[Issue 7945] New: alias this doesn't work on function ref parameter

[d-bugmail]

http://d.puremagic.com/issues/show_bug.cgi?id=7945

           Summary: alias this doesn't work on function ref parameter
           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> 2012-04-19 06:36:22 PDT ---
The four calls should work, but #1 doesn't work.

struct S
{
    int v;
    alias v this;
}
void foo(ref int n){}

void main()
{
    auto s = S(1);
    // variable s is lvalue, so
    // alias this expanded expression s.v is also lvalue and matches to ref.

    foo(s);         // 1.NG -> OK
    s.foo();        // 2.OK, ufcs
    foo(s.v);       // 3.OK
    s.v.foo();      // 4.OK, ufcs
}

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