clang10 proting

Change-Id: I071833f9d1f46df105f7ef1749c5d17d989bbb05


[ROCm/rocprofiler commit: 04aea8c3df]

projects/rocprofiler/src/core/context.h

@@ -257,7 +257,7 @@ class Context {
 
   void GetMetricsData() const {
     const MetricArgs<info_map_t> args(info_map_);
-    for (const auto v : metrics_map_) {
+    for (const auto& v : metrics_map_) {
       const std::string& name = v.first;
       const Metric* metric = v.second;
       const xml::Expr* expr = metric->GetExpr();

projects/rocprofiler/src/core/metrics.h

@@ -277,7 +277,7 @@ class MetricsDict {
             std::cout << name << "=" << expr_obj->String() << "\n" << std::endl;
 #endif
             counters_vec_t counters_vec;
-            for (const std::string var : expr_obj->GetVars()) {
+            for (const std::string& var : expr_obj->GetVars()) {
               auto it = cache_.find(var);
               if (it == cache_.end()) {
                 EXC_RAISING(HSA_STATUS_ERROR, "Bad metric '" << name << "', var '" << var << "' is not found");