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Re: Strange freezes when using gdb (rxvt/mintty but not dos box)
On Feb 20 12:45, Christopher Faylor wrote:
> On Fri, Feb 20, 2009 at 06:26:17PM +0100, Corinna Vinschen wrote:
> >On Feb 20 12:13, Christopher Faylor wrote:
> >> On Fri, Feb 20, 2009 at 04:45:00PM +0000, Dave Korn wrote:
> >> >Roland Schwingel wrote:
> >> >>gdb freezes upon execution of the inferior process when used from
> >> >>within mintty/rxvt, but does not freeze when gdb is invoked from a
> >> >>(conventional) bash inside of a windows DOS box.
> >> >[...]
> >> >>But why does it work with DOS box and not using mintty/rxvt???
> >> >
> >> >Clue here. You are launching a win32 app, from a cygwin app, in a
> >> >(non-console-based) GUI window. Won't work. Use a console. See
> >> >discussions around CYGWIN=tty for full details (which, if you had it
> >> >set, ought to make the crash occur in a console as well as in
> >> >rxvt/mintty, but isn't anything you can turn off for rxvt and get it
> >> >working).
> >>
> >> Right on, Dave. There are all sorts of potential problems with using
> >> a cygwin pty/tty and a mingw process.
> >>
> >> So: what he said.
> >
> >What about the new-console option in Cygwin's GDB to create the inferior
> >process in a new Console window? Shouldn't that help here, as long as
> >the pty is actually running in the local GUI session.
>
> I don't think that resets stdin/stdout for the inferior process so I
> doubt that it would help.
Indeed, that could be a problem. I was just wondering if this win32
app doesn't actually opens the console by itself and uses functions
like WriteConsole. That could explain why it hangs.
Corinna
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Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
Red Hat
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