69 lines
1.2 KiB
Rust
Executable File
69 lines
1.2 KiB
Rust
Executable File
#![feature(plugin)]
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#![plugin(clippy)]
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#![deny(warnings)]
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#![allow(dead_code)]
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#[derive(PartialEq, Hash)]
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struct Foo;
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impl PartialEq<u64> for Foo {
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fn eq(&self, _: &u64) -> bool { true }
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}
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#[derive(Hash)]
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//~^ ERROR you are deriving `Hash` but have implemented `PartialEq` explicitly
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struct Bar;
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impl PartialEq for Bar {
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fn eq(&self, _: &Bar) -> bool { true }
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}
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#[derive(Hash)]
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//~^ ERROR you are deriving `Hash` but have implemented `PartialEq` explicitly
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struct Baz;
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impl PartialEq<Baz> for Baz {
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fn eq(&self, _: &Baz) -> bool { true }
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}
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#[derive(Copy)]
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struct Qux;
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impl Clone for Qux {
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//~^ ERROR you are implementing `Clone` explicitly on a `Copy` type
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fn clone(&self) -> Self { Qux }
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}
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// Ok, `Clone` cannot be derived because of the big array
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#[derive(Copy)]
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struct BigArray {
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a: [u8; 65],
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}
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impl Clone for BigArray {
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fn clone(&self) -> Self { unimplemented!() }
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}
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// Ok, function pointers are not always Clone
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#[derive(Copy)]
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struct FnPtr {
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a: fn() -> !,
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}
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impl Clone for FnPtr {
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fn clone(&self) -> Self { unimplemented!() }
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}
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// Ok, generics
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#[derive(Copy)]
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struct Generic<T> {
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a: T,
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}
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impl<T> Clone for Generic<T> {
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fn clone(&self) -> Self { unimplemented!() }
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}
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fn main() {}
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