Bug #7993: owner of methods defined after using Module#prepend

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: RUBY_DESCRIPTION # => "ruby 2.1.0dev (2013-03-01 trunk 39546) [x86_64-linux]"
• Backport: 1.9.3: DONTNEED, 2.0.0: DONE

[no6v (Nobuhiro IMAI)]

The owner of methods defined after using Module#prepend seems to be incorrect.

RUBY_DESCRIPTION # => "ruby 2.1.0dev (2013-03-01 trunk 39546) [x86_64-linux]"

class C
  attr_reader :a
  prepend Module.new
  attr_reader :b
end
C.instance_method(:a).owner # => C
C.instance_method(:b).owner # => #<C:0x00000000a52300>
C.new.method(:a).owner      # => C
C.new.method(:b).owner      # => #<C:0x00000000a52300>

module M
  attr_reader :a
  prepend Module.new
  attr_reader :b
end
M.instance_method(:a).owner # => M
M.instance_method(:b).owner # =>
# ~> -:19:in `<main>': undefined method `class' for #<M:0x00000000a515b8> (NoMethodError)

[marcandre (Marc-Andre Lafortune)]

Agreed. I described this in [ruby-core:52261], part of issue #7842.

[nobu (Nobuyoshi Nakada)]

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

This issue was solved with changeset r44175.
Nobuhiro, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

proc.c, vm_method.c: fix super and alias

• proc.c (method_owner): return the class where alias is defined, not
  the class original method is defined.
• vm_method.c (rb_method_entry_make, rb_alias): store the originally
  defined class in me. [Bug #7993] [Bug #7842] [Bug #9236]
• vm_method.c (rb_method_entry_get_without_cache): cache included
  module but not iclass.

[nobu (Nobuyoshi Nakada)]

• Backport set to 1.9.3: DONTNEED, 2.0.0: REQUIRED

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 1.9.3: DONTNEED, 2.0.0: REQUIRED to 1.9.3: DONTNEED, 2.0.0: DONE

r44175 and r44179 were backported to ruby_2_0_0 at r44345, and additionally r44198 was backported at 44366.
See #9236 too.

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)

[nobu (Nobuyoshi Nakada)]

• Related to Bug #7987: Method#parameters should consider a prepended or refined methd added