Amusing and wrong error message

[bjorn3]

fn main() {
    let a = (1.0).pow(1.0);
}

error[E0689]: can't call method `pow` on ambiguous numeric type `{float}`
 --> src/main.rs:2:19
  |
2 |     let a = (1.0).pow(1.0);
  |                   ^^^
help: you must specify a concrete type for this numeric value, like `f32`
  |
2 |     let a = (1.0)_f32.pow(1.0);
  |             ^^^^^^^^^

Please note the (1.0)_f32

[estebank]

The literal's span should point inside the parenthesis. Probably needs a change to parse_lit_token in libsyntax/parser/parse.rs.

[euclio]

I'm interested in working on this.

[estebank]

@euclio feel free to reach out for any help you might need!

I believe that you should verify if changing the span being used in the AST for literals changes the suggestion output. If it doesn't, it means that the problem is not at the parser level, but when lowering to HIR. If that is the case, we need to dig deeper, but I'll be here to help you with that.

https://forge.rust-lang.org/x-py.html