merge revision(s) 55063: [Backport #12391]
* thread.c (recursive_list_access): a object id may be a Bignum. so, the list must be a objhash, instead of a identhash. this fixes many test errors on mswin64 CI.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@55383 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 55063: [Backport #12391]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@55383 b2dd03c8-39d4-4d8f-98ff-823fe69b080e