From: Ralf Jung Date: Sun, 10 Mar 2019 19:29:45 +0000 (+0100) Subject: read_ref doe not need to mutate X-Git-Url: https://git.ralfj.de/web.git/commitdiff_plain/e652538d15d48f5c051f1637d63d6956acc66834?ds=inline read_ref doe not need to mutate thanks to @amosonn! --- diff --git a/ralf/_posts/2018-04-05-a-formal-look-at-pinning.md b/ralf/_posts/2018-04-05-a-formal-look-at-pinning.md index 72dccc1..5e51e7c 100644 --- a/ralf/_posts/2018-04-05-a-formal-look-at-pinning.md +++ b/ralf/_posts/2018-04-05-a-formal-look-at-pinning.md @@ -68,11 +68,11 @@ impl SelfReferential { fn init(mut self: Pin) { let this : &mut SelfReferential = unsafe { Pin::get_mut(&mut self) }; // Set up self_ref to point to this.data. - this.self_ref = &mut this.data as *const i32; + this.self_ref = &this.data as *const i32; } - fn read_ref(mut self: Pin) -> Option { - let this : &mut SelfReferential = unsafe { Pin::get_mut(&mut self) }; + fn read_ref(self: Pin) -> Option { + let this : &SelfReferential = &*self; // Dereference self_ref if it is non-NULL. if this.self_ref == ptr::null() { None