Anonymous union members within a struct are now properly handled as an unevaluated field in C++11 mode.  This fixes PR12866.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@157784 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaExprMember.cpp b/lib/Sema/SemaExprMember.cpp
index 6af4040..f8bf908 100644
--- a/lib/Sema/SemaExprMember.cpp
+++ b/lib/Sema/SemaExprMember.cpp
@@ -115,7 +115,7 @@
     NamedDecl *D = *I;
 
     if (D->isCXXInstanceMember()) {
-      if (dyn_cast<FieldDecl>(D))
+      if (dyn_cast<FieldDecl>(D) || dyn_cast<IndirectFieldDecl>(D))
         isField = true;
 
       CXXRecordDecl *R = cast<CXXRecordDecl>(D->getDeclContext());