vector related memory allocation question
- by memC
hi all, I am encountering the following bug.
I have a class Foo . Instances of this class are stored in a std::vector vec of class B.
in class Foo, I am creating an instance of class A by allocating memory using new and deleting that object in ~Foo().
the code compiles, but I get a crash at the runtime. If I disable delete my_a from desstructor of class Foo. The code runs fine (but there is going to be a memory leak).
Could someone please explain what is going wrong here and suggest a fix?
thank you!
class A{
public:
A(int val);
~A(){};
int val_a;
};
A::A(int val){
val_a = val;
};
class Foo {
public:
Foo();
~Foo();
void createA();
A* my_a;
};
Foo::Foo(){
createA();
};
void Foo::createA(){
my_a = new A(20);
};
Foo::~Foo(){
delete my_a;
};
class B {
public:
vector<Foo> vec;
void createFoo();
B(){};
~B(){};
};
void B::createFoo(){
vec.push_back(Foo());
};
int main(){
B b;
int i =0;
for (i = 0; i < 5; i ++){
std::cout<<"\n creating Foo";
b.createFoo();
std::cout<<"\n Foo created";
}
std::cout<<"\nDone with Foo creation";
std::cout << "\nPress RETURN to continue...";
std::cin.get();
return 0;
}
