Issue #8081 has been reported by shugo (Shugo Maeda).

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Backport #8081: Backport r39739
https://bugs.ruby-lang.org/issues/8081

Author: shugo (Shugo Maeda)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 


Please backport r39739.

   * object.c (Init_Object): remove Module#used, which has been
      introduced in Ruby 2.0 by mistake.  [Bug #7916] [ruby-core:52719]



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