Bug #9813: Module#initialize_copy does not clean the tables

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: r45873
• Backport: 2.0.0: DONE, 2.1: DONE

[nobu (Nobuyoshi Nakada)]

Module#initialize_copyで定数やインスタンス変数を持たないModuleをコピーしても、元の定数やインスタンス変数が残っています。

m = Module.new do
  def x
  end
  const_set(:X, 1)
  @x = 2
end
p m.instance_methods, m.instance_variables, m.constants
#=> [:x]
#=> [:@x]
#=> [:X]
m.module_eval do
  initialize_copy(Module.new)
end
p m.instance_methods, m.instance_variables, m.constants
#=> []
#=> [:@x]
#=> [:X]

1.8でinitialize_copyが導入された当初からあるバグのようです。

[nobu (Nobuyoshi Nakada)]

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

Applied in changeset r45874.

---

class.c: always clear tables first

• class.c (rb_mod_init_copy): always clear instance variable,
  constant and method tables first, regardless the source tables.
  [ruby-dev:48182] [Bug #9813]

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.0.0: REQUIRED, 2.1: REQUIRED to 2.0.0: REQUIRED, 2.1: DONE

Backported into ruby_2_1 branch at r46498.

[usa (Usaku NAKAMURA)]

backported into ruby_2_0_0 at r46519.

[usa (Usaku NAKAMURA)]

• Backport changed from 2.0.0: REQUIRED, 2.1: DONE to 2.0.0: DONE, 2.1: DONE