src/test/ui/regions/regions-close-object-into-object-4.rs

   1 trait A<T> { }
   2
   3 struct B<'a, T:'a>(&'a (dyn A<T> + 'a));
   4
   5 trait X { }
   6 impl<'a, T> X for B<'a, T> {}
   7
   8 fn i<'a, T, U>(v: Box<dyn A<U>+'a>) -> Box<dyn X + 'static> {
   9     Box::new(B(&*v)) as Box<dyn X>
  10     //~^ ERROR the parameter type `U` may not live long enough [E0310]
  11     //~| ERROR the parameter type `U` may not live long enough [E0310]
  12     //~| ERROR the parameter type `U` may not live long enough [E0310]
  13     //~| ERROR lifetime may not live long enough
  14     //~| ERROR cannot return value referencing local data `*v` [E0515]
  15     //~| ERROR the parameter type `U` may not live long enough [E0310]
  16
  17 }
  18
  19 fn main() {}