Auto merge of #4265 - vks:patch-1, r=flip1995

bors · bors · commit f0d217026ab5 · 2019-07-09T13:15:29.000Z
cast_ptr_alignment: Mention legal use under known problems Refs #2881. changelog: Mention know problems for cast_ptr_alignment
diff --git a/clippy_lints/src/types.rs b/clippy_lints/src/types.rs
@@ -789,7 +789,8 @@ declare_clippy_lint! {
     /// **Why is this bad?** Dereferencing the resulting pointer may be undefined
     /// behavior.
     ///
-    /// **Known problems:** None.
+    /// **Known problems:** Using `std::ptr::read_unaligned` and `std::ptr::write_unaligned` or similar
+    /// on the resulting pointer is fine.
     ///
     /// **Example:**
     /// ```rust
