Index: test/test_subprocess.py
===================================================================
--- test/test_subprocess.py	(revisión: 69009)
+++ test/test_subprocess.py	(copia de trabajo)
@@ -520,6 +520,30 @@
         else:
             self.fail("Expected TypeError")
 
+
+    def test_issue5099(self):
+        f, fname = self.mkstemp()
+        os.write(f,
+        """if 1:
+                import subprocess,sys,time
+                # whatever, but successful
+                p = subprocess.Popen([sys.executable, '-c', '0']) 
+                time.sleep(2)
+                del subprocess
+                del sys.modules['subprocess']
+                del p
+        """)
+        os.close(f)
+        p = subprocess.Popen([sys.executable, fname],
+                    stdin=None,
+                    stdout=subprocess.PIPE,
+                    stderr=subprocess.PIPE)
+        (stdout, stderr) = p.communicate()
+        self.assertEqual(stdout, '')
+        self.assertEqual(stderr, '')
+        os.remove(fname)
+
+
     #
     # POSIX tests
     #