- raise from cause here to preserve stack trace

diff --git a/lib/sqlalchemy/testing/exclusions.py b/lib/sqlalchemy/testing/exclusions.py
index f6ef72408c6c3787a9b51f8835371d04fe718840..3079f3a224fa65b3c05f5bdb9e83398523a7e247 100644 (file)
--- a/lib/sqlalchemy/testing/exclusions.py
+++ b/lib/sqlalchemy/testing/exclusions.py
@@ -123,7 +123,7 @@ 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: