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-rw-r--r--generic/tclZlib.c20
1 files changed, 19 insertions, 1 deletions
diff --git a/generic/tclZlib.c b/generic/tclZlib.c
index 2ae12c0..f43f704 100644
--- a/generic/tclZlib.c
+++ b/generic/tclZlib.c
@@ -13,7 +13,7 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclZlib.c,v 1.32 2009/11/18 21:59:51 nijtmans Exp $
+ * RCS: @(#) $Id: tclZlib.c,v 1.33 2010/02/08 13:21:42 dkf Exp $
*/
#include "tclInt.h"
@@ -1316,6 +1316,15 @@ Tcl_ZlibDeflate(
obj = Tcl_GetObjResult(interp);
/*
+ * Make sure that the result is an unshared object. [Bug 2947783]
+ */
+
+ if (Tcl_IsShared(obj)) {
+ obj = Tcl_DuplicateObj(obj);
+ Tcl_SetObjResult(interp, obj);
+ }
+
+ /*
* Compressed format is specified by the wbits parameter. See zlib.h for
* details.
*/
@@ -1469,6 +1478,15 @@ Tcl_ZlibInflate(
obj = Tcl_GetObjResult(interp);
/*
+ * Make sure that the result is an unshared object. [Bug 2947783]
+ */
+
+ if (Tcl_IsShared(obj)) {
+ obj = Tcl_DuplicateObj(obj);
+ Tcl_SetObjResult(interp, obj);
+ }
+
+ /*
* Compressed format is specified by the wbits parameter. See zlib.h for
* details.
*/