Short description

Take a Vector, map it with a transform, put it in a threading Thread, iterate, and BOOM.

Code to reproduce

import pyqtgraph as pg
import threading


def do_it():
    xform = pg.SRTTransform3D()
    v = xform.map(pg.Vector((0, 0, 0)))
    tuple(v)


pg.mkQApp()
threading.Thread(target=do_it).start()

Expected behavior

Real behavior

SIGSEGV

Tested environment(s)

• PyQtGraph version: 0.13.8dev0
• Qt Python binding: PyQt5 5.15.10 Qt 5.15.2
• Python version: 3.11
• NumPy version: 1.26.3
• Operating system: linux
• Installation method: git

Additional context

Workaround: use a QThread, and this isn't an issue.