The article describes why you can’t write code which is resistant to timing attacks in portable C, but then concludes that actually the code he wrote is correct

The article describes why you can’t write code which is resistant to timing attacks in portable C, but then concludes that actually the code he wrote is correct and it’s the compiler’s fault it didn’t work. It’s inconvenient that anything which cares about timing attacks cannot be securely written in C, but that doesn’t make the code not fundamentally incorrect and broken.