Remove unused variables.

1 files changed, 5 insertions, 0 deletions

diff --git a/vespalib/src/tests/dotproduct/dotproductbenchmark.cpp b/vespalib/src/tests/dotproduct/dotproductbenchmark.cpp
index e95e8a5c58b..5d7817bc59b 100644
--- a/vespalib/src/tests/dotproduct/dotproductbenchmark.cpp
+++ b/vespalib/src/tests/dotproduct/dotproductbenchmark.cpp
@@ -5,6 +5,7 @@
 #include <iostream>
 #include <vector>
 #include <thread>
+#include <functional>
 
 using namespace vespalib;
 using vespalib::hwaccelrated::IAccelrated;
@@ -106,6 +107,8 @@ SparseBenchmark::SparseBenchmark(size_t numDocs, size_t numValues, size_t numQue
 }
 SparseBenchmark::~SparseBenchmark() = default;
 
+std::function<void(int)> use_sum = [](int) noexcept { };
+
 class UnorderedSparseBenchmark : public SparseBenchmark
 {
 private:
@@ -124,6 +127,7 @@ private:
                 sum += static_cast<int64_t>(_values[offset + i]._value) * it->second;
             }
         }
+        use_sum(sum);
     }
     map _query;
 };
@@ -154,6 +158,7 @@ private:
                 sum += static_cast<int64_t>(_values[offset + b]._value) * _query[a]._value;
             }
         }
+        use_sum(sum);
     }
     std::vector<P> _query;
 };