ringbuffer write bug?

rt_size_t rt_ringbuffer_put_force(struct rt_ringbuffer *rb,
                            const rt_uint8_t     *ptr,
                            rt_uint16_t           length)
{
    if (rb->buffer_size - rb->write_index > length)
    {
        /* read_index - write_index = empty space */
        memcpy(&rb->buffer_ptr[rb->write_index], ptr, length);
    }

如果rb->buffer_size - rb->write_index == length，这种情况理论上是可以一次性写入的吧？

Start at the rt_ringbuffer_put_force function shown in the issue and inspect how buffer_size, write_index, and length define the writable range. Verify the boundary case where the remaining space equals length, then determine the expected behavior from the surrounding ring-buffer implementation before updating or documenting the condition.