Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the emacs-pretest-bug@gnu.org  
mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

I've encountered a few crashes in Emacs.app, which happened while  
typing when Emacs was a bit busy. It turns out that these crashes  
were due to an omitted null-pointer check at line 4165 of keyboard.c  
in function kbd_buffer_get_event(). The attached patch fixes this  
problem along with a second omitted null-pointer check in line 4323  
of the same function.

Wolfgang