When a class has virtual method, you need to write a virtual destructor to properly free the memory in the destructor.
In my case, I don't have a virtual method in the class and neither any sub-classes.
When I compile the program using gcc with "-Wdelete-non-virtual-dtor" flag I get a warning.Rewriting the destructor as virtual indeed removes the warning, but I don't want to rewrite the destructor of the class as virtual since it doesn't have any sub-classes. Is there any way to suppress the warning "-Wdelete-non-virtual-dtor" and tell the compiler there is no inheritance - sub-classes for this class?It's not a specific gcc version or gcc question.
UPDATE:Discovered that my class has inheritance of other class that has virtual functions and thus itself has virtual functions.
The accept answer was that I missed that the class is indeed virtual (since it inherits another class with virtual functions). Since it doesn't have sub-classes and should have ones, I can add "final" keyword to the class to solved the issue.
Simple code example:
#include <iostream>class A { public: int a; virtual void f() {};};template<class T> void foo() { T *obj = new T; delete obj;}int main(){ foo<A>(); std::cout << "Done"<< std::endl;}Adding final to class A - also removed the warning.