Frist Draft (in this forum): Enum Parameters

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On Tuesday, 7 May 2024 at 17:44:25 UTC, Paul Backus wrote:
> If a single function in a call stack forgets to pass a given 
> parameter by `ref`, it will be copied. If your code relies on 
> the parameter not being copied (e.g., if it has a disabled copy 
> constructor), this failure to preserve `ref` results in a bug.
>
> If a single function in a call stack forgets to pass a given 
> parameter by `enum`, it will be evaluated at runtime. If your 
> code relies on the parameter being evaluable at compile time 
> (e.g., if it uses it as a template argument or in a `static if` 
> condition), this failure to preserve `enum` results in a bug.

Won't this always result in a compile error, not a runtime bug?