September 01, 1998
Extending the Reference-Counting Pattern
September 1998/Extending the Reference-Counting Pattern/Figure 1
void foo(Object* obj)
{
Object* tmp = obj;
tmp->something();
}
void func()
{
Object* obj = new Object;
foo(obj);
obj->something();
}
void foo(auto_ptr<Object> obj)
{
auto_ptr<Object> tmp = obj;
tmp->something();
// tmp owns the Object data
// and deletes them when goes
// out of visibility scope.
}
void func()
{
auto_ptr<Object> obj = new Object;
foo(obj);
// Object data has been deleted
// within foo().
// obj points nowhere!
obj->something(); // A problem.
}
//End of File
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