How to find source_location of the code executed by super?

From ruby 2.2 you can use super_method like this:

Class A
  def pr
    puts "pr"
  end
end

Class B < A
  def pr
    puts "Super method: #{method(:pr).super_method}"
  end
end

As super_method returns a Method, you can chain them to find the ancestor:

def ancestor(m)
  m = method(m) if m.is_a? Symbol
  super_m = m.super_method
  if super_m.nil?
    return m
  else
    return ancestor super_m
  end
end