From ba5a59c8342e4fa4692b21dbeb04d587f518feb0 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Fri, 25 Jun 1999 17:25:22 +0000
Subject: Break cycle on close.

---
 Tools/idle/Debugger.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Tools/idle/Debugger.py b/Tools/idle/Debugger.py
index b085a1d..267d39f 100644
--- a/Tools/idle/Debugger.py
+++ b/Tools/idle/Debugger.py
@@ -26,6 +26,8 @@ class Debugger(bdb.Bdb):
         if self.interacting:
             self.top.bell()
             return
+        if self.stackviewer:
+            self.stackviewer.close(); self.stackviewer = None
         self.pyshell.close_debugger()
         self.top.destroy()
 
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