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-rw-r--r--libdbusmenu-glib/client.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/libdbusmenu-glib/client.c b/libdbusmenu-glib/client.c
index 588c940..1ee8641 100644
--- a/libdbusmenu-glib/client.c
+++ b/libdbusmenu-glib/client.c
@@ -1604,7 +1604,11 @@ about_to_show_cb (GObject * proxy, GAsyncResult * res, gpointer userdata)
void
dbusmenu_client_send_about_to_show(DbusmenuClient * client, gint id, void (*cb)(gpointer data), gpointer cb_data)
{
+ g_return_if_fail(DBUSMENU_CLIENT(client));
+ g_return_if_fail(id > 0);
+
DbusmenuClientPrivate * priv = DBUSMENU_CLIENT_GET_PRIVATE(client);
+ g_return_if_fail(priv != NULL);
about_to_show_t * data = g_new0(about_to_show_t, 1);
data->client = client;