[ruby-core:77280] [Ruby trunk Bug#12761] Ruby 2.3.1 has a bug in `Module#alias` and `Module#alias_method`
From:
shyouhei@...
Date:
2016-09-15 01:28:43 UTC
List:
ruby-core #77280
Issue #12761 has been updated by Shyouhei Urabe.
IMHO this is a known bug yet to be fixed.
----------------------------------------
Bug #12761: Ruby 2.3.1 has a bug in `Module#alias` and `Module#alias_method`
https://bugs.ruby-lang.org/issues/12761#change-60514
* Author: Alexei Matyushkin
* Status: Open
* Priority: Normal
* Assignee:
* ruby -v: ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-linux], ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-linux]
* Backport: 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN
----------------------------------------
Consider the following code:
~~~ ruby
module M
def original ; puts __callee__ ; end
alias_method :aliased, :original
end
class A
include M
end
A.new.original
#⇒ original
A.new.aliased
#⇒ aliased
~~~
The above code runs perfectly fine in Ruby 2.1 and returns the actual method name, as it is supposed to be done by [`Kernel#__callee__`](https://ruby-doc.org/core-2.3.1/Kernel.html#method-i-__callee__).
Surprisingly enough, the code above _does not work as expected_ in Ruby 2.3.1:
~~~ ruby
A.new.original
#⇒ original
A.new.aliased
#⇒ original
~~~
The same happens for `alias` as well.
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