bug#34394: 27.0.50; Emacs segfaults with SLY, company and C-g

[Eli Zaretskii]

> From: João Távora <joaotavora@gmail.com>
> Date: Sat, 9 Feb 2019 15:37:23 +0000
> Cc: 34394@debbugs.gnu.org, Andreas Schwab <schwab@linux-m68k.org>
> 
> > Is it possible that somehow sit_for is called recursively in this
> > scenario?  If you put a breakpoint in sit_for, does it break when bt
> > shows another instance of sit_for up the call-stack?
> >
> > We need to establish who clobbers the jump_buf being used to implement
> > quitting by C-g.
> 
> The problem is that if I place a breakpoint there I can't work with company
> at all.  So I can't reproduce the problem.

Try a breakpoint that automatically continues the program, after it
displays the backtrace.  Like this:

  (gdb) break sit_for
  ....
  (gdb) commands
   > bt
   > continue
   > end