fix for [Bug 1008314]

FossilOrigin-Name: 6e5e508723daff31b783eec0c6692f85b91cb95d

2 files changed, 48 insertions, 6 deletions

diff --git a/generic/tclTest.c b/generic/tclTest.c
index 1d7774a..dbd2b8e 100644
--- a/generic/tclTest.c
+++ b/generic/tclTest.c
@@ -14,7 +14,7 @@
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tclTest.c,v 1.62.2.8 2004/06/08 20:25:43 dgp Exp $
+ * RCS: @(#) $Id: tclTest.c,v 1.62.2.9 2004/08/16 14:18:25 msofer Exp $
  */
 
 #define TCL_TEST
@@ -315,6 +315,8 @@ static int		TestsetassocdataCmd _ANSI_ARGS_((ClientData dummy,
 			    Tcl_Interp *interp, int argc, CONST char **argv));
 static int		TestsetCmd _ANSI_ARGS_((ClientData dummy,
 			    Tcl_Interp *interp, int argc, CONST char **argv));
+static int		TestseterrorcodeCmd _ANSI_ARGS_((ClientData dummy,
+			    Tcl_Interp *interp, int argc, CONST char **argv));
 static int		TestsetobjerrorcodeCmd _ANSI_ARGS_((
 			    ClientData dummy, Tcl_Interp *interp,
 			    int objc, Tcl_Obj *CONST objv[]));
@@ -654,6 +656,8 @@ Tcltest_Init(interp)
             (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
     Tcl_CreateCommand(interp, "testseterr", TestsetCmd,
             (ClientData) TCL_LEAVE_ERR_MSG, (Tcl_CmdDeleteProc *) NULL);
+    Tcl_CreateCommand(interp, "testseterrorcode", TestseterrorcodeCmd,
+	    (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
     Tcl_CreateObjCommand(interp, "testsetobjerrorcode", 
 	    TestsetobjerrorcodeCmd, (ClientData) 0,
 	    (Tcl_CmdDeleteProc *) NULL);
@@ -3811,11 +3815,46 @@ TestupvarCmd(dummy, interp, argc, argv)
 /*
  *----------------------------------------------------------------------
  *
+ * TestseterrorcodeCmd --
+ *
+ *	This procedure implements the "testseterrorcodeCmd".
+ *	This tests up to five elements passed to the
+ *	Tcl_SetErrorCode command.
+ *
+ * Results:
+ *	A standard Tcl result. Always returns TCL_ERROR so that
+ *	the error code can be tested.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+	/* ARGSUSED */
+static int
+TestseterrorcodeCmd(dummy, interp, argc, argv)
+    ClientData dummy;			/* Not used. */
+    Tcl_Interp *interp;			/* Current interpreter. */
+    int argc;				/* Number of arguments. */
+    CONST char **argv;			/* Argument strings. */
+{
+    if (argc > 6) {
+	Tcl_SetResult(interp, "too many args", TCL_STATIC);
+	return TCL_ERROR;
+    }
+    Tcl_SetErrorCode(interp, argv[1], argv[2], argv[3], argv[4],
+	    argv[5], NULL);
+    return TCL_ERROR;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
  * TestsetobjerrorcodeCmd --
  *
  *	This procedure implements the "testsetobjerrorcodeCmd".
- *	This tests up to five elements passed to the
- *	Tcl_SetObjErrorCode command.
+ *	This tests the Tcl_SetObjErrorCode function.
  *
  * Results:
  *	A standard Tcl result. Always returns TCL_ERROR so that
diff --git a/generic/tclVar.c b/generic/tclVar.c
index e6bff11..8478394 100644
--- a/generic/tclVar.c
+++ b/generic/tclVar.c
@@ -15,7 +15,7 @@
  * See the file "license.terms" for information on usage and redistribution
  * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
  *
- * RCS: @(#) $Id: tclVar.c,v 1.69.2.5 2004/05/22 17:01:39 msofer Exp $
+ * RCS: @(#) $Id: tclVar.c,v 1.69.2.6 2004/08/16 14:18:26 msofer Exp $
  */
 
 #include "tclInt.h"
@@ -1562,7 +1562,7 @@ TclPtrSetVar(interp, varPtr, arrayPtr, part1, part2, newValuePtr, flags)
     CONST char *part2;		/* If non-NULL, gives the name of an element
 				 * in the array part1. */
     Tcl_Obj *newValuePtr;	/* New value for variable. */
-    CONST int flags;			/* OR-ed combination of TCL_GLOBAL_ONLY,
+    CONST int flags;		/* OR-ed combination of TCL_GLOBAL_ONLY,
 				 * and TCL_LEAVE_ERR_MSG bits. */
 {
     Interp *iPtr = (Interp *) interp;
@@ -1621,8 +1621,11 @@ TclPtrSetVar(interp, varPtr, arrayPtr, part1, part2, newValuePtr, flags)
      * "copy on write".
      */
 
+    if (flags & TCL_LIST_ELEMENT && !(flags & TCL_APPEND_VALUE)) {
+	TclSetVarUndefined(varPtr);
+    }
     oldValuePtr = varPtr->value.objPtr;
-    if (flags & TCL_APPEND_VALUE) {
+    if (flags & (TCL_APPEND_VALUE|TCL_LIST_ELEMENT)) {
 	if (TclIsVarUndefined(varPtr) && (oldValuePtr != NULL)) {
 	    Tcl_DecrRefCount(oldValuePtr);     /* discard old value */
 	    varPtr->value.objPtr = NULL;