-Runtime error: Abstract method `a` called on `FooBar` (alt/base_attr_abstract_alt3.nit:18)
-1
-2
-100
-101
-100
+alt/base_attr_abstract_alt3.nit:19,24--31: Error: `abstract` attributes cannot have an initial value.
+alt/base_attr_abstract_alt3.nit:37,12--13: Error: no property `Baz::b=` is inherited. Remove the `redef` keyword to define a new property.