From 6ca312b3bcdccdd55321dcf7111a50cad37a6c99 Mon Sep 17 00:00:00 2001
From: Samuel Debionne <samuel.debionne@esrf.fr>
Date: Thu, 19 Sep 2019 21:23:03 +0200
Subject: [PATCH] Avoid infinite recursion in is_copy_constructible (#1910)

---
 include/pybind11/cast.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/pybind11/cast.h b/include/pybind11/cast.h
index 67397c4ee..605acb366 100644
--- a/include/pybind11/cast.h
+++ b/include/pybind11/cast.h
@@ -775,7 +775,9 @@ template <typename T, typename SFINAE = void> struct is_copy_constructible : std
 // so, copy constructability depends on whether the value_type is copy constructible.
 template <typename Container> struct is_copy_constructible<Container, enable_if_t<all_of<
         std::is_copy_constructible<Container>,
-        std::is_same<typename Container::value_type &, typename Container::reference>
+        std::is_same<typename Container::value_type &, typename Container::reference>,
+        // Avoid infinite recursion
+        negation<std::is_same<Container, typename Container::value_type>>
     >::value>> : is_copy_constructible<typename Container::value_type> {};
 
 #if !defined(PYBIND11_CPP17)