Date: Tue, 8 Mar 94 14:23:53 EST From: peprbv AT cfa0 DOT harvard DOT edu (Bob Babcock) To: meetze AT charlie DOT ece DOT scarolina DOT edu Cc: djgpp AT sun DOT soe DOT clarkson DOT edu Reply-To: babcock AT cfa DOT harvard DOT edu > What does it usually mean when you get a General Protection Fault. Often it means that you have dereferenced an invalid pointer. When you get a call frame traceback on screen, run symify . Assuming you have included debugging information in the executable, symify will add file names and line numbers to the traceback.