E0211 can be triggered for different reasons

[Manishearth]

Both

#![feature(intrinsics)]

extern "rust-intrinsic" {
    fn size_of<T>(); // error: intrinsic has wrong type
}

and

use std::rc::Rc;
struct Foo;

impl Foo {
    fn x(self: Rc<Foo>) {} // (Only Box<Self>, &Self, Self, or &mut Self work as explicit self params)
}

trigger E0211. The error index only handles the first (https://doc.rust-lang.org/error-index.html#E0211)

We should expand the help text to mention all cases that can trigger this error.

cc @GuillaumeGomez @AlisdairO

[Manishearth]

The cases are:

• When a range has mismatched types (e.g. 1u8...1i8)
• When a start or main function has the wrong signature
• When an intrinsic has the wrong type
• When the self type is not amongst Box<Self>, &Self, Self, &mut Self

[GuillaumeGomez]

Thanks for reporting it! I'll try fixing it by the end of the week-end.

[steveklabnik]

Did the PR fix this?

[GuillaumeGomez]

Yup !

[Manishearth]

#29260