avoid thread switching.
The test may fail if thread switches to d or e before assertions.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35423 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
avoid thread switching.
The test may fail if thread switches to d or e before assertions.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@35423 b2dd03c8-39d4-4d8f-98ff-823fe69b080e