kotlin-fork/idea/testData/checker/Override.kt

package override

    trait MyTrait {
        fun foo()
    }

    abstract class MyAbstractClass {
        abstract fun bar()
    }

    open class MyClass : MyTrait, MyAbstractClass() {
        override fun foo() {}
        override fun bar() {}
    }

    class MyChildClass : MyClass() {}

    class <error>MyIllegalClass</error> : MyTrait, MyAbstractClass() {}

    class <error>MyIllegalClass2</error> : MyTrait, MyAbstractClass() {
        override fun foo() {}
    }

    class <error>MyIllegalClass3</error> : MyTrait, MyAbstractClass() {
        override fun bar() {}
    }

    class <error>MyIllegalClass4</error> : MyTrait, MyAbstractClass() {
        <error>fun foo()</error> {}
        <error>override</error> fun other() {}
    }

    class MyChildClass1 : MyClass() {
        <error>fun foo()</error> {}
        override fun bar() {}
    }