1 files changed, 14 insertions, 1 deletions
diff --git a/kotlinx-coroutines-core/common/src/intrinsics/Cancellable.kt b/kotlinx-coroutines-core/common/src/intrinsics/Cancellable.kt
index 173f0afb..f5b96a8d 100644
--- a/kotlinx-coroutines-core/common/src/intrinsics/Cancellable.kt
+++ b/kotlinx-coroutines-core/common/src/intrinsics/Cancellable.kt
@@ -49,6 +49,19 @@ private inline fun runSafely(completion: Continuation<*>, block: () -> Unit) {
     try {
         block()
     } catch (e: Throwable) {
-        completion.resumeWith(Result.failure(e))
+        dispatcherFailure(completion, e)
     }
 }
+
+private fun dispatcherFailure(completion: Continuation<*>, e: Throwable) {
+    /*
+     * This method is invoked when we failed to start a coroutine due to the throwing
+     * dispatcher implementation or missing Dispatchers.Main.
+     * This situation is not recoverable, so we are trying to deliver the exception by all means:
+     * 1) Resume the coroutine with an exception, so it won't prevent its parent from completion
+     * 2) Rethrow the exception immediately, so it will crash the caller (e.g. when the coroutine had
+     *    no parent or it was async/produce over MainScope).
+     */
+    completion.resumeWith(Result.failure(e))
+    throw e
+}