https://sourceforge.net/p/speed-dreams/tickets/952/
https://bugs.gentoo.org/580054

--- a/src/modules/simu/simuv2/simu.cpp
+++ b/src/modules/simu/simuv2/simu.cpp
@@ -61,7 +61,7 @@
     if (isnan(car->ctrl->brakeCmd) || isinf(car->ctrl->brakeCmd)) car->ctrl->brakeCmd = 0;
     if (isnan(car->ctrl->clutchCmd) || isinf(car->ctrl->clutchCmd)) car->ctrl->clutchCmd = 0;
     if (isnan(car->ctrl->steer) || isinf(car->ctrl->steer)) car->ctrl->steer = 0;
-    if (isnan(car->ctrl->gear) || isinf(car->ctrl->gear)) car->ctrl->gear = 0;
+    if (isnan((float)car->ctrl->gear) || isinf((float)car->ctrl->gear)) car->ctrl->gear = 0;
 #else
     if (isnan(car->ctrl->accelCmd)) car->ctrl->accelCmd = 0;
     if (isnan(car->ctrl->brakeCmd)) car->ctrl->brakeCmd = 0;
--- a/src/modules/simu/simuv3/simu.cpp
+++ b/src/modules/simu/simuv3/simu.cpp
@@ -61,7 +61,7 @@
     if (isnan(car->ctrl->brakeCmd) || isinf(car->ctrl->brakeCmd)) car->ctrl->brakeCmd = 0;
     if (isnan(car->ctrl->clutchCmd) || isinf(car->ctrl->clutchCmd)) car->ctrl->clutchCmd = 0;
     if (isnan(car->ctrl->steer) || isinf(car->ctrl->steer)) car->ctrl->steer = 0;
-    if (isnan(car->ctrl->gear) || isinf(car->ctrl->gear)) car->ctrl->gear = 0;
+    if (isnan((float)car->ctrl->gear) || isinf((float)car->ctrl->gear)) car->ctrl->gear = 0;
 #else
     if (isnan(car->ctrl->accelCmd)) car->ctrl->accelCmd = 0;
     if (isnan(car->ctrl->brakeCmd)) car->ctrl->brakeCmd = 0;