Fix typo in r184308.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@184391 91177308-0d34-0410-b5e6-96231b3b80d8
Add a few more tests for casts.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@184392 91177308-0d34-0410-b5e6-96231b3b80d8
One more cast test.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@184393 91177308-0d34-0410-b5e6-96231b3b80d8