fix compiler warnings/error under gcc 4.1 and 4.2

[nbds] / runtime / rcu.c

diff --git a/runtime/rcu.c b/runtime/rcu.c
index 3e74986ff025819cf1ac838a6498b32d70978716..0c491334c30acd71aa966986e323cc1d4ea6d403 100644 (file)
--- a/runtime/rcu.c
+++ b/runtime/rcu.c
@@ -43,7 +43,7 @@ void rcu_thread_init (int id) {
     assert(id < MAX_NUM_THREADS);
     if (pending_[id] == NULL) {
         pending_[id] = fifo_alloc(RCU_QUEUE_SCALE);
-        SYNC_ADD(&num_threads_, 1);
+        (void)SYNC_ADD(&num_threads_, 1);
     }
 }