bug#18631: [PATCH] dfa: return NULL as can't find any predicates

[Norihiro Tanaka]

On Sun, 05 Oct 2014 12:33:45 +0900
Norihiro Tanaka <address@hidden> 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.

0001-dfa-return-NULL-as-can-t-find-any-predicates.patch
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