Check all arguments of the public API for NULL pointers.

[meshlink] / src / meshlink++.h

diff --git a/src/meshlink++.h b/src/meshlink++.h
index a357cca6516e24d96c0e13e23c7f570b6305b545..2729130cc64872f686a1fe6a4ce9bda60a564c9f 100644 (file)
--- a/src/meshlink++.h
+++ b/src/meshlink++.h
@@ -182,9 +182,10 @@ namespace meshlink {
                 *  @param nodes        A pointer to an array of pointers to meshlink::node, which should be allocated by the application.
                 *  @param nmemb        The maximum number of pointers that can be stored in the nodes array.
                 *
-                *  @return             The number of known nodes. This can be larger than nmemb, in which case not all nodes were stored in the nodes array.
+                *  @return             The number of known nodes, or -1 in case of an error.
+                *                      This can be larger than nmemb, in which case not all nodes were stored in the nodes array.
                 */
-               size_t get_all_nodes(node **nodes, size_t nmemb) {
+               ssize_t get_all_nodes(node **nodes, size_t nmemb) {
                        return meshlink_get_all_nodes(this, (meshlink_node_t **)nodes, nmemb);
                }