In my early Fortran days (2014ish), I was looking for a bug in someone else's F77 code. I found code like this
call DAXPY(n, a, Y(1, j), 1, Z(1, k), 1)
and I thought I found the problem. How could we we pass a scalar with length but tell the method it had length n?
Except that's just how Fortran works. Code like that is everywhere. You pass by reference to the first value. That's the whole reason the length (and stride) is passed at all.
So yeah, I felt (and was) silly emailing about that. Fortunately I got better at it.