A couple fixes for preprocessor expressions:

1. Be more tolerant of comments in -CC (comment-preserving) mode.  We were missing a few cases.

2. Make sure to expand the second FOO in "#if defined FOO FOO".  (See also
r97253, which addressed the case of "#if defined(FOO FOO".)

Fixes PR10286.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@136748 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed