From: Kenta Murata <muraken@...>
Date: 2011-07-22T22:19:59+09:00
Subject: [ruby-core:38398] [Ruby 1.9 - Bug #5077][Rejected] method_missing throws NoMemoryError after inheriting from BasicObject


Issue #5077 has been updated by Kenta Murata.

Status changed from Open to Rejected
Priority changed from High to Normal

BasicObject doesn't include Kernel module.
It is a spec.

----------------------------------------
Bug #5077: method_missing throws NoMemoryError after inheriting from BasicObject
http://redmine.ruby-lang.org/issues/5077

Author: Farruco Sanjurjo
Status: Rejected
Priority: Normal
Assignee: 
Category: 
Target version: 1.9.2
ruby -v: ruby 1.9.2p290 (2011-07-09 revision 32478) [x86_64-linux]


If a class inherits from BasicObject and then overwrites method_missing like this:

class A < BasicObject
  def method_missing(*a)
     puts "#{a}"
  end
end

And we try it:

A.new.fooooo


The interpreter enters what looks like a loop and then crashes with this trace (in irb):

NoMemoryError: failed to allocate memory
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'
	from (irb):3:in `method_missing'

If we create the same class with the same method_missing but without inheriting from BasicObject it works right.


-- 
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