41 lines
1.5 KiB
Rust
41 lines
1.5 KiB
Rust
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// Copyright 2014 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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use std::gc::Gc;
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use std::mem::size_of;
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trait Trait {}
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fn main() {
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// Closures - || / proc()
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assert_eq!(size_of::<proc()>(), size_of::<Option<proc()>>());
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assert_eq!(size_of::<||>(), size_of::<Option<||>>());
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// Functions
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assert_eq!(size_of::<fn(int)>(), size_of::<Option<fn(int)>>());
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assert_eq!(size_of::<extern "C" fn(int)>(), size_of::<Option<extern "C" fn(int)>>());
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// Slices - &str / &[T] / &mut [T]
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assert_eq!(size_of::<&str>(), size_of::<Option<&str>>());
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assert_eq!(size_of::<&[int]>(), size_of::<Option<&[int]>>());
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assert_eq!(size_of::<&mut [int]>(), size_of::<Option<&mut [int]>>());
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// Traits - Box<Trait> / &Trait / &mut Trait
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assert_eq!(size_of::<Box<Trait>>(), size_of::<Option<Box<Trait>>>());
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assert_eq!(size_of::<&Trait>(), size_of::<Option<&Trait>>());
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assert_eq!(size_of::<&mut Trait>(), size_of::<Option<&mut Trait>>());
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// Pointers - Box<T> / Gc<T>
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assert_eq!(size_of::<Box<int>>(), size_of::<Option<Box<int>>>());
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assert_eq!(size_of::<Gc<int>>(), size_of::<Option<Gc<int>>>());
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}
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