[Issue 12143] New: Base class is forward referenced

[d-bugmail at puremagic.com]

https://d.puremagic.com/issues/show_bug.cgi?id=12143

           Summary: Base class is forward referenced
           Product: D
           Version: D2
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: samukha at voliacable.com


--- Comment #0 from Max Samukha <samukha at voliacable.com> 2014-02-12 11:57:08 PST ---
class Node
{
    alias typeof(true ? Node.init : Class.init) V;
}

class Type : Node
{
}

class Class : Type
{
}

void main()
{    
}

----

bug.d(10): Error: class bug.Class base class is forward referenced by Node
bug.d(10): Error: class bug.Class base class is forward referenced by Node
bug.d(10): Error: class bug.Class base class is forward referenced by Object
bug.d(10): Error: class bug.Class base class is forward referenced by Object
bug.d(3): Error: incompatible types for ((null) : (null)): 'bug.Node' and
'bug.Class'


This renders std.traits.CommonType unusable in certain situations.

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