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-rw-r--r--library/alloc/src/vec/into_iter.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/library/alloc/src/vec/into_iter.rs b/library/alloc/src/vec/into_iter.rs
index b4797f37813..9b84a1d9b4b 100644
--- a/library/alloc/src/vec/into_iter.rs
+++ b/library/alloc/src/vec/into_iter.rs
@@ -169,7 +169,7 @@ impl<T, A: Allocator> Iterator for IntoIter<T, A> {
         let exact = if mem::size_of::<T>() == 0 {
             self.end.addr().wrapping_sub(self.ptr.addr())
         } else {
-            unsafe { self.end.unsigned_offset_from(self.ptr) }
+            unsafe { self.end.sub_ptr(self.ptr) }
         };
         (exact, Some(exact))
     }