c++ - Is there any trick to detect if an object is created during execution of another destructor? -

c++ - Is there any trick to detect if an object is created during execution of another destructor? -

this kind of follow on why cant alexandrescu utilize std::uncaught_exception() implement scope_fail in scopeguard11?

i observe if creating myclass in destructor of class (or active destructor somewhere in phone call stack).

class myclass { public: myclass(){ assert(???what set here????); } } void f(){ myclass m; //whether asserts should context dependant } class otherclass{ ~otherclass(){ myclass m; //this should assert f(); //this should too; } } int main() { myclass m; //this should not assert f(); //this should not assert }

one effort might be:

assert(!std::uncaught_exception());

but work if destructor beingness invoked because of exception, not if invoked because object went out of scope.

you cannot observe , don't want to. it's not class's business. if phone call noexcept destructor, grab exceptions

c++ destructor uncaught-exception stack-unwinding