abandon infinite loop in report_nextseg sooner

diff --git a/hostside/safety.c b/hostside/safety.c
index bdcdbfe35c7c6c0c4385e5b7ab6b061c72640821..bea01b3e61e40353dddf16bd4696c73ebe50a19d 100644 (file)
--- a/hostside/safety.c
+++ b/hostside/safety.c
@@ -1014,8 +1014,14 @@ static int report_nextseg(TrackLocation *t, struct TrackAdvanceContext *c,
   char flags[6];
   int r;
 
+  u->lookahead++;
+  if (u->lookahead > (int)(NUM_SEGMENTS * 1.5)) {
+    ouprintf(" [... infinite loop!]\n");
+    abort();
+  }
+
   if (u->done_fdet) /* we've had foredetect */
-    if (++u->lookahead > u->train->plan_lookahead_nsegs)
+    if (u->lookahead > u->train->plan_lookahead_nsegs)
       return -1;
 
   flags[0]= 0;