> On 18 Aug 2016, at 16:03, Min Wang <mingew...@gmail.com> wrote:

> So I should use 
> 
> %type <PROG> PROG                                                             
>  
> 
> instead of  
> 
> %type <PROG*> PROG  

> Thus I do not need %destructor at all?

If you write a proper C++ type T with T::~T destructor, then %destructor should 
not be used, nor explicit deallocation in the actions.


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