gpssim: don't advertize uninitialized data

According to valgrind uninitialized bytes were being advertized.
PX4 · Jun 7, 2019 · d2c824c · d2c824c
1 parent 90bf26b
commit d2c824c
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/modules/simulator/gpssim/gpssim.cpp b/src/modules/simulator/gpssim/gpssim.cpp
@@ -268,11 +268,11 @@ GPSSIM::receive(int timeout)
 {
 	Simulator *sim = Simulator::getInstance();
 	simulator::RawGPSData gps;
-	sim->getGPSSample((uint8_t *)&gps, sizeof(gps));
 
 	static uint64_t timestamp_last = 0;
 
-	if (gps.timestamp != timestamp_last) {
+	if (sim->getGPSSample((uint8_t *)&gps, sizeof(gps)) &&
+	    (gps.timestamp != timestamp_last || timestamp_last == 0)) {
 		_report_gps_pos.timestamp = hrt_absolute_time();
 		_report_gps_pos.lat = gps.lat;
 		_report_gps_pos.lon = gps.lon;