Forum: Ruby-core [ruby-trunk - Bug #8005][Open] Methods made private/protected after definition are made uncallable b

Issue #8005 has been reported by skwosh (Alex Goldsmith).

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Bug #8005: Methods made private/protected after definition are made 
uncallable by prepend
https://bugs.ruby-lang.org/issues/8005

Author: skwosh (Alex Goldsmith)
Status: Open
Priority: Normal
Assignee:
Category:
Target version:
ruby -v: ruby 2.0.0p0 (2013-02-24 revision 39474) [x86_64-darwin12.2.0]


Prepending a module seems to break method resolution for methods that 
have been made `private` or `protected` via the `def private *names` and 
`def protected *names` methods.

___

class A
end

A.send :prepend, Module.new {} # Works if this line is removed...

class A
  def foo() end
  protected :foo # Also works if we use the argument-less form of 
"protected"...
end

A.new.respond_to? :foo, true # => true

A.new.send :foo # => NoMethodError: undefined method `foo' for #<A:...>

___

Note that it correctly reports that it can respond_to?...

This breaks in Rails 4 when trying to prepend to an ActiveRecord::Base 
(due to dynamically defined model callbacks).