Re: [boost] [iterator] UB when implicitly using default constructed counting_iterator<unsigned>

Subject: Re: [boost] [iterator] UB when implicitly using default constructed counting_iterator<unsigned>
From: Claas H. Köhler (claas.koehler_at_[hidden])
Date: 2012-12-05 08:40:32

On 05/12/12 14:18, "Claas H. Köhler" wrote:
> 
> 
> On 05/12/12 13:48, Olaf van der Spek wrote:
>> Did you try to enable iterator debugging?
> Good point. Originally no. But I retried replacing <vector> by <debug/vector> and accordingly for the
> other container #includes and there is no difference in output nor asserts.
Update: When using the -D_GLIBCXX_DEBUG flag, the code indeed asserts with the following message:
"attempt to compare a singular iterator to a singular iterator"

I guess this also means, that it is possible to detect singular iterators even if they are
initialised upon default construction.