[Bug libstdc++/52015] std::to_string does not work under MinGW

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52015

--- Comment #7 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-02-27 
18:41:36 UTC ---
I see. Definitely post 4.7.0 then.