c is undefined, we mean connection here

diff --git a/lib/sqlalchemy/orm/mapper.py b/lib/sqlalchemy/orm/mapper.py
index dc0799d147a77d5bef55a2a30bd5db4fcd52f196..2b050ebff683c5455d9e89f558507d80c9fe24a6 100644 (file)
--- a/lib/sqlalchemy/orm/mapper.py
+++ b/lib/sqlalchemy/orm/mapper.py
@@ -2063,7 +2063,7 @@ class Mapper(object):
                         util.warn(
                             "Dialect %s does not support deleted rowcount "
                             "- versioning cannot be verified." % 
-                            c.dialect.dialect_description,
+                            connection.dialect.dialect_description,
                             stacklevel=12)
                         connection.execute(statement, del_objects)
                 else: