1 files changed, 2 insertions, 0 deletions
diff --git a/session.h b/session.h
index f45f6c77..ccf6c1da 100644
--- a/session.h
+++ b/session.h
@@ -22,6 +22,7 @@ extern "C" {
 
 
 // forward decls for all referenced systemtap types
+struct hash;
 struct match_node;
 struct stapfile;
 struct vardecl;
@@ -131,6 +132,7 @@ struct systemtap_session
   std::string cache_path;
   std::string hash_path;
   std::string stapconf_path;
+  hash *base_hash;
 
   // dwarfless operation
   bool consult_symtab;