1 files changed, 17 insertions, 0 deletions
diff --git a/odb/exceptions.hxx b/odb/exceptions.hxx
index b55b2a4..9e37967 100644
--- a/odb/exceptions.hxx
+++ b/odb/exceptions.hxx
@@ -113,6 +113,20 @@ namespace odb
   {
   };
 
+  // Polymorphism support exceptions.
+  //
+  struct LIBODB_EXPORT abstract_class: exception
+  {
+    virtual const char*
+    what () const throw ();
+  };
+
+  struct LIBODB_EXPORT no_type_info: exception
+  {
+    virtual const char*
+    what () const throw ();
+  };
+
   // Schema catalog exceptions.
   //
   struct LIBODB_EXPORT unknown_schema: exception
@@ -156,6 +170,9 @@ namespace odb
     using odb::result_not_cached;
     using odb::database_exception;
 
+    using odb::abstract_class;
+    using odb::no_type_info;
+
     using odb::unknown_schema;
   }
 }