oepsje woepsje

Author: nia-e

library/alloc/src/collections/vec_deque/mod.rs

@@ -3655,7 +3655,7 @@ impl<T: Clone, A: Allocator> SpecExtendFromWithin for VecDeque<T, A> {
         // SAFETY:
         // - Ranges do not overlap: src entirely spans initialized values, dst entirely spans uninitialized values.
         // - Ranges are in bounds: guaranteed by the caller.
-        let ranges = self.nonoverlapping_ranges(src, dst, count, new_head);
+        let ranges = unsafe { self.nonoverlapping_ranges(src, dst, count, new_head) };
 
         // Cloning is done in reverse because we prepend to the front of the deque,
         // we can't get holes in the *logical* buffer.
@@ -3693,7 +3693,8 @@ impl<T: Clone, A: Allocator> SpecExtendFromWithin for VecDeque<T, A> {
             for offset in iter {
                 // SAFETY: Untriaged.
                 unsafe { dst.add(offset).write((*src.add(offset)).clone()) };
-                self.head = self.head.sub(1);
+                // SAFETY: Untriaged.
+                self.head = unsafe { self.head.sub(1) };
                 self.len += 1;
             }
         }