Method grow

aiscript-arena/src/allocator_api.rs:86–98

(
        &self,
        ptr: NonNull<u8>,
        old_layout: Layout,
        new_layout: Layout,
    )

    #[inline]
    unsafe fn grow(
        &self,
        ptr: NonNull<u8>,
        old_layout: Layout,
        new_layout: Layout,
    ) -> Result<NonNull<[u8]>, AllocError> {
        unsafe {
            let ptr = self.allocator.grow(ptr, old_layout, new_layout)?;
            self.metrics
                .mark_external_allocation(new_layout.size() - old_layout.size());
            Ok(ptr)
        }
    }

    #[inline]
    unsafe fn grow_zeroed(