The warning diagnostics of the usage of `std::intrinsics::copy_nonoverlapping` is misleading

[OscarTHZhang]

Code

fn main() {
    let a = 10;
    let mut b;
    unsafe {
        std::ptr::copy_nonoverlapping(a.as_ptr(), b.as_mut_ptr(), std::mem::sizeof::<i32>());
    }
}

Current output

use of deprecated module `std::intrinsics`: import this function via `std::mem` instead

Desired output

Either

use of deprecated module `std::intrinsics`: import this function via `std::ptr` instead

or
this function should be added into std::mem module.

Rationale and extra context

No response

Other cases

Rust Version

rustc 1.86.0 (872aa6e349 2025-04-01)
binary: rustc
commit-hash: 872aa6e34902620b5f406a0cbef652085a3c54b1
commit-date: 2025-04-01
host: x86_64-unknown-linux-gnu
release: 1.86.0
LLVM version: 19.1.7

Anything else?

No response

[smanilov]

Looks like an easy fix, taking this on as a first issue.

[RalfJung]

@OscarTHZhang your code example does not compile. And it uses std::ptr so even if it compiled it would not show a deprecation warning. Could you fix the issue description? :)