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basic_system_executor::query (2 of 3 overloads)

Query the current value of the allocator property.

constexpr Allocator query(
    execution::allocator_t< void > ) const;

Do not call this function directly. It is intended for use with the query customisation point.

For example:

boost::asio::system_executor ex;
auto alloc = boost::asio::query(ex,