From 2064a07feb8d7d1c0477a76c41dd12b4d49b7aff Mon Sep 17 00:00:00 2001
From: =?utf8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Fri, 27 Mar 2015 10:15:16 +0100
Subject: [PATCH] bus: Add guards against invalid arguments to set_flushing()
 and poll()

https://bugzilla.gnome.org/show_bug.cgi?id=746871
---
 gst/gstbus.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gst/gstbus.c b/gst/gstbus.c
index 7865079..fbe2464 100644
--- a/gst/gstbus.c
+++ b/gst/gstbus.c
@@ -448,6 +448,8 @@ gst_bus_set_flushing (GstBus * bus, gboolean flushing)
   GstMessage *message;
   GList *message_list = NULL;
 
+  g_return_if_fail (GST_IS_BUS (bus));
+
   GST_OBJECT_LOCK (bus);
 
   if (flushing) {
@@ -1122,6 +1124,8 @@ gst_bus_poll (GstBus * bus, GstMessageType events, GstClockTime timeout)
   GstMessage *ret;
   gulong id;
 
+  g_return_val_if_fail (GST_IS_BUS (bus), NULL);
+
   poll_data = g_slice_new (GstBusPollData);
   poll_data->source_running = TRUE;
   poll_data->loop = g_main_loop_new (NULL, FALSE);
-- 
2.7.4