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Diffstat (limited to 'src/tools/clippy/src/docs/expl_impl_clone_on_copy.txt')
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diff --git a/src/tools/clippy/src/docs/expl_impl_clone_on_copy.txt b/src/tools/clippy/src/docs/expl_impl_clone_on_copy.txt new file mode 100644 index 000000000..391d93b67 --- /dev/null +++ b/src/tools/clippy/src/docs/expl_impl_clone_on_copy.txt @@ -0,0 +1,20 @@ +### What it does +Checks for explicit `Clone` implementations for `Copy` +types. + +### Why is this bad? +To avoid surprising behavior, these traits should +agree and the behavior of `Copy` cannot be overridden. In almost all +situations a `Copy` type should have a `Clone` implementation that does +nothing more than copy the object, which is what `#[derive(Copy, Clone)]` +gets you. + +### Example +``` +#[derive(Copy)] +struct Foo; + +impl Clone for Foo { + // .. +} +```
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