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-rw-r--r--src/libexpr/symbol-table.hh2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libexpr/symbol-table.hh b/src/libexpr/symbol-table.hh
index ccdabb0280b4..9129f0f460c3 100644
--- a/src/libexpr/symbol-table.hh
+++ b/src/libexpr/symbol-table.hh
@@ -89,6 +89,8 @@ public:
     {
         return symbols.size();
     }
+
+    size_t totalSize() const;
 };
 
 }