* generic/tclCmdMZ.c (Tcl_TraceObjCmd, TraceVarProc)

	(TraceCommandProc, TclTraceCommandObjCmd):  corrected
	potential double-free of traces on variables by flagging in
	Trace*Proc that it will free the var in case the eval wants to
	delete the var trace as well. [Bug #536937]
	Also converted Tcl_UntraceVar -> Tcl_UntraceVar2 and Tcl_Eval to
	Tcl_EvalEx in Trace*Proc for slight efficiency improvement.

1 files changed, 12 insertions, 1 deletions

diff --git a/tests/trace.test b/tests/trace.test
index 6a5cc88..81aa82e 100644
--- a/tests/trace.test
+++ b/tests/trace.test
@@ -11,7 +11,7 @@
 # See the file "license.terms" for information on usage and redistribution
 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 #
-# RCS: @(#) $Id: trace.test,v 1.16 2001/12/07 13:55:59 msofer Exp $
+# RCS: @(#) $Id: trace.test,v 1.17 2002/03/29 22:47:22 hobbs Exp $
 
 if {[lsearch [namespace children] ::tcltest] == -1} {
     package require tcltest
@@ -1145,6 +1145,17 @@ test trace-18.1 {unset traces on procedure returns} {
     p1 foo bar
     set info
 } {0 {a x y}}
+test trace-18.2 {namespace delete / trace vdelete combo} {
+    namespace eval ::foo {
+	variable x 123
+    }
+    proc p1 args {
+	trace vdelete ::foo::x u p1
+    }
+    trace variable ::foo::x u p1
+    namespace delete ::foo
+    info exists ::foo::x
+} 0
 
 # Delete arrays when done, so they can be re-used as scalars
 # elsewhere.