rust/tests/compile-fail/stacked_borrows/illegal_read8.rs

14 lines
396 B
Rust

// Make sure that creating a raw ptr next to a shared ref works
// but the shared ref still gets invalidated when the raw ptr is used for writing.
fn main() { unsafe {
use std::mem;
let x = &mut 0;
let y1: &i32 = mem::transmute(&*x); // launder lifetimes
let y2 = x as *mut _;
let _val = *y2;
let _val = *y1;
*y2 += 1;
let _fail = *y1; //~ ERROR borrow stack
} }