Denis Zharkov
21 lines
524 B
Kotlin
Vendored
21 lines
524 B
Kotlin
Vendored
open class A
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class E
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abstract class Wrapper<T: A>(protected val t: T)
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class MyWrapper(a: A): Wrapper<A>(a)
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// This wrapper is not legal
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class TheirWrapper(e: E): Wrapper<<!UPPER_BOUND_VIOLATED!>E<!>>(e)
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data class Pair<out T>(val a: T, val b: T)
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fun foo(): String {
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val matrix: Pair<Wrapper<*>>
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// It's not legal to do such a thing because E is not derived from A
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// But we should not have assertion errors because of it!
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matrix = Pair(MyWrapper(A()), TheirWrapper(E()))
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return matrix.toString()
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}
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