ffi/ffi — pull request #392 by rafalbigaj (2014-11-26 08:31:45+00:00)
Title: Memory alignment fix for VS2013 x64

On Windows x64 compilation with VisualStudio 2013 any call to ffi function ends with segmentation fault.
It's caused by invalid memory alignment. The used mask 0x7UL is 32 bit on this platform, 0x7ULL is required.