Re: Failed assertion on make-frame-on-display

[Chong Yidong]

Richard Stallman <address@hidden> writes:

> I can trigger the following assertion by running
>
>     emacs -Q -fn "-*-terminus-medium-r-*-*-16-*-*-*-*-*-*-1"
>
> and M-x make-frame-on-display to a display that doesn't have that font
> installed.  When compiled without assertions, emacs dies when
> dereferencing the NULL returned by choose_face_font.

I can't test this, but probably the way to fix this is to make it an
error to try to make a frame on a display that doesn't support the
default font; i.e., x-create-frame should try to load the default font
on the new display if it is not already loaded, and do an Ferror if
the load fails.

WDYT?