GNU bug report logs - #11964
describe-char causes a fatal error (abort trap: 6) in non-windowed mode

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Message #23 received at 11964 <at> debbugs.gnu.org (full text, mbox):

From: Chong Yidong <cyd <at> gnu.org>
To: Jan Djärv <jan.h.d <at> swipnet.se>
Cc: Dan Maftei <ninestraycats <at> gmail.com>, 11964 <at> debbugs.gnu.org
Subject: Re: bug#11964: describe-char causes a fatal error (abort trap: 6) in
	non-windowed mode
Date: Fri, 23 Nov 2012 17:28:14 +0800

Jan Djärv <jan.h.d <at> swipnet.se> writes:

> Basically no, because
>
> p face->font->driver
> $3 = (struct font_driver *) 0x3
>
> Uninitialized memory?

Yeah.

Could you try to debug this by stepping through face_for_char when it is
called via Finternal_char_font?  You should be able to do this by doing

b Finternal_char_font
r
[Do the recipe]
b face_for_char
c

Then, when the debugger hits the face_for_char breakpoint, step through
that function.  When the variables rfont_def and font_object get
assigned values, use pp to view their contents and see if they are
valid.

Thanks.

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