1 files changed, 12 insertions, 0 deletions
diff --git a/odb/exceptions.hxx b/odb/exceptions.hxx
index ff97873..8c9e826 100644
--- a/odb/exceptions.hxx
+++ b/odb/exceptions.hxx
@@ -16,26 +16,38 @@ namespace odb
 {
   struct LIBODB_EXPORT already_in_transaction: odb::exception
   {
+    virtual const char*
+    what () const throw ();
   };
 
   struct LIBODB_EXPORT not_in_transaction: odb::exception
   {
+    virtual const char*
+    what () const throw ();
   };
 
   struct LIBODB_EXPORT transaction_already_finilized: odb::exception
   {
+    virtual const char*
+    what () const throw ();
   };
 
   struct LIBODB_EXPORT deadlock: odb::exception
   {
+    virtual const char*
+    what () const throw ();
   };
 
   struct LIBODB_EXPORT object_not_persistent: odb::exception
   {
+    virtual const char*
+    what () const throw ();
   };
 
   struct LIBODB_EXPORT object_already_persistent: odb::exception
   {
+    virtual const char*
+    what () const throw ();
   };
 
   struct LIBODB_EXPORT database_exception: odb::exception