On Thursday 31 August 2006 13:27, Caleb Tennis wrote:
> As a bonus:
>
> The memory leak in the marshall_QString is occurring on a signal/slot
> connected like this:
>
> connect(o1, SIGNAL('sig(QString &)'), o2, SLOT('slt(QString &)') )
>
> The leak goes away when I change both of those to "const QString &".
> Changing them to just "QString" and the leak seems to persist.
Well the code to delete the QString has these rules, which seem a bit 
arbitrary:

fromVALUE (ie Ruby to C++):
		if(s && m->type().isConst() && m->cleanup())
		delete s;

ToVALUE (ie C++ to Ruby):
	     	if(m->cleanup() || m->type().isStack())
	     	delete s;

So I assume in you example 'slt(QString &)' is a C++ slot, and you are 
emitting the signal in Ruby? Then the code in fromVALUE would be wrong and 
shouldn't have the 'isConst()' test.

-- Richard
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