Fix terrasync parsing of atlas messages

diff --git a/utils/TerraSync/terrasync.cxx b/utils/TerraSync/terrasync.cxx
index 53520822a60aea9f7ae9952114b89c01b3e6761a..e0f867ebf0485942613a5a92aacf11a6e2bb2df3 100644 (file)
--- a/utils/TerraSync/terrasync.cxx
+++ b/utils/TerraSync/terrasync.cxx
@@ -243,8 +243,14 @@ static void parse_message( const string &msg, int *lat, int *lon ) {
 
     // find GGA string and advance to start of lat
     string::size_type pos = text.find( "$GPGGA" );
+    if ( pos == string::npos )
+    {
+       *lat = -9999.0;
+       *lon = -9999.0;
+       return;
+    }
     string tmp = text.substr( pos + 7 );
-    pos = text.find( "," );
+    pos = tmp.find( "," );
     tmp = tmp.substr( pos + 1 );
     // cout << "-> " << tmp << endl;