libhashkit: fix UB on unaligned access

[awesomized/libmemcached] / libhashkit / murmur.cc

diff --git a/libhashkit/murmur.cc b/libhashkit/murmur.cc
index 3bdacf0e4e8a2e3371af9af3f28fd4ff1ca72b4b..f3e8fe6ac7eebcca2d92d72e69d19e249aed2934 100644 (file)
--- a/libhashkit/murmur.cc
+++ b/libhashkit/murmur.cc
@@ -56,6 +56,8 @@
 
 #ifdef HAVE_MURMUR_HASH
 
+#include <cstring>
+
 uint32_t hashkit_murmur(const char *key, size_t length, void *context)
 {
   /*
@@ -79,7 +81,8 @@ uint32_t hashkit_murmur(const char *key, size_t length, void *context)
 
   while(length >= 4)
   {
-    unsigned int k = *(unsigned int *)data;
+    unsigned int k;
+    memcpy(&k, data, sizeof(unsigned int));
 
     k *= m;
     k ^= k >> r;