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-rw-r--r--generic/tkWindow.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/generic/tkWindow.c b/generic/tkWindow.c
index 406eb7a..161cdcb 100644
--- a/generic/tkWindow.c
+++ b/generic/tkWindow.c
@@ -11,7 +11,7 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tkWindow.c,v 1.89.2.2 2008/04/07 23:14:07 hobbs Exp $
+ * RCS: @(#) $Id: tkWindow.c,v 1.89.2.3 2009/02/27 22:59:30 patthoyts Exp $
*/
#include "tkInt.h"
@@ -1640,6 +1640,13 @@ Tk_MapWindow(
if (winPtr->window == None) {
Tk_MakeWindowExist(tkwin);
}
+ /*
+ * [Bug 2645457]: the previous call permits events to be processed and can
+ * lead to the destruction of the window under some conditions.
+ */
+ if (winPtr->flags & TK_ALREADY_DEAD) {
+ return;
+ }
if (winPtr->flags & TK_WIN_MANAGED) {
/*
* Lots of special processing has to be done for top-level windows.