Fix HLL corruption bug

680f89fb · John Sully · antirez · 388efbf8 · 680f89fb
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src/hyperloglog.c src/hyperloglog.c +1 -0

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--- a/src/hyperloglog.c
+++ b/src/hyperloglog.c
@@ -701,6 +701,7 @@ int hllSparseSet(robj *o, long index, uint8_t count) {
        first += span;
    }
    if (span == 0) return -1; /* Invalid format. */
+    if (span >= end) return -1; /* Invalid format. */

    next = HLL_SPARSE_IS_XZERO(p) ? p+2 : p+1;
    if (next >= end) next = NULL;