bug1010.check

来自「JAVA 语言的函数式编程扩展」· CHECK 代码 · 共 7 行

bug1010.scala:14: error: type mismatch;
 found   : MailBox#Message
 required: _3.in.Message where val _3: Actor
   unstable.send(msg) // in.Message becomes unstable.Message, but that's ok since Message is a concrete type member
                 ^
one error found