From ed56aa3e0dba4532b780213266afe27a1c98aeb8 Mon Sep 17 00:00:00 2001
From: Vladimir Ilmov <vladimir.ilmov@jetbrains.com>
Date: Wed, 8 Apr 2020 21:25:57 +0200
Subject: [PATCH] NPE fix in StackFrameInterceptor

---
 .../idea/debugger/coroutine/CoroutineStackFrameInterceptor.kt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/idea/jvm-debugger/jvm-debugger-coroutine/src/org/jetbrains/kotlin/idea/debugger/coroutine/CoroutineStackFrameInterceptor.kt b/idea/jvm-debugger/jvm-debugger-coroutine/src/org/jetbrains/kotlin/idea/debugger/coroutine/CoroutineStackFrameInterceptor.kt
index 2173223d99f..2b797b612aa 100644
--- a/idea/jvm-debugger/jvm-debugger-coroutine/src/org/jetbrains/kotlin/idea/debugger/coroutine/CoroutineStackFrameInterceptor.kt
+++ b/idea/jvm-debugger/jvm-debugger-coroutine/src/org/jetbrains/kotlin/idea/debugger/coroutine/CoroutineStackFrameInterceptor.kt
@@ -18,7 +18,9 @@ import org.jetbrains.kotlin.idea.debugger.coroutine.proxy.ContinuationHolder
 
 class CoroutineStackFrameInterceptor(val project: Project) : StackFrameInterceptor {
     override fun createStackFrame(frame: StackFrameProxyImpl, debugProcess: DebugProcessImpl, location: Location): XStackFrame? =
-        if (AsyncStacksToggleAction.isAsyncStacksEnabled(debugProcess.xdebugProcess?.session as XDebugSessionImpl))
+        if (debugProcess.xdebugProcess?.session is XDebugSessionImpl &&
+            AsyncStacksToggleAction.isAsyncStacksEnabled(debugProcess.xdebugProcess?.session as XDebugSessionImpl)
+        )
             ContinuationHolder.coroutineExitFrame(frame, debugProcess.debuggerContext.suspendContext as SuspendContextImpl)
         else
             null