24 lines
680 B
Rust
24 lines
680 B
Rust
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// Copyright 2012 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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macro_rules! foo {
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($l:lifetime) => {
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fn f<$l>(arg: &$l str) -> &$l str {
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arg
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}
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}
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}
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pub fn main() {
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foo!('a);
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let x: &'static str = f("hi");
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assert_eq!("hi", x);
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}
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