Enhance Lexer::makeFileCharRange to check for ranges inside a macro argument
expansion, in which case it returns a file range in the location where the
argument was spelled.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148551 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed