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diff --git a/src/boost/libs/contract/test/destructor/decl.hpp b/src/boost/libs/contract/test/destructor/decl.hpp
new file mode 100644
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+++ b/src/boost/libs/contract/test/destructor/decl.hpp
@@ -0,0 +1,145 @@
+
+#ifndef BOOST_CONTRACT_TEST_DESTRUCTOR_DECL_HPP_
+#define BOOST_CONTRACT_TEST_DESTRUCTOR_DECL_HPP_
+
+// Copyright (C) 2008-2018 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0 (see accompanying
+// file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
+// See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
+
+// Test with and without pre, post, and inv declarations.
+
+#include "../detail/oteststream.hpp"
+#include <boost/contract/destructor.hpp>
+#include <boost/contract/base_types.hpp>
+#include <boost/contract/check.hpp>
+#include <boost/contract/assert.hpp>
+#include <boost/config.hpp>
+
+boost::contract::test::detail::oteststream out;
+
+bool c_pre = true, c_post = true;
+bool c_entering_static_inv = true, c_entry_static_inv = true,
+        c_exit_static_inv = true;
+bool c_entry_inv = true; // Only entry non-static inv for dtors.
+struct c {
+    #ifndef BOOST_CONTRACT_TEST_NO_C_STATIC_INV
+        static void static_invariant() {
+            out << "c::static_inv" << std::endl;
+            if(c_entering_static_inv) BOOST_CONTRACT_ASSERT(c_entry_static_inv);
+            else BOOST_CONTRACT_ASSERT(c_exit_static_inv);
+            c_entering_static_inv = false;
+        }
+    #endif
+    #ifndef BOOST_CONTRACT_TEST_NO_C_INV
+        void invariant() const {
+            out << "c::inv" << std::endl;
+            BOOST_CONTRACT_ASSERT(c_entry_inv);
+        }
+    #endif
+
+    virtual ~c() BOOST_NOEXCEPT_IF(false) {
+        boost::contract::check c = boost::contract::destructor(this)
+            #ifdef BOOST_CONTRACT_TEST_NO_C_PRE
+                #error "destructors cannot have preconditions"
+            #endif
+            .old([] { out << "c::dtor::old" << std::endl; })
+            #ifndef BOOST_CONTRACT_TEST_NO_C_POST
+                .postcondition([] {
+                    out << "c::dtor::post" << std::endl;
+                    BOOST_CONTRACT_ASSERT(c_post);
+                })
+            #endif
+        ;
+        out << "c::dtor::body" << std::endl;
+    }
+};
+
+bool b_pre = true, b_post = true;
+bool b_entering_static_inv = true, b_entry_static_inv = true,
+        b_exit_static_inv = true;
+bool b_entry_inv = true; // Only entry non-static inv for dtors.
+struct b
+    #define BASES public c
+    : BASES
+{
+    typedef BOOST_CONTRACT_BASE_TYPES(BASES) base_types;
+    #undef BASES
+
+    #ifndef BOOST_CONTRACT_TEST_NO_B_STATIC_INV
+        static void static_invariant() {
+            out << "b::static_inv" << std::endl;
+            if(b_entering_static_inv) BOOST_CONTRACT_ASSERT(b_entry_static_inv);
+            else BOOST_CONTRACT_ASSERT(b_exit_static_inv);
+            b_entering_static_inv = false;
+        }
+    #endif
+    #ifndef BOOST_CONTRACT_TEST_NO_B_INV
+        void invariant() const {
+            out << "b::inv" << std::endl;
+            BOOST_CONTRACT_ASSERT(b_entry_inv);
+        }
+    #endif
+
+    virtual ~b() BOOST_NOEXCEPT_IF(false) {
+        boost::contract::check c = boost::contract::destructor(this)
+            #ifdef BOOST_CONTRACT_TEST_NO_B_PRE
+                #error "destructors cannot have preconditions"
+            #endif
+            .old([] { out << "b::dtor::old" << std::endl; })
+            #ifndef BOOST_CONTRACT_TEST_NO_B_POST
+                .postcondition([] {
+                    out << "b::dtor::post" << std::endl;
+                    BOOST_CONTRACT_ASSERT(b_post);
+                })
+            #endif
+        ;
+        out << "b::dtor::body" << std::endl;
+    }
+};
+
+bool a_pre = true, a_post = true;
+bool a_entering_static_inv = true, a_entry_static_inv = true,
+        a_exit_static_inv = true;
+bool a_entry_inv = true; // Only entry non-static inv for dtors.
+struct a
+    #define BASES public b
+    : BASES
+{
+    typedef BOOST_CONTRACT_BASE_TYPES(BASES) base_types;
+    #undef BASES
+
+    #ifndef BOOST_CONTRACT_TEST_NO_A_STATIC_INV
+        static void static_invariant() {
+            out << "a::static_inv" << std::endl;
+            if(a_entering_static_inv) BOOST_CONTRACT_ASSERT(a_entry_static_inv);
+            else BOOST_CONTRACT_ASSERT(a_exit_static_inv);
+            a_entering_static_inv = false;
+        }
+    #endif
+    #ifndef BOOST_CONTRACT_TEST_NO_A_INV
+        void invariant() const {
+            out << "a::inv" << std::endl;
+            BOOST_CONTRACT_ASSERT(a_entry_inv);
+        }
+    #endif
+
+    virtual ~a() BOOST_NOEXCEPT_IF(false) {
+        boost::contract::check c = boost::contract::destructor(this)
+            #ifdef BOOST_CONTRACT_TEST_NO_A_PRE
+                #error "destructors cannot have preconditions"
+            #endif
+            .old([] { out << "a::dtor::old" << std::endl; })
+            #ifndef BOOST_CONTRACT_TEST_NO_A_POST
+                .postcondition([] {
+                    out << "a::dtor::post" << std::endl;
+                    BOOST_CONTRACT_ASSERT(a_post);
+                })
+            #endif
+        ;
+        out << "a::dtor::body" << std::endl;
+    }
+};
+
+#endif // #include guard
+