Limit scope of all global std::once_flag

src/rpc/server.cpp

@@ -22,8 +22,6 @@
 
 static RecursiveMutex cs_rpcWarmup;
 static std::atomic<bool> g_rpc_running{false};
-static std::once_flag g_rpc_interrupt_flag;
-static std::once_flag g_rpc_stop_flag;
 static bool fRPCInWarmup GUARDED_BY(cs_rpcWarmup) = true;
 static std::string rpcWarmupStatus GUARDED_BY(cs_rpcWarmup) = "RPC server started";
 /* Timer-creating functions */
@@ -295,6 +293,7 @@ void StartRPC()
 
 void InterruptRPC()
 {
+    static std::once_flag g_rpc_interrupt_flag;
     // This function could be called twice if the GUI has been started with -server=1.
     std::call_once(g_rpc_interrupt_flag, []() {
         LogPrint(BCLog::RPC, "Interrupting RPC\n");
@@ -305,6 +304,7 @@ void InterruptRPC()
 
 void StopRPC()
 {
+    static std::once_flag g_rpc_stop_flag;
     // This function could be called twice if the GUI has been started with -server=1.
     assert(!g_rpc_running);
     std::call_once(g_rpc_stop_flag, []() {

src/support/lockedpool.cpp

@@ -29,7 +29,6 @@
 #endif
 
 LockedPoolManager* LockedPoolManager::_instance = nullptr;
-std::once_flag LockedPoolManager::init_flag;
 
 /*******************************************************************************/
 // Utilities

src/support/lockedpool.h

@@ -221,7 +221,8 @@ public:
     /** Return the current instance, or create it once */
     static LockedPoolManager& Instance()
     {
-        std::call_once(LockedPoolManager::init_flag, LockedPoolManager::CreateInstance);
+        static std::once_flag init_flag;
+        std::call_once(init_flag, LockedPoolManager::CreateInstance);
         return *LockedPoolManager::_instance;
     }
 
@@ -234,7 +235,6 @@ private:
     static bool LockingFailed();
 
     static LockedPoolManager* _instance;
-    static std::once_flag init_flag;
 };
 
 #endif // BITCOIN_SUPPORT_LOCKEDPOOL_H