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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 e7c8aae..6775273 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 1.70.2.6 2009/02/05 13:59:20 dgp Exp $ */
+ * RCS: @(#) $Id: tclStringObj.c,v 1.70.2.7 2009/03/21 02:54:23 dgp Exp $ */
#include "tclInt.h"
#include "tommath.h"
@@ -1548,6 +1548,13 @@ Tcl_AppendStringsToObjVA(
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 (notably OS/390) the
@@ -1556,7 +1563,6 @@ Tcl_AppendStringsToObjVA(
nargs = 0;
newLength = 0;
- oldLength = objPtr->length;
while (1) {
string = va_arg(argList, char *);
if (string == NULL) {