Issue #8411 has been updated by Hiroshi SHIBATA.

Status changed from Open to Rejected

this issue is affected only Ruby 1.9.

```
ruby 1.9.3p547 (2014-05-14) [x86_64-darwin13.4.0]
-1
0

ruby 2.0.0p531 (2014-07-07 revision 46748) [x86_64-darwin13.4.0]
-1
-1

ruby 2.1.2p200 (2014-08-11 revision 47141) [x86_64-darwin13.0]
-1
-1

ruby 2.2.0dev (2014-08-14 trunk 47177) [x86_64-darwin13]
-1
-1
```

Ruby 1.9.3 is now in the security maintenance phase.

----------------------------------------
Bug #8411: Wrong value returned when arity called on a method created through define_method with default arguments
https://bugs.ruby-lang.org/issues/8411#change-48348

* Author: John Amicangelo
* Status: Rejected
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
* ruby -v: ruby 1.9.3p429 (2013-05-15 revision 40747) [x86_64-darwin12.3.0]
* Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN
----------------------------------------
 def foo(bizz=:bizz, baz=:baz, buzz=:buzz)
 end
 
 Object.send(:define_method, :bar) do |bizz=:bizz, baz=:baz, buzz=:buzz|
 end
 
 puts method(:foo).arity
 puts method(:bar).arity

Expected:
-1
-1

Actual:
-1
0



-- 
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