http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54988
--- Comment #13 from Kai Koehne <kai.koehne at digia dot com> 2013-03-27 09:12:42 UTC --- The OOM problem is still there with gcc 4.8.0 on MinGW: Any #pragma optimize "X" will result in OOM for big files.