diff options
| -rw-r--r-- | clippy_lints/src/functions/mod.rs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/clippy_lints/src/functions/mod.rs b/clippy_lints/src/functions/mod.rs index 1528a7be09c..ee10334c67f 100644 --- a/clippy_lints/src/functions/mod.rs +++ b/clippy_lints/src/functions/mod.rs @@ -252,6 +252,11 @@ declare_clippy_lint! { /// 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 /// 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 /// The size determined by Clippy is platform-dependent. |