1 files changed, 12 insertions, 3 deletions
diff --git a/lib/AST/Decl.cpp b/lib/AST/Decl.cpp
index 1f390eec05..73c83fc66b 100644
--- a/lib/AST/Decl.cpp
+++ b/lib/AST/Decl.cpp
@@ -16,12 +16,13 @@
 #include "clang/AST/DeclObjC.h"
 #include "clang/AST/DeclTemplate.h"
 #include "clang/AST/ASTContext.h"
-#include "clang/AST/TypeLoc.h"
-#include "clang/AST/Stmt.h"
+#include "clang/AST/ASTMutationListener.h"
+#include "clang/AST/Attr.h"
 #include "clang/AST/Expr.h"
 #include "clang/AST/ExprCXX.h"
 #include "clang/AST/PrettyPrinter.h"
-#include "clang/AST/ASTMutationListener.h"
+#include "clang/AST/Stmt.h"
+#include "clang/AST/TypeLoc.h"
 #include "clang/Basic/Builtins.h"
 #include "clang/Basic/IdentifierTable.h"
 #include "clang/Basic/Module.h"
@@ -2844,6 +2845,14 @@ LabelDecl *LabelDecl::CreateDeserialized(ASTContext &C, unsigned ID) {
 
 void ValueDecl::anchor() { }
 
+bool ValueDecl::isWeak() const {
+  for (attr_iterator I = attr_begin(), E = attr_end(); I != E; ++I)
+    if (isa<WeakAttr>(*I) || isa<WeakRefAttr>(*I))
+      return true;
+
+  return isWeakImported();
+}
+
 void ImplicitParamDecl::anchor() { }
 
 ImplicitParamDecl *ImplicitParamDecl::Create(ASTContext &C, DeclContext *DC,