[ruby-cvs:78565] 00f4c13e22 (ruby_2_6): merge revision(s) 7d805e67f3275aef066d77aa9c32bef715c362ed: [Backport #15780]

nagachika	2019-12-09 21:25:34 +0900 (Mon, 09 Dec 2019)

  New Revision: 00f4c13e22

  https://github.com/ruby/ruby/commit/00f4c13e22

  Log:
    merge revision(s) 7d805e67f3275aef066d77aa9c32bef715c362ed: [Backport #15780]
    
    Avoid triggering autoload in Module#const_defined?(String)
    
    [Bug #15780]
    
    git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67831 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  Modified files:
    object.c
    spec/ruby/core/module/autoload_spec.rb
    test/ruby/test_autoload.rb
    version.h