[Issue 20945] New: alias x = ref y compiles

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20945

          Issue ID: 20945
           Summary: alias x = ref y compiles
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: stanislav.blinov at gmail.com

alias refInt = ref int; // compiles
alias outInt = out int; // does not

Neither should.

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