bug#25945: Emacs aborts while calling FT_Load_Glyph

[Werner LEMBERG <wl@gnu.org>]

>> > I think it's too late for (b) when we discover this problem in
>> > ftfont_get_metrics.  To do (b) we should have discovered this in
>> > ftfont_has_char, or thereabouts.
>> 
>> Interesting.  How comes that Emacs aborts right there?
> 
> Sorry, I don't understand the question.  If you are asking why
> there's a call to emacs_abort if FT_Load_Glyph fails, then I guess
> it''s because this is unexpected and we have no code capable of
> coping with such a calamity.

I mean: There's more than one place where FT_Load_Glyph is called with
`FT_LOAD_DEFAULT'.  You say that it is `too late'; this implies that
FT_Load_Glyph' has already been called earlier for a given glyph (with
`FT_LOAD_DEFAULT'), apparently without any fatal causes.  There's just
a single `emacs_abort' related to the calls to FT_Load_Glyph, and this
looks strange to me – and not justified.


    Werner