http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57440
--- Comment #8 from DrD <demonskull1 at gmail dot com> --- (In reply to Jonathan Wakely from comment #7) > You didn't answer the question about which mingw compiler you are using, the > standard mingw gcc does not support std::async. >From my first post: "I compile it with gcc 4.7.2 (MinGW 4.7.2) in Qt 5.0.1, Qt Creator 2.6.2." Is that what you need or are you after some other detail I have omitted?