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36 lines
1.2 KiB
Rust
36 lines
1.2 KiB
Rust
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// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![recursion_limit="1024"]
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use std::mem;
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pub struct S0<T>(T,T);
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pub struct S1<T>(Option<Box<S0<S0<T>>>>,Option<Box<S0<S0<T>>>>);
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pub struct S2<T>(Option<Box<S1<S1<T>>>>,Option<Box<S1<S1<T>>>>);
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pub struct S3<T>(Option<Box<S2<S2<T>>>>,Option<Box<S2<S2<T>>>>);
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pub struct S4<T>(Option<Box<S3<S3<T>>>>,Option<Box<S3<S3<T>>>>);
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pub struct S5<T>(Option<Box<S4<S4<T>>>>,Option<Box<S4<S4<T>>>>,Option<T>);
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trait Foo { fn xxx(&self); }
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trait Bar {} // anything local or #[fundamental]
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impl<T> Foo for T where T: Bar, T: Sync {
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fn xxx(&self) {}
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}
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impl Foo for S5<u8> { fn xxx(&self) {} }
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fn main() {
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let s = S5(None,None,None);
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s.xxx();
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assert_eq!(mem::size_of_val(&s.2), mem::size_of::<Option<u8>>());
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}
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