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

11 lines
276 B
Rust

// Make sure that we cannot pass by argument a `&` that got already invalidated.
fn foo(_: &i32) {}
fn main() {
let x = &mut 42;
let xraw = x as *mut _;
let xref = unsafe { &*xraw };
unsafe { *xraw = 42 }; // unfreeze
foo(xref); //~ ERROR is not frozen
}