Segmentation fault when assigning a Lua callback to a C struct about cffi-lua

[q66]

okay, that's fixed now, but generally don't do this; you have no way to :free() the callback afterwards, so you leak resources, and with luajit it's especially bad considering the callback limits

you should always cast the lua function first, then save the result, pass it where you want it, and explicitly :free() the callback once you're done with it

[niess]

Thanks!

I missed this point indeed. Usually my application uses only a few callbacks. Yet it could be problematic indeed. I will change this and make sure to :free().