js/src/jit-test/tests/arguments/spread-redefine-length.js


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function foo() {
    arguments.length = 2;
    return bar(...arguments);
}

function bar() {
    var result = 0;
    for (var x of arguments) {
        result += x;
    }
    return result;
}

var sum = 0;
for (var i = 0; i < 100; i++) {
    sum += foo(1,2,3,4,5,6);
}
assertEq(sum,300);