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Diffstat (limited to 'tests/ui/union/union-derive-rpass.rs')
-rw-r--r-- | tests/ui/union/union-derive-rpass.rs | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/tests/ui/union/union-derive-rpass.rs b/tests/ui/union/union-derive-rpass.rs new file mode 100644 index 000000000..8276bc635 --- /dev/null +++ b/tests/ui/union/union-derive-rpass.rs @@ -0,0 +1,42 @@ +// run-pass +// revisions: mirunsafeck thirunsafeck +// [thirunsafeck]compile-flags: -Z thir-unsafeck + +#![allow(dead_code)] +#![allow(unused_variables)] + +// Some traits can be derived for unions. + +#[derive( + Copy, + Clone, + Eq, +)] +union U { + a: u8, + b: u16, +} + +impl PartialEq for U { fn eq(&self, rhs: &Self) -> bool { true } } + +#[derive( + Clone, + Copy, + Eq +)] +union W<T: Copy> { + a: T, +} + +impl<T: Copy> PartialEq for W<T> { fn eq(&self, rhs: &Self) -> bool { true } } + +fn main() { + let u = U { b: 0 }; + let u1 = u; + let u2 = u.clone(); + assert!(u1 == u2); + + let w = W { a: 0 }; + let w1 = w.clone(); + assert!(w == w1); +} |