[Patch, libstdc++/63497] Avoid dereferencing invalid iterator in regex_executor

[Jonathan Wakely]

On 25/11/14 00:41 -0800, Tim Shen wrote:
>On Wed, Oct 22, 2014 at 8:19 PM, Tim Shen <timshen@google.com> wrote:
>> Committed. Thank you too!
>
>I'm backporting this patch to gcc-4_9-branch. Do we usually boot &
>test it and then commit directly, or it should be reviewed again?

I approved it for the branch (in the bugzilla comments) so usually you
could just test it and commit it ... but since you asked ... maybe you
should leave the _M_word_boundary signature unchanged for the branch,
since the unused parameter doesn't do any harm and removing it isn't
needed for the fix to work.