30 lines
803 B
Rust
30 lines
803 B
Rust
// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution.
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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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// run-rustfix
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#![allow(unused_must_use)]
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#![warn(clippy::writeln_empty_string)]
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use std::io::Write;
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fn main() {
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let mut v = Vec::new();
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// These should fail
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writeln!(&mut v, "");
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let mut suggestion = Vec::new();
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writeln!(&mut suggestion, "");
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// These should be fine
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writeln!(&mut v);
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writeln!(&mut v, " ");
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write!(&mut v, "");
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}
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