Then you do not know the definition of a Christian. A Christian is a person who believes in the Trinity, God creator outside of creation, God human having visited his creation, God in Spirit form. All Catholics trinitarians, therefore all are Christians.
Now.
The "Church" is an entirely different matter.
It is the target of Satan, and has been for thousands of years. Still is. According to prophecy, always will be. But, also, bible says those who endure with faith (the human Catholics) will be saved. Same with any other Christian that is a member of some corrupt church of any other denomination of Christian.