-test_variance_attr.nit:28,15--18: Redef warning: Expected nullable Object, as in A::_foo.
-test_variance_attr.nit:29,15--18: Redef warning: Expected nullable A, as in A::_bar.
-AB1
-AB1
-1
-B1
-1
-B1
+test_variance_attr.nit:28,15--18: Redef error: Expected nullable Object, as in A::_foo.
+test_variance_attr.nit:29,15--18: Redef error: Expected nullable A, as in A::_bar.