37 lines
895 B
Rust
37 lines
895 B
Rust
// 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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// pretty-expanded FIXME #23616
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#![allow(unknown_features)]
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#![feature(box_syntax)]
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struct Element;
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macro_rules! foo {
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($tag: expr, $string: expr) => {
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if $tag == $string {
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let element: Box<_> = box Element;
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unsafe {
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return std::mem::transmute::<_, usize>(element);
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}
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}
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}
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}
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fn bar() -> usize {
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foo!("a", "b");
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0
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}
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fn main() {
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bar();
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}
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