[Issue 24850] Named enum construction from base type is inconsistent

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24850

--- Comment #1 from Nick Treleaven <nick at geany.org> ---
There is also a dmd test case for issue 23778 using construction from base
struct. So it would need to be deprecated.

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