mirror of
https://github.com/rust-lang/rust-clippy
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9041856ab9
These tests make sure that the swap warning will not be triggered for expressions that will cause multiple mutable references of the same owner
77 lines
1.1 KiB
Rust
77 lines
1.1 KiB
Rust
#![warn(clippy::all)]
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#![allow(clippy::blacklisted_name, clippy::no_effect, redundant_semicolon, unused_assignments)]
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struct Foo(u32);
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#[derive(Clone)]
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struct Bar {
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a: u32,
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b: u32,
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}
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fn field() {
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let mut bar = Bar { a: 1, b: 2 };
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let temp = bar.a;
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bar.a = bar.b;
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bar.b = temp;
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let mut baz = vec![bar.clone(), bar.clone()];
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let temp = baz[0].a;
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baz[0].a = baz[1].a;
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baz[1].a = temp;
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}
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fn array() {
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let mut foo = [1, 2];
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let temp = foo[0];
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foo[0] = foo[1];
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foo[1] = temp;
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foo.swap(0, 1);
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}
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fn slice() {
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let foo = &mut [1, 2];
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let temp = foo[0];
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foo[0] = foo[1];
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foo[1] = temp;
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foo.swap(0, 1);
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}
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fn vec() {
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let mut foo = vec![1, 2];
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let temp = foo[0];
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foo[0] = foo[1];
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foo[1] = temp;
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foo.swap(0, 1);
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}
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#[rustfmt::skip]
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fn main() {
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field();
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array();
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slice();
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vec();
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let mut a = 42;
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let mut b = 1337;
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a = b;
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b = a;
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; let t = a;
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a = b;
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b = t;
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let mut c = Foo(42);
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c.0 = a;
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a = c.0;
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; let t = c.0;
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c.0 = a;
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a = t;
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}
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