Create AST nodes for namespace aliases.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67962 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/DeclCXX.cpp b/lib/AST/DeclCXX.cpp
index 7c5dbce..2858d47 100644
--- a/lib/AST/DeclCXX.cpp
+++ b/lib/AST/DeclCXX.cpp
@@ -361,6 +361,16 @@
                                     Used, CommonAncestor);
 }
 
+NamespaceAliasDecl *NamespaceAliasDecl::Create(ASTContext &C, DeclContext *DC, 
+                                               SourceLocation L, 
+                                               SourceLocation AliasLoc, 
+                                               IdentifierInfo *Alias, 
+                                               SourceLocation IdentLoc, 
+                                               NamedDecl *Namespace) {
+  return new (C) NamespaceAliasDecl(DC, L, AliasLoc, Alias, IdentLoc, 
+                                    Namespace);
+}
+
 StaticAssertDecl *StaticAssertDecl::Create(ASTContext &C, DeclContext *DC,
                                            SourceLocation L, Expr *AssertExpr,
                                            StringLiteral *Message) {
diff --git a/lib/Sema/SemaDeclCXX.cpp b/lib/Sema/SemaDeclCXX.cpp
index c9a2363..f58125d 100644
--- a/lib/Sema/SemaDeclCXX.cpp
+++ b/lib/Sema/SemaDeclCXX.cpp
@@ -1707,7 +1707,12 @@
     return DeclPtrTy();
   }
   
-  return DeclPtrTy();
+  NamespaceAliasDecl *AliasDecl = 
+    NamespaceAliasDecl::Create(Context, CurContext, NamespaceLoc, AliasLoc, Alias, 
+                               IdentLoc, R);
+  
+  CurContext->addDecl(AliasDecl);
+  return DeclPtrTy::make(AliasDecl);
 }
 
 /// AddCXXDirectInitializerToDecl - This action is called immediately after