c++11 - how to handle double free crash in c++ -

deleting double pointer cause harmful effect crash program , programmer should try avoid not allowed. sometime if doing how take care of this. delete in c++ noexcept operator , it'll not throw exceptions. , written type void. how catch kind of exceptions. below code snippet

class myexception: public std::runtime_error {     public:         myexception(std::string const& msg):             std::runtime_error(msg)         {             cout<<"inside class \n";             } };  void main() {  int* set = new int[100]; cout <<"memory allcated \n"; //use set[] delete [] set;  cout <<"after delete first \n"; try{ delete [] set;  throw myexception("error while deleting data \n"); } catch(std::exception &e) {     cout<<"exception \n"; } catch(...) {     cout<<"generic catch \n"; }  cout <<"after delete second \n"; 

in case tried catch exception no success. pleas provide input how we'll take care of these type of scenario. in advance!!!

given behaviour on subsequent delete[] undefined, there's nothing can do, aside writing

set = nullptr;

immediately after first delete[]. exploits fact deletion of nullptr no-op.

but really, encourages programmers sloppy.