diff -r 0ac4aa1737fd -r 6e0c3a8a914a tests/test_tree.c
--- a/tests/test_tree.c	Fri Oct 17 15:04:56 2025 +0200
+++ b/tests/test_tree.c	Fri Oct 17 16:53:24 2025 +0200
@@ -657,7 +657,7 @@
         CX_TEST_ASSERT(!iter.exiting);
         CX_TEST_ASSERT(iter.counter == 1);
         CX_TEST_ASSERT(iter.node == &root);
-        CX_TEST_ASSERT(!iter.base.mutating);
+        CX_TEST_ASSERT(!iter.base.allow_remove);
         CX_TEST_ASSERT(!iter.base.remove);
         CX_TEST_ASSERT(iter.stack != NULL);
         CX_TEST_ASSERT(iter.stack_capacity > 0);
@@ -677,7 +677,7 @@
         CX_TEST_ASSERT(!iter.exiting);
         CX_TEST_ASSERT(iter.counter == 0);
         CX_TEST_ASSERT(iter.node == NULL);
-        CX_TEST_ASSERT(!iter.base.mutating);
+        CX_TEST_ASSERT(!iter.base.allow_remove);
         CX_TEST_ASSERT(!iter.base.remove);
         CX_TEST_ASSERT(iter.stack == NULL);
         CX_TEST_ASSERT(iter.stack_capacity == 0);
@@ -1017,7 +1017,7 @@
         CxTreeVisitor iter = cx_tree_visitor(&root, tree_children(tree_node));
         CX_TEST_ASSERT(iter.counter == 1);
         CX_TEST_ASSERT(iter.node == &root);
-        CX_TEST_ASSERT(!iter.base.mutating);
+        CX_TEST_ASSERT(!iter.base.allow_remove);
         CX_TEST_ASSERT(!iter.base.remove);
         CX_TEST_ASSERT(iter.queue_next != NULL);
         CX_TEST_ASSERT(iter.queue_last != NULL);
@@ -1559,7 +1559,7 @@
         CX_TEST_ASSERT(processed == 0);
         CX_TEST_ASSERT(talloc.alloc_total == 0);
 
-        CxIterator iter = cxIterator(NULL, sizeof(void *), 0);
+        CxIterator iter = cxIterator(NULL, sizeof(void *), 0, false);
         processed = cx_tree_add_iter(
                 cxIteratorRef(iter),
                 10, // deliberately specify more than the iter has
@@ -1669,7 +1669,7 @@
                 "/usr/lib/foo.so"
         };
         // create iterator for 4 elements, but choose to insert only 3 of them
-        CxIterator iter = cxIterator(paths, sizeof(const char*), 4);
+        CxIterator iter = cxIterator(paths, sizeof(const char*), 4, false);
         size_t processed = cx_tree_add_iter(
                 cxIteratorRef(iter), 3,
                 tree_node_file_search,