rust/tests/compile-fail/stacked_borrows/invalidate_against_barrier2.rs

14 lines
404 B
Rust

fn inner(x: *mut i32, _y: &i32) {
// If `x` and `y` alias, retagging is fine with this... but we really
// shouldn't be allowed to write to `x` at all because `y` was assumed to be
// immutable for the duration of this call.
unsafe { *x = 0 }; //~ ERROR protect
}
fn main() {
let mut x = 0;
let xraw = &mut x as *mut _;
let xref = unsafe { &*xraw };
inner(xraw, xref);
}