0bdfd0f4c7
Closes #11692. Instead of returning the original expression, a dummy expression (with identical span) is returned. This prevents infinite loops of failed expansions as well as odd double error messages in certain situations.
20 lines
699 B
Rust
20 lines
699 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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fn main() {
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print!(test!());
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//~^ ERROR: macro undefined: 'test'
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//~^^ ERROR: format argument must be a string literal
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concat!(test!());
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//~^ ERROR: macro undefined: 'test'
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//~^^ ERROR: expected a literal
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}
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