[Bug 12307] firefox 3 crash on some web pages [dogfood]

http://bugs.winehq.org/show_bug.cgi?id=12307

--- Comment #10 from Alexandre Julliard   2008-06-02 12:40:01 ---
(In reply to comment #8)
> Saw this show up associated with a visual problem once:
> in a gmail signin page, which was autofilled with
> my username and password, the autofilled text
> was all on top of each other, as was the
> label on the login button.  I fooled around
> trying to erase the username and type it in again,
> and then the crash (with same stack) happened.
> I suspect something is clobbering a font structure
> somewhere...

I think the font structures are fine, it's just that we get a garbage string
that causes reference to non-existent glyphs. We should instead fall back to a
default glyph in that case.