diff options
| -rw-r--r-- | library/alloc/src/vec/mod.rs | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/library/alloc/src/vec/mod.rs b/library/alloc/src/vec/mod.rs index a55fce2760f..a6e7f08b00b 100644 --- a/library/alloc/src/vec/mod.rs +++ b/library/alloc/src/vec/mod.rs @@ -2144,6 +2144,8 @@ impl<T, A: Allocator> Vec<T, A> { let ptr = self.as_mut_ptr(); // SAFETY: // - `ptr` is guaranteed to be valid for `self.len` elements + // - but the allocation extends out to `self.buf.capacity()` elements, possibly + // uninitialized let spare_ptr = unsafe { ptr.add(self.len) }; let spare_ptr = spare_ptr.cast::<MaybeUninit<T>>(); let spare_len = self.buf.capacity() - self.len; |