Fix: ctf: uninitialized packet_index, misuse of index

[babeltrace.git] / formats / ctf / ctf.c

diff --git a/formats/ctf/ctf.c b/formats/ctf/ctf.c
index 515bbe1a2c256aea19efefc3c1af9bfe35ac82d9..141f9bfae0c7c7dd040471d74c725fc97a622bc0 100644 (file)
--- a/formats/ctf/ctf.c
+++ b/formats/ctf/ctf.c
@@ -887,9 +887,12 @@ void ctf_packet_seek(struct bt_stream_pos *stream_pos, size_t index, int whence)
                                return;
                        }
                        assert(pos->cur_index < pos->packet_index->len);
-                       if (index > 0) {
+                       packet_index = &g_array_index(pos->packet_index,
+                                       struct packet_index, pos->cur_index);
+                       if (pos->cur_index > 0) {
                                prev_index = &g_array_index(pos->packet_index,
-                                               struct packet_index, index - 1);
+                                               struct packet_index,
+                                               pos->cur_index - 1);
                        }
                        ctf_update_current_packet_index(&file_stream->parent,
                                        prev_index, packet_index);