| 1 | // Copyright 2014 Renato Tegon Forti, Antony Polukhin. |
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| 2 | // Copyright Antony Polukhin, 2015-2024. |
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| 3 | // |
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| 4 | // Distributed under the Boost Software License, Version 1.0. |
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| 5 | // (See accompanying file LICENSE_1_0.txt |
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| 6 | // or copy at http://www.boost.org/LICENSE_1_0.txt) |
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| 7 | |
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| 8 | #ifndef BOOST_STACKTRACE_DETAIL_VOID_PTR_CAST_HPP |
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| 9 | #define BOOST_STACKTRACE_DETAIL_VOID_PTR_CAST_HPP |
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| 10 | |
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| 11 | #include <boost/config.hpp> |
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| 12 | #ifdef BOOST_HAS_PRAGMA_ONCE |
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| 13 | # pragma once |
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| 14 | #endif |
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| 15 | |
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| 16 | #include <type_traits> |
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| 17 | |
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| 18 | #if defined(__GNUC__) && defined(__GNUC_MINOR__) && (__GNUC__ * 100 + __GNUC_MINOR__ > 301) |
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| 19 | # pragma GCC system_header |
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| 20 | #endif |
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| 21 | |
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| 22 | namespace boost { namespace stacktrace { namespace detail { |
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| 23 | |
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| 24 | // GCC warns when reinterpret_cast between function pointer and object pointer occur. |
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| 25 | // This functionsuppress the warnings and ensures that such casts are safe. |
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| 26 | template <class To, class From> |
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| 27 | To void_ptr_cast(From* v) noexcept { |
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| 28 | static_assert( |
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| 29 | std::is_pointer<To>::value, |
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| 30 | "`void_ptr_cast` function must be used only for casting to or from void pointers." |
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| 31 | ); |
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| 32 | |
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| 33 | static_assert( |
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| 34 | sizeof(From*) == sizeof(To), |
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| 35 | "Pointer to function and pointer to object differ in size on your platform." |
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| 36 | ); |
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| 37 | |
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| 38 | return reinterpret_cast<To>(v); |
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| 39 | } |
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| 40 | |
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| 41 | |
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| 42 | }}} // boost::stacktrace::detail |
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| 43 | |
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| 44 | #endif // BOOST_STACKTRACE_DETAIL_VOID_PTR_CAST_HPP |
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| 45 | |
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| 46 | |
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