From: Ian Jackson <ian@liberator.relativity.greenend.org.uk>
Date: Fri, 7 Jan 2011 01:51:10 +0000 (+0000)
Subject: hostside/gui-plan: do not crash on the first "movepos Z0 position ? moving" (untested)
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ijackson/git?a=commitdiff_plain;h=3852fe990c1fe670298c6655570614adbb6e2389;p=trains.git

hostside/gui-plan: do not crash on the first "movepos Z0 position ? moving" (untested)
---

diff --git a/hostside/gui-plan.c b/hostside/gui-plan.c
index 67e08a1..18fa08b 100644
--- a/hostside/gui-plan.c
+++ b/hostside/gui-plan.c
@@ -617,8 +617,10 @@ static void si_movpos(ParseState *ps) {
   r= ps_needword(ps);                                    if (r) return;
   if (!thiswordstrcmp(ps,"?")) {
     int f;
-    for (f=0; f < ui_plan_data.segments[s].n_movfeats; f++)
-      state[s].mfs[f].posn= ui_plan_data.segments[s].movfeats[f].n_posns;
+    for (f=0; f < ui_plan_data.segments[s].n_movfeats; f++) {
+      int n_posns= ui_plan_data.segments[s].movfeats[f].n_posns;
+      if (n_posns > 1) state[s].mfs[f].posn= n_posns;
+    }
     mx_redraw_seg(s);
     return;
   }