diff -r 9d59dab38fef -r f55e77f623ab src/HOL/Extraction/ROOT.ML
--- a/src/HOL/Extraction/ROOT.ML	Mon Aug 16 18:20:36 2010 +0200
+++ b/src/HOL/Extraction/ROOT.ML	Mon Aug 16 22:56:28 2010 +0200
@@ -1,4 +1,6 @@
 (* Examples for program extraction in Higher-Order Logic *)
 
-no_document use_thys ["Efficient_Nat", "Monad_Syntax", "~~/src/HOL/Number_Theory/UniqueFactorization"];
+no_document use_thys ["Efficient_Nat", "Monad_Syntax", "~~/src/HOL/Number_Theory/Primes"];
+share_common_data ();
+no_document use_thys ["~~/src/HOL/Number_Theory/UniqueFactorization"];
 use_thys ["Greatest_Common_Divisor", "Warshall", "Higman", "Pigeonhole", "Euclid"];