ambiguous-precedence

Require grouping where operator precedence is easy to misread

Mixed arithmetic, shift, bitwise, comparison, and logical operators can make evaluation order difficult to see.
Instead, you SHOULD parenthesize each nested operation whose precedence is not conventional arithmetic.

- Category: suspicious
- Level: warning
- Fix: automatic
- Scope: module

Reported

function mask(offset: int64, width: int64): int64 {
    return 1 << offset + width;
}
Accepted

function mask(offset: int64, width: int64): int64 {
    return 1 << (offset + width);
}
Prior art

- Clippy · precedence

language/linter/src/rules/suspicious/ambiguousprecedence.rs:12