Check the return value of & to avoid warnings
Check the return value of & to avoid warnings

nobu/rubyspec,nobu/rubyspec,ruby/rubyspec,nobu/rubyspec,eregon/rubyspec,eregon/rubyspec,sgarciac/spec,sgarciac/spec,ruby/rubyspec,eregon/rubyspec,ruby/spec,ruby/spec,sgarciac/spec,ruby/spec