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Diffstat (limited to 'tests/ui/union/union-derive-clone.rs')
-rw-r--r-- | tests/ui/union/union-derive-clone.rs | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/tests/ui/union/union-derive-clone.rs b/tests/ui/union/union-derive-clone.rs new file mode 100644 index 000000000..7aa62146e --- /dev/null +++ b/tests/ui/union/union-derive-clone.rs @@ -0,0 +1,39 @@ +// revisions: mirunsafeck thirunsafeck +// [thirunsafeck]compile-flags: -Z thir-unsafeck + +use std::mem::ManuallyDrop; + +#[derive(Clone)] //~ ERROR the trait bound `U1: Copy` is not satisfied +union U1 { + a: u8, +} + +#[derive(Clone)] +union U2 { + a: u8, // OK +} + +impl Copy for U2 {} + +#[derive(Clone, Copy)] +union U3 { + a: u8, // OK +} + +#[derive(Clone, Copy)] +union U4<T: Copy> { + a: T, // OK +} + +#[derive(Clone, Copy)] +union U5<T> { + a: ManuallyDrop<T>, // OK +} + +#[derive(Clone)] +struct CloneNoCopy; + +fn main() { + let u = U5 { a: ManuallyDrop::new(CloneNoCopy) }; + let w = u.clone(); //~ ERROR the method +} |