semantic: is_reference_to_global_variable doesn't return expected value in specific case.

[tbashiyy]

What is this

Semantic.is_reference_to_global_variable doesn't return expected value in case of below.

js source code

Object = {}
console.log(Object);

When overriding global variable without declarations, I think this is no longer global variables.
But when checking Object identifier of console.log argument by using is_reference_to_global_variable, it returns true.

I think this is because of Object is still in root_unresolved_references.

What I want

In this case, is_reference_to_global_variable returns false.
Or I want to know another way to check whether identifier of global variable is overridden or not.