(svn r10470) -Fix: clamp station build date to 16 bit value for newgrf, preventing overflow and incorrect graphics shown past a certain date.
--- a/src/newgrf_station.cpp Sat Jul 07 17:36:01 2007 +0000
+++ b/src/newgrf_station.cpp Sat Jul 07 20:17:01 2007 +0000
@@ -378,7 +378,7 @@
case 0x42: return 0; // Rail type (XXX Get current type from GUI?)
case 0x43: return _current_player; // Station owner
case 0x44: return 2; // PBS status
- case 0xFA: return max(_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0); // Build date
+ case 0xFA: return clamp(_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535); // Build date, clamped to a 16 bit value
}
*available = false;
@@ -420,7 +420,7 @@
case 0xF3: return st->bus_stops->status;
case 0xF6: return st->airport_flags;
case 0xF7: return GB(st->airport_flags, 8, 8);
- case 0xFA: return max(st->build_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0);
+ case 0xFA: return clamp(st->build_date - DAYS_TILL_ORIGINAL_BASE_YEAR, 0, 65535);
}
/* Handle cargo variables with parameter, 0x60 to 0x65 */