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-rw-r--r--odb/mssql/transaction.cxx4
1 files changed, 3 insertions, 1 deletions
diff --git a/odb/mssql/transaction.cxx b/odb/mssql/transaction.cxx
index 6a90969..6783489 100644
--- a/odb/mssql/transaction.cxx
+++ b/odb/mssql/transaction.cxx
@@ -2,6 +2,8 @@
// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
// license : ODB NCUEL; see accompanying LICENSE file
+#include <cassert>
+
#include <odb/mssql/transaction.hxx>
namespace odb
@@ -18,7 +20,7 @@ namespace odb
// no virtual functions. The former is checked in the tests.
//
odb::transaction& b (odb::transaction::current ());
- dynamic_cast<transaction_impl&> (b.implementation ());
+ assert (dynamic_cast<transaction_impl*> (&b.implementation ()) != 0);
return reinterpret_cast<transaction&> (b);
}
}