bug700.check

来自「JAVA 语言的函数式编程扩展」· CHECK 代码 · 共 5 行

bug700.scala:6: error: method foobar in trait Foo is accessed from super. It may not be abstract unless it is overridden by a member declared `abstract' and `override'
  def foobar: unit = super.foobar
                           ^
one error found