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+// Copyright 2014 Renato Tegon Forti, Antony Polukhin.
+// Copyright 2015-2017 Antony Polukhin.
+//
+// Distributed under 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)
+
+#ifndef BOOST_STACKTRACE_DETAIL_VOID_PTR_CAST_HPP
+#define BOOST_STACKTRACE_DETAIL_VOID_PTR_CAST_HPP
+
+#include <boost/config.hpp>
+#ifdef BOOST_HAS_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <boost/static_assert.hpp>
+#include <boost/type_traits/is_pointer.hpp>
+
+#if defined(__GNUC__) && defined(__GNUC_MINOR__) && (__GNUC__ * 100 + __GNUC_MINOR__ > 301)
+# pragma GCC system_header
+#endif
+
+namespace boost { namespace stacktrace { namespace detail {
+
+// GCC warns when reinterpret_cast between function pointer and object pointer occur.
+// This functionsuppress the warnings and ensures that such casts are safe.
+template <class To, class From>
+To void_ptr_cast(From* v) BOOST_NOEXCEPT {
+ BOOST_STATIC_ASSERT_MSG(
+ boost::is_pointer<To>::value,
+ "`void_ptr_cast` function must be used only for casting to or from void pointers."
+ );
+
+ BOOST_STATIC_ASSERT_MSG(
+ sizeof(From*) == sizeof(To),
+ "Pointer to function and pointer to object differ in size on your platform."
+ );
+
+ return reinterpret_cast<To>(v);
+}
+
+
+}}} // boost::stacktrace::detail
+
+#endif // BOOST_STACKTRACE_DETAIL_VOID_PTR_CAST_HPP
+