Crash when copying QOpenGLFunctions Core objects

[Niels Dekker]

A colleague of mine here at LKEB (LUMC) encountered an access violation when destructing objects of a class, derived from an QOpenGLFunctions Core class, in Qt 5.5.1. Now it appears that even the following simple code crashes, as I tested in Qt 5.11.1:

#include <QOpenGLFunctions_4_5_Core>

void CopyCoreObjects()
{
	{
		QOpenGLFunctions_4_5_Core coreObject1;
		{
			QOpenGLFunctions_4_5_Core coreObject2 = coreObject1;

		}  // OK, calls ~QOpenGLFunctions_4_5_Core().

	} // Crash!
}

Is this a known issue? We would suggest preventing accidental copying QOpenGLFunctions Core objects by marking the copy-constructor and the assignment-operator with C++11 "= delete".

[Christian Ehrlicher]

I would say you're right. Please create a bug report so it can be fixed.

[Niels Dekker]

@Christian-Ehrlicher said in Crash when copying QOpenGLFunctions Core objects:

I would say you're right. Please create a bug report so it can be fixed.

Thanks Christian! I just submitted the bug report: https://bugreports.qt.io/browse/QTBUG-71422