Bug #15629: super_method fails on binded/unbinded/cloned methods

• Status: Open
• Priority: Normal
• Assignee: -
• Target version: -
• Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN

[wanabe (_ wanabe)]

derived from #13973:

module A
  def foo
  end
end

module B
  def foo
  end
end

class C
  include A
  include B
end

c = C.new
m1 = c.method(:foo)
p m1.super_method         # => #<Method: A#foo>
p m1.clone.super_method   # => nil
p m1.unbind.super_method  # => nil

m2 = C.instance_method(:foo)
p m2.super_method         # => #<UnboundMethod: A#foo>
p m2.clone.super_method   # => nil
p m2.bind(c).super_method # => nil

super_method of binded/unbinded/cloned method should be super_method of original method, shouldn't it?

[wanabe (_ wanabe)]

• Related to Bug #13973: super_method fails on some UnboundMethods added

[jeremyevans0 (Jeremy Evans)]

• File super_method-bind-unbind-clone-15629.patch super_method-bind-unbind-clone-15629.patch added

This bug is due to the fact that bind/unbind/clone do not copy the iclass entry, and without an iclass entry, super_method returns nil. Attached is a patch that fixes this issue.