Clippy · Correctness

Operation that always yields zero

clippy::erasing_op

Remove the operation or fix the operand: multiplying by zero or masking with zero always yields zero.

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

Not a defect when

The zero operand is a named constant that is zero only in this configuration, and the expression is kept so the formula stays correct when the constant changes.

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

Set it once in rust-doctor.toml

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