From 57214aa45319fa121378e1b3a69c85dfc71e2fc5 Mon Sep 17 00:00:00 2001
From: Vladimir Ilmov <vladimir.ilmov@jetbrains.com>
Date: Thu, 23 Apr 2020 11:11:26 +0200
Subject: [PATCH] (CoroutineDebugger) Exception if no creationStackTrace
 available

 #KT-38484 Fixed
---
 .../debugger/coroutine/proxy/CoroutineLibraryAgent2Proxy.kt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/idea/jvm-debugger/jvm-debugger-coroutine/src/org/jetbrains/kotlin/idea/debugger/coroutine/proxy/CoroutineLibraryAgent2Proxy.kt b/idea/jvm-debugger/jvm-debugger-coroutine/src/org/jetbrains/kotlin/idea/debugger/coroutine/proxy/CoroutineLibraryAgent2Proxy.kt
index a7f23dd5edf..173ac5380ae 100644
--- a/idea/jvm-debugger/jvm-debugger-coroutine/src/org/jetbrains/kotlin/idea/debugger/coroutine/proxy/CoroutineLibraryAgent2Proxy.kt
+++ b/idea/jvm-debugger/jvm-debugger-coroutine/src/org/jetbrains/kotlin/idea/debugger/coroutine/proxy/CoroutineLibraryAgent2Proxy.kt
@@ -60,7 +60,11 @@ class CoroutineLibraryAgent2Proxy(private val executionContext: DefaultExecution
         variables: List<XNamedValue>
     ): CoroutineStackFrames {
         val index = frames.indexOfFirst { it.isCreationSeparatorFrame() }
-        val restoredStackFrames = frames.take(index).map {
+        val restoredStackTraceElements = if (index >= 0)
+            frames.take(index)
+        else
+            frames
+        val restoredStackFrames = restoredStackTraceElements.map {
             SuspendCoroutineStackFrameItem(it, locationCache.createLocation(it), variables)
         }
         val creationStackFrames = frames.subList(index + 1, frames.size).mapIndexed { ix, it ->