diff --git a/lib/AST/DeclCXX.cpp b/lib/AST/DeclCXX.cpp
index d15cfef..a279eda 100644
--- a/lib/AST/DeclCXX.cpp
+++ b/lib/AST/DeclCXX.cpp
@@ -785,6 +785,12 @@
 }
 
 CXXConstructorDecl *
+CXXConstructorDecl::Create(ASTContext &C, EmptyShell Empty) {
+  return new (C) CXXConstructorDecl(0, SourceLocation(), DeclarationName(),
+                                    QualType(), 0, false, false, false);
+}
+
+CXXConstructorDecl *
 CXXConstructorDecl::Create(ASTContext &C, CXXRecordDecl *RD,
                            SourceLocation L, DeclarationName N,
                            QualType T, TypeSourceInfo *TInfo,
@@ -887,6 +893,12 @@
 }
 
 CXXDestructorDecl *
+CXXDestructorDecl::Create(ASTContext &C, EmptyShell Empty) {
+  return new (C) CXXDestructorDecl(0, SourceLocation(), DeclarationName(),
+                                   QualType(), false, false);
+}
+
+CXXDestructorDecl *
 CXXDestructorDecl::Create(ASTContext &C, CXXRecordDecl *RD,
                           SourceLocation L, DeclarationName N,
                           QualType T, bool isInline,
@@ -903,6 +915,12 @@
 }
 
 CXXConversionDecl *
+CXXConversionDecl::Create(ASTContext &C, EmptyShell Empty) {
+  return new (C) CXXConversionDecl(0, SourceLocation(), DeclarationName(),
+                                   QualType(), 0, false, false);
+}
+
+CXXConversionDecl *
 CXXConversionDecl::Create(ASTContext &C, CXXRecordDecl *RD,
                           SourceLocation L, DeclarationName N,
                           QualType T, TypeSourceInfo *TInfo,
@@ -940,6 +958,12 @@
   return cast_or_null<NamespaceDecl>(NominatedNamespace);
 }
 
+void UsingDirectiveDecl::setNominatedNamespace(NamedDecl* ND) {
+  assert((isa<NamespaceDecl>(ND) || isa<NamespaceAliasDecl>(ND)) &&
+    "expected a NamespaceDecl or NamespaceAliasDecl");
+  NominatedNamespace = ND;
+}
+
 NamespaceAliasDecl *NamespaceAliasDecl::Create(ASTContext &C, DeclContext *DC,
                                                SourceLocation L,
                                                SourceLocation AliasLoc,