Index: src/station_func.h
===================================================================
--- src/station_func.h	(revision 14462)
+++ src/station_func.h	(working copy)
@@ -7,6 +7,7 @@
 
 #include "station_type.h"
 #include "sprite.h"
+#include "oldpool.h"
 #include "rail_type.h"
 #include "road_type.h"
 #include "tile_type.h"
@@ -17,7 +18,7 @@
 void ModifyStationRatingAround(TileIndex tile, Owner owner, int amount, uint radius);
 
 /** A set of stations (\c const \c Station* ) */
-typedef std::set<Station*> StationSet;
+typedef std::set<Station*, PoolItemIndexLess<Station> > StationSet;
 
 StationSet FindStationsAroundIndustryTile(TileIndex tile, int w, int h);
 
Index: src/oldpool.h
===================================================================
--- src/oldpool.h	(revision 14462)
+++ src/oldpool.h	(working copy)
@@ -155,6 +155,14 @@
 	}
 }
 
+/**
+ * Template providing a predicate to allow STL containers of
+ * pointers to pool items to be sorted by index.
+ */
+template <typename T>
+struct PoolItemIndexLess {
+	bool operator()(const T* a, const T* b) const { return a->index < b->index; }
+};
 
 /**
  * Generalization for all pool items that are saved in the savegame.