[Issue 21791] Stack overflow for forward-referenced enum initializer

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21791

--- Comment #1 from moonlightsentinel at disroot.org ---
(In reply to moonlightsentinel from comment #0)
> This code causes due to a stack overflow:

*This code causes dmd to crash due to a stack overflow:

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