Function gobject_sys::g_cclosure_marshal_VOID__CHAR

pub unsafe extern fn g_cclosure_marshal_VOID__CHAR(closure: *mut GClosure,
                                                   return_value: *mut GValue,
                                                   n_param_values: c_uint,
                                                   param_values: *const GValue,
                                                   invocation_hint: gpointer,
                                                   marshal_data: gpointer)