static void unload_one_branch(void)
{
	while (cur_active_branches
		&& cur_active_branches >= max_active_branches) {
		uintmax_t min_commit = ULONG_MAX;
		struct branch *e, *l = NULL, *p = NULL;

		for (e = active_branches; e; e = e->active_next_branch) {
			if (e->last_commit < min_commit) {
				p = l;
				min_commit = e->last_commit;
			}
			l = e;
		}

		if (p) {
			e = p->active_next_branch;
			p->active_next_branch = e->active_next_branch;
		} else {
			e = active_branches;
			active_branches = e->active_next_branch;
		}
		e->active = 0;
		e->active_next_branch = NULL;
		if (e->branch_tree.tree) {
			release_tree_content_recursive(e->branch_tree.tree);
			e->branch_tree.tree = NULL;
		}
		cur_active_branches--;
	}
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.