From 33d4100ea0740acbd5002d340c1eba268f55ed94 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E2=96=9F=20=E2=96=96=E2=96=9F=20=E2=96=96?=
 <dodo.the.last@gmail.com>
Date: Thu, 2 Apr 2015 01:10:16 +0200
Subject: [PATCH] prevent segfault when dbus signal creation failed

---
 dbus.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dbus.c b/dbus.c
index 7f5527382..569160311 100644
--- a/dbus.c
+++ b/dbus.c
@@ -819,6 +819,10 @@ luaA_dbus_emit_signal(lua_State *L)
     const char *name = luaL_checkstring(L, 4);
     DBusConnection *dbus_connection = a_dbus_bus_getbyname(bus_name);
     DBusMessage* msg = dbus_message_new_signal(path, itface, name);
+    if (msg == NULL) {
+        luaA_warn(L, "your D-Bus signal emitting method error'd");
+        return 0;
+    }
 
     DBusMessageIter iter;
     dbus_message_iter_init_append(msg, &iter);