Whoops, chess-scene is not part of the convenience library, so that has
nothing to do with this issue. Totally wrong about that, sorry.
On Wed, 2016-01-27 at 08:39 +0100, Florian Weimer wrote:
It seems that g_cclosure_user_marshal_ENUM__VOID invokes the
callback
with an int return value, but the registered callback
(_chess_application_show_promotion_type_selector_chess_scene_choose_p
romotion_type)
has a return type of PieceType *.
Thank you Florian! I will move the upstream bug report to Vala. The
signal declaration in Vala is:
public signal PieceType? choose_promotion_type ();
I guess Vala got confused by the nullability of the return value. It
needs to use a different marshaller, or pass NULL to allow GLib to pick
the best marshaller.
https://bugzilla.gnome.org/show_bug.cgi?id=758816
Michael