Bug #8817: Method#owner on prepended classes is an instance rather than Class/Method

• Status: Closed
• Priority: Normal
• Assignee: -
• ruby -v: ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-darwin12.4.0]
• Backport: 1.9.3: DONTNEED, 2.0.0: DONE

[Bradley Schaefer]

rdoc indicates that Method#owner will return a class or module that defines a method. http://www.ruby-doc.org/core-2.0/Method.html#method-i-owner

For classes that have prepended modules, the owner is actually an instance.

Example code:

module Mod; end

class Foo
prepend Mod
def foo; 'foo'; end
end

owner = Foo.instance_method(:foo).owner
puts "Method#owner on a prepended class instance_method: #{owner.inspect}" #=> #Foo:0x007fd34dfd3ea0
puts "Class?: #{owner.is_a? Class}" #=> false
puts "Module?: #{owner.is_a? Module}" #=> false

This had the effect of breaking stubbing in rspec (https://github.com/rspec/rspec-mocks/pull/385) , though a workaround is that the expected Class/Module can be retrieved by asking for the returned object's class.

[Jack Nagel]

This appears to have been fixed by r44175.

Can it be backported (perhaps with a regression test for this specific bug)?

[Nobuyoshi Nakada]

• Status changed from Open to Closed
• Backport changed from 1.9.3: UNKNOWN, 2.0.0: UNKNOWN to 1.9.3: DONTNEED, 2.0.0: REQUIRED

Thank you, I missed this ticket.

[Tomoyuki Chikanaga]

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

sorry for my late response. r44175 and r44179 were already backported to ruby_2_0_0. see #7993