Use append instead of operator + to avoid temporaries

1 files changed, 4 insertions, 1 deletions

diff --git a/metrics/src/vespa/metrics/metric.cpp b/metrics/src/vespa/metrics/metric.cpp
index a7a212d759c..a8d8194b26d 100644
--- a/metrics/src/vespa/metrics/metric.cpp
+++ b/metrics/src/vespa/metrics/metric.cpp
@@ -173,7 +173,10 @@ Metric::getPath() const
     if (_owner == 0 || _owner->_owner == 0) {
         return getName();
     } else {
-        return _owner->getPath() + "." + getName();
+        vespalib::string path(_owner->getPath());
+        path.append('.');
+        path.append(getName());
+        return path;
     }
 }