diff --git a/lib/CodeGen/ModuleBuilder.cpp b/lib/CodeGen/ModuleBuilder.cpp
index 896464e..9b85df6 100644
--- a/lib/CodeGen/ModuleBuilder.cpp
+++ b/lib/CodeGen/ModuleBuilder.cpp
@@ -83,6 +83,13 @@
       if (Builder)
         Builder->Release();
     };
+
+    virtual void CompleteTentativeDefinition(VarDecl *D) {
+      if (Diags.hasErrorOccurred())
+        return;
+
+      Builder->EmitTentativeDefinition(D);
+    }
   };
 }