From: Anders Björklund <anders@psqr.se>
Date: Sun, 13 Nov 2016 15:51:46 +0000 (+0100)
Subject: Undefined: avoid shift warning in murmurhash
X-Git-Tag: v3.3.4~4
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f1ac8e7dd2f818a6d29d5f38e944cac93288ee80;p=thirdparty%2Fccache.git

Undefined: avoid shift warning in murmurhash

murmurhashneutral2.c:18:16: runtime error: left shift of 169 by 24 places cannot be represented in type 'int'
---

diff --git a/murmurhashneutral2.c b/murmurhashneutral2.c
index b568af657..53319dfb6 100644
--- a/murmurhashneutral2.c
+++ b/murmurhashneutral2.c
@@ -13,9 +13,9 @@ murmurhashneutral2(const void *key, int len, unsigned int seed)
 
 	while (len >= 4) {
 		unsigned int k = data[0];
-		k |= data[1] << 8;
-		k |= data[2] << 16;
-		k |= data[3] << 24;
+		k |= ((unsigned int) data[1]) << 8;
+		k |= ((unsigned int) data[2]) << 16;
+		k |= ((unsigned int) data[3]) << 24;
 
 		k *= m;
 		k ^= k >> r;
@@ -30,9 +30,9 @@ murmurhashneutral2(const void *key, int len, unsigned int seed)
 
 	switch (len)
 	{
-	case 3: h ^= data[2] << 16;
-	case 2: h ^= data[1] << 8;
-	case 1: h ^= data[0];
+	case 3: h ^= ((unsigned int) data[2]) << 16;
+	case 2: h ^= ((unsigned int) data[1]) << 8;
+	case 1: h ^= ((unsigned int) data[0]);
 		h *= m;
 	};