http://bugs.winehq.org/show_bug.cgi?id=34066
--- Comment #1 from camillo.lugaresi+wine@gmail.com 2013-07-17 06:04:24 CDT --- I tried building Wine with gcc 4.8 (but still using clang for the Mac driver). The (seemingly) infinite loop on the first run still occurs. However, when attempting to install Steam, the installer is able to proceed past the first screen.
It seems that we have two different bugs here, only one of which seems Clang-specific.