From 20e6e80cb1dd184c2ff1edb52a936534e0a57299 Mon Sep 17 00:00:00 2001
From: Eric Fischer <enf@pobox.com>
Date: Tue, 7 Nov 2017 11:38:38 -0800
Subject: [PATCH] Fix signed comparison warning from g++

---
 decode.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/decode.cpp b/decode.cpp
index d1fcffd..cbe7a7a 100644
--- a/decode.cpp
+++ b/decode.cpp
@@ -120,7 +120,7 @@ void handle(std::string message, int z, unsigned x, unsigned y, int describe, st
 		}
 
 		// X and Y are unsigned, so no need to check <0
-		if (x > (1 << z) || y > (1 << z)) {
+		if (x > (1ULL << z) || y > (1ULL << z)) {
 			fprintf(stderr, "Impossible tile %d/%u/%u\n", z, x, y);
 			exit(EXIT_FAILURE);
 		}