Examples of errors detected by the V8031 diagnostic

V8031. Using the call of the 'len' function as an index will result in an off-by-one error.

Ferret

V8031 Using the call of the 'len' function as index will cause off-by-one error. Consider using 'len(slice) - 1' instead. vector.go 28

func (vec *Vector) Push(value core.Value) *Vector {
  slice := vec.getCurrentSlice()
  slice[len(slice)] = value

  return vec
}

bfe

V8031 Using the call of the 'len' function as index will cause off-by-one error. Consider using 'len(b) - 1' instead. ast.go 138

type BasicLitList []*BasicLit
....
func (b BasicLitList) End() token.Pos {
  return b[len(b)].End()
}