bug#10933: Acknowledgement (24.0.94; No output shown in *input/output* buffer of M-x gdb not working after first run)

[Stefan Monnier <monnier@iro.umontreal.ca>]

> I think this bug is due to gdb-mi creating a pty which it expects to
> remain open. When the process being debugged disconnects, emacs will
> receive an EIO-errno and (I believe mistakenly) send a SIGCHLD to
> itself, and stop listening to the pty.

> This patch fixes the problem for me.

Thanks, I don't understand what is special about gdb-mi that it's the
only one to trigger this problem, and I suspect there's a slightly
cleaner fix (as the above comment mentions, we only send ourselves
a SIGCHLD to work around problems we don't understand in some
undescribed situations, which may even be situations that don't exist
any more nowadays for all I know).
But I installed the patch anyway, with minor coding-convention cleanups
(wrap at 80 columns, space before open-paren).


        Stefan