https://issues.dlang.org/show_bug.cgi?id=24730

          Issue ID: 24730
           Summary: Cannot initialize ref variable through `alias this`
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: maxsamukha@gmail.com

struct S {}
struct S2
{
    S s;
    alias this = s;
}

void main()
{
    S2 s2;
    ref S s = s2;
}

a.d(14): Error: type `S2` cannot be assigned to `ref S s`

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