(2014/07/31 1:48), wkwood / gmail.com wrote:
> Well the reproducibility issue appears to be a toolset problem.  If I build with -O2 the code works fine.  I think ultimately the optimizations (O3) for gcc 4.7.2 at least with the mingw toolset are causing the issue here for windows.  I've subsequently built with the mingw 4.9.1 toolset and it works fine with O3, so I guess there's a 4.7.2 gcc bug that's in the way here.

Couldn't you try the trunk?