Index: tests/tcl86.test
===================================================================
diff -u -rc2baf6c2b4e9a88c3580bdadf5e735dfe96d7f10 -r2b8b3b10404d6e67ce420e8e2a2fda57991d7c5f
--- tests/tcl86.test	(.../tcl86.test)	(revision c2baf6c2b4e9a88c3580bdadf5e735dfe96d7f10)
+++ tests/tcl86.test	(.../tcl86.test)	(revision 2b8b3b10404d6e67ce420e8e2a2fda57991d7c5f)
@@ -5,22 +5,16 @@
 # just 8.6 or newer
 if {[info command yield] eq ""} return
 
-# The test with the head version is currently broken (leads to a crash
-# between ==5 and ==5a); so deactivate for now
-return
 #
 # Test coroutine / yield
 #
 Test case number-generator {
   nx::Object create ::numbers {
     # set instance variable used in coroutine
     set :delta 2
-    :public method ++ {} {  
+    :public method ++ {} {
       yield
-      ::nsf::__db_show_stack
-      puts stderr ====5
       set i 0
-      puts stderr ====5a
       while 1 {
 	yield $i
 	incr i ${:delta}
@@ -32,7 +26,6 @@
   set ::j 0
   # use coroutine
   for {set i 0} {$i < 10} {incr i} {
-    puts stderr ====10
     incr ::j [nextNumber]
   }