Comment 2 for bug 863773

StacktraceTop:
 __memcpy_ssse3 () at ../sysdeps/x86_64/multiarch/memcpy-ssse3.S:1816
 _pygi_marshal_from_py_array (state=0x7fff669c63d0, callable_cache=0x7f735dc9ecc0, arg_cache=0x7f735d87de60, py_arg=[<Atom at remote 0x5b05730>, <Atom at remote 0x5b05940>, <Atom at remote 0x5b05520>, <Atom at remote 0x5b05050>, <Atom at remote 0x5b05b50>, <Atom at remote 0x5b05ec0>, <Atom at remote 0x5b05310>, <Atom at remote 0x5b03310>], arg=0x7f7351a20e80) at /usr/include/x86_64-linux-gnu/bits/string3.h:52
 _invoke_marshal_in_args (cache=0x7f735dc9ecc0, state=0x7fff669c63d0) at /build/buildd/pygobject-3.0.0/gi/pygi-invoke.c:483
 _wrap_g_callable_info_invoke (self=0x669ae18, py_args=<optimized out>, kwargs=<optimized out>) at /build/buildd/pygobject-3.0.0/gi/pygi-invoke.c:620
 ext_do_call (nk=0, na=<optimized out>, flags=<optimized out>, pp_stack=0x7fff669c6560, func=<built-in method invoke of gi.FunctionInfo object at remote 0x669ae18>) at ../Python/ceval.c:4331