It is neither portable nor obviously correct.
back
1 comments
Yes, it's both. It works fine in real world million line codebases. I have never, not once, seen a bug or portability issue caused by it. I have seen multiple header guard macro names collide.
Eschewing pragma once these days is pure ignorance and superstition --- then again, so is writing new code in C at all.
This good for you, other people reported problems with pragma once.
And I think C is one of the better languages you could use to write code today. Also from the programs I use daily, the more stable and reliable ones tend to be written in C.
Yep, header guard name collisions, and also typos in header guards so they don’t work as intended.