On Sun, May 18, 2025 at 11:57:07PM +0800, shejialuo wrote: > In "add_entry", we accept "insert_at" parameter which must be either -1 > (auto) or between 0 and `list->nr` inclusive. Any other value is > invalid. When caller specify any invalid "insert_at" value, we won't > check the range and move the element, which would definitely cause the > trouble. Maybe "which may easily cause an out-of-bounds write" instead of vague "trouble"? > However, we only use "add_entry" in "string_list_insert" function and we > always pass the "-1" for "insert_at" parameter. So, we never use this > parameter to insert element in a user specified position. Let's delete > this parameter. If there is any requirement later, we need to use a > better way to do this. Makes sense. Patrick