Path: utzoo!mnetor!uunet!mcvax!ukc!dcl-cs!nott-cs!bhamcs!igb
From: igb@cs.bham.ac.uk (Ian G. Batten <BattenIG>)
Newsgroups: comp.sources.bugs
Subject: trek73
Message-ID: <178@bhamcs.UUCP>
Date: 19 Jan 88 17:11:22 GMT
Organization: The Dark Depths of the CS Dungeons, Birmingham University, England
Lines: 20
Keywords: suns dereference null vax


Has anyone managed to get the recently posted trek73 running on a
machine that doesn't remap zero?  (ie not a VAX :-)?  I'm trying to get
it going on a Sun and I'm getting an awful lot of core-dumps which all
result from the assumption that:

	foo = (char *) 0;
	bar = *foo;

yields bar == 0.  It doesn't.  It yields a core dump :-(

I've found some of the more obvious problems (expecting strlen ((char *)
0) to yield zero) but there are some rather more subtle ones that
currently elude me.

[Postnews told me this was "rather small to be a source distribution"
--- presumably comp.sources.bugs is for distribution of bugs for
installation in working systems]
-- 
ian