I somehow hadn't come across this library, but have a whole blog post on the various ways people store data in pointers (and when+why it's safe) https://muxup.c

I somehow hadn't come across this library, but have a whole blog post on the various ways people store data in pointers (and when+why it's safe) https://muxup.com/2023q4/storing-data-in-pointers https://muxup.com/2023q4/storing-data-in-pointers