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src/HOL/Library/code_lazy.ML
changeset 80634 a90ab1ea6458
parent 74561 8e6c973003c8
child 80636 4041e7c8059d 
--- a/src/HOL/Library/code_lazy.ML	Sun Aug 04 13:14:33 2024 +0200
+++ b/src/HOL/Library/code_lazy.ML	Sun Aug 04 13:24:54 2024 +0200
@@ -543,7 +543,7 @@
       val table = Laziness_Data.get thy
       fun num_consts_fun (_, T) =
         let
-          val s = body_type T |> dest_Type |> fst
+          val s = dest_Type_name (body_type T)
         in
           if Symtab.defined table s
           then Ctr_Sugar.ctr_sugar_of ctxt s |> the |> #ctrs |> length
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