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HyperLogLog: handle wrong offset in the base case.

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antirez
2019-03-18 11:25:57 +01:00
parent 623afd5e4b
commit ef1833b3f9
1 changed files with 2 additions and 6 deletions
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src/hyperloglog.c
+2 -6
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@@ -614,10 +614,7 @@ int hllSparseToDense(robj *o) {
} else {
runlen = HLL_SPARSE_VAL_LEN(p);
regval = HLL_SPARSE_VAL_VALUE(p);
if ((runlen + idx) > HLL_REGISTERS) {
sdsfree(dense);
return C_ERR;
}
if ((runlen + idx) > HLL_REGISTERS) break; /* Overflow. */
while(runlen--) {
HLL_DENSE_SET_REGISTER(hdr->registers,idx,regval);
idx++;
@@ -1097,8 +1094,7 @@ int hllMerge(uint8_t *max, robj *hll) {
} else {
runlen = HLL_SPARSE_VAL_LEN(p);
regval = HLL_SPARSE_VAL_VALUE(p);
if ((runlen + i) > HLL_REGISTERS)
return C_ERR;
if ((runlen + i) > HLL_REGISTERS) break; /* Overflow. */
while(runlen--) {
if (regval > max[i]) max[i] = regval;
i++;