From 7a528eab1561b0d0d4ec29f98355fe67025ea632 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 21 Nov 2016 11:56:00 +0200
Subject: Add support for derived-to-base function overload resolution

---
 build2/variable.ixx | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

(limited to 'build2/variable.ixx')

diff --git a/build2/variable.ixx b/build2/variable.ixx
index 1e9dfe6..4d70685 100644
--- a/build2/variable.ixx
+++ b/build2/variable.ixx
@@ -136,10 +136,9 @@ namespace build2
   inline T&
   cast (value& v)
   {
-    assert (v && v.type == &value_traits<T>::value_type);
-    return *static_cast<T*> (v.type->cast == nullptr
-                             ? static_cast<void*> (&v.data_)
-                             : const_cast<void*> (v.type->cast (v, v.type)));
+    // Forward to const T&.
+    //
+    return const_cast<T&> (cast<T> (static_cast <const value&> (v)));
   }
 
   template <typename T>
-- 
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