--- a/src/HOL/HOLCF/IOA/ex/TrivEx2.thy Tue Sep 09 17:51:07 2014 +0200
+++ b/src/HOL/HOLCF/IOA/ex/TrivEx2.thy Tue Sep 09 20:51:36 2014 +0200
@@ -8,7 +8,7 @@
imports IOA Abstraction
begin
-datatype action = INC
+datatype_new action = INC
definition
C_asig :: "action signature" where