From 8f41e88f85adcb4189dcbb07e4bd8ef8d7894593 Mon Sep 17 00:00:00 2001
From: Jeremy Siek <jeremy.siek@gmail.com>
Date: Thu, 25 Jan 2001 04:57:16 +0000
Subject: [PATCH] fixed bug in assignment operator under VC++, which was the
 cause of   the access violation error in graph/test/graph.cpp. The root   of
 this bug is in compressed pair, which VC++ has a hard time   generating a
 correct operator= for.

[SVN r8767]
---
 include/boost/pending/iterator_adaptors.hpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/boost/pending/iterator_adaptors.hpp b/include/boost/pending/iterator_adaptors.hpp
index 8ceb505..f4a5b12 100644
--- a/include/boost/pending/iterator_adaptors.hpp
+++ b/include/boost/pending/iterator_adaptors.hpp
@@ -333,6 +333,14 @@ public:
       policies().initialize(iter());
     }
 
+#ifdef BOOST_MSVC
+    // This is required to prevent a bug in how VC++ generates
+    // the assignment operator for compressed_pair.
+    iterator_adaptor& operator= (const iterator_adaptor& x) {
+        m_iter_p = x.m_iter_p;
+        return *this;
+    }
+#endif
     reference operator*() const {
         return policies().dereference(type<reference>(), iter());
     }