1 files changed, 10 insertions, 2 deletions
diff --git a/Lib/test/test_wait4.py b/Lib/test/test_wait4.py
index 027e5c3..9f7fc14 100644
--- a/Lib/test/test_wait4.py
+++ b/Lib/test/test_wait4.py
@@ -2,8 +2,9 @@
 """
 
 import os
+import time
 from test.fork_wait import ForkWait
-from test.test_support import TestSkipped, run_unittest
+from test.test_support import TestSkipped, run_unittest, reap_children
 
 try:
     os.fork
@@ -17,13 +18,20 @@ except AttributeError:
 
 class Wait4Test(ForkWait):
     def wait_impl(self, cpid):
-        spid, status, rusage = os.wait4(cpid, 0)
+        for i in range(10):
+            # wait4() shouldn't hang, but some of the buildbots seem to hang
+            # in the forking tests.  This is an attempt to fix the problem.
+            spid, status, rusage = os.wait4(cpid, os.WNOHANG)
+            if spid == cpid:
+                break
+            time.sleep(1.0)
         self.assertEqual(spid, cpid)
         self.assertEqual(status, 0, "cause = %d, exit = %d" % (status&0xff, status>>8))
         self.assertTrue(rusage)
 
 def test_main():
     run_unittest(Wait4Test)
+    reap_children()
 
 if __name__ == "__main__":
     test_main()