# std::nothrow_t

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< cpp‎ | memory‎ | new

Defined in header `<new>` |  |
struct nothrow_t {}; |  | (until C++17)
struct nothrow_t { explicit nothrow_t() = default; }; |  | (since C++17)

`std::nothrow_t` is an empty class type used to disambiguate the overloads of throwing and non-throwing allocation functions.

### See also

nothrow | an object of type `nothrow_t` used to select an non-throwing allocation function (constant)
operator new operator new[] | allocation functions (function)

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