Re: [Boost-users] [serialization] Problem with multiple multi-index keys.

From: Toby Smith (tob_at_[hidden])
Date: 2006-01-31 08:31:13

Hi Joaquin,

I rebuilt our full project with this fix, and everything's working  
perfectly again.

Thanks so much for the quick investigation and response!

Best regards,
tob

On Jan 31, 2006, at 3:47 AM, Joaquín Mª López Muñoz wrote:

> Hello Tob,
>
> Toby Smith ha escrito:
>
>> Hi,
>>
>> I'm having a problem serializing a multi-index container.   
>> Serialization
>> used to work fine, until I added a second (non-unique) key to the
>> container.  I've managed to distill the problem down to a small  
>> bit of
>> code, so here it is.  Uncomment the #define to see the segfault at
>> serialization time in action, leave it commented and the example code
>> works fine.  I'm clearly missing something subtle (or not-so- 
>> subtle) here,
>> but I don't have the first clue what it might be.
>
> You're not missing anything, rather you have found a bug in  
> Boost.MultiIndex.
> Could you please replace line 80 in
> boost/multi_index/detail/duplicates_iterator.hpp
>
>     if(pred(begin_chunk->value,node->value))advance();
>
> with the following:
>
>     if(node!=end&&pred(begin_chunk->value(),node->value()))advance();
>
> and check out if this is fixing the problem in your original code?  
> (The snippet
> you sent I have already checked out.) I'll be commiting this change  
> to the
> CVS shortly, thank you very much for spotting the problem and  
> reporting
> about it.
>
> Joaquín M López Muñoz
> Telefónica, Investigación y Desarrollo
>
>
>
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