Give this a temporary output so it is cleaned up.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191917 91177308-0d34-0410-b5e6-96231b3b80d8
Make this use -### instead of a temporary output.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191921 91177308-0d34-0410-b5e6-96231b3b80d8