* generic/tclExecute.c:

	* tests/execute.test (execute-9.1): dgp's fix for [Bug 1522803].

1 files changed, 10 insertions, 12 deletions

diff --git a/generic/tclObj.c b/generic/tclObj.c
index 521a49b..6463904 100644
--- a/generic/tclObj.c
+++ b/generic/tclObj.c
@@ -12,7 +12,7 @@
  * See the file "license.terms" for information on usage and redistribution of
  * this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tclObj.c,v 1.109 2006/07/20 06:17:39 das Exp $
+ * RCS: @(#) $Id: tclObj.c,v 1.110 2006/07/21 10:47:19 msofer Exp $
  */
 
 #include "tclInt.h"
@@ -111,13 +111,8 @@ typedef struct PendingObjData {
 #define ObjDeletePending(contextPtr)	((contextPtr)->deletionCount > 0)
 #define ObjOnStack(contextPtr)		((contextPtr)->deletionStack != NULL)
 #define PushObjToDelete(contextPtr,objPtr) \
-    /* Invalidate the string rep first so we can use the bytes value \
-     * for our pointer chain. */ \
-    if (((objPtr)->bytes != NULL) \
-	    && ((objPtr)->bytes != tclEmptyStringRep)) { \
-	ckfree((char *) (objPtr)->bytes); \
-    } \
-    /* Now push onto the head of the stack. */ \
+    /* The string rep is already invalidated so we can use the bytes value \
+     * for our pointer chain: push onto the head of the stack. */ \
     (objPtr)->bytes = (char *) ((contextPtr)->deletionStack); \
     (contextPtr)->deletionStack = (objPtr)
 #define PopObjToDelete(contextPtr,objPtrVar) \
@@ -849,6 +844,13 @@ TclFreeObj(
 	Tcl_Panic("Reference count for %lx was negative", objPtr);
     }
 
+    /* Invalidate the string rep first so we can use the bytes value 
+     * for our pointer chain, and signal an obj deletion (as opposed
+     * to shimmering) with 'length == -1' */ 
+    
+    TclInvalidateStringRep(objPtr);
+    objPtr->length = -1;
+
     if (ObjDeletePending(context)) {
 	PushObjToDelete(context, objPtr);
     } else {
@@ -857,7 +859,6 @@ TclFreeObj(
 	    typePtr->freeIntRepProc(objPtr);
 	    ObjDeletionUnlock(context);
 	}
-	TclInvalidateStringRep(objPtr);
 
 	Tcl_MutexLock(&tclObjMutex);
 	ckfree((char *) objPtr);
@@ -923,9 +924,6 @@ TclFreeObj(
 	    objPtr->typePtr->freeIntRepProc(objPtr);
 	    ObjDeletionUnlock(context);
 
-	    if (objPtr->bytes && (objPtr->bytes != tclEmptyStringRep)) {
-		ckfree((char *) objPtr->bytes);
-	    }
 	    TclFreeObjStorage(objPtr);
 	    TclIncrObjsFreed();
 	    ObjDeletionLock(context);