bug#53383: 27.2; segfault in pos_visible_p

[Eli Zaretskii]

> From: Jeff Trull <edaskel@att.net>
> Date: Wed, 19 Jan 2022 22:37:23 -0800
> 
> I was in a C++ code file and ran C-s (forward-search) IIRC.
> 
> 
> (gdb) bt full
> #0  pos_visible_p
>     (w=0x55555c16e650, charpos=295, x=0x7fffffffaf68, y=0x7fffffffaf6c,
> rtop=0x7fffffffaf58, rbot=0x7fffffffaf5c, rowh=0x7fffffffaf60,
> vpos=0x7fffffffaf64)
>     at xdisp.c:1874
>         g = 0x36
>         startpos = 0x2aa
>         end = 326
>         endpos = 0x51a
>         start = 170
>         it3 =

Thanks, this is a known bug#45156, which is already fixed in what will
soon become Emacs 28.1.  If you can install the latest pretest of
Emacs 28.1, you should see this problem gone.