Ah, thanks for the link; yes this is the one I was referring to. I had thought it was by Bjarne since it was on his site, but either way, it's an interesting read.
Interesting. I wonder how compiler-dependent rule 10 is. Like, if I'm writing for a compiler that gives really bad and usually unhelpful warnings that make my code worse... but I suppose these are more very strict guidelines than rules.
That section explicitly addresses that question and says you should rewrite it in a way that avoids the warning, since "usually unhelpful" means "sometimes critical". It's certainly an uncompromising view but that's what you get when failure is disastrous.
https://www.stroustrup.com/JSF-AV-rules.pdf
which is linked from the Applications page of Bjarne's website.