[Issue 20216] Switch case fall-through not detected for multiple case arguments

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20216

uplink.coder at googlemail.com changed:

           What    |Removed                     |Added
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                 CC|                            |uplink.coder at googlemail.com
           Assignee|nobody at puremagic.com        |uplink.coder at googlemail.com

--- Comment #3 from uplink.coder at googlemail.com ---
This happens because multi cases get nested.

To see it add -vcg-ast.
I'll see if I can fix it.

However from reading the compiler source it seems intended....

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