diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/union/union-basic.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/union/union-basic.rs')
-rw-r--r-- | src/test/ui/union/union-basic.rs | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/test/ui/union/union-basic.rs b/src/test/ui/union/union-basic.rs new file mode 100644 index 000000000..dcc552ac7 --- /dev/null +++ b/src/test/ui/union/union-basic.rs @@ -0,0 +1,62 @@ +// run-pass +// revisions: mirunsafeck thirunsafeck +// [thirunsafeck]compile-flags: -Z thir-unsafeck + +#![allow(unused_imports)] + +// aux-build:union.rs + +extern crate union; +use std::mem::{size_of, align_of, zeroed}; + +union U { + a: u8, + b: u16 +} + +fn local() { + assert_eq!(size_of::<U>(), 2); + assert_eq!(align_of::<U>(), 2); + + let u = U { a: 10 }; + unsafe { + assert_eq!(u.a, 10); + let U { a } = u; + assert_eq!(a, 10); + } + + let mut w = U { b: 0 }; + unsafe { + assert_eq!(w.a, 0); + assert_eq!(w.b, 0); + w.a = 1; + assert_eq!(w.a, 1); + assert_eq!(w.b.to_le(), 1); + } +} + +fn xcrate() { + assert_eq!(size_of::<union::U>(), 2); + assert_eq!(align_of::<union::U>(), 2); + + let u = union::U { a: 10 }; + unsafe { + assert_eq!(u.a, 10); + let union::U { a } = u; + assert_eq!(a, 10); + } + + let mut w = union::U { b: 0 }; + unsafe { + assert_eq!(w.a, 0); + assert_eq!(w.b, 0); + w.a = 1; + assert_eq!(w.a, 1); + assert_eq!(w.b.to_le(), 1); + } +} + +fn main() { + local(); + xcrate(); +} |