From f6a85e2e049f59f9823850db91f931dfe4070a14 Mon Sep 17 00:00:00 2001
From: Aleksey Gurtovoy <agurtovoy@meta-comm.com>
Date: Sun, 15 Sep 2002 02:42:47 +0000
Subject: [PATCH] MSVC 6.5 ICE fix

[SVN r15325]
---
 include/boost/python/class.hpp | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/include/boost/python/class.hpp b/include/boost/python/class.hpp
index 6480b817..7f769739 100644
--- a/include/boost/python/class.hpp
+++ b/include/boost/python/class.hpp
@@ -85,7 +85,15 @@ namespace detail
       SelectHolder::register_();
   }
 
-  template <class T> int assert_default_constructible(T const&);
+  template <class T>
+  struct assert_default_constructible
+  {
+      static int check2(T const&);
+      static int check()
+      {
+          return sizeof(check2(T()));
+      }
+  };
 }
 
 //
@@ -280,6 +288,7 @@ class class_ : public objects::class_base
     // Define the default constructor.
     self& def_init()
     {
+        detail::assert_default_constructible<T>::check();
         this->def_init(mpl::list0<>::type());
         return *this;
     }
@@ -419,7 +428,6 @@ inline class_<T,X1,X2,X3>::class_()
     : base(typeid(T).name(), id_vector::size, id_vector().ids)
 {
     this->register_();
-    detail::force_instantiate(sizeof(detail::assert_default_constructible(T())));
     this->def_init();
     this->set_instance_size(holder_selector::additional_size());
 }
@@ -437,7 +445,6 @@ inline class_<T,X1,X2,X3>::class_(char const* name, char const* doc)
     : base(name, id_vector::size, id_vector().ids, doc)
 {
     this->register_();
-    detail::force_instantiate(sizeof(detail::assert_default_constructible(T())));
     this->def_init();
     this->set_instance_size(holder_selector::additional_size());
 }