Fix signed overflow in getPointedThing

diff --git a/src/game.cpp b/src/game.cpp
index e2e6dd8c1774df7eec004603ae68b5a6e18feab7..347dbf44b163d2eb242cb7519791dbe6a050894e 100644 (file)
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -367,6 +367,14 @@ PointedThing getPointedThing(Client *client, v3f player_position,
        s16 zend = pos_i.Z + (camera_direction.Z>0 ? a : 1);
        s16 xend = pos_i.X + (camera_direction.X>0 ? a : 1);
        
+       // Prevent signed number overflow
+       if(yend==32767)
+               yend=32766;
+       if(zend==32767)
+               zend=32766;
+       if(xend==32767)
+               xend=32766;
+
        for(s16 y = ystart; y <= yend; y++)
        for(s16 z = zstart; z <= zend; z++)
        for(s16 x = xstart; x <= xend; x++)