[Interest] qobject_cast

Igor Mironchik igor.mironchik at gmail.com
Thu Apr 20 18:45:09 CEST 2017

20.04.2017 19:35, Igor Mironchik пишет:
> Hi,
>>> QObject has virtual destructor... dynamic_cast will work. But it 
>>> doesn't
>>> matter, the problem was in another...
>> If your class has virtual functions or derives from such base class, 
>> and have
>> inline (or default) virtual destructor,its  v-table will be emitted 
>> in each
>> translation unit. This is undesirable and can lead to subtle 
>> problems. See e.g.
>> http://llvm.org/docs/CodingStandards.html#provide-a-virtual-method-anchor-for-classes-in-headers 
> There said that it can lead just to increasing objects size in linking 
> time. What problems may appear?

* increasing of .obj file size and linking time *

Yes, it's a problem, but not critical to me.

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