Clippy · Correctness

Transmute between incompatible collection layouts

clippy::unsound_collection_transmute

Convert the elements with into_iter().map(...).collect() instead of transmuting the collection.

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

Not a defect when

There is no such case: transmuting a collection between element types of different layout is undefined behavior regardless of intent, so the conversion always needs rewriting.

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

Set it once in rust-doctor.toml

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