Computed GOTOs in C are just pointer arithmetic and casts.

Can you jump to a computed GOTO in C? I guess you can if you cast to a function pointer...

I’m no C language lawyer, but it’s hard to imagine that sort of voodoo won’t trigger some kind of undefined behaviour that’ll cause the optimizer to erase your program at best and summon nasal demons at worst.

Yes, but it’s a GCC extension, not standard.

I remember the comp.compilers moderator calling C a Fortran-like language.

Well, that's a joke referring to the typical Computer Science jargon of calling them both Algol-like languages.

I don't recall him saying that while I used to read that group, but I would have chuckled.