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b32b8144 | 1 | // Copyright 2014 Renato Tegon Forti, Antony Polukhin. |
1e59de90 | 2 | // Copyright Antony Polukhin, 2015-2022. |
b32b8144 FG |
3 | // |
4 | // Distributed under the Boost Software License, Version 1.0. | |
5 | // (See accompanying file LICENSE_1_0.txt | |
6 | // or copy at http://www.boost.org/LICENSE_1_0.txt) | |
7 | ||
8 | #ifndef BOOST_STACKTRACE_DETAIL_VOID_PTR_CAST_HPP | |
9 | #define BOOST_STACKTRACE_DETAIL_VOID_PTR_CAST_HPP | |
10 | ||
11 | #include <boost/config.hpp> | |
12 | #ifdef BOOST_HAS_PRAGMA_ONCE | |
13 | # pragma once | |
14 | #endif | |
15 | ||
16 | #include <boost/static_assert.hpp> | |
17 | #include <boost/type_traits/is_pointer.hpp> | |
18 | ||
19 | #if defined(__GNUC__) && defined(__GNUC_MINOR__) && (__GNUC__ * 100 + __GNUC_MINOR__ > 301) | |
20 | # pragma GCC system_header | |
21 | #endif | |
22 | ||
23 | namespace boost { namespace stacktrace { namespace detail { | |
24 | ||
25 | // GCC warns when reinterpret_cast between function pointer and object pointer occur. | |
26 | // This functionsuppress the warnings and ensures that such casts are safe. | |
27 | template <class To, class From> | |
28 | To void_ptr_cast(From* v) BOOST_NOEXCEPT { | |
29 | BOOST_STATIC_ASSERT_MSG( | |
30 | boost::is_pointer<To>::value, | |
31 | "`void_ptr_cast` function must be used only for casting to or from void pointers." | |
32 | ); | |
33 | ||
34 | BOOST_STATIC_ASSERT_MSG( | |
35 | sizeof(From*) == sizeof(To), | |
36 | "Pointer to function and pointer to object differ in size on your platform." | |
37 | ); | |
38 | ||
39 | return reinterpret_cast<To>(v); | |
40 | } | |
41 | ||
42 | ||
43 | }}} // boost::stacktrace::detail | |
44 | ||
45 | #endif // BOOST_STACKTRACE_DETAIL_VOID_PTR_CAST_HPP | |
46 |