Constant expression evaluation: track the manner in which an lvalue was written,
to allow us to implement the C++11 rule that a non-active union member can't be
read, and use it to implement subobject access for string literals.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143677 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed