diff options
| -rw-r--r-- | src/bitops.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/src/bitops.c b/src/bitops.c index 5550b60d1..5e996679b 100644 --- a/src/bitops.c +++ b/src/bitops.c @@ -735,12 +735,23 @@ void bitopCommand(client *c) { output = (len[0] <= j) ? 0 : src[0][j]; if (op == BITOP_NOT) output = ~output; for (i = 1; i < numkeys; i++) { + int skip = 0; byte = (len[i] <= j) ? 0 : src[i][j]; switch(op) { - case BITOP_AND: output &= byte; break; - case BITOP_OR: output |= byte; break; + case BITOP_AND: + output &= byte; + skip = (output == 0); + break; + case BITOP_OR: + output |= byte; + skip = (output == 0xff); + break; case BITOP_XOR: output ^= byte; break; } + + if (skip) { + break; + } } res[j] = output; } |