Fix

bytecodealliance · Oct 16, 2024 · 2c9ff4f · 2c9ff4f
1 parent 5ea3724
commit 2c9ff4f
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/buffer.rs b/src/buffer.rs
@@ -15,8 +15,9 @@ pub(super) unsafe fn split_init(
     buf: &mut [MaybeUninit<u8>],
     init_len: usize,
 ) -> (&mut [u8], &mut [MaybeUninit<u8>]) {
-    debug_assert!(buf.len() <= init);
-    let uninit_len = buf.len().unchecked_sub(init_len);
+    debug_assert!(buf.len() <= init_len);
+    let buf_ptr = buf.as_mut_ptr();
+    let uninit_len = buf.len() - init_len;
     let init = slice::from_raw_parts_mut(buf_ptr.cast::<u8>(), init_len);
     let uninit = slice::from_raw_parts_mut(buf_ptr.add(init_len), uninit_len);
     (init, uninit)