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std::allocator_arg, std::allocator_arg_t

From cppreference.com
< cpp‎ | memory
 
C++
 
Memory management library
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(C++11)(until C++23)
(C++11)(until C++23)
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(C++11)(until C++23)
 
Defined in header <memory>
struct allocator_arg_t { explicit allocator_arg_t() = default; };
 (1) (since C++11)
constexpr std::allocator_arg_t allocator_arg {};
 (2) (since C++11)
(inline since C++17)
1) std::allocator_arg_t is an empty class type used to disambiguate the overloads of constructors and member functions of allocator-aware objects, including