read may return nil

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52689 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
deivid-rodriguez · Nov 20, 2015 · 9ddeb95 · 9ddeb95
1 parent ba772af
commit 9ddeb95
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/test/lib/test/unit.rb b/test/lib/test/unit.rb
@@ -325,7 +325,7 @@ def quit_workers
       def deal(io, type, result, rep, shutting_down = false)
         worker = @workers_hash[io]
         cmd = worker.read
-        cmd.sub!(/\A\.+/, '')
+        cmd.sub!(/\A\.+/, '') if cmd # read may return nil
         case cmd
         when ''
           # just only dots, ignore