[solved]qmap::contains fails with segmentation fault
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I don't know what's wrong with this code:
@
QMap<QString,QPersistentModelIndex> rows;
int KeyAbstractModel::getRow(QString key){
if(rows.contains(key))
return rows[key].row();
else return -1;
}
@it crashes whit segfault on rows.contains(key). I think the map contains something; for some reasons, debugger tells me <no such value> on rows. but also with an empty map, contains must work.
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Is this your actual code?
It very much sounds like you are trying to access not only an empty QMap, but a non-existant one.
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yes. in fact I really think this is a qt bug, because the segfault signal comes during execution of qmap.h code. rows is not a null pointer, however. (it's not a pointer :D)
edit: it seems I'm the only person that can solve a segfault problem sobstituting an object with a pointer to it.
I modified rows into a QMap * and in constructor I wrote rows= new QMap<...>(); and now it works properly.
really a strange thing.
Thanks for making me have this idea, and thanks if someone has an hypothesis about this issue.
