The implicit definition of a
copy constructor
as defaulted is deprecated if the class has
a user-declared copy assignment operator or
a user-declared
destructor.The implicit definition of a
copy assignment operator
as defaulted is deprecated if the class has
a user-declared copy constructor or
a user-declared destructor
.In a future revision of this International Standard, these implicit definitions
could become deleted (
[dcl.fct.def.delete])
.