#![allow(unused_variables)] // For some reason, the error location is different when using fullmir // error-pattern: in conflict with lock WriteLock mod safe { use std::slice::from_raw_parts_mut; pub fn as_mut_slice(self_: &Vec) -> &mut [T] { unsafe { from_raw_parts_mut(self_.as_ptr() as *mut T, self_.len()) } } } fn main() { let v = vec![0,1,2]; let v1_ = safe::as_mut_slice(&v); let v2_ = safe::as_mut_slice(&v); }