changeset 25288 | 6e0c8dd213df |
parent 25143 | 2a1acc88a180 |
child 25365 | 4e7a1dabd7ef |
--- a/src/HOL/Tools/inductive_package.ML Mon Nov 05 18:18:39 2007 +0100 +++ b/src/HOL/Tools/inductive_package.ML Mon Nov 05 20:50:41 2007 +0100 @@ -725,6 +725,7 @@ fun add_ind_def {verbose, kind, alt_name, coind, no_elim, no_ind} cs intros monos params cnames_syn ctxt = let + val _ = null cnames_syn andalso error "No inductive predicates given"; val _ = if verbose then message ("Proofs for " ^ coind_prefix coind ^ "inductive predicate(s) " ^ commas_quote (map fst cnames_syn)) else ();