Date: Wed, 18 Dec 1996 11:29:54 +0100 (MET)
From: dik kettenis <Dik DOT Kettenis AT USERS DOT INFO DOT WAU DOT NL>
Subject: A problem for gurus, I guess
To: djgpp AT delorie DOT com
Message-id: <vines.DX49+OQwhmA@vines2.wau.nl>
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Dear GPP-expert,
A program compiled with the newest version of GNU C for MSDOS returned to
MSDOS before the exit of the program. I started to debug this prgram with
GDB. At this time I have found a trouble spot, but I do not know what is
wrong. The following appears:
1. Running the program under GDB without any breaks: computer hangs
2. Stepping with s to the trouble spot: computer hangs
3. Stepping to the trouble spot (a call to a user defined function) with
   s, continuing the execution with stepi executes the program to the
   normal exit.
4. Running the program under GDB to a break at the assembler instruction
   following the assembler call to the function: 
   the program returns from the call, so the break will be reached.
   Two situations:
   a: stepping further with s: program executes to the normal exit.
   b: resuming execution by cont: machine hangs.
I hope this sounds familiar to at least one of the experts. Hopefully
someone can give me advise how to find the reason of my original
problem. I can post the code but the code is including some other 
functions rather lengthy.
Please respond to my personal email address. Regards, Dik