mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-16 17:58:14 +00:00
31 lines
824 B
Rust
31 lines
824 B
Rust
#![warn(clippy::box_default)]
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#[derive(Default)]
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struct ImplementsDefault;
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struct OwnDefault;
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impl OwnDefault {
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fn default() -> Self {
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Self
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}
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}
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macro_rules! outer {
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($e: expr) => {
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$e
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};
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}
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fn main() {
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let _string: Box<String> = Box::new(Default::default());
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let _byte = Box::new(u8::default());
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let _vec = Box::new(Vec::<u8>::new());
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let _impl = Box::new(ImplementsDefault::default());
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let _impl2 = Box::new(<ImplementsDefault as Default>::default());
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let _impl3: Box<ImplementsDefault> = Box::new(Default::default());
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let _own = Box::new(OwnDefault::default()); // should not lint
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let _in_macro = outer!(Box::new(String::new()));
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// false negative: default is from different expansion
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let _vec2: Box<Vec<ImplementsDefault>> = Box::new(vec![]);
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}
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