46 lines
976 B
Rust
46 lines
976 B
Rust
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// Copyright 2018 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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// https://github.com/rust-lang/rust/issues/48821
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#![feature(const_fn, const_let)]
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const fn foo(i: usize) -> usize {
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let x = i;
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x
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}
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static FOO: usize = foo(42);
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const fn bar(mut i: usize) -> usize {
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i += 8;
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let x = &i;
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*x
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}
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static BAR: usize = bar(42);
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const fn boo(mut i: usize) -> usize {
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{
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let mut x = i;
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x += 10;
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i = x;
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}
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i
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}
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static BOO: usize = boo(42);
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fn main() {
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assert!(FOO == 42);
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assert!(BAR == 50);
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assert!(BOO == 52);
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}
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