Xref: news2.mv.net comp.os.msdos.djgpp:5718
From: Charles Sandmann <sandmann AT clio DOT rice DOT edu>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Page fault after return from main()
Date: Sun, 07 Jul 1996 21:18:56 CDT
Organization: Rice University, Houston, Texas
Lines: 13
Message-ID: <31e07010.sandmann@clio.rice.edu>
References: <4rp66c$p27 AT ralph DOT vnet DOT net>
Reply-To: sandmann AT clio DOT rice DOT edu
NNTP-Posting-Host: clio.rice.edu
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

> My program gives the following error message after it returns from main():
> Page fault cr2=10000010 at eip=14b6c; flags=3216

The exit code is trying to access a bad pointer (0x10), probably in the cleanup
of closing handles, doing atexit routines, etc.  The exception handler 
is from CWSDPMI, so it's happened AFTER the DJGPP code has unhooked it's
exception handler.  You have a bug in your program - you are overwriting
memory that the libc routines use in cleanup.

> If I run the program repeatedly, it will crash with SIGSEGV inside
> malloc.  What could be causing this?

Bad pointers, use of uninitialized variables (especially pointers).