!!!1";
assertEq(test(1,2,3), "1,ponies!!!1,3");
reportCompare(true,true);