Debug SystemStackError with this utility file.

stack_overflow_debugger.rb

max_stack_frames = 500

TooManyStackFrames = Class.new(StandardError)

set_trace_func proc { |event, file, line, id, binding, classname|
  if event == "call" && caller.size >= max_stack_frames
    raise TooManyStackFrames, "Stack has exceeded #{max_stack_frames} frames"
  end
}