rustc/tests/run-make/raw-dylib-alt-calling-convention/driver.rs

extern crate raw_dylib_alt_calling_convention_test;

fn main() {
    raw_dylib_alt_calling_convention_test::library_function(
        std::env::args().skip(1).next().map_or(false, |s| std::str::FromStr::from_str(&s).unwrap()),
    );
}