From 320233fc9bbb4926e57dce1be7536fdaf7173306 Mon Sep 17 00:00:00 2001
From: Jonathan G Rennison <j.g.rennison@gmail.com>
Date: Thu, 10 Mar 2016 00:03:40 +0000
Subject: [PATCH] Fix VehiclePositionIsAllowed triggering assertions on virtual
 trains.

This fixes the bug where a bankruptcy/company reset when another
company owned a virtual train caused an assertion failure.
---
 src/infrastructure.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/infrastructure.cpp b/src/infrastructure.cpp
index 4ed337cd89..e05dffbcad 100644
--- a/src/infrastructure.cpp
+++ b/src/infrastructure.cpp
@@ -98,8 +98,10 @@ void PayDailyTrackSharingFee(Train *v)
  */
 static bool VehiclePositionIsAllowed(const Vehicle *v, Owner owner = INVALID_OWNER)
 {
+	if (!IsValidTile(v->tile)) return true;
 	switch (v->type) {
 		case VEH_TRAIN:
+			if (HasBit(Train::From(v)->subtype, GVSF_VIRTUAL)) return true;
 			for (const Vehicle *u = v; u != NULL; u = u->Next()) {
 				if (!IsInfraTileUsageAllowed(VEH_TRAIN, v->owner, u->tile) || GetTileOwner(u->tile) == owner) return false;
 			}