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23 lines
432 B
Rust
23 lines
432 B
Rust
// run-pass
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#![feature(ptr_metadata)]
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use std::alloc::Layout;
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use std::ptr::Pointee;
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trait Foo {
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type Bar;
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}
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impl Foo for () {
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type Bar = ();
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}
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struct Wrapper1<T: Foo>(#[allow(unused_tuple_struct_fields)] <T as Foo>::Bar);
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struct Wrapper2<T: Foo>(#[allow(unused_tuple_struct_fields)] <Wrapper1<T> as Pointee>::Metadata);
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fn main() {
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let _: Wrapper2<()> = Wrapper2(());
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let _ = Layout::new::<Wrapper2<()>>();
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}
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