- raise from cause here to preserve stack trace

diff --git a/lib/sqlalchemy/testing/exclusions.py b/lib/sqlalchemy/testing/exclusions.py
index 283d89e3688ef8fd1e4c49a7b530bef72cf34b10..49211f8051e76a5394f6e1f22be971bafc605681 100644 (file)
--- a/lib/sqlalchemy/testing/exclusions.py
+++ b/lib/sqlalchemy/testing/exclusions.py
@@ -133,7 +133,7 @@ class compound(object):
                     name, fail._as_string(config), str(ex))))
                 break
         else:
-            raise ex
+            util.raise_from_cause(ex)
 
     def _expect_success(self, config, name='block'):
         if not self.fails: