Hi Koen,

On 27.04.2012 17:05, Koen Deforche wrote:
> Hey Stefan,
>
> Op 27 april 2012 16:04 heeft Stefan Ruppert<[email protected]>  het
> volgende geschreven:
>>> When you get the assert, could you get a complete stack trace to see
>>> how sourceRowsRemoved() is part of it ?
>>
>> As you can see here sourceRowsRemoved() is involved:
>>
>> #9  0x00002b977af09472 in Wt::WAbstractProxyModel::shiftModelIndexes #10
>> 0x00002b977b05b46b in Wt::WSortFilterProxyModel::sourceRowsRemoved
>>
>> void
>> WAbstractProxyModel::shiftModelIndexes(const WModelIndex&  sourceParent,
>>                                        int start, int count,
>>                                        ItemMap&  items)
>> {
>>    ...
>>   for (unsigned i = 0; i<  erased.size(); ++i) {
>>      items.erase(erased[i]->sourceIndex_);
>>      // ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This line is the problem
>>      delete erased[i];
>>    }
>>   ...
>> }
>
> Ah, yes, because of how the topological sorting works.
>
> Perhaps everything in sourceRowsRemoved() should be moved to after
> sourceRowsAboutToBeRemoved() ? I'ld be interested if that solves it
> for you (instead of your other change) ?

Currently I'm very busy and therefore I'm happy with the fix found. 
Maybe I have some more time to test this change in june...

Stefan

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