Structs with "impossible" fields do not decompile correctly.

[BenjaminUrquhart]

Incorrect output observed

{
    variable_struct_set(self, "(", function()
    {
        return "what";
    })
};

Expected output

{ "(": function() { return "what" } }

VM assembly
Sample data file

Additional context

It seems the Gamemaker compiler emits a call to variable_struct_set if a field has an otherwise invalid name and UA does not expect that.