From: Bad-Command <Corey.Edmunds@gmail.com>
Date: Wed, 4 Jul 2012 19:06:19 +0000 (-0400)
Subject: Fix signed overflow in getPointedThing
X-Git-Url: http://81.2.79.47:8989/gitweb/?a=commitdiff_plain;h=cc10eec6c6fd6252450f7d3af098e3936e43d3d9;p=zefram%2Fminetest%2Fminetest_engine.git

Fix signed overflow in getPointedThing
---

diff --git a/src/game.cpp b/src/game.cpp
index e2e6dd8c..347dbf44 100644
--- 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++)