Re: [Boost-users] Boost::MultiIndex dtor problem

From: Joaquín Mª López Muñoz (joaquin_at_[hidden])
Date: 2006-02-16 06:19:23

Martin Eigel ha escrito:

> Hi list,
>
> I am encountering a problem with MultiIndex which can
> be resolved by disabling SAFE_MODE. As I actually do
> not get the problem in the code attached below I'd
> like to ask for an explanation. The marked line of
> code (i.e. the second iterator assignment) seems to be
> responsible for blocking MultiIndex's dtor in
>
> safe_mode.hpp:
> void detach_all_iterators()
> {
>     for(safe_iterator_base*
> it=header.next;it;it=it->next)it->cont=0;
> }
>
> Why is this and how can it correctly be avoided?
>

Hello Martin,

Thank you very much for reporting the problem and providing a
reproducible test case. This is a bug in the library, please try
replacing
the definition of detach_all_iterators in safe_mode.hpp with the
following:

  void detach_all_iterators()
  {
    for(safe_iterator_base* it=header.next;it;it=it->next)it->cont=0;
    header.next=0;
  }

This will eliminate the blocking you observe in safe mode, please report

back. I'll be also committing this fix to the CVS asap.

Thanks for using Boost.MultiIndex and for contributing to improve it,

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo