rust/tests/fail/stacked_borrows/aliasing_mut3.rs
2022-06-01 10:53:38 -04:00

16 lines
430 B
Rust

use std::mem;
pub fn safe(_x: &mut i32, _y: &i32) {} //~ ERROR borrow stack
fn main() {
let mut x = 0;
let xref = &mut x;
let xraw: *mut i32 = unsafe { mem::transmute_copy(&xref) };
let xshr = &*xref;
// transmute fn ptr around so that we can avoid retagging
let safe_raw: fn(x: *mut i32, y: *const i32) = unsafe {
mem::transmute::<fn(&mut i32, &i32), _>(safe)
};
safe_raw(xraw, xshr);
}