[Qt-interest] Memory leak converting QScriptValue to QVariant

[Thiago Macieira]

Em Quarta-feira 19 Agosto 2009, às 11:34:23, Alberto Scarpa escreveu:
> The leak rises converting the QScriptValue to QVariant inseide the variantF
> romValue function.
>  A QVariant with type -1 is created and in its destructor hadle->clear(&d);
>  is not called (see the following backtrace).
> 
> You have the leak with this simple program too:
> 
> #include <QVariant>
> int main(int argc, char *argv[])
> {
>     while(1)
>         QVariant v1( -1, (void*)0 );
> }
> 

A meta type ID of -1 should never be used. That's undefined behaviour, so a 
leak can be expected.

The bug is actually in the code that is getting the metatype ID and not 
checking for -1.

-- 
Thiago Macieira - thiago.macieira (AT) nokia.com
  Senior Product Manager - Nokia, Qt Development Frameworks
     Sandakerveien 116, NO-0402 Oslo, Norway

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