Bug #8041: Marshal incompatibility with prepend

• Status: Closed
• Assignee: -
• Target version: 2.1.0
• ruby -v: r39629

[marcandre (Marc-Andre Lafortune)]

=begin
Marshal doesn't work for objects with prepended modules:

o = Object.new
o.singleton_class.send :include, Enumerable
Marshal.load(Marshal.dump(o)) # => ok

o = Object.new
o.singleton_class.send :prepend, Enumerable
Marshal.load(Marshal.dump(o)) # => ArgumentError: Object does not refer to module

=end

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)

=begin
To be honest, I haven't considered about marshaling prepended objects at all.
How could we represent it?

(1) add new type, (({TYPE_PREEXTEND})) for example.
(2) allow the current dumped format and treat the class in extending modules as the mark of prepend.

The former may need marshal version to bump up, I don't want it.
=end

[nobu (Nobuyoshi Nakada)]

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

This issue was solved with changeset r39642.
Marc-Andre, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

marshal.c: prepended objects

• marshal.c (r_object0): load prepended objects. treat the class of
  extended object in the included modules as prepended singleton
  class. [ruby-core:53202] [Bug #8041]