From 1aea522ef59c43ee93f15f88efc3fd221f869029 Mon Sep 17 00:00:00 2001
From: Eric Fischer <enf@pobox.com>
Date: Fri, 7 Nov 2014 12:51:26 -0800
Subject: [PATCH] Fix another overflow that broke line clipping at zoom level
 1.

---
 geometry.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/geometry.cc b/geometry.cc
index 5425d947..daecdceb 100644
--- a/geometry.cc
+++ b/geometry.cc
@@ -398,7 +398,7 @@ drawvec clip_lines(drawvec &geom, int z, int detail, long long buffer) {
 			long long min = 0;
 			long long area = 0xFFFFFFFF;
 			if (z != 0) {
-				area = 1 << (32 - z);
+				area = 1LL << (32 - z);
 
 				min -= buffer * area / 256;
 				area += buffer * area / 256;