Bug #2375: protected singleton methods can be called from other instances

• Status: Closed
• Assignee: matz (Yukihiro Matsumoto)
• Target version: -
• ruby -v: 1.9.2dev

[shugo (Shugo Maeda)]

=begin
It seems that protected singleton methods of an object can be called from other instances of the class of the object.

class Foo
end

FOO = Foo.new

class << FOO
protected

 def bar
   puts "bar"
 end

end

class Foo
def baz
FOO.bar
end
end

FOO.baz
Foo.new.baz # CRuby does not raise NoMethodError, but IronRuby does.

On IronRuby, Foo.new.baz raies NoMethodError, and I guess it's more reasonable than the behavior of CRuby. I have attached a patch.

However, I haven't been able to find any use cases of protected singleton methods.
=end

[matz (Yukihiro Matsumoto)]

=begin
Hi,

In message "Re: [ruby-core:26761] [Bug #2375] protected singleton methods can be called from other instances"
on Mon, 16 Nov 2009 14:26:23 +0900, Shugo Maeda [e-mail] writes:

|On IronRuby, Foo.new.baz raies NoMethodError, and I guess it's more reasonable than the behavior of CRuby. I have attached a patch.
|
|However, I haven't been able to find any use cases of protected singleton methods.

Agreed. But consistency matters when there's no side effect. Please
check it in to the repository.

						matz.

=end

[shugo (Shugo Maeda)]

• Status changed from Open to Closed
• % Done changed from 0 to 100

=begin
This issue was solved with changeset r25796.
Shugo, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

=end