goto5.l1:30: warning: variable shadows parameter: x
goto5.l1:30: warning: variable referenced but not defined: x
foo(0)
default
foo(1)
got to label! (w = <nil>)
kept going!
got to label2!
foo(2)
got to label2!
foo(3)
got to label3 (x = <nil>, w = <nil>)!