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Fix getKeysUsingCommandTable() in cluster mode.

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Close #3940.
This commit is contained in:
antirez 2017-04-19 16:17:08 +02:00
parent 189a12afb4
commit 7d9dd80db3
1 changed files with 14 additions and 1 deletions
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15
src/db.c
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@ -1133,11 +1133,24 @@ int *getKeysUsingCommandTable(struct redisCommand *cmd,robj **argv, int argc, in
*numkeys = 0;
return NULL;
}
last = cmd->lastkey;
if (last < 0) last = argc+last;
keys = zmalloc(sizeof(int)*((last - cmd->firstkey)+1));
for (j = cmd->firstkey; j <= last; j += cmd->keystep) {
serverAssert(j < argc);
if (j >= argc) {
/* Modules command do not have dispatch time arity checks, so
* we need to handle the case where the user passed an invalid
* number of arguments here. In this case we return no keys
* and expect the module command to report an arity error. */
if (cmd->flags & CMD_MODULE) {
zfree(keys);
*numkeys = 0;
return NULL;
} else {
serverPanic("Redis built-in command declared keys positions not matching the arity requirements.");
}
}
keys[i++] = j;
}
*numkeys = i;