2 files changed, 3 insertions, 1 deletions
diff --git a/library/alloc/src/string.rs b/library/alloc/src/string.rs
index 9a161d057db..cd9e04a915a 100644
--- a/library/alloc/src/string.rs
+++ b/library/alloc/src/string.rs
@@ -1832,6 +1832,7 @@ impl String {
     #[stable(feature = "rust1", since = "1.0.0")]
     #[rustc_const_stable(feature = "const_vec_string_slice", since = "1.87.0")]
     #[rustc_confusables("length", "size")]
+    #[cfg_attr(not(bootstrap), rustc_no_implicit_autorefs)]
     pub const fn len(&self) -> usize {
         self.vec.len()
     }
@@ -1851,6 +1852,7 @@ impl String {
     #[must_use]
     #[stable(feature = "rust1", since = "1.0.0")]
     #[rustc_const_stable(feature = "const_vec_string_slice", since = "1.87.0")]
+    #[cfg_attr(not(bootstrap), rustc_no_implicit_autorefs)]
     pub const fn is_empty(&self) -> bool {
         self.len() == 0
     }
diff --git a/library/alloc/src/vec/mod.rs b/library/alloc/src/vec/mod.rs
index 68e4add30e5..65a83cb98ba 100644
--- a/library/alloc/src/vec/mod.rs
+++ b/library/alloc/src/vec/mod.rs
@@ -2588,7 +2588,7 @@ impl<T, A: Allocator> Vec<T, A> {
     #[inline]
     #[track_caller]
     unsafe fn append_elements(&mut self, other: *const [T]) {
-        let count = unsafe { (*other).len() };
+        let count = other.len();
         self.reserve(count);
         let len = self.len();
         unsafe { ptr::copy_nonoverlapping(other as *const T, self.as_mut_ptr().add(len), count) };