--- a/src/HOLCF/Tools/fixrec.ML Sat May 22 13:40:15 2010 -0700
+++ b/src/HOLCF/Tools/fixrec.ML Sat May 22 14:04:05 2010 -0700
@@ -133,7 +133,10 @@
"The error occurred for the goal statement:\n" ^
Syntax.string_of_term lthy prop);
fun check th = case Thm.nprems_of th of 0 => all_tac th | n => err ();
- val tac = simp_tac (simpset_of lthy) 1 THEN check;
+ val rules = Cont2ContData.get lthy;
+ val fast_tac = SOLVED' (REPEAT_ALL_NEW (match_tac rules));
+ val slow_tac = simp_tac (simpset_of lthy);
+ val tac = (fast_tac 1 ORELSE slow_tac 1) THEN check;
in
Goal.prove lthy [] [] prop (K tac)
end;