// See #130494

#![feature(pin_ergonomics)]
#![allow(incomplete_features)]

fn f(x: &pin const i32) {}
fn g<'a>(x: &'a pin const i32) {}
fn h<'a>(x: &'a pin mut i32) {}
fn i(x: &pin mut i32) {}

struct Foo;

impl Foo {
    fn f(&pin const self) {}
    fn g<'a>(&'a pin const self) {}
    fn h<'a>(&'a pin mut self) {}
    fn i(&pin mut self) {}
}

fn borrows() {
    let mut foo = 0_i32;
    let x: Pin<&mut _> = &pin mut foo;

    let x: Pin<&_> = &pin const foo;
}