organicmaps/harfbuzz
13
Fork 0
mirror of https://github.com/harfbuzz/harfbuzz.git synced 2025-04-14 17:13:40 +00:00
Code Issues 1 Projects Releases Wiki Activity Actions

[fasthash] Try to fix unaligned access

Browse source
This commit is contained in:
Behdad Esfahbod 2023-05-09 02:06:37 -06:00
parent 075ecff750
commit da619c69c8
1 changed files with 4 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
src/hb-algs.hh
View file

@ -267,15 +267,16 @@ HB_FUNCOBJ (hb_bool);
static inline uint64_t fasthash64(const void *buf, size_t len, uint64_t seed)
{
struct __attribute__((packed)) packed_uint64_t { uint64_t v; };
const uint64_t m = 0x880355f21e6d1965ULL;
const uint64_t *pos = (const uint64_t *)buf;
const uint64_t *end = pos + (len / 8);
const packed_uint64_t *pos = (const packed_uint64_t *)buf;
const packed_uint64_t *end = pos + (len / 8);
const unsigned char *pos2;
uint64_t h = seed ^ (len * m);
uint64_t v;
while (pos != end) {
v = *pos++;
v = pos++->v;
h ^= mix(v);
h *= m;
}