[Issue 23515] Named Enum of function SIGSEGFAULT

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23515

--- Comment #5 from Walter Bright <bugzilla at digitalmars.com> ---
The difference between identity being an (){} vs &fun is the first is a direct
function call the second is an address of a function.

I'm not sure yet if the former should be an error, or can be made to work.
Having an enum of function names has never occurred to me.

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