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-rw-r--r--library/alloc/src/vec.rs4
1 files changed, 2 insertions, 2 deletions
diff --git a/library/alloc/src/vec.rs b/library/alloc/src/vec.rs
index fa68fc1e2b4..5159ddc99b1 100644
--- a/library/alloc/src/vec.rs
+++ b/library/alloc/src/vec.rs
@@ -2164,8 +2164,8 @@ where
     }
 }
 
-// A helper struct for in-place iteration that drops the destination slice of iteration.
-// The source slice is dropped by IntoIter
+// A helper struct for in-place iteration that drops the destination slice of iteration,
+// i.e. the head. The source slice (the tail) is dropped by IntoIter.
 struct InPlaceDrop<T> {
     inner: *mut T,
     dst: *mut T,