| // https://discord.com/channels/273534239310479360/512792629516173323/870075511009857617 |
| |
| #![allow(hidden_glob_reexports)] |
| |
| extern crate pin_project as pin_project_orig; |
| extern crate self as pin_project; |
| |
| pub use ::pin_project_orig::*; |
| mod __private { |
| pub use ::pin_project_orig::__private::*; |
| pub trait Drop {} |
| } |
| |
| use std::{marker::PhantomPinned, mem}; |
| |
| #[pin_project] //~ ERROR conflicting implementations of trait `_::FooMustNotImplDrop` |
| struct S { |
| #[pin] |
| f: (u8, PhantomPinned), |
| } |
| |
| impl Drop for S { |
| fn drop(&mut self) { |
| let prev = &self.f.0 as *const _ as usize; |
| let moved = mem::take(&mut self.f); // move pinned field |
| let moved = &moved.0 as *const _ as usize; |
| assert_eq!(prev, moved); // panic |
| } |
| } |
| |
| fn main() { |
| let mut x = Box::pin(S { f: (1, PhantomPinned) }); |
| let _f = x.as_mut().project().f; // first mutable access |
| } |
