lib: hash - Add assert to make sure hash table doesn't grow beyond UINT_MAX nodes

hash_table_count() returns unsigned int, so the node count can't be larger.
It's internally also tracked as unsigned int currently. It should be large
enough for all practical use cases.

diff --git a/src/lib/hash.c b/src/lib/hash.c
index 76d51baaaabda335596e8199da603f95e48758c0..16f3c967238a148eadecf70f96a71d89b21ea63a 100644 (file)
--- a/src/lib/hash.c
+++ b/src/lib/hash.c
@@ -219,6 +219,7 @@ hash_table_insert_node(struct hash_table *table, void *key, void *value,
        unsigned int hash;
        bool check_existing = TRUE;
 
+       i_assert(table->nodes_count < UINT_MAX);
        i_assert(key != NULL);
 
        if(opcode == HASH_TABLE_OP_RESIZE)