`unnecessary_mut_passed` (probably) shouldn't lint in macro expansions

[y21]

Summary

Reproducer should make it clear what the problem is

Lint Name

unnecessary_mut_passed

Reproducer

I tried this code:

macro_rules! x {
    ($f:ident) => {
        $f(&mut 1);
    }
}

fn f(x: &i32) {}
fn f2(x: &mut i32) {
    *x += 1;
}

fn main() {
    x!(f); // no `&mut` needed in expansion
    x!(f2); // but in this expansion it is needed
}

I saw this happen:

warning: the function `f` doesn't need a mutable reference
  --> src/main.rs:3:12
   |
3  |         $f(&mut 1);
   |            ^^^^^^
...
13 |     x!(f);
   |     ----- in this macro invocation

If we remove the mutable reference and instead pass &1, it won't compile because that fails in the second invocation x!(f2), which does require a mutable reference

I expected to see this happen: no warning.

Version

rustc 1.73.0-nightly (500647fd8 2023-07-27)
binary: rustc
commit-hash: 500647fd8138cc09e87edb08d62f81654fbf6ef8
commit-date: 2023-07-27
host: x86_64-unknown-linux-gnu
release: 1.73.0-nightly
LLVM version: 16.0.5

Additional Labels

No response