42 lines
939 B
Rust
42 lines
939 B
Rust
// Copyright 2016 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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#![feature(rustc_attrs)]
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#![allow(warnings)]
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macro_rules! foo { () => {
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let x = 1;
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macro_rules! bar { () => {x} }
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let _ = bar!();
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}}
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macro_rules! bar { // test issue #31856
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($n:ident) => (
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let a = 1;
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let $n = a;
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)
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}
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macro_rules! baz {
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($i:ident) => {
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let mut $i = 2;
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$i = $i + 1;
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}
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}
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#[rustc_error]
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fn main() { //~ ERROR compilation successful
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foo! {};
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bar! {};
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let mut a = true;
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baz!(a);
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}
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