Recent changes to 204: Segfault when using callbackshttps://sourceforge.net/p/raspberry-gpio-python/tickets/204/2022-04-18T18:05:03.020000ZRecent changes to 204: Segfault when using callbacksSegfault when using callbacks2022-04-18T18:05:03.020000Z2022-04-18T18:05:03.020000ZBarney Stratfordhttps://sourceforge.net/u/bjs31/https://sourceforge.net9e76f9d8c837a3a75e479c543c5ff25a0eb029a0<div class="markdown_content"><p>The following causes a use-after-free bug:<br/> RPi.GPIO.add_event_detect (channel, edge, callback = RPi.GPIO.remove_event_detect)</p> <p>Look at the function run_py_callbacks starting at line 586 of source/py_gpio.c In the example given above, calling the callback in line 597 causes the memory pointed to by cb to be freed. If it is overwritten before line 605 (cb = cb-&gt;next), then cb goes into hyperspace and a segfault follows.</p></div>