On Sun, 05 Oct 2014 12:33:45 +0900
Norihiro Tanaka <noritnk@kcn.ne.jp> wrote:

> find_pred function is return an address to NULL pointer, but I think we
> don't hope it.  So fix it.
> 
> BTW, it could never happen, as the syntax is checked in regex prior to it.

I wrote and added a test driver for this bug which uses a program
`dfa-match-aux' added for tests recently.

The program will generate a core dump before the change.