| // Copyright 2014 Renato Tegon Forti, Antony Polukhin. |
| // Copyright 2015-2019 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 |
| |