[Numpy-discussion] Build doesn't pass tests

Hi all! I'm trying to build numpy on Windows 64 bit, Python 3.4.2 64 bit. I do environment setup by the following command: CMD /K "SET MSSdk=1 && SET DISTUTILS_USE_SDK=1 && "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\vcvarsall.bat" x86_amd64" Then I cd to the newly cloned numpy folder and do: python setup.py build_ext --inplace It looks like the build process finishes correctly. But then python -c "import numpy; numpy.test()" crashes the interpreter (some tests pass before the crash). I found out that it is caused by numpy.fromfile function call. What might be the reason of that? Do I use wrong msvc compiler?