Use (or write) a garbage collector

[dplassgit]

At least some kind of rudimentary one

[dplassgit]

https://github.com/ivmai/bdwgc (maintained)

https://github.com/orangeduck/tgc (last updated 2023)

https://github.com/unveres/ezgc (last updated 6 years ago)