+-
+-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+-From: Ernestas Kulik <ekulik@redhat.com>
+-Date: Tue, 29 Jan 2019 09:50:46 +0100
+-Subject: [PATCH 10/10] gdbus: Avoid printing null strings
+-
+-This mostly affects the 2.56 branch, but, given that GCC 9 is being
+-stricter about passing null string pointers to printf-like functions, it
+-might make sense to proactively fix such calls.
+-
+-gdbusauth.c: In function '_g_dbus_auth_run_server':
+-gdbusauth.c:1302:11: error: '%s' directive argument is null
+-[-Werror=format-overflow=]
+- 1302 | debug_print ("SERVER: WaitingForBegin, read '%s'",
+- line);
+- |
+-
+-gdbusmessage.c: In function ‘g_dbus_message_to_blob’:
+-gdbusmessage.c:2730:30: error: ‘%s’ directive argument is null [-Werror=format-overflow=]
+- 2730 | tupled_signature_str = g_strdup_printf ("(%s)", signature_str);
+- |
+-
+-diff --git a/gio/gdbusauth.c b/gio/gdbusauth.c
+-index 1111111..2222222 100644
+---- a/gio/gdbusauth.c
+-+++ b/gio/gdbusauth.c
+-@@ -1295,9 +1295,9 @@ _g_dbus_auth_run_server (GDBusAuth *auth,
+- &line_length,
+- cancellable,
+- error);
+-- debug_print ("SERVER: WaitingForBegin, read '%s'", line);
+- if (line == NULL)
+- goto out;
+-+ debug_print ("SERVER: WaitingForBegin, read '%s'", line);
+- if (g_strcmp0 (line, "BEGIN") == 0)
+- {
+- /* YAY, done! */
+-diff --git a/gio/gdbusmessage.c b/gio/gdbusmessage.c
+-index 1111111..2222222 100644
+---- a/gio/gdbusmessage.c
+-+++ b/gio/gdbusmessage.c
+-@@ -2695,7 +2695,6 @@ g_dbus_message_to_blob (GDBusMessage *message,
+- if (message->body != NULL)
+- {
+- gchar *tupled_signature_str;
+-- tupled_signature_str = g_strdup_printf ("(%s)", signature_str);
+- if (signature == NULL)
+- {
+- g_set_error (error,
+-@@ -2703,10 +2702,10 @@ g_dbus_message_to_blob (GDBusMessage *message,
+- G_IO_ERROR_INVALID_ARGUMENT,
+- _("Message body has signature '%s' but there is no signature header"),
+- signature_str);
+-- g_free (tupled_signature_str);
+- goto out;
+- }
+-- else if (g_strcmp0 (tupled_signature_str, g_variant_get_type_string (message->body)) != 0)
+-+ tupled_signature_str = g_strdup_printf ("(%s)", signature_str);
+-+ if (g_strcmp0 (tupled_signature_str, g_variant_get_type_string (message->body)) != 0)
+- {
+- g_set_error (error,
+- G_IO_ERROR,