Bug #12393: SingleForwardable broken in 2.2.5

• Status: Closed
• Assignee: keiju (Keiju Ishitsuka)
• Target version: -
• ruby -v: ruby 2.2.5p319 (2016-04-26 revision 54774) [x86_64-darwin15]
• Backport: 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN

[RichSeviora (Richard Seviora)]

The change to forwardable.rb in 2.2.5 seem to have broken the instance delegation method.

As per the example in the code, running the following now generates a NoMethodError for method_defined?.

printer = String.new
printer.extend SingleForwardable
printer.def_delegator "STDOUT", "puts"  # Generates error here.
printer.puts "Howdy!" # Cannot reach

Generates error:

NoMethodError: undefined method `method_defined?' for "":String
from /Users/richardseviora/.rbenv/versions/2.2.5/lib/ruby/2.2.0/forwardable.rb:278:in `def_single_delegator'

[jeremyevans0 (Jeremy Evans)]

• Status changed from Open to Closed