From 5c1dfd8c646aa3ff1326be3c4438ec4e9d178141 Mon Sep 17 00:00:00 2001
From: Jean-Louis Leroy <jl@leroy.nyc>
Date: Sun, 15 Jun 2025 10:54:32 -0400
Subject: [PATCH] virtual_ptr: deduction guide for rvalue references

---
 include/boost/openmethod/core.hpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/boost/openmethod/core.hpp b/include/boost/openmethod/core.hpp
index b391920..7fda020 100644
--- a/include/boost/openmethod/core.hpp
+++ b/include/boost/openmethod/core.hpp
@@ -798,6 +798,13 @@ class virtual_ptr : public detail::virtual_ptr_impl<Class, Registry> {
 template<class Class>
 virtual_ptr(Class&) -> virtual_ptr<Class, BOOST_OPENMETHOD_DEFAULT_REGISTRY>;
 
+template<class Class>
+virtual_ptr(Class&&) -> virtual_ptr<Class, BOOST_OPENMETHOD_DEFAULT_REGISTRY>;
+
+// Alas this is not allowed:
+// template<class Registry, class Class>
+// virtual_ptr<Registry>(Class&) -> virtual_ptr<Class, Registry>;
+
 template<class Registry, class Class>
 inline auto final_virtual_ptr(Class&& obj) {
     return virtual_ptr<std::remove_reference_t<Class>, Registry>::final(