Fails to compile with clang-4.0: reinterpret_cast from 'nullptr_t' to 'const GLvoid *' (aka 'const void *') is not allowed
Got this on the FreeBSD 11.1 with clang-4.0:
/usr/ports/math/vtk/work/VTK-8.0.1/Rendering/OpenGL2/vtkOpenGLRenderUtilities.cxx:97:5: error: reinterpret_cast from 'nullptr_t' to 'const GLvoid *' (aka 'const void *') is not allowed
reinterpret_cast<const GLvoid *>(NULL));
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~