If you're memory constrained, why would you use a GC? Just use manual memory arenas. They're trivially simple once you've seen how to use them. Unfortunately,

If you're memory constrained, why would you use a GC? Just use manual memory arenas. They're trivially simple once you've seen how to use them. Unfortunately, Rust currently requires breaking some conventions and using unsafe quite a bit to do this without overflowing the stack, but it's just an extra keyword or two compared to C, and the safety guarantees outside of the unsafe code make up for it.