src/test/ui/nll/user-annotations/wf-self-type.rs

   1 struct Foo<'a, 'b: 'a>(&'a &'b ());
   2
   3 impl<'a, 'b> Foo<'a, 'b> {
   4     fn xmute(a: &'b ()) -> &'a () {
   5         unreachable!()
   6     }
   7 }
   8
   9 pub fn foo<'a, 'b>(u: &'b ()) -> &'a () {
  10     Foo::xmute(u) //~ ERROR lifetime may not live long enough
  11 }
  12
  13 fn main() {}