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

11 lines
317 B
Rust

// Make sure that we cannot pass by argument a `&mut` that got already invalidated.
fn foo(_: &mut i32) {}
fn main() {
let x = &mut 42;
let xraw = x as *mut _;
let xref = unsafe { &mut *xraw };
let _val = *x; // invalidate xraw
foo(xref); //~ ERROR mutable reference with non-reactivatable tag
}