32 lines
1.2 KiB
Rust
32 lines
1.2 KiB
Rust
// Copyright 2015 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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// The `format_args!` syntax extension issues errors before code expansion
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// has completed, but we still need a backtrace.
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// This test includes stripped-down versions of `print!` and `println!`,
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// because we can't otherwise verify the lines of the backtrace.
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fn print(_args: std::fmt::Arguments) {}
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macro_rules! myprint {
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($($arg:tt)*) => (print(format_args!($($arg)*))); //~ NOTE in this expansion of
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}
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macro_rules! myprintln {
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($fmt:expr) => (myprint!(concat!($fmt, "\n"))); //~ ERROR invalid reference to argument `0`
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//~| NOTE in this expansion of concat!
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//~| NOTE in this expansion of myprint!
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}
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fn main() {
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myprintln!("{}"); //~ NOTE in this expansion of
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}
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