Re: [Boost-users] Proper initialization of a boost::shared_ptr<> in a constructor

From: Richard Dingwall (rdingwall_at_[hidden])
Date: 2007-03-22 19:33:24

You're not passing an input_value parameter?

e.g.

               A_User ()
               : m_a_ptr ( new A(42) )
               {}

Richard

On 3/23/07, Stephen Torri <storri_at_[hidden]> wrote:
> I am attempting to hunt down why I am getting a segmentation fault from
> the boost::shared_ptr class. I know that it has to do with how I am
> managing my shared pointers. That is creating and using them in
> functions. I am reading the best practices web page and I have a
> question about the best way to initialize a shared_ptr.
>
> Normally I have a class like the following:
>
>         class A {
>         public:
>
>                 typedef boost::shared_ptr<A> ptr_t;
>
>                 A ( int input_value )
>                 : value ( input_value )
>                 {}
>
>         private:
>                 int value;
>         };
>
> Which I will use in another place:
>
>         class A_User {
>         public:
>
>                 A_User ()
>                 : m_a_ptr ( new A() )
>                 {}
>
>         private:
>
>                 A::ptr_t m_a_ptr;
>         };
>
> Is this the correct way to initialize the A::ptr_t held in the A_User
> class in its constructor?
>
> Stephen
>
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