From 06ea541ed955e931668a032fc5d9ac096d37e088 Mon Sep 17 00:00:00 2001
From: Vijay Pai <vpai@google.com>
Date: Wed, 15 Jun 2016 10:57:50 -0700
Subject: Provide nullptr->std::function cast

---
 include/grpc++/impl/codegen/config.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'include/grpc++')

diff --git a/include/grpc++/impl/codegen/config.h b/include/grpc++/impl/codegen/config.h
index d782d5f571..cf88efa1d1 100644
--- a/include/grpc++/impl/codegen/config.h
+++ b/include/grpc++/impl/codegen/config.h
@@ -78,6 +78,7 @@
 #endif
 
 #ifdef GRPC_CXX0X_NO_NULLPTR
+#include <functional>
 #include <memory>
 namespace grpc {
 const class {
@@ -95,6 +96,10 @@ const class {
     return std::shared_ptr<T>(static_cast<T *>(0));
   }
   operator bool() const { return false; }
+  template <class F>
+  operator std::function<F>() const {
+    return std::function<F>();
+  }
 
  private:
   void operator&() const = delete;
-- 
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