GLVolumeItem.setData memory leak?

[ray chen]

Hello, I'm using the latest develop branch of pyqtgraph with PyQt5. It seem GLVolumeItem.setData function leaks memory.

the simplest code is add a QTimer to examples/GLVolumeItem.py:

....

v = gl.GLVolumeItem(d2)

v.translate(-50, -50, -100)

w.addItem(v)

ax = gl.GLAxisItem()

w.addItem(ax)

from pyqtgraph.Qt import QtCore, QtGui

timer = QtCore.QTimer()

def update():

    v.setData(d2)

timer.timeout.connect(update)

timer.start(30)

Am I using it wrong? please help, thanks!