[Issue 22342] importC: Error: function 'func()' is not callable using argument types '(int)'

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22342

--- Comment #3 from Iain Buclaw <ibuclaw at gdcproject.org> ---
(In reply to Iain Buclaw from comment #2)
> Side effects cannot be discarded either:
void expressions passed as a parameter are an error though.

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