Bug #9721: super: no superclass method in Ruby 2.1.1

• Status: Closed
• Assignee: -
• Target version: 2.2.0
• ruby -v: ruby 2.1.1p76 (2014-02-24 revision 45161) [x86_64-linux]
• Backport: 2.0.0: DONE, 2.1: DONE

[wehu (Wei Hu)]

Below code will result into error:

super: no superclass method `foo' for #<Object:0x002b0430670fe8>

However, it can pass with Ruby 1.9 and I am not sure if it's feature changes or bug.

module A
  def foo
    puts "A"
  end
end
 
module B
  def foo
    puts "B"
    super
  end
  ub_meth = instance_method :foo
  define_method :foo do
    ub_meth.bind(self).call()
  end
end
a = Object.new
a.extend A
a.extend B
a.foo

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)
• Category set to core
• Target version set to 2.2.0
• Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN to 2.0.0: REQUIRED, 2.1: REQUIRED

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)

[nobu (Nobuyoshi Nakada)]

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

Applied in changeset r45565.

---

proc.c: fix super in bound UnboundMethod

• proc.c (rb_method_call_with_block, umethod_bind): call with
  IClass including the module for a module instance method.
  [ruby-core:61936] [Bug #9721]
• vm_insnhelper.c (vm_search_super_method): allow bound
  UnboundMethod case.

[wehu (Wei Hu)]

Hi, Nakada,
Thanks for your fix, but this still has problem. If we run my original example, it will result into:

B
B
B
t.rb:9: stack level too deep (SystemStackError)

I think the difference is: in the original example, I used define_method :foo to override the foo in Module B.

[wehu (Wei Hu)]

• Copied to Bug #9740: super: no superclass method in Ruby 2.1.1 added

[usa (Usaku NAKAMURA)]

Backported r45564, r45565, r45584 and r45585 into ruby_2_0_0 at r46157.

[usa (Usaku NAKAMURA)]

• Backport changed from 2.0.0: REQUIRED, 2.1: REQUIRED to 2.0.0: DONE, 2.1: REQUIRED

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.0.0: DONE, 2.1: REQUIRED to 2.0.0: DONE, 2.1: DONE

r45179, r45564, r45565, r45584 and r45585 were backported into ruby_2_1 branch at r46190.