std::new_handler
From cppreference.com
                    
                                        
                    
                    
                                                            
                    | Defined in header  <new> | ||
| typedef void (*new_handler)(); | ||
std::new_handler is the function pointer type (pointer to function that takes no arguments and returns void), which is used by the functions std::set_new_handler and std::get_new_handler
[edit] See also
| allocation functions (function) | |
| registers a new handler (function) | |
| (C++11) | obtains the current new handler (function) | 


