src/Tools/Code/code_ml.ML
changeset 32740 9dd0a2f83429
parent 32123 8bac9ee4b28d
child 32908 9aa8dfef16ff
--- a/src/Tools/Code/code_ml.ML	Tue Sep 29 14:59:24 2009 +0200
+++ b/src/Tools/Code/code_ml.ML	Tue Sep 29 16:24:36 2009 +0200
@@ -6,7 +6,7 @@
 
 signature CODE_ML =
 sig
-  val eval: string option -> string * (unit -> 'a) option ref
+  val eval: string option -> string * (unit -> 'a) option Unsynchronized.ref
     -> ((term -> term) -> 'a -> 'a) -> theory -> term -> string list -> 'a
   val target_Eval: string
   val setup: theory -> theory