bug#39865: 28.0.50; Emacs crash

[Robert Pluim]

>>>>> On Tue, 10 Mar 2020 11:54:53 -0300, Vinicius José Latorre 
>>>>> <viniciusjl@gmail.com> said:

    >> AFAIU, the problem in this case wasn't that the backend wasn't
    >> supported, it was that it was changed in the middle of a session.

    Vinicius> Yes, but only at emacs starting (~/.emacs evaluation), after 
starting there
    Vinicius> is no problem to set a font-backend.

I donʼt remember seeing: was your emacs built with cairo or with xft?
With or without HarfBuzz? Because I canʼt get an xft+hb build to
crash when switching the font-backend to 'xft'.

Robert