File: issue-22645.rs

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rustc 1.87.0%2Bdfsg1-1
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use std::ops::Add;

trait Scalar {}
impl Scalar for f64 {}

struct Bob;

impl<RHS: Scalar> Add <RHS> for Bob {
  type Output = Bob;
  fn add(self, rhs : RHS) -> Bob { Bob }
}

fn main() {
  let b = Bob + 3.5;
  b + 3 //~ ERROR E0277
  //~^ ERROR: mismatched types
}