Pip Cet <pipcet@gmail.com> writes:

> On Sat, Jan 11, 2020 at 6:37 PM Pieter van Oostrum
> <pieter-l@vanoostrum.org> wrote:
>> I compiled HEAD with this patch applied, and it still crashed but with
>> the other crash cause (in Fmouse_pixel_position).
>
> Do you have a backtrace? I think it's a NULL pointer reference now.
> The attached patch might help.

I have a backtrace, but without debug info. I am now compiling with your patch and with debug info, as described in etc/DEBUG.