[Issue 22721] importC: some gnu builtins are rejected

[d-bugmail at puremagic.com]

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

Walter Bright <bugzilla at digitalmars.com> changed:

           What    |Removed                     |Added
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           Keywords|                            |pull

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

https://github.com/dlang/druntime/pull/3730

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