Rust DoctorClippy · Correctness
Guarded subtraction with operands in wrong order
clippy::inverted_saturating_sub
Swap the operands: the guard proves the subtraction as written underflows.
- Category
- Correctness
- Default level
- warn
- Tier
- P1
- Producer
- Clippy
- Diff scope
- line
Not a defect when
The guarded branch is meant to produce zero and the saturating_sub is written that way for symmetry with a sibling branch, though returning 0 states it directly.
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::inverted_saturating_sub=off .
rust-doctor --rule clippy::inverted_saturating_sub=error .