src/test/ui/coercion/issue-36007.rs

   1 // check-pass
   2 #![feature(coerce_unsized, unsize)]
   3
   4 use std::marker::Unsize;
   5 use std::ops::CoerceUnsized;
   6
   7 struct Foo<T: ?Sized>(Box<T>);
   8
   9 impl<T> CoerceUnsized<Foo<dyn Baz>> for Foo<T> where T: Unsize<dyn Baz> {}
  10
  11 struct Bar;
  12
  13 trait Baz {}
  14
  15 impl Baz for Bar {}
  16
  17 fn main() {
  18     let foo = Foo(Box::new(Bar));
  19     let foobar: Foo<Bar> = foo;
  20 }