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//! Regression test for #79409
#![feature(extern_types)]
unsafe extern "C" {
type Device;
}
unsafe fn make_device() -> Box<Device> {
Box::from_raw(0 as *mut _)
}
fn main() {
let d: Device = unsafe { *make_device() }; //~ERROR the size for values of type `Device` cannot be known at compilation time
}
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