--| Copyright (c) 1993-2006 University of Southern California and contributors. --| All rights reserved. --| Your use of this work is governed under the terms of the GNU General --| Public License version 2. -- To reproduce error: -- Compile class as is. When compiler reports VAOL error, -- change invariant assertion to `a = a'. Resume. -- Compiler still reports VAOL error, though there is none. class TEST creation make feature make is do end; a: INTEGER; invariant $INVARIANT end