296dcf09fb
This lint makes Clippy warn about situations where an owned struct is essentially recreated by moving all its fields into a new instance of the struct. Until now this lint only triggered for structs recreated from a base struct. NB: The new functionality too will cause false positives for the situation where a non-copy struct consisting of all copy members is touched again in subsequent code.
78 lines
2.5 KiB
Plaintext
78 lines
2.5 KiB
Plaintext
error: unnecessary struct building
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--> tests/ui/unnecessary_struct_initialization.rs:37:9
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LL | Self { ..*self }
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| ^^^^^^^^^^^^^^^^ help: replace with: `*self`
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= note: `-D clippy::unnecessary-struct-initialization` implied by `-D warnings`
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= help: to override `-D warnings` add `#[allow(clippy::unnecessary_struct_initialization)]`
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error: unnecessary struct building
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--> tests/ui/unnecessary_struct_initialization.rs:44:17
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LL | let mut b = S { ..a };
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| ^^^^^^^^^ help: replace with: `a`
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error: unnecessary struct building
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--> tests/ui/unnecessary_struct_initialization.rs:47:18
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LL | let c = &mut S { ..b };
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| ^^^^^^^^^ help: replace with: `b`
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error: unnecessary struct building
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--> tests/ui/unnecessary_struct_initialization.rs:55:14
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LL | let g = &S { ..f };
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| ^^^^^^^^^ help: replace with: `f`
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error: unnecessary struct building
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--> tests/ui/unnecessary_struct_initialization.rs:58:18
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LL | let h = &mut S {
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| __________________^
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LL | | ..*Box::new(S { f: String::from("foo") })
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LL | | };
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| |_____^ help: replace with: `*Box::new(S { f: String::from("foo") })`
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error: unnecessary struct building
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--> tests/ui/unnecessary_struct_initialization.rs:77:18
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LL | let p = &mut T {
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| __________________^
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LL | | ..*Box::new(T { f: 5 })
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LL | | };
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| |_____^ help: replace with: `*Box::new(T { f: 5 })`
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error: unnecessary struct building
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--> tests/ui/unnecessary_struct_initialization.rs:83:13
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LL | let r = W { f1: q.f1, f2: q.f2 };
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| ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `q`
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error: unnecessary struct building
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--> tests/ui/unnecessary_struct_initialization.rs:94:13
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LL | let w = W { f1: v.f1, ..v };
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| ^^^^^^^^^^^^^^^^^^^ help: replace with: `v`
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error: unnecessary struct building
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--> tests/ui/unnecessary_struct_initialization.rs:102:14
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LL | let r2 = r1.start..r1.end;
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| ^^^^^^^^^^^^^^^^ help: replace with: `r1`
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error: unnecessary struct building
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--> tests/ui/unnecessary_struct_initialization.rs:115:14
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LL | let d = &W { f1: c.f1, f2: c.f2 };
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| ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `c`
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error: unnecessary struct building
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--> tests/ui/unnecessary_struct_initialization.rs:123:14
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LL | let h = &W { f1: g.f1, ..g };
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| ^^^^^^^^^^^^^^^^^^^ help: replace with: `g`
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error: aborting due to 11 previous errors
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