Pattern in closure argument sometimes generate incorrect coma code

[arnaudgolfouse]

The following code generate incorrect coma:

pub fn f() {
    let _ = |&x: &i32| x;
}

Indeed the line use M_result_in_spec__f__blabla_Type as Closure'0 is present inside module M_result_in_spec__f__blabla_Type.

A bit weird: giving the closure to a function directly does not triggers the error:

fn takes_closure<F: Fn(&i32) -> i32>(f: F) {}

pub fn f() {
    takes_closure(|&x: &i32| x);
}

[arnaudgolfouse]

Ah, this is not only for patterns, it also happens here:

pub fn f() {
    let clos = #[ensures(result == x.1)]
    |x: &(i32, i32)| x.1;
}