[Issue 22860] `Error: unknown` with mutually recursive and nested SumType

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22860

Iain Buclaw <ibuclaw at gdcproject.org> changed:

           What    |Removed                     |Added
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                 CC|                            |ibuclaw at gdcproject.org
          Component|phobos                      |dmd
           Hardware|x86_64                      |All
                 OS|Windows                     |All

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