ext/h3/src/src/h3lib/lib/h3Index.c in h3-3.6.0 vs ext/h3/src/src/h3lib/lib/h3Index.c in h3-3.6.1

@@ -264,9 +264,12 @@
  * contiguous regions exist in the set at all and no compression possible)
  * @return an error code on bad input data
  */
 int H3_EXPORT(compact)(const H3Index* h3Set, H3Index* compactedSet,
                        const int numHexes) {
+    if (numHexes == 0) {
+        return 0;
+    }
     int res = H3_GET_RESOLUTION(h3Set[0]);
     if (res == 0) {
         // No compaction possible, just copy the set to output
         for (int i = 0; i < numHexes; i++) {
             compactedSet[i] = h3Set[i];