diff --git a/lib/Sema/SemaAccess.cpp b/lib/Sema/SemaAccess.cpp
index 7d58ea7..2ac9a53 100644
--- a/lib/Sema/SemaAccess.cpp
+++ b/lib/Sema/SemaAccess.cpp
@@ -10,3 +10,30 @@
 // This file provides Sema routines for C++ access control semantics.
 //
 //===----------------------------------------------------------------------===//
+
+#include "Sema.h"
+using namespace clang;
+
+bool Sema::SetMemberAccessSpecifier(NamedDecl *MemberDecl, 
+                                    NamedDecl *PrevMemberDecl,
+                                    AccessSpecifier LexicalAS) {
+  if (!PrevMemberDecl) {
+    // Use the lexical access specifier.
+    MemberDecl->setAccess(LexicalAS);
+    return false;
+  }
+  
+  // C++ [class.access.spec]p3: When a member is redeclared its access
+  // specifier must be same as its initial declaration.
+  if (LexicalAS != AS_none && LexicalAS != PrevMemberDecl->getAccess()) {
+    Diag(MemberDecl->getLocation(), 
+         diag::err_class_redeclared_with_different_access) 
+      << MemberDecl << LexicalAS;
+    Diag(PrevMemberDecl->getLocation(), diag::note_previous_access_declaration)
+      << PrevMemberDecl << PrevMemberDecl->getAccess();
+    return true;
+  }
+  
+  MemberDecl->setAccess(PrevMemberDecl->getAccess());
+  return false;
+}