Rollup merge of #111127 - xfix:const-slice-flatten, r=scottmcm

Constify slice flatten method ACP: rust-lang/libs-team#218
tcdi · May 3, 2023 · 91dfba3 · 91dfba3
2 parents 9c502da + 62e0c72
commit 91dfba3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/core/src/slice/mod.rs b/core/src/slice/mod.rs
@@ -4257,7 +4257,7 @@ impl<T, const N: usize> [[T; N]] {
     /// assert!(empty_slice_of_arrays.flatten().is_empty());
     /// ```
     #[unstable(feature = "slice_flatten", issue = "95629")]
-    pub fn flatten(&self) -> &[T] {
+    pub const fn flatten(&self) -> &[T] {
         let len = if T::IS_ZST {
             self.len().checked_mul(N).expect("slice len overflow")
         } else {