Create a redeclaration when an elaborated type specifier
resolves to an existing declaration if there are attributes
present.

This gives us something to apply the attributes to.

llvm-svn: 208756
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 67c78ce..c43c881 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -10919,14 +10919,17 @@
         }
 
         if (!Invalid) {
-          // If this is a use, just return the declaration we found.
+          // If this is a use, just return the declaration we found, unless
+          // we have attributes.
 
           // FIXME: In the future, return a variant or some other clue
           // for the consumer of this Decl to know it doesn't own it.
           // For our current ASTs this shouldn't be a problem, but will
           // need to be changed with DeclGroups.
-          if ((TUK == TUK_Reference && (!PrevTagDecl->getFriendObjectKind() ||
-               getLangOpts().MicrosoftExt)) || TUK == TUK_Friend)
+          if (!Attr &&
+              ((TUK == TUK_Reference &&
+                (!PrevTagDecl->getFriendObjectKind() || getLangOpts().MicrosoftExt))
+               || TUK == TUK_Friend))
             return PrevTagDecl;
 
           // Diagnose attempts to redefine a tag.