40 lines
1.3 KiB
Rust
40 lines
1.3 KiB
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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// aux-build:two_macros.rs
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macro_rules! foo { () => {} }
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macro_rules! macro_one { () => {} }
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#[macro_use(macro_two)] extern crate two_macros;
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macro_rules! m1 { () => {
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macro_rules! foo { () => {} } //~ ERROR `foo` is already in scope
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//~^ NOTE macro-expanded `macro_rules!`s may not shadow existing macros
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#[macro_use] //~ ERROR `macro_two` is already in scope
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//~^ NOTE macro-expanded `#[macro_use]`s may not shadow existing macros
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extern crate two_macros as __;
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}}
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m1!(); //~ NOTE in this expansion
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//~| NOTE in this expansion
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//~| NOTE in this expansion
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//~| NOTE in this expansion
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foo!();
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macro_rules! m2 { () => {
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macro_rules! foo { () => {} }
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foo!();
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}}
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m2!();
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//^ Since `foo` is not used outside this expansion, it is not a shadowing error.
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fn main() {}
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