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Thanks. So you basically make pointers manually with your own separated stack. Wouldn't make sense to have the ability to just allocate anew stact you dedicate to a graph and let the ownership system deals with it for you? Seems like a missing abstraction.

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I recently saw a submission here that does that, by essentially implementing GC in Rust. It is not beginner material though. https://kyju.org/blog/tokioconf-2026/

Edit: also the simplest way how to do cyclic structures is to heap-allocate via Box and leak memory. Box::leak This is also mentioned in the linked article.

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