From 7d79d5298f56c4768a90df629b689d1bc3ebbb31 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Thu, 17 Jan 2019 15:48:05 +0300
Subject: Add function_wrapper::cast() that cleanly cast to an incompatible
 function type

---
 odb/details/function-wrapper.hxx | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'odb/details/function-wrapper.hxx')

diff --git a/odb/details/function-wrapper.hxx b/odb/details/function-wrapper.hxx
index 3a8ebfc..165df18 100644
--- a/odb/details/function-wrapper.hxx
+++ b/odb/details/function-wrapper.hxx
@@ -59,6 +59,11 @@ namespace odb
 
       void swap (function_wrapper<F>&);
 
+      // Cleanly cast to an incompatible function type.
+      //
+      template <typename R> R
+      cast () const;
+
       // Conversion to bool.
       //
     public:
-- 
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