From c61c12b4b2317fbb1cd2fbc294078d661c2a333c Mon Sep 17 00:00:00 2001
From: fvogel <fvogelnew1@free.fr>
Date: Sun, 24 May 2015 23:11:56 +0000
Subject: More correct error handling when calling paneconfigure with a non
 existing window

---
 generic/tkPanedWindow.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/generic/tkPanedWindow.c b/generic/tkPanedWindow.c
index 3ae473a..c79be25 100644
--- a/generic/tkPanedWindow.c
+++ b/generic/tkPanedWindow.c
@@ -678,6 +678,15 @@ PanedWindowWidgetObjCmd(
 	if (objc <= 4) {
 	    tkwin = Tk_NameToWindow(interp, Tcl_GetString(objv[2]),
 		    pwPtr->tkwin);
+            if (tkwin == NULL) {
+                /*
+                 * Just a plain old bad window; Tk_NameToWindow filled in an
+                 * error message for us.
+                 */
+
+                result = TCL_ERROR;
+                break;
+            }
 	    for (i = 0; i < pwPtr->numSlaves; i++) {
 		if (pwPtr->slaves[i]->tkwin == tkwin) {
 		    resultObj = Tk_GetOptionInfo(interp,
-- 
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