Use normal for loop instead of accumulate.

Author: IYP-Programer-Yeah

googletest/src/gtest.cc

@@ -50,7 +50,6 @@
 #include <limits>
 #include <list>
 #include <map>
-#include <numeric>
 #include <ostream>  // NOLINT
 #include <sstream>
 #include <vector>
@@ -771,10 +770,11 @@ class PositiveAndNegativeUnitTestFilter {
       // TODO: Fail on multiple '-' characters
       // For the moment to preserve old behavior we concatenate the rest of the
       // string parts with `-` as separator to generate the negative filter.
-      negative_filter_ = UnitTestFilter{std::accumulate(
-          positive_and_negative_filters.begin() + 2,
-          positive_and_negative_filters.end(), positive_and_negative_filters[1],
-          [](const std::string& lhs, const std::string& rhs) { return lhs + '-' + rhs; })};
+      auto negative_filter_string = positive_and_negative_filters[1];
+      for (std::size_t i = 2; i < positive_and_negative_filters.size(); i++)
+        negative_filter_string =
+            negative_filter_string + '-' + positive_and_negative_filters[i];
+      negative_filter_ = UnitTestFilter{negative_filter_string};
     } else {
       // In case we don't have a negative filter and positive filter is ""
       // we do not use kUniversalFilter by design as opposed to when we have a