abstract.scala:5 error: method bar cannot be accessed in A.this.T
 because its instance type ()A.this.T#T contains a malformed type: A.this.T#T
  def foo1: A = bar().bar();
                     ^
abstract.scala:6 error: type mismatch;
 found   : A
 required: A.this.T
  def foo2: T = bar().baz();
                         ^
abstract.scala:8 error: method bar cannot be accessed in A
 because its instance type ()A#T contains a malformed type: A#T
  def foo4: A = baz().bar();
                     ^
abstract.scala:9 error: type mismatch;
 found   : A
 required: A.this.T
  def foo5: T = baz().baz();
                         ^
four errors found