python: Add a regression test for RHBZ#811650.

python/t/rhbz811650.py

@@ -0,0 +1,29 @@
+# libguestfs Python bindings
+# Copyright (C) 2012 Red Hat Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import guestfs
+
+g = guestfs.GuestFS ()
+
+g.add_drive_opts ("/dev/null", format="qcow2");
+
+# Because error() wasn't being called, guestfs_last_error would return
+# NULL, causing a segfault in the Python bindings (RHBZ#811650).
+try:
+    g.launch ()
+except:
+    pass