Ruby Warts

#!/usr/bin/ruby

class Book
  def open(path)
    @file = open(path)
  end
end

f = open("/dev/zero")
puts f

b = Book.new
b.open("/dev/zero")
puts b

This program opens a file, prints the file's object ID, then crashes with a segmentation fault.

The reason it crashes is that Book.open calls itself recursively, until the stack overflows.

This is a double wart, because not only does the program recurse into oblivion, but it segfaults instead of raising an exception to handle the problem.