Issue #9155 has been updated by hsbt (Hiroshi SHIBATA).

Assignee set to nobu (Nobuyoshi Nakada)
Priority changed from Normal to High

It happened will_paginate too. follow code.

https://github.com/mislav/will_paginate/blob/master/lib/will_paginate/page_number.rb

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Bug #9155: DelegateClass - ArgumentError: not delegated
https://bugs.ruby-lang.org/issues/9155#change-43145

Author: rhs (Russell Smith)
Status: Open
Priority: High
Assignee: nobu (Nobuyoshi Nakada)
Category: 
Target version: current: 2.1.0
ruby -v: ruby 2.1.0dev (2013-11-23 trunk 43807) [x86_64-darwin13.0]
Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN


Running the attached code gives ArgumentError: not delegated. It's unexpected as it worked on preview 1 and in 2.0.0. Error pasted below. https://gist.github.com/ukd1/9293c419a080d034f4bb - has sample code plus runs on 2.0.0p247 + 2.1.0-preview1 and 2.1.0-preview2

ArgumentError: not delegated
    from /Users/russ/.rvm/rubies/ruby-2.1.0-preview2/lib/ruby/2.1.0/delegate.rb:384:in `__getobj__'
    from /Users/russ/.rvm/rubies/ruby-2.1.0-preview2/lib/ruby/2.1.0/delegate.rb:77:in `method_missing'
    from (irb):5:in `initialize'
    from (irb):11:in `new'
    from (irb):11
    from /Users/russ/.rvm/rubies/ruby-2.1.0-preview2/bin/irb:11:in `<main>'


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