From ba9a4314e1e25cbd135a6f0d5ea855e8f437d104 Mon Sep 17 00:00:00 2001
From: Michel Kaporin <t-mikapo@microsoft.com>
Date: Tue, 13 Jun 2017 09:33:16 +0200
Subject: [PATCH] Resolves #27903

---
 .../debug/electron-browser/debugEditorContribution.ts    | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/vs/workbench/parts/debug/electron-browser/debugEditorContribution.ts b/src/vs/workbench/parts/debug/electron-browser/debugEditorContribution.ts
index 95e12911dcf..72c5ac93ee9 100644
--- a/src/vs/workbench/parts/debug/electron-browser/debugEditorContribution.ts
+++ b/src/vs/workbench/parts/debug/electron-browser/debugEditorContribution.ts
@@ -356,8 +356,13 @@ export class DebugEditorContribution implements IDebugEditorContribution {
 		// Toggles exception widget based on the state of the current editor model and debug stack frame
 		const model = this.editor.getModel();
 		const focusedSf = this.debugService.getViewModel().focusedStackFrame;
-		const callStack = focusedSf ? focusedSf.thread.getCallStack() : null;
-		if (!model || !focusedSf || !callStack || callStack.length === 0) {
+		if (!model || !focusedSf || !focusedSf.source || !focusedSf.source.available) {
+			this.closeExceptionWidget();
+			return;
+		}
+
+		const callStack = focusedSf.thread.getCallStack();
+		if (!callStack || callStack.length === 0) {
 			this.closeExceptionWidget();
 			return;
 		}
-- 
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