URLO と IRLO どっちかね
標準の仕様だし internal かな
Any guarantee for validity of multiple `Rc::from_raw()` calls for single `Rc::into_raw()`? - libs - Rust Internals
https://internals.rust-lang.org/t/any-guarantee-for-validity-of-multiple-rc-from-raw-calls-for-single-rc-into-raw/18970
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Rust Internals · Any guarantee for validity of multiple `Rc::from_raw()` calls for single `Rc::into_raw()`?I'd like to clone Rc<T> from *const T created by Rc::into_raw(), without touching ownership of the original Rc behind the raw pointer. I.e. what I wanted is: fn clone_raw1(raw: *const T) -> Rc<T> { // Restore `Rc` temporarily to clone. let original = unsafe { Rc::from_raw(raw) }; // Clone `Rc`. let cloned = Rc::clone(original); // Make it pointer again so that the caller can continue using `raw`. let raw2 = Rc::from_raw(original); // I wish they were always identica...