> [Go] is like C in that you can fit the whole language in your head.
Go isn't like C in that you can actually fit the entire language in your head. Most of us who think we have fit C in our head will still stumble on endless cases where we didn't realize X was actually UB or whatever. I wonder how much C's reputation for simplicity is an artifact of its long proximity to C++?
30 years in C/C++ here.
Give an example of UB code that you have committed in real life, not from blogs. I am genuinely curious.