Files
kotlin-fork/compiler/testData/diagnostics/tests/override/ParentInheritsManyImplementations.kt
T
Dmitry Petrov 5d9ee7efee Java 8 rules for method overrides:
- base class method wins against a (default) interface method,
so an abstract base class method should always be implemented
in a derived class;

- interface methods clash regardless of abstract/default
with possibly undefined behavior at run-time,
so a class or interface should always define its own method
for methods inherited from multiple interfaces and not from base class;

- meaningful diagnostics for class inheriting conflicting JVM signatures.
Since no override will happen under Java 8 rules,
ACCIDENTAL_OVERRIDE is misleading for this case;

- update testData.
2015-10-12 14:12:31 +03:00

18 lines
203 B
Kotlin
Vendored

package d
interface A {
fun foo() = 1
}
interface B {
fun foo() = 2
}
open <!MANY_INTERFACES_MEMBER_NOT_IMPLEMENTED!>class C<!> : A, B {}
interface E {
fun foo(): Int
}
class D : C() {}