📝 allow mut_offset unused

src/detail/mod.rs

@@ -42,6 +42,7 @@ fn align_down(sp: *mut usize) -> *mut usize {
 
 // ptr::mut_offset is positive isize only
 #[inline]
+#[allow(dead_code)]
 fn mut_offset<T>(ptr: *mut T, count: isize) -> *mut T {
     // use std::mem::size_of;
     // (ptr as isize + count * (size_of::<T>() as isize)) as *mut T