> Em 11 de set de 2021, à(s) 13:51, John Emmas via Boost-users 
> <boost-users@lists.boost.org> escreveu:
> On 11/09/2021 12:11, Joaquin M López Muñoz via Boost-users wrote:
>> 
>> So, you have two options:
>> 
>> * Make sure that elements are removed from lists before being destroyed
>> * Activate auto-unlink mode for your lists
> 
> Thanks Jaoquin - after reading that article it looked like I'd need to change 
> all occurrences of:-
> 
>    public boost::intrusive::list_base_hook<>
> 
> to be this:-
> 
>    public boost::intrusive::list_base_hook< 
> boost::intrusive::link_mode<boost::intrusive::auto_unlink> >
> 
> but after doing that, all compiles now trigger a new assert in 
> 'boost/intrusive/list.hpp':-
> 
>   //Constant-time size is incompatible with auto-unlink hooks!
>   BOOST_STATIC_ASSERT(!(constant_time_size &&
>                        ((int)value_traits::link_mode == (int)auto_unlink)
>                      ));
The comment above the assert says it all. Take a look at how  
constant_time_size<false> is used in the docs for auto-unlink hooks. 

Joaquín M López Muñoz 
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