[email protected] writes:
> On Jan 5, 2012, at 7:51 AM, David Kastrup wrote:
>
>> Grob::get_vertical_axis_group is not protected against the case where g
>> has an axis group interface but no Y_AXIs parent.
>
> I thought it was. If g has no Y_AXIS parent, then when
> get_vertical_axis_group (g->get_parent (Y_AXIS)); is called, the first
> test if (!g) will return 0, no?
Grob::get_vertical_axis_group (Grob *g)
{
if (!g)
return 0;
if (Axis_group_interface::has_interface (g)
&& Align_interface::has_interface (g->get_parent (Y_AXIS)))
return g;
return get_vertical_axis_group (g->get_parent (Y_AXIS));
}
You call Align_interface::has_interface (g->get_parent (Y_AXIS)) here
before you call get_vertical_axis_group.
--
David Kastrup
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