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-rw-r--r--src/boost/libs/optional/test/optional_test_fail1.cpp25
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diff --git a/src/boost/libs/optional/test/optional_test_fail1.cpp b/src/boost/libs/optional/test/optional_test_fail1.cpp
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+// Copyright (C) 2003, Fernando Luis Cacciola Carballal.
+//
+// Use, modification, and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/lib/optional for documentation.
+//
+// You are welcome to contact the author at:
+// fernando_cacciola@hotmail.com
+//
+#include "boost/optional.hpp"
+
+//
+// THIS TEST SHOULD FAIL TO COMPILE
+//
+void test_deep_constantness()
+{
+ boost::optional<int> opt ;
+ boost::optional<int> const copt ;
+
+ *copt = opt ; // Cannot assign to "int const&"
+}
+
+