Fix case of having no index at all

ahupowerdns · Feb 10, 2022 · 1517bdc · 1517bdc
1 parent fbcdc05
commit 1517bdc
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/lmdb-typed.hh b/lmdb-typed.hh
@@ -150,6 +150,13 @@ private:
             func(std::get<0>(tuple));
         }
     };
+    template <class Tuple> struct IndexIterator<Tuple, 0> {
+        static inline void apply(Tuple &tuple, auto &&func)
+        {
+            CPP_UTILITIES_UNUSED(tuple)
+            CPP_UTILITIES_UNUSED(func)
+        }
+    };
     void forEachIndex(auto &&func)
     {
         IndexIterator<tuple_t, std::tuple_size_v<tuple_t>>::apply(d_tuple, std::forward<decltype(func)>(func));