src/test/ui/issues/issue-69455.rs

   1 // Regression test for #69455: projection predicate was not satisfied.
   2 // Compiler should indicate the correct location of the
   3 // unsatisfied projection predicate
   4
   5 pub trait Test<Rhs = Self> {
   6     type Output;
   7
   8     fn test(self, rhs: Rhs) -> Self::Output;
   9 }
  10
  11 impl Test<u32> for u64 {
  12     type Output = u64;
  13
  14     fn test(self, other: u32) -> u64 {
  15         self + (other as u64)
  16     }
  17 }
  18
  19 impl Test<u64> for u64 {
  20     type Output = u64;
  21
  22     fn test(self, other: u64) -> u64 {
  23         (self + other) as u64
  24     }
  25 }
  26
  27 fn main() {
  28     let xs: Vec<u64> = vec![1, 2, 3];
  29     println!("{}", 23u64.test(xs.iter().sum())); //~ ERROR: type annotations needed
  30 }