FunTester

Aug 2, 2019 · Fundamentals

How a Simple Leap-Year Logic Mistake Turned Zune’s Date Driver into a Legendary Bug

A historic bug in Microsoft Zune’s date‑update driver arose from a flawed leap‑year handling loop, and the article explains the faulty code, why it failed, its wide impact, and how thorough boundary‑value testing could have prevented it.