Path: utzoo!news-server.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!hplabs!otter.hpl.hp.com!hpopd!martin
From: martin@hpopd.pwd.hp.com (Martin Wink)
Newsgroups: comp.windows.ms
Subject: Re: Sound Driver for Windows 3.0
Message-ID: <37140008@hpopd.pwd.hp.com>
Date: 14 Mar 91 13:51:38 GMT
References: <600001@hpsgwp.sgp.hp.com>
Organization: Hewlett-Packard CCG-PWD, UK.
Lines: 18

Someone here was getting fatal exits when using the FM sound driver
and associated applications.  After some time investigating the
problem it was tracked down to having a large number of strings in
DOS environment variables.

Looking inside of the Player's data segment with HeapWalk, you can see
a copy of the DOS environment variables in its local heap.  If you
don't make use of it, it's long been suggested that you should
explicitly free 'environ' when your application starts up.  None of the
standard MS applications I looked at have the variables in their heap.

Unfortunately I can't find a reference or example of it being done to
say exactly how to do it, but I would guess that LocalFree(environ)
would do it.  Maybe someone else can refresh me on that.

cheers.........
   martin wink.
   HP Pinewood Information Systems Division, UK.