segfault.rb

segfault.rb

class Foo
  include Enumerable

  def each(&block)
    [].__send__(:each, &block)
  rescue Exception
  end

  def more
    to_a # any method from enumerable
    [self]
  end
end

def call(resource)
  resource.more.each(&method(__method__))
end

Thread.new do
  Kernel.catch(Exception.new) do
    call(Foo.new)
  end
end.join

# It is expected to:
# a) Raise a system stack error (expected)
# b) Segfault (Bug in MRI I'm hunting)
# c) Hang (Serve bug in MRI I'm hunting) please also check via strace / gdb if a segfault happened and the signal handler is trapped in a futex
# Context: https://github.com/mbj/mutant/issues/265

mathieu@ubuntu-1404 (i-123):~$ ruby segfault.rb 
Segmentation fault (core dumped)                                                                                                                                                     
mathieu@ubuntu-1404 (i-123):~$    

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