tests/ui/c-variadic/variadic-ffi-6.rs

#![crate_type = "lib"]

pub unsafe extern "C" fn use_vararg_lifetime(x: usize, y: ...) -> &usize {
    //~^ ERROR missing lifetime specifier
    &0
}

pub unsafe extern "C" fn use_normal_arg_lifetime(x: &usize, y: ...) -> &usize {
    // OK
    x
}