[Issue 22721] importC: some gnu builtins are rejected

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22721

--- Comment #7 from Walter Bright <bugzilla at digitalmars.com> ---
(In reply to Walter Bright from comment #6)
> I fixed this with a macro, as there's no way to tell dmd to not evaluate
> `arg`.

I found a way - make the parameter lazy.

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