Two <regex> testcases failing for check-debug

[Tim Shen]

On Thu, Aug 15, 2013 at 5:53 PM, Jonathan Wakely <jwakely.gcc@gmail.com> wrote:
> Why not use __s.data() in all cases, instead of &*__s.begin()?  That's
> safe even for an empty vector.

Thanks, I didn't notice that vector's data() is mutable(since string's is not).


Bootstrap Passed, and testsuites with -D_GLIBCXX_DEBUG, with or
without -m32 passed.

Could you please commit this patch for me? I lost my SSH private key :(

Thanks!

-- 
Tim Shen
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