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Subject: [Boost-users] [shared_ptr] boost::shared_ptr deleter question
From: Tamas.Ruszkai_at_[hidden]
Date: 2015-08-14 05:07:53

Hi All,

I wonder when the shared_ptr deleter is destroyed.

I have a shared_ptr with a custom deleter. I would expect when the last
shared pointer to the object is gone then not only the deleter method will
be called, but the deleter function object is also released. As I see the
deleter is taken by value and stored by value in the reference counter, so
I do not understand what is going on.

How is the deleter mean to be freed?


struct MyClassDeleter
                // Break point is set here

        void operator()(MyClass* item)
                // Break point is set here

        auto sharedPtr = boost::shared_ptr<MyClass>(new MyClass,

// shared_ptr leaves the scope here, the custom deleter is called
(parenthesis operator)
// the deleter instance is however not destroyed, the breakpoint in the
destructor does not hit

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