Breakpoint ignored.

[Óscar Fuentes]

I´m trying to debug bug 3681: using a USA keyboard with alt-intl
variant, when a composed character such as á is typed with
blink-cursor-mode off, the character is not displayed until another
character is typed. (When blink-cursor-mode is on the character is
displayed after the cursor blinks).

This affects emacs when running on X.

C-h k á says `self-insert-command' is invoked, wich is a built-in
function. So I follow the link to the source code to learn that the C
function is Fself_insert_command, then invoke emacs and set a breakpoint
on it, but gdb does not stop when a character is typed (and displayed),
as if no breakpoint was active.

What I'm missing?

address@hidden:~/dev/other/emacs/src$ gdb --args ./emacs -q --no-site-file 
--no-splash
GNU gdb 6.8-debian
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu"...
SIGINT is used by the debugger.
Are you sure you want to change it? (y or n) [answered Y; input not from 
terminal]
DISPLAY = :0
TERM = xterm
Breakpoint 1 at 0x4caab0: file emacs.c, line 430.
Breakpoint 2 at 0x4ea8a0: file sysdep.c, line 1129.
(gdb) break Fself_insert_command
Breakpoint 3 at 0x50b060: file cmds.c, line 331.
(gdb) r
Starting program: /home/oscar/dev/other/emacs/src/emacs -q --no-site-file 
--no-splash
[Thread debugging using libthread_db enabled]
[New Thread 0x7fcea7e26740 (LWP 4731)]

-- 
Óscar