Index: Lib/subprocess.py
===================================================================
--- Lib/subprocess.py	(Revision 69408)
+++ Lib/subprocess.py	(Arbeitskopie)
@@ -1151,6 +1151,9 @@
             if data != "":
                 os.waitpid(self.pid, 0)
                 child_exception = pickle.loads(data)
+                for fd in (p2cwrite, c2pread, errread):
+                    if fd is not None:
+                        os.close(fd)
                 raise child_exception