Initial implementation of anonymous unions (and, as a GNU extension,
structures and classes) in C++. Covers name lookup and the synthesis
and member access for the unnamed objects/fields associated with
anonymous unions.

Some C++ semantic checks are still missing (anonymous unions can't
have function members, static data members, etc.), and there is no
support for anonymous structs or unions in C.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61840 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/Decl.cpp b/lib/AST/Decl.cpp
index bfe0272..bfe8a18 100644
--- a/lib/AST/Decl.cpp
+++ b/lib/AST/Decl.cpp
@@ -290,7 +290,7 @@
 }
 
 //===----------------------------------------------------------------------===//
-// TagdDecl Implementation
+// TagDecl Implementation
 //===----------------------------------------------------------------------===//
 
 TagDecl* TagDecl::getDefinition(ASTContext& C) const {
@@ -308,6 +308,7 @@
   : TagDecl(DK, TK, DC, L, Id, 0), DeclContext(DK) {
   
   HasFlexibleArrayMember = false;
+  AnonymousStructOrUnion = false;
   assert(classof(static_cast<Decl*>(this)) && "Invalid Kind!");
 }