RE: Unhandled exception in old DOS application

[Medland, Bill]

> -----Original Message-----
> From: M.H.VanLeeuwen [mailto:[e-mail]]
> Sent: Monday, May 13, 2002 7:33 PM
> To: [e-mail]
> Subject: Unhandled exception in old DOS application
>
> Hi,
>
> I hope this is the correct place to ask...
>
> Up until the 20020411 wine release my old DOS application 
> worked well...for the
> last ~2 years. (Thanks all of you!)
> With both 20020411 and 20020509 releases the wine issues an 
> Unhandled exception
> report and starts the debugger.
>
> bash-2.05$ wine cardload.exe -- -a340 
> -f"c:\\winapps\\winphone\\cardload.hex"
> Could not stat /mnt/fd0 (No such file or directory), ignoring drive A:
> Warning: unprotecting the first 64KB of memory to allow 
> real-mode calls.
>          NULL pointer accesses will no longer be caught.
> wine: Unhandled exception, starting debugger...
> err:int:DOSVM_Loop MsgWaitForMultipleObjects returned 
> unexpected value.
>
> This application just downloads firmware (cardload.hex) to an 
> old ISA card.
>
> What can be done to fix this, where should I begin looking to 
> fix it, who

The first thing I'd do is see which "fix" broke it.  That requires getting
the code out of the cvs itself.  Basically I do an almost binary search
between when I know it "worked" and when I know it failed and what area of
code was affected.
> From your post I presume you don't get the code from the cvs.  Do you

compile yourself or dowload rpms?

Bill

Unhandled exception in old DOS application

[M.H.VanLeeuwen]

"Medland, Bill" wrote:
> > -----Original Message-----
> > From: M.H.VanLeeuwen [mailto:[e-mail]]
> > Sent: Monday, May 13, 2002 7:33 PM
> > To: [e-mail]
> > Subject: Unhandled exception in old DOS application
> >
> > Hi,
> >
> > I hope this is the correct place to ask...
> >
> > Up until the 20020411 wine release my old DOS application
> > worked well...for the
> > last ~2 years. (Thanks all of you!)
> > With both 20020411 and 20020509 releases the wine issues an
> > Unhandled exception
> > report and starts the debugger.
> >
> > bash-2.05$ wine cardload.exe -- -a340
> > -f"c:\\winapps\\winphone\\cardload.hex"
> > Could not stat /mnt/fd0 (No such file or directory), ignoring drive A:
> > Warning: unprotecting the first 64KB of memory to allow
> > real-mode calls.
> >          NULL pointer accesses will no longer be caught.
> > wine: Unhandled exception, starting debugger...
> > err:int:DOSVM_Loop MsgWaitForMultipleObjects returned
> > unexpected value.
> >
> > This application just downloads firmware (cardload.hex) to an
> > old ISA card.
> >
> > What can be done to fix this, where should I begin looking to
> > fix it, who
>
> The first thing I'd do is see which "fix" broke it.  That requires getting
> the code out of the cvs itself.  Basically I do an almost binary search
> between when I know it "worked" and when I know it failed and what area of
> code was affected.
> > From your post I presume you don't get the code from the cvs.  Do you
>
> compile yourself or dowload rpms?

All linux apps on my systems except netscape, vmware and acroread are updated by
me from src tarballs.  This system is an _old_ slackware distribution from
floppies many years ago that i've upgraded myself since the original install.
(no libc 5 cruft left on this system ;)

Guess it's time to learn CVS.

Thanks
Martin
> Bill