36 lines
1.0 KiB
Rust
Executable File
36 lines
1.0 KiB
Rust
Executable File
#![feature(plugin)]
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#![plugin(clippy)]
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#![allow(unused_parens, unused_variables)]
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#![deny(clippy, clippy_pedantic)]
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fn id<T>(x: T) -> T { x }
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fn first(x: (isize, isize)) -> isize { x.0 }
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fn main() {
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let mut x = 1;
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let x = &mut x; //~ERROR: x is shadowed by itself in &mut x
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let x = { x }; //~ERROR: x is shadowed by itself in { x }
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let x = (&*x); //~ERROR: x is shadowed by itself in &*x
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let x = { *x + 1 }; //~ERROR: x is shadowed by { *x + 1 } which reuses
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let x = id(x); //~ERROR: x is shadowed by id(x) which reuses
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let x = (1, x); //~ERROR: x is shadowed by (1, x) which reuses
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let x = first(x); //~ERROR: x is shadowed by first(x) which reuses
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let y = 1;
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let x = y; //~ERROR: x is shadowed by y
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let o = Some(1u8);
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if let Some(p) = o { assert_eq!(1, p); }
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match o {
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Some(p) => p, // no error, because the p above is in its own scope
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None => 0,
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};
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match (x, o) {
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(1, Some(a)) | (a, Some(1)) => (), // no error though `a` appears twice
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_ => (),
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}
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}
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