QNetworkAccessManager crash with deleting parent pointer

[amleto]

only posting limited code is really annoying - hiding context doesnt help!

how are Class1 'new'd ? do they have parents? If they have a parent, you should not 'delete' it.

where is this

for(int i=0; i< list.count(); i++)
    {
        Class1* t = (Class1*)list.at(i);
        t->stop();
        delete t;
    }

for(int i=0; i< list.count(); i++)
    {
        Class1* t = (Class1*)list.at(i);
        t->stop();
        delete t;
    }

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? what class? what function?

Why does class1 control the others' scope when it seems like it should be the most independant class?

Have you used the dubugger? I'm sure it gave you more information than 'crash'. Why didnt you include that here?