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

[Eli Zaretskii]

> From: João Távora <joaotavora@gmail.com>
> Cc: 34394@debbugs.gnu.org,  schwab@linux-m68k.org
> Date: Sat, 09 Feb 2019 13:23:06 +0000
> 
>    (gdb) p globals.f_Vquit_flag 
>    $3 = XIL(0xc750)
>    (gdb) xsymbol
>    $4 = (struct Lisp_Symbol *) 0x555555ce94d0 <lispsym+51024>
>    "t"

Thanks.  So my theory eats dust.  Hmm...  I wonder if you could come
up with a simpler reproducer, perhaps in "emacs -nw" (which many times
tends to make such problems more prominent and simpler to reproduce)?
Removing the need for having SLY or eglot would be a major
simplification.  Then investigating this could be easier.