[Issue 18712] [Reg 2.072] bogus "switch skips declaration" error with case in mixin

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18712

--- Comment #8 from Rainer Schuetze <r.sagitario at gmx.de> ---
I think that the report should not be closed if it is actually undesired and
unexpected behavior, just because it cannot easily be fixed.

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