gcc/testsuite/gdc.test/fail_compilation/fail10806.d

   1 /*
   2 TEST_OUTPUT:
   3 ---
   4 fail_compilation/fail10806.d(12): Error: function `fail10806.Class.clone` incompatible covariant types `First()` and `Second()`
   5 ---
   6 */
   7
   8 interface First { First clone(); }
   9 interface Second { Second clone(); void call(); }
  10
  11 class Class : First, Second {
  12   override Class clone() { return this; }
  13   override void call() { }
  14 }
  15
  16 void main() {
  17   (cast(Second) new Class).clone().call();
  18 }