Re: gdb mode with gdb command from the docker

[Eli Zaretskii <eliz@gnu.org>]

> From: William Xu <william.xwl@gmail.com>
> Date: Sun, 18 Oct 2020 20:18:22 +0200
> 
> >> (gdb) r
> >> Starting program: /test/a.out 
> >> /dev/ttys002: No such file or directory.
> >
> > This is not, but the error message seems to come from a.out, not from
> > GDB.  So I think you should review the program's code and see why it
> > fails that way.
> 
> Hmm, I saw similar error in my original executable, in the created test
> program,  it only prints a string:

The error message could come from some library function.

> Also as I mentioned, if I run the gdbWrapper directly outside emacs, on
> the terminal app (i'm running Terminal on macOS), there is no problem
> seen at all.

Of course: when the program is run from GDB under Emacs, the standard
output and standard input of the program are connected to a PTY
(pseudo-terminal), not to a real console device.  So it is a small
wonder that the behavior is different.

> I think it is more likely something wrong inside emacs's
> gdb mode.

Maybe so, but I don't see what would cause this in gdb mode.