Clarify that ordering is unspecified

rust-lang · Jan 5, 2022 · 06b17a2 · 06b17a2
1 parent b9f008b
commit 06b17a2
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/library/alloc/src/slice.rs b/library/alloc/src/slice.rs
@@ -373,6 +373,8 @@ impl<T> [T] {
     ///
     /// During sorting, the key function is called at most once per element, by using
     /// temporary storage to remember the results of key evaluation.
+    /// The order of calls to the key function is unspecified and may change in future versions
+    /// of the standard library.
     ///
     /// This sort is stable (i.e., does not reorder equal elements) and *O*(*m* \* *n* + *n* \* log(*n*))
     /// worst-case, where the key function is *O*(*m*).