rust/tests/ui/borrowck/issue-109271-pass-self-into...

40 lines
977 B
Rust

//@ run-rustfix
#![allow(unused)]
struct S;
impl S {
fn call(&mut self, f: impl FnOnce((), &mut Self)) {
// change state or something ...
f((), self);
// change state or something ...
}
fn get(&self) {}
fn set(&mut self) {}
}
fn main() {
let mut v = S;
v.call(|(), this: &mut S| this.get());
//~^ error: cannot borrow `v` as mutable because it is also borrowed as immutable
v.call(|(), this: &mut S| this.set());
//~^ error: cannot borrow `v` as mutable more than once at a time
//~| error: cannot borrow `v` as mutable more than once at a time
v.call(|(), this: &mut S| {
//~^ error: cannot borrow `v` as mutable more than once at a time
//~| error: cannot borrow `v` as mutable more than once at a time
_ = this;
this.set();
this.get();
S::get(&this);
use std::ops::Add;
let v = 0u32;
_ = v + v;
_ = v.add(3);
});
}