Backport #8357: Module#prepend breaks comparison operator

• Status: Closed
• Assignee: nagachika (Tomoyuki Chikanaga)

[skwosh (Alex Goldsmith)]

Array < Enumerable # => true
Enumerable.send :prepend, Module.new
Array < Enumerable # => nil
Array.ancestors.include? Enumerable # => true

Same thing happens in 2.0.0-p0.

Possibly similar to what's happening in: http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/53106

[marcandre (Marc-Andre Lafortune)]

• Priority changed from Normal to 6

Ouch.

=== is also broken:

Enumerable.send :prepend, Module.new
Enumerable === [] # => false, should be true

[marcandre (Marc-Andre Lafortune)]

• Assignee set to nobu (Nobuyoshi Nakada)

[nobu (Nobuyoshi Nakada)]

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

This issue was solved with changeset r40561.
Alex, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

object.c: skip prepending modules

• object.c (rb_obj_is_kind_of): skip prepending modules.
  [ruby-core:54742] [Bug #8357]
• object.c (rb_class_inherited_p): ditto.
  [ruby-core:54736] [Bug #8357]

[nagachika (Tomoyuki Chikanaga)]

• Tracker changed from Bug to Backport
• Project changed from Ruby master to Backport200
• Status changed from Closed to Assigned
• Assignee changed from nobu (Nobuyoshi Nakada) to nagachika (Tomoyuki Chikanaga)

[nagachika (Tomoyuki Chikanaga)]

• Status changed from Assigned to Closed

This issue was solved with changeset r40575.
Alex, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

merge revision(s) 40561: [Backport #8357]

* object.c (rb_obj_is_kind_of): skip prepending modules.
  [ruby-core:54742] [Bug #8357]

* object.c (rb_class_inherited_p): ditto.
  [ruby-core:54736] [Bug #8357]