autotest failure between Qt 4.6.3 and Qt 4.7.2 in QLinearGradient::setStops method on Symbian^3 platform

tests/auto/qbrush(tst_qbrush) is failed on Symbian^3 device in following test case

void tst_QBrush::gradientStops()
{
    // A hack in parseStopNode() in qsvghandler.cpp depends on inserting stops at NaN.
    gradient.setStops(QGradientStops() << QGradientStop(qQNaN(), QColor()));
    QCOMPARE(gradient.stops().size(), 1);
}

gradient.stops().size() method still returns 2. According documentation it seems correct behavior.
But it is passed on Qt 4.6.3 and also on Windows platform and emulator for 4.7.2.
Failing is only Symbian device. Perhaps it is not BC issue but should be fixed somehow.