From da60a82021a4e07d2d29b06d0989a72efa5ff718 Mon Sep 17 00:00:00 2001
From: tron <tron@openttd.org>
Date: Sat, 8 Apr 2006 13:32:38 +0000
Subject: [PATCH] (svn r4323) -Regression: Clear the slot assignments of all
 vehicles heading twoards a road stop if that road stop gets removed This
 issue was fixed in r2210 and reintroduced in r4259 when the multistop
 handling was overhauled.

---
 station_cmd.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/station_cmd.c b/station_cmd.c
index 7cdc82c04c..0a7c4724f0 100644
--- a/station_cmd.c
+++ b/station_cmd.c
@@ -1410,6 +1410,18 @@ static int32 RemoveRoadStop(Station *st, uint32 flags, TileIndex tile)
 	if (!EnsureNoVehicle(tile)) return CMD_ERROR;
 
 	if (flags & DC_EXEC) {
+		Vehicle* v;
+
+		/* Clear the slot assignment of all vehicles heading for this road stop */
+		if (cur_stop->num_vehicles != 0) {
+			FOR_ALL_VEHICLES(v) {
+				if (v->type == VEH_Road && v->u.road.slot == cur_stop) {
+					ClearSlot(v);
+				}
+			}
+		}
+		assert(cur_stop->num_vehicles == 0);
+
 		DoClearSquare(tile);
 
 		cur_stop->used = false;