Add a -pedantic warning: an anonymous union within an anonymous union is not
permitted in standard C++, despite being silently accepted by many (all?) major
C++ implementations.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173643 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed