issue3770: if SEM_OPEN is 0, disable the mp.synchronize module, rev. Nick Coghlan, Damien Miller
diff --git a/Lib/test/test_multiprocessing.py b/Lib/test/test_multiprocessing.py
index 214a420..b0746e9 100644
--- a/Lib/test/test_multiprocessing.py
+++ b/Lib/test/test_multiprocessing.py
@@ -18,6 +18,14 @@
 import random
 import logging
 
+
+# Work around broken sem_open implementations
+try:
+    import multiprocessing.synchronize
+except ImportError, e:
+    from test.test_support import TestSkipped
+    raise TestSkipped(e)
+
 import multiprocessing.dummy
 import multiprocessing.connection
 import multiprocessing.managers