This code should be caught at compile time:

const class Foo
{
  Void bar(Str x := x) {}  
  Void main() { bar() }
}

Instead it fails at runtime with

java.lang.VerifyError: (class: fan/play_0/Foo, method: bar signature: ()V) 
     Accessing value from uninitialized register 1

Promoted to ticket #1191 and assigned to brian

Ticket resolved in 1.0.55

changeset