addressof.h

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#pragma once
 
#ifndef DI_NO_USE_STD
#include <memory>
#else
namespace std {
// This uses a compiler builtin because user-defined types can overload operator&.
template<typename T>
constexpr auto addressof(T& value) -> T* {
    return __builtin_addressof(value);
}
 
// Disallow getting the address of a temporary.
template<class T>
auto addressof(T const&&) -> T* = delete;
}
#endif
 
namespace di::util {
using std::addressof;
}
 
namespace di {
using util::addressof;
}