On Wed, Oct 4, 2017 at 7:09 AM Eli Zaretskii <eliz@gnu.org> wrote:

> From: Kaushal Modi <kaushal.modi@gmail.com>
> Date: Wed, 04 Oct 2017 10:53:00 +0000
> Cc: Emacs developers <emacs-devel@gnu.org>, Noam Postavsky <npostavs@users.sourceforge.net>
>
> Also, with older gdb version, that ships with my OS, I don't get that ptrace error, but the gdb is not catching
> any exceptions from emacs. While in the latest gdb 8.0.1, I get ptrace error. So it could be use that the newer
> version is throwing an error where needed?

Finally got GDB working.. the solution was embarrassing.. needed to restart my machine.. it had an uptime of around a year.

(Now, will come back with some useful backtrace results if I can still recreate those disappearing line numbers after the machine reboot... sigh.)