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src/HOL/Metis_Examples/Trans_Closure.thy
changeset 58249 180f1b3508ed
parent 57245 f6bf6d5341ee
child 58310 91ea607a34d8 
--- a/src/HOL/Metis_Examples/Trans_Closure.thy	Tue Sep 09 17:51:07 2014 +0200
+++ b/src/HOL/Metis_Examples/Trans_Closure.thy	Tue Sep 09 20:51:36 2014 +0200
@@ -15,7 +15,7 @@
 
 type_synonym addr = nat
 
-datatype val
+datatype_new val
   = Unit        -- "dummy result value of void expressions"
   | Null        -- "null reference"
   | Bool bool   -- "Boolean value"
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