std::pmr::synchronized_pool_resource::do_is_equal
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                    < cpp | memory | synchronized pool resource
                    
                                                            
                    | virtual bool do_is_equal(const std::pmr::memory_resource& other) const; | (since C++17) | |
Compare *this with other for identity - memory allocated using a synchronized_pool_resource can only be deallocated using that same resource.
Return value
this == dynamic_cast<const synchronized_pool_resource*>(&other)
Exceptions
noexcept specification:  
noexcept
  See also
| [virtual] | compare for equality with another memory_resource(virtual private member function of std::pmr::memory_resource) |