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Clarify docs for RESULT_LARGE_ERR

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Lukas Lueg 2023-04-29 14:18:31 +02:00
parent 3594d55439
commit 2ed254e29f
1 changed files with 5 additions and 0 deletions
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clippy_lints/src/functions/mod.rs
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@ -252,6 +252,11 @@ declare_clippy_lint! {
/// A `Result` is at least as large as the `Err`-variant. While we /// A `Result` is at least as large as the `Err`-variant. While we
/// expect that variant to be seldomly used, the compiler needs to reserve /// expect that variant to be seldomly used, the compiler needs to reserve
/// and move that much memory every single time. /// and move that much memory every single time.
/// Furthermore, errors are often simply passed up the call-stack, making
/// use of the `?`-operator and its type-conversion mechanics. If the
/// `Err`-variant further up the call-stack stores the `Err`-variant in
/// question (as library code often does), it itself needs to be at least
/// as large, propagating the problem.
/// ///
/// ### Known problems /// ### Known problems
/// The size determined by Clippy is platform-dependent. /// The size determined by Clippy is platform-dependent.