| /* | |
| * Copyright 2010-2023 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license | |
| * that can be found in the LICENSE file. | |
| */ | |
| @file:OptIn(kotlinx.cinterop.ExperimentalForeignApi::class) | |
| import kotlinx.cinterop.* | |
| import kotlin.test.* | |
| abstract class C { | |
| abstract fun foo(x: Int): CPointer<*>? | |
| } | |
| class CImpl : C() { | |
| override fun foo(x: Int) = null | |
| } | |
| fun box(): String { | |
| val c: C = CImpl() | |
| assertNull(c.foo(42)) | |
| return "OK" | |
| } | |