rust/tests/fail/stacked_borrows/pass_invalid_mut.rs
2022-07-13 18:59:33 -04:00

11 lines
340 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 = unsafe { *xraw }; // invalidate xref
foo(xref); //~ ERROR: /reborrow .* tag does not exist in the borrow stack/
}