diff options
Diffstat (limited to 'src/backend/utils/hash/hashfn.c')
| -rw-r--r-- | src/backend/utils/hash/hashfn.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/backend/utils/hash/hashfn.c b/src/backend/utils/hash/hashfn.c index ed0826e8e51..af528881eff 100644 --- a/src/backend/utils/hash/hashfn.c +++ b/src/backend/utils/hash/hashfn.c @@ -9,7 +9,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/utils/hash/hashfn.c,v 1.27 2006/07/14 14:52:25 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/utils/hash/hashfn.c,v 1.28 2006/09/27 18:40:09 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -27,8 +27,16 @@ uint32 string_hash(const void *key, Size keysize) { + /* + * If the string exceeds keysize-1 bytes, we want to hash only that many, + * because when it is copied into the hash table it will be truncated at + * that length. + */ + Size s_len = strlen((const char *) key); + + s_len = Min(s_len, keysize-1); return DatumGetUInt32(hash_any((const unsigned char *) key, - (int) strlen((const char *) key))); + (int) s_len)); } /* |