diff -r 3e274608f06b -r f9283eb3a4bf src/HOL/Codegenerator_Test/Generate_Pretty.thy
--- a/src/HOL/Codegenerator_Test/Generate_Pretty.thy	Thu Jun 09 08:32:22 2011 +0200
+++ b/src/HOL/Codegenerator_Test/Generate_Pretty.thy	Thu Jun 09 09:07:13 2011 +0200
@@ -10,6 +10,10 @@
 lemma [code, code del]: "nat_of_char = nat_of_char" ..
 lemma [code, code del]: "char_of_nat = char_of_nat" ..
 
+declare Quickcheck_Narrowing.zero_code_int_code[code del]
+declare Quickcheck_Narrowing.one_code_int_code[code del]
+declare Quickcheck_Narrowing.int_of_code[code del]
+
 subsection {* Check whether generated code compiles *}
 
 text {*