[Issue 6837] New: alias this + UFCS = fail

[d-bugmail]

http://d.puremagic.com/issues/show_bug.cgi?id=6837

           Summary: alias this + UFCS = fail
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nob...@puremagic.com
        ReportedBy: k.hara...@gmail.com


--- Comment #0 from Kenji Hara <k.hara...@gmail.com> 2011-10-21 07:30:55 PDT ---
struct Ref1(T)
{
    T storage;
    alias storage this;
}

struct Ref2(T)
{
    T storage;
    @property ref T get(){ return storage; }
    alias get this;
}

int front(int[] arr){ return arr[0]; }

void popFront(ref int[] arr){ arr = arr[1..$]; }

void main()
{
    assert([1,2,3].front == 1);

    auto r1 = Ref1!(int[])([1,2,3]);
//  assert(r1.front() == 1);    // ng
    assert(r1.front == 1);      // ok
//  r1.popFront();              // ng
    r1.storage.popFront();      // ok

    auto r2 = Ref2!(int[])([1,2,3]);
//  assert(r2.front() == 1);    // ng
    assert(r2.front == 1);      // ok
//  r2.popFront();              // ng
//  r2.get.popFront();          // ng
    r2.get().popFront();        // ok
}

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