Fix: lib/graph: Dereference before null checks

[babeltrace.git] / lib / graph / graph.c

diff --git a/lib/graph/graph.c b/lib/graph/graph.c
index b43c35c6504268bd7739e3aeebde8d1945278829..2940355faf897ccbbb691a1e77be6ee46133f9dc 100644 (file)
--- a/lib/graph/graph.c
+++ b/lib/graph/graph.c
@@ -82,6 +82,9 @@ struct bt_graph_listener_ports_connected {
        do {                                                            \
                size_t i;                                               \
                                                                        \
+               if (!_listeners) {                                      \
+                       break;                                          \
+               }                                                       \
                for (i = 0; i < (_listeners)->len; i++) {               \
                        _type *listener =                               \
                                &g_array_index((_listeners), _type, i); \