when setting Attr in Foo for HASH(0x8187bec) top-level pad is                   
    SCALAR(0x8186018) -> $%foo = \\'%foo';                                  
                                                                                
when init top-level pad is                                                      
    HASH(0x818bf68) -> $%bar = \{};                                         
    HASH(0x8187bec) -> $%foo = \{};                                         
                                                                                
when setting Attr in Bar for HASH(0x818bf68) top-level pad is                   
    HASH(0x818bf68) -> $%bar = \{};                                         
                                                                                
when runtime top-level pad is