src/test/ui/issues/issue-29147.rs

   1 #![recursion_limit="1024"]
   2
   3 pub struct S0<T>(T,T);
   4 pub struct S1<T>(Option<Box<S0<S0<T>>>>,Option<Box<S0<S0<T>>>>);
   5 pub struct S2<T>(Option<Box<S1<S1<T>>>>,Option<Box<S1<S1<T>>>>);
   6 pub struct S3<T>(Option<Box<S2<S2<T>>>>,Option<Box<S2<S2<T>>>>);
   7 pub struct S4<T>(Option<Box<S3<S3<T>>>>,Option<Box<S3<S3<T>>>>);
   8 pub struct S5<T>(Option<Box<S4<S4<T>>>>,Option<Box<S4<S4<T>>>>,Option<T>);
   9
  10 trait Foo { fn xxx(&self); }
  11 trait Bar {} // anything local or #[fundamental]
  12
  13 impl<T> Foo for T where T: Bar, T: Sync {
  14     fn xxx(&self) {}
  15 }
  16
  17 impl Foo for S5<u32> { fn xxx(&self) {} }
  18 impl Foo for S5<u64> { fn xxx(&self) {} }
  19
  20 fn main() {
  21     let _ = <S5<_>>::xxx; //~ ERROR type annotations needed
  22 }