AtomicU128/AtomicI128 not shown in std docs on rust-lang.org

[programmerjake]

Location

https://doc.rust-lang.org/nightly/std/?search=AtomicU128

Summary

AtomicU128/AtomicI128 are hidden when the docs for std are built for the rust-lang website, I'm guessing this is likely because the website's docs are for x86_64-unknown-linux-gnu, which doesn't have 128-bit atomics due to not having the cmpxchg16b target feature enabled by default.

see also #99069

[wwenrr]

@rustbot claim

Hi, I’d like to work on this issue. I’ll investigate why AtomicU128/AtomicI128 are hidden in the rust-lang std docs build and propose a small fix or documentation adjustment.

[wwenrr]

Opened a fix PR:

• core: include i128/u128 atomics in docs on targets without 128-bit atomics #154689

Summary:

• Include AtomicI128/AtomicU128 in rustdoc via cfg(any(doc, target_has_atomic_load_store = "128")).
• This keeps runtime/target availability behavior unchanged, but makes the types visible in docs on rust-lang.org builds.

[pluiee]

@rustbot claim