68 lines
1.2 KiB
Rust
68 lines
1.2 KiB
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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#![feature(tool_lints)]
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#![warn(clippy::unit_arg)]
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#![allow(clippy::no_effect)]
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use std::fmt::Debug;
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fn foo<T: Debug>(t: T) {
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println!("{:?}", t);
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}
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fn foo3<T1: Debug, T2: Debug, T3: Debug>(t1: T1, t2: T2, t3: T3) {
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println!("{:?}, {:?}, {:?}", t1, t2, t3);
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}
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struct Bar;
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impl Bar {
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fn bar<T: Debug>(&self, t: T) {
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println!("{:?}", t);
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}
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}
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fn bad() {
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foo({});
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foo({ 1; });
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foo(foo(1));
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foo({
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foo(1);
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foo(2);
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});
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foo3({}, 2, 2);
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let b = Bar;
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b.bar({ 1; });
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}
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fn ok() {
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foo(());
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foo(1);
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foo({ 1 });
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foo3("a", 3, vec![3]);
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let b = Bar;
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b.bar({ 1 });
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b.bar(());
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question_mark();
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}
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fn question_mark() -> Result<(), ()> {
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Ok(Ok(())?)?;
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Ok(Ok(()))??;
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Ok(())
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}
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fn main() {
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bad();
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ok();
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}
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