Issue #9570 has been reported by  .

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Bug #9570: Something wrong with Enumerator#size ?
https://bugs.ruby-lang.org/issues/9570

* Author:  
* Status: Open
* Priority: Normal
* Assignee: Yukihiro Matsumoto
* Category: core
* Target version: next minor
* ruby -v: Ruby 2.0.0-p451
* Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN, 2.1: UNKNOWN
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enum = 2.step(1, 3)
enum.size  #=> 1

It should be 0, shouldn't it? ( Windows )



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