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-rw-r--r--generic/tclStringObj.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/generic/tclStringObj.c b/generic/tclStringObj.c
index 8d5bb6f..32197a7 100644
--- a/generic/tclStringObj.c
+++ b/generic/tclStringObj.c
@@ -33,7 +33,7 @@
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclStringObj.c,v 1.32.2.6 2009/02/05 14:10:58 dgp Exp $ */
+ * RCS: @(#) $Id: tclStringObj.c,v 1.32.2.7 2009/03/21 02:53:18 dgp Exp $ */
#include "tclInt.h"
@@ -1473,6 +1473,13 @@ Tcl_AppendStringsToObjVA (objPtr, argList)
SetStringFromAny(NULL, objPtr);
/*
+ * Force the existence of a string rep. so we avoid crashes operating
+ * on a pure unicode value. [Bug 2597185]
+ */
+
+ (void) Tcl_GetStringFromObj(objPtr, &oldLength);
+
+ /*
* Figure out how much space is needed for all the strings, and
* expand the string representation if it isn't big enough. If no
* bytes would be appended, just return. Note that on some platforms
@@ -1481,7 +1488,6 @@ Tcl_AppendStringsToObjVA (objPtr, argList)
nargs = 0;
newLength = 0;
- oldLength = objPtr->length;
while (1) {
string = va_arg(argList, char *);
if (string == NULL) {