Prevent signals from being sent to pid 0

* Closes #544
rack · Apr 21, 2013 · 688516a · 688516a
1 parent 9939d40
commit 688516a
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/lib/rack/server.rb b/lib/rack/server.rb
@@ -337,6 +337,8 @@ 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