arithmetic_side_effects: false positive with inline const blocks

Summary

arithmetic_side_effects lint is able to check some syntactic structures for division by a constant integer and avoid linting when this integer is known to not be zero. However, this seems to fail for inline const {} blocks which contain expressions equivalent to those used to compute a proper constant...

Lint Name

arithmetic_side_effects

Reproducer

I tried this code:

#![deny(clippy::arithmetic_side_effects)]

pub fn correct1(f: u64) -> u64 {
    const SZ: u64 = std::mem::size_of::<u64>() as u64; 
    f.saturating_div(SZ)
}

pub fn correct2(f: u64) -> u64 {
    const SZ: u64 = 0;
    f.saturating_div(SZ)
}

pub fn correct3(f: u64) -> u64 {
    const SZ: u64 = std::mem::size_of::<u64>() as u64; 
    f.saturating_div(const { SZ })
}

pub fn false_positive(f: u64) -> u64 {
    f.saturating_div(const { std::mem::size_of::<u64>() as u64 })
}

I saw this happen:

error: arithmetic operation that can potentially result in unexpected side-effects
  --> src/lib.rs:10:22
   |
10 |     f.saturating_div(SZ)
   |                      ^^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#arithmetic_side_effects
note: the lint level is defined here
  --> src/lib.rs:1:9
   |
 1 | #![deny(clippy::arithmetic_side_effects)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: arithmetic operation that can potentially result in unexpected side-effects
  --> src/lib.rs:19:22
   |
19 |     f.saturating_div(const { std::mem::size_of::<u64>() as u64 })
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#arithmetic_side_effects

I expected to see this happen:

The const { ... } variant should not trigger the lint.

Version

1.98.0-nightly (2026-06-17 c1b22f44c3f30e186b82)

Additional Labels

No response