Re: [PATCH v2] Improved ^c support for gdb/guile

[Eli Zaretskii <eliz@gnu.org>]

> Date: Mon, 17 Feb 2014 12:59:22 -0800
> From: Doug Evans <xdje42@gmail.com>
> Cc: "gdb-patches@sourceware.org" <gdb-patches@sourceware.org>, guile-devel@gnu.org
> 
> >> +void
> >> +gdbscm_initialize_sigint (void)
> >> +{
> >> +  siscm_sigint_pipe[0] = siscm_sigint_pipe[1] = -1;
> >> +
> >> +  if (!SCM_USE_PTHREAD_THREADS)
> >> +    {
> >> +      warning (_("Guile does not have pthreads support."));
> >> +      warning (_("Proper SIGINT handling for Guile will be unavailable."));
> >> +      return;
> >> +    }
> >
> > The above is what worries me.  Guile currently doesn't work in the
> > native MinGW build if configured with threads (it crashes, hangs,
> > etc.).  Can't we have decent SIGINT handling without pthreads?
> 
> With 2.0.x, no.
> I'm ok with changing the warning, e.g., not printing it at all on
> systems where it would otherwise always be printed, and instead
> documenting the issue for such systems.
> 
> The downside is that while Scheme code is running SIGINT is ignored
> (unless one is in the repl, or sets up a SIGINT handler oneself).

Ignored why? because GDB sets the handler to SIG_IGN?  Or for some
other reason?