fixup! fix: align output merkle tree depth with solidity

cartesi · Apr 12, 2024 · f5bb6a3 · f5bb6a3
1 parent 2f9c3d6
commit f5bb6a3
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/sys-utils/libcmt/src/merkle.c b/sys-utils/libcmt/src/merkle.c
@@ -164,7 +164,9 @@ uint64_t cmt_merkle_get_leaf_count(cmt_merkle_t *me) {
 }
 
 int cmt_merkle_push_back(cmt_merkle_t *me, const uint8_t hash[CMT_KECCAK_LENGTH]) {
-    if (me->leaf_count == UINT64_MAX) {
+    const uint64_t max_count = (CMT_MERKLE_TREE_HEIGHT < 8*sizeof(uint64_t))?
+        (UINT64_C(1) << CMT_MERKLE_TREE_HEIGHT): UINT64_MAX;
+    if (me->leaf_count == max_count) {
         return -ENOBUFS;
     }
     uint8_t right[CMT_KECCAK_LENGTH];