[Issue 4042] Unable to instantiate a struct template.

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4042


Max Samukha <samukha at voliacable.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |samukha at voliacable.com


--- Comment #1 from Max Samukha <samukha at voliacable.com> 2010-04-03 05:01:52 PDT ---
A corrected and smaller test-case:

template isQObjectType(T)
{
    enum isQObjectType = is(T.__isQObjectType);
}

template QTypeInfo(T)
{
    static if (!isQObjectType!T)
    {       
        enum size = T.sizeof;
    }
}

struct QList(T)
{
    alias QTypeInfo!T TI;
    int x;

    void foo()
    {
        x++;
    }
}

void exec(QList!(QAction) actions) {}

interface IQGraphicsItem
{
}

abstract class QGraphicsObject : IQGraphicsItem
{
}

class QGraphicsWidget : QGraphicsObject
{
}

class QAction
{
    final void associatedGraphicsWidgets(QList!(QGraphicsWidget) a)
    {
        QList!(QGraphicsWidget) x;
    }
}

void main()
{
}
----

There may be more than one bug. Note that the static if body in QTypeInfo is
evaluated even though no __isQObjectType is defined in QGraphicsWidget or
QAction.

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