Admin/BUGS
author paulson
Thu, 08 Jul 1999 13:38:41 +0200
changeset 6915 4ab8e31a8421
parent 4382 c1536da54f52
child 10941 6c09cae3b4ad
permissions -rw-r--r--
Now if_weak_cong is a standard congruence rule


Isabelle BUGS -- history of reported faults
===========================================

1.  Symptom: hyp_subst_tac does nothing if the selected equality involves type
    unknowns.  Cause: it uses the simplifier, which ignores such equalities.
    Fix: check for type unknowns in hypsubst/inspect_pair;  change interface
    function dest_eq to return the type of the equality. (lcp, 5/11/97)

2.  Symptom: read_instantiate_sg has problems instantiating types in some
    simultaneous instantiations (Message-id: <199710301432.PAA20594@sirius.Informatik.Uni-Bremen.DE> on isabelle-users)