[Issue 18955] extern(C++) default struct mangling is overridden when interacting with a `cppmangle = class` tamplate

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18955

Manu <turkeyman at gmail.com> changed:

           What    |Removed                     |Added
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           Keywords|                            |C++, industry

--- Comment #1 from Manu <turkeyman at gmail.com> ---
This symptom is a result of the same logic that causes the related ICE at
typesem.d:~1310
I don't understand the logic, perhaps Walter can take a look who understands
the intent of that code?

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