Fix undefined behaviour when left-shifting negative values by casting to unsigned

This silences warning spam from UndefinedBehaviorSanitizer.
2018-06-06 18:25:45 +01:00
parent 6573a67b69
commit e1fb35b16f
4 changed files with 7 additions and 5 deletions
--- a/src/tree_map.h
+++ b/src/tree_map.h
@@ -166,7 +166,7 @@ static inline uint GetTreeCount(TileIndex t)
 static inline void AddTreeCount(TileIndex t, int c)
 {
 	assert(IsTileType(t, MP_TREES)); // XXX incomplete
-	_m[t].m5 += c << 6;
+	_m[t].m5 += ((uint) c) << 6;
 }

 /**