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Bug #13115

closed

`YAML.dump` outputs deperecated message even with delegated object

Added by mtsmfm (Fumiaki Matsushima) about 8 years ago. Updated about 6 years ago.

Status:
Closed
Assignee:
tenderlovemaking (Aaron Patterson)
Target version:
-
ruby -v:
ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-linux]
Backport:
2.2: UNKNOWN, 2.3: UNKNOWN, 2.4: UNKNOWN
[ruby-core:79013]

Description

YAML.dump outputs deprecated message if it calls with delegated object
but doesn't with inherited object:

require 'yaml'
require 'delegate'

$VERBOSE = true
class Delegated < DelegateClass(Object)
  def initialize
    super(Object.new)
  end
end

puts 'YAML.dump(Delegated.new)'
YAML.dump(Delegated.new)

class Inherited < Object
end
puts 'YAML.dump(Inherited.new)'
YAML.dump(Inherited.new)

# $ ruby test.rb
# YAML.dump(Delegated.new)
# implementing to_yaml is deprecated, please implement "encode_with"
# YAML.dump(Inherited.new)

Is this intentional?

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