Eliminate some clang warnings in fnet.

1 files changed, 10 insertions, 10 deletions

diff --git a/fnet/src/tests/locking/lockspeed.cpp b/fnet/src/tests/locking/lockspeed.cpp
index aa4f6649fd9..50c8d4eef1b 100644
--- a/fnet/src/tests/locking/lockspeed.cpp
+++ b/fnet/src/tests/locking/lockspeed.cpp
@@ -144,16 +144,16 @@ TEST("lock speed") {
 
   start.SetNow();
   for (i = 0; i < 1000000; i++) {
-      std::mutex lock0;
-      std::mutex lock1;
-      std::mutex lock2;
-      std::mutex lock3;
-      std::mutex lock4;
-      std::mutex lock5;
-      std::mutex lock6;
-      std::mutex lock7;
-      std::mutex lock8;
-      std::mutex lock9;
+      [[maybe_unused]] std::mutex lock0;
+      [[maybe_unused]] std::mutex lock1;
+      [[maybe_unused]] std::mutex lock2;
+      [[maybe_unused]] std::mutex lock3;
+      [[maybe_unused]] std::mutex lock4;
+      [[maybe_unused]] std::mutex lock5;
+      [[maybe_unused]] std::mutex lock6;
+      [[maybe_unused]] std::mutex lock7;
+      [[maybe_unused]] std::mutex lock8;
+      [[maybe_unused]] std::mutex lock9;
   }
   stop.SetNow();
   stop -= start;