-toMessages :: MTaskInterval (String, BCState) -> ([MTaskMSGSend], BCState)
-toMessages interval (bytes, st=:{sdss}) = (
- [MTSds sdsi $ toByteCode e\\{sdsi,sdsval=(BCValue e)}<-sdss] ++
- [MTTask interval bytes], st)
+derive gPrint BCShare
+
+toMessages :: MTaskInterval (Main (ByteCode a b)) BCState -> ([MTaskMSGSend], BCState)
+toMessages interval x s
+# (bc, newstate) = toRealByteCode (unMain x) s
+# newsdss = 'DL'.difference newstate.sdss s.sdss
+| not (trace_tn $ printToString s.sdss) = undef
+| not (trace_tn $ printToString newstate.sdss) = undef
+| not (trace_tn $ printToString newsdss) = undef
+= ([MTSds sdsi e\\{sdsi,sdsval=e}<-newsdss] ++
+ [MTTask interval bc], newstate)