clang reports:
src/libudev/libudev-util.c:665:35: warning: cast from
"const unsigned char *" to "unsigned int *" increases required alignment
from 1 to 4 [-Wcast-align]
* Murmurhash is under the MIT license.
*
*/
* Murmurhash is under the MIT license.
*
*/
-static unsigned int murmur_hash2(const char *key, int len, unsigned int seed)
+static unsigned int murmur_hash2(const char *key, size_t len, unsigned int seed)
{
/*
* 'm' and 'r' are mixing constants generated offline.
{
/*
* 'm' and 'r' are mixing constants generated offline.
/* mix 4 bytes at a time into the hash */
const unsigned char * data = (const unsigned char *)key;
/* mix 4 bytes at a time into the hash */
const unsigned char * data = (const unsigned char *)key;
- while(len >= 4) {
- unsigned int k = *(unsigned int *)data;
+ while(len >= sizeof(unsigned int)) {
+ unsigned int k;
+ memcpy(&k, data, sizeof(k));
k *= m;
k ^= k >> r;
k *= m;
h *= m;
h ^= k;
k *= m;
k ^= k >> r;
k *= m;
h *= m;
h ^= k;
+ data += sizeof(k);
+ len -= sizeof(k);
}
/* handle the last few bytes of the input array */
}
/* handle the last few bytes of the input array */