Index: src/rail_cmd.cpp
===================================================================
--- src/rail_cmd.cpp    (revision 27688)
+++ src/rail_cmd.cpp    (working copy)
@@ -68,7 +68,9 @@
 
        uint i = 0;
        for (; i < lengthof(_original_railtypes); i++) _railtypes[i] = _original_railtypes[i];
-       for (; i < lengthof(_railtypes);          i++) _railtypes[i] = RailtypeInfo(); // zero-init
+
+       static const RailtypeInfo empty_railtype;
+       for (; i < lengthof(_railtypes);          i++) _railtypes[i] = empty_railtype;
 }
 
 void ResolveRailTypeGUISprites(RailtypeInfo *rti)




src/rail_cmd.cpp: In function ‘void ResetRailTypes()’:
src/rail_cmd.cpp:72:28: error: uninitialized const ‘empty_railtype’ [-fpermissive]
  static const RailtypeInfo empty_railtype;
                            ^
In file included from src/station_func.h:20:0,
                 from src/station_map.h:18,
                 from src/depot_map.h:15,
                 from src/depot_base.h:15,
                 from src/rail_cmd.cpp:16:
src/rail.h:116:7: note: ‘const class RailtypeInfo’ has no user-provided default constructor
 class RailtypeInfo {
       ^
src/rail.h:123:12: note: and the implicitly-defined constructor does not initialize ‘SpriteID RailtypeInfo::<anonymous struct>::track_y’
   SpriteID track_y;      ///< single piece of rail in Y direction, with ground
            ^
Makefile:234: recipe for target 'rail_cmd.o' failed