src/test/ui/issues/issue-69683.rs

   1 pub trait Element<S> {
   2     type Array;
   3 }
   4
   5 impl<T> Element<()> for T {
   6     type Array = T;
   7 }
   8
   9 impl<T: Element<S>, S> Element<[S; 3]> for T {
  10     type Array = [T::Array; 3];
  11 }
  12
  13 trait Foo<I>
  14 where
  15     u8: Element<I>,
  16 {
  17     fn foo(self, x: <u8 as Element<I>>::Array);
  18 }
  19
  20 impl<I> Foo<I> for u16
  21 where
  22     u8: Element<I>,
  23 {
  24     fn foo(self, _: <u8 as Element<I>>::Array) {}
  25 }
  26
  27 fn main() {
  28     let b: [u8; 3] = [0u8; 3];
  29
  30     0u16.foo(b); //~ ERROR type annotations needed
  31     //<u16 as Foo<[(); 3]>>::foo(0u16, b);
  32 }