lib/rack/server.rb in rack-1.4.5 vs lib/rack/server.rb in rack-1.4.6

@@ -335,9 +335,11 @@
 
       def pidfile_process_status
         return :exited unless ::File.exist?(options[:pid])
 
         pid = ::File.read(options[:pid]).to_i
+        return :dead if pid == 0
+
         Process.kill(0, pid)
         :running
       rescue Errno::ESRCH
         :dead
       rescue Errno::EPERM