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29 /// \file utils/shard_ptr.hpp
30 /// Compatibility header to import std::shared_ptr.
32 #if !defined(UTILS_SHARED_PTR_HPP)
33 #define UTILS_SHARED_PTR_HPP
37 #if defined(_LIBCPP_VERSION) || __cplusplus >= 201103L
40 # include <tr1/memory>
42 using tr1::shared_ptr
;
46 #endif // !defined(UTILS_SHARED_PTR_HPP)