merge revision(s) 66973: [Backport #15577]
Run r66972 assertion only when a sticky-bit makes sense
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67210 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 66973: [Backport #15577]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_6@67210 b2dd03c8-39d4-4d8f-98ff-823fe69b080e