diff options
Diffstat (limited to 'tests/ui/derives/deriving-copyclone.rs')
-rw-r--r-- | tests/ui/derives/deriving-copyclone.rs | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/tests/ui/derives/deriving-copyclone.rs b/tests/ui/derives/deriving-copyclone.rs new file mode 100644 index 000000000..06b3157a7 --- /dev/null +++ b/tests/ui/derives/deriving-copyclone.rs @@ -0,0 +1,37 @@ +// this will get a no-op Clone impl +#[derive(Copy, Clone)] +struct A { + a: i32, + b: i64 +} + +// this will get a deep Clone impl +#[derive(Copy, Clone)] +struct B<T> { + a: i32, + b: T +} + +struct C; // not Copy or Clone +#[derive(Clone)] struct D; // Clone but not Copy + +fn is_copy<T: Copy>(_: T) {} +fn is_clone<T: Clone>(_: T) {} + +fn main() { + // A can be copied and cloned + is_copy(A { a: 1, b: 2 }); + is_clone(A { a: 1, b: 2 }); + + // B<i32> can be copied and cloned + is_copy(B { a: 1, b: 2 }); + is_clone(B { a: 1, b: 2 }); + + // B<C> cannot be copied or cloned + is_copy(B { a: 1, b: C }); //~ ERROR Copy + is_clone(B { a: 1, b: C }); //~ ERROR Clone + + // B<D> can be cloned but not copied + is_copy(B { a: 1, b: D }); //~ ERROR Copy + is_clone(B { a: 1, b: D }); +} |