--- a/src/HOL/Predicate_Compile_Examples/IMP_1.thy Tue Sep 09 17:51:07 2014 +0200
+++ b/src/HOL/Predicate_Compile_Examples/IMP_1.thy Tue Sep 09 20:51:36 2014 +0200
@@ -11,7 +11,7 @@
type_synonym var = unit
type_synonym state = bool
-datatype com =
+datatype_new com =
Skip |
Ass bool |
Seq com com |