http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57440
--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> --- Some other detail. I don't care about Qt Creator, it's not a compiler, and the version of Qt is compeltely irrelevant because you're not using Qt. I don't believe you can be using Mingw 4.7.2, because that doesn't support std::async(). What does 'gcc -v' show?
