[Issue 2409] New: property is not called

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=2409

           Summary: property is not called
           Product: D
           Version: 2.019
          Platform: PC
        OS/Version: Windows
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: terranium at yandex.ru


There is similar bug 2159. There property is called instead of taking
function's address. I encountered an opposite issue: property is not called and
compiler tries to apply operator to the property itself rather than to object
returned by the property. Seems like compiler desides on its own, when to call
property and when not. This is very confusing.

-----------------
alias void delegate(Object,void*) EventHandler;

class A
{
        MulticastDelegate ClickHandlers;
        MulticastDelegate Click()
        {
                return ClickHandlers;
        }
}

void fun()
{
        A a=new A();
        EventHandler hnd;
        a.Click+=hnd; //rejected should call MulticastDelegate.opAddAssign
        a.Click()+=hnd; //accepted
        a.ClickHandlers+=hnd; //works (field)
}

struct MulticastDelegate
{
        EventHandler opAddAssign(EventHandler hnd)
        {
                //...add handler to invocationList...
                return hnd;
        }
}
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