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//@ check-pass
#![deny(improper_ctypes_definitions)]
#[repr(C)]
pub struct Wrap<T>(T);
#[repr(transparent)]
pub struct TransparentWrap<T>(T);
pub extern "C" fn f() -> Wrap<()> {
todo!()
}
const _: extern "C" fn() -> Wrap<()> = f;
pub extern "C" fn ff() -> Wrap<Wrap<()>> {
todo!()
}
const _: extern "C" fn() -> Wrap<Wrap<()>> = ff;
pub extern "C" fn g() -> TransparentWrap<()> {
todo!()
}
const _: extern "C" fn() -> TransparentWrap<()> = g;
pub extern "C" fn gg() -> TransparentWrap<TransparentWrap<()>> {
todo!()
}
const _: extern "C" fn() -> TransparentWrap<TransparentWrap<()>> = gg;
fn main() {}
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