1 // https://issues.dlang.org/show_bug.cgi?id=2374
6 fail_compilation/fail23745.d(21): Error: undefined identifier `UndefinedType`
7 fail_compilation/fail23745.d(14): Error: function `fun` does not override any function, did you mean to override `fail23745.A.fun`?
8 fail_compilation/fail23745.d(21): Function `fail23745.A.fun` contains errors in its declaration, therefore it cannot be correctly overriden
21 void fun(UndefinedType);