[Interest] QQuickPaintedItem - Memory leak on iOS - QTBUG-81731

Nuno Santos nunosantos at imaginando.pt
Thu Feb 20 17:46:04 CET 2020


I’ve recently found a very serious problem since it causes a huge memory leak when you have several QQuickPaintedItem items being constantly updated, like I have in my application. This seems to happen only on iOS. 

I’ve been able to replicate this bug using Qt stuff only, as required by Qt R&D to replicate, investigate and solve the problem. The test project is attached to the bug report. 

I’m trying to find out if anyone else is potentially suffering from the same issue.

https://bugreports.qt.io/browse/QTBUG-81731 <https://bugreports.qt.io/browse/QTBUG-81731>

In order to test this, you should run Qt iOS qmake to the project and use Xcode. Then run the project and inspect the memory usage. It should grow very significantly in just one minute

Best regards,

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