test/thread/test_cv.rb: test CV usability inside forked child
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63310 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test/thread/test_cv.rb: test CV usability inside forked child
[Bug #14725]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63310 b2dd03c8-39d4-4d8f-98ff-823fe69b080e