rust/tests/ui/borrowck/borrowck-move-mut-base-ptr.rs
2023-01-11 09:32:08 +00:00

20 lines
417 B
Rust

// Test that attempt to move `&mut` pointer while pointee is borrowed
// yields an error.
//
// Example from compiler/rustc_borrowck/borrowck/README.md
fn foo(t0: &mut isize) {
let p: &isize = &*t0; // Freezes `*t0`
let t1 = t0; //~ ERROR cannot move out of `t0`
*t1 = 22;
p.use_ref();
}
fn main() {
}
trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { } }
impl<T> Fake for T { }