bug#26761: 25.1; Emacs freezes when scrolling with mouse wheel

[Eli Zaretskii]

> From: Christoph Groth <christoph@grothesque.org>
> Date: Wed, 03 May 2017 14:02:17 +0200
> 
> I'm using Emacs as shipped in Debian testing.  Since some weeks or 
> perhaps months I started to observe occasional random freezes. 
> Finally I managed to find a way to reproduce the freeze: I open a 
> certain aricle in Gnus, and scroll up and down with the mouse 
> wheel for some time.  Eventually Emacs freezes.
> 
> This problem is present in both Emacs 24 and 25 from Debian 
> testing.  In order to provide a meaningful backtrace, I rebuilt 
> the emacs25 source package (from Debian testing) without 
> optimizations and attach the full log of a gdb session (done with 
> /usr/bin/script).  I hope that this will allow someone to identify 
> and fix the problem.  Please let me know if I can be of any 
> further help.

is this Emacs binary built with ralloc.c?  Do you see ralloc.o in the
src directory?