Tests/RunCMake/Policy/InvalidMaxVersion.cmake - third_party/github.com/Kitware/CMake - Git at Google

 if(NOT version)
   message(SEND_ERROR "Vesrion string is empty: ${version}")
 endif()

 cmake_policy(VERSION 3.1...${version})
	if(NOT version)
	message(SEND_ERROR "Vesrion string is empty: ${version}")
	endif()

	cmake_policy(VERSION 3.1...${version})