// 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
|
