tests/ui/lint/lint-ctypes-73249-2.rs

   1 #![feature(type_alias_impl_trait)]
   2 #![deny(improper_ctypes)]
   3
   4 pub trait Baz {}
   5
   6 impl Baz for () {}
   7
   8 type Qux = impl Baz;
   9
  10 fn assign() -> Qux {}
  11
  12 pub trait Foo {
  13     type Assoc: 'static;
  14 }
  15
  16 impl Foo for () {
  17     type Assoc = Qux;
  18 }
  19
  20 #[repr(transparent)]
  21 pub struct A<T: Foo> {
  22     x: &'static <T as Foo>::Assoc,
  23 }
  24
  25 extern "C" {
  26     pub fn lint_me() -> A<()>; //~ ERROR: uses type `Qux`
  27 }
  28
  29 fn main() {}