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Clippy · Correctness

C-like enum discriminant overflowing 32-bit targets

clippy::enum_clike_unportable_variant

Give the enum a fixed-width repr such as u64, or keep every discriminant within 32 bits.

Category
Correctness
Default level
warn
Tier
P1
Producer
Clippy
Diff scope
line

Not a defect when

The crate refuses to build on 32-bit targets (a compile_error! or cfg on target_pointer_width), so the discriminant always fits isize or usize.

What it reads

Clippy, with the compiler behind it. The only pass that compiles.

Tier

Serious: worth interrupting other work for.

The tier bounds how severe a rule may be; its category bounds the tier.

Diff scope

The changed line itself.

What --scope contextual looks at to decide whether a change caused the finding.

Change it

Turn it off, or make it blocking, without touching the code it flags:

rust-doctor --rule clippy::enum_clike_unportable_variant=off .
rust-doctor --rule clippy::enum_clike_unportable_variant=error .

Set it once in rust-doctor.toml

Upstream

Clippy's own documentation for this lint

Other Correctness rules