src/test/ui/issues/issue-61623.rs

   1 fn f1<'a>(_: &'a mut ()) {}
   2
   3 fn f2<P>(_: P, _: ()) {}
   4
   5 fn f3<'a>(x: &'a ((), &'a mut ())) {
   6     f2(|| x.0, f1(x.1))
   7 //~^ ERROR cannot borrow `*x.1` as mutable, as it is behind a `&` reference
   8 }
   9
  10 fn main() {}