GNU DDD 3.3.12 (i386-apple-darwin15.6.0) Copyright (C) 1995-1999 Technische Universität Braunschweig, Germany. Copyright (C) 1999-2001 Universität Passau, Germany. Copyright (C) 2001 Universität des Saarlandes, Germany. Copyright (C) 2001-2009 Free Software Foundation, Inc. Compiled with GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.42.1) Requires X11R6, Xt11R6, Motif 2.3.4 (Motif Version 2.3.4) Includes XPM 3.4.11, Athena Panner (7000002L), Manual, App defaults, DDD core Built 2017-01-25 by (unknown). $ ddd ! Xt error: Unresolved inheritance operation ! Xt error ! Cannot save options