LayoutTests/js/script-tests/dfg-dead-unreachable-code-with-chain-of-dead-unchecked-nodes.js

description(
"Tests that code that is dead, unreachable, and contains a chain of nodes that use each other in an untyped way doesn't result in the IR getting corrupted."
);

function foo(a) {
    function bar(p) {
        if (p) {
            var x = a; // It's dead and unreachable, and it involves a GetScopeVar(GetScopeRegisters(GetMyScope())).
        }
        return 5;
    }
    return bar;
}

dfgShouldBe(foo(0), "foo(42)(false)", "5");