GPS: fix bad init when far from any airport

[flightgear.git] / src / Instrumentation / clock.cxx

diff --git a/src/Instrumentation/clock.cxx b/src/Instrumentation/clock.cxx
index 86343cb47ebf0775cd52194365f8db62c88a3de2..39f6f582f0b9ad566cb298aecd197da0f8470817 100644 (file)
--- a/src/Instrumentation/clock.cxx
+++ b/src/Instrumentation/clock.cxx
@@ -9,6 +9,8 @@
 #  include <config.h>
 #endif
 
+#include <cstdio>
+
 #include "clock.hxx"
 #include <simgear/timing/sg_time.hxx>
 #include <Main/fg_props.hxx>