--| Copyright (c) 1993-2020 University of Southern California, Eiffel Software 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 classes as is, with melting and assertion (invariant). -- Execute `test'. -- Class invariant violation correctly triggers exception trace -- but run-time panic is also reported (only if classes -- not frozen). class TEST create make feature make do create x; x.test_me; end x: TEST2; end