bug#39865: 28.0.50; Emacs crash

[Robert Pluim]

>>>>> On Tue, 10 Mar 2020 16:03:12 -0300, Vinicius José Latorre 
>>>>> <viniciusjl@gmail.com> said:

    >> 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'.

    Vinicius> The line below in my ~/.emacs was crashing emacs at start time.

    Vinicius> (push '(font-backend xft x) default-frame-alist)

    Vinicius> Without the line above, all works right.

    Vinicius> If emacs is started with -Q and then loading ~/.emacs with the 
line above
    Vinicius> also works right, the problem is at starting time with that line.

This we knew, the question is about how your emacs was built. Could
you show us your value of 'system-configuration-features', that will
tell us all we need to know about HarfBuzz etc.

Thanks

Robert