diff options
Diffstat (limited to 'myisam/mi_unique.c')
| -rw-r--r-- | myisam/mi_unique.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/myisam/mi_unique.c b/myisam/mi_unique.c index 38b4ed93311..ad685f4cbdc 100644 --- a/myisam/mi_unique.c +++ b/myisam/mi_unique.c @@ -69,7 +69,8 @@ my_bool mi_check_unique(MI_INFO *info, MI_UNIQUEDEF *def, byte *record, ha_checksum mi_unique_hash(MI_UNIQUEDEF *def, const byte *record) { const byte *pos, *end; - ha_checksum crc=0; + ha_checksum crc= 0; + ulong seed1=0, seed2= 4; HA_KEYSEG *keyseg; for (keyseg=def->seg ; keyseg < def->end ; keyseg++) @@ -108,9 +109,10 @@ ha_checksum mi_unique_hash(MI_UNIQUEDEF *def, const byte *record) end= pos+length; if (type == HA_KEYTYPE_TEXT || type == HA_KEYTYPE_VARTEXT) { - ulong nr=1, nr2=4; - keyseg->charset->coll->hash_sort(keyseg->charset,(const uchar*)pos,length,&nr, &nr2); - crc=nr; + keyseg->charset->coll->hash_sort(keyseg->charset, + (const uchar*) pos, length, &seed1, + &seed2); + crc^= seed1; } else while (pos != end) |