Hacker News Reader

It's a book (in progress), not an article, and it is talking in large part about compilers for unmanaged languages.

As far as I've understood the article is about how to fool a CPU.

Hardly that, is about corrupting a state to take control. The CPU just does what it's told (not true, halfway down it starts on Covert channels and side-channels which are a different thing entirely).

On the 1st half, I'm uncertain how it relates to compilers.

From skimming a few pages, it seems to be C-family compilers in general.