[Patch] Reimplment regex matcher using DFS

[Paolo Carlini]

On 07/24/2013 05:18 PM, Jonathan Wakely wrote:
> Should I register a new bugzilla account to comment on these two
> bugs(53622 and 57173), or any other one will do this?
> I've added a comment to the bugs.
>
> With svn commit rights you should be able to receive email at <your
> username>@gcc.gnu.org and if you use that address to create a bugzilla
> account then you'll be able to update the status of Bugzilla entries.
Thanks. I added a few words to 57513 too. It would be nice to figure out 
which specific change fixed the link-time issue (provided a definition 
for the default constructor?)

Paolo.