Fix missing unbox state in native runBlocking (Kotlin#2091)

kotlinx-coroutines-core/native/src/Builders.kt

@@ -73,7 +73,7 @@ private class BlockingCoroutine<T>(
  eventLoop?.decrementUseCount()
  }
  // now return result
- val state = state
+ val state = state.unboxState()
  (state as? CompletedExceptionally)?.let { throw it.cause }
  state as T
  }

kotlinx-coroutines-core/native/test/RunBlockingTest.kt

@@ -0,0 +1,18 @@
+/*
+ * Copyright 2016-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+package kotlinx.coroutines
+import kotlin.test.*
+
+class RunBlockingTest : TestBase() {
+
+ @Test
+ fun testIncompleteState() {
+ val handle = runBlocking {
+ coroutineContext[Job]!!.invokeOnCompletion { }
+ }
+
+ handle.dispose()
+ }
+}