Re: 23.0.60; Still font problems

[Stephen Berman <Stephen.Berman@gmx.net>]

On Thu, 15 May 2008 09:40:20 +0100 Jason Rumney <jasonr@gnu.org> wrote:

> Stephen Berman wrote:
>> (gdb) pr spec
>> The history is empty.
>>   
>
> You need to use "pp spec" here. "pr" prints the Lisp object
> corresponding to the last "print" command, and does not take a
> variable as an argument.

Oh, thanks.  Here it is:

(gdb) br xfont_list
Breakpoint 3 at 0x81c9e11: file xfont.c, line 308.
(gdb) run -Q -fn "-adobe-courier-bold-r-normal--*-120-*-*-m-*-iso8859-1"
Starting program: /Users/steve/cvsroot/emacs/src/emacs -Q -fn "-adobe-courier-bold-r-normal--*-120-*-*-m-*-iso8859-1"
[Thread debugging using libthread_db enabled]
[New Thread 0xb6dee8d0 (LWP 17590)]
[Switching to Thread 0xb6dee8d0 (LWP 17590)]

Breakpoint 3, xfont_list (frame=141326084, spec=138016964) at xfont.c:308
308       FRAME_PTR f = XFRAME (frame);
(gdb) pp spec
#<font-spec nil adobe fixed  iso8859-1 nil nil nil nil nil nil nil ((:name . "-adobe-courier-bold-r-normal--*-120-*-*-m-*-iso8859-1"))>

From her I single stepped through the program, but after many hundreds
of iterations I gave up.  Then I tried again, this time using various
combinations of `s 1000', `s 500', `s 100', etc. but still never reached
the place where I could single step until the failure happens before my
patience ran out.  A couple of times I overshot the mark, and gdb
complained:

Warning:
Cannot insert breakpoint -495.
Error accessing memory address 0x7b69477e: Input/output error.

after which:

(gdb) s
Single stepping until exit from function siglongjmp,
which has no line number information.
Font `-adobe-courier-bold-r-normal--*-120-*-*-m-*-iso8859-1' is not defined

Program exited with code 0377.

Is there any gdb command, or any advice, for stopping execution "close
enough" to the point of failure so that I can single step up to it
before my fingers go numb?

Steve Berman