Re: 5250 Server Patch

[Mike Madore <mmadore@xxxxxxxxxxxxxxxxxxx>]

Hi Scott,

This is doing the same thing on UnixWare 7.  Segfaulting that is.  I can't
get gdb to work for me.  I've noticed what you said about memory being
initialized on Linux.  Sometimes these bugs don't show up until you run on
another Unix.  I'll try to fix the bug this afternoon.  Thanks for finding
it.

Mike

On Tue, 16 May 2000, Scott Klement wrote:

> 
> Okay, I did a "rm -rf tn5250/"  and checked out the whole thing from
> scratch.   I'm still having the same problem.  
> 
> It says that This->ref is in an invalid area of memory.  
> 
> I'm running this on FreeBSD.    One of the issues that we've run into on
> this project in the past is that Linux will often initialize things to
> zero or null, and FreeBSD assumes that you'll do the initializing.
> 
> If I have a chance, I'll try this on Linux, and see if it works... 
> 
> I guess, the problem doesn't necessarily have to be a result of the
> server changes that you added to CVS, it may be a result of another
> change that went into CVS...   I hadn't updated in two or three days prior
> to trying this out.
> 
> But either way, I'd really like to see it be fixed :)  (Since I can't
> currently run it at all)
> 
> 
> 
> On Tue, 16 May 2000, Mike Madore wrote:
> 
> > Hmmm.  I didn't touch conf.c.  Could you try doing a fresh checkout and
> > see if it still crashes.  It seems to run fine for me.
> > 
> > Mike
> > 
> > On Tue, 16 May 2000, Scott Klement wrote:
> > 
> > > 
> > > After doing an update from CVS, the emulator fails to run for me.  
> > > I immediately get a "Segmentation Fault". 
> > > 
> > > The line that it crashes on is in conf.c:
> > > 
> > > 
> > > void tn5250_config_unref (Tn5250Config *This) 
> > > {
> > >    if (-- This->ref == 0) {           <---- This line ------
> > >       Tn5250ConfigStr *iter, *next;
> > >  
> > >       /* Destroy all vars. */
> > >       if ((iter = This->vars) != NULL) {
> > > 
> > > Most likely, something isn't being initialized to NULL or a pointer isnt
> > > getting memory allocated to it, but I don't know what at this point.
> > > 
> > > PLEASE HELP! :)
> > > 
> > > On Mon, 15 May 2000, Mike Madore wrote:
> > > 
> > > > Hi,
> > > > 
> > > > I have applied Greg Swenson's (swenson@cross-works.com) 5250 server
> > > > patches that lay some groundwork for providing 5250 server functionality
> > > > on Linux.  My initial testing indicate that the patch hasn't broken
> > > > anything, but if people could try out what's in CVS and see if 
>everything
> > > > still works for them, that would be great.  The patch doesn't provide 
>any
> > > > user visible changes.  So, who wants to write a 5250 shell? ;-)
> > > > 
> > > > Mike
> > > > 
> 
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